Preparation of nano-encapsulated phase change materials

方玉堂 匡胜严 张正国 高学农

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Preparation of nano-encapsulated phase change materials

更新时间：2025-12-10

- Preparation of nano-encapsulated phase change materials
- CIESC Journal Issue 3, (2007)
- 作者机构：
  
  华南理工大学传热强化与过程节能教育部重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 March 2007，
  
  Published：05 March 2007
- 稿件说明：
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方玉堂匡胜严张正国高学农. Preparation of nano-encapsulated phase change materials[J]. CIESC Journal, 2007, (3).
DOI：

方玉堂匡胜严张正国高学农. Preparation of nano-encapsulated phase change materials[J]. CIESC Journal, 2007, (3). DOI：

摘要

采用超声波工艺及细乳液原位聚合方法，研制了以聚苯乙烯为囊壁、正十八烷为囊芯的纳米胶囊相变材料；系统探讨了聚合反应各因素对乳胶粒子的形态、胶囊材料热性能的影响。适宜的反应条件为：引发剂AIBN 0.5%（油相质量分数，下同）；链转移剂DDT 0.4%；正十八烷与苯乙烯比为1∶1以及复合乳化剂（SDS和OP-10）总量2%，配比为1∶1。实验结果表明胶囊Z均直径124 nm，相变焓可达124.4 kJ·kg-1。

Abstract

The nano-encapsulated phase change materials (NEPCMs) with polystyrene as shell and n-octadecane as core were synthesized by ultrasonic technique and miniemulsion in-situ polymerization.The influence of various polymerization factors on the morphology and thermal properties of nanocapsules was investigated systematically.The optimal reaction condition was 0.5% AIBN initiator (mass percent of oil phase

the same in the following)

0.4% DDT chain transfer agent

1∶1 n-octadecane /styrene

and 2% total amount of composite surfactants consisting of 1∶1 SDS and OP-10.The results showed that the Z average diameter of capsules was 124 nm and its phase change latent heat was 124.4 kJ·kg-1.

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