调查自制PEEK寡合体和环氧预聚合物之间的反应:利用物理化学方法优化关键参数
Léopold Stampfer1, Cécile Bouilhac2, Tiphaine Mérian1
1INPT, Laboratoire Génie de Production, École Nationale d'Ingénieurs de Tarbes, Université de Toulouse, 47 Avenue d'Azereix, B.P. 1629, 65016 Tarbes CEDEX, France.
Polymers
|March 28, 2024
概括
这项研究合成了聚乙乙 (oPEEK) 寡合体,并研究了它与环氧树脂的反应. 研究证实了oPEEK在环氧基质中成功集成,增强了无缺陷的聚合物复合材料.
科学领域:
- 聚合物科学 聚合物科学
- 材料科学 材料科学 材料科学
- 有机化学 有机化学
背景情况:
- 热塑性塑料可以提高耐热聚合物抗冲击能力.
- 热塑性-热性聚合物相互作用的机制不太清楚.
- 聚乙乙 (PEEK) 是一种高性能热塑性塑料.
研究的目的:
- 合成一个基终结的聚乙乙) 寡合体 (oPEEK).
- 为了描述oPEEK的物理化学特性.
- 研究oPEEK与环氧树脂的反应和界面兼容性.
主要方法:
- 通过核友芳香替代合成oPEEK.
- 热分析:微分扫描热量测量 (DSC),热重力测量分析 (TGA),热力学分析 (TMA).
- 化学表征:硫化,核磁共振 (NMR),大小排除色谱 (SEC).
- 反应监测:DSC,动态风湿测量.
- 接口分析:原子力显微镜 (AFM).
主要成果:
- 成功合成了含基终结的oPEEK,其分子量为~5070g/mol.
- 使用DSC和风力学证实了oPEEK与环氧预聚合物 (DGEBA) 的反应.
- 在AFM分析中发现,固化环氧oPEEK复合材料中没有接口缺陷 (脱凝,微孔,裂).
- 证明成功地将oPEEK集成到环氧矩阵中.
结论:
- 基终结的oPEEK可以合成和表征.
- oPEEK与环氧树脂发生反应,形成兼容的复合材料.
- 将oPEEK添加到环氧系统中可以提高材料性能,而不会引入接口缺陷.
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