Thermosetting resin material for automotive relay shell and preparing method of thermosetting resin material

Abstract

The invention discloses a thermosetting resin material for an automotive relay shell. The thermosetting resin material is characterized in by comprising the following raw materials including, by weight, 100-130 parts of epoxy resin E40, 10-12 parts of methylhexahydrophthalic anhydride, 3-4 parts of trimellitate, 2-3 parts of PTMG, 10-12 parts of zirconium carbonate, 0.7-1 part of ethoxylated alkyl phenol ammonium sulfate, 0.1-0.2 part of hexamethyl cyclotrisiloxane, 6-9 parts of maleic anhydride, 0.1-0.5 part of dicumyl peroxide, 17-20 parts of 3-(trifluoromethyl) benzophenone, 2-3 parts of hydroquinone, 0.1-0.4 part of 2-thiol group truxene imidazole and 3-4 parts of straw powder. The resin material has very good toughness and impact resistance, and is high in surface intensity, waterproof, good in corrosion resistance, high in protectiveness on a relay and good in insulation stability; and according to the thermosetting resin material, an acid anhydride grafting reaction is adopted, so that the dispersibility of fillers between the resin is effectively improved, and the comprehensive performance of the finished product material is improved.

Description

technical field [0001] The invention relates to the technical field of resin materials, in particular to a thermosetting resin material for an automobile relay casing and a preparation method thereof. Background technique [0002] After curing, the thermosetting resin forms a network structure due to intermolecular crosslinking, so it has high rigidity, high hardness, high temperature resistance, non-flammability, and good dimensional stability of the product, but it is brittle. Therefore, before molding most thermosetting resins into products, various reinforcing materials, such as wood powder, mineral powder, fibers or textiles, are added to strengthen them to make reinforced plastics. In the thermosetting resin, adding reinforcing materials and other additives, such as curing agent, colorant, lubricant, etc., can be made into thermosetting plastics, some are powdery, granular, and some are made into lumps and flakes, collectively referred to as molding compounds. . Comm...

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Problems solved by technology

Such as electromagnets, contactor coils, transformers, dry-type transformers and other high-voltage and low-voltage electrical appliances, the manufacture of integrally sealed insulating packages has developed rapidly in the electrical industry. However, epoxy materials traditionally used for electrical insulation, Poor corrosion resistance and low impact strength, so in order to continuously improve the protection of electronic appliances, it is necessary to study higher performance epoxy materials