镀银铜粉电磁屏蔽水性涂料的制备及性能研究

摘要以丙烯酸类乳液和片状镀银铜粉为主要原料，添加润湿剂、分散剂、消泡剂、流平剂和水，制备得到电磁屏蔽水性涂料。涂料的制备工艺为：先将润湿剂、分散剂、部分消泡剂和镀银铜粉进行搅拌混合，再加入乳液搅拌均匀，最后加入流平剂和余下消泡剂制得屏蔽涂料。讨论了镀银铜粉含量、乳液种类及用水量对涂层导电性和电磁屏蔽性能的影响，并从导电机理、电磁屏蔽原理和涂层微观结构方面进行了分析。所制备的涂料在100 kHz～15 GHz的频率范围内，其屏蔽效能达到55~65 dB。

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关键词：片状镀银铜粉电磁屏蔽水性涂料

Abstract： Electromagnetic shielding waterborne coatings was developed, with acrylic emulsion and silver plated copper powder as main raw material, wetting agent, dispersing agent, defoamer, leveling agent and water as additives. The process of coating preparation is as following: first,wetting agent, dispersing agent, first part of defoamer and silver plated copper were mixed, then emulsion was added and stired for some time, lastly leveling agent and the rest of defoamer were put into to obtain electromagnetic shielding coatings.The effects of the content of silver plated copper powder, water, and different emulsion on the conductivity and electromagnetic shielding property were discussed by conductive mechanism，electromagnetic shielding theory and the microcosmic structure of coatings. The shielding efficiency of the electromagnetic shielding waterborne coatings is 55—65 dB at range of frequency 100 kHz—15 GHz.

Keywords： silver plated copper powder electromagnetic shielding waterborne coatings

Fund:

教育部重大项目（309008）。

About author: 李桃安（1987-），女，湖北监利人，硕士，主要研究方向：电磁屏蔽水性涂料。

引用本文:

李桃安，毛倩瑾，郑付营，崔素萍，兰明章，王子明，王亚丽.镀银铜粉电磁屏蔽水性涂料的制备及性能研究[J]. 化学工业与工程, 2011,28(3): 9-13

LI Tao-an，MAO Qian-jin，ZHENG Fu-ying，CUI Su-ping，LAN Ming-zhang，WANG Zi-ming，WANG Ya-li.Preparation of Silver Plated Copper Electromagnetic Shielding Waterborne Coatings and Its Property[J]. Chemcial Industry and Engineering, 2011,28(3): 9-13