摘要
研究了金属粉末、纤维和纳米屏蔽介质在水泥材料中的屏蔽性能。结果表明,在水泥材料中掺入上述3种屏蔽介质均能提高水泥基复合材料的屏蔽性能,其中以纤维-水泥基复合材料的屏蔽性能最好,在100 kHZ～1.5 GHZ内的平均屏蔽效能值达到25dB以上,掺镍纤维的屏蔽效能最好,最大屏蔽效能达33.00 dB;其次为纳米屏蔽介质-水泥基复合材料,其平均屏蔽效能值在20 dB左右;而金属粉末-水泥基复合材料的屏蔽性能最差,其平均屏蔽效能值仅10 dB。
The shielding properties of metals powder,fibre and nano-shielding media in cement were studied. The results indicate that shielding properties of cement-based composites doping three kinds shielding media have. been advanced. The shielding property of cement-based composite doping fibre is the best and its average shielding effectiveness exceeds 25 dB in 100 kHZ-1.5 GI-IZ frequency range;the shielding property of composite doping nickel fibre can reach 33.00 db： average shielding effectiveness of doping nano-shielding media is about 20 dB; shielding property of composite doping metal powder is the lowermost and its average shielding effectiveness is only 10 dB.
出处
《新型建筑材料》
北大核心
2010年第10期80-82,共3页
New Building Materials
基金
江西省自然科学基金项目(2009GZC0001)
江西省教育厅科技项目(GJJ09255)
核资源与环境教育部重点实验室开放基金资助项目(070708)
关键词
屏蔽介质
水泥
屏蔽性能
shielding media
cement
shielding properties
