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通过不同纺丝工艺的聚丙烯腈基炭纤维表面状态、NOL环及Φ150 mm容器的实验研究,分析了不同纺丝工艺对湿法缠绕复合材料聚丙烯腈基炭纤维强度转化率的影响。结果表明,干喷湿纺炭纤维比湿法纺丝Φ150 mm容器环向纤维强度转化率要高出11.9%~15.4%,湿法纺丝的炭纤维复合材料NOL环层间剪切强度要比干喷湿纺炭纤维复合材料高7.4~34.1 MPa。因此,干喷湿纺的炭纤维可应用于固体火箭发动机缠绕壳体、压力容器等主要承受拉伸应力的领域,可充分发挥其纤维强度;而湿法纺丝工艺制成的炭纤维与树脂基体结合紧密,利于载荷的传递,可应用于承受压缩剪切等复杂载荷的领域,从而发挥这两种纤维各自不同优势。
The effects of different spinning processes on the strength conversion of polyacrylonitrile-based carbon fibers in wet-laid composites were analyzed by the surface conditions of polyacrylonitrile-based carbon fibers in different spinning processes, NOL rings and Φ150 mm containers. The results show that the dry-jet wet-spun carbon fiber is 11.9% -15.4% higher than the wet-spun Φ150 mm container, and the interfacial shear strength of wet-spun carbon fiber composite NOL ring Dry jet wet spinning carbon fiber composite high 7.4 ~ 34.1 MPa. Therefore, the dry-jet wet-spun carbon fiber can be applied to solid rocket motor winding shell, pressure vessels and other major areas to withstand tensile stress, can give full play to their fiber strength; and wet spinning process made of carbon fiber and resin The matrix is tightly bonded to facilitate the transfer of loads and can be used in areas subject to complex loads such as compression shearing, thereby exerting distinct advantages for both fibers.