氰酸酯树脂的增韧改性及耐高温改性

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Abstract：Cyanate esterresins haveexcelent heatresistance，dielectric properties，flame retardancyandlowmoisture absorption，whicharewidelyused inaerospace，electronics industry，andadhesives.However，due totheirabundantbenzene ring structure，，theformationof triazinering structureduring polymerization，andhighcroslinking density，theresins tend to be britle.Therefore，modificationisnecessaryduringitsapplicationThispapersystematicallysummarizesthemodification methods forcyanateester resin，such asusing thermoseting resins，thermoplasticresins，andrubber elastomers. Through blending orcopolymerization，these methods significantlyimprovethetoughnessof cyanateesterresin.Theresearch progress inenhancing its high-temperatureresistanceisdiscussedincludingphenoliccyanateesterresin，BMmodified cyanateester，and high-temperature-resistantcyanate ester withadded nanoparticles orgraphene.Finaly，the development directions of cyanate ester resin are prospected.

Keywords：high temperature resistance；cyanate ester；modification；composites

1引言

耐高温树脂基复合材料在航空航天领域的应用备受关注，自上世纪70年代开始，研究者系统开展了众多耐高温树脂基体的研究工作，如酚醛、双马来酰亚胺、聚酰亚胺、氰酸酯、聚芳基乙炔、聚苯并噁嗪树脂等，其中氰酸酯树脂聚合时，发生环三聚反应生成三嗪环结构，如图1所示，而具有优异的耐热性、介电性能、阻燃特性及低吸湿性，在航空航天、电子工业和胶粘剂等领域应用广泛[1-3]。（剩余7690字）