Abstract—

The thermomechanical properties of high-density polyethylene samples (Т_mlt = 142°С) subjected to plastic deformation under a pressure of 0.5–1.0–2.0 GPa at room temperature have been investigated on an anvil-type high-pressure apparatus. The decrease in the thickness of deformed samples upon heating depends on the processing pressure and the state of the compressive anvils, namely, grounded or insulated. UV irradiation and storage of the samples at room temperature reduced the effect caused by deformation. The established effects have been associated with a significant influence of charges trapped by structural defects formed during plastic deformation of the polymer on the thermomechanical properties of deformed samples.

中文翻译：

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高密度聚乙烯在高压下塑性变形后的热力学研究

摘要-

已经在砧型高压装置上研究了在室温下在 0.5-1.0-2.0 GPa 压力下发生塑性变形的高密度聚乙烯样品 ( Т _mlt = 142°С)的热机械性能。加热变形样品厚度的减少取决于加工压力和压砧的状态，即接地或绝缘。样品在室温下的紫外线照射和储存减少了变形引起的影响。已确定的效应与聚合物塑性变形过程中形成的结构缺陷所捕获的电荷对变形样品的热机械性能的显着影响有关。