北京航空航天大学学报 ›› 2012, Vol. 38 ›› Issue (5): 707-710.

• 论文 • 上一篇    

双酚B型氰酸酯的制备与性能

轩立新1, 王志强1, 王洪玮2, 刘艳明1   

  1. 1. 中国航空工业集团公司 济南特种结构研究所, 济南 250023;
    2. 空军驻济南军事代表室, 济南 250023
  • 收稿日期:2012-02-14 出版日期:2012-05-30 发布日期:2012-05-30

Synthesis and properties of bisphenol B dicyanate ester resin

Xuan Lixin1, Wang Zhiqiang1, Wang Hongwei2, Liu Yanming1   

  1. 1. Research Institute for Special Structure of Aeronautical Composite, China Aviation Industry Corporation, Jinan 250023;
    2. China Airforce Representative Office in Jinan, Jinan 250023
  • Received:2012-02-14 Online:2012-05-30 Published:2012-05-30

摘要: 研究了碱性催化法合成非晶态双酚B型氰酸酯的制备工艺,利用红外光谱(FTIR)、核磁共振(NMR)、热分析(DSC)、流变仪等方法分析了双酚B型氰酸酯的结构性能和工艺特性,研究和测试了树脂固化物介电性能、耐热性能和力学性能.研究结果表明,制备的双酚B型氰酸酯纯度高,200 ℃时的凝胶时间在100 min以上;该型氰酸酯具有较低的粘度(η25℃=470 mPa·s,η40℃=210 mPa·s),适于室温树脂传递模塑(RTM,Resin Transfer Molding)成型工艺;250 ℃固化后的介电常数为2.75,介质损耗角正切0.007(10 GHz),玻璃化转变温度299 ℃,弯曲强度174 MPa,模量3.2 GPa,综合性能优异.

Abstract: The preparation process of non-crystallized BBDCy(bisphenol B dicyanate ester resin) by alkaline catalyzer was researched. The structure and processing property of BBDCy monomer were characterized by FTIR, NMR, DSC and Rheometer. The dielectric property, heat resistance and mechanical properties of cured resin were also studied. The results show that the prepared BBDCy has high purity, and the gel time at 200 ℃ exceeds 100 min. This type of Cyanate has lower viscosity(η25℃=470 mPa·s,η40℃=210 mPa·s), which is suitable for RTM(resin transfer molding) processing at room temperature. After cured at 250 ℃, the dielectric constant of resin is 2.75, and the dielectric loss is 0.007 at 10 GHz. The cured resin exhibits excellent comprehensive with the glass-transition temperature is 299 ℃, the flexural strength is 174 MPa and the flexural modulus is 3.2 GPa.

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