Unsaturated polyester molding compound

Abstract

The present invention relates to an unsaturated polyester molding compound, particularly to an unsaturated polyester molding compound adopted as a double insulation material for an electric tool. The unsaturated polyester molding compound comprises, by weight, 45-55 parts of an isophthalic-neopentyl glycol type unsaturated polyester resin, 20-30 parts of a maleic anhydride resin, 10-30 parts of quartz sand, 200-240 parts of heavy calcium carbonate, 100-120 parts of aluminium hydroxide, 50-60 parts of glass fiber, 5-10 parts of a toughening resin, 2-2.5 parts of a high temperature free radical polymerization initiator, 0.1-0.3 part of a low temperature free radical polymerization initiator, 0.1-0.3 part of a polymerization inhibitor, 25-30 parts of a low profile agent, 3-6 parts of a low shrinkage agent, and 1-2 parts of styrene. The unsaturated polyester molding compound has the following advantages that: formability of the unsaturated resin is adopted, the functional filler and the special additive are matched, and the glass fiber is added to reinforce, such that the novel special functionality composite material relying on excellent forming ability of the unsaturated resin is achieved; and the chemical structure of the product is a cross-linking network structure, and the heat distortion temperature of the product is 273 DEG C and is about 25 DEG C higher than the heat distortion temperature of the conventional material, such that the product can achieve excellent thermal strength property when being used for high power electric mallets, electric breakers and the like, wherein the previous material does not have the excellent thermal strength property.

Description

technical field [0001] The invention relates to an unsaturated polyester molding compound, in particular to an unsaturated polyester molding compound used as a double insulating material on electric tools. Background technique [0002] The double insulation process is the key technology of electric tools, and the rotor shaft insulation technology is one of the important processes in the manufacture of electric tools. It plays a decisive role in ensuring personal safety for hand-held double-insulated electric tools. In terms of material selection for double insulation of electric tools, on the premise of ensuring the cost, first of all, the material needs to have good formability, and must also have the following characteristics: [0003] High withstand voltage, making it difficult for electrical breakdown; [0004] High heat resistance, so that it has sufficient thermal strength at high temperatures to avoid thermal deformation during equipment operation; [0005] High st...

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Problems solved by technology

[0007] The purpose of the embodiments of the present invention is to solve the problem of unsatisfactory heat resistance and strength of double insulating materials in the prior art, and propose a new type of unsaturated polyester molding compound, a new type of double insulating material based on unsaturated resin, dedicated For the motor rotor, it solves the problem of low heat resistance of traditional materials, improves the heat distortion temperature, increases the torque, and has good insulation performance

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