High-insulativity halogen-free flame-retardant insulation material for household appliances and preparation method thereof

Abstract

The invention relates to a high-insulativity halogen-free flame-retardant insulation material for household appliances. The high-insulativity halogen-free flame-retardant insulation material is prepared by adopting the following raw materials in parts by weight: 3 to 4 parts of calcined pottery clay, 8 to 9 parts of thermoplasticity polyimide, 5 to 6 parts of nano hydroxyl aluminum oxalate, 10 to 15 parts of low-density polyethylene resin, 0.3 to 0.4 part of vinyl trimethoxy silane, 0.04 to 0.08 part of dicumyl peroxide, 0.01 to 0.02 part of n-butyltin dilaurate, 50 to 60 parts of magnesium hydroxide, 60 to 65 parts of EVA and 20 to 23 parts of high-density polyethylene resin. According to the insulation material, inorganic flame-retardant filler is modified in a cross-linking manner by utilizing raw materials such as the low-density polyethylene, so that the compatibility of the flame-retardant filler and a resin base material is improved, and the fracturing is prevented; by utilizing the calcined pottery clay, the thermoplasticity polyimide and the nano hydroxyl aluminum oxalate, the insulation performance and the flame-retardant property of the insulation material can be improved, and the safety can be improved; and the insulation material can be used for a high-power household appliance wire harness and is long in service life and high in safety.

Description

technical field [0001] The invention relates to the field of cable materials, in particular to a high-insulation halogen-free flame-retardant insulating material for household appliances and a preparation method thereof. Background technique [0002] Halogen-free flame retardant of cable materials is a research hotspot in the field of flame retardant of cable materials in recent years, but due to the low flame retardant efficiency of halogen-free flame retardants and poor compatibility with the matrix, halogen-free flame retardant cable materials generally have poor mechanical properties. Problems make it difficult to popularize and apply halogen-free flame-retardant cable materials. Ethylene-vinyl acetate copolymer (EVA) is a new darling in the field of plastics for wire and cable. It has good flexibility, impact resistance, and environmental stress cracking resistance in a wide temperature range. EVA is used as a cable material matrix to It performs halogen-free flame ret...

AI Technical Summary

Problems solved by technology

[0004] At present, the cable materials on the market are not resistant to scratches, not resistant to folding, and there are white marks on the surface of the cable after folding or collision, poor aging resistance, poor water resistance, oil resistance, and wear resistance, which affect the use of home appliances. Safety and service life, need further improvement