Considering the importance of electromagnetic shielding fillers in the advanced electromagnetic shielding material and the shortcomings of the current fillers in electrical and magnetic conductivity properties, a facile two-step electroless plating process, including coating nickel layer onto nano-SiO2 followed by coating another Ag layer onto SiO2/Ni obtained, was developed to fabricate electromagnetic shielding fillers in this study. The effects of SiO2 loadings on the thickness, density, magnetic permeability and electric conductivity of as obtained SiO2/Ni/Ag fillers have been investigated completely. The results indicated the thickness of Ni and Ag layer could be finely tuned by changing the content of SiO2 and SiO2/Ni during electroless plating processes. The optimised SiO2/Ni/Ag nanocomposites demonstrate high magnetic permeability and excellent electrical conductivity with 1·60×10−5 H m and 1·82×10−5 Ω m respectively. This method provides a facile and low cost strategy to fabricate nano-fillers for the polymer based electromagnetic shielding composite materials.
von KlempererCJ and MaharajD: ‘Composite electromagnetic interference shielding materials for aerospace applications’, Compos. Struct., 2009, 91, 467.
2.
KardarianK, BusaniT, OsorioI, DomingosH, IgrejaR, FrancoR and CortezJ: ‘Sintering of nanoscale silver coated textiles, a new approach to attain conductive fabrics for electromagnetic shielding’, Mater. Chem. Phys., 2014, 147, 815.
3.
ZhangYB, XuF, TanGG, ZhangJL, WangT and LiFS: ‘Improvement of microwave-absorbing properties of Co(2)Z barium ferrite composite by coating Ag nanoparticles’, J. Alloy. Compd, 2014, 615, 749.
4.
Al-SalehMH and SundararajU: ‘A review of vapor grown carbon nanofiber/polymer conductive composites’, Carbon, 2009, 47, 2.
5.
ChenMT, ZhangL, DuanSS, JingSL, JiangH, LuoMF and LiCZ: ‘Highly conductive and flexible polymer composites with improved mechanical and electromagnetic interference shielding performances’, Nanoscale, 2014, 6, 3796.
6.
McArthurMA, JorgeL, CoulombeS and OmanovicS: ‘Synthesis and characterization of 3D Ni nanoparticle/carbon nanotube cathodes for hydrogen evolution in alkaline electrolyte’, J. Power Sour., 2014, 266, 365.
7.
WenB, CaoMS, LuMM, CaoWQ, ShiHL, LiuJ, WangXX, JinHB, FangXY, WangWZ and YuanJ: ‘Reduced graphene oxides: light-weight and high-efficiency electromagnetic interference shielding at elevated temperatures’, Adv. Mater., 2014, 26, 3484.
8.
SongWL, CaoMS, FanLZ, LuMM, LiY, WangCY and JuHF: ‘Highly ordered porous carbon/wax composites for effective electromagnetic attenuation and shielding’, Carbon, 2014, 77, 130.
9.
RohiniR and BoseS: ‘Electromagnetic interference shielding materials derived from gelation of multiwall carbon nanotubes in polystyrene/poly(methyl methacrylate) blends’, Acs. Appl. Mater. Int., 2014, 6, 11302.
10.
HuiB, LiJ and WangLJ: ‘Electromagnetic shielding wood-based composite from electroless plating corrosion-resistant Ni-Cu-P coatings on Fraxinus mandshurica veneer’, Wood Sci. Technol., 2014, 48, 961.
11.
HongMS, ChoiWK, AnKH, KangSJ, ParkSJ, LeeYS and KimBJ: ‘Electromagnetic interference shielding behaviors of carbon fibers-reinforced polypropylene matrix composites: II. Effects of filler length control’, J. Ind. Eng. Chem., 2014, 20, 3901.
12.
LiQ, YinXW, DuanWY, KongL, LiuXM, ChengLF and ZhangLT: ‘Improved dielectric and electromagnetic interference shielding properties of ferrocene-modified polycarbosilane derived SiC/C composite ceramics’, J. Eur. Ceram. Soc., 2014, 34, 2187.
13.
QingYC, MuY, ZhouYY, LuoF, ZhuDM and ZhouWC: ‘Multiwalled carbon nanotubes BaTiO3/silica composites with high complex permittivity and improved electromagnetic interference shielding at elevated temperature’, J. Eur. Ceram. Soc., 2014, 34, 2229.
14.
JiKJ, ZhaoHH, ZhangJ, ChenJ and DaiZD: ‘Fabrication and electromagnetic interference shielding performance of open-cell foam of a Cu-Ni alloy integrated with CNTs’, Appl. Surf. Sci., 2014, 311, 351.
15.
HuangB, GanWP, GuoGQ, LiYF, LinT and LiuXG: ‘Electroless silver plating on Pb-based glass frits by a one-step activation method without stannum and palladium’, Ceram. Int., 2014, 40, 393.
ZhouDS, QiuF and JiangQC: ‘Simultaneously increasing the strength and ductility of nano-sized TiN particle reinforced Al-Cu matrix composites’, Mater. Sci. Eng. A-Struct, 2014, 596, 98.
18.
ChenMN, LiuD and LinZJ: ‘A theoretical model for the electrical conductivity of core-shell nano-composite electrode of SOFC’, Solid State Ionics, 2014, 262, 370.
19.
SunWF, ChenGH and ZhengLL: ‘Electroless deposition of silver particles on graphite nanosheets’, Scr. Mater., 2008, 59, 1031.
20.
WuHP, WuXJ, GeMY, ZhangGQ, WangYW and JiangJZ: ‘Properties investigation on isotropical conductive adhesives filled with silver coated carbon nanotubes’, Compos. Sci. Technol., 2007, 67, 1182.
21.
KhanM, WeiCS, ChenMM, TaoJJ, HuangND, QiZM and LiLB: ‘CTAB-mediated synthesis and characterization of ZnO/Ag core-shell nanocomposites’, J. Alloy. Compd, 2014, 612, 306.
22.
BercotP, Pena-MunozE and PagettiJ: ‘Electrolytic composite Ni-PTFE coatings: an adaptation of Guglielmi's model for the phenomena of incorporation’, Surf. Coat. Technol., 2002, 157, 282.
YiZ, XuXB, FangQ, WangYY, LiXB, TanXL, LuoJS, JiangXD, WuWD, YiYG and TangYJ: ‘Fabrication of silver nanosheets on quartz glass substrates through electroless plating approach’, Appl. Phys. A-mater., 2014, 114, 485.
25.
LongT, HuL, DaiHX and TangYX: ‘Facile synthesis of Ag-reduced graphene oxide hybrids and their application in electromagnetic interference shielding’, Appl. Phys. A-mater., 2014, 116, 25.
