摘要
针对目前航天领域对高性能纤维编织绳的应用需求,以聚芳酯(Vectran^(■))纤维为原料,设计并制备了两种线密度的高承载编织绳,测试分析了花节长度、拉伸速度和预加载水平对聚芳酯纤维中空编织圆绳拉伸性能的影响。结果表明:花节长度增大,编织绳的比强度增大,拉伸断裂伸长率减小;在同一花节长度下,2合股编织绳的比强度明显高于3合股编织绳,而伸长率略低;拉伸速度对相同线密度编织绳的比强度影响较小,但伸长率随拉伸速度的增大而减小,与拉伸速度25 mm/min相比,在100 mm/min时,两种编织绳伸长率均降低约30%;预加载可以有效提高编织绳的拉伸性能,两种线密度编织绳的比强度最大分别提高了11.7%和12.1%。
In order to meet the demand of high-performance fiber braided ropes for aerospace,two kinds of linear density of high-load braided ropes are designed and fabricated by using polyarylate fiber.Then,the effects of braided pitch,drawing speed and preloading level on the tensile properties of polyarylate fiber hollow braided ropes are studied.The results show that with the increasing braided pitch of the rope,the tensile strength increases and the elongation decreases.Besides,the tensile strength of the 2-ply rope is obviously higher than that of the 3-ply rope,but the elongation is lower than the 3-ply at the same braided pitch.For braided ropes of the same linear density,the drawing speed has little influence on the strength of the braided rope,but the elongation gradually decreases with the increase of the speed.Compared with the tensile speed of 25 mm/min,the elongation of the two braided ropes decreases by about 30%at 100 mm/min.Preloading could effectively improve the tensile strength of braided ropes.Compared with no preloading,the tensile strength of the two ropes can increase by 11.7%and 12.1%respectively,at the maximum strength.
作者
董春晖
徐青华
孙颖
丁许
郭梦惟
陈利
DONG Chunhui;XU Qinghua;SUN Ying;DING Xu;GUO Mengwei;CHEN Li(School of Textile Science and Engineering,Tiangong University,Tianjin 300387,China;Key Laboratory of Advanced Textile Composites,Ministry of Education,Tiangong University,Tianjin 300387,China;Beijing Institute of Spacecraft System Engineering,Beijing 100094,China)
出处
《上海纺织科技》
北大核心
2022年第3期15-18,共4页
Shanghai Textile Science & Technology
关键词
聚芳酯纤维
编织绳
拉伸性能
预加载
polyarylate fiber
braided rope
tensile property
preloading
作者简介
董春晖(1998-),女,在读硕士研究生,主要研究方向为编织材料及其复合材料;通信作者:孙颖。E-mail:sunying@tiangong.edu.cn。
