We propose the equation of glass transition of resin basing on experimental investigations of influence of the composition of the epoxy diane resin based composite on the glass transition temperature. It is observed experimentally by the Differential Scanning Calorimetry that the glass transition temperature of non-modified ED-20 resin increases with the hardener L-20 mass fraction. The addition of organosilicon filler PDMS-5 increases little the glass transition temperature from 80 to 85 °C. The addition of nanodispersed pyrogenic silica HDK filler significantly increases the glass transition temperature up to 116 °C. A theory describing the three athermal plateaus in the dependence of the glass transition temperature on the hardener mass fraction is formulated. The equation of glass transition sufficiently fitting the measured points of the glass transition temperature is found. The formulated equation can be useful to prediction the glass transition temperatures of polymer composites based on epoxy resins.

我们基于环氧二烷树脂基复合材料的组成对玻璃化转变温度影响的实验研究，提出了树脂的玻璃化转变方程。通过差示扫描量热法实验观察到，未改性ED-20树脂的玻璃化转变温度随着固化剂L-20质量分数的增加而升高。有机硅填料 PDMS-5 的添加几乎不会将玻璃化转变温度从 80 提高到 85 °C。添加纳米分散热解二氧化硅 HDK 填料可显着提高玻璃化转变温度，最高可达 116 °C。制定了描述玻璃化转变温度对固化剂质量分数的依赖关系的三个非热平台的理论。找到了充分拟合玻璃化转变温度测量点的玻璃化转变方程。该公式可用于预测基于环氧树脂的聚合物复合材料的玻璃化转变温度。