镀Ni-Cu-La-B玻璃纤维对电磁屏蔽复合涂料性能的影响
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摘要
以一种新型镀Ni-Cu-La-B玻璃纤维与片状镍粉为复合填料,以丙烯酸树脂作为粘结剂,研制出了一种新型镀Ni-Cu-La-B玻璃纤维/片状镍粉/丙烯酸树脂电磁波屏蔽复合涂料,并研究了其导电性能和电磁波屏蔽性能。结果表明,添加6 wt%的镀Ni-Cu-La-B玻璃纤维能显著改善涂层的电磁性能,膜厚300μm,涂层电阻率为0.68Ω·cm,涂层屏蔽效能在0.3～1 000 MHz频段内为47.78～64.28 dB。为研制低成本电磁波屏蔽涂料提供了一种新的思路和方法。
A new type of flaky Ni/Ni-Cu-La-B-coated glass fiber/acrylic resin electromagnetic shielding coatings were prepared using flaky Ni powders and Ni-Cu-La-B-coated glass fiber as shielding composite filler and acrylic resin as binder.And the conductivity and electromagnetic shielding properties of the coating were studied.The results indicated that the electromagnetic performance of the coating increased remarkably when the addition of Ni-Cu-La-B-coated glass fiber in the filler was 6 wt%.When the coating layer thickness is 300 μm,the resistivity of the coating is 0.68 Ω·cm and the shielding effectiveness is 47.78～64.28 dB in the frequency range of 0.3～1 000 MHz.This offers a new idea to enhance the added value of the glass fibers and raise the level of electromagnetic radiation protection.
A new type of flaky Ni/Ni-Cu-La-B-coated glass fiber/acrylic resin electromagnetic shielding coatings were prepared using flaky Ni powders and Ni-Cu-La-B-coated glass fiber as shielding composite filler and acrylic resin as binder.And the conductivity and electromagnetic shielding properties of the coating were studied.The results indicated that the electromagnetic performance of the coating increased remarkably when the addition of Ni-Cu-La-B-coated glass fiber in the filler was 6 wt%.When the coating layer thickness is 300 μm,the resistivity of the coating is 0.68 Ω·cm and the shielding effectiveness is 47.78～64.28 dB in the frequency range of 0.3～1 000 MHz.This offers a new idea to enhance the added value of the glass fibers and raise the level of electromagnetic radiation protection.
引文
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[2]赵玉峰.现代环境中的电磁污染[M].北京:电子工业出版社,2003:13-16.
[3]管登高.防电磁信息泄密宽频带电磁波屏蔽集成复合材料研究[D].成都:四川大学材料学院,2004.1-20.
[4]张林昌.电磁干扰的危害[J].安全与电磁兼容,2001(1):1-5.
[5]黎昌金,陈琦,李建龙.电磁辐射的危害与防护探讨[J]内江科技,2018(9):108-110.
[6]包家立,胡亚楠.射频电磁场的健康效应[J].高电压技术2016,42(8):2465-2478.
[7]戴玉婷,王莉莉,荣新山,等.电磁屏蔽材料的研究进展[J].化工新型材料,2015,43(10):24-26.
[8]刘琳,张东.电磁屏蔽材料的研究进展[J].功能材料2015,46(3):3016-3022.
[9]管登高,孙传敏,孙遥,等.化学镀制备电磁屏蔽用导电复合填料的研究进展[J].材料导报,2011,25(4):28-32.
[10]张宁,邵忠财,李晓伟.电磁屏蔽填料的制备及研究进展[J].电镀与精饰,2012,34(3):28-33.
[11]杨锋,周少雄,孙永红.化学镀在电磁屏蔽中的应用[J]表面技术,2009,38(4):70-71,74.
[12]Liu H.B.,Li J.,Wang L.J.Electroless nickel plating on APTHSmodified wood veneer for EMI shielding[J].Applied Surface Science,2010,257(4):1325-1330.
[13]管登高,徐冠立,孙遥,等.一种Ni-Cu-La-B四元合金镀液及用于玻璃纤维化学镀的方法:中国,ZL201410010339.X[P].2016-07-20.
[14]管登高,徐冠立,孙遥,等.一种防电磁波辐射污染功能涂料及其制备方法:中国,ZL 201410010879.8[P].2015-12-09.
[15]管登高,徐冠立,孙遥,等.一种防电磁环境污染涂料及其制备方法:中国,ZL201510823038.3[P].2017-04-05.