掺钢渣钢屑复合砂浆电磁屏蔽性能研究
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摘要
选取钢渣和钢屑两种工业废弃物,混合掺入砂浆中制备得到环保低成本的电磁屏蔽复合砂浆,在测定其电阻率的基础上测量其在300 MHz~3 GHz频率范围内的电磁屏蔽效能。试验结果表明:钢渣钢屑复合砂浆的电磁屏蔽效能随着导电材料掺量的增加而增大,1 cm厚度试件屏蔽效能峰值达到16.63 d B;复合砂浆屏蔽效能随厚度增加显著增大,3 cm试件屏蔽效能峰值达36.31 d B,比同配合比1 cm试件增大了118%;屏蔽效能峰值所对应的频率也随导电物掺量与试件厚度的改变而变化。
Steel slag and steel crape,two industrial waste materials,were chosen to mix to add into cement system to produce electromagnetic shielding composite mortar that was low cost and environmental protection. Its electromagnetic shielding effectiveness from 300 MHz to 3 GHz was studied by flange coaxial method on the basis of testing its electrical conductivity. The test results show that when the conductive material increase,the shielding effectiveness of composite was improved and the maximum value reached 16.63 d B; With the increase of thickness,shielding effectiveness is more obvious; The frequency of the shielding effectiveness of extremum corresponding also changes with the increase of thickness.
Steel slag and steel crape,two industrial waste materials,were chosen to mix to add into cement system to produce electromagnetic shielding composite mortar that was low cost and environmental protection. Its electromagnetic shielding effectiveness from 300 MHz to 3 GHz was studied by flange coaxial method on the basis of testing its electrical conductivity. The test results show that when the conductive material increase,the shielding effectiveness of composite was improved and the maximum value reached 16.63 d B; With the increase of thickness,shielding effectiveness is more obvious; The frequency of the shielding effectiveness of extremum corresponding also changes with the increase of thickness.
引文
[1]曾祥云,李家俊,师春生.碳纤维在电磁功能复合材料中的应用[J].材料导报,1998,12(1):64-67.
[2]姜勇,王刚.电磁屏蔽玻璃在电磁屏蔽方舱上的应用[J].安全与电磁兼容,2005(1):37-39.
[3]杨华明,胡岳华,张慧慧.重晶石基锑掺杂Sn O2导电粉末用于导电涂料及其屏蔽特性[J].功能材料,2006,32(9):1433-1435.
[4]CAO Jingyao,CHUNG D D L.Coke powder as an admixture in cement for electromagnetic shielding[J].Carbon,2003,(41):2434-2435.
[5]RAY M,GEORGE J J.An investigation of the electromagnetic shielding effectiveness of ethylene vinyl acetate elastomer reinforced with carbon nanpfillers[J].Polymers and Polymer Composites,2010,18(2):59-65.
[6]KIMA S W,YOONB Y W,LEEA S J,et al.Electromagnetic shielding properties of soft magnetic powder/polymer composite films for the application to suppress noise in the radio frequence range[J].Journal of Magnetism and Materials,2007,316:473-474.
[7]杨玉山,董发勤,邓强.掺石墨/碳纤维电磁屏蔽砂浆的研究[J].功能材料,2011,10(42):1844-1846.
[8]GB/T 17671—1999,水泥胶砂强度检验方法(ISO)[S].
[9]GJ/B 6190—2008,电磁屏蔽材料屏蔽效能测量方法[S].
[2]姜勇,王刚.电磁屏蔽玻璃在电磁屏蔽方舱上的应用[J].安全与电磁兼容,2005(1):37-39.
[3]杨华明,胡岳华,张慧慧.重晶石基锑掺杂Sn O2导电粉末用于导电涂料及其屏蔽特性[J].功能材料,2006,32(9):1433-1435.
[4]CAO Jingyao,CHUNG D D L.Coke powder as an admixture in cement for electromagnetic shielding[J].Carbon,2003,(41):2434-2435.
[5]RAY M,GEORGE J J.An investigation of the electromagnetic shielding effectiveness of ethylene vinyl acetate elastomer reinforced with carbon nanpfillers[J].Polymers and Polymer Composites,2010,18(2):59-65.
[6]KIMA S W,YOONB Y W,LEEA S J,et al.Electromagnetic shielding properties of soft magnetic powder/polymer composite films for the application to suppress noise in the radio frequence range[J].Journal of Magnetism and Materials,2007,316:473-474.
[7]杨玉山,董发勤,邓强.掺石墨/碳纤维电磁屏蔽砂浆的研究[J].功能材料,2011,10(42):1844-1846.
[8]GB/T 17671—1999,水泥胶砂强度检验方法(ISO)[S].
[9]GJ/B 6190—2008,电磁屏蔽材料屏蔽效能测量方法[S].