Adhesives in our They are widely used in daily life, especially the development of polyurethane adhesives is increasing day by day. So what are the common application fields of polyurethane adhesives? Come and have a look with the author.
1、CarpentryField
With the improvement of people’s environmental awareness, the wood processing industry is gradually using new environmentally friendly polyurethane adhesives to replace formaldehyde-based urea-formaldehyde resin to reduce environmental pollution. One-component moisture-curing polyurethane adhesives used in the woodworking industry are liquids and are used at room temperature. Usually has high bonding strength, good flexibility and water resistance, and can be used with a variety of non-wood substrates（Such as metal, plastic , rubber, etc.)gluing. The dry and wet strength of one-component polyurethane glue is better than that of phenolic glue. Before bonding, coat the surface of the bonding base with hydroxymethylresorcinolCombiningagent can improve the bonding strength.
2、Shoemakingfield
China has always been a major shoe-making country. In recent years, the preparation technology of water-based polyurethane has become increasingly advanced. Mature. For some low-polarity shoe materials, such asSBS, the peel strength of polyurethane glue cannot meet the requirements. By adding tackifying resin, a polyurethane adhesive for shoes with high crystallinity, fast crystallization speed, high bonding strength and ideal peel strength can be developed.
3, Packagingfield
Flexible packaging is known for its unique comprehensive properties, such as light weight, convenience, and long shelf life , hygienic, easy to store and transport, easy to disassemble, less waste, and good shelf effect, it has surpassed rigid packaging such as plastic, glass bottles and cans. Due to its excellent properties, polyurethane adhesive can bond different film materials together to obtain flexible packaging composite films with various properties such as cold resistance, oil resistance, drug resistance, transparency, and wear resistance. At present, polyurethane adhesives have become the main adhesive for processing flexible packaging composite films in domestic and foreign markets.
4、Building paving Field
Polyurethane adhesive is not only non-toxic, Environmental protection, easy to use, and also has advantages unmatched by other adhesives, namely excellent low temperature resistance, solvent resistance, aging resistance, ozone resistance, and antibacterial properties. It is used in construction pavements. Materials play an important role in their applications. Widely used in elastic rubber floor mats, hard rubber floor tiles and sports fields with plastic tracks<font face=" It is also used for caulking, thermal insulation, heat insulation, sound insulation, etc. of building doors and windows. The new two-component polyurethane adhesive breaks through the shear strength and peeling strength of traditional adhesives The contradiction between strengths allows both to reach higher intensity of use at the same time. It is used in the bonding of steel plates for construction.Deliver excellent performance. The bonding is strong, not easy to deform, and the curing speed can be adjusted at room temperature, making the polyurethane adhesive easy to use and versatile.
5、Car Field
Widely used in automobiles The polyurethane adhesives mainly include: one-component moisture-curing polyurethane sealant for windshield assemblies; structural adhesives for bonding fiberglass and sheet-molded composite materials, two-component polyurethane adhesives and water-based polyurethane for interior parts Glue, etc., and some automotive parts require polyurethane foam materials Filling to seal or shockproof. Automotive interior parts are also an area where adhesive usage is increasing. Water-based polyurethane adhesives widely used in automobiles refer to adhesives formed by dissolving or dispersing polyurethane in water.
Title of this article: Five major application fields of polyurethane adhesives
Source of this article: http:// www.wellgo.com.cn/newb/information_2357.shtml
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