Thermoplastic resin composition, preparation method and one application thereof

Abstract

The invention discloses a thermoplastic resin composition, which comprises, by weight, 30-98 parts of a styrene-based anti-impact toughening agent, 10-80 parts of a copolymer of a vinyl aromatic monomer and an alkene-based unsaturated nitrile monomer, and 0.5-20 parts of boehmite, wherein the average particle size of the boehmite is 0.01-10 [mu]m, the specific surface area of the boehmite is 3.0-150 m<2> / g, and the Ca element content of the boehmite does not exceed 1000 ppm. By controlling the Ca element content of boehmite, a large number of micropores are formed in the surface of boehmite, so that boehmite has good compatibility with rubber particles in a matrix, and by controlling the particle size and the specific surface area of boehmite, boehmite easily achieves light extinction so as to bring light extinction effect.

Description

Technical field [0001] The invention relates to the technical field of polymer materials, in particular to a thermoplastic resin composition, a preparation method thereof, and an application. Background technique [0002] Styrene-acrylonitrile copolymers such as ABS and ASA are the two most important resins in the styrene series. Compared with other resins, ABS and ASA, which are of high quality and low price, and have various excellent characteristics, have become one of the most used types of thermoplastic resins. They are widely used in the automotive industry, household appliances, automation instruments, high-speed rail ships, sports equipment, and outdoor Equipment and construction industries. ABS uses butadiene as the rubber phase, which has better impact performance; while ASA uses acrylic rubber instead of butadiene rubber, which has excellent weather resistance. Both have excellent gloss properties and can meet the needs of high-end home appliances. The gloss can be u...

AI Technical Summary

Problems solved by technology

Judging from the existing modified matting technology, inorganic matting agents are relatively seldom used in styrene-based polymers such as ABS and ASA. To achieve the desired matting degree, a large amount of inorganic filler must be added. When the filler is excessive , the interface between the filler and the resin increases, and the interface bonding strength is low, which will easily cause the deterioration of the overall mechanical properties

Non-reactive matting agents often have poor compatibility with ABS and ASA, and form a two-phase incompatible structure after adding them. At the same time, most organic matting agents are also toughening agents. When the amount added is high, it will greatly affect the mechanical properties of styrene resins. and heat resistance

For reactive matting agents, to achieve the ideal matting effect, more reactive matting agents need to be added, which may cause two-phase phase separation or a significant decrease in mechanical properties

In summary, the current four modified matting technologies have certain limitations, and more advanced technologies are still needed to further reduce the gloss of ABS and ASA systems

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