改进的酚-溴化氰法合成酚醛型氰酸酯及其表征

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2004, Vol. 25 ›› Issue (4): 406-410.

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

LI Wen-feng¹, LIANG Guo-zheng¹, WANG Zhi-qiang², XUAN Li-xin², FENG Qing-ping³, CHEN Chun³

1. Department of Applied Chemistry, School of Sciences, Northwestern Polytechnical University, Xi'an 710072, China;2. Ji'nan Research Institute for Special Aeronautical Composites, Ji'nan 250023, China;3. Beijing Fiberglass-Reinforced Plastics Institute, Beijing 102101, China

Received:2003-06-20 Revised:2003-11-12 Online:2004-08-25 Published:2004-08-25

Abstract

Abstract: 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℃ is 6.5min. And there is no smoke generated during testing of gel time. The char yield at 800℃ is 63.6% in N2 atmosphere.

Key words: nololac cyanate ester resin, phenol-cyanogen bromide synthetic method, gel time, char yield

LI Wen-feng;LIANG Guo-zheng;WANG Zhi-qiang;XUAN Li-xin;FENG Qing-ping;CHEN Chun. Synthesis and Characterization of a Novolac Cyanate Ester Resin by a Modified Phenol-Cyanogen Bromide Method[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2004, 25(4): 406-410.

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

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