来自羊毛和大麻纤维的绝热材料的性能评估
Sigitas Vėjelis1, Saulius Vaitkus1, Virgilijus Skulskis2
1Building Materials Institute, Faculty of Civil Engineering, Vilnius Gediminas Technical University, Linkmenų str. 28, LT-08217 Vilnius, Lithuania.
Materials (Basel, Switzerland)
|July 13, 2024
概括
包括羊毛和大麻在内的天然纤维绝缘材料显示出有前途的导热性. 使用疏水剂和阻燃剂的处理显著降低了水的吸收和易燃性.
科学领域:
- 材料科学 材料科学 材料科学
- 可持续建筑材料 可持续建筑材料
背景情况:
- 像羊毛和工业大麻这样的天然纤维越来越多地被用于隔热.
- 传统的绝缘材料往往会对环境产生不利影响.
- 开发有效的基于天然纤维的绝缘材料需要了解性能特性和潜在的改进.
研究的目的:
- 评估基于天然纤维的隔热材料的性能特性.
- 研究纤维成分 (羊毛,大麻) 和粘合剂 (聚胺) 对材料性能的影响.
- 评估疏水剂和阻燃剂在提高绝缘性能方面的有效性.
主要方法:
- 三种天然纤维成分的制备:纯羊毛 (SW),羊毛/工业大麻 (SW/HF) 和纯工业大麻 (HF) 与聚酸 (PLA) 结合剂.
- 确定导热性,抗拉强度,短期吸水能力和易燃性.
- 使用疏水剂和阻燃剂来减少水的吸收和易燃性.
- 实验结果的统计处理.
主要成果:
- 导热率在0.0333到0.0438W/m·K之间.
- 拉力强度从2.5到130kPa不等.
- 短期吸水量在0.5至8.5kg/m2之间.
- 水蒸气扩散阻力系数在2.537至2.667.7之间.
- 所有测试的材料都被发现易燃.
- 疏水剂和阻燃剂显著降低了水的吸收和易燃性.
结论:
- 天然纤维复合材料,特别是SW / HF混合物,提供具有竞争力的绝热性能.
- 天然纤维绝缘材料的易燃性可以通过适当的处理来有效地管理.
- 用疏水剂和阻燃剂进行表面处理对于提高自然纤维绝缘材料的安全性和耐用性至关重要.
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