增强聚氨气凝的阻燃性能,添加基颗粒
Esther Pinilla-Peñalver1, Óscar Del Fresno1, Darío Cantero1
1Department of Chemical Engineering, University of Castilla-La Mancha, Avda. Camilo José Cela 12, 13071 Ciudad Real, Spain.
Gels (Basel, Switzerland)
|July 26, 2024
概括
这项研究合成了与二氧化 (SiO2) 颗粒合的可再生聚氨 (PUR) 气凝. 最佳的兴奋剂显著提高了热稳定性和阻燃性,显示了高温应用的潜力.
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
- 纳米技术纳米技术
背景情况:
- 聚氨 (PUR) 气凝是先进的材料,在隔热和结构部件中具有潜在的应用.
- 提高PUR气凝的热稳定性和阻燃性对于扩大其在苛刻环境中的使用至关重要.
- 来自可再生能源的 (SiO2) 纳米粒子为材料改造提供了一种可持续的方法.
研究的目的:
- 为了合成和表征聚氨 (PUR) 气凝,添加 (SiO2) 颗粒,从大米中提取.
- 研究不同SiO2含量对PUR气凝的物理化学,热和阻燃性能的影响.
- 评估这些兴奋剂气凝在高温和消防安全应用中的潜力.
主要方法:
- 通过酸性消化从米中合成SiO2纳米颗粒.
- 将SiO2纳米颗粒纳入聚氨 (PUR) 基质中,形成气凝.
- 通过各种分析技术,对气凝特性进行表征,包括热稳定性,阻燃性和物理化学特性.
主要成果:
- 增加SiO2含量 (0.5-3重量%) 提高了PUR气凝的轻度,热稳定性和阻燃性.
- 在2重%的SiO2兴奋剂水平下达到最佳性能,从而使阻燃性增加了多达八倍.
- 用 phytic 酸修改 SiO2 颗粒并没有增强阻燃性.
结论:
- 可再生 (SiO2) 纳米粒子有效地提高了聚氨 (PUR) 气凝的热稳定性和阻燃性.
- 添加PUR/SiO2气凝对于需要耐高温和提高消防安全的应用具有显著的潜力.
- 合成方法和SiO2含量是优化这些先进复合材料性能的关键因素.
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