纺丝工艺对T700级碳纤维及其复合材料性能的影响  

Effect of Spinning Process on the Properties of T700 Carbon Fibers and Its Reinforced Composites

作　　者：徐牛牛 杭传伟 张淑斌 彭飞 XU Niu-niu;HANG Chuan-wei;ZHANG Shu-bin;PENG Fei(Jiangsu Hengshen Co.,Ltd.,Danyang 212314,Jiangsu,China)

机构地区：[1]江苏恒神股份有限公司,江苏丹阳212314

出　　处：《合成纤维》2023年第5期29-33,共5页Synthetic Fiber in China

摘　　要：采用同种上浆剂对不同纺丝工艺国产T700级碳纤维进行上浆,测试分析了不同纺丝工艺碳纤维的表观性能、接触角、展纱性、毛丝量及硬挺度,并对两种纺丝工艺碳纤维制备的复合材料的力学性能进行了测试分析。结果表明:干喷湿纺碳纤维的表面光滑,截面形状基本为圆形,湿纺碳纤维的表面有沟槽,截面形状大部分为近圆形或椭圆形,少量为腰形;干喷湿纺碳纤维在耐磨性、集束性和硬挺度方面均优于湿纺碳纤维,而湿纺碳纤维的展纱性及浸润性优于干喷湿纺碳纤维;干喷湿纺碳纤维制备的复合材料的层间剪切强度比湿纺碳纤维的高12%,干喷湿纺碳纤维制备的NOL环的拉伸强度及强度转化率也高于湿纺碳纤维的。Domestic T700 carbon fibers made of different spinning processes were sized using the same siz⁃ing agent.The apparent properties,contact angle,splitting rate,fuzz content and stiffness of the carbon fi⁃bers of different spinning processes were tested and analyzed.The mechanical properties of the composite materials prepared by the carbon fibers of two spinning processes were also tested and analyzed.The results show that the surface of the carbon fibers of dry jet wet spinning process is smooth and the cross-section shape is basically circular,while the surface of the carbon fibers of wet spinning process has grooves,and the section shape is mostly nearly round or oval,and a little is waist shape.The carbon fibers of dry jet wet spinning process is superior to the carbon fibers of wet spinning process in wear resistance,bunching and stiffness,while the carbon fibers of wet spinning process is superior to the carbon fibers of dry jet wet spin⁃ning process in splitting rate and wetting property.The interlaminar shear strength of the composites pre⁃pared by the carbon fibers of dry jet wet spinning process is 12%higher than that of the carbon fibers of wet spinning process.The tensile strength and strength conversion rate of the NOL rings prepared by carbon fi⁃bers of dry jet wet spinning process are also higher than that of the carbon fibers of wet spinning process.

关 键 词：国产T700碳纤维 纺丝工艺 复合材料 性能 

分 类 号：TQ342.742[化学工程—化纤工业]