A high-performance thermoplastic elastomer capable of bonding nylon and its preparation method

Abstract

The invention relates to high-performance thermoplastic elastomer composition for bonding nylon and a preparation method of the high-performance thermoplastic elastomer composition, and belongs to the technical field of high polymer materials. The high-performance thermoplastic elastomer composition is prepared from, by weight, 20%-60% of hydrogenated styrene type thermoplastic elastomer, 0%-20% of polyolefin elastomer, 10%-40% of polar resin, 5%-35% of a compatilizer, 5%-20% of a tackifier, 0%-10% of mineral filler and 0.1%-1% of an anti-aging agent. The invention further discloses the preparation method of the high-performance thermoplastic elastomer composition. According to the thermoplastic elastomer, by means of reasonable compatibility of the polar resin, the compatilizer, the tackifier and the like, usage of a plasticizer component which has great influences on the mechanical properties and the bonding effect of the material is avoided, the mechanical properties of the thermoplastic elastomer and the bonding effect of the thermoplastic elastomer and nylon can be effectively improved, and the thermoplastic elastomer has the good bonding effect on different types of nylon.

Description

technical field [0001] The invention relates to a high-performance thermoplastic elastomer composition for bonding nylon and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] Nylon (PA) is widely used in daily life due to its light weight, excellent mechanical properties and weather resistance. However, nylon is relatively hard and has a smooth surface. In some applications such as toys, kitchen utensils or handles of various tools, it will give Inconveniencing the user and reducing the comfort of the user. Thermoplastic elastomer (TPE) is a polymer material between rubber and thermoplastic. Noise, anti-slip, heat insulation and comfort improvement, so it is widely used in the coating of various plastics, such as PP, ABS, PC, PA and so on. For example, Chinese patent application (publication number: CN103897321A) discloses a thermoplastic elastomer composition that can be used for coating nylon at low tempera...

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Problems solved by technology

For example, Chinese patent application (publication number: CN103897321A) discloses a thermoplastic elastomer composition that can be used for coating nylon at low temperature. The composition of the patent application contains more plasticizers and fillers, which not only increases the production cost, but also greatly reduces the mechanical properties of the thermoplastic elastomer composition, and the application range is limited.

Another example is that the Chinese patent application (publication number: CN103554819A) discloses a TPE alloy used for nylon bonding and encapsulation. Although the elastomer component has good mechanical properties, in the actual application process, due to the plasticization of the component When the injection molding encapsulation, the small molecular plasticizer quickly enters the bonding interface layer, which reduces the bonding between the TPE alloy and the nylon skeleton to a certain extent; at the same time, the TPE alloy contains thermoplastic polyurethane material, which is resistant to Poor heat resistance, and the elastomer contains nylon components, which need to be molded at a higher temperature, which will cause the degradation of thermoplastic polyurethane materials, resulting in a decrease in mechanical properties and bonding effects

[0003] At present, there are many nylon-coated TPEs on the market, but they often have a good coating and bonding effect for a small number of nylon products, and rarely can achieve a good coating and bonding effect with most nylon products.

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