氧化天然中的二次网络形成与替代疗法
Alexandra Shakun1,2, Noora Kemppainen2, Essi Sarlin1
1Materials Science and Environmental Engineering, Tampere University, P.O. Box 589, FI-33014 Tampere, Finland.
ACS omega
|September 2, 2024
概括
氧化天然 (ENR) 可以通过使用二次治疗剂 (如二甲酸 (ZDMA) 或酸 (SA) 与硫) 形成可改性键. 低度的化物 (ZnCl2) 也可以使ENR化合物恢复应力和相当强的抗拉强度.
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
- 技术 技术 技术
背景情况:
- 环氧化天然 (ENR) 是一种可持续材料,具有牺牲和可改造债券的潜力.
- 对于ENR需要二次疗法,但它们的比较有效性和化合物中的相互作用尚未完全理解.
研究的目的:
- 为了比较化 (ZnCl2),二甲酸盐 (ZDMA) 和脂酸 (SA) 作为二次治疗ENR的有效性.
- 研究这些治疗剂对网络形成和与其他化合物成分的相互作用的影响.
- 在不同的条件下评估ENR化合物与这些二次治疗剂的性能.
主要方法:
- 对ZnCl2,ZDMA和SA作为ENR化合物中二次治疗剂的比较分析.
- 使用Payne测量对网络形成和成分相互作用的评估.
- 在循环加载过程中评估拉伸性能和自我修复行为.
主要成果:
- 单独的二次疗法不足以充分化ENR.
- 与硫治疗剂相结合的ZDMA或SA改善了拉伸性能,并证明了微层自我愈合.
- 高ZnCl2 (10 phr) 形成了弱键,由于与化合物成分的相互作用而降解了物理性能.
- 减少的ZnCl2 (1phr) 允许应力恢复和相当的抗拉强度.
结论:
- ZDMA和SA是对ENR有希望的二次疗法,增强机械性质,并使与硫一起使用时能够自我愈合.
- 在非常低的度 (1phr) 中,ZnCl2可以有效地实现应力恢复和在ENR中可接受的抗拉强度.
- 仔细选择和优化二次疗法对于开发具有定制性质的基于ENR的先进材料至关重要.
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