Cyanate ester (CE) resins are important polymeric materials with excellent dielectric properties, low moisture absorption, and good heat resistance, which have shown great superiority for use in electronic and aerospace industries. In this article, a novel CE resin was designed and synthesized from divinylbenzene. The proposed structures were characterized with Fourier transform infrared spectroscopy, gel permeation chromatography, and mass spectrometry. The chemical reaction activity, heat resistance, dielectric properties, and water adsorption of the synthesized CE derived from divinylbenzene (DVBCy) were examined and compared with the traditional bisphenol A and bisphenol M (4,4′-[1,3-phenylenebis(1-methyl-ethylidene)]bisphenol)-based CE. The DVBCy resin exhibits a glass transition temperature (T g) of 162.7°C, a dielectric constant of 2.61, a dielectric loss tangent angle of 0.0035 at about 10 GHz, and a lower water absorption of 0.77%. Compared with the bisphenol M type CE, DVBCy resin provides slightly superior dielectric properties, higher mechanical properties, more favorable process technology for prepreg construction, and lower costing. The DVBCy blend resin modified with bisphenol A-based CE and core–shell particles possesses suitable rheological properties, and the corresponding quartz fiber-reinforced composite exhibits excellent mechanical as well as dielectric properties.

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二乙烯基苯基氰酸酯树脂及其石英纤维增强复合材料的合成与表征

氰酸酯（CE）树脂是重要的高分子材料，具有优良的介电性能、低吸湿性和良好的耐热性，在电子和航空航天工业中显示出极大的优越性。在本文中，以二乙烯基苯为原料设计并合成了一种新型 CE 树脂。所提出的结构用傅里叶变换红外光谱、凝胶渗透色谱和质谱进行了表征。研究了合成的二乙烯基苯 (DVBCy) 衍生 CE 的化学反应活性、耐热性、介电性能和吸水率，并与传统的双酚 A 和双酚 M (4,4'-[1,3-亚苯基双 (1) -甲基-亚乙基)]双酚)-基于CE。DVBCy 树脂的玻璃化转变温度 (Tg) 为 162.7°C，介电常数为 2.61，在大约 10 GHz 下的介电损耗角正切角为 0.0035，吸水率较低，为 0.77%。与双酚 M 型 CE 相比，DVBCy 树脂提供略优越的介电性能、更高的机械性能、更有利的预浸料施工工艺技术和更低的成本。用双酚 A 基 CE 和核壳颗粒改性的 DVBCy 共混树脂具有合适的流变性能，相应的石英纤维增强复合材料表现出优异的机械和介电性能。