冷链物流中二元有机相变储能材料的制备与热物性能

李妍; 郭彦峰; 付俊; 梁静

doi:10.13801/j.cnki.fhclxb.20210721.002

冷链物流中二元有机相变储能材料的制备与热物性能

doi: 10.13801/j.cnki.fhclxb.20210721.002

李妍^{1, 2,},
郭彦峰^1, ,,
付俊^2,,
梁静^1,

1.
西安理工大学　包装工程系，西安 710048
2.
中科院宁波材料技术工程研究所　慈溪医工所，宁波 315201

基金项目: 国家质检总局科技项目(2014QK131)；陕西省教育厅重点实验室科学研究计划项目(15JS074)；浙江省基础公益研究计划项目(LGG19E080004)

详细信息

通讯作者:
郭彦峰，博士，教授，研究方向为智能运输包装与缓冲材料、果品保鲜贮运工程　E-mail：guoyf@xaut.edu.cn

中图分类号: TQ325.9
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出版历程
- 收稿日期: 2021-05-26
- 修回日期: 2021-06-28
- 录用日期: 2021-07-05
- 网络出版日期: 2021-07-21
- 刊出日期: 2022-06-01

Preparation and thermophysical performance of organic phase change energy storage materials in cold chain transportation

LI Yan^{1, 2
,},
GUO Yanfeng^{1
, ,},
FU Jun^2
,,
LIANG Jing^1
,

1.
Packaging Engineering, Xi’an University of Technology, Xi'an 710048, China
2.
Cixi Institute of BioMedical Engineering, Ningbo Institute of Materials Technology and Engineering, Ningbo 315201, China

摘要

摘要: 有机相变储能材料相变潜热高、化学性质稳定、无过冷度和相分离现象。通过对正癸酸、月桂酸甲酯、正癸醇、月桂酸及十四烷进行热力学分析并进行两两复配，得到正癸酸-月桂酸甲酯(摩尔比为30∶70)、正癸酸-正癸醇(摩尔比为36∶64)及月桂酸-十四烷(摩尔比为21∶79)三种二元有机复配物，其相变温度均在0~5℃且相变焓较高。利用聚N-异丙基丙烯酰胺(PNIPAM)凝胶对二元有机复配物分别吸附，得到一类适用于果品保质包装与物流技术的相变储能材料；并在凝胶制备过程中加入聚乙二醇1000 (PEG1000)致孔剂，可有效提高凝胶在二元有机复配物的溶胀度。结果表明，PNIPAM-40%PEG1000/正癸酸-月桂酸甲酯相变储能材料的相变温度为3.2℃，相变潜热为188.10 J/g；PNIPAM-40%PEG1000/正癸酸-正癸醇相变储能材料的相变温度为1.2℃，相变潜热为177.74 J/g；PNIPAM-40%PEG1000/月桂酸-十四烷相变储能材料的相变温度为4.2℃，相变潜热为206.17 J/g。
- 二元有机复配物 /
- 聚N-异丙基丙烯酰胺凝胶 /
- 致孔剂 /
- 相变温度 /
- 相变潜热
Abstract: The organic phase change energy storage materials have high phase change latent heat, stable chemical properties, no supercooling and phase separation. Through thermodynamic analysis of decanoic acid, methyl laurate, 1 decanol, lauric acid and tetradecane, and compounding them in pairs, three binary organic compounds of decanoic acid-methyl laurate (molar ratio 30∶70), decanoic acid-1 decanol (molar ratio 36∶64), and lauric acid-tetradecane (molar ratio 21∶79) were obtained. Their phase transition temperature is all between 0-5℃ and corresponding latent heats of phase transition are higher. A kind of phase change energy storage material suitable for fruit packaging and logistics was acquired through the adsorption performance of poly(N-isopropylacrylamide) (PNIPAM) gel on binary organic compound, moreover the adding of polyethylene glycol 1000 (PEG1000) porogen during the gel preparation process can effectively improve the swelling ratio of the gel in the binary organic compound. The results show that, the phase change temperature of PNIPAM-40%PEG1000/decanoic acid-methyl laurate phase change energy storage material is 3.2℃, and the latent heat of phase change is 188.10 J/g, and the phase change temperature of PNIPAM-40%PEG1000/decanoic, acid-1 decanol phase change energy storage material is 1.2℃, and the latent heat of phase change is 177.74 J/g. The phase change temperature of PNIPAM-40%PEG1000/lauric acid-tetradecane phase change energy storage material is 4.2℃, and the latent heat of phase change is 206.17 J/g.
- binary organic compound /
- poly(N-isopropylacrylamide) gel /
- porogen /
- phase change temperature /
- latent heat of phