稀土/高分子复合材料的研究进展

Review on Rare Earth/Polymer Composite

详述了稀土 /高分子复合材料的特异性能 ,着重说明了该复合材料的射线屏蔽性能和磁性能。指出稀土 /高分子复合材料在X射线屏蔽应用中可有效弥补铅的弱吸收区 ;具有高稀土含量的复合高分子屏蔽材料具有强的热中子吸收能力 ;含稀土的共聚物具有强顺磁性。提出了制备磁性和磁智能稀土 /高分子复合材料的可行性。此外 ,概述了稀土 /高分子复合材料的 3种主要制备方法 :聚合法、简单掺混法和反应加工法。分析了稀土 /高分子配位前体结构和配位数目对光性能的影响 ;指出了稀土 /高分子复合材料可能具有的离聚物结构及其特征 ;提出原位生成稀土 /高分子纳米复合结构的可行性。还对稀土 /高分子复合材料的结构与性能的关系进行了详细的探讨 ,并对制备稀土

The special properties of rare earth/polymer composite were described. More emphasis was put on the radiation shielding and magnetic properties. In the application of X ray shielding, the rare earth/polymer composite can make up the feeble absorbing area. If the rare earth content is high enough, it can demonstrate strong ability for thermal neutron absorption. The composite has strong paramagnetism. The feasibility of preparing magnetic rare earth/polymer composite was discussed. In addition, three preparation methods were introduced: simple polymerization, mixing and reaction processing. The effect of rare earth/polymer composites pre sturcture and coordinate number of RE ions on the optical property was analyzed. The rare earth/polymer composite may have the structure and property similar to those of the ionomer. The feasibility of the in situ preparation of the rare earth/polymer nano structure was indicated. Besides, the relationship between structure and properties of the rare earth/polymer composite was discussed. The problems associated with the preparation of such composite materials were also presented.