Ultra-low gloss, ultra-low temperature resistant asa resin composition and preparation method thereof

Abstract

The invention provides an ultra-low gloss, ultra-low temperature resistant ASA resin composition and a preparation method thereof. The composition comprises the following components in parts by weight: 20-60 parts of acrylonitrile-styrene-acrylate graft copolymer, 40-80 parts of acrylonitrile-styrene copolymer, 1-20 parts of ultra-low gloss and low-temperature resistance modifier, and 0.1-5 parts of processing aid; the ultra-low gloss and low-temperature resistance modifier includes the following components: carrier copolymerization Products, fluorine-containing copolymers, low-temperature toughening agents, coupling agents, fumed silica, additives. The ASA resin composition prepared by the present invention has extremely low gloss, and can try to replace mold treatment processes such as skin texture and texture, which greatly saves mold costs and processing and production costs. At the same time, it has excellent low temperature resistance and can be used very It is widely used in some occasions that require low temperature resistance and low gloss, such as auto parts, outdoor profiles, building materials and electrical appliances.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to an ultra-low gloss and ultra-low temperature resistant ASA resin composition and a preparation method thereof. Background technique [0002] Acrylonitrile-styrene-acrylate graft copolymer (ASA) is a weather-resistant engineering plastic, which is similar in structure to acrylonitrile-butadiene-styrene graft copolymer (ABS), and retains ABS as Excellent mechanical and physical properties of engineering plastics. The commonly used ASA resin replaces butadiene rubber by introducing butyl acrylate rubber containing double bonds, so that only light with a wavelength of less than 300nm will have an aging effect on it, so the weather resistance has been substantially improved, compared with ABS It is about 10 times higher, and is widely used in building materials, automotive exterior parts, electronic and electrical engineering exterior parts, outdoor products, sports equipment and oth...

AI Technical Summary

Problems solved by technology

Patent WO 2003 / 027181 A2 discloses a method for preparing low-gloss ASA. The resin shown is prepared by adding a matting agent containing epoxy functional groups and amine functional groups in the molecular chain to the formula. The amount of matting agent added At 0.5-15%, preferably 3-12%, more preferably 5-10%, the glossiness of the ASA resin is mainly reduced by the reaction crosslinking of the epoxy functional group and the amine functional group; although the glossiness of the resin prepared by this method is obviously reduced , however, mechanical properties such as impact strength, tensile strength, flexural strength, and flexural modulus are also reduced in varying degrees

Patent CN102617973 adopts the above-mentioned scheme to achieve the purpose of increasing the melt strength of ABS resin by realizing cross-linking; but its reaction efficiency is often relatively low, and the cross-linking reaction often makes the melt strip at the die of the extruder appear obvious Melt swelling phenomenon, which makes subsequent pelletizing and dispersion in resin difficult

[0013] However, the above method of reducing the surface gloss of the material will often further reduce the room temperature and low temperature impact properties of the ASA resin, resulting in a further decline in the toughness of the material, which directly affects the normal use of the product.

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