High temperature resistant and non-shrinkable electrical film

Abstract

The invention relates to the field of packing materials, and specifically discloses a high temperature resistant and difficult shrinking electrical membrane. The electrical membrane is mainly prepared from the following raw materials by mass: 100 parts of polyvinyl chloride powder, 5-20 parts of calcium powder, 1-5 parts of epoxy soybean oil, 2-5 parts of a stabilizing agent, 20-45 parts of an insulation plasticizer, and 5-15 parts of a high temperature resistant plasticizer. The electrical membrane also includes the following auxiliary materials: 0.5-1 part of titanium dioxide, 0.4-0.5 part of pigments, continuous, and 0.1-0.2 part of a bright lubricant. In addition to meeting the needs of various electronic parts for electrical membranes with uniform thickness, good viscosity, high temperature resistance and the like, the electrical membrane made according to the formula of the invention can achieve static shrinkage of -0.5%, has very good antishrinking ability, and can prevent electronic part damage caused by electronic part outer membrane shrinkage under high temperature. With excellent insulating property under high temperature, the electrical membrane provided in the invention adopts a non-toxic formula, is harmless to the human body, and is environment-friendly to use.

Description

technical field [0001] The invention relates to the field of packaging materials, in particular to an electrical film resistant to high temperature and not easy to shrink. Background technique [0002] Electrical film is a thin film with excellent electrical properties. It is usually made of high molecular polymer and some auxiliary materials. The forming methods include calendering, extrusion, and salivation. Forming method, T-die method, etc. The general thickness of the electrical film is less than 350 microns, and it is insoluble in commonly used organic solvents, so it can meet the special requirements of electrical products, such as corrosion resistance, heat resistance, radiation resistance, etc., and is generally used for insulation of electronic parts, automotive wiring, wires Winding, insulation protection, etc. [0003] At present, there are many electrical film manufacturers, and their output has more than doubled in the past five years, and the price of raw ma...

AI Technical Summary

Problems solved by technology

[0004] At present, the electrical film on the market has poor shrinkage resistance at high temperatures. After a period of high temperature use, the film gradually shrinks, thus losing insulation, corrosion resistance, and heat resistance, resulting in a decrease in the performance of the product it protects, and even resulting in The protected component is damaged