摘要
环氧树脂基玻璃纤维复合材料因其力学性能好、制备简单、成本低得到了广泛应用。然而,玻璃纤维复合材料与碳纤维复合材料相比存在强度和弹性模量较低的问题,在一定程度上限制了其在一些领域的应用。在环氧树脂中添加碳纤维粉,制备了碳纤维粉改性环氧树脂基玻纤复合材料,并研究了碳纤维粉尺寸及掺量对复合材料拉伸性能和弯曲性能的影响。结果表明,向环氧树脂中添加碳纤维粉能明显改善复合材料的拉伸性能和弯曲性能;随着碳纤维粉掺量的增加,材料的拉伸强度和弯曲强度均呈现先增大后减小的趋势;添加质量掺量20%的1000目碳纤维粉的玻纤复合材料的强度提升最大,与不掺碳纤维粉的玻纤复合材料相比,其拉伸强度提高67%,弯曲强度提高92%。因此,利用碳纤维粉改性环氧树脂,可以以相对较低的成本改善玻纤复合材料的力学性能,有望进一步扩展玻纤复合材料的应用。
Epoxy resin based glass fiber composites have been widely used because of their good mechanical properties,simple preparation and low cost.However,the problem of lower strength and elastic modulus of glass fiber composites compared with carbon fiber composites,to some extent,has limited their applications in some fields.In this paper,carbon fiber powders were added to epoxy resin to prepare carbon-fiber-powder modified epoxy resin based glass fiber composites,and the influence of the size and the content of the carbon fiber powders on the tensile and bending properties of the composites was studied.The results show that adding carbon fiber powders to epoxy resin could improve the tensile and bending properties of the resultant composites.With the increase in the content of carbon fiber powders,the tensile strength and bending strength of the composites showed the tendency of increasing first and then decreasing.The glass fiber composites with 20%(wt%)carbon fiber powders of the size of#1000 showed the greatest increase in both tensile strength and bending strength,and compared with the glass fiber composites without carbon fiber powders,the tensile strength and the bending strength increased by 67%and 92%,respectively.Therefore,when using carbon fiber powders to modify epoxy resin,the mechanical properties of glass fiber composites could be improved at a lower cost than replacing some glass fibers with continuous carbon fibers,and it was expected that the applications of glass fiber composites could be further extended.
作者
张颖
刘晓峰
阎述韬
李鑫
ZHANG Ying;LIU Xiaofeng;YAN Shutao;LI Xin(School of Materials Science and Engineering, Tianjin Chengjian University, Tianjin 300384, China;Tianjin Key Laboratory of Civil Structure Protection and Reinforcement, Tianjin 300384, China;School of Civil Engineering, Tianjin Chengjian University, Tianjin 300384, China)
出处
《功能材料》
EI
CAS
CSCD
北大核心
2020年第11期11103-11109,共7页
Journal of Functional Materials
基金
国家自然科学基金青年资助项目(51708390)
天津市土木建筑结构防护与加固重点实验室开放课题基金资助项目(JGSYS2017-1)。
关键词
玻纤复合材料
碳纤维粉
拉伸性能
弯曲性能
glass fiber composites
carbon fiber powder
tensile properties
bending properties
