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Polymer Modification of Ultrafine Metal Iron Particles and Magnetorheological Properties of Their Suspensions
Cheng Bin,Zhu Yurui,Chen Zuyao,Zhou Gangyi,Jiang Wanquan,Wang Cuiying,Zhang Peiqiang
Author NameAffiliation
Cheng Bin University of Science and Technology of China,Structural Research Laboratory, University of Science and Technology of China,Department of Chemistry, Hefei 230026 
Zhu Yurui University of Science and Technology of China,Department of Chemistry, Hefei 230026 
Chen Zuyao University of Science and Technology of China,Structural Research Laboratory, University of Science and Technology of China,Department of Chemistry, Hefei 230026 
Zhou Gangyi Department of Mechanics, University of Science and Technology of China, Hefei 230026 
Jiang Wanquan University of Science and Technology of China,Department of Chemistry, Hefei 230026 
Wang Cuiying University of Science and Technology of China,Department of Chemistry, Hefei 230026 
Zhang Peiqiang Department of Mechanics, University of Science and Technology of China, Hefei 230026 
Abstract:
Monodispersed polymer modified metal iron particles have been synthesized by y-ray radiation. Selecting cetyltrimethyl ammonium bromide (CTAB), sodium dodecyl sulfonate (SDS),Tween-80, TritonX-200 and OP-10 as emulsifiers respectively. Several emulsions containing organic monomers and iron particles were obtained. By comparing stability of these emulsions,we selected a more suitable emulsifier, TritonX-200. Polymer modified iron particles were characterized by XRD, TEM and IR. In addition, pure iron particles and polymer modified iron particles were dispersed into mineral oil respectively to form magnetorheological fluids and their differences in suspension properties have also been investigated. The differences in magnetorheological measurement between suspension of Fe-copolymer particles and Fe3O4-PMMA composite particles have been studied. Experimental results showed that this kind of suspension with Fe-copolymer particles dispersed will become a new type of magnetorheological materials.
Key words:  γ-ray radiation, Fe-copolymer composite particles, Magnetorheological properties
FundProject:国家自然科学基金资助项目(59572031和19772049)
超细金属铁颗粒的高分子修饰及其悬浮液的磁流变性能
程彬,朱玉瑞,陈祖耀,周刚毅,江万权,王翠英,张培强
摘要:
报道以γ射线辐照方法合成出具有良好分散性的高分子复合金属铁粒子.分别选择十二烷基硫酸钠、溴化十六烷基三甲基铵、Tween-80、TritonX-200和OP-10等表面活性剂和有机单体、无机铁颗粒一起制备乳状液,通过对这种含有超细金属铁颗粒乳状液稳定性的比较,以寻求合适的乳化剂.并对以TritonX-200为乳化剂时合成出的高聚物复合铁颗粒进行了XRD、TEM和IP表征.还将实验中所获得的高聚物复合铁粒子与粒径相同的未经修饰的纯铁粒子分别制成了悬浮液,对两者的悬浮性能进行了比较,同时,也将高聚物复合铁粒子
关键词:  γ辐照  乳化剂  高聚物复合铁粒子  磁流变性能
DOI:10.1088/1674-0068/13/2/215-219
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