可持续的聚乳酸和聚酸 (PLA/PHB) 混合物的阻燃性
M Kervran1, M Shabanian2, C Vagner1
1Université de Lorraine, CentraleSupélec, LMOPS, F-57000 Metz, France.
International journal of biological macromolecules
|August 11, 2023
概括
一种新的基于胺的阻燃剂 (FR) 已被开发用于聚乳酸/聚乙酸 (PLA/PHB) 混合物. 这种FR显著降低了可燃性,降低了峰值热释放率,并促进了燃烧,提高了消防安全.
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
- 消防安全工程 消防安全工程
背景情况:
- 越来越多的人对来自可再生资源的可持续,生物基和可生物降解聚合物感兴趣.
- 聚基酸 (PHB) 和聚乳酸 (PLA) 是从可持续来源获得的关键生物聚合物.
- 在生物聚合物应用中需要提高消防安全.
研究的目的:
- 在PLA/PHB混合物中评估一种新的基于胺的阻燃剂 (FR) 的阻燃效果.
- 研究新FR与聚酸盐 (APP) 和 sepiolite 的组合.
- 用先进的热量计分析PLA/PHB复合材料的火灾行为.
主要方法:
- 使用微化合物制备PLA/PHB混合物,其中含有20%的FR配方.
- 使用热解燃烧流热量计 (PCFC) 进行可燃性评估.
- 圆热量计分析以研究火灾行为和烧焦.
主要成果:
- 所有经过测试的FR配方均显示可燃性降低.
- 新的FR降低了33%的峰值热释放率 (pHRR).
- 与APP和 sepiolite的组合将pHRR降低约60%,并将残留物从0%增加到14.7%.
结论:
- 基于胺的新型FR系统显著改善了PLA/PHB混合物的防火性能.
- 该FR促进从薄火焰过渡到厚炭化行为.
- 这项研究为增强火阻复性的PLA/PHB复合材料提供了第一个圆热量计数据.
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