In order to promote the upgrading and development of the polyurethane industry, strengthen communication and contact with industry buyers, and promote technology upgrading and technology transformation, we will continue to hold the 12th Shanghai International Polyurethane Exhibition 2024 in Shanghai from April 24 to 26, 2024. After eleven sessions of cultivation and accumulation, Shanghai International Polyurethane Exhibition has grown into China's polyurethane industry exhibition. Leading enterprises in the industry gathered together to achieve the perfect presentation of the entire industrial chain. The last exhibition attracted 239 enterprises at home and abroad, representing exhibitors such as: Huntsman, Wanhua Chemical, DOW, Tosoh, Momentive, Nantong Hengkang, Yinuowei, Jiahua Chemical, Hengguangda, Asahikawa Chemical, Huafon New Materials, Changhua Chemical, Shandong Longhua, Limingyuan, Dexin Chemical, Xiangyuan Chemical, Mesid Chemical, Maihao Chemical, Hecheng Polymer, Hengkun CNC, etc., a total of 31616 people from all over the world came to visit. At the same time, the exhibition held the "International Polyurethane Industry High-level Forum" to release 39 papers, 22 top industry experts to make reports, nearly 600 representatives attended the conference, large scale, high academic level, wide influence, by domestic and foreign companies, colleges and universities, government agencies, industry associations and industry insiders actively participated. -Scope of exhibits- In order to promote the upgrading and development of the polyurethane industry, strengthen communication and contact with industry buyers, and promote technology upgrading and technology transformation, we will continue to hold the 12th Shanghai International Polyurethane Exhibition 2024 in Shanghai from April 24 to 26, 2024. After eleven sessions of cultivation and accumulation, Shanghai International Polyurethane Exhibition has grown into China's polyurethane i

After eleven sessions of cultivation and accumulation, Shanghai International Coatings, Inks and Adhesives Exhibition has grown into China's top coatings, inks and adhesives industry exhibition. Leading enterprises in the industry gathered together to achieve the perfect presentation of the entire industrial chain. The last exhibition attracted Dow, DSM, Lily, Qingyou, Clariant, Huntsman, Merck, Ashland, Hexion, Kumho, Corneo, Evcona, Chemours, Arkema, Covestro, Xingsheng Chemical, Hongyu, Bardfu, Youzhong, Dawn, Shiquanxing, Xinli, Donglian, Liwang, Baozhuo and other well-known enterprises to participate in the exhibition, the exhibition held at the same time "International Coating and Ink Industry High-level Forum" released 39 papers, 22 top industry experts made reports, nearly 600 representatives attended the meeting, large-scale, The academic level is high and the influence is widespread, and it has been actively participated by domestic and foreign companies, universities, government agencies, industry associations and industry insiders. Range of exhibits (1) Raw materials for the production of coatings/inks/adhesives/sealants Various film-forming substances (resins, emulsions, curing agents), additives, additives, solvents, monomers, base materials, plasticizers, pigments (organic/inorganic pigments, functional pigments, titanium dioxide, color pastes, dyes, etc.), various fillers, etc. (2) Coating production, testing and packaging equipment Stirring/mixing/grinding/dispersing/tinting/filtering equipment, various measurement and testing and analysis equipment; Various packaging and packaging equipment. (3) Ink products Offset printing ink, gravure ink, flexo ink, screen printing ink, water-based ink, conductive ink, inkjet ink, energy curing ink (UV ink, EB ink), insulating ink, etc (4) Adhesive products and sealing materials Water-based adhesives, pressure-sensitive adhesives, polyure

