金属镀层织物的电磁屏蔽效能与透气性
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摘要
为开发兼具良好透气性和屏蔽效能的金属化织物,在镀铜镍涤纶织物上开列不同尺寸、不同排列的圆孔,研究孔直径、孔中心间距及孔隙率对织物屏蔽效能和透气率的影响,并分析各因素之间的关系。结果表明,随孔中心间距的增加,屏蔽效能增大,透气性降低;随孔直径的增加,屏蔽效能减小,透气性显著增加;孔隙率增加0.2%左右时,屏蔽效能基本相同,而透气率增加明显;在30 MHz～1.5 GHz频率范围,孔直径1 mm,孔中心间距15mm的打孔金属化织物,与未打孔织物相比透气性增加约40 L·m~(-2)·s~(-1),而屏蔽效能下降幅度在5 dB之内,具有相对较好的透气性及屏蔽效能。
In order to develop the metallized fabric with good air permeability and shielding effectiveness, different sizes and different arrangement of round holes were punched in the copper and nickel plated polyester fabric to study the effects of hole diameter, spacing between the center of adjacent holes and porosity on the shielding effectiveness and air permeability of the fabric and analyze the relationship between different elements. The results showed that with the increase of the spacing, the shielding effectiveness increased while the air permeability decreased. With the increase of the hole diameter, the shielding effectiveness decreased while the air permeability increased significantly. When porosity increased by about 0.2%, the shielding effectiveness was basically the same while the air permeability increased significantly. In the frequency range of 30 MHz-1.5 GHz, compared with the no-punching metallized fabric, the air permeability of the punched fabric with 1 mm hole diameter and 15 mm spacing increased about 40 L·m~(-2)·s~(-1) and the shielding effectiveness declined within 5 dB, which had relatively good air permeability and shielding effectiveness.
In order to develop the metallized fabric with good air permeability and shielding effectiveness, different sizes and different arrangement of round holes were punched in the copper and nickel plated polyester fabric to study the effects of hole diameter, spacing between the center of adjacent holes and porosity on the shielding effectiveness and air permeability of the fabric and analyze the relationship between different elements. The results showed that with the increase of the spacing, the shielding effectiveness increased while the air permeability decreased. With the increase of the hole diameter, the shielding effectiveness decreased while the air permeability increased significantly. When porosity increased by about 0.2%, the shielding effectiveness was basically the same while the air permeability increased significantly. In the frequency range of 30 MHz-1.5 GHz, compared with the no-punching metallized fabric, the air permeability of the punched fabric with 1 mm hole diameter and 15 mm spacing increased about 40 L·m~(-2)·s~(-1) and the shielding effectiveness declined within 5 dB, which had relatively good air permeability and shielding effectiveness.
引文
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[17] 田小平,刘和平,王骏.屏蔽技术在结构设计中的应用[J].机械设计与制造工程,1998,27(5):16-18.
[2] 王春霞,李英琳,徐磊,等.化学镀银涤纶织物的制备及其导电性能[J].印染,2014(17):8-11.
[3] 冯亚丽,张慧茹.涤纶织物化学镀银工艺探究[J].高分子材料科学与工程,2014,30(6):106-110.
[4] Mu S,Xie H,Wang W,et al.Electroless silver plating on PET fabric initiated by in situ reduction of polyaniline[J].Applied Surface Science,2015(353):608-614.
[5] HAN E C,KIM E A,OH K W.Electromagnetic interference shielding effectiveness of electroless Cu-plated pet fabrics[J].Synthetic Metals,2001,123(3):469-476.
[6] Meng L,Wei Q,Li Y,et al.Effects of plasma pre-treatment on surface properties of fabric sputtered with copper[J].International Journal of Clothing Science and Technology,2014,26(1):96-104.
[7] Sonehara M,Noguchi S,Kurashina T,et al.Development of an electromagnetic wave shielding textile by electroless Ni-based alloy plating[J].IEEE Transactions on Magnetics,2009,45(10):4173-4175.
[8] Yu D,Kang G,Tian W,et al.Preparation of conductive silk fabric with antibacterial properties by electroless silver plating[J].Applied Surface Science,2015(357):1157-1162.
[9] Lu Y,Liang Q,Li W.Fabrication of copper/modal fabric composites through electroless plating process for electromagnetic interference shielding[J].Materials Chemistry and Physics,2013,140(2):553-558.
[10] 尚世智,谢薇,李云.腈纶纤维表面化学镀铜的研究[J].辽宁化工,2013,42(8):897-900.
[11] 方东升,孙勇,段永华,等.芳纶纤维表面化学镀镍的研究[J].化工新型材料,2013,41(2):60-61+72.
[12] JIANG S X,GUO R H.Electromagnetic shielding and corrosion resistance of electroless Ni-P/Cu-Ni multilayer plated polyester fabric[J].Surface & Coatings Technology,2009,205(17/18):4274-4279.
[13] Lu Y,Liang Q,Xue L.Electroless nickel deposition on silane modified bamboo fabric through silver,copper or nickel activation[J].Surface and Coatings Technology,2012,206(17):3639-3644.
[14] LAI K,SUN R J,CHEN M Y,et al.Electromagnetic shielding effectiveness of fabrics with metallized polyester filaments[J].Textile Research Journal,2007,77(4):242-246.
[15] 施楣梧,肖红,王群.纺织品电磁学研究及电磁纺织品开发[J].纺织学报,2013,34(2):73-81.
[16] 施楣梧,王群.电磁功能纺织材料[M].北京:科学出版社,2016:162-165.
[17] 田小平,刘和平,王骏.屏蔽技术在结构设计中的应用[J].机械设计与制造工程,1998,27(5):16-18.