摘要
采用熔融接枝技术制备含氟聚丙烯(FPP),然后将聚丙烯(PP)与FPP共混造粒制备PP/FPP共混物。用锥板流变仪分析PP和FPP的流变行为,探讨pP/FPP共混物层状形态形成的条件;用扫描电子显微镜、紫外光测试仪和万能材料试验机分析PP/FPP共混物层状形态、抗紫外光辐射性能和力学性能。结果表明,在200℃,剪切速率为125s^(-1)时,PP和FPP的流变曲线相交于一点,此条件有利于PP/FPP共混物形成层状形态。与纯PP相比,PP/ FPP共混物的力学性能和抗紫外光透过能力明显提高。
The authors synthesized fluorinated polypropylene （FPP） with melt-grafting process and then prepared a blend from PP and FPP via blending-pelletization. The rheological properties of PP and FPP were measured with cone/plate rheometer. The conditions for forming lamellar structure in the PP/FPP blend were probed. The structural morphology, resistance to ultraviolet radiation and mechanical properties of the blend were investigated with scanning electron microscope （SEM）, ultraviolet transmittance analyzer and universal material tester. The results show that the rheological curves of PP and FPP intersect at a point at shear ratio of 125 s^-1 and temperature of 200 ℃, this phenomenon favors the formation of lamellar structure of the PP/FPP blend. Compared with pure PP, the PP/FPP blend possesses higher mechanical properties and significantly improved resistance to ultraviolet radiation.
出处
《合成树脂及塑料》
CAS
北大核心
2009年第2期8-11,33,共5页
China Synthetic Resin and Plastics
关键词
聚丙烯
含氟聚丙烯
层状形态
共混物
polypropylene
fluorinated polypropylene
laminar morphology
blend