The two-component polyurethane sealant caulking construction steps are as follows: First, the base layer must be treated to ensure that the adhesive surface is neat and clean (hand-held cutting machines, grinding wheels, steel brushes, etc.) can be used, so that the glued surface reveals a firm structure. Second, the seam surface must be completely dry, clean, free of debris, and there can be no clear water. All dust and grout on the surface must be clean. Third, at the same time, the rust layer protective paint also needs to be removed. If structural conditions permit, if necessary, a blowtorch can be used to accelerate surface drying. Fourth, before applying glue, you need to apply the primer solution. The primer only needs to be brushed with one layer and caulked with sealant only after the surface is not wet. As an adhesive for concrete construction joint caulking sealing, two-component polyurethane sealant has excellent adhesion and elastic sealing and waterproof effect. Before using two-component polyurethane sealants, note the following: 1. Make sure the surface of the building is clean, dry and oil-free. 2. Apply primer solution to the surface before construction, wait for the surface to dry, and then apply 50mm wide protective tape to 10mm on both sides of the gap to prevent excess sealant from staining the surface of the structure. 3. Polyurethane sealant is composed of two components, A and B, and each box has 5 barrels of white material (component A) and 1 barrel of black material curing agent (component B). Stir the two components A and B well until there is no color difference. (Note: Due to different climates, component B should be used more in winter and less in summer.) A: B=100:8-12, a small test should be performed before use. 4. Fill the gap with the stirred polyurethane sealant using a scraper board or extruder,

Silicone sealants and polyurethane sealants are two common sealing materials that are widely used in many industries and applications. Although both are used for sealing and bonding, there are some differences and similarities in their chemical composition, physical properties, and applicable scenarios. Below is a detailed introduction to silicone sealants and polyurethane sealants, as well as the differences and similarities between them. Silicone sealant is an elastic sealing material with silicone as the main component. It has the following features: High temperature resistance: Silicone sealants can maintain stable performance in high temperature environments, withstanding temperatures up to 300°C. Weather resistance: Silicone sealants have excellent weather resistance and are resistant to UV rays, oxygen, water and atmospheric contaminants, making them suitable for outdoor environments. Good electrical insulation: Silicone sealants have good electrical insulation properties and can be used for packaging and insulation of electronic devices. Chemical resistance: Silicone sealants are resistant to most chemicals and can remain stable in chemically aggressive environments. Aging resistance: Silicone sealants have a long service life and retain their elasticity and sealing properties after long-term use. Polyurethane sealant is an elastic sealing material with polyurethane as the main component. It has the following features: Good adhesion: Polyurethane sealants can bond with a variety of materials, including metals, plastics, glass, etc., with good adhesion properties. Strength and abrasion resistance: Polyurethane sealants have high strength and wear resistance, suitable for high strength and high wear applications. Good elasticity: Polyurethane sealants have good elasticity and elastic recovery, and can withstand

Fireproof sponge, also known as flame retardant sponge, its chemical name is polyurethane foam material, divided into soft foam (mainly used on furniture) and hard foam (mainly used for heat preservation) two. Generally, it is a fireproof material synthesized by adding flame retardants to various polyurethanes, and the fire retardant effect of the product meets the requirements of the American Standard 117 standard and the national standard. Use the same as a regular sponge. The combustion of polymers is a very complex and intense oxidation reaction. The combustion process is that under the continuous heating of the external heat source, the polymer first reacts with the oxygen in the air in a chain degradation of free radicals, resulting in a part of the heat released The degraded polymer further exacerbates its decomposition, producing more flammable gases that make combustion more violent. There are two ways to retard a fireproof sponge: First, flame-retardant elements or atomic groups containing flame-retardant new elements are chemically introduced into the molecular structure of the sponge; Another method is to add flame retardant elements to the sponge, compounds containing flame retardant elements. The flame retardant substance used in the former method is called an strain flame retardant, and the substance used in the latter method is called an additive flame retardant. At present, the vast majority of flame retardants used in sponges are additive flame retardants, and reactive flame retardants are mainly used in thermosetting resins such as epoxy resin and polyurethane. The function of flame retardants is to interfere with oxygen, heat and combustibles, the three basic elements that maintain combustion. It can generally be achieved in the following ways. 1. Flame retardants can produce heavier non-combustible gases or boiling point liquids, covering the surface of the

