在各种环氧树脂中银和石的催化
1Department of Polymer Engineering, School of Chemical and Materials Engineering, The University of Suwon, Hwaseong 18323, Gyeonggi-do, Republic of Korea.
Polymers
|February 10, 2024
概括
像 (Bi) 和银 (Ag) 这样的金属粉末有效地催化了用二酸和无水化物固化环氧树脂. 这为先进的环氧应用提供了有前途的途径,而不会影响材料性能.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 催化剂是一种催化剂.
背景情况:
- 环氧树脂在许多应用中都是至关重要的,因为它具有出色的附着性和机械/热性能.
- 传统的环氧树脂固化需要恶劣的条件 (长时间,高温),限制了先进的用途.
- 有机催化剂通常用于克服这些局限性.
研究的目的:
- 在环氧树脂系统中研究 (Bi) 和银 (Ag) 金属粉的催化潜力.
- 评估这些金属催化剂与不同固化剂 (二酸,无水化物,氨基) 的有效性.
- 为了比较Bi和Ag的催化性能,并了解性能差异.
主要方法:
- 探讨Bi和Ag金属粉末的催化活性.
- 使用二酸,无水化物和氨酸固化剂对环氧树脂进行测试.
- 对催化作用对固化动力学和材料性能的影响的分析.
主要成果:
- 和粉在环氧二酸和环氧无水化系统中表现出显著的催化活性.
- 在环氧胺系统中,由于缺乏碳酸盐基,催化活性是可以忽略的.
- 与银相比,石表现出更高的催化效率,这是由于其表面的氧化物层.
- 催化和未催化环氧树脂在固化后表现出可比的热和机械性能.
结论:
- 石和银金属粉末作为有效的催化剂,用于用二酸和无水化物固化环氧树脂.
- 这些金属催化剂可以提高固化速度,而不会对最终材料的性能产生负面影响.
- 这些发现支持在各种环氧基应用中使用Bi和Ag,特别是那些需要受控固化的应用.
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