来自氧化植物油的灵活生物基热:对阿里法特交叉连接剂的研究
Jan Janesch1,2, Axel Solt-Rindler3, Lara Dumschat2,3
1Institute of Wood Technology and Renewable Materials, Department of Natural Sciences and Sustainable Resources, BOKU-University of Natural Resources and Life Sciences, Vienna, Konrad-Lorenz-Straße 24, 3430 Tulln, Austria.
ACS applied polymer materials
|April 3, 2025
概括
这项研究使用氧化亚麻油和不同硬化剂制备了生物基热. 与脂肪酸相比,像HMDA和BHMT这样的氨基硬化剂产生了优越的机械和热性能.
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
- 可持续材料 可持续材料
背景情况:
- 生物基热为以石油为基础的聚合物提供可持续的替代品.
- 环氧化亚麻油 (ELO) 是热制备的有希望的可再生资源.
- 调整交联化学是优化热性能至关重要的.
研究的目的:
- 准备和表征从环氧化亚麻油 (ELO) 制成的柔性生物基热.
- 为了比较氨基硬化剂 (HMDA,BHMT) 与碳酸硬化剂 (脂酸) 的性能.
- 评估产生的热的机械,热和化学性能.
主要方法:
- ELO与六甲二胺 (HMDA),二甲三胺 (BHMT) 和脂肪酸的交叉链接.
- 使用富里叶变换红外 (FT-IR) 光谱学,差分扫描热度计 (DSC),动态机械分析 (DMA) 和热重力测量分析 (TGA) 的表征.
- 拉伸试验用于评估机械性能.
主要成果:
- 氨基硬化剂形成了胺网络,增强了机械性能 (HMDA的抗拉强度高达3.7MPa).
- 与脂肪酸 (-1.4 °C) 相比,观察到氨基硬化剂的玻璃化过渡温度更高 (16.0 °C为HMDA,12.4 °C为BHMT).
- 精油酸固化样品的热稳定性 (385°C最快的质量损失) 比氨酸固化样品 (450-470°C) 低,尽管HMDA样品具有显著的固化蒸发损失.
结论:
- 氨基交叉连接器 (HMDA,BHMT) 显著提高了基于ELO的热的机械和热性能.
- 脂酸具有不同的特性,但具有较低的热稳定性和机械强度.
- 需要进一步的研究,以优化固化条件和交叉链接化学,以改善生物基热应用.
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