DAP/聚苯醚改性氰酸酯树脂复合材料及其性能DOI:10.19936/j.cnki.2096-8000.20230328.017DAP/聚苯醚改性氰酸酯树脂复合材料及其性能步晓君1,许星烨2,贾宇翔2,华娇1,祝正浩1,周权2*,倪礼忠1(1.上海固瑞泰复合材料科技有限公司,上海201400;2.华东理工大学材料科学与工程学院特种功能高分子材料及相关技术教育部重点实验室,上海200237)摘要:邻苯二甲酸二烯丙酯(DAP)和聚苯醚(PPO)共同改性氰酸酯树脂(CE),利用差式扫描量热法(DSC)和热失重分析(TGA)考察了DAP/PPO/CE树脂的固化行为和耐热性能。按照不同质量比制备了DAP/PPO/CE玻璃纤维复合材料,通过介电分析仪(DEA)、弯曲强度和层间剪切强度测试分析该复合材料的各项性能。结果表明,DAP的加入促进了PPO/CE树脂的固化,改善了复合材料的力学性能和介电性能,树脂体系仍保持优异的耐热性能,并且在DAP/PPO/CE=8/40/100(质量比)时促进效果、力学性能和介电性能最为优异,弯曲强度可达651.4MPa,层间剪切强度可达62.0MPa。关键词:邻苯二甲酸二烯丙酯;改性树脂;力学性能;介电性能;复合材料中图分类号:TB332文献标识码:A文章编号:2096-8000(2023)03-0108-05PropertiesofDAP/polyphenyleneoxidemodifiedcyanateesteranditscompositesBUXiaojun1,XUXingye2,JIAYuxiang2,HUAJiao1,ZHUZhenghao1,ZHOUQuan2*,NILizhong1(1.ShanghaiGreatCompositeSci.&Tech.Co.,Ltd.,Shanghai201400,China;2.KeyLaboratoryforSpecialPolymerMaterialsandRelatedTechnology,SchoolofMaterialsScienceandEngineering,EastChinaUniversityofScienceandTechnology,Shanghai200237,China)Abstract:Thecyanateesterresin(CE)wasmodifiedbypolyphenyleneoxide(PPO)anddiallylphthalate(DAP),thecuringbehaviorandheatresistanceofDAP/PPO/CEresinwereinvestigatedbyDSCandTGA.Theglassfiberreinforcedcompositeswerepreparedaccordingtodifferentmassratios,andtheperformanceofthecom-positeswereanalyzedusingDEA,flexuralstrengthandinterlaminarshearstrength.TheresultsshowthatDAPcanpromotethecuringofPPO/CEresin,andimprovethemechanicalanddielectricpropertiesofthecompositewhilemaintaintheexcellentheatresistanceoftheresinsystem.WhenDAP/PPO/CE=8/40/100(massratio),thepro-motingeffect,mechanicalpropertiesanddielectricpropertiesarethebest.Theflexuralstrengthandinter...