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十八烷@聚甲基丙烯酸甲酯微胶囊相变材料的制备及表征

申晋琛 林明贵 马中义 贾丽涛 李德宝

申晋琛, 林明贵, 马中义, 贾丽涛, 李德宝. 十八烷@聚甲基丙烯酸甲酯微胶囊相变材料的制备及表征[J]. 燃料化学学报. doi: 10.19906/j.cnki.JFCT.2022056
引用本文: 申晋琛, 林明贵, 马中义, 贾丽涛, 李德宝. 十八烷@聚甲基丙烯酸甲酯微胶囊相变材料的制备及表征[J]. 燃料化学学报. doi: 10.19906/j.cnki.JFCT.2022056
SHEN Jin-chen, LIN Ming-gui, MA Zhong-yi, JIA Li-tao, LI De-bao. Preparation and characterization of Oct@PMMA microcapsules phase change materials[J]. Journal of Fuel Chemistry and Technology. doi: 10.19906/j.cnki.JFCT.2022056
Citation: SHEN Jin-chen, LIN Ming-gui, MA Zhong-yi, JIA Li-tao, LI De-bao. Preparation and characterization of Oct@PMMA microcapsules phase change materials[J]. Journal of Fuel Chemistry and Technology. doi: 10.19906/j.cnki.JFCT.2022056

十八烷@聚甲基丙烯酸甲酯微胶囊相变材料的制备及表征

doi: 10.19906/j.cnki.JFCT.2022056
基金项目: 中央引导地方科技发展资金(YDZJSX2021C041)资助
详细信息
    通讯作者:

    Tel: 0351-4121793, E-mail:mazhgyi@sxicc.ac.cn

    dbli@sxicc.ac.cn

  • 中图分类号: O643

Preparation and characterization of Oct@PMMA microcapsules phase change materials

Funds: The project was supported by the central government guides local science and technology development funds, (YDZJSX2021C041)
  • 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 ℃。
  • 图  1  Oct@PMMA微胶囊合成机制示意图

    Figure  1  Scheme of formation mechanism for Oct@PMMA MePCMs

    图  2  SDS(a)与PVP(b)的化学结构式

    Figure  2  Chemical structure of SDS (a) and PVP (b)

    图  3  十八烷、聚甲基丙烯酸甲酯与微胶囊的FT-IR谱图

    Figure  3  FT-IR spectra of Oct, PMMA and MEPCMs

    图  4  Oct(a)与微胶囊(b-g)的XRD谱图

    Figure  4  XRD patterns of Oct (a) and MePCMs (b-g)

    图  5  微胶囊的SEM照片

    Figure  5  SEM micrographs (a): MePCMs-SDS; (b): MePCMs-1; (c): MePCMs-3; (d): MePCMs-5; (e-h): magnified MePCMs

    图  6  微胶囊粒径分布

    Figure  6  Particle size distribution of MePCMs

    图  7  (a):DSC熔融曲线;(b):DSC结晶曲线;(c):相变焓值、包覆率、包覆效率和热储存能力;(d):收率

    Figure  7  (a): DSC Heating curves; (b): DSC cooling curves; (c): phase change enthalpies, R, E and C; (d): Y

    图  8  Oct与微胶囊热重曲线

    Figure  8  TG curves of Oct and MePCMs

    图  9  (a):不同MMA:PETRA微胶囊热重曲线;(b):MePCM-6-2的相变循环曲线;(c):MePCM-6-2的相变焓值

    Figure  9  (a): TG curves of MePCMs at different mass ratio of MMA to PETRA; (b): Phase change cycle of MePCM-6-2; (c): Phase change enthalpy of MePCM-6-2

    表  1  微胶囊制备配方

    Table  1  Formulations for the preparation of MePCMs

    Samplem/g
    OctMMAPETRASDSPVPKPS
    MePCMs-SDS86.51.50.800.8
    MePCM-186.51.50.70.10.8
    MePCM-286.51.50.60.20.8
    MePCM-386.51.50.50.30.8
    MePCM-486.51.50.40.40.8
    MePCM-586.51.50.30.50.8
    下载: 导出CSV

    表  2  微胶囊热力学性质

    Table  2  Thermal properties of MePCMs

    SampleMelting processCrystallization process
    tm/℃ΔHm/(J·g−1tc/℃ΔHc/(J·g−1
    MePCM-SDS21.490.7218.984.09
    MePCM-121.797.9119.088.87
    MePCM-222.3105.619.2101.1
    MePCM-321.789.8519.382.42
    MePCM-421.484.7518.576.23
    MePCM-520.757.919.850.94
    Octadecane24.4223.224.1222.6
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-02-22
  • 录用日期:  2022-04-02
  • 修回日期:  2022-04-01
  • 网络出版日期:  2022-07-11

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