Primary agents are the main constituents of the adhesive, a leading adhesive properties, and is also an important symbol of different adhesive categories. Master agent generally consists of one or two or even three types of polymer form, requires a good adhesion and wettability. Can be used as a sticky substance:
1. natural polymers, such as starch, cellulose, tannin, gum Arabic and plant sticky materials such as sodium alginate, and bone glue, gelatine and blood fibrin glue, casein and Lac, animal glue.
2. synthetic resin, is divided into two categories of thermosetting and thermoplastic resin. Thermosetting as ring oxygen, and phenolic, and not saturated polyester, and polyurethane, and organic silicon, and poly n Asia amine, and double Malay n Asia amine, and en c base resin, and furan resin, and amino resin, and alkyd resin,; thermoplastic resin as polyethylene, and polypropylene, and PVC, and polystyrene, and acrylic resin, and nylon, and poly carbonate ester, and poly formaldehyde, and thermoplastic polyester, and PPO, and fluoride resin, and poly benzene sulfur ether, and poly sulfone, and poly ketone class, and poly benzene ester, and LCD polymer,, and its modified sex resin or polymer alloy,. Is the largest amount of a sticky material.
3. rubber and elastomers. Main Chloroprene rubber nitrile EPDM, butyl rubber, fluorine rubber, POLYISOBUTYLENE, polysulfide rubber, natural rubber, chlorosulfonated polyethylene rubber; elastomers mainly thermoplastic polyurethane elastomer and elastomer.
4. in addition, inorganic adhesive materials, such as silicate, phosphate and copper oxide-phosphate.