A number of mandatory national standards in the implementation of the water-based polyurethane material ushered in the east wind

November 13, the Ministry of Industry and Information Technology issued "wood coatings in the limit of harmful substances" and other 8 chemical industry mandatory national standards for approvalThe new national standard will be polyurethane coatings, adhesives and other industries VOCs emissions put forward higher requirementsOn November 13-15, china polyurethane Industry Association, water-based materials committee and Osja Materials Technology (Shanghai) Co., Ltdhosted the 5th water-based polyurethane research technology exchange conference, industry experts believe that with the country in VOC emissions and other environmental requirements continue to improve, polyurethane hydraide will usher in the east windProfessor of Anhui University said that China's current water-based polyurethane in the polyurethane industry accounted for a small proportion, in 2018 China's polyurethane production of about 11 million tons (equivalent to pure solid content), water-based polyurethane production of about 100,000 tons, of which 30,000 tons of pure solid contentHowever, water-based polyurethane is a very important productIn recent years, due to the improvement of environmental protection requirements and awareness, China's water-based polyurethane industry has developed rapidly, the growth rate far exceeds that of the polyurethane industry as a wholeFrom the initial leather coating, to textile coatings, synthetic leather slurry, wood coatings, industrial coatings, automotive coatings, polyurethane condoms, water-based polyurethane applications continue to expand, the level of technology continues to improveenvironmental regulation has opened up new development space for water-based polyurethane materialsIn order to implement the "State Council on the issuance of the three-year action plan to win the blue sky defense war", the Ministry of Ecological Environment issued in July this year, "the key industry volatile organic compound comprehensive management plan" clearly put forward, strengthen the comprehensive management of industrial coating VOCsTo strengthen source control, speed up the use of water-based and other low VOCs content of paint to replace solvent-based coatings, including automobile manufacturing, steel containers, wood furniture, construction machinery, electronic products manufacturing coatings, soft furniture water-based adhesivesthe Ministry of Industry and Information Technology issued the 8 chemical industry mandatory national standards in the public ity, "adhesive volatile organic compound limit" "industrial protective coatings in the limit of hazardous substances" "building wall paint hazardous substances limit" wood coating sleamo quality limit" "vehicle paint in the limit of hazardous substances" 5 standards are related to the polyurethane industry"These mandatory standards are not far from being formally implementedThese initiatives are also aimed at further limiting VOCs emissions from the chemical industry, and will also bring new development opportunities to polyurethane hydrochemical materialsHan Baole, deputy secretary-general of the China Polyurethane Industry Association, saidThe deputy director of the water-based materials committee of thePolyurethane Association said that there are many types of polyurethane hydrancy products, including adhesives, coatings, and leather resins With the introduction of mandatory standards, there will be a number of enterprises facing transformation and upgrading Take coating enterprises as an example, it is estimated that 70%-80% of enterprises can meet the new national standards to be implemented, and 20%-30% of enterprises are not up to standard, must be through water-based environmental upgrading to meet policy requirements , however, the development of water-based polyurethane is also facing some technical problems that need to be solved urgently Vice Chairman of China Polyurethane Industry Association, Director of the Water Special Committee, Chairman of The Chairman of Osjia Materials Technology (Shanghai) Co., Ltd., believes that most of the current water-based polyurethane dispersion production process still uses solvents, resulting in solvent recovery and reuse problems How to reduce the amount of organic solvent through the research and development of new synthesis process and raw materials, and finally realize solvent-free green production, is an important research topic in the development of water-based polyurethane materials " in a water-based polyurethane synthesis process, solvents are used to help dissolve reactants, reduce pre-polymer viscosity, and help disperse Water-based polyurethane synthesis requires higher solvent performance, solvent must be inert, and mixed with water, reaction substances and products have a good solubility, and boiling point should also be within a certain range At present, water-based polyurethane synthesis needs to use acetone and other solvents, these are flammable and explosive dangerous goods, in the production and transportation process by a lot of constraints, so it is urgent to develop a new non-toxic safety solvent Professor of Anhui University explained Professor at Anhui University also suggested that water-based polyurethanes, although less VOC emissions during application, tend to produce more exhaust gases and waste than solvent-based products during synthesis and use How to reduce the "three waste" emissions, is also placed in the water-based polyurethane industry in front of an important issue four water-based resinepoxy, acrylic, alkyd acid, polyurethane performance can be said to have certain advantages, but the application ratio is still low "In fact, China's water-based polyurethane material research time is relatively long, there are many good technology The main problem is the lack of high-end raw materials For example, water-based materials required for high-end curing agents, special polyols, fatty people isocyanate and other raw materials, due to the high technical threshold, many are foreign patented technology, restricting the development of the industry Downstream application this we because the market is very large, so the development is very fast, but the current lack of Chinese brands Most of our polyurethane brands are concentrated upstream "In the view of professors at Anhui University, to improve the level of development of the water-based polyurethane industry, it is necessary to have two hair forces, upstream and downstream co-development " the industry needs to further conduct more basic research on the membrane mechanism of water-based polyurethane dispersions, and improve the corresponding supporting systems, including equipment and additives "China Polyurethane Industry Association Vice Chairman, Director of the Water Commission, Osja Materials Technology (Shanghai) Co., Ltd Chairman said He hoped that the hydropolymine association water-based special committee can build a high-quality communication platform from material research and development to user-use, and promote the healthy development of the water-based polyurethane industry it is understood that Covestro, Wanhua Chemical, Huntsman and other leading polyurethane enterprises, long-term focus on water-based polyurethane material research and development, is committed to providing more environmentally friendly, sustainable solutions Covestro offers a wide range of solutions for high-performance polyurethane water-based shoe adhesives, water-based PP sole coatings and more In terms of raw materials, Wanhua developed a new isocyanate monomer XDI/H6XDI reaction activity is higher, unique molecular structure can give water-based resin better mechanical properties and better heat resistance