摘要
研究了紫外线辐照ＨＤＰＥ与ＰＡ６共混材料的微观形态、结晶结构、熔融行为及力学性能。ＳＥＭ、ＷＡＸＤ、ＤＳＣ结果表明，随紫外线辐照时间的增加，共混物中ＰＡ６的粒径减小，与基体作用加强，ＨＤＰＥ晶面间距增大，熔点、结晶度降低，熔程变窄。力学性能测试结果表明，紫外线辐照能明显提高共混材料（ｕＨＤＰＥ／ＰＡ６：９０／１０）的拉伸强度、断裂伸长率、拉伸断裂能和冲击强度。当辐照时间超过１４４ｈ由于ＨＤＰＥ热稳定性明显降低，共混过程中ＨＤＰＥ热降解严重，共混物的韧性突降。
The morphologies,crystallizing behavior and mechanical properties of ultraviolet irradiated HDPE/PA6 blends were studied through SEM, WAXD,DSC and mechanical properties test. The results show that the particle size of PA6 in the blends is reduced and PA6 phase becomes indistinguishable with the time of ultraviolet irradiation,the d-spacing of crystal planes of HDPE in the blends are increased,the melting temperature and crystallinity are decreased.The tensile and impact strength, Young's modulus,elongation at break and tensile energy absorption of the blend (uHDPE/PA6:90/10)are enhanced quite a lot after ultraviolet irradiation. As irradiation time exceeds 144 hours, the toughness of the blends decreases abruptly because of serious degradation of HDPE in the blends during irradiating and mixing stages.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1996年第3期94-98,共5页
Polymer Materials Science & Engineering
基金
福特中国研究与发展基金
国家自然科学基金
关键词
紫外线辐照
高密度聚乙烯
尼龙-6
共混
s: ultraviolet irradiation, high density polyethylene,nylon 6
