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以天然膨胀石墨(EG)为基本原料,采用超声分散法制得NanoG(纳米石墨微片);然后采用化学镀法制得磁性填料Ni-NanoG(镀镍纳米石墨微片);最后采用溶液共混法制得丙烯酸酯磁性PSA(压敏胶)——Ni-NanoG/PSA。研究结果表明:NanoG表面覆盖了一层均匀紧凑的金属Ni,Ni-NanoG中O-H与丙烯酸酯PSA中O-H之间已形成了氢键,故Ni-NanoG已均匀分散在丙烯酸酯PSA中;当w(Ni-NanoG)=20%时,Ni-NanoG/PSA的磁性能和粘接性能俱佳,其饱和磁化强度(Ms)为11.96 emu/g,矫顽力(Hc)为1.38 Oe,180°剥离强度为0.62 kN/m和剪切强度为0.81 MPa。
NanoG (nanometer graphite microchip) was prepared by ultrasonic dispersion method with natural expanded graphite (EG) as raw material; then magnetic filler Ni-NanoG (nickel-plated graphite nanoplatelets) was prepared by electroless plating method; Acrylate magnetic PSA (pressure sensitive adhesive) - Ni-NanoG / PSA. The results show that: NanoG surface is covered with a layer of uniform and compact metal Ni, Ni-NanoG has formed hydrogen bonds between OH and acrylate OH in Ni-NanoG, Ni-NanoG has been uniformly dispersed in the acrylate PSA; when w Ni-NanoG / PSA has excellent magnetic and adhesion properties with a saturation magnetization (Ms) of 11.96 emu / g and a coercivity (Hc) of 1.38 Oe at a Ni-NanoG of 20% Peel strength was 0.62 kN / m and shear strength was 0.81 MPa.