摘要
针对纳米粒子易团聚的特点，利用乳液聚合方法制备纳米Al2O3／PS复合粒子。用TEM、FTIR对复合粒子结构进行了表征。结果表明，所制备的复合粒子具备以纳米氧化铝为核、以聚苯乙烯为壳的核一壳式结构，而且包覆层厚度大约为10-20nm。用复合粒子改性选区激光烧结制备聚苯乙烯基纳米复合材料，通过SEM和FE—SEM研究纳米复合材料烧结体的显微结构，发现纳米粒子较好地分散在聚合物基体中，且纳米氧化铝与聚合物基体之间的界面相容性和粘结性较好，烧结体结构较致密。
In order to prevent nano-partiele aggregating, the nano-Al2O3 particle was covered with PS by emulsion polymerization. The structure of the emulsion polymeric Al2O3/PS composite particle was characterized by TEM and FTIR, The results indicate that the Al2O3/PS composite particles take an approximate ball shape and the particle consists of centered core（Al2O3） and outer shell（PS）, and the shell thickness is about 10-20nm. The structure of polystyrene modified by Al2O3/PS composite particles after SLS was studied by SEM and FE-SEM, respectively. It is found that the nano-partieles disperse in the matrix well, and the interfaeial eompatibility and adhesion property are improved, and the density of the sintering body is increased.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2006年第1期63-68,共6页
Acta Materiae Compositae Sinica
基金
江西省材料科学与工程中心基金(ZX200301020)
航空高等院校自选基金(EC200401021)
江西省自然科学基金(0550098)
关键词
核-壳结构
复合粒子
乳液聚合
选区激光烧结(SLS)
结构表征
core-shell structure
composite particles
emulsion polymerization
selective laser sintering（SLS）
structure characterization
作者简介
通讯作者：郑海忠，博士研究生，讲师，主要从事纳米复合材料的研究E-mail：halzhongzheng@tom．com
