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《工程塑料应用》 2021年第02期
DOI:10.3969/j.issn.1001-3539.2021.02.002
雷达罩用高性能氰酸酯树脂制备及性能
侯燕1,徐志财1,黄赤1,杨鸿帆1,李自东2,刘志林1,张运湘2
1.洛阳尖端技术研究院,河南洛阳 471000; 2.深圳光启高端装备技术研发有限公司,广东深圳 518110 
Preparation and Properties of High Performance Cyanate Ester Resins for Radome
Hou Yan1, Xu Zhicai1, Huang Chi1, Yang Hongfan1, Li Zidong2, Liu Zhilin1, Zhang Yunxiang2
1. Luoyang Institute of Cutting-edge Technology, Luoyang 471000, China; 2. Shenzhen Kuang-Chi High-end Equipment Technology R & D Co., Ltd., Shenzhen 518110, China 
摘要:采用马来酸酐(MAH)改性低分子量聚苯醚(PPE),通过熔融共混法将改性聚苯醚(MAH-PPE)与氰酸酯(CE)树脂进行共混,分析研究MAH-PPE添加量对CE体系热性能、力学性能和介电性能的影响。研究结果表明,MAH-PPE对CE树脂的固化具有明显催化作用,动态热机械和热重分析表明,加入MAH-PPE对CE的耐热性影响不大,随着MAH-PPE添加量的增加,CE体系的玻璃化转变温度和最大热分解温度与纯CE相比基本保持不变。扫描电子显微镜分析表明,当MAH-PPE质量分数低于10%时,MAH-PPE与CE具有良好的界面作用,表现出典型的韧性断裂,随着MAH-PPE添加量的增加,CE/MAH-PPE体系呈现微观相分离。冲击强度测试结果表明,当MAH-PPE质量分数为10%时,CE/MAH-PPE体系的冲击强度达到43.36 kJ/m2,比纯CE提高140.9%,增韧效果达到最佳。介电性能测试结果表明,随着MAH-PPE质量分数的增加,CE/MAH-PPE体系呈现出较好的介电性能,当MAH-PPE质量分数为30%时,CE/MAH-PPE体系在10 GHz下的介电常数和介电损耗角正切值分别为2.84和9.35‰,比纯CE分别降低7.5%和30.8%。 
Abstract:The low molecular weight polyphenylene ether (PPE) was modified by maleic anhydride (MAH), and then the modified PPE (MAH-PPE) was blended with cyanate ester (CE) resin by melt-mixing method. The effects of MAH-PPE content on the thermal stabilities, mechanical and dielectric properties of CE system were investigated. The results show that MAH-PPE can obviously catalyze the curing reaction of CE resin. The thermal performances of CE/MAH-PPE system were investigated by dynamic thermomechanical and thermogravimetric analysis. The results show that the addition of MAH-PPE has little effect on the thermal properties of CE/MAH-PPE system. Compared with pure CE, the glass transition temperature and the temperature of maximum degradation rate keep a relatively stable level with the increase of MAH-PPE content. SEM analysis shows that the fracture surface of CE/MAH-PPE system exhibits typical toughness fracture and good interface adhesion between MAH-PPE and CE. With the increase of MAH-PPE content, CE/MAH-PPE system exhibits microphase separation. The impact strength result shows that when the mass fraction of MAH-PPE is 10%, the toughening effect is the best and the impact strength is 43.36 kJ/m2 which increases by 140.9% in comparison to that of pure CE. The results of dielectric properties show that CE/MAH-PPE system exhibit better dielectric properties with the increase of MAH-PPE content, when the mass fraction of MAH-PPE is 30%, the dielectric constant and the tangent value of dielectric loss angle at 10 GHz are 2.84 and 9.35‰, which are 7.5% and 30.8% lower than those of pure CE, respectively.  
关键词:氰酸酯;聚苯醚;马来酸酐;介电性能;热性能;力学性能 
Keywords:cyanate ester; polyphenylene ether; maleic anhydride; dielectric property; thermal property; mechanical property 
本文引用格式:
侯燕,徐志财,黄赤,等.雷达罩用高性能氰酸酯树脂制备及性能[J].工程塑料应用,2021,49(2):7-13,21.
Hou Yan,Xu Zhicai,Huang Chi,et al. Preparation and properties of high performance cyanate ester resins for radome[J]. Engineering Plastics Application,2021,49(2):7-13,21. 

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