Shanghai Daoqin Plastics Co., Ltd.

一: raw materials selection

1. resin selection different resin product types its versus products gloss property large same. for/regarding PP 说, random copolymer gloss degree most good. for/regarding PE 说, LDPE most good. for/regarding PVC 说, method most good. for/regarding PS 说, HIPS most good.

2. resin features solvent flow speed rate （MFR）越 large, gloss degree good. molecular weight distribution wide, products gloss degree 越差. water absorption high resin gloss degree 也差.

二: additives selection effect/influence most large is filler, its is increase agent, stabilizer and flame retardant and other

1. filler product types metal salt effect/influence most small, its is carbon acid 钙, most large is 云母

2. filler 形状 球状, effect/influence small, 针状, sheet/slice effect/influence large

3. filler degree filler degree small, for gloss degree effect/influence small

4. filler add amount add amount more, gloss degree 越差

5. filler surface treatment surface treatment versus for need 差点

6. large separation increase agent can increase gloss degree, is DBP例 outer

7. stabilizer in CaSt and BaSt会 reduce gloss degree, 而PbSt and has machine can high gloss degree

8. has lubricant can increase gloss 素

9. flame retardant reduce gloss degree

三: plastics add increase methods

1. gloss agent polyether, high grade 脂肪烃, amine combined material, heavy metal, surface active property agent, alcohol and other

2. outer lubricant liquid wax, polyethylene wax, hard acid, di hard amine, silicon and other

3. nucleating agent acid and other

4.特殊 color agent light increase agent and other

四: plastics blending increase methods in PVC in add 入PMMA, LLDPE in add 入LDPE

五: plastics control increase methods di tensile technology, control processing temperature degree

六: reduce molding equipment coarse degree

七: plastics surface increase 亮