科学研究

十二酸-十四酸二元复合相变材料的制备及性能研究

展开
  • 苏州科技大学环境科学与工程学院,苏州215009
徐沣(1996-),男,硕士研究生,主要研究方向为储能材料与技术,E-mail:591176243@qq.com。

收稿日期: 2020-07-27

  修回日期: 2021-07-09

  网络出版日期: 2021-12-13

基金资助

江苏省高校自然科学研究重大项目(16KJA480001);苏州市住建局科技计划项目(2020-006)

Preparation and property of lauric acid-myristic acid binary composite phase change material

Expand
  • School of Environment Science and Engineering,Suzhou University of Science and Technology,Suzhou 215009

Received date: 2020-07-27

  Revised date: 2021-07-09

  Online published: 2021-12-13

摘要

以十二酸(LA)和十四酸(MA)为原料,采用熔融共混法制备了一种LA-MA二元共晶相变材料。利用步冷曲线确定了质量分数对LA-MA混合物结晶温度的影响,通过绘制混合体系相图获得共晶点,LA-MA二元混合物共晶体系的质量比为3:1,共晶温度为32.7℃,LA-MA二元共晶体系相变潜热为160.5J/g。傅里叶红外光谱测试表明,二元复合材料中LA和MA在分子作用力下相互结合,未发生化学反应。经过500次20~70℃冷热循环后,复合材料相变温度波动不大,稳定性好。热重分析表明,温度不超过100℃时未有明显的质量损失,LA-MA二元复合相变材料适用于墙体等建筑围护结构。

本文引用格式

徐沣, 孙志高 . 十二酸-十四酸二元复合相变材料的制备及性能研究[J]. 化工新型材料, 2021 , 49(11) : 156 -159 . DOI: 10.19817/j.cnki.issn 1006-3536.2021.11.033

Abstract

One kind of binary eutectic phase change material was prepared by melt blending method with lauric acid (LA) and myristic acid (MA).The effect of mass fraction on crystallization temperature of LA-MA mixture was conducted by step cooling curve method.The hypoeutectic point was obtained by drawing the phase diagram of the mixture system,where the mass ratio of LA to MA was 3:1 and the eutectic temperature was 32.7℃.The latent heat of the eutectic system was 160.5J/g.FT-IR experimental results shown that LA and MA were integrated under molecular force in the binary composite and no chemical reaction occurred.After 500 times of 20~70℃ thermocycling,the phase change temperature of the composite had little change,and it indicated that the stability of LA-MA mixture was good.TG tests shown that there was no obvious mass loss when the temperature was less than 100℃.LA-MA binary composite phase change material was suitable for wall and other building envelope.

参考文献

[1] Fang Y T,Yu H M,Wan W J,et al.Preparation and thermal performance of polystyrene/n-tetradecane composite nanoencapsulated cold energy storage phase change materials[J].Energy Conversion and Management,2013,76:430-436.
[2] 何小芳,吴永豪,王月明,等.相变储能材料的研究进展[J].化工新型材料,2014,42(12):27-29.
[3] Zhao M X,Li M K,Wang L,et al.Preparation and characterization of paraffin@CLPS/MS phase change microcapsules for thermal energy storage[J].Chemistry Select,2020,5(24):7190-7196.
[4] 乔英杰,王德民,张晓红,等.复合相变储能材料研究与应用新进展[J].材料工程,2007(Z1):229-232.
[5] 刘晓,孙志高,陈之帆,等.肉豆蔻酸-十四醇二元复合相变材料的相变特性研究[J].化工新型材料,2019,47(8):131-134.
[6] 张焕芝,崔韦唯,夏永鹏,等.复合相变材料的制备及热性能研究进展[J].化工新型材料,2019,47(6):35-38,43.
[7] 刘凤利,胡国峰,刘俊华,等.癸酸-硬脂酸/有机膨胀蛭石相变蓄热砂浆的制备与性能研究[J].功能材料,2020,51(5):5007-5012.
[8] 陈久林,段洋,王志雄.相变储热技术的研究现状及应用[J].广东化工,2020,47(2):101-104,110.
[9] Sharma A,Tyagi V V,Chen C R,et al.Review on thermal energy storage with phase change materials and applications[J].Pergamon,2009,13(2):318-345.
[10] 于永生,井强山,孙雅倩.低温相变储能材料研究进展[J].化工进展,2010,29(5):896-900,913.
[11] Han G G D,Deru J H,Cho E N,et al.Optically-regulated thermal energy storage in diverse organic phase-change materials[J].Chemical Communications,2018,54(76):10722-10725.
[12] Sun D,Wang L J,Li C M.Preparation and thermal properties of paraffin/expanded perlite composite as form-stable phase change material[J].Materials Letters,2013,108:247-249.
[13] 胡大为,胡小芳,林丽莹.环氧树脂基含水定形相变材料制备[J].合成材料老化与应用,2006,34(3):12-15,26.
[14] 王博,朱孝钦,胡劲,等.利用纳米石墨强化正癸酸-十四醇复合相变材料的导热性能[J].材料导报,2019,33(22):3815-3819.
[15] 李玉洋,章学来,徐笑锋,等.正辛酸-癸酸/膨胀石墨低温复合相变材料的制备及热物性研究[J].化工新型材料,2019,47(8):39-43,48.
[16] Chen C Z,Wang L G,Huang Y.A novel shape-stabilized PCM:electrospun ultrafine fibers based on lauric acid/polyethylene terephthalate composite[J].Materials Letters,2008,62(20):3515-3517.
[17] 王立久,孟多.定形相变材料的制备与性能研究[J].新型建筑材料,2009,36(11):1-4.
Options
文章导航

/