准备和实验研究青路面的相变材料
Zhuqiang Huang1,2, Jianguo Wei1, Qilin Fu1
1School of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha 410114, China.
Materials (Basel, Switzerland)
|September 9, 2023
概括
研究人员开发了两种相变材料 (PCM),用于控制青路面的温度. 这些封装材料没有泄漏,具有良好的稳定性,并且在加热下有效降低了路面温度,EPWP显示了实际使用的高潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 化学工程是化学工程的重要组成部分.
背景情况:
- 由于高温波动,青路面面临着重大挑战.
- 有效的温度控制材料对于路面的耐用性和性能至关重要.
- 变相材料 (PCM) 为热调节提供了一个有前途的解决方案.
研究的目的:
- 开发和评估用于高温青路面应用的新型封装相变材料 (PCM).
- 评估合成PCM的热稳定性,性能和温度控制能力.
- 确定这些PCM对于提高青路面弹性的适用性.
主要方法:
- 使用酸蚀刻陶岩 (AECS) 载体合成封装的抛物线颗粒 (EPWP) 和封装的神秘酸颗粒 (EMAP).
- 通过泄漏测试,板滚动测试和显微镜分析 (SEM,FTIR,XRD,TG-DSC) 进行性能评估.
- 通过储热/释放热的测试和模拟加热下的温度控制实验来评估热性能.
主要成果:
- 无论是EPWP还是EMAP,都表现出极好的热稳定性,没有泄漏和低压缩比.
- 显微镜测试证实了PCM组件的化学稳定性和相相兼容性.
- 在PCM中,高相变度 (EPWP为133.31 J/g,EMAP为138.52 J/g) 和吸附率增加 (AECS为4.61倍).
- 经过PCM修改的青样本显示,与轻度加热的对照样本相比,最大温度显著降低 (降低6.6°C和4.8°C).
结论:
- 开发的封装PCM是稳定的,有效的,适用于高温青路面应用.
- AECS载体显著提高了PCM吸附能力和稳定性.
- EPWP表现出特别强大的适应性和在青路面上进行热管理的实际实施潜力.
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