脂肪类复合相变储能材料中脂肪酸最佳质量含量的确定方法

doi:10.11949/0438-1157.20201525

化工学报 ›› 2021, Vol. 72 ›› Issue (S1): 560-566.DOI: 10.11949/0438-1157.20201525

• 材料化学工程与纳米技术 • 上一篇

脂肪类复合相变储能材料中脂肪酸最佳质量含量的确定方法

周东一^1,^2,³(),肖湘华¹,肖飚^1,³,刘益才²()

^1.邵阳学院机械与能源工程学院，湖南邵阳 422000
^2.中南大学能源科学与工程学院，湖南长沙 410083
^3.湖南省高效动力系统与智能制造重点实验室，湖南邵阳 422000

收稿日期:2020-10-30 修回日期:2021-01-22 出版日期:2021-06-20 发布日期:2021-06-20
通讯作者: 刘益才
作者简介:周东一（1974—），男，硕士，教授，zhoudongyi2005@163.com
基金资助:
湖南省重点研发计划项目(2018GK2074);湖南省自然科学基金项目(2018JJ2366);湖南省高校创新平台开放基金项目(18K097);国家自然科学基金项目(51776226)

Method of determining optimum mass ratio of fatty acids in composite phase change materials for thermal energy storage

ZHOU Dongyi^1,^2,³(),XIAO Xianghua¹,XIAO Biao^1,³,LIU Yicai²()

^1.School of Mechanical and Energy Engineering, Shaoyang University, Shaoyang 422000, Hunan, China
^2.School of Energy Science and Engineering, Central South University, Changsha 410083, Hunan, China
^3.Key Laboratory of Hunan Province for Efficient Power System and Intelligent Manufacturing, Shaoyang 422000, Hunan, China

Received:2020-10-30 Revised:2021-01-22 Online:2021-06-20 Published:2021-06-20
Contact: LIU Yicai

摘要/Abstract

摘要：

为确定脂肪类复合相变储能材料中脂肪酸最佳质量含量，比较了目测逼近法、称重测量法和渗透直径百分比判定法3种方法，并以确定癸酸-肉豆蔻酸/膨胀石墨（CA-MA/EG）复合相变材料中癸酸-肉豆蔻酸的最佳质量含量为例，阐述了3种方法的使用及其特点。结果表明：目测逼近法操作简单，主要依靠经验与主观判断；渗透质量百分比判定法操作略显复杂，但科学严谨、结果精确；渗透直径百分比判定法可根据实际情况灵活设置判定标准，判定结果能准确反映复合相变材料的稳定性。

关键词: 脂肪酸, 复合材料, 制备, 最佳质量含量, 显微结构

Abstract:

In order to obtain a satisfactory gating property of the membrane, the grafting yield must be kept in a proper range. In order to determine the optimal mass ratio of fatty acids in fatty acids composite phase change energy storage materials, three methods were proposed, the visual approaching method, the weighing measurement method and the percentage determination of penetration diameter method. And taking capric-myristic acid/expanded graphite (CA-MA/EG) composite phase change material for example, the optimum mass ratio of CA-MA in CA-MA/EG was determined by three methods. The results showed that the visual approximation method is easy to operate and mainly depends on experience and subjective judgment; the weighing measurement method is precise, but it is more complex; the determination standard can be set flexibly on the basis of the facts, and the results can accurately reflect the stability of composite phase change materials by the percentage determination of penetration diameter method.

Key words: fatty acids, composites, preparation, the optimal mass ratio, microstructure

中图分类号:

TK 02

周东一, 肖湘华, 肖飚, 刘益才. 脂肪类复合相变储能材料中脂肪酸最佳质量含量的确定方法[J]. 化工学报, 2021, 72(S1): 560-566.

ZHOU Dongyi, XIAO Xianghua, XIAO Biao, LIU Yicai. Method of determining optimum mass ratio of fatty acids in composite phase change materials for thermal energy storage[J]. CIESC Journal, 2021, 72(S1): 560-566.

图/表 7

参考文献 30

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CA-MA质量含量/%	热处理前质量/g	热处理后质量/g	渗透百分比/%
90	0.5	0.498	0.5
91	0.5	0.498	0.5
92	0.5	0.498	0.5
92.2	0.5	0.498	0.5
92.4	0.5	0.495	1.0
92.6	0.5	0.493	1.4
92.8	0.5	0.488	2.5
93	0.5	0.474	5.2
94	0.5	0.418	16.5
95	0.5	0.357	28.6

CA-MA质量含量/%	热处理前质量/g	热处理后质量/g	渗透百分比/%
90	0.5	0.498	0.5
91	0.5	0.498	0.5
92	0.5	0.498	0.5
92.2	0.5	0.498	0.5
92.4	0.5	0.495	1.0
92.6	0.5	0.493	1.4
92.8	0.5	0.488	2.5
93	0.5	0.474	5.2
94	0.5	0.418	16.5
95	0.5	0.357	28.6

渗出情况	渗出百分比	稳定性
不渗出	Φ≤0	非常稳定
渗出极少（可视为不渗出）	0<Φ≤5%	稳定
微量渗出	5%<Φ≤15%	基本稳定
少量渗出	15%<Φ≤30%	基本不稳定
中量渗出	30%<Φ≤50%	不稳定
大量渗出	Φ>50%	非常不稳定

渗出情况	渗出百分比	稳定性
不渗出	Φ≤0	非常稳定
渗出极少（可视为不渗出）	0<Φ≤5%	稳定
微量渗出	5%<Φ≤15%	基本稳定
少量渗出	15%<Φ≤30%	基本不稳定
中量渗出	30%<Φ≤50%	不稳定
大量渗出	Φ>50%	非常不稳定

MA质量含量/%	渗出圈平均直径/mm	渗出百分比Φ/%	判断标准	判断结果
90	—	—	Φ≤0	非常稳定
91	—	—	Φ≤0	非常稳定
92	—	—	Φ≤0	非常稳定
92.2	—	—	Φ≤0	非常稳定
92.4	—	—	Φ≤0	非常稳定
92.6	31.2	4.0	0<Φ≤5%	稳定
92.8	32.5	8.3	5%<Φ≤15%	基本稳定
93	36.2	20.6	15%<Φ≤30%	基本不稳定
94	42.3	41.0	30%<Φ≤50%	不稳定
95	76.8	156.0	Φ>50%	非常不稳定

脂肪类复合相变储能材料中脂肪酸最佳质量含量的确定方法

Method of determining optimum mass ratio of fatty acids in composite phase change materials for thermal energy storage

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