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相关概念视频

Design Example: Sustainability in Concrete Building01:26

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As the construction industry moves towards more eco-friendly practices, concrete's adaptability and its ability to incorporate sustainable features make it a key material in the drive towards greener building solutions.
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Fiber-reinforced concrete significantly enhances the structural and nonstructural properties of traditional concrete by incorporating fibers like steel, glass, and polymers. These fibers, varying from natural ones such as sisal and cellulose to manufactured ones like polypropylene and Kevlar, are mixed into hydraulic cement with aggregates. Steel fibers, often preferred for their robustness, contribute to improved ductility, toughness, and post-cracking performance. The concrete is classified...
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相关实验视频

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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.

Xu Li1, Yang Liu1, Mingyi Li1

  • 1College of Materials Science & Engineering, Taiyuan University of Technology, Taiyuan 030024, China.

Polymers
|July 27, 2024
PubMed
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.

关键词:
煤炭团伙 煤炭团伙 煤炭团伙复合材料是一种复合材料.飞行灰飞行灰是什么意思聚氨是一种聚氨.

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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.