Due to the diversity of raw materials and formulas, the preparation methods of waterborne polyurethane are becoming more and more abundant, and the common ones are self-emulsification method and external emulsification method, prepolymer method, melt dispersion method, etc. No matter what kind of method is used, because waterborne polyurethane is based on water as a solvent, the viscosity is generally adjusted by a water-soluble thickener and water with foam stability, coupled with the influence of external forces such as stirring, it is easy to form a large amount of foam and accumulate during the preparation process, slowing down the process process. For this reason, we can choose to add the right amount of waterborne polyurethane defoamer to easily deal with the foaming problem. So, what are the uses, usages and scenarios of waterborne polyurethane defoamers? First, the use of waterborne polyurethane defoamer Waterborne polyurethane defoamer is mainly used in waterborne polyurethane coatings, printing inks and other fields, which can well eliminate the foam in waterborne polyurethane and improve product quality and production efficiency. At the same time, the defoamer is environmentally friendly and meets environmental protection requirements, which increases the social image and market competitiveness of the enterprise. Second, the use of waterborne polyurethane defoamer 1. Direct addition: Waterborne polyurethane defoamer is added directly to the waterborne polyurethane system, which usually needs to be added during the mixing process. 2. Pre-disperse addition: The waterborne polyurethane defoamer is pre-mixed with a certain amount of solvent or water to form a homogeneous suspension, and then the suspension is added to the waterborne polyurethane system. 3. Dissolution addition: The waterborne polyurethane defoamer is dissolved in a solvent or water, an

.Thermoplastic Polyurethane (TPU) is a type of polymer resin that is known for its flexibility, durability, and versatility. It is a thermoplastic material, which means it can be melted and reprocessed multiple times without losing its original properties. TPU is commonly used in various industries, including automotive, electronics, footwear, and sportswear. It is often used to make products such as phone cases, cables, hoses, seals, gaskets, and inflatable structures. Some key properties of TPU include: 1. Flexibility: TPU has excellent flexibility, allowing it to bend and stretch without breaking. This makes it suitable for applications where flexibility is required, such as in shoe soles or flexible electron

Recently, the Development and Reform Commission of Zhejiang Province announced the provincial key construction and pre-arrangement project plan for 2023. This year, it is planned to arrange 534 provincial key construction projects, with an annual planned investment of 438.7 billion yuan. In the field of advanced manufacturing bases, focusing on the construction of a manufacturing power province with the "415X" industrial cluster as the core, building a global advanced manufacturing base with high quality, promoting the development of a new generation of information technology, high-end equipment, modern consumption and health, green petrochemicals and new materials, digital technology transformation, modern service industry and other industries, a total of 85 advanced manufacturing projects are arranged, with an annual planned investment of 101.8 billion yuan. Project Name: Zhejiang Petrochemical Co., Ltd. High Performance Resin Project Planned construction content and scale: 1.2 million tons of ABS, 3*60,000 tons of PMMA, 200,000 tons of DMC, 400,000 tons of LDPE, etc. (Previously announced: 300,000 tons/year LDPE/EVA (tube) plant, 100,000 tons/year EVA (kettle) plant, 400,000 tons/year LDPE plant, 200,000 tons/year DMC unit, 3×6,000 tons/year PMMA unit and 1.2 million tons/year ABS unit will be newly built.) ) Total investment: 1920000 yuan Planned duration: 2022-2024 Cumulative investment completed in 22 years: 5000000 yuan 23-year planned investment: 600000 yuan 23-year plan image schedule: ABS device superstructure construction, equipment installation, etc.; LDPE began construction of ground pipes and foundations. Project Name: Zhejiang Petrochemical High-end New Material Project Planned construction content and scale: 32 sets of production plants such as

Scientists have found microbes in the Alps and the Arctic that can digest plastic at low temperatures, which could be a valuable tool for recycling. Many microorganisms that can do this have been found, but they usually only work at temperatures above 30°C (86°F). This means that they are very expensive to use in industrial practice due to the need for heating. This also means that using them is not carbon neutral. Scientists at the Swiss Federal Institute of Research WSL have discovered microbes that can do this at 15°C, which could lead to a breakthrough in microbial recycling. Their findings were published in the journal Frontiers in Microbiology. Dr. Joel Rüthi from WSL and his colleagues collected 19 bacterial strains and 15 fungi in Greenland, Svalbard and Switzerland that grew on freely placed or intentionally buried plastic products that were kept underground for a year. They had these microbes grow in the lab as single-strain cultures in the dark at 15°C and tested whether they could digest different types of plastics. The results showed that the strains belonged to 13 genera of the phylum Actinomycetes and Proteobacteria, and the fungi belonged to 10 genera of the phylum Ascomycetes and the phylum Mucormycetes. The plastics tested include non-biodegradable polyethylene (PE) and biodegradable polyurethane (PUR), as well as two commercially available biodegradable mixtures of polybutylene terephthalate-butylene adipate (PBAT) and polylactic acid (PLA). Even after 126 days of incubation on these plastics, all strains were unable to digest PE. But 19 strains (56%), including 11 fungi and 8 bacteria, were able to digest PUR at 15°C, while 14 fungi and 3 bacteria were able to digest a plastic mixture of PBAT and PLA. PUR hot melt adhesives are a typ

On April 27, the Emergency Management Department of Jiangsu Province issued the "Guidelines for the Safety and Control of the Use of Hazardous Chemicals in Jiangsu Metallurgical and Other Industrial Enterprises (Trial)" to strengthen the safety management of the use of hazardous chemicals in relevant industrial enterprises. Based on the principle of "reasonable grading, easy management, highlighting key points and appropriate strictness", the Guidelines comprehensively consider the inherent risk factors such as chemical processes, key supervision of hazardous chemicals, major hazardous sources, and types and quantities of hazardous chemicals, and industrial enterprises that will use hazardous chemicals are divided into four grades: A, B, C, and D according to the risk from high to low. Among them, there are 18 kinds of hazardous chemical processes under key supervision, including phosgene and phosgene process, electrolysis process (chlor-alkali), chlorination process, nitrification process, ammonia synthesis process, cracking (cracking) process, etc., or the use of hazardous chemicals according to the "Identification of Major Hazard Sources of Hazardous Chemicals" and the number of substances in the hazardous unit constitutes major hazard sources I, II, III and IV, it is assessed as Grade A; If the hazardous chemicals used in the "Identification of Major Hazard Sources of Hazardous Chemicals" do not constitute a major source of hazard but the calculated value of the number of substances in the hazardous unit is greater than or equal to 0.05, it is assessed as grade B; if the calculated value of the number of substances in the hazardous chemical hazardous unit is greater than or equal to 0.01 and less than 0.05 in the "Identification of Major Hazard Sources of Hazardous Chemicals", it is assessed as grade C. Industrial enterprises that use hazardous chemicals other than grades A, B and C are Class D. The Guidelines emphasi

The requirements for appliances for the treatment of deformed teeth are very high, they must be clinically effective, customizable, invisible and comfortable to wear. The same is true for orthodontic splint materials. Now, a team at the Fraunhofer Institute for Applied Polymers IAP in Potsdam, Germany, in collaboration with the University Hospital Düsseldorf in Germany, has developed a highly innovative material that enables completely new treatment concepts and reduces costs. Scientists have developed polymers with shape-memory properties. This new material combines efficient tooth movement with more efficient use of resources. Dr. Thorsten Pretsch, head of the research department "Synthesis and Polymer Technology" at the Fraunhofer Institute for Applied Polymer Research IAP, explains the concept: "Appliances made of shape-memory polymers control the forces acting on the teeth and thus make the treatment more patient-friendly." Dr Thorsten Pretsch said: "Our appliances allow multiple steps of orthodontics to be performed at once. "The advantages are: reducing the number of appliances during treatment, avoiding excessive material waste and reducing treatment costs. Shape memory polymers are smart materials. Objects made of these plastics are capable of changing their shape in a precise and predetermined way. External stimuli, such as heat, trigger the shape memory effect. The appliance slowly changes shape to move the misaligned tooth to the desired position. TPU(Thermoplastic Polyurethane Resin) Thermoplastic Po

Scientists in Iran use a mixture of waste cooking oil and plastic waste to make polyols. The team at Imam Khomeini International University uses these polyols to make rigid polyurethane foam. Used cooking oils can be epoxidized, and these epoxides are then converted into bio-based polyols by reacting with some chemical agents such as ethylene glycol, glycerol and triethanolamine. Bio-based polyols can also be prepared by transesterification of oils. Crude glycerin is the main by-product of the transesterification process of biodiesel preparation from used cooking oil, but it has a high content of impurities, including water, methanol and acylglycerides. Therefore, it is not economically feasible to purify it. Various waste plastics can also be used to produce polyols, which are reproduced by glycolysis. The team used polyols from crude glycerin and epoxidized waste edible oils in the recycling of three different plastic wastes – PET, PU and BPA – resulting in a new bio-based polyol with different viscosities and hydroxyl values. The waste is first depolymerized in diethylene glycol and then reacted with a heated mixture of PGL and EUO under the action of a magnetic nanoparticle catalyst. These new bio-based polyols are then mixed with commercial polyols in 20%, 40% and 60% ratios and react with isocyanates to produce polyurethane foam. The apparent density of foam increases with increasing bio-based polyol content, and high viscosity inhibits bubble growth. Foams made with 20% and 40% bio-based polyol blends have "insignificant changes" in insulation, morphology and mechanical properties under heat compared to relatively rigid foam samples. At 60%, the bubble structure is partially deformed, and the mechanical properties under heat have undergone a relatively large change.

,,.,PUReSmart69,. ,,,,. 2019,2021,.,,., TDI .,,. ,.Recticel.RecticelBart Haelterman:[,.." Polyester polyol is a type of polyol that is derived from the reaction between a polyol (such as glycerol or ethylene glycol) and a dicarboxylic acid (such as adipic acid or phthalic anhydride). It is commonly used as a raw material in the production of polyurethane foams, coatings, adhesives, and elastomers. Polyester polyols have several advantages over other types of polyols. They have good chemical resistance, mechanical properties, and thermal stability. They also have low toxicity and are environmental

On April 3, Düsseldorf, Germany, Envalior, a global engineering materials company, was officially established as a new company. With a turnover of around 4 billion euros and around 4,000 highly skilled and diverse employees worldwide, the new company marks the birth of another global engineering materials giant. Envalior consists of highly complementary DSM Engineering Materials (DEM) and LANXESS High Performance Materials (HPM) and is owned by global private equity firms Advent International and LANXESS. The new corporate brand is a combination of EN and VALIOR and reflects the ambitions of the new company: EN stands for engaging, enterprising, engineering, environment, and VALIOR stands for value-driven, value-creating. Polyester polyol is a type of polyol that is derived from the reaction between a polyol (such as glycerol or ethylene glycol) and a dicarboxylic acid (such as adipic acid or phthalic anhydride). It is commonly used as a raw material in the production of polyurethane foams, coatings, adhesives, and elastomers. Polyester polyols have several advantages over other types of polyols. They have good chemical resistance, mechanical properties, and thermal stability. They also have low toxicity and are environmentally friendly. Additionally, polyester polyols can be easily modified to achieve desired properties, such as increased flexibility or flame retardancy. Polyester polyols are typically liquid at room temperature and have a high molecular weight. They can be further reacted with isocyanates to form polyurethane materials, which have a wide range of applications in various industries, including automotive, construction, and furniture.

Major listed companies in the industry: mainly including Huafon Chemical (002064.SZ), Wanhua Chemical (600309.SH), (300200.SZ), Taihe New Material (002254.SZ), Oriental Materials (603110.SH), Mestar (603041.SH), Huide Technology (603192.SH), etc Industry overview 1. Definitions Polyurethane products include foams and CASE systems, foam systems include rigid polyurethane foams and flexible polyurethane foams, and CASE systems include coatings, adhesives, sealants and elastomers. 2. Analysis of the industrial chain: there are many types of midstream products From the perspective of upstream raw materials, it can be divided into isocyanates (including MDI, TDI, etc., also known as "black materials"), polyester polyols and polyether polyols (including PO, PTMEG, PPG, etc., also known as "white materials") and co-solvents (such as DMF, methyl ethyl ketone, stabilizers, flame retardants, etc.). The polyurethane midstream mainly includes two systems: the foam system and the CASE system. The foam system mainly includes polyurethane rigid foam and soft foam, hard foam is mainly used for roof wall insulation waterproof spray foam, pipe insulation materials, etc., soft foam mainly includes furniture and transportation various cushions; CASE systems are mainly used to produce coatings, adhesives, sealants and elastomers. The downstream includes applications in furniture, home appliances, building energy-saving materials and other fields. The upstream of the polyurethane industry is mainly enterprises, including Wanhua Chemical, isocyanate production enterprises, and polyol enterprises such as Longhua New Material; Midstream is a polyurethane manufacturing enterprise, representing enterprises including Wanhua Chemical, Huafon Chemical, etc.; The downstream is listed enterprises including Beijian New Materials and so on. Industry development history

Guangdong Adhesive Industry Association held an expert review meeting of the group standards of "high-strength low-density silicone adhesive sealant" and "polyurethane powder adhesive for shoes" in Foshan City. The standards were considered by expert members of the Standards Committee of the Association. The expert group unanimously agreed that the group standards "high-strength low-density silicone adhesive sealant" and "polyurethane powder adhesive for shoes" organized by the Guangdong Adhesive Industry Association met the requirements and agreed to pass the approval of these two group standards. Finally, on behalf of the Association, Secretary-General Pang Weiling expressed his heartfelt thanks to the members of the expert group and the drafting units of the two standards for their support and participation. He said that the adhesive industry is developing rapidly, in order to meet the needs of the market and innovation, standardize the market order and promote technological innovation. The association is now open for 2023 group standard projects, and welcomes all member units to actively express their opinions and participate in the formulation, and communicate with the association secretariat before April 28.

On March 20, the Chongqing Municipal Commission of Economy and Information Technology issued the Chongqing New Materials Industry Development Action Plan (2023-2025) (Draft for Comments) (hereinafter referred to as the "Action Plan") on March 20. The Action Plan clearly aims to build a "4+4+N" new material industry system. Vigorously develop the four advanced basic material industries of new chemical materials, advanced non-ferrous metal materials, advanced steel materials and green building materials, focus on cultivating four key strategic material industries of new energy materials, special metal functional materials, a new generation of information technology materials and energy storage materials, and cultivate cutting-edge new materials such as aerogel materials, graphene materials, nanomaterials, and additive manufacturing materials. The Action Plan puts forward the key direction of expanding and strengthening advanced basic materials and improving the supply capacity of key strategic materials. Among them, it emphasizes the development of polyurethane, polyamide, polyester, high-end olefins, PMMA industry chain, expand the polyoxymethylene and PPS industries, and cultivate and develop PC, ethylene propylene rubber, polyacrylonitrile, polyacrylic acid, cellulose triacetate and other synthetic materials. Actively develop special chemicals and high-purity chemical materials, accelerate the development of new functional coating materials and bio-based synthetic materials, strengthen the promotion of basic chemical raw materials to improve quality and efficiency, and implement the five major synthetic materials industry chain to strengthen the chain extension chain. Vigorously develop wind power materials such as wind power yarns and composite materials, wind power blades, support photovoltaic industry support materials such as photovoltaic glass, modules, solar-grade silicon wafers, and frames, cultivate proton exchange membra

Although the polyurethane industry is very concerned about waste recycling, just a few years ago, there was no good solution for the disposal of discarded mattresses, and about 60% ended up in landfills and the remaining 40% incineration. With the joint efforts of all parties, especially the solution proposed by PUReSmart in the European Union, it is revolutionizing the traditional integrated system of mattress production and recycling, significantly improving the recycling efficiency and recycling effect. By combining intelligent mechanical recycling technology with chemical decomposition technology developed by PUReSmart, an innovative process for the chemical decomposition of waste polyurethane is close to becoming a reality and enables flexible polyurethane foam to be fully recycled. This technology is more conducive to driving carbon reduction in the polyurethane industry, thereby aligning the industry's development with its environmental goals. Polyurethane foam is one of the most important plastic products in the world and can be used in a variety of applications, but waste recycling is a challenge for the polyurethane industry. In this context, the EU-funded Puresmart project brings together 9 partners from 6 countries to find new approaches and technological paths. The goal of the project is to recycle more than 90% of polyurethane waste and convert it into new and usable products. The Puresmart Project Alliance is developing smart sorting technology that separates polyurethane materials into unused raw materials and breaks them down into basic chemical components. Four years ago, when the PUReSmart Alliance set out to find ways to transform the production-application-waste model of polyurethane into a circular economy model, the consortium came up with a practical idea from the beginning: polyurethane recycling should start with a solid mechanical separation process that facilitates subsequent chemical dec

Polyurethane hardeners generally refer to isocyanate-based (NCO)-containing components in two-component polyurethane products, mainly used in combination with components containing active hydrogen. Common components containing active hydrogen are polyether polyol, polyester polyol, epoxy resin, hydroxyacrylic resin, etc., in these products, the addition of curing agent can not only improve the cross-linking degree and cohesion energy of the product, but also enhance the strength and weather resistance of the final product. Polyurethane curing agents are currently widely used in adhesives, coatings, inks and other fields. Classification of polyurethane hardeners For polyurethane curing agents, they can be classified into three categories: solvent-based, water-dispersible and closed. Solvent-based curing agent For most traditional products, solvent-based curing agents are more commonly used, which can give products better strength, weather resistance, mechanical properties, etc. Solvent-based curing agent is composed of common substances Some commonly used structural formulas of polyisocyanates Water-dispersible curing agent With the enhancement of people's awareness of environmental protection, waterborne polyurethane materials have gradually received attention. In two-component waterborne polyurethane products, the isocyanate component plays a crucial role. At present, the more common practice is to achieve dispersion in water by hydrophilic modification of isocyanate, and the main methods of modification are non-ionic modification, anionic modification and anion-nonionic modif

Recently, the National Standardization Administration and the Ministry of Industry and Information Technology have successively released a number of new technical standards for the adhesive and adhesive tape industry that will be implemented in the first half of 2023. In order to enable the whole industry to grasp and follow up the latest progress of various standard work, the China Adhesive and Adhesive Tape Industry Association has collected and sorted it out. 1. Determination of puncture resistance of adhesive tape (GB/T 41657-2022) This document describes the determination method of the puncture resistance of adhesive tapes, which is suitable for the determination and evaluation of the puncture resistance of adhesive tapes. Implementation date: 2023-02-01 2. Determination of adhesive viscosity (GB/T 2794-2022) This document describes methods for determining the viscosity of adhesives using single-cylinder rotational viscometers, conical plate rotational viscometers, and rotational rheometers, which are suitable for the determination of adhesive viscosity. This standard replaces GB/T 2794-2013 standard. Implementation date: 2023-05-01 3. Evaluation requirements for green factories in polyurethane resin industry (HG/T 6059-2022) This document stipulates the general rules, evaluation indicators and requirements, evaluation procedures and evaluation reports of green factories in the polyurethane resin industry, which is suitable for the green factory evaluation of polyurethane resin (polyurethane shoe sole original solution, polyurethane leather resin, polyurethane elastomer (TPU, CPU), polyurethane adhesive) manufacturers, and other polyurethane resin manufacturers can refer to the implementation. Implementation date: 2023-04-01 4. Adhesive for labeling (HG/T 6099-2022) This docume

According to market research institute Data Bridge Market Research, the European market for methylenediphenyl diisocyanate (MDI), toluene diisocyanate (TDI), and polyurethane was valued at $5.52 billion in 2021 and is expected to reach $8.09 billion by 2029, growing at a CAGR of 4.9% during the forecast period. The construction industry has seen tremendous growth in recent years, as have the automotive and consumer goods industries, which have had a significant impact on the methylenediphenyl diisocyanate (MDI), toluene diisocyanate (TDI) and polyurethane markets. The market is expected to grow at the same rate during the forecast period. Thermoplastic Polyurethane (TPU) is a type of polymer resin that is known for its flexibility, durability, and versatility. It is a thermoplastic material, which means it can be melted and reprocessed multiple times without losing its original properties. TPU is commonly used in various industries, including automotive, electronics, footwear, and sportswear. It is often used to make products such as phone cases, cables, hoses, seals, gaskets, and inflatable structures.

