原位增容PA6／PE—HD共混物的性能研究

摘要

polyamide 6 （PA6）/high density polyethylene （PE-HD） blends were prepared via in-situ compatibilized reactive extrusion using a twin screw extruder. The reactive compatibilization of PA6/PE-HD blends as well as the effect of content changes of PE-HD on mechanical properties of PA6/PE-HD blends were studied through mechanical property test, SEM, and Molau. The experimental results showed that PE-HD-g-MAH was formed during the blending extrusion, which provided a good compatibilization on PA6/PE-HD blends.. Mechanical property and interracial morphology of PA6/PE-HD blends were improved obviously, meanwhile the water absorption decreased.%在双螺杆挤出机上通过原位增容反应挤出制备了聚酰胺6（PA6）／N密度聚乙烯（PBHD）共混物。通过力学性能测试、扫描电子显微镜观察和Molau实验，研究了PE-HD含量对PA6／PE-HD共混物的力学性能和体系增容作用的影响。结果表明，PE-HD与马来酸酐（MAH）在挤出共混过程中原位生成了PE-HD-g-MAH，其对PA6／PE-HD共混物有较好的增容作用；PAG／PE-HD共混物的力学性能与界面形态均有较大改善，吸水率有所降低。