摘要
本文研究了高密度聚乙烯(HDPE)/EPDM磺酸锌盐(Zn-SEPDM)共混物的机械性能、流变行为、形态和相容性。结果表明:加入Zn-SEPDM可使HDPE的熔点和结晶度降低,熔程变窄。当Zn-SEPDM含量超过20％,共混物中Zn-SEPDM呈连续相,冲击强度突增。
The compatibility of zinc-neutralized sulfonated EPDM(Zn-SEPDM) and its effect on crystallizing behavior of high density polyethylene (HOPE) as well as the morphology of the blend were studied via WAXD, DSC, TEM, SEM, a capillary rheometer and mechanical property tests. The results show that the addition of Zn-SEPDM makes both the melting point and the crystallizing temperature of HOPE decrease. As Zn-SEPDM content exceeded 20%, Zn-SEPDM in the blend became a continuous phase and an abrupt change in impact strength occurred therefrom. Owing to the incorporation of ionic groups into EPDM, the strong interactions between the chains make the impact strength of HDPE incredibly increased without sacrificing its tensile strength so much.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1992年第2期274-277,共4页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
关键词
高密度
聚乙烯
EPDM
磺酸锌盐
High density polyethylene, Zinc-neutralized sulfonate EPDM, Physical cross-linking
