Thermoplastic elastomer material for secondary overmolding with polyketone material and preparation method thereof

Abstract

The invention discloses a thermoplastic elastomer material for secondary overmolding with a polyketone material and a preparation method thereof. The thermoplastic elastomer material is prepared fromthe following raw materials in percentage by weight: 10-30% of SEBS, 20-40% of SBS, 15-35% of white oil, 10-30% of thermoplastic polyurethane, 5-10% of maleic anhydride grafted SEBS, 5-10% of petroleum resin, 5-10% of a mineral filler, 0.1 to 0.5% of an antioxidant and 0.1-0.5% of a lubricant. The invention also provides a preparation method of the thermoplastic elastomer material. The preparationmethod comprises the following steps: uniformly mixing the above components with above percentages by weight in a high-speed stirrer, and carrying out melt extrusion granulation by using a twin-screwextruder to obtain the thermoplastic elastomer material. The thermoplastic elastomer material has Shore hardness of 40-80 A, high tensile strength, high elongation at break which is larger than 500%,excellent temperature resistance and a thermal deformation temperature of 70 DEG C or above.

Description

technical field [0001] The invention belongs to the field of chemical industry and relates to a modified polymer material; specifically, it relates to a thermoplastic elastomer material used for secondary injection bonding with a polyketone material and a preparation method thereof. Background technique [0002] Thermoplastic elastomer, also known as thermoplastic rubber, is a new type of polymer material that has developed rapidly in recent years, and its growth rate is much higher than that of other general-purpose rubber varieties. Thermoplastic elastomers combine the properties of rubber with those of thermoplastics. It is soft at room temperature, similar to rubber, has toughness and elasticity, and is fluid at high temperature. It can be plasticized and formed with traditional thermoplastic processing equipment such as injection molding machines, extruders, and calenders. The so-called third-generation rubber after synthetic rubber, referred to as TPE and TPR. The pl...

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Problems solved by technology

[0004] The surface of products made of polyketone is often relatively hard and smooth, and it lacks texture and touch comfort in the application of some products (such as tool handles, electrical casings, etc.)

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