建筑用碳纤维复合材料的增强改性与性能研究  

Study on Reinforcement Modification and Properties of Carbon Fiber Composites for Building

作　　者：胡凯[1,2] 杨莹 HU Kai;YANG Ying(China University of Geosciences(Wuhan),Wuhan 430074,Hubei,China;China State Construction Third Engineering Bureau,Wuhan 430000,Hubei,China;Wuhan Institute of Technology,Wuhan 430205,Hubei,China)

机构地区：[1]中国地质大学(武汉),湖北武汉430074 [2]中国建筑第三工程局,湖北武汉430000 [3]武汉工程大学,湖北武汉430205

出　　处：《合成材料老化与应用》2023年第5期103-105,共3页Synthetic Materials Aging and Application

摘　　要：采用挤出注塑工艺制备了碳纤维复合材料,研究了氧化石墨烯(GO)含量和短切碳纤维(SCF)增强对碳纤维复合材料表面形貌、热稳定性和力学性能的影响。结果表明,不同含量氧化石墨烯处理的SCF试样表面可见断续分布、均匀分布和局部富集的氧化石墨烯。氧化石墨烯在SCF外包裹有助于抑制聚丙烯树脂结晶并提升导热性;随着GO含量升高,GO-SCF/PP复合材料的拉伸强度、弯曲强度和冲击强度先增大后减小,在GO含量为0.5%时取得最大值;PP、GO0.5-PP和GO1-PP的拉伸强度、弯曲强度和冲击强度相差不大,而GO0.5-SCF/GO0.5-PP复合材料的拉伸强度、弯曲强度和冲击强度要高于GO-SCF/PP复合材料,且具有最佳的综合力学性能。Carbon fiber composites were prepared by extrusion injection molding.The effects of the content of graphene oxide(GO)and SCF reinforcement on the surface morphology,thermal stability and mechanical properties of carbon fiber composites were studied.The results showed that the surface of SCF samples treated with diff erent GO content showed intermittent,uniform and locally enriched graphene oxide.The coating of GO on SCF helps to inhibit the crystallization of polypropylene resin and improve the thermal conductivity;With the increase of GO content,the tensile strength,fl exural strength and impact strength of GO-SCF/PP composites first increased and then decreased,and reached the maximum when the GO content was 0.5%;The tensile strength,fl exural strength and impact strength of PP,GO0.5-PP and GO1-PP have little diff erence,while the tensile strength,fl exural strength and impact strength of GO0.5-SCF/GO0.5-PP composite are higher than those of GO-SCF/PP composite,and have the best comprehensive mechanical properties.

关 键 词：建筑 碳纤维复合材料 表面改性 性能 

分 类 号：TB332[一般工业技术—材料科学与工程]