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从生物基聚二醇中间体到高性能聚氨弹性体:热稳定性,再加工性和阻燃性

Ning Ding¹, Yi Yang¹, Binbao Lu¹

¹The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China.

Journal of colloid and interface science

|November 12, 2024

概括

一种新的生物基阻燃剂,烯基衍生聚二醇 (VDP),被合成并纳入聚氨. 这显著提高了阻燃性,并保持了出色的机械性能和再加工能力.

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
阻燃技术阻燃技术阻燃技术

背景情况:

聚氨弹性体通常需要提高阻燃性,用于各种应用.
开发可持续和有效的阻燃剂是材料科学中的一个关键挑战.

研究的目的:

合成一种新的生物基聚二醇中间体 (VDP),用于增强聚氨中阻燃性.
研究VDP结合对聚氨弹性质的阻燃性能,热稳定性和机械性能的影响.

主要方法:

通过使用香草素,4,4'二氨基二甲 (DDM) 和9,10-二-9--10-酸-10-氧化物 (DOPO) 的阿尔迪明凝聚和添加反应合成VDP.
在不同度的聚氨骨干中对VDP的共价结合.
使用限制氧气指数 (LOI) 和UL-94垂直燃烧试验评估阻燃性.
通过测量分解激活能量 (Eα) 来分析热稳定性.
评估机械性能,反弹弹性和再加工能力.

主要成果:

加入VDP显著提高了阻燃性,将LOI从23%提高到30%,并在UL-94测试中获得V-0等级.
火焰阻燃性增强是由于在燃烧过程中进行的激素清除 (PO·,PO·) 和非易燃气体释放.
纳入VDP使分解激活能量 (Eα) 从109.3增加到227.6KJ/mol,由于硬结构,增强了热稳定性.
经过多次重塑和溶剂造循环后,改性弹性体保留了98.6%的原始机械性能,显示出出色的再加工能力.

结论:

这种新的生物基VDP是聚氨弹性体的有效阻燃剂.
在不影响机械性能或再加工能力的情况下,VDP提高了阻燃性和热稳定性.
这项研究为开发可持续的高性能阻燃聚合物提供了一个有前途的途径.

关键词:

阻燃性是指阻燃性是指阻燃性.聚氨弹性体的聚氨弹性体可回收的可回收性热稳定性热稳定性瓦尼林是一种

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