聚酰胺<strong>650</strong>对苯并噁嗪开环聚合和固化物性能的影响

doi:10.11901/1005.3093.2019.223

材料研究学报

2019, Vol. 33

Issue (11): 857-864 DOI: 10.11901/1005.3093.2019.223

研究论文

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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

朱永飞(

),李沛林,苏俊铭,于淑娟

广西天然高分子化学与物理重点实验室南宁师范大学化学与材料学院南宁 530001

Effect of Polyamide 650 on Ring-opening Polymerization of Benzoxazine and Performance of Polybenzoxazine

ZHU Yongfei(

),LI Peilin,SU Junming,YU Shujuan

Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials of Nanning Normal University, Nanning 530001, China

引用本文:

朱永飞,李沛林,苏俊铭,于淑娟. 聚酰胺650对苯并噁嗪开环聚合和固化物性能的影响[J]. 材料研究学报, 2019, 33(11): 857-864.
Yongfei ZHU, Peilin LI, Junming SU, Shujuan YU. Effect of Polyamide 650 on Ring-opening Polymerization of Benzoxazine and Performance of Polybenzoxazine[J]. Chinese Journal of Materials Research, 2019, 33(11): 857-864.

全文: PDF(4462 KB) HTML

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。

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

Abstract：

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.

Key words： organic polymer materials benzoxazine polyamide 650 ring-opening polymerization toughness thermal stability

收稿日期: 2019-04-30

ZTFLH:

TQ323

基金资助:广西自然科学基金(2018GXNSFAA138057)

作者简介: 朱永飞，女，1972年生，副教授

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https://www.cjmr.org/CN/10.11901/1005.3093.2019.223 或 https://www.cjmr.org/CN/Y2019/V33/I11/857

表1 O-PA对Ba(160℃)、Pddm(170℃)和Pa(180℃)凝胶化时间的影响

图1 O-PA/苯并噁嗪的DSC曲线

表2 O-PA/Pa、O-PA/Ba和O-PA/Pddm的DSC测试结果

图2 O-PA与苯并噁嗪及其聚合物间的相互作用

图3 Ba和10Ba在不同固化阶段的FTIR图

图4 Ba和10Ba的DSC曲线

图5 Ba和10Ba的Kissinger和Ozawa拟合曲线

图6 PBa和O-PA/Ba固化物的FTIR谱

图7 O-PA对聚苯并噁嗪冲击强度的影响

图8 O-PA对PBa热稳定性的影响

表3 O-PA对聚苯并噁嗪热稳定性影响的TGA测试结果

图9 O-PA/苯并噁嗪固化物的TGA测试结果

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