亚齐里丁的逆化:增强聚硫化物,以获得优越的机械强度和粘合性能
Jieai Fan1, Changzheng Ju1, Songjie Fan1
1School of Chemical Engineering and Light Industry, Guangdong University of Technology, 510006, Guangzhou, China.
Angewandte Chemie (International ed. in English)
|November 19, 2024
概括
这项研究提出了一种新的反向化方法,使用先进的硫聚合物中的三亚齐里丁交叉连接剂. 由此产生的材料表现出强大的机械性能和出色的粘合性,即使在低温下.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 有机合成 有机合成
背景情况:
- 传统的反向火山化依赖于基于烯酸的交叉连接器.
- 开发替代交叉连接策略对于扩大硫聚合物应用至关重要.
- 三亚齐里丁化合物为聚合物合成提供了一个新的化学平台.
研究的目的:
- 引入一种新的反向火山化方法,使用三亚齐里丁交叉连接剂.
- 为了研究三亚齐里丁与元素硫的自我催化反应.
- 描述由此产生的多硫化物的机械和粘合性质.
主要方法:
- 使用商业上可用的三二作为交叉连接器.
- 进行了与元素硫的模型反应,以形成寡硫化物功能化二胺.
- 测试了各种基板上的机械性能 (最大应力,破裂时的延伸) 和附着强度.
- 加入二氧化来增强复合材料的刚性.
主要成果:
- 在三二衍生聚硫化物中,达到8.3MPa的最大应力和~107%的破裂延长.
- 加入二氧化 (20%重量) 的结果是Young的模量为~0.94 GPa.
- 在 (~7.0 MPa),核桃 (~9.6 MPa) 和钢 (~11.0 MPa) 上表现出极好的粘附性.
- 在 -196°C 保持显著的粘合强度 (在钢材上约为 3.3 MPa) .
结论:
- 特里亚齐里丁作为一个有效的替代交叉连接器用于反向火山化.
- 合成的聚硫化物具有强大的机械和粘合性能.
- 可访问的合成路线突出显示了未来硫聚合物创新的潜力.
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