含镍铬合金丝纬编电加热层复合材料的层间剪切性能  

Interlaminar shear properties of composites with Ni-Cr alloy weft knitted electric heating layer

作　　者：冯亚 孙颖[1,2] 崔艳超[3] 刘梁森[2] 张宏亮 胡俊军 居傲 陈利[1,2] FENG Ya;SUN Ying;CUI Yanchao;LIU Liangsen;ZHANG Hongliang;HU Junjun;JU Ao;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;Tianjin Aviation Electromechanical 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：《纺织学报》2024年第4期89-95,共7页Journal of Textile Research

摘　　要：为开发既具有电加热功能特性又满足承载结构基本力学性能要求的玻璃纤维/环氧层合复合材料,选取3种直径的镍铬合金丝,设计制备了平针、罗纹和双罗纹3种组织结构的纬编电加热织物,以镍铬合金丝纬编织物作为中间电加热层,优选热压罐复合成型工艺,制备了玻璃纤维/环氧层合复合材料。利用红外热像仪和万能试验机分别测试了复合材料的电加热性能和层间剪切性能。结果表明:在8 V直流电压下,6种复合材料均能升温到37℃以上,最高可达72℃,耗时30 s;最高平衡温度与镍铬合金丝直径成正相关,平针组织复合材料最高平衡温度最高,双罗纹组织复合材料表面温度均匀性最好;含镍铬合金丝纬编电加热层的玻璃纤维/环氧层合复合材料层间剪切强度相较于不含电加热层复合材料层间剪切强度保留率为74.1%~97.4%。初步研究工作表明,含镍铬合金丝纬编电加热层复合材料可同时实现玻璃纤维/环氧层合复合材料功能与结构的兼顾,有望满足直升机发动机进气道防/除冰系统的设计需求。Objective In order to ensure the helicopter can operate safely in all weather,especially at low temperature,the engine inlet anti-icing protection is necessary.Therefore,it is of great significance to develop electrothermal composites that can not only meet the requirements of lightweight helicopter inlet structure,but also realize the heating function.Due to the structural complexity of the multi curvature of the helicopter inlet,a glass filer/epoxy laminated composite with integrated structure and function is developed based on the weft knitted fabric with excellent formability performance.Method Three kinds of nickel chromium alloy wires of different fineness are selected to design and prepare 9 kinds of fabrics with three kinds of weave structures:plain,rib and interlock.Based on the principle of minimum thickness,six kinds of weft knitted electrically heated fabrics were selected.The glass filer/epoxy laminated composite was prepared by using nickel chromium alloy weft knitted fabric as the intermediate electric heating layer and the autoclave composite molding process was preferred.The electrothermal properties and interlaminar shear properties of the composites were tested by infrared thermography and universal testing machine.Results The results showed that under 8 V direct current(DC)voltage,the temperature of the six kinds of electrothermal composites can rise above 37℃,up to 72℃,taking 30 s,and the heating rate can reach 1.58℃/s.The composites showed that the maximum equilibrium temperature is positively related to the fineness of Ni-Cr alloy wire.Under 8 V DC voltage,the maximum equilibrium temperature of plain composite samples with nickel chromium alloy wire fineness of 0.08 mm,0.06 mm and 0.04 mm in 30 s is 72.8℃,67.1℃ and 49.0℃respectively.Compared with rib and interlock,the maximum equilibrium temperature of plain structure composite is the highest.Based on the fineness diameter of nickel chromium alloy wire is 0.04 mm,the maximum equilibrium temperature of plain,rib and interlock ele

关 键 词：复合材料 纬编织物 镍铬合金丝 电热性能 层间剪切强度 

分 类 号：TB332[一般工业技术—材料科学与工程]