中国塑料2018，Vol.32Issue(2)：37-43,7.DOI:10.19491/j.issn.1001-9278.2018.02.006
表面结构不同的纳米二氧化硅原位改性聚甲醛的研究
Study on In-situ Modification of Polyoxymethylene with Silica Nanoparticles with Different Surface Structures
摘要
Abstract
Polyoxymethylene (POM)/silica nanoparticle composites were fabricated by in-situ polymerization using silica nanoparticles surface-modified with epoxy (RNSE) and methyl groups (DNS) as fillers,and their structure,thermal stability and crystallization behaviors were investigated by scanning electron microscopy,thermogravimetric analysis (TGA),differential scanning calorimetry and polarized light microscopy.The results indicated that RNSE was well dispersed in the POM matrix at the content lower than 1 phr.RNSE exhibited a better dispersibility in the matrix than DNS.The silica nanoparticles could promote the crystallization of POM,thus resulting in the decrease of spherulite size and the improvement of crystalline degree.Compared with DNS,RNSE presented a more effective enhancement on the crystallinity of POM.However,the thermal stability of the composites was reduced by the silica nanoparticles.关键词
聚甲醛/纳米二氧化硅/纳米复合材料/结构/性能Key words
polyoxymethylene/silica nanoparticle/nanocomposite/structure/property分类
化学化工引用本文复制引用
朱方,李庆硕,田华丽,张予东,常海波..表面结构不同的纳米二氧化硅原位改性聚甲醛的研究[J].中国塑料,2018,32(2):37-43,7.基金项目
国家自然科学基金(21204018、U1204518) （21204018、U1204518）
河南省教育厅项目(15A150033) （15A150033）
