plastic padlock security seals

plastic padlock security seals
plastic padlock security seals

2013年8月5日星期一

Common resin sealing material

Commonly used in the resin sealing tamper seals material is polytetrafluoroethylene, phenolic resin, polyamide resin and the like.
1, PTFE Teflon is a polymer, is the world is the best corrosion resistance of the material, known as "plastics king" reputation. It can in any chemical medium and long-term use, it produces solve our country's chemical, petroleum, pharmaceutical and other fields of many problems.
2, the phenolic resin is a phenol and formaldehyde in proportion to the ratio of the polymerization catalyst. It has good mechanical properties, heat resistance, the disadvantage is brittle, poor workability.
3, commonly known as nylon polyamide, by polycondensation of dicarboxylic acids and diamines made or is made from the amino acid dehydration polymerization of caprolactam again. It is high strength and good toughness,security seals wear-resistant and self-lubricating excellent. Disadvantage is impatience acids, alkalis and phenolic substances.

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