A kind of memory nylon rubber-plastic material and preparation method thereof

Abstract

The invention discloses a memory nylon rubber and plastic material. The memory nylon rubber and plastic material is prepared from the following components in percentage by mass: modified nylon, maleic anhydride grafted copolymer and auxiliaries, wherein the modified nylon is prepared from the following components in percentage by mass: 35-42% of caprolactam, 5-25% of vinyl-terminated phenyl silicone oil, 0.1-0.5% of initiating agent, 1-10% of aromatic diacid, 15-40% of polyether, 0.1-1.1% of catalyst, 1-10% of chain extender and 0.5-1.5% of antioxidant. The invention also discloses a preparation method of the memory nylon rubber and plastic material. The memory nylon rubber and plastic material has the advantages that vinyl-terminated phenyl silicone oil is adopted for modifying a hard segment of polyamide of nylon, so that low temperature toughness, oxidation resistance, weather resistance, heat resistance and fire resistance of the nylon are enhanced; maleic anhydride grafted polymer is used for toughening the modified nylon, thus obtaining the nylon rubber and plastic material with the characteristics of plastic and rubber, shape resilience effect and general mechanical performance are improved, the problems of common nylon or a plastic and rubber material, such as poor elasticity and poor shape resilience are solved, and memory performance of an earphone cable product and the like is enhanced.

Description

technical field [0001] The invention relates to the technical field of plastic materials, in particular to memory nylon rubber and plastic materials for earphone cables and a preparation method thereof. Background technique [0002] Shape memory materials have the commonality of plastic and rubber at the same time. They have the properties of plastic in the normal temperature range, that is, rigidity and shape stability. At the same time, they have the properties of rubber at a certain temperature (the so-called memory temperature), which is mainly manifested in the deformability of the material. Sex and shape recovery, that is, the memory function of the material, that is, the cycle of "memorizing the initial state——fixed deformation——recovering the initial state". Generally, the mechanical properties of polymer materials will change significantly near their glass transition temperature (Tg). Below Tg, it is rigid and brittle; above Tg, it is elastic and flexible. Althoug...

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Problems solved by technology

[0003] Earphone products such as wires are mostly made of plastic materials, which are not enough in folding resistance and elasticity, and are not resistant to aging. After long-term use, they will become hard and difficult to return to shape, and the product has insufficient elasticity and softness.

Nylon material has high mechanical strength, good electrical insulation, self-lubricating, non-toxic, self-extinguishing properties, etc., but poor dimensional stability, poor low-temperature toughness, insufficient heat resistance and toughness, etc. There are not many applications of sex

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