2013年7月30日星期二

Physical and chemical properties of plastic additives

plastic additive increase the substrate from the physical and chemical characteristics are analyzed:
Additives include: ① rigidity, strength: fillers, nucleating agents; ② impact: the impact modifier; ③ Heat resistance: fillers, nucleating agents; ④ Flammability: flame retardants; ⑤ Weather resistance: UV stabilizer stabilizer; ⑥ Conductivity: antistatic agents conductive coating filler;

⑦ Color: pigment; ⑧ Flex: plasticizers processing oil; ⑨ density: foaming agent ; ⑩ Transparency: nucleating agents, sexual health: antibacterial agent.
Antioxidant additives are unsaturated double bonds in the plastic by an oxygen atom, the invasion of heat and light, free radicals cause fracture, thereby causing a chain reaction, the molecular chains or the formation of the crosslink, resulting in the strength of plastic products decrease or become brittle. Antioxidants

The feature is that the delay due to oxidation and decomposition of the plastic, extending the life of plastic products.

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