Unsaturated polyester resin composition thickened by non-alkali metal systems and bulk molding compound with unsaturated polyester resin composition

Abstract

The invention discloses an unsaturated polyester resin composition thickened by non-alkali metal systems and a bulk molding compound with the unsaturated polyester resin composition. By the aid of the unsaturated polyester resin composition and the bulk molding compound, the problem of easiness in solid-liquid phase separation when existing molding compounds are heated and stressed and flow mainly can be solved. A plurality of types of unsaturated polyester resin are matched with one another to form a body of the composition. The unsaturated polyester resin composition is characterized by comprising the modified unsaturated polyester resin. The unsaturated polyester resin composition and the bulk molding compound have the advantages that the stability of the molding compound can be effectively improved owing to special effects of the modified unsaturated polyester resin and particle sizes and proportions of preferable inorganic fillers, the unsaturated polyester resin composition is not thickened by the traditional alkali metal systems, accordingly, pre-mixing and follow-up curing viscosity control procedures and the like and expensive viscosity reducers and impregnating compounds can be omitted, and energy consumption of production equipment can be reduced; the bulk molding compound can be manufactured by the aid of a compression molding technology, a transfer molding technology and an injection molding technology, and a manufactured molded product is excellent in thin-walled appearance and mechanical strength as compared with an equivalent product thickened by alkali metal systems.

Description

technical field [0001] The invention relates to the technical field of thermosetting glass fiber reinforced composite materials in polymer materials, in particular to an unsaturated polyester resin composition thickened by a non-alkali metal system and a bulk molding compound thereof. Background technique [0002] With the rapid development of technology in the domestic electrical industry, the shortcomings of traditional materials such as bakelite and ceramics, which were widely used in circuit breaker casings, are increasingly emerging. For example, the mechanical strength, electrical resistance, and dimensional stability of the former cannot meet the continuous Increased product requirements; while the latter has stable chemical properties, but it has hard, brittle, brittle and other difficult problems to solve. Therefore, both of them are gradually replaced by a new generation of thermosetting plastics-bulk molding compound, which is a kind of prepreg mainly composed of ...

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Problems solved by technology

[0010] The object of the present invention is to provide a non-alkali metal system thickened unsaturated polyester composition, bulk molding compound and its Preparation

At the same time, it also solves a series of problems such as high production management costs, long production cycles, and complicated quality control caused by the thickening of traditional bulk molding compounds with alkali metal systems.

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