乳胶基质数学微观模型导热分析

乳胶基质是一种介于固体和液体之间的特殊黏弹流体,具有黏度高、导热系数低等特点。本文首次对乳胶基质导热进行电镜扫描及微观数学模型分析,发现在它的内部有一定量的空穴存在,在有温度梯度的情况下,其导热主要依靠分子振动,由于高分子化合物交联分子链的束缚作用,其振动的幅度很小,这是乳胶基质不易传热的内在原因,而且振动频率和温度有关,温度高时振动频率大,导热系数增加使热传递能提高,而当温度持续下降时,分子的振动频率也随之下降,而当温度下降到某个区间,分子的振动频率很小,即使温度继续下降其振动频率改变很小甚至不再改变。

MICRO MATHEMATICL MODEL ANALYSIS OF EMULSION EXPLOSIVE MATRIX CONDUCTIVE

Emulsion explosives matrix(EEM) is a special viscoelastic body lies between solids and liquids,it is high viscosity and low thermal conductivity,etc.In this paper we first analysis the conductivity mathematical model of micro EEM,and found some holes was in its inner and its conduction depend on the molecules vibration when temperature gradient existed.And the vibration frequency of molecules decreased as the temperature declined,when the temperature declined to below a range,the vibration frequency of mole...