Matte thermoplastic elastomer composition and preparation method thereof

Abstract

The invention discloses a matte thermoplastic elastomer which comprises, by weight, 20%-45% of styrene block copolymers, 30%-60% of filling oil, 5%-20% of polypropylene, 5%-12% of olefin thermoplastic elastomers, 0.5%-4% of organic matting agents, 0.1%-2% of stabilizers, 0.01%-0.05% of cross-linking agents and 0%-30% of inorganic filler. A preparation method includes: proportionally weighing raw materials, mixing the styrene block copolymers, the inorganic filler, the polypropylene, the olefin thermoplastic elastomers, the organic matting agents, antioxidants, the cross-linking agents and other auxiliaries in a high-speed mixer, and placing the mixture into a double-screw extruder for melt extrusion and extruding out prior to cooling, drying and grain cutting so that a finished product is obtained. By the method, the cross-linking agents of a proper amount and the organic matting agents of a proper amount are added into the thermoplastic elastomer, so that the prepared thermoplastic elastomer has a matting characteristic, and a visual effect is extremely soft. Intrinsic physical performances of the thermoplastic elastomer are basically kept, and the matte thermoplastic elastomer is extraordinarily excellent in processability, suitably applied to interior decoration materials of household appliances, automobiles and the like and particularly suitable for large-area injection molding products.

Description

technical field [0001] The invention relates to a matte thermoplastic elastomer composition and a preparation method thereof, belonging to the technical field of polymer modification and processing. Background technique [0002] Thermoplastic elastomer is referred to as TPE / TPR, also known as artificial rubber or synthetic rubber. Its products have the excellent properties of traditional cross-linked vulcanized rubber such as high elasticity and aging resistance at room temperature, and can be plasticized and formed at high temperature, and have the characteristics of more convenient and wide processing methods for ordinary plastics. It can be produced by injection molding, extrusion, blow molding and other processing methods. After the corners of the nozzle are crushed, 100% can be used directly for secondary use, and there is no unpleasant smell during processing. It is a new type of environmentally friendly material. It not only simplifies the processing process, but als...

AI Technical Summary

Problems solved by technology

The existing technology is generally obtained by adding matte silica or adding dynamically vulcanized elastomers. As a result, the fluidity of the material drops a lot, and the matte effect is not very good, there is no soft visual sense, and it is not suitable for molding areas. Large products, such as car floor mats

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