纳米钛粉改性环氧底漆对GFEP飞机电磁屏蔽性能的影响  

Effect of nano-Ti powder modified epoxy primer on the electromagnetic shielding property of GFEP fuselage structure

作　　者：李梦[1] 朱健健[1] 李家艮 

机构地区：[1]中国民用航空飞行学院航空工程学院,四川广汉618307

出　　处：《电子元件与材料》2015年第2期23-26,共4页Electronic Components And Materials

基　　金：国家自然科学基金民航联合基金资助项目(No.61179073);国家自然科学基金民航联合基金重点资助项目(No.U1233202)

摘　　要：航空电子设备的发展和地面电磁波源的迅速增多对玻璃纤维增强环氧树脂(GFEP)机身结构飞机的运行安全构成了威胁,亟需提升此类机身结构的电磁屏蔽性能。介绍了电磁屏蔽效能的计算方法,提出了在GFEP飞机机身涂覆纳米钛粉改性环氧底漆的应对方案。制备了纳米钛粉质量分数为1.0%的改性环氧底漆,研究了改性底漆对GFEP飞机机身典型结构样品电磁屏蔽性能的影响。结果表明:在300 kHz^1.5 GHz的测试范围内,涂覆改性底漆的测试样品的电磁屏蔽效能良好,达到9.5~29.7 dB。The flight security of the aircraft with glass fiber reinforced epoxy polymer （GFEP） fuselage structure was greatly threatened by the rapid development of avionic devices and the sources of electromagnetic waves on the ground. It is urgent to promote the electromagnetic shielding property of the fuselage structure to meet the requests of airworthiness. The calculating method of the electromagnetic shielding effectiveness for a GFEP fuselage structure was introduced. A solution by coating nano-Ti powder modified epoxy primer on the fuselage structure was proposed. In addition, nano-Ti powder modified epoxy primer with 1.0%（mass fraction） nano-Ti was prepared. The effects of the modified epoxy primer on the electromagnetic shielding effectiveness of the typical GFEP fuselage structure samples were studied as well. It is found that the samples with modified primer perform good electromagnetic shielding properties with the electromagnetic shielding effectiveness values of about 9.5 dB to 29.7 dB when the frequency of the coming electromagnetic waves ranges from 300 kHz to 1.5 GHz.

关 键 词：复合材料 电磁屏蔽效能 纳米钛粉 改性环氧底漆 玻璃纤维增强环氧树脂(GFEP) 机身结构 

分 类 号：V259[一般工业技术—材料科学与工程] V250[航空宇航科学与技术—航空宇航制造工程]