High-mechanical strength and aging-resistant PVC trunking board

Abstract

The invention discloses a high-mechanical strength and aging-resistant PVC trunking board. The high-mechanical strength and aging-resistant PVC trunking board comprises the following raw materials in parts by weight: 50-70 parts of PVC resin, 20-30 parts of binary fluorine rubber, 1-2 parts of tert-butyl peroxide, 0.6-1.2 parts of 2-ethyl-4-methylimidazole, 0.4-1 part of magnesium oxide, 10-16 parts of calcium hydrate silicate, 4-8 parts of phosphorite, 4-8 parts of titanium dioxide, 2-6 parts of soot, 10-15 parts of zinc borate, 15-25 parts of modified bentonite, 1-2 parts of a silane coupling agent KH550, 2-4 parts of sodium stearate, 2-4 parts of fluorinated polyamide, 0.4-0.8 part of benzyl triphenyl phosphorus chloride, 1-2 parts of tritolyl phosphate, 0.6-1 part of chlorinated paraffin, 2-4 parts of a foaming agent and 2-4 parts of an ultraviolet absorber. The high-mechanical strength and aging-resistant PVC trunking board has excellent permanent compression performance, can be used for a long time under high-temperature and high-pressure conditions, and has excellent mechanical properties, heat stability and aging resistance.

Description

technical field [0001] The invention relates to the technical field of PVC, in particular to a PVC trunking board with high mechanical strength and aging resistance. Background technique [0002] PVC trunking board is made of PVC plastic, which has the characteristics of insulation, arc prevention, flame retardant and self-extinguishing, etc. It is mainly used for internal wiring of electrical equipment, and plays a role of mechanical protection and electrical protection for the wires laid therein. With the current development, the requirements for the mechanical properties, thermal stability and aging resistance of PVC trunking boards are getting higher and higher. Especially for outdoor wiring, people also require it not only to have high aging resistance and mechanical properties, but also in It has a certain heat-resistant stability in the event of a fire hazard, ensuring that the internal cables maintain normal operation for a certain period of time. At present, the gen...

AI Technical Summary

Problems solved by technology

With the current development, the requirements for the mechanical properties, thermal stability and aging resistance of PVC trunking boards are getting higher and higher. Especially for outdoor wiring, people also require it not only to have high aging resistance and mechanical properties, but also in It has a certain heat-resistant stability in the event of a fire hazard, ensuring that the internal cables maintain normal operation for a certain period of time. At present, the general plastic PVC trunking board cannot meet the demand. How to prepare a high mechanical strength and good thermal stability. Outdoor PVC trunking board with excellent aging resistance has become a technical problem that needs to be solved at present