Classify adhesives according to their composition

There are many types of adhesives, including urea formaldehyde resin adhesive, polyvinyl acetate adhesive, polyacrylic acid resin adhesive, polyacrylic acid resin adhesive, polyurethane adhesive, hot melt adhesive, epoxy resin adhesive, synthetic adhesive, and so on.

1. Organic silicone adhesive

It is a sealing adhesive with characteristics such as cold resistance, heat resistance, aging resistance, waterproofing, moisture resistance, high tensile fatigue strength, small permanent deformation, and non toxicity. In recent years, this type of adhesive has developed rapidly in China, but currently, some of the raw materials for organic silicone adhesives in China rely on imports.

2. Polyurethane adhesive

It can bond multiple materials and maintain their physical and chemical properties even at low or ultra-low temperatures. It is mainly used in fields such as shoe making, packaging, automotive, magnetic recording materials, etc.

3. Polyacrylic acid resin

Mainly used in the production of pressure-sensitive adhesives, as well as in the textile and construction fields.

Building adhesive: mainly used for decoration, sealing, or bonding between structures in construction projects.

4. Hot melt adhesive

According to different raw materials, it can be divided into EVA hot melt adhesive, polyamide hot melt adhesive, polyester hot melt adhesive, polyolefin hot melt adhesive, etc. At present, EVA hot melt adhesive is mainly produced and used in China. The main raw materials for polyolefin series adhesives are ethylene series, SBS, and SIS copolymers.

5. Epoxy resin adhesive

It can be used for bonding between metals and most non-metallic materials, and is widely used in construction, automobiles, electronics, appliances, and daily household items

6. Urea formaldehyde resin, phenolic aldehyde, melamine formaldehyde adhesive

Mainly used in the wood processing industry, the formaldehyde release after use is higher than international standards.

Adhesive for wood processing: used for medium density fiberboard, gypsum board, plywood, and particle board, etc

7. Synthetic adhesive

Mainly used in fields such as wood processing, construction, decoration, automobiles, shoemaking, packaging, textiles, electronics, printing and binding. At present, China imports nearly 200000 tons of synthetic adhesives annually, including hot melt adhesives, organic silicon sealing adhesives, polyacrylic acid adhesives, polyurethane adhesives, and PVC plastic adhesives for automobiles. At the same time, approximately 20000 tons of synthetic adhesives are exported annually, mainly polyvinyl acetate, polyethylene formaldehyde, and pressure-sensitive adhesives.