Analysis of several adhesive characteristics of TPE/TPR materials

  • Time of issue:2021-11-02
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Analysis of several adhesive characteristics of TPE/TPR materials

Thermoplastic elastomer (English for Thermoplastic Elastomer) is an environmentally friendly low-carbon composite material with the characteristics of rubber (high elasticity, compression permanent deformation, etc.) and the processing characteristics of plastic (simple process). (Popularly spoken: thermoplastic elastomer is a rubber with high elasticity, high resilience, but also has the characteristics of injection molding processing, with environmental protection, non-toxic safety, a wide range of hardness, excellent coloring, soft to the touch, weather resistance, fatigue resistance and temperature resistance, superior processing performance, no vulcanization, can be recycled to reduce costs, both secondary injection molding, and PP, PE, PC, PS, ABS (ABS and other substrate materials wrapped bonding, but also can be formed alone.

  1.TPE material self-adhesive; refers to the TPE material surface has a strong adhesive, similar to the surface coated with glue. This has a strong self-adhesive TPE material can be used to paste everyday items to prevent touching fall or overturn. Similar TPE material, a foreign TPE manufacturer has a special research and development, and applied for a patent. In fact, in the conventional TPE blending system, adding a good compatibility with the main blending system of viscosity enhances the adhesion of the TPE material surface. This kind of adhesion is positive, which is what the user demands and hopes for.

  2. Adhesion on the surface of soft TPE materials. Some low hardness TPE materials, due to the oil component content in the mix, resulting in a sticky feeling on the surface of soft TPE materials. This sticky feeling is caused by the oil in the formulation. Usually TPE (TPR) based on SBS base is more prone to surface sticky hand problem, this kind of stickiness is negative and is what users want to eliminate.

  3. Stickiness during overmolding. Adhesion here, refers to the TPE and the wrapped substrate (plastic) due to the close solubility sp or good compatibility, injection molding at high temperatures, the bonding of the two materials in the bonding surface of the fusion bonding effect. The good or bad adhesion mainly depends on the surface affinity of TPE and the covered plastic (similar melting point, close polarity and surface tension, etc.)
 

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