核-壳纳米SiO_2的制备及其在聚酯中分散性能的研究  

Preparation of Core-Shell SiO_2 Nanoparticles and Research of Their Dispersion Behavior in Polyester

作　　者：王毅 柯扬船[1] 李京子[1] 

机构地区：[1]中国石油大学(北京)重质油国家重点实验室,北京昌平102249

出　　处：《过程工程学报》2006年第z2期290-293,共4页The Chinese Journal of Process Engineering

基　　金：中国石油集团创新基金资助项目(编号:2002F70136);中国石油股份公司攻关基金资助项目(编号:030407206)

摘　　要：以St-ber方法制备出单分散SiO2,经过MPS改性后采用分散聚合的方法制备出SiO2-PS核-壳颗粒.将核-壳颗粒分散到PET中,熔融压片制得PET/SiO2-PS复合材料(SNPET).通过激光粒度仪和电镜观察可知,所制备的SiO2颗粒尺寸在17～110nm之间,并在PET中呈均匀单分散形态.光电雾度仪测量表明,SiO2为35nm时SNPET膜片透光率为87.9%,雾度为43.1%,均高于纯PET.这表明,纳米SiO2的成核作用改变了光学性能,显示出较强纳米效应.Monodisperse SiO2 particles were prepared through St-ber method.After the modification with MPS,SiO2-PS core-shell particles were obtained by the dispersion polymerization.The core-shell particles were dispersed in PET,and the PET/SiO2-PS composite was acquired through melt blending method.Particle size analysis with Malvern Zetasizer Nano and electron microscope showed that the sizes of prepared SiO2 particles were between 17 and 110 nm,and they had monodisperse dispersion morphology in PET.Analysis with a photoeletrical transparency meter showed that the transmittance and haze of SNPET with 35 nm SiO2 were 87.9%,and 43.1% respectively,which were higher than those of pure PET.This indicated that the nucleation of SiO2 changed optical behavior of PET and showed obvious nanosized effect.

关 键 词：SiO2-PS核-壳颗粒 制备 PET 分散 

分 类 号：TB332[一般工业技术—材料科学与工程]