塑料科技2023，Vol.51Issue(11)：27-33,7.DOI:10.15925/j.cnki.issn1005-3360.2023.11.006
含DOPO-Si环氧树脂的阻燃和力学性能影响机制研究
Influence of Mechanism of Flame Retardant and Mechanical Properties of Epoxy Resin Containing DOPO-Si
张艳勇 1郝永胜 1姜琳琳 1崔景腾 1孙世海 2车帅2
作者信息
- 1. 沈阳化工大学材料科学与工程学院,辽宁 沈阳 110142
- 2. 沈阳化工大学机械与动力工程学院,辽宁 沈阳 110142
- 折叠
摘要
Abstract
To inhibit the epoxy resin combustion,a novel flame retardant containing silicon and phosphorous(DOPO-Si)was synthesized using silane coupling agent and 9,10-dihydrogen-9-oxygen-10-phosphorus-10-oxide(DOPO)as reactants to improve the flame retardancy of epoxy resin.DOPO-Si can be mixed with epoxy resin or grafted on the epoxy chain to improve the flame-retardancy of the epoxy resin.When 5%DOPO-Si is introduced into the epoxy resin,the cured epoxy resin can pass the vertically combustion(UL-94)and reach V-0 grade,the limiting oxygen index(LOI)is up to 34.8%.Meanwhile,the tensile strength of epoxy resin is 70.5 MPa,which is 22.6%higher than that of pure epoxy resin.When the grafting rate of DOPO-Si is up to 5%,the cured epoxy resin also can pass the UL-94 vertical combustion test and get V-0 grade and the LOI is 35.1%,but the mechanical properties just increase a little.This new flame retardant DOPO-Si,whether it is blended with epoxy resin or grafted onto the main chain of epoxy resin,can significantly improve the flame retardancy of epoxy resin,and the mechanical properties are also improved to varying degrees.However,compared with pure epoxy resin,the glass transition temperature has decreased to varying degrees,and the decrease of blending method is greater than that of grafting method.Therefore,it can be flexibly selected according to actual needs in practical applications.关键词
环氧树脂/9,10-二氢-9-氧杂-10-磷杂菲-10-氧化物/阻燃性能/力学性能Key words
Epoxy resin/DOPO/Flame retardant/Mechanical properties分类
化学化工引用本文复制引用
张艳勇,郝永胜,姜琳琳,崔景腾,孙世海,车帅..含DOPO-Si环氧树脂的阻燃和力学性能影响机制研究[J].塑料科技,2023,51(11):27-33,7.
