Flame-retardant high impact polystyrene compound and preparation method thereof

Abstract

The invention provides a flame-retardant high impact polystyrene compound and a preparation method thereof. The flame-retardant high impact polystyrene compound comprises the following components in percentage by weight: 40 to 60 percent of high impact polystyrene, 8 to 12 percent of nano-scale kaolin, 8 to 10 percent of phenolic resin, 8 to 12 percent of bromine-nitrogen flame retardant, 5 to 10 percent of antimonous oxide, 10 to 16 percent of composite toughening agent, and 0.6 to 10 percent of antioxidant. The material performance of the prepared high impact polystyrene compound can accord with environment-friendly requirements of European Union, namely the fireproof performance 1 / 12 meets the UL94V-0 requirement; and the high impact polystyrene compound can be widely applied to the situations such as household appliances, office equipment, instruments and the like with higher requirement on the flame-retardant performance of materials, and has the advantages of simple manufacturing process, high processing efficiency, convenient material acquisition, low cost, high whiteness, and good flame-retardant property and physical property.

Description

technical field [0001] The invention relates to the technical field of modification of high-impact polystyrene, in particular to a flame-retardant high-impact polystyrene compound and a preparation method thereof. Background technique [0002] Add micron-sized polybutylene rubber particles to polystyrene (PS), and connect the two together by grafting to obtain high impact polystyrene (High Impact Polystyrene, HIPS), which overcomes the brittleness of polystyrene However, at the same time, the rigidity and toughness of the material are greatly reduced. In addition, HIPS is easy to burn, which limits its popularization and application. [0003] At present, there are many flame-retardant HIPS developed to meet the above-mentioned purposes on the market, including two series of halogen flame-retardant and halogen-free flame-retardant, mainly halogen flame-retardant. Halogen flame-retardant HIPS usually uses bromine-nitrogen flame retardants and antimony trioxide in a certain pr...

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Problems solved by technology

Halogen flame-retardant HIPS usually uses bromine-nitrogen flame retardants and antimony trioxide in a certain proportion to achieve flame-retardant effects. , if you want to maintain the impact resistance of the material, and at the same time make its fire resistance 1 / 12” meet the requirements of UL94V-0, and 1 / 10” meet the requirements of 5VA, you must add a certain amount of toughening agent while adding fire retardant. Toughening modification, the products produced in this way are not only high in cost, but also poor in physical properties, and lack of competitive advantage with similar international products

[0004] On the premise of not affecting the fire performance and environmental protection performance, adding filling talc powder and BaSO4 to HIPS can also reduce the cost of fire protection HIPS, but talc powder has a flake structure and has a great impact on the physical properties of HIPS; while BaSO4 has a large proportion, which seriously affects fire protection The specific gravity of HIPS is not an ideal filling material for HIPS

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