中南大学学报（自然科学版）2017，Vol.48Issue(10)：2597-2605,9.DOI:10.11817/j.issn.1672-7207.2017.10.006
新型耐高温邻苯二甲腈基联苯酚醛树脂中空微球的制备
Preparation of novel heat-resistant phthalonitrile biphenyl-type novolac resin hollow microspheres
摘要
Abstract
Phthalonitrile biphenyl novolac (PBN) was synthesized with 4-nitro-phthalonitrile and 4,4-dichloro-diphenyl- methyl as raw materials, and hollow microspheres of phthalonitrile biphenyl novolac resin with high char yield were prepared in the matrix of PBN by foaming at high temperature. The effects of surfactants, blowing agents and oil bath temperature on morphology and structure of PBN hollow microspheres were studied by optical microscope, scanning electron microscope and floating rate test. The results show that dispersibility of hollow microspheres is gradually improved with the increase of oil bath temperature and the amount of surfactants and blowing agent. However, floating rate of these microspheres increases firstly and then decreases. Microspheres are damaged with excessive blowing agents and high oil bath temperature. PBN hollow microspheres with high degree of sphericity, uniform size and high floating rate are prepared at 150℃ when the amount of FY-F501(surfactant) and 4,4'-oxybis benzenesulfonylhydrazide (blowing agent) is 13.0% and 4.5%,respectively.关键词
发泡法/中空微球/邻苯二甲腈基联苯酚醛树脂/制备Key words
foaming/hollow microspheres/phthalonitrile biphenyl novolac (PBN)/preparation分类
化学化工引用本文复制引用
李芝华,段芳芳,华斯嘉,刘夏清,邹德华,牛捷,刘兰兰..新型耐高温邻苯二甲腈基联苯酚醛树脂中空微球的制备[J].中南大学学报（自然科学版）,2017,48(10):2597-2605,9.基金项目
湖南省重点科技研发项目(2015GK3042)(Project(2015GK3042) supported by the Key Scientific and Technology Research of Hunan Province) （2015GK3042）
