蓄冷用二氧化钛-脲醛树脂复合壳层相变微胶囊的制备及性能

黄志国; 孙志高; 沈天锋

doi:10.12465/j.issn.0253-4339.2025.06.123

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蓄冷用二氧化钛-脲醛树脂复合壳层相变微胶囊的制备及性能

更新时间：2025-12-03

- 蓄冷用二氧化钛-脲醛树脂复合壳层相变微胶囊的制备及性能
- Preparation and Performance Study of Titanium Dioxide-Urea-Formaldehyde Resin Composite Shell Phase Change Microcapsules for Cold Storage
- 制冷学报 2025年46卷第6期页码：123-131
- 作者机构：
  
  苏州科技大学环境科学与工程学院　苏州　 215009
- 作者简介：
  
  孙志高，男，博士，教授，苏州科技大学环境科学与工程学院，（0512）63176109，E-mail：szg.yzu@163.com。研究方向：储能与节能技术。
- 基金信息：
- DOI：10.12465/j.issn.0253-4339.2025.06.123
  中图分类号： TB61⁺1;TB64
- 收稿：2024-08-19，
  
  修回：2024-10-30，
  
  录用：2024-11-04，
  
  纸质出版：2025-12-16
- 稿件说明：
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黄志国, 孙志高, 沈天锋. 蓄冷用二氧化钛-脲醛树脂复合壳层相变微胶囊的制备及性能[J]. 制冷学报, 2025,46(6):123-131.

Huang Zhiguo, Sun Zhigao, Shen Tianfeng. Preparation and Performance Study of Titanium Dioxide-Urea-Formaldehyde Resin Composite Shell Phase Change Microcapsules for Cold Storage[J]. Journal of Refrigeration, 2025, 46(6): 123-131.
黄志国, 孙志高, 沈天锋. 蓄冷用二氧化钛-脲醛树脂复合壳层相变微胶囊的制备及性能[J]. 制冷学报, 2025,46(6):123-131. DOI： 10.12465/j.issn.0253-4339.2025.06.123.

Huang Zhiguo, Sun Zhigao, Shen Tianfeng. Preparation and Performance Study of Titanium Dioxide-Urea-Formaldehyde Resin Composite Shell Phase Change Microcapsules for Cold Storage[J]. Journal of Refrigeration, 2025, 46(6): 123-131. DOI： 10.12465/j.issn.0253-4339.2025.06.123.

摘要

结合有机壳层和无机壳层的优点，利用“两步法”制备了二氧化钛-脲醛树脂复合壳层相变微胶囊（TiO

-UF@Tet微胶囊），研究了纳米TiO

对复合壳层相变微胶囊性能的影响。借助生物显微镜、扫描电子显微镜、傅里叶红外光谱仪、能谱分析仪、差示扫描量热仪和热重分析仪等对相变微胶囊的形貌、化学组成和热力学性质进行研

究。结果表明：通过“两步法”制备的微胶囊具有良好的复合壳层结构；随着TiO

添加量的增加，微胶囊的热稳定性不断增强，相变温度向低温方向偏移，相变潜热降低，导热系数增大；制备的微胶囊表面光滑，粒径分布均匀，平均粒径约为2.0 μm；最佳组分相变温度和相变潜热分别为3.1 ℃和168.5 J/g，包覆率和包覆效率分别为71.64%和69.08%；热循环100次后，相变焓趋于稳定，微观形貌良好，适用于空调系统蓄冷。

Abstract

TiO

-UF@Tet microcapsules were prepared using a two-step method in which the advantages of organic and inorganic shell layers were combined. The effect of the mass fraction of TiO

on the performance of the composite-shell phase-change microcapsules was investigated. The morphology

chemical composition

and thermodynamic properties of the phase change microcapsules were investigated using biological microscopy

scanning electron microscopy

Fourier-transform infrared spectroscopy

energy-dispersive spectroscopy

differential scanning calorimetry

and thermogravimetric analysis. The experimental results showed that the microcapsules formed by TiO

and UF using the two-step method had a good composite shell structure. The phase-transition temperature of the microcapsules decreased

the latent heat of the phase transition decreased

and the thermal conductivity increased continuously with an increase in the mass fraction of TiO

. The prepared microcapsules had smooth surfaces

a uniform particle size distribution

and an average particle size of approximately 2.0 μm. The phase transition temperature and latent heat of the optimal composition were 3.1 ℃ and 168.5 J/g

respectively

with a coating rate and coating efficiency of 71.64% and 69.08%

respectively. After 100 heating cycles

the phase-transition temperature remained stable and the microstructure was good. These microcapsules are suitable for cold-storage air conditioning systems.

关键词

Keywords

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