| abstract |
The invention discloses an insulating layer of an electrical connecting wire, which is made of the following raw materials in parts by weight: 80-100 parts of modified polyethylene resin, 8-10 parts of thermoplastic vulcanized rubber, 12-15 parts of filler, and 16-20 parts of plasticizer , 4-5 parts of heat stabilizer, 2-3 parts of lubricant, and 0.8-1 part of antioxidant; the invention also discloses a preparation method of the insulating layer. In the present invention, modified polyethylene resin is used as the base material, the polyethylene is modified by a modifier, and part of the cross-linking agent is replaced for cross-linking, and the obtained modified resin has high heat resistance, purity and insulation. performance; by adding fillers to the base material, attapulgite and zinc borate can improve the flame retardant properties of the insulating layer material, and glass fiber can enhance the mechanical properties of the insulating layer material; a kind of heat-resistant, good insulating performance and mechanical properties can be obtained. The high insulating layer, as the outer layer of the electrical connecting wire, can not only effectively protect the core wire, but also meet the requirements of use, and has extremely high application value. |