玻璃纤维增强聚氯乙烯(GFRPVC)复合材料的研究

STUDY ON THE COMPOSITE OF GLASSFIBER REINFORCED POLYVINYLCHLORIDE(GFRPVC)

摘要: 本文考察了玻璃纤维增强聚氯乙烯(GFRPVC)中玻璃纤维的表面处理及加入量对力学性能的影响.并用SEM对GFRPVC的界面及其对GFRPVC力学性能的影响进行研究.结果表明:当玻纤为30wt%时,GFRPVC板的拉伸强度为110MPa,弯曲强度为190MPa,为刚性聚氯乙烯(RPVC)的两倍;拉伸模量为8.8GPa,弯曲模量为8.9GPa,是RPVC的三倍;悬臂梁缺口冲击强度达140J/m,接近RPVC的四倍;达到了一般工程塑料的性能水平.热膨胀系数下降到2.23(×10^-5)℃^-1,HDT增加到84℃.

Abstract: The effects of surface treatment and weight loading of glass-fiber on mechanical and thermal properties of fiber reinforced PVC composite (GFRPVC)were studied.The GF/PVC interface and its effect on the properties of GFRPVC were also investigated using SEM.It was found that GFRPVC composite (30wt% of G.F.) had flexure strength of 190MPa,a flexure modulus of 8.90GPa,a tensile strength of 110MPa,a tensile modulus of 8.8GPa,a notched Izod impact strength of 140J/m,a thermal expansion coefficient of 2.23 (×10^-5)℃^-1,and HDT of 84℃.Compared with 96MPa, 2.9GPa,54MPa,2.60GPa,37.6J/m,3.12(×10^-5)℃^-1,78℃ for RPVC, respectively.