改进的酚-溴化氰法合成酚醛型氰酸酯及其表征  

Synthesis and Characterization of a Novolac Cyanate Ester Resin by a Modified Phenol-Cyanogen Bromide Method

作　　者：李文峰[1] 梁国正[1] 王志强 轩立新 冯青平[3] 陈淳[3] 

机构地区：[1]西北工业大学理学院应用化学系,陕西西安710072 [2]济南复合材料特种结构研究所,山东济南250023 [3]北京玻璃钢研究设计院,北京102101

出　　处：《航空学报》2004年第4期406-410,共5页Acta Aeronautica et Astronautica Sinica

摘　　要：采用改进的酚-溴化氰法合成了酚醛型氰酸酯单体树脂,并用红外、凝胶实验及热失重分析(TGA)对其进行了结构和性能的表征。与传统的酚-溴化氰法相比,改进的酚-溴化氰法得到了性能稳定的合成产物,该产物在200℃时的凝胶时间为6 5min,在凝胶时无冒烟、发黑现象,固化树脂在800℃时氮气氛下的残碳率为63 6%。Novolac cyanate ester monomer is synthesized by a modified phenol-cyanogen bromide method. The product is characterized by FTIR, gel time and TGA analysis. Compared with conventional phenol-cyanogen bromide method, the modified synthesis gives stable product. The gel time of synthesized monomer at 200°C is 6.5 min. There is no smoke generated during testing of gel time. The char yield at 800°C is 63.6% in N2 atmosphere.

关 键 词：酚醛型氰酸酯树脂 酚—溴化氰合成法 凝胶时间 残碳率 

分 类 号：TQ323.1[化学工程—合成树脂塑料工业]