Preparation and Thermal Storage Performance Optimization of PA/SEBS Composite-Shaped Phase Change Materials

Tang Su; Zheng Ziao; Wei Hanze; Zheng Chunyuan; Li Bin; Wei Ziqing; Zhai Xiaoqiang

doi:10.12465/j.issn.0253-4339.2025.04.075

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Preparation and Thermal Storage Performance Optimization of PA/SEBS Composite-Shaped Phase Change Materials

更新时间：2025-08-28

- Preparation and Thermal Storage Performance Optimization of PA/SEBS Composite-Shaped Phase Change Materials
- Journal of Refrigeration Vol. 46, Issue 4, Pages: 75-86(2025)
- 作者机构：
  
  1.上海交通大学机械与动力工程学院　上海　200240
  2.美的楼宇科技事业部　佛山　528000
- 作者简介：
  
  Zhai Xiaoqiang, male, professor, School of Mechanical Engineering, Shanghai Jiaotong University, 86-21-34206296, E-mail: xqzhai@sjtu.edu.cn. Research fields: renewable energy conversion, storage and its efficient utilization in buildings, low-carbon intelligent energy system for green buildings, digital intelligence of building energy system.
- 基金信息：
- DOI：10.12465/j.issn.0253-4339.2025.04.075
  CLC： TB332;TK02;O414.13
- Received：19 March 2024，
  
  Revised：18 April 2024，
  
  Accepted：14 May 2024，
  
  Published：16 August 2025
- 稿件说明：
移动端阅览
Tang Su, Zheng Ziao, Wei Hanze, et al. Preparation and Thermal Storage Performance Optimization of PA/SEBS Composite-Shaped Phase Change Materials[J]. Journal of refrigeration, 2025, 46(4): 75-86.
DOI：

Tang Su, Zheng Ziao, Wei Hanze, et al. Preparation and Thermal Storage Performance Optimization of PA/SEBS Composite-Shaped Phase Change Materials[J]. Journal of refrigeration, 2025, 46(4): 75-86. DOI： 10.12465/j.issn.0253-4339.2025.04.075.

摘要

针对固-液相变复合材料因封装复合效应导致蓄热性能低的问题，基于熔融共混法制备了石蜡（PA）/氢化苯乙烯-丁二烯嵌段共聚物（SEBS）复合定型相变材料，通过调控工艺参数设计多孔网状结构，优化了材料蓄热性能。确定了SEBS封装PA的最佳质量配比为2∶8，80%PA/20%SEBS复合材料定型效果良好，质量维持率保持在99%以上。正交试验结果表明：工艺参数对材料的封装性能和蓄热性能影响显著，9组80%PA/20%SEBS样品相变焓的极差高达28 J/g。其中，熔融温度从150 ℃升至200 ℃时，相变焓值提升8%。最终确定了优化的PA/SEBS熔融共混工艺参数：共混时间为2 h、温度为200 ℃、搅拌速率为100 r/min、直接冷却至室温，该制备工艺下的复合材料相变焓值达到161.2 J/g（结晶度为99.3%）。

Abstract

To address the low thermal storage performance of solid-liquid phase change composites caused by the encapsulation composite effect

composite-shaped phase change materials based on paraffin (PA)/hydrogenated styrene-butadiene block copolymer (SEBS) were prepared using the melt-blending method. A porous mesh structure was designed to optimize the thermal storage performance of the materials through the modulation of process parameters. First

the optimal mass ratio of SEBS-encapsulated PA was determined to be 2∶8; at this ratio

the 80% PA/20% SEBS composite material was well-shaped

and the mass retention rate was maintained above 99%. Furthermore

the results of the orthogonal experiments showed that the process parameters significantly affected the encapsulation and thermal storage properties of the materials

and the extreme difference in the enthalpy of phase change of the nine groups of 80% PA/20% SEBS samples was as high as 28 J/g. Among them

the enthalpy of phase change was increased by 8% when the melting temperature was increased from 150 ℃ to 200 ℃. The results of the orthogonal experiments also showed that the phase change enthalpy of the 80% PA/20% SEBS composites increased by 8%. The optimized PA/SEBS melt blending process parameters were finally determined as: blending time of 2 h

temperature of 200 ℃

stirring rate of 100 r/min

and direct cooling to room temperature. Under this preparation process

the phase transition enthalpy of the composites reached 161.2 J/g with 99.3% crystallinity.

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references

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