基于聚氨复合材料的煤炭固体废物高价值和环保回收方法
1College of Materials Science & Engineering, Taiyuan University of Technology, Taiyuan 030024, China.
Polymers
|July 27, 2024
概括
这项研究开发了改性飞灰/聚氨 (MFA/PU) 和改性煤粉/聚氨 (MCG/PU) 复合材料. MFA/PU复合材料显示出优越的压力强度和阻燃性,提供了安全的回收策略.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 基于煤炭的固体废物,如飞灰和煤炭,面临着处置的挑战.
- 开发这些废物的高价值应用对于环境可持续性至关重要.
- 聚氨复合材料为废物整合提供了多功能材料特性.
研究的目的:
- 使用改性飞灰 (MFA) 和改性煤粉 (MCG) 与聚氨 (PU) 制造新型复合材料.
- 评估这些MFA/PU和MCG/PU复合材料的机械性能,阻燃性和环境安全性.
- 建立一个高价值和环保的应用煤炭固体废物.
主要方法:
- 制备MFA/PU和MCG/PU复合材料,填充剂含量不同 (10-40%).
- 机械测试 (压力强度) 和阻燃性分析 (限制氧指数,圆热量计).
- 微观结构分析使用扫描电子显微镜 (SEM) 和重金属出水质测试.
主要成果:
- 含有30%填充剂的复合材料表现出最佳的性能:MFA/PU (84.1 MPa压力强度,29% LOI) 和MCG/PU (46.3 MPa压力强度,23.5%LOI).
- SEM分析表明,与增加的填充剂含量相比,接口兼容性有所改善.
- 两种复合材料都表现出凝结相阻燃性,MCG/PU形成了一个更稳定的屏障层;没有检测到重金属漏.
结论:
- 修改后的飞灰和煤炭粉可以有效地用于聚氨复合材料.
- 与MCG/PU相比,MFA/PU复合材料提供了优越的机械和阻燃性能.
- 这项研究提出了一个可行的策略,用于安全和高价值的煤炭固体废物回收成功能性材料.
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