The effects of HDPE matrix toughness on the brittle-ductile transition of HDPE/CaCO_3blends are investigated. Not all HDPE can be toughened by CaCO_3 particles. The ability of thematrix to yield plays a fundamental ro...The effects of HDPE matrix toughness on the brittle-ductile transition of HDPE/CaCO_3blends are investigated. Not all HDPE can be toughened by CaCO_3 particles. The ability of thematrix to yield plays a fundamental role in determing whether HDPE can be toughened or not.There exists a critical matrix toughness (I_(sc)≈45J/m) below which HDPE can not be toughenedobservably by CaCO_3 particle at given average size, and above which the critical matrix ligamentthickness (τ_?) is proportional to matrix impact strength.展开更多
通过SEM观察和机械性能测试,研究了PA 6 UHMWPE HDPE g MAH共混合金的形态结构和性能。结果表明:加入HDPE g MAH可有效地改善共混物的相容性,增强两相界面间的粘结强度,降低分散相尺寸;同时还改善了共混物的机械性能,降低了熔体流动速... 通过SEM观察和机械性能测试,研究了PA 6 UHMWPE HDPE g MAH共混合金的形态结构和性能。结果表明:加入HDPE g MAH可有效地改善共混物的相容性,增强两相界面间的粘结强度,降低分散相尺寸;同时还改善了共混物的机械性能,降低了熔体流动速率,提高了常温和低温冲击强度,降低了吸水率。展开更多
基金This project is supported by the National Natural Science Foundation of China.
文摘The effects of HDPE matrix toughness on the brittle-ductile transition of HDPE/CaCO_3blends are investigated. Not all HDPE can be toughened by CaCO_3 particles. The ability of thematrix to yield plays a fundamental role in determing whether HDPE can be toughened or not.There exists a critical matrix toughness (I_(sc)≈45J/m) below which HDPE can not be toughenedobservably by CaCO_3 particle at given average size, and above which the critical matrix ligamentthickness (τ_?) is proportional to matrix impact strength.
文摘 通过SEM观察和机械性能测试,研究了PA 6 UHMWPE HDPE g MAH共混合金的形态结构和性能。结果表明:加入HDPE g MAH可有效地改善共混物的相容性,增强两相界面间的粘结强度,降低分散相尺寸;同时还改善了共混物的机械性能,降低了熔体流动速率,提高了常温和低温冲击强度,降低了吸水率。
