含镍铬合金丝纬编电热层复合材料的拉伸性能  

Tensile property of composites with Ni-Cr alloy wire weft knitted electrothermal layer

作　　者：孙颖[1,2] 冯亚 刘梁森[2] 崔艳超[3] 陈利[1,2] SUN Ying;FENG Ya;LIU Liangsen;CUI Yanchao;CHEN Li(School of Textile Science and Engineering,Tiangong University,Tianjin 300387,China;Key Laboratory of Advanced Textile Composites of Ministry of Education,Tiangong University,Tianjin300387,China;Tianjin Aviation Electrome-chanical Co.,Ltd.,Tianjin 300308,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]天津工业大学先进纺织复合材料教育部重点实验室,天津300387 [3]天津航空机电有限公司,天津300308

出　　处：《天津工业大学学报》2024年第3期16-22,共7页Journal of Tiangong University

基　　金：天津市自然科学基金资助项目(19JCYBJC18300)。

摘　　要：为开发一种航空飞行器防冰用电热复合材料,选取3种细度的镍铬合金丝,基于平针、罗纹和双罗纹3种纬编结构,优选了6种镍铬合金丝纬编电加热织物,以镍铬合金丝纬编织物为电热层,制备玻璃/环氧电热复合材料,并采用实验方法研究了镍铬合金丝细度和纬编结构对电加热织物及其复合材料的电热性能和对复合材料拉伸性能的影响。结果表明:同种纬编结构,镍铬合金丝细度较大,织物电热转换效率较低,电加热织物及其复合材料表面最高平衡温度较高,电热复合材料拉伸强度较小;同种镍铬合金丝细度,在11 V直流电压30 s下,平针组织电加热织物为电热层的复合材料表面温度由室温升高到74.1℃,升温速率达1.63℃/s,较罗纹和双罗纹组织升温速率分别高154.69%和33.61%;平针组织电加热织物为电热层的复合材料的拉伸强度为450.2 MPa,较罗纹和双罗纹组织拉伸强度分别高3.68%和4.53%。初步工作表明,含镍铬合金丝纬编电热层复合材料有望满足航空飞行器防冰用电热复合材料的需求。In order to develop a kind of electrothermal composites which can be used for aircraft anti ice,six kinds of electric heating fabrics made of nickel chromium alloy wire were preferred and prepared based on three kinds of weft knitted structures:plain,rib and interlock.The glass/epoxy electrothermal composite was prepared using Ni-Cr alloy wire weft knitted as the electrothermal layer.The effects of the fineness of Ni Cr alloy wire and weft knitted structure on the electrothermal properties and tensile properties of electric heating fabrics and electrothermal composites were studied by experiments.The results show that with the same weft knitted structure,the fineness of Ni Cr alloy wire is larger,the electrothermal conversion efficiency of the fabric is lower,the maximum equilibrium temperature of the surface of the electric heating fabric and its composite is higher,and the tensile strength of the electrothermal composite is lower.With the same fineness of Ni-Cr alloy wire,the surface of the composite with plain structure increased from room temperature to 74.1℃at 11 VDC for 30 s,and the heating rate reached 1.63℃/s,which was 154.69%and 33.61%higher than that of the composite with rib and interlock structure,respectively;the tensile strength of plain structure composite is 450.2 MPa,which is 3.68%and 4.53%higher than that of rib and interlock structure composite respectively.The preliminary work shows that composites with Ni-Cr alloy wire weft knitted electrothermal layer is expected to meet the needs of the electrothermal composite for aircraft anti icing.

关 键 词：复合材料 纬编结构 镍铬合金丝 电热性能 拉伸性能 防冰 

分 类 号：TS186.2[轻工技术与工程—纺织材料与纺织品设计] TB332[轻工技术与工程—纺织科学与工程]