Glue is an intermediate connecting two materials, which mostly exists in the form of aqua. It belongs to fine chemical industry, and there are many kinds, mainly according to the adhesive, physical form, hardening method and classification method of the adhered materials.

Glue does not exist independently, it must be applied between two objects to play a bonding role.

Extended data:

Sealant refers to a sealing material that deforms with the shape of the sealing surface, is not easy to flow, and has certain cohesiveness. It is an adhesive, which is used to fill the configuration gap and play a sealing role. It has the functions of leakage prevention, waterproof, vibration prevention, sound insulation and heat insulation.

It is usually made of dry or non-dry viscous materials, such as asphalt, natural resin or synthetic resin, natural rubber or synthetic rubber, etc. , with talcum powder, clay, carbon black, titanium dioxide, asbestos and other inert fillers, and then with plasticizer, solvent, curing agent and accelerator.

It can be divided into three categories: elastic sealant, liquid sealant and sealing putty. Widely used in construction, transportation, electronic instruments and parts sealing.

References:

Baidu encyclopedia-sealant