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林业科学 ›› 2012, Vol. 48 ›› Issue (9): 120-126.doi: 10.11707/j.1001-7488.20120919

• 论文 • 上一篇    下一篇

聚乙二醇木材复合相变储能材料的制备及表征

谢成1, 刘志明1, 吴鹏1, 王海英2, 孟围2   

  1. 1. 东北林业大学材料科学与工程学院 生物质材料科学与技术教育部重点实验室 哈尔滨 150040;2. 东北林业大学林学院 哈尔滨 150040
  • 收稿日期:2011-10-21 修回日期:2012-02-26 出版日期:2012-09-25 发布日期:2012-09-25
  • 通讯作者: 刘志明

Preparation and Characterization of Polyethylene Glycol Wood Composite Phase Change Materials

Xie Cheng1, Liu Zhiming1, Wu Peng1, Wang Haiying2, Meng Wei2   

  1. 1. Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education College of Material Science and Engineering, Northeast Forestry University Harbin 150040;2. College of Forestry, Northeast Forestry University Harbin 150040
  • Received:2011-10-21 Revised:2012-02-26 Online:2012-09-25 Published:2012-09-25

摘要:

以木材为骨架,聚乙二醇-10000为相变基元,通过木材的毛细管吸收效应,物理吸附聚乙二醇-10000,制备聚乙二醇木材复合相变储能材料。通过傅里叶变换红外(FTIR)谱图分析官能团,扫描电子显微镜(SEM)分析微观形貌,X射线衍射(XRD)分析结晶度,可知木材与聚乙二醇能很好的相互结合,并且随着聚乙二醇-10000含量的增加,聚乙二醇木材复合相变储能材料结晶度逐渐增加;通过差示扫描量热(DSC)以及热重(TG)分析可知,聚乙二醇木材复合相变储能材料的相变焓先增加后减少,最大相变焓值为43.22 J ·g-1,热稳定性明显增加;聚乙二醇的无水乙醇溶液对木材渗透性的研究表明,木材吸附聚乙二醇主要为抛物线状三段式吸收。

关键词: 杨木, 聚乙二醇, 相变焓, 相变储能材料, 热稳定性

Abstract:

Through capillary adsorption effect of wood with physical adsorption of polyethylene glycol(PEG)-10000, polyethylene glycol wood composite phase change materials(PCM)was prepared with wood as skeleton, and polyethylene glycol-10000(PEG-10000)as phase transformation unit. Functional groups were analyzed by fourier transform infrared(FTIR)spectra, microscopic morphology was analyzed by scanning electron microscopy(SEM)and degree of crystallinity was analyzed by X-ray diffraction(XRD), it is concluded that wood was well combined with PEG and the degree of crystallinity of PCM increased gradually with PEG-10000 content going up. By using differential scanning calorimetry(DSC)and thermogravimetry(TG)analysis, the enthalpy of phase change was first increased and then decreased, the largest phase change enthalpy is 43.22 J ·g-1 and the thermal stability was obviously increased. The study of permeability of PEG ethanol solution to wood shows that PEG adsorption of wood was mainly parabolic three-stage absorption.

Key words: poplar, polyethylene glycol, phase change enthalpy, phase change material, thermal stability

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