生物基PLA/PEG/g-C3的制备和表征N4低温复合材料相变储能材料
Liu Feng1, Junjie Ding1, Hengming Hu1
1School of Materials Science and Engineering, Nanjing Institute of Technology, Nanjing 211167, China.
Polymers
|July 14, 2023
概括
这项研究开发了一种新的基于生物的复合相变材料 (CPCM),使用聚乙烯糖醇 (PEG),聚乳酸 (PLA) 和g-C3N4进行可持续的能量存储. 该材料表现出卓越的热性能和稳定性,可用于太阳能热发电,运输和建筑领域的应用.
科学领域:
- 材料科学 材料科学 材料科学
- 可持续能源 可持续能源
背景情况:
- 越来越多的能源和环境问题需要可持续的发展途径.
- 生物基聚合物相变材料为能源存储挑战提供了有前途的解决方案.
研究的目的:
- 合成和描述一个完全可降解的复合相变能量储存材料 (CPCM).
- 评估新型CPCM对潜在应用的兼容性,机械和热性能.
主要方法:
- 聚乙烯甘醇 (PEG20000) / 聚乳酸 (PLA) / g-C3N4 CPCM的封闭合成.
- 使用FTIR,SEM,XRD,纳米印记,DSC,LFA和TG进行表征.
- 优化材料组成,以达到所需的性能.
主要成果:
- CPCM表现出良好的物理混合,在PLA:PEG:g-C3N4比率为6:3:1:1的最佳一致性.
- 添加PEG降低了PLA硬度,最大硬度在6:3:1:1时达到0.137 GPa.
- 高潜能 (106.1kJ/kg内热,80.05kJ/kg外热) 在3:6:1观察到.
- 实现了增强的导热率 (0.30-0.32 W/(m·K)) 和高达250°C的稳定性.
结论:
- 开发的CPCM是一种完全可降解的生物基材料,具有出色的热能储能能力.
- 该材料可调节的机械和热性能使其适用于各种应用.
- 潜在的应用包括太阳能热能发电,运输和建筑施工.
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