PTFE包覆连续氧化铝纤维缝纫线的磨损行为  

Wear behavior of PTFE-coated continuous alumina fiber sewing thread

作　　者：孟影 吴宁[1,2] 袁志清 张一帆[1,2] 陈利[1,2] MENG Ying;WU Ning;YUAN Zhiqing;ZHANG Yifan;CHEN Li(School of Textile Science and Engineering,Tiangong University,Tianjin 300387,China;Ministry of Education Key Laboratory of Advanced Textile Composite Materials,Institute of Composite Materials,Tiangong University,Tianjin 300387,China;Technology Center of Shijiazhuang Customs District,Shijiazhuang 050000,China)

机构地区：[1]天津工业大学纺织科学与工程学院,天津300387 [2]天津工业大学复合材料研究院先进纺织复合材料教育部重点实验室,天津300387 [3]石家庄海关技术中心,石家庄050000

出　　处：《航空材料学报》2024年第4期68-76,共9页Journal of Aeronautical Materials

基　　金：天津市海河实验室科学研究项目(22HHXCJC00007)。

摘　　要：结合上浆及二维编织技术制备部分包覆结构F-3、F-4、F-5连续氧化铝纤维缝纫线,使用自研实验装置研究包覆结构对缝纫线与针孔间磨损行为的影响。使用3D轮廓仪表征不同包覆结构缝纫线的轮廓外观和摩擦作用下的损伤形态演变;通过拉伸性能测试,表征缝纫线在不同摩擦次数下的强度保持率;通过磨断次数来评价缝纫线在不同实验参数下的磨损性能。结果表明:包覆工艺参数的变化影响缝纫线表面轮廓的起伏状态,导致磨损后断口产生的毛羽长度随着包覆纱根数的增多和编织节距的增加而增大;相比原纱和浆纱,缝纫线的耐磨性显著提高;随着摩擦次数的增加,缝纫线拉伸强度保持率均呈现快速下降后趋于平缓的趋势,当摩擦次数达到30次时,F-3、F-4、F-5缝纫线拉伸强度保持率分别为12.89%、28.82%、18.35%;随着摩擦距离、纱线张力的增加,摩擦角度的减小,缝纫线的磨断次数逐渐下降。Combined with sizing and two-dimensional knitting technology,continuous alumina fiber sewing threads with partial covering structures of F-3,F-4 and F-5 were prepared,and the effect of covering structure on the wear behavior between sewing threads and pinholes was studied by using a self-developed experimental device.The contour appearance of sewing threads with different coating structures and the damage morphology evolution under friction were characterized by 3D profilometer.Through the tensile tests,the strength retention rate of sewing thread under different rubbing times was characterized.The wear performance of sewing thread under different experimental parameters was evaluated by the number of wear breaks.The results show that the change of coating process parameters affects the fluctuation state of sewing thread surface profile,which leads to the increase of hairiness length after wear with the increase of coating yarn number and knitting pitch.Compared with the original yarn and sizing yarn,the wear resistance of sewing thread is significantly improved.With the increase of rubbing times,the strength retention rate of sewing thread shows a rapid decline and then tends to be flat.When rubbing times reach 30 times,the strength retention rates of F-3,F-4 and F-5 sewing threads are 12.89%,28.82%and 18.35%respectively.With the increases of friction distance and yarn tension and the decrease of friction angle,the number of wear-out of sewing thread decreases gradually.

关 键 词：连续氧化铝纤维 缝纫线 磨损 包覆结构 

分 类 号：V258.3[一般工业技术—材料科学与工程] TQ34341[航空宇航科学与技术—航空宇航制造工程]