Flame-retardant tensile-resistant insulation material for electric power engineering and preparation method thereof

Abstract

The present invention discloses a flame-retardant tensile-resistant insulation material for electric power engineering, and belongs to the technical field of insulation materials, the flame-retardant tensile-resistant insulation material for the electric power engineering comprises the following raw materials by weight: 45-55 parts of an ethylene-ethyl acrylate copolymer, 35-40 parts of an ethylene-vinyl acetate copolymer, 20-24 parts of a linear low density polyethylene, 9-13 parts of poly(ether ether ketone), 8-11 parts of glass fiber, 8-10 parts of zinc oxide, 13-15 parts of quartz powder, 3-5 parts of antimonous oxide, 14-18 parts of calcium carbonate, 2-4 parts of decabromodiphenylethane, 1-2 parts of a lubricant, 1-3 parts of a crosslinking agent, 2-4 parts of a heat stabilizer and 0.5-1.5 parts of an antioxidant. The invention also discloses a preparation method of the flame-retardant tensile-resistant insulation material for the electric power engineering; the flame-retardant tensile-resistant insulation material has the advantages of simple preparation, better tensile strength, and excellent flame retardant and high temperature resistant performance.

Description

technical field [0001] The invention relates to the technical field of insulating materials, in particular to a flame-retardant and tensile-resistant insulating material for electrical engineering and a preparation method thereof. Background technique [0002] The resistivity of insulating materials is very high, usually in the range of 10^9-10^22Ω·m. The insulating material should have good dielectric properties, that is, it has high insulation resistance and withstand voltage strength, and can avoid accidents such as leakage, creepage or breakdown; secondly, it should have good heat resistance, especially if it is not affected by long-term heating. (Thermal aging) and the performance change is the most important; in addition, it has good thermal conductivity, moisture resistance, high mechanical strength and convenient processing. [0003] The insulating materials commonly used by electricians can be divided into inorganic organic materials, organic insulating materials a...

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Problems solved by technology

(3) Mixed insulating materials: All kinds of shaped insulating materials processed from the above two materials are used as bases and casings of electrical appliances; however, the flame retardancy and tensile strength of the current insulating materials are not satisfactory

[0004] In the patent document with the publication number CN104987678A, a flame-retardant and tensile-resistant electrical engineering insulating material and its preparation method are disclosed. The flame-retardant and tensile-resistant electrical engineering insulating material includes N-methylol Acrylamide 5-10 parts, alkyd resin 3-7 parts, polyethylene naphthalate 11-18 parts, polypropylene 6-12 parts, polyketone resin 3-7 parts, poly 3-hydroxybutyrate 2-6 parts, 4-8 parts of triphenyl phosphite, 3-7 parts of tung oil, 4-10 parts of diacetyl tartrate mono-diglyceride, 6-12 parts of magnesium hydroxide, 2-5 parts of antioxidant 1076 , 3-8 parts of calcium sulfate; the preparation method of the insulating material includes the following steps: (1) put the above ingredients into a high-speed mixer, and stir in the high-speed mixer until uniform; (2) stir the step (1) The homogeneous composite material is melt-extruded and granulated with a twin-screw extruder, and after cooling, it is an insulating material for power engineering; however, the strength, flame retardancy and high temperature resistance of the insulating material can still be further improved