微波硫化胶与平板硫化胶比热特性的对比实验研究

Experimental study on specific heat character of plate vulcanized rubber and microwave vulcanized rubber

使用微波加热炉制备了不同种类胶料的微波硫化胶,用差式扫描量热法测得了其比热容随温度变化的曲线,与未发生硫化的生胶、平板硫化胶的比热容特性曲线进行了对比,并对3种情况下胶料的比热容随温度变化曲线进行了拟合,得到了3种情况下胶料的比热容计算公式;研究结果表明:各种胶料的生胶、平板硫化胶以及微波硫化胶的比热随温度变化的趋势基本一致,并在90℃附近出现了峰值;胶料的比热容大小不仅取决于温度,还取决于胶料的种类。

The microwave vulcanized rubbers of various kinds of rubber materials were prepared u- sing the microwave heating oven, and the curves of the specific heat changed with temperature were got, then compared the curves with that of the raw rubber and the rubber vulcanized by the curing ma- chine. Use the method of least squares to fit the curves of the specific heat changed with temperature. The following results can be got~ （1） the trends of all kinds of raw rubber,rubber cured by vulcaniza- tion machine and the microwave curing rubber are basically the same, appearing with a peak around 90 ℃; （2） the calculated equation of the specific heat of three kinds of rubber can be acquired; （3） the specific heat of the rubber material not only depends on the temperature,but also relies on the type of the rubber material.