建筑暖通用碳纤维/聚酰胺自增强复合材料的改性研究  

Property research on composite material of carbon fiber/polyamide for general building heating

作　　者：蒋武衡 王利莉 胡周 JIANG Wuheng;WANG Lili;HU Zhou(Guangzhou Vocational University of Science and Technology,Guangzhou 510550,China)

机构地区：[1]广州科技职业技术大学,广东广州510550

出　　处：《粘接》2023年第2期57-60,共4页Adhesion

基　　金：2022广州科技职业技术大学校级科研(质量工程)项目(项目编号:2022ZR9)。

摘　　要：为开发建筑暖通用高综合性能建筑复合材料,研究了表面处理和制备工艺对碳纤维和聚酰胺自增强复合材料表面形貌、拉伸性能的影响。结果表明,经过硝酸处理和过氧化氢处理会对碳纤维表面形貌产生明显影响;而丙酮预处理后碳纤维的表面形貌与未处理时基本相同。过氧化氢处理后碳纤维的抗拉强度、断裂伸长率和弹性模量相较未处理碳纤维变化不大或略有降低;而硝酸处理后碳纤维的力学性能降低较为明显。随着压强从1 MPa增至9 MPa或热压温度从170℃增至200℃,聚酰胺自增强复合材料的抗拉强度和弹性模量先增加后减小,在压强为5 MPa、热压温度为180℃时,聚酰胺自增强复合材料取得抗拉强度和弹性模量最大值,分别为141.7 MPa和943.4 GPa。In order to develop high comprehensive performance building composites, the effects of surface treatment and preparation process on the surface morphology and tensile properties of carbon fiber and polyamide self reinforced composites were studied. The results showed that the surface morphology of carbon fiber was significantly affected by nitric acid treatment and hydrogen peroxide treatment, while the surface morphology of carbon fiber pretreated with acetone was basically the same as that without treatment. Compared with untreated carbon fibers, the tensile strength, elongation and elastic modulus of carbon fibers treated with hydrogen peroxide changed little or decreased slightly, while the mechanical properties of carbon fibers treated with nitric acid decreased significantly.As the pressure increased from 1 MPa to 9 MPa or the hot pressing temperature increased from 170 ℃ to 200 ℃,the tensile strength and elastic modulus of polyamide self reinforced composites first increased and then decreased.When the pressure was 5 MPa and the hot pressing temperature was 180 ℃,the maximum tensile strength and elastic modulus of polyamide self reinforced composites were 141.7 MPa and 943.4 GPa respectively.

关 键 词：碳纤维 复合材料 表面处理 制备工艺 力学性能 

分 类 号：TQ342.742[化学工程—化纤工业]