基于响应面优化的石蜡相变微胶囊的性能评价

doi:10.11896/cldb.19010192

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Abstract Response surface methodology (RSM) was used to optimize the preparation parameters of paraffin microcapsules and the prediction model was established to determine the optimal process conditions. Scanning electron microscopy (SEM), differential calorimetry (DSC), thermal conductivity tester and thermogravimetric analyzer (TG) were used to optimize the morphology, chemical structure, coating properties, thermal properties and stability of paraffin phase change microcapsules prepared under the optimized process conditions. The results showed that the microcapsules were spherical, smooth and slightly adhered. The encapsulation performance was good and the content of core material was 75.77wt%. The latent heat of microcapsules was 105.93 J/g and the thermal conductivity was 0.152 6 W/(m·K). The thermal decomposition temperature of microcapsules was increased to over 300 ℃.The volume of microcapsules remained unchanged when the temperature of microcapsules was raised to above the melting point. It demonstrated that microencapsulation could significantly enhance thermal stability and volume stability of paraffin.

Key words： paraffin phase change microcapsule performance evaluation in-situ polymerization response surface optimization

Published: 28 October 2019

CLC number:

TQ323

Fund:This work was financially supported by National Key R & D Program of China (2016YFD06007013), Special Funds for Basic Research Business Fees of Central Universities of Beijing Forestry University (2017JC12).

About author:: Zhe Zhang, a postgraduate of Beijing Forestry University, mainly engaged in phase change microcapsule research;Jian Fang, associate professor of Beijing Forestry University, mainly engaged in functional packaging mate-rials, including starch, cellulose, chitosan, PVA and other degradable packaging materials and phase change microcapsules. She presided over and participated in 9 teaching research projects, including one award for evaluating school-level teaching achievements, five papers on teaching reform, and more than 10 innovative plans for college students. She presided over and parti-cipated in 9 scientific research projects, such as the national key R & D plan, published more than 20 scientific research papers, obtained one autho-rized invention patent, one utility model patent, one editor-in-chief and one parti-cipating work.

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	ZHANG Zhe
	FANG Jian
	XI Limin

Cite this article:

ZHANG Zhe,FANG Jian,XI Limin. Performance Evaluation of Paraffin Phase Change Microcapsules Based on Response Surface Methodology[J]. Materials Reports, 2019, 33(24): 4181-4187.

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http://www.mater-rep.com/EN/10.11896/cldb.19010192 OR http://www.mater-rep.com/EN/Y2019/V33/I24/4181

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