Research has found that there are natural resins and synthetic resins. Natural resins are amorphous organic substances obtained from the secretions of plants and animals in nature, such as rosin, amber, wormwood and so on. Synthetic resin refers to the resin products obtained by chemical synthesis of simple organic substances or by chemical reaction of certain natural products.

Rosin, benzoin, etc. are natural resins, and phenolic resins, polyvinyl chloride resins, etc. are synthetic resins. Resin is the main raw material for the manufacture of plastics, and is also used to make coatings (film-forming substances, such as the Guangdong Sanying Resin and other series of products), adhesives, insulating materials and so on.

The main components of resin:

Resin is a mixture of many components, including resin acids, resin alcohols, resin hydrocarbons and some of their higher polymers. In recent years, it is known that most of these components are derivatives of diterpenes, triterpenes, and sometimes lignans. Detailed>>

Classification and use of resin

1, according to the resin synthesis reaction classification

According to this method, the resin can be divided into polymerization and polycondensation. Addition refers to the polymer produced by the addition polymerization reaction, the chemical formula of its chain structure and the molecular formula of the monomer is the same, such as polyethylene, polystyrene, polytetrafluoroethylene and so on.

Condensate refers to polymers produced by condensation polymerization reaction, the chemical formula of its structural unit is different from the molecular formula of the monomer, such as phenolic resins, polyester resins, polyamide resins and so on.

2、According to the source

There are natural resins and synthetic resins. Natural resins are amorphous organic substances obtained from the secretions of plants and animals in nature, such as rosin, amber, wormwood, etc..

Synthetic resin refers to the resin products obtained by chemical synthesis of simple organic substances or certain natural products by chemical reaction, such as phenolic resins, PVC resins, etc., of which synthetic resins are the main components of plastics.

3、Classification according to the main chain composition of resin molecules

According to this method, the resin can be divided into carbon chain polymers, heterochain polymers and elemental organic polymers.

Carbon chain polymers are polymers whose main chain is composed of carbon atoms, such as polyethylene, polystyrene and so on.

Heterochain polymers refers to the main chain of carbon and oxygen, nitrogen, sulfur and other atoms of two or more elements of the polymer, such as polyformaldehyde, polyamide, polysulfone, polyether and so on. Elemental organic polymers are polymers that do not necessarily contain carbon atoms in the main chain, mainly composed of silicon, oxygen, aluminum, titanium, boron, sulfur, phosphorus and other elements of the atom, such as silicone.

4, according to the nature of the resin classification

Thermosetting resin (glass fiber reinforced plastic is generally used in such resins): unsaturated polyester / vinyl ester / epoxy / phenolic / bismaleimide (bmi) / polyimide resin.

Thermoplastic resins: polypropylene (pp) / polycarbonate (pc) / nylon (nylon) / polyether ether ketone (peek) / polyethersulfone (pes) and so on.