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2 年
DSC测试PVC样品的塑化度
此后,通过螺杆的挤压、剪切,外层分子开始运动,内层分子便被裸露出来。新的能量又促进了裸露微粒再次膨胀,再次挤压、剪切,从而使PVC塑料分子得以充分运动,发生塑化。这时,稳定剂和润滑剂等其它助剂,也被均匀地分布在PVC塑料的每个相中 ...
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