纳米磁性Fe<SUB>3</SUB>O<SUB>4</SUB>粉体掺杂聚苯乙烯ICF靶丸材料制备

纳米磁性Fe₃O₄粉体掺杂聚苯乙烯ICF靶丸材料制备

摘要: 为实现惯性约束核聚变中无接触点打靶实验构想，探索在聚苯乙烯(PS)中掺杂纳米磁性粉体，以制备磁性靶丸。采用本体聚合工艺制备了Fe₃O₄/PS磁性靶丸复合材料，通过FTIR、TG-DSC、SEM、VSM等手段对该材料进行了分析表征。结果表明：Fe₃O₄/PS靶丸复合材料的饱和磁化强度随磁性粉体含量的增加而增大;适量粉体的掺入提高了复合材料的拉伸强度和冲击强度，且随粉体含量的增加而增强;所制备的磁性靶丸复合材料悬浮时所需的外界磁场相对较弱，其磁性能满足磁悬浮的条件。

Abstract: The polystyrene ICF target material doped with nanometer magnetic Fe₃O₄ particle was prepared to fabricate the magnetic target without a support rod used in ICF experiment. The Fe₃O₄/PS magnetic composite target material prepared by bulk poly-merization process was characterized by FTIR, TG-DSC, SEM, VSM, respectively. As a result, the susceptibility, tensile strength and impact strength of the composite increase with the increasing of the content of nanometer magnetic Fe₃O₄ particle. The prepared magnetic composite target material can levitate in a weak magnetic field.