复合材料科学与工程Issue(2)：20-26,34,8.DOI:10.19936/j.cnki.2096-8000.20240228.003
高耐热线性环氧树脂的合成及流变特性研究
Synthesis and rheological properties of high heat resistant linear epoxy resin
摘要
Abstract
A modified binary amine(PDP)was synthesized by the Michael addition reaction of N-phenylmale-imide(N-PMI)with 4,4'-diaminodiphenyl methane(DDM),and the linear epoxy resin was prepared by the re-action with bisphenol A epoxy resin.The chemical structure and properties of PDP were studied by hydrogen mag-netic resonance spectroscopy(HNMR),infrared spectroscopy(FTIR)and differential scanning calorimetry(DSC).The thermal resistance(Tg)and rheological properties of linear epoxy resin were studied by DSC,FTIR and gel per-meation chromatography(GPC).The results showed that the viscosity of EP/PDP(1∶1 molar ratio)resin system increased from 0.55 Pa·s to 57 Pa·s with the extension of reaction time,while Tg increased from 55 ℃ to 120 ℃,ant the average molecular weight increased from 4 651 to 25 096.With the decrease of temperature,the viscosity of the system increases from 0.55 Pa·s at 200 ℃ to 60 Pa·s at 140 ℃.The Tg of EP/PDP resin system with different proportions increased with the increase of PDP excess ratio.When EP:PDP was 0.8∶1,Tg was 121 ℃.At the same reaction time,the viscosity of the system increased with the increase of PDP excess ratio.关键词
改性二元胺/线性环氧树脂/4,4'-二氨基二苯甲烷/N-苯基马来酰亚胺/复合材料Key words
modified diamine/linear epoxy resin/4,4'-diaminodiphenyl methane/N-phenyl maleimide/composites分类
通用工业技术引用本文复制引用
张相昌,王钧,陈晞..高耐热线性环氧树脂的合成及流变特性研究[J].复合材料科学与工程,2024,(2):20-26,34,8.基金项目
国家自然科学基金资助项目(51672201) （51672201）
