制备和表征微封装相变材料,以提高冷藏室热性能,用于冷藏室
Yang Wang1, Yunchuan Xu1, Haojie Zhao1
1College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China.
Materials (Basel, Switzerland)
|May 14, 2025
概括
研究人员开发了先进的微封装相变材料 (MPCM),用于有效的低温冷藏. 使用二元核心系统的优化MPCM为冷链应用提供了增强的热能存储.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 热力工程是热力工程中的一个.
背景情况:
- 有效的热能存储对于低温应用,如冷链物流和疫苗制冷至关重要.
- 微封装相变材料 (MPCMs) 提供了一个有前途的解决方案,因为它们的高能量密度和可调节的相变温度.
- 开发具有高度,稳定的微观结构和合适的过渡温度的MPCM仍然是一个关键挑战.
研究的目的:
- 开发针对低温冷藏应用优化的新型微封装相变材料 (MPCM).
- 研究乳化剂类型和超声波乳化参数对MPCM特性的影响.
- 通过使用二元核心系统来增强MPCM的热储容量和微观结构稳定性.
主要方法:
- 合成使用1-decanol作为核心和甲基甲基酸盐作为外前体的MPCMs.
- 对各种类型的乳化剂的研究,重点是烯-烯无水化合聚合物.
- 优化超声波乳化条件 (乳化剂度,功率,时间).
- 通过结合1-decanol和1-tetradecane来制备和表征双核MPCM.
主要成果:
- styrene-maleic无水化共聚合物有效地产生了具有高度和均微观结构的MPCM.
- 最佳的乳化条件 (5%重量乳化剂,375W,12分钟) 产生了MPCM,其相变度为126.7kJ/kg.
- 一个双核MPCM (1-decanol/1-tetradecane,51.1:48.9摩尔比) 显示出显著更高的储存 (144.3 kJ/kg,增加13.9%).
- 双核系统表现出改善的微观结构统一性和适合低温存储的相变温度.
结论:
- 优化的MPCM,特别是二元核心配方,在低温冷库中表现出极好的热性能.
- 开发的MPCM为冷链物流和疫苗制冷提供了实用和创新的技术解决方案.
- 对二元核心MPCM的进一步研究可以导致先进的热管理系统.
相关概念视频
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01:27Frost Action on Concrete
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01:29Frost Resistant Concrete
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