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聚酰胺650对苯并噁嗪开环聚合和固化物性能的影响

Effect of Polyamide 650 on Ring-opening Polymerization of Benzoxazine and Performance of Polybenzoxazine
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摘要 制备了聚酰胺650(O-PA)/苯并噁嗪混合体系并测试凝胶化时间、差示扫描量热分析(DSC)和傅里叶变换红外光谱(FTIR),以研究O-PA对苯并噁嗪开环聚合和韧性的影响。结果表明,O-PA能促进苯并噁嗪的开环聚合反应,使其凝胶化时间、开环聚合的起始和峰值温度明显降低,但是不影响苯并噁嗪开环聚合过程中的结构演变和聚苯并噁嗪的化学结构。O-PA的引入使聚苯并噁嗪的韧性明显提高,但是热稳定性有所降低。结果表明,聚酰胺650是一类良好的苯并噁嗪催化剂。 The mixtures of polyamide 650(O-PA) and benzoxazine were prepared to investigate the effect of O-PA on the ring-opening polymerization(ROP) of benzoxazine and the toughness of polybenzoxazine, while the ROP process of O-PA/benzoxazine mixtures was monitored by means of gelation time measurement, DSC and FTIR. The results show that O-PA could accelerate the ROP reaction of benzoxazine resulting in remark decrease of the gelation time, initial and peak temperatures of ROP of benzoxazine. However, the structures evolution during the ROP process of benzoxazine and chemical structures of polybenzoxazine hardly changed with the incorporation of O-PA. The toughness of polybenzoxazine increased obviously with the addition of O-PA. The addition of O-PA made the thermal stability of polybenzoxazine decrease a little. Thereby, polyamide 650 is a kind of excellent catalysis for benzoxazine.
作者 朱永飞 李沛林 苏俊铭 于淑娟 ZHU Yongfei;LI Peilin;SU Junming;YU Shujuan(Guangxi Key L aboralory of Natural Polymer Chemistry and Physics,College of Chemistry and Materials of Nanning Normal University,Nanning 530001,China)
出处 《材料研究学报》 EI CAS CSCD 北大核心 2019年第11期857-864,共8页 Chinese Journal of Materials Research
基金 广西自然科学基金(2018GXNSFAA138057)~~
关键词 有机高分子材料 苯并噁嗪 聚酰胺650 开环聚合 韧性 热稳定性 organic polymer materials benzoxazine polyamide 650 ring-opening polymerization toughness thermal stability
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