摘要
采用乳液聚合法合成了Oct@PMMA微胶囊相变材料,以聚乙烯吡咯烷酮作为分散剂,季戊四醇四丙烯酸酯作为交联剂改善微胶囊储热性能与热稳定性;采用FT-IR、XRD、DSC和TG等技术对微胶囊的化学和物理性质进行了表征。结果表明,聚乙烯吡咯烷酮通过提高乳液液滴的稳定性和分散程度,提升了微胶囊的热力学性能及收率,相变焓值达到105.6 J/g,收率达到98.01%,季戊四醇四丙烯酸酯改善了微胶囊的热稳定性,热降解温度达到175℃。
Oct@PMMA microcapsules phase change materials were synthesized by the emulsion polymerization method,and the energy storage performance and thermal stability was improved by selecting PVP as dispersing agent and PETRA as cross-liking agent.The chemical and physical properties of the microcapsules were characterized by FT-IR,XRD,DSC and TG.The results showed that the thermal performance and yield were improved by PVP,increasing the stability and dispersibility of emulsion droplets,the enthalpy in phase transition was 105.6 J/g and the yield reached 98.01%,the thermal stability was enhanced by PETRA and the decomposition temperature was up to 175℃.
作者
申晋琛
林明桂
马中义
贾丽涛
李德宝
SHEN Jin-chen;LIN Ming-gui;MA Zhong-yi;JIA Li-tao;LI De-bao(State Key Laboratory of Coal Conversion,Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan 030001,China;University of Chinese Academy of Sciences,Beijing 100049,China;Dalian National Laboratory of Clean Energy,Dalian 116023,China)
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
2022年第11期1511-1516,共6页
Journal of Fuel Chemistry and Technology
基金
中央引导地方科技发展资金(YDZJSX2021C041)资助。
关键词
正构烷烃
乳液聚合法
相变材料
微胶囊
聚乙烯吡咯烷酮
季戊四醇四丙烯酸酯
n-alkanes
emulsion polymerization method
phase change materials
microcapsules
polyvinylpyrrolidone
pentaerythritol tetraacrylate