In refrigerators, foam material usually fills the entire box, in order to keep the internal temperature of the refrigerator constant and provide better thermal insulation. The use of lower carbon feedstocks includes two directions, namely the use of blowing agents with lower GWP values and lower carbon foams. Regarding blowing agent substitution, the refrigerator industry has basically completed the elimination of HFC-245fa. Carbon emission reduction from the entire polyurethane industry chain is crucial for the refrigerator industry to achieve the "dual carbon" goal. Wanhua Chemical proposed polyurethane foam life cycle solution. The relevant person in charge of Wanhua Chemical said: "We recombine waste polyurethane materials at the molecular level by chemical methods, and then generate polyurethane materials through new chemical reactions. The reaction conditions of this technology are relatively mild, and the product can be directly used for foaming, which has great practical value in the field of polyurethane recycling and can significantly improve economic benefits. In addition, this recycling process enables the foam to be reused without downgrading. " Thermoplastic Polyurethane (TPU) is a type of polymer resin that is known for its flexibility, durability, and versatility. It is a thermoplastic material, which means it can be melted and reprocessed multiple times without losing its original properties. TPU is commonly used in various industries, including automotive, electronics, footwear, and sportswear. It is often used to make products such as phone cases, cables, hoses, seals, gaskets, and inflatable structures.

According to the "Analysis of the Operation Status of China's Polyurethane Industry and Investment Strategy Research Report (2023-2029)" released by the research report network, polyurethane is widely used, and with the rapid development of China's national economy, polyurethane consumption continues to grow. In 2020, China's polyurethane consumption was 12.4 million tons, a year-on-year increase of 4.64%; In 2021, China's polyurethane consumption was 12.63 million tons, a year-on-year increase of 1.85%. Among them, polyurethane flexible foam consumption accounted for 27%, and the main application areas included lining materials in car seats, furniture, and fabric upholstery; Secondly, the consumption of polyurethane rigid foam accounts for 26%, which is mainly used in the fields of thermal insulation and insulation such as refrigerators, freezers, cold chain logistics, and other fields such as building exterior wall insulation and energy saving. From the perspective of polyurethane production and sales, in recent years, China's polyurethane production and sales rate is less than 1 and has shown a downward trend year by year, only 84.4% in 2020, indicating that China's polyurethane overcapacity has intensified and export dependence has increased. Polyester polyol is a type of polyol that is derived from the reaction between a polyol (such as glycerol or ethylene glycol) and a dicarboxylic acid (such as adipic acid or phthalic anhydride). It is commonly used as a raw material in the production of polyurethane foams, coatings, adhesives, and elastomers. Polyester polyols have several advantages over other types of polyols. They have good chemical resistance, mechanical properties, and thermal stability. They also have low toxicity and are environmentally frien

In 2022, as the core component of refrigerator polyurethane rigid foam, the white material, black material and refrigerator industry have fallen into a downturn. In order to get out of the predicament, mainstream white material and black material enterprises are closer to the needs of the whole machine factory, reduce costs and increase efficiency, and work together to break through. Both white and black materials have encountered the dilemma of market downturn. There are two reasons for this: First, weak domestic demand, supply chain disruptions caused by the epidemic, and restrictions on economic activities, resulting in a decline in terminal consumer confidence in the domestic market. Second, foreign demand has weakened, and China's refrigerator exports have continued to decline due to the slowdown in global economic growth and conflicts. In the face of sluggish demand, cost reduction and efficiency improvement are the main measures for the whole machine factory to enhance its competitiveness. In 2022, under the condition that the price of polyurethane main raw materials and the market demand for downstream refrigerators are at a low level, the industry has not given up hope, but has carefully cultivated in technology and waited for the flowers to bloom. Thermoplastic Polyurethane (TPU) is a type of elastomer that is known for its flexibility, durability, and resistance to abrasion, oil, and chemicals. It is a versatile material that can be used in a wide range of applications, including footwear, automotive parts, industrial seals, medical devices, and consumer electronics. TPU is created by combining a polyol and an isocyanate in a reaction that forms a polyurethane chain. The resulting material has a unique combination of properties, including high tensile strength, good