用于地热能量储存的光交联聚乙烯管道的表征
Giulia Simão de Sousa1,2, Andrew Root3, Ivo Heinmaa4
1Swedish Centre for Resource Recovery, Faculty of Textiles, Engineering and Business, University of Borås, 501 90 Boras, Sweden.
ACS omega
|January 20, 2025
概括
光启动交联聚乙烯 (PEX-e) 管道显示出对高温能量存储的前景. 然而,PEX-e2的交叉链分散不太均,影响了其机械性能.
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
- 储能 储能 储能 储能 储能 储能
背景情况:
- 交联聚乙烯 (PEX) 是高温应用的候选物.
- 新型的照片启动交叉链接 (PEX-e) 提供了潜在的优势.
- 了解PEX-e的特性对于钻井热能储能系统至关重要.
研究的目的:
- 研究新型PEX-e管道的形态学和热力学特性.
- 将PEX-e配方与传统的PEX-a和PE100管道进行比较.
- 评估PEX-e对于高温钻孔热能储存的适用性.
主要方法:
- 凝含量对交叉连接的程度.
- 动态机械分析 (DMA) 交叉链密度和分子量.
- H静态核磁共振 (NMR) 用于相位组成和分子运动.
- 差分扫描热量计 (DSC) 用于测量热行为.
- 福里埃变换红外光谱 (FTIR),氧化诱导时间 (OIT) 和氧化稳定性的热重力测量分析 (TGA).
主要成果:
- 两种PEX-e配方都实现了适当的交叉链接和高OIT值.
- PEX-e2显示了不均的交叉链接分布,导致存储模块减少.
- 在交叉链接过程中,FTIR检测到PEX-e1中的氧化副产品.
结论:
- PEX-e 管道显示出用于高温储能应用的潜力.
- 交叉链路分布显著影响PEX-e的热力学性能.
- 进一步优化PEX-e配方和加工是必要的,以减轻氧化和改善性能.
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