应变对橡胶材料导热系数的影响

Strain Effects on the Thermal Conductivity of Rubber

材料的导热系数通常极大地依赖于其微观结构。应力/应变是改变材料内部结构的一种有效手段,本文通过实验研究了天然橡胶在不同拉伸状态下的导热系数变化。搭建了基于Angstrom方法的热导率测量平台,并进行了标准样品的测试。通过对橡胶的测试,发现对于橡胶这类交联材料,虽然由于交联作用拉伸倍数受到较大的限制,但在低倍拉伸的条件下依然可以有效的提高定向的热导率。

Thermal conductivity greatly depends on its micro-structure which can be changed bytuning the stress/strain of the material.This paper experimentally studies the relation between thermal conductivity and strain of rubber band.The Angstrom method is used to measure the thermal conductivity with benchmark test of a few standard samples.We found that although the stretching rate of rubber is limited due to its cross-link construct,thermal conductivity can be still tuned in the stretched direction.