聚酯-纳米复合材料中无机中间相结构及分散性能  

THE MESOPHASE STRUCTURE AND DISPERSING BEHAVIOR OF INORGANIC PARTICLES IN POLY(ETHYLENE TEREPHTHALATE)-INORGANIC NANOCOMPOSITES

作　　者：柯扬船[1] 杨光福[1] 郑德煜[1] 

机构地区：[1]石油大学(北京),重质油加工国家重点实验室,北京102200

出　　处：《高分子材料科学与工程》2005年第4期193-196,共4页Polymer Materials Science & Engineering

基　　金：PetroChina攻关项目;CNPC创新基金资助

摘　　要：用电镜(SEM,TEM)研究几种聚对苯二甲酸乙二醇酯-无机纳米复合材料结构。结果表明,无机相呈中间相结构分布。比较纳米SiO2和微米MMTs粒子在PET基体中的分散作用与效果表明,纳米SiO2在聚合中易自聚,使PET膜的透明性变差,而结晶行为及结晶速率变化很小;MMTs片层剥离后呈无规取向,等温结晶后颗粒显著长大,它与PET复合膜的透明性比SiO2的高,结晶速率显著提高。纳米SiO2和微米MMTs粒子在PET基体中的分散过程完全相反,前者从20nm^50nm逐步聚并成100nm^200nm,后者从40μm逐步剥离成30nm^70nm。The nanostructure of poly(ethylene terephthalate) (PET)-inorganic nanocomposites (NPET) has been investigated by (SEM), and transmission Electronic Microstropy (TEM). Results show that the inorganic phase takes mesophase distribution morphology in NPET. Compared results show that silica particles have tendency to be self-agglomerated, reduce PET film′s transparency, and keep a similar crystallization behavior and crystallization rate to PET; While, MMTs particles in PET take a random orientation, gather together under the isothermal crystallization condition in NPET film which is relatively transparent, and whose crystallization rate is greatly enhanced. There exists a contrary dispersion process for silica and MMTs particles in PET matrix. E.g., the former particles are agglomerated into 100 nm to 200 nm from 20 nm^50 nm, while the latter transformed from the original 40 μm to 30 nm^70 nm in PET melt.

关 键 词：聚对苯二甲酸乙二醇酯 无机纳米复合材料 中问相 结晶成核 

分 类 号：TB383[一般工业技术—材料科学与工程]