Common organic high-temperature adhesives mainly include silicone adhesives, phenolic resin adhesives, temperature-resistant epoxy adhesives, etc. The general high-temperature resistance of these glues is below 400°C. Generally, in order to give these glues more performance, some functional fillers, such as insulation, heat conduction, fire resistance, flame retardant, etc., can usually be added. Although they are resistant to high temperatures, these glues each have other "attributes", which are soft and elastic, but also hard and rigid. Among them, epoxy glue has the highest strength, and the effect of temperature resistance and high-speed operation is also very good, so it is generally used in the fields of aircraft model motors, functional ceramics and so on.

High temperature resistant adhesive is a kind of high temperature resistant inorganic adhesive. After curing, it has good adhesion, is hard and does not crack. What are the high temperature resistant adhesives? We can get a comprehensive understanding from the classification of high-temperature adhesives.

1. High temperature resistant adhesives are classified according to the main chemical composition or base material

According to the main chemical composition or base material of the adhesive, the adhesive can be divided into two categories: inorganic adhesive and organic adhesive.

2. Classified by apparent physical form

According to the appearance of adhesives on the market, people often divide adhesives into the following four types.

(1) Solvent type. Synthetic resin or rubber is mixed into a solution with a certain viscosity in a suitable solvent. All synthetic resins are mainly thermosetting and thermoplastic. Therefore, rubber includes natural rubber and synthetic rubber.

(2) Emulsion type. Synthetic resin and rubber are dispersed in water to form aqueous solutions and emulsions

(3) Paste or paste type. This is a kind of volatile high-viscosity adhesive that is made of synthetic resin and rubber, mainly used for sealing and caulking.

(4) Solid type. Generally, thermoplastic synthetic resin or rubber is made into pellets, blocks or ribbons, which can be coated after heating and melting, and solidified after cooling. It is also called hot-melt adhesive film type. The adhesive is coated on various substrates (paper, cloth, glass, etc.) in the form of a film-like tape, or synthetic resin or rubber is directly used as a film. The latter often requires higher adhesive strength.