双酚二炔丙醚/氰酸酯共混树脂的制备与性能  

Preparation and Property of Propargyl Ether Modified Cyanate Esters

作　　者：叶清 李川 王晓蕾 袁荞龙[1] 黄发荣[1] Qing Ye;Chuan Li;Xiaolei Wang;Qiaolong Yuan;Farong Huang(Key laboratory of Specially Functional Polymerica Materials and Related Technology(Ministry Education),School of Materials Science and Engineering,East China University of Science and Technology,Shanghai 200237,China;Shanghai Composites Sci&Tech,Co.,Ltd.,Shanghai 201112,China)

机构地区：[1]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 [2]上海复合材料科技有限公司,上海201112

出　　处：《高分子材料科学与工程》2022年第6期1-7,14,共8页Polymer Materials Science & Engineering

基　　金：中央高校基本科研业务费专项资金(JKD01211701);上海航天科技创新基金(SAST2018-070)。

摘　　要：合成了双酚A二炔丙醚(BADPE)和双酚E二炔丙醚(BEDPE)2种炔丙醚,分别与双酚A型氰酸酯树脂(BADCy)和双酚E型氰酸酯(BEDCy)共混制备了4种改性氰酸酯树脂。对改性氰酸酯的固化反应、热性能及力学性能进行了研究。结果表明,双酚二炔丙醚(BPDPE)可催化氰酸酯的固化反应,降低固化反应温度和反应活化能,加入中性镍催化剂可显著降低共混树脂的起始固化温度(T_(i)),200℃时可实现共混树脂的固化。BPDPE改性氰酸酯树脂固化物在氮气中5%热失重(T_(d5))温度在370℃以上,800℃残留率(Y_(r800℃))可达40%以上,在空气中的T_(d5)保持在380℃以上、极限氧指数(LOI)高于34%。BPDPE改性氰酸酯树脂的玻璃化转变温度(T_(g))高于200℃。BPDPE改性BEDCy树脂催化固化的浇铸体弯曲强度达129.4 MPa、弯曲模量达4.3 GPa、冲击强度达27.3 kJ/m^(2)。Bisphenol A dipropargyl ether(BADPE)and bisphenol E dipropargyl ether(BEDPE)were synthesized and used to mix with bisphenol A-type cyanate ester(BADCy)and bisphenol E-type cyanate ester(BEDCy)in solution.Four blend resins of bisphenol dipropargyl ether(BPDPE)and cyanate esters were prepared by evaporating the solutions under vacuum.The curing reaction,thermal properties and mechanical properties of the BPDPE modified cyanate ester resins were studied.The results show that the BPDPE can decrease the cure temperature of the cyanate esters as well as apparent activation energy of the cure reactions.The neutral nickel catalyst can drop the initial temperature of cure reactions(T_(i))evidently.The modified cyanate esters can almost be cured under 200℃.The temperature of 5% mass loss(T_(d5))and residual yield at 800℃(Y_(r800℃))in N_(2) of the cured cyanate esters modified with BPDPE are higher than 370℃ and 40%,respectively.The T_(d5) in air of the cured resins is above 380℃.The limited oxygen index(LOI)of the cured resins is larger than 34%.The glass transition temperature(T_(g))of the BPDPE modified cyanate ester resins is higher than 200℃.The cured cyanate esters modified with BPDPE exhibit good mechanical performance,and one of the cured resins,the BADPE modified BEDCy with 1.2% catalyst displays the flexural strength of 129.4 MPa,flexural modulus of 4.3 GPa,and impact strength of 27.3 kJ/m^(2).

关 键 词：双酚二炔丙醚 氰酸酯 共混 催化固化 热-力学性能 

分 类 号：TQ323[化学工程—合成树脂塑料工业]