郭志昂,贺辛亥,张婷,王斌,梁军浩
GUO Zhi-ang,HE Xin-hai,ZHANG Ting,WANG Bin,LIANG Jun-hao

• 1:西安工程大学材料工程学院
• 2:绍兴市柯桥区西纺纺织产业创新研究院

摘要(Abstract)：

以环氧树脂为基体,短切玻璃纤维和玻璃纤维布为增强材料,通过RTM工艺制备了玻璃纤维增强环氧树脂(GF/EP)复合材料,并研究了RTM工艺制备玻璃纤维布增强环氧树脂(L-GF/EP)和短切玻璃纤维增强环氧树脂(S-GF/EP)复合材料的拉伸和弯曲性能,分析了开孔对两种复合材料拉伸性能的影响。结果表明:在拉伸过程中,开孔试样因孔边产生的应力集中,导致其拉伸强度与无孔试样相比下降了30%左右;玻纤铺层类型的不同对复合材料的力学性能具有显著影响;L-GF/EP复合材料内部结构完整,在载荷作用下,复合材料的弯曲断裂呈现一定的假塑性断裂模式,达到弯曲极限挠度值后,出现一定程度的回弹现象,其力学性能优于S-GF/EP复合材料。
The glass fiber reinforced epoxy resin(GF/EP) composites were prepared by RTM process, with epoxy resin as the matrix, chopped glass fiber and glass fiber cloth as reinforcement, respectively. The tensile and bending properties of glass fiber reinforced epoxy resin(L-GF/EP) and chopped glass fiber reinforced epoxy resin(S-GF/EP) composites were studied. The effects of open-hole on the tensile properties of the composites were investigated. The results show that the tensile strength of the sample with open-holes decreases by about 30% compared with that without holes due to the stress concentration at the hole edge.The difference in the type of glass fiber laminate has a significant effect on the mechanical properties of the composites. The internal structure of L-GF/EP composites is complete. The bending fracture of GF/EP composites exhibites a certain pseudoplastic fracture mode under the load. L-GF/EP composites show good structural integrity. After reaching the maximum value of bending deflection, rebound phenomenon occurs in L-GF/EP composites to some extent. Its mechanical properties are better than those of S-GF/EP composites.

关键词(KeyWords)： 玻璃纤维;复合材料;铺层结构;开孔;力学性能
glass fiber;composite;laminated structure;open-hole;mechanical property

Abstract:

Keywords:

基金项目(Foundation): 绍兴市柯桥区西纺纺织产业创新研究院产学研协同创新项目(19KQZD01);; 陕西省工业科技攻关项目(2016GY-014);; 中国纺织工业联合会科技指导项目(2016052,2018014);; 西安市高校人才服务企业科技项目(*GXYD7.3)

作者(Author): 郭志昂,贺辛亥,张婷,王斌,梁军浩
GUO Zhi-ang,HE Xin-hai,ZHANG Ting,WANG Bin,LIANG Jun-hao

DOI: 10.16090/j.cnki.hcxw.2020.01.012

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