Provided are a polymer material and a composite material with which a good texture with high resilience can be obtained even when a thermoplastic elastomer is used. A composite material includes a first member and a second member, the second member including a plate-shaped portion and a plurality of protrusions protruding from the rear surface of the plate-shaped portion, the protruding ends of the protrusions being in contact with the first member, and the second member imparting cushioning properties by elastic deformation of the second member. The plate-shaped portion and the plurality of protrusions are integrally formed using a microfoamed thermoplastic elastomer having a rebound modulus of 30-90% at 23 DEG C as measured in accordance with JIS K6255 and being solid or having a foaming ratio of 1.1 times or less, and the composite has a hysteresis loss rate of 28% or less at 23 DEG C as measured by compression and depressurization at a speed of 60 mm/min.
本发明提供一种使用热塑性弹性体也能够得到高回弹性的好触感的高分子件和复合件。一种复合件,包含第一构件和第二构件而构成,上述第二构件包含板状部及从其背面突出且突端与第一构件接触的多个突起,是通过第二构件的弹性变形而赋予缓冲性的。是利用根据JIS K6255测定的23℃的回弹弹性模量为30~90%,且为实心或发泡倍率为1.1倍以下的微发泡的热塑性弹性体来一体形成板状部与多个突起,并且,对复合件以速度60mm/分钟进行压缩和除压而测定的23℃的滞后损耗率为28%以下。
Polymer member, composite member and manufacturing method thereof
高分子件、复合件及其制造方法
2023-08-11
Patent
Electronic Resource
Chinese
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