将纳米菱方氮化硼粒子(RBN)经烘干预处理后,加入氰酸酯树脂(CE)基体,二月桂酸二丁基锡(BDTL)作为引发剂,制得CE/RBN系列浇铸体复合材料。对浇铸体复合材料的力学想能、玻璃化温度、热分解温度和热失重性能实测表明,RBN质量分数为4.0%时,复合材料冲击强度为15.02kJ/m2,较纯基体固化产物提高了71.65%;弯曲强度达到163.60MPa,较纯基体固化产物提高了93.60%;RBN加入质量为有机基体质量的4.0%时,复合材料玻璃化转变温度(Tg)为289.50℃,比纯基体固化产物提高了13.30%;热分解温度为458.30℃,提高了10.73%;质量保持率为72.40%,比纯基体固化产物提高了41.41%。综合各方面因素考虑,RBN加入的质量分数为有机基体质量的4.0%时,复合材料性能得到综合提升。
The nano-rhombohedral boron nitride particles (RBN) were dried and pretreated,and then added with cyanate ester resin (CE) matrix and dibutyltin dilaurate (BDTL) as initiator to prepare CE/RBN series casting composite.The mechanical properties,glass transition temperature,thermal decomposition temperature and thermal weight loss performance of the composite showed that the impact strength was 15.02kJ/m2 when the mass fraction of RBN was 4.0%,which was 71.65% higher than that of the pure matrix cured product.The bending strength reached 163.60MPa,which was 93.60% higher than that of pure matrix cured products.When RBN was 4.0% of organic matrix,the Tg was 289.50℃,which was 13.30% higher than that of pure matrix cured product.The thermal decomposition temperature was 458.30℃,which was increased by 10.73%.The mass retention rate was 72.40%,which was 41.41% higher than the pure matrix cured product.Considering all factors,when the mass fraction of RBN was 4.0% of the mass of the organic matrix,the properties of the composites were comprehensively improved.
[1] 祝保林.氰酸酯树脂性能研究[M].北京:科学出版社,2016,12-16.
[2] 祝保林.氰酸酯树脂应用研究[M].北京:科学出版社,2017,4-8.
[3] Uhlig C,Kahle O,Schäfer O,et al.Blends of tri-block copolymers and addition curing resins:influence of block copolymer-resin compatibility on toughness and matrix properties on toughenability[J].Reactive and Functional Polymers,2019,142:159-182.
[4] 乔海涛,包建文,钟翔宇,等.氰酸酯树脂的改性与固化特性的热分析[J].航空材料学报,2019,39(6):63-72.
[5] 叶清,袁荞龙,黄发荣.含硅芳炔树脂改性氰酸酯树脂的性能[J].宇航材料工艺,2021,51(2):56-61.
[6] 钟翔屿,包建文,李晔.改性氰酸酯树脂反应动力学研究[J].玻璃钢/复合材料,2016(12):38-42.
[7] 敖辽辉.石英纤维布/J-284PD氰酸酯树脂复合材料的制备与性能[J].复合材料科学与工程,2020(3):104-107.
[8] 王飞,石佩洛.树脂基复合材料在雷达天线罩领域的应用及发展[J].宇航材料工艺,2017,47(2):10-13.
[9] 陈宇飞,李治国,刘宇龙,等.Al2O3/环氧树脂-氰酸酯复合材料反应动力学及力学性能[J].复合材料学报,2020,37(4):749-757.
[10] 胡明,祝保林.氰酸酯树脂/纳米氧化铜复合材料制备及性能[J].工程塑料应用,2021,49(4):1-7.
[11] Bajpai A,Saxena P,Kunze K.Tribo-mechanical characterization of carbon fiber-reinforced cyanate ester resins modified with fillers[J].Polymers,2020,12(8):1725-1738.
[12] Zhou H,Ye Q,Xu J.Polyhedral oligomeric silsesquioxane-based hybrid materials and their applications[J].Materials Chemistry Frontiers,2017,1(2):212-230.
