高压物理学报2024，Vol.38Issue(3)：90-102,13.DOI:10.11858/gywlxb.20230787
聚合物在冲击荷载下的物性及"相变"实验研究进展
Experimental Research Progress on Physical Properties and"Phase Transition"of Polymers under Impact Loading
摘要
Abstract
Polymers are widely used in various fields of national defense and national economy.They are inevitably exposed to extreme conditions of high temperature and high pressure during applying.Thus,it is necessary to study their physical properties and"phase transition"under impact loading.Because of their characteristic molecular chain structure,polymers show different properties from most materials such as metals.The intercept extrapolated from Hugoniot curve at low pressure is obviously higher than their body sound velocity at atmospheric pressure.The wave profile at low pressure presents a structure with an arc shape.At 20-30 GPa,the Hugoniot line turns obviously,indicating that the material has undergone a"phase transition"under impact loading.The"phase transition"is explained as chemical decomposition or lattice structure transformation,and the kinetics of"phase transition"is studied.In addition,the modeling method of equation of state based on chemical decomposition is briefly introduced.Finally,the prospect is put forward according to the doubtful points in the study of physical properties and"phase transition"of polymers under impact loading.关键词
聚合物/雨贡纽/状态方程/化学分解/晶格结构转变Key words
polymer/Hugoniot/equation of state/chemical decomposition/lattice structure transformation分类
数理科学引用本文复制引用
叶世佳,郝龙,王玉锋,李守瑞,耿华运,李俊..聚合物在冲击荷载下的物性及"相变"实验研究进展[J].高压物理学报,2024,38(3):90-102,13.基金项目
国家自然科学基金(12274381) （12274381）
冲击波物理与爆轰物理全国重点实验室基金(2022JCJQLB05705,2022JCJQLB05708) （2022JCJQLB05705,2022JCJQLB05708）
