生物基奇托-协同剂:在热塑性聚氨中实现高效的阻燃性和烟雾抑制
Sijia Luo1, Shenghe Zhang2, Zhimin Song1
1State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, People's Republic of China.
International journal of biological macromolecules
|October 18, 2025
概括
一种新的生物基阻燃剂,聚酸盐涂上和离子 (APP@CS-Ce),显著提高了热塑性聚氨 (TPU) 的消防安全性. 这种可持续的添加剂可降低易燃性和有毒烟雾,达到UL-94 V-0等级,对机械性能影响最小.
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
- 消防安全工程 消防安全工程
背景情况:
- 热塑性聚氨 (TPU) 具有固有的易燃性,并释放有毒烟雾,造成重大消防安全风险.
- 开发有效和可持续的TPU阻燃剂对于其更广泛的应用至关重要.
研究的目的:
- 开发一种新的,基于生物的TPU阻燃剂,使用聚酸盐 (APP),酸盐 (CS) 和离子 (Ce3+).
- 评估包含新阻燃剂的TPU复合材料的阻燃性,烟雾抑制和机械性能.
主要方法:
- 采用静电自组装来创建一个核心结构 (APP@CS-Ce) 使用生物质衍生基.
- APP@CS-Ce阻燃剂被纳入TPU复合材料中,负载为15%的重量.
- 使用UL-94测试,限制氧指数 (LOI),圆热量计 (测量峰值热释放率 - PHRR和总烟雾产量 - TSP),以及燃烧产品分析 (包括CO排放) 来评估消防安全性能.
- 评估了机械性能,特别是破裂时的延长,以评估材料的完整性.
主要成果:
- 经过APP@CS-Ce修改的TPU获得了UL-94 V-0评级和27.6%的LOI.
- 煤炭残留物显著增加,从0.5%的重量%增加到24%的重量%,而PHRR和TSP分别减少了76%和61%.
- 碳排放量减少了45%,这表明有效抑制毒性,离子促进了煤炭石墨化和CO-to-CO2转化.
- 机械完整性得到维持,破裂时的延伸只减少了0.5%.
结论:
- 这种新的生物基阻燃剂APP@CS-Ce提供了一种可持续的高性能解决方案,用于提高TPU的消防安全性.
- 酸盐和离子的协同作用提供了高效的阻燃性,烟雾抑制和毒性降低.
- 这种方法保留了TPU的机械性能,使其适用于需要严格的消防安全标准的先进应用.
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