Classified by use
- Sealing adhesive
Mainly used for the connection of doors, windows and prefabricated houses. High-end sealing adhesives include silicone and polyurethane adhesives, while mid-range sealing adhesives include neoprene adhesives, polyacrylic acid, etc. In my country, in the construction adhesive market, silicone adhesives and polyurethane sealing adhesives should be the direction of future development. Currently, they account for about 30% of the sales volume of construction sealing adhesives.
- Adhesives for building structures
Mainly used for connections between structural units. For example, for external repairs of reinforced concrete structures, metal reinforcement and fixation, and construction on-site construction, epoxy resin series adhesives are generally considered.
- Adhesives for automobiles
It is divided into 4 types, namely adhesives for vehicle body, vehicle interior decoration, windshield and vehicle chassis.
At present, the annual consumption of automotive adhesives in my country is about 40,000 tons, of which the largest quantities are polyvinyl chloride plastic adhesives, neoprene rubber adhesives and asphalt series adhesives.
- Adhesives for packaging
It is mainly used to make pressure-sensitive tapes and pressure-sensitive labels, and to bond the surfaces of packaging materials such as paper, plastic, and metal. The adhesive used for paper packaging materials is polyvinyl acetate emulsion. Adhesives for plastic and metal packaging materials are polyacrylic emulsion, VAE emulsion, polyurethane adhesive and cyanoacrylate adhesive.
- Electronic adhesives
The consumption is relatively small, currently less than 10,000 tons per year, and most of it is used in integrated circuits and electronic products. Currently, epoxy resin, unsaturated polyester resin, and silicone adhesive are mainly used. We can supply end-capping adhesives for electronic components with a thickness of 5 microns ourselves, but adhesives for electronic components with a thickness of 3 microns need to be imported from abroad.
- Adhesives for shoemaking
The annual consumption is about 125,000 tons, of which 110,000 tons are needed for neoprene adhesives and about 15,000 tons of polyurethane adhesives. Since chloroprene rubber adhesives require benzene as a solvent, and benzene is harmful to the human body, its development should be restricted. In order to meet the development needs of the shoemaking industry, the use of polyurethane series adhesives will be the direction.