化工新型材料

化工新型材料 ›› 2023, Vol. 51 ›› Issue (4) : 275-280. DOI: 10.19817/j.cnki.issn1006-3536.2023.04.049

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不同支撑材料/PEG-1500复合相变材料的制备及热性能研究

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Study on preparation and thermal property of different support materials/PEG-1500 composite phase change materials

Xu Zhong^1,2,3, Wu Enhui^1,2,3, Hou Jing^1,2,3, Li Jun^2,3, Zan Xueping¹

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文章历史 +

Received		Published
2021-10-27		2023-04-20
Issue Date	Revised Date
2023-04-27	2021-10-27

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摘要

以氮化硼(BN)、碳化硼(B₄C)、海泡石(SEP)、凹凸棒(ATP)、活性炭(AC)、多壁碳纳米管(MWCNT)和膨胀石墨(EG)作为支撑材料,聚乙二醇(PEG)作为相变主材,采用熔融共混法制备了PCM1—PCM7这7种成型复合相变材料。并对材料稳定性、升温速率和瞬态热导率进行测试。结果表明:PEG中添加7种支撑材料的最佳质量分数在7%～78%之间;材料泄漏率会随加热时间和温度增加而增大,线性拟合表明材料的泄漏率与加热时间存在一定线性关系(R²大于0.93);7种材料光-热转换时泄漏率在0.12%～1.13%;复合相变材料热导率比纯PEG提高了11.5%～620.0%之间。

Abstract

Boron nitride (BN),boron carbide (B₄C),sepiolite (SEP),attapulgite (ATP),activated carbon (AC),multi-walled carbon nanotubes (MWCNT) and expanded graphite (EG) were used as support materials,and polyethylene glycol (PEG) as the main phase change materials to prepare seven composite phase change materials (PCM1-PCM7) by melt-blending method.The stability,heating rate and transient thermal conductivity of materials were tested.The results showed that the optimal mass fraction of seven supporting materials added to PEG was between 7% and 78%.The material leakage rate increased with the increase of heating time and temperature.Linear fitting revealed that there was a certain linear relationship between the leakage rate of the material and the heating time (R²>0.93).The leakage rates of the seven materials were between 0.12% and 1.13% during the photo-thermal conversion.The thermal conductivity of composite phase change materials increased by 11.5%～620.0% compared with that of pure PEG.

关键词

成型复合相变材料 / 泄漏率 / 热稳定性 / 光-热转换 / 热导率

Key words

forming composite phase change materials / leakage rate / thermal stability / light-to-thermal conversion / thermal conductivity

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不同支撑材料/PEG-1500复合相变材料的制备及热性能研究[J]. 化工新型材料, 2023, 51(4): 275-280 DOI:10.19817/j.cnki.issn1006-3536.2023.04.049

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