铁钴纳米合金/天然橡胶复合材料的制备及性能研究  

Preparation and properties of amorphous FeCo alloy nanoparticles/natural rubber composites

作　　者：王凤平[1] 薛行华[1,2] 马立胜[1] 蔡静瑶[1] 符新[1] 

机构地区：[1]海南大学材料与化工学院,海南海口570228 [2]中国热带农业科学院橡胶研究所,海南儋州571737

出　　处：《弹性体》2011年第5期22-25,共4页China Elastomerics

基　　金：中国热带农业科学院橡胶研究所基本科研业务费专项资金项目(YWFZX09-12(N));海南省自然科学基金项目(509002)

摘　　要：采用液相还原法制备铁钴合金纳米粒子(nano-FeCo),通过不同的制备工艺与天然胶乳共混,制备铁钴纳米合金/天然橡胶复合材料(NR/nano-FeCo)。利用X射线衍射仪(XRD)和透射电子显微镜(TEM)对样品结构进行表征。并考察了复合材料的力学性能及不同制备工艺对复合材料性能的影响。结果表明,液相还原法制备的nano-FeCo粒子为无定形结构,粒径约为70 nm。在天然橡胶(NR)基体中分散均匀,分散相粒径在100 nm左右;随着纳米粒子的加入,有效地提高了复合材料的力学性能,同时,可提高NR的热老化性能。NR/nano-FeCo的最佳制备工艺是乳液共混法。FeCo alloy nanoparticles（nano-FeCo） were synthesized by reduction process in liquid phase.Then the nano-FeCo particles were coagulated with natural rubber latex to prepare FeCo alloy nanoparticles/natural rubber composites（NR/nano-FeCo）.The structure and properties of the samples were investigated by X-ray powder diffraction（XRD） and transmission electron microscopy（TEM）.And its mechanical properties and different processes were studied.The results showed that nano-FeCo particles are amorphous.The average size of the particles is about 70nm.The nano-FeCo particles are homogenously distributed throughout NR matrix,and the particle size of disperse phase is about 100 nm.The mechanical properties of composites are effectively improved with the addition of nanoparticles.Thermal aging property of NR are also improved with the addition of nanoparticles.The best process is emulsion coagulation method.

关 键 词：铁钴纳米合金 复合材料 微观结构 力学性能 工艺条件 

分 类 号：TQ332[化学工程—橡胶工业]