The trend of increasing environmental protection adhesive-Iota

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Service > The trend of increasing environmental protection adhesive

The trend of increasing environmental protection adhesive

Development is closely related to Adhesives and Sealants industry and the automotive, construction, electronics, aerospace, machinery, textiles, footwear, packaging, metallurgy, paper making, health care and other industries, its products are not only widely used in these areas, but also directly applied Among people's lives. China's current synthetic adhesives manufacturers about 2000, can produce more than 2500 kinds of varieties of brands of products, production capacity of 3 million t / a. With the growing improve China's environmental protection regulations, and raise awareness of their own health, good quality, clean, with international standards of environment-friendly adhesive synthetic adhesives are becoming mainstream products.
First, coming out of the breed
1. polyvinyl formal adhesive
Polyvinyl formal adhesive (107 plastic) is mainly used for building renovation. The adhesive because it contains formaldehyde, damage to human health in developed countries have already banned. In China, this product because of its low price, the current amount is still relatively large. With increasing consumer awareness of environmental protection and law enforcement authorities, the 107 will be decreasing the amount of glue, I believe in the near future will be eliminated.
2. Neoprene Adhesives
Neoprene is a traditional bulk adhesive varieties, commonly known as all-purpose adhesive, mainly for footwear, decoration and wood processing industries. Neoprene contain large amounts of toxic organic solvents, and thermoplastic elastomers for soft PVC, polyurethane and other new shoe material bonding the poor, no longer meet the needs of developments in the footwear industry. In developed countries, shoe adhesives used safer polyester glue and hot melt. In recent years, due to the implementation of environmental regulations has intensified, neoprene adhesive amount is declining, production in 2002 fell by 16.8 percent from 2001.
Second, promising varieties
An aqueous adhesive
Water-based adhesive does not contain organic solvents, non-polluting, environmentally friendly adhesive products. In recent years water-based glue rapid development in China, the average annual output growth of 18.4%, which is one of the faster-growing plastic types. In production growth, product quality is improving, increasing varieties. Some high technological content, good adhesive properties are emerging, such as cold water and good emulsion, scrub, stain and water resistance good organic modified acrylic construction emulsion. Currently, in addition to conventional acrylic, polyvinyl acetate and VAE emulsion, the polyurethane emulsion of research and development have made progress, there will be good prospects for development.
2. The hot-melt adhesives and hot melt pressure sensitive adhesive
Melt pollution, rapid curing, bonding a wide surface, suitable for continuous production, easy storage and transportation. The product is developed rapidly in recent years, the average annual production growth rate of 30.1 percent, is the fastest growing species in China. In developed countries, hot-melt adhesives (including hot melt pressure sensitive adhesive) accounted for more than 20% of the total amount of synthetic adhesives, while China accounted for only 3%.
3. The polyurethane adhesive
Polyurethane adhesives are widely used in footwear, construction, automotive and other fields, because of its excellent performance is considered to be one of the most types of plastic have development potential. In developed countries, the shoe business polyurethane adhesives, sealants used in construction mainly silicone and polyurethane rubber. In addition, food packaging and tapes are also used in polyurethane adhesive, its use is widespread.
4. Silicone Adhesives
Silicone adhesives developed a great amount of silicone rubber sealant is the largest species, accounting for about 30% of the total consumption of the sealant. Less the amount of silicone adhesive, but has grown rapidly in recent years, is expected in five years silicone sealant will become the dominant kinds of glue sealant used in construction.
Third, the urgent need to improve the breed
Production of urea-formaldehyde glue wood processing plants, mainly in captive use, poor professional production, low level of technology, products, formaldehyde emission generally four to five times higher than international standards, great harm to human health. Currently, China is developing national standards with international standards, and the implementation of some key enterprises. Now there are a small number of production enterprises, especially the "funded" production of urea-formaldehyde glue free formaldehyde content has been reduced to 0.1%. Shandong Heli Hua Engineering Co., powdered urea-formaldehyde resin production plant in Jilin Tonghua forestry plants imported from Germany, has been trial production, product formaldehyde emission class EI can meet international standards, product quality has the international advanced level, China's timber development of processing industries provide a guarantee for raw materials. The expert analysis, "15" period, in line with international standards of urea-formaldehyde glue will become the dominant product.

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