Research progress on environmental stress cracking resistance of high-density polyethylene
Environmental stress cracking resistance(ESCR)is an important index to evaluate the comprehensive performance of high-density polyethylene(HDPE).In this paper,the formation mechanism of HDPE subjected to environmental stress cracking(ESC)was introduced,and the influencing factors of ESCR were analyzed,including the molecular chain structure,condensed state structure,forming and using environment of HDPE.Based on the analysis results,we reviewed the methods of improving the entanglement density of tied molecules and refining grain size by improving raw material quality,physical blending modification,chemical crosslinking modification and forming process optimization in recent years,so as to improve the ESCR properties of HDPE products.
NETL
NSTL
万方数据
