CAJ | 학술논문

超细 Ni 粉具有比表面积大、化学活性高的性质,是良好的电、磁热敏材料,在吸波树脂方面有广泛的用途。首先制备出了Ni粉体团聚体,着重研究了Ni粉体的制备工艺和分散处理工艺。结果表明,采用水合肼溶液还原硫酸 Ni 的方法能够制备出颗粒呈多角形、平均粒径为11.1μm 的 Ni 粉体；Ni 粉以 SDS为分散剂,在水中经过球磨机或高速分散机分散后,Ni粉粒径达到3.28μm,且粒径保持5 d以上；然后,制备了Ni粉体/环氧树脂吸波树脂,采用同轴电缆法测定了复合材料的电磁参数,研究表明,Ni 粉体/环氧树脂复合材料在0.5~12 GHz 频带范围内具有较高的磁损耗,在频率>12 GHz 时,材料表现出较好的介电损耗模式；Ni粉体/环氧树脂复合材料与空气的电磁匹配特性在频率低于8 GHz 时非常好,且频率越低,复合材料板与空气电磁匹配特性越好。
초세 Ni 분구유비표면적대、화학활성고적성질,시량호적전、자열민재료,재흡파수지방면유엄범적용도。수선제비출료Ni분체단취체,착중연구료Ni분체적제비공예화분산처리공예。결과표명,채용수합정용액환원류산 Ni 적방법능구제비출과립정다각형、평균립경위11.1μm 적 Ni 분체；Ni 분이 SDS위분산제,재수중경과구마궤혹고속분산궤분산후,Ni분립경체도3.28μm,차립경보지5 d이상；연후,제비료Ni분체/배양수지흡파수지,채용동축전람법측정료복합재료적전자삼수,연구표명,Ni 분체/배양수지복합재료재0.5~12 GHz 빈대범위내구유교고적자손모,재빈솔>12 GHz 시,재료표현출교호적개전손모모식；Ni분체/배양수지복합재료여공기적전자필배특성재빈솔저우8 GHz 시비상호,차빈솔월저,복합재료판여공기전자필배특성월호。
Ultrafine nickel powder have a large surface area,high chemical activity of nature and was a good e-lectrical and magnetic sensitive material.It also has a wide range of uses in absorbing resin.In this paper,first of all,the nickel powder aggregate was prepared,and this paper studies the preparation technology and disper-sion process of nickel powders.The results showed that particles polygon can be prepared by using hydrazine hydrate reduction of nickel sulfate solution,and the average particle size was 1 1 .1μm.Dispersed by SDS,nick-el powder particle size was 3.28μm after ball mill or high-speed dispersion machine dispersed in water,and par-ticle size can keep unchanged for more than 5 d.Then prepared Ni powder/epoxy resin absorbing resin,meas-ured using the coaxial electromagnetic parameters of the composites.Studies show that,Ni powder/epoxy com-posite material have a high magnetic loss at 0.5-12 GHz.When frequency was greater than 12 GHz,materials show better dielectric loss mode.Ni powder/epoxy composite and the air electromagnetic match very good in characteristics below 8 GHz,and the lower the frequency,the better characteristics of composite plate and air solenoid match.