摘要
研究了同向双螺杆造粒机组的螺杆转速对GF增强聚丙烯(PP/GF)复合材料中GF含量、长度以及复合材料力学性能的影响。结果表明,随着螺杆转速的提高,复合材料中GF的含量不断增加,最多增加了48.2%,而其长度却逐渐变短;复合材料的拉伸强度、弯曲强度、耐热性、硬度等性能也随着螺杆转速的增加而提高,冲击强度却逐渐下降;随着马来酸酐官能化聚丙烯的引入,GF的含量提高了1.8%,纤维长度显著增加且明显改善了复合材料的各项力学性能,其中拉伸强度提高了95.1%,弯曲强度提高了90.1%,无缺口冲击强度提高了110.4%,缺口冲击强度提高了50%。
Polypropylene （PP）/glass fiber（GF）composites were prepared by a co rotating twinscrew extruder,and the effect of screw rotation on GF in the composites and the properties of composites was investigated.The results indicated that the content of GF increased with an increase of rotation speed and achieved a maximum value of 48.2 %.However,the fiber length tended to decrease gradually with increasing rotation speed.The tensile strength,bending strength,heat-resistant temperature and hardness of the composites were improved with the increase of rotation speed,but the impact strength showed a slow decline.The incorporation of maleic anhydride-grafted PP improved the fiber length significantly,and meanwhile,the GF content,tensile strength,bending strength,notched and no-notched impact strength increased 1.8 %,95.1 %,90.1%,50 % and 110.4 %,respectively.
出处
《中国塑料》
CSCD
北大核心
2017年第5期36-41,共6页
China Plastics
基金
重庆市基础与前沿研究计划项目(CSTC:2015jcyja50027)
国家国际科技合作专项项目(2015DFA51330)
制造装备机构设计与控制重庆市重点实验室开放基金(1456032)
关键词
螺杆转速
马来酸酐官能化聚丙烯
GF增强聚丙烯复合材料
GF
screw rotation
maleic anhydride-grafted polypropylene
polypropylene/glass fiber composite
glass fiber
