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引言聚合物在不同温度下的结晶过程及随之而引起的晶体结构变化是纤维纺丝过程中一个重要环节,了解聚合物结晶过程和晶体结构变化的特点以及外界条件对它的影响,对生产实际具有重要意义。聚合物的热行为是随着结晶过程变化而变化的,所以结晶聚合物的结晶过程及随之引起晶体的变化是可以通过热效应的变化来表征的。用热处理方法研究聚丙烯有人做过一些工作。有如,M.Lengyel曾研究热处理聚丙烯纤维的热行为,上出健二研究热处理聚丙烯薄膜的热性质。本文着重研究在程序升温过程中插入一个恒温
Introduction The crystallization process of polymer under different temperatures and the consequent changes in the crystal structure are an important link in the fiber spinning process. Understanding the characteristics of polymer crystallization process and crystal structure changes and the influence of external conditions on it, Practical significance. The thermal behavior of a polymer varies with the crystallization process, so the crystallization process of the crystalline polymer and the consequent changes in the crystallinity can be characterized by changes in the thermal effect. Some people have done some research on polypropylene using heat treatment. For example, M. Lengyel studied the thermal behavior of heat-treated polypropylene fibers and published a second study on the thermal properties of heat-treated polypropylene films. This article focuses on the insertion of a constant temperature during the warming process