湿法制备长碳纤维增强聚苯硫醚复合材料的性能

PROPERTIES OF LONG CARBON FIBER REINFORCED POLYPHENYLENE SULFIDE( LCF /PPS) COMPOSITES BY WET PROCESS

利用湿法浸渍工艺制备碳纤维和聚苯硫醚纤维的混合纤维坯料,经干燥、模压成型后,制得长碳纤维增强聚苯硫醚(LCF/PPS)复合板材。本文考察了水中碳纤维浓度、碳纤维含量和长度对复合板材冲击、弯曲等力学性能的影响,并通过SEM表征板材断面的形貌,分析碳纤维在树脂中的分散情况及对板材力学性能的影响。结果表明,在本实验体系中,当碳纤维在水中湿法分散的浓度为0.5g/L,长度和含量分别为9mm、45wt%时,可以得到高性能的LCF/PPS复合材料,冲击强度为49.1kJ/m2,弯曲强度和模量为178.51MPa和18.56GPa;从板材的冲击样条断面可以看到,碳纤维在树脂中的分散比较均匀,纤维与树脂的黏结性好。

Long carbon fibers and wet process. The LCF/PPS composites The influence of CF content and length PPS fibers were mixed in the stirring kettle and prepared to hybrid fibers by were prepared with the dry hybrid fibers by compression molding process. and the CF content in the dispersion kettle on notched impacted strength and flexural performances was studied. And the effects of the mechanical property and CF dispersion in the composites were studied by the SEM fracture morphology of the composites. The result shows that the best properties were obtained, where the notched izod impact strength was 49. 1kJ/m2, the flexural strength was 178.51MPa and the flexural modulus was 18.56GPa, when the CF content was 45wt%, CF length was 9mm and CF content in the dispersion kettle was 0. 5g/L. The good fiber dispersion and cohesiveness between CF and resins were observed by SEM in the cross section of the composite.