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针对耐火应用的先进固体地质聚合物配方
Shaik Hussain1, Sudhir Amritphale1, John Matthews1
1Trenchless Technology Center, Louisiana Tech University, Ruston, LA 71272, USA.
Materials (Basel, Switzerland)
|March 28, 2024
概括
先进的固体地质聚合物配方表现出异常高温性能,在暴露于1100°C后保持显著的机械强度. 这些水激活材料对要求苛刻的耐火材料应用有很大的前景.
科学领域:
- 材料科学 材料科学 材料科学
- 陶工程 陶工程 陶工程
- 地质聚合物化学 地质聚合物化学
背景情况:
- 传统水泥在高温应用中由于热降解和裂变而表现出局限性.
- 耐火材料需要在极端条件下提高机械稳定性和耐火性.
研究的目的:
- 评估用于耐火应用的新型固体地质聚合物配方的高温性能.
- 为了比较水激活固体地质聚合物的特性与传统的液态性地质聚合物.
主要方法:
- 使用飞灰作为前体和氧化/酸盐作为激活剂的研究地质聚合物配方.
- 作为地质聚合物矩阵中的耐火聚合物,纳入了聚石和.
- 测试了高达1100°C的压力强度,并对样品进行了热循环 (1100°C).
主要成果:
- 固体地质聚合物配方与和聚合物保持了84 MPa和64 MPa的压力强度后-1100 °C.
- 在四个热循环后,基于穆莱特的地质聚合物达到115.2 MPa;证明了耐疲劳性.
- 观察到600°C时强度的降低 (粘性烧结),随后在1100°C时强度的增加 (相变).
结论:
- 先进的固体地质聚合物配方与传统材料相比,具有优越的耐火性能.
- 在高温下形成的晶体相 (leucite,sanidine,annite) 有助于提高机械强度.
- 用水激活的固体地质聚合物代表了对高温耐火材料应用的有希望的替代品.
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