FeCrAl/GF/CFRP层合板制备与电热性能  

Preparation and Electrothermal Properties of FeCrAl/GF/CFRP Laminates

作　　者：曹泽仁 陈蕾 魏士博 张晓琼 王涛 CAO Zeren;CHEN Lei;WEI Shibo;ZHANG Xiaoqiong;WANG Tao(College of Mechanical and Vehicle Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Engineering Research Center of Advanced Metal Composites Forming Technology and Equipment of Ministry of Education,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]太原理工大学机械与运载工程学院,太原030024 [2]太原理工大学先进金属复合材料成形技术与装备教育部工程研究中心,太原030024

出　　处：《中国表面工程》2025年第1期172-181,共10页China Surface Engineering

基　　金：国家自然科学基金(51974196);山西省科技重大专项(202101120401008);中央政府引导地方科技发展专项资金(YDZX2019140002149)。

摘　　要：飞机结冰是高空飞行时面临的危险问题,对飞机飞行安全构成极大的威胁。根据主动电除冰需求,提出一种高电阻不锈钢箔带与碳纤维预浸料复合的新型层合材料,采用真空袋工艺在热压罐内加温加压制备铁铬铝(FeCrAl)/玻璃纤维(GF)/碳纤维(CFRP)层合板,其拉剪强度达到7.1 MPa。为了验证其电热性能,研究铜箔胶带、导电银浆加铜箔带和铜箔带分别作为电极对接触电阻的影响。在不同功率密度的输入下测试层合板的电热性能。结果表明,该层合板在0.164 W/cm^(2)的较低功率密度输入下,温度可以迅速从室温升高至65℃,同时温度分布均匀,且在30次电热循环测试后电热性能保持不变,具有良好的疲劳性能。电热除冰测试中,层合板在0.164 W/cm^(2)的功率密度输入下,于260 s内将冰层完全融化,该层合板在防/除冰领域的应用具有良好的发展前景。研究表明,纤维金属层合板(FML)的电热除冰性能优秀,制备过程简单,界面结合良好,具有作为飞机机翼蒙皮除冰材料的潜力。Icing is a major problem faced by aircraft flying at high altitudes in cold and humid conditions and poses a tremendous threat to the flight safety of aircraft.Research and development of new deicing technology is thus of great importance.Electrothermal deicing is a new type of deicing technology that uses electric heating elements to heat a composite substrate,effectively solving the problem of high energy consumption of current hot-air deicing technology used in aircrafts.In addition,in combination with a fiber metal laminate(FML),which has the characteristics of easy preparation and excellent mechanical properties,a new type of laminated material that utilizes high-resistance stainless steel foil tape and a carbon fiber prepreg composite is proposed.The surface-pretreated FeCrAl is sequentially laminated with glass fiber(GF)and a carbon fiber epoxy resin prepreg(CFRP)and then cured by hot pressing in a vacuum environment.The interfacial bonding condition of the FML is characterized by scanning electron microscopy observation of the cross-sectional morphology of the laminates and by tensile shear tests on the prepared single-layer tensile shear specimens.The metal-fiber interface is well bonded in the FML cross-section at a magnification of×2000 without delamination.Fewer holes and cracks are present in the resin matrix,and the tensile shear strength of the single-lap tensile shear specimen can reach 7.1 MPa.Results show that the pretreatment of the metal surface can effectively improve the interfacial bonding strength of the FML.Different electrodes and loading methods produce different contact resistances at the current input,and the magnitude of the contact resistance affects the local temperature of the load.Therefore,the effects of three electrode loading methods,namely,double-sided conductive copper foil tape,a copper foil strip,and conductive silver paste combined with a copper foil strip,on the contact resistance are investigated separately.The output voltages of the pulsed power supply fed with a cons

关 键 词：碳纤维 层合板 结合强度 疲劳测试 焦耳加热 

分 类 号：TG496[金属学及工艺—焊接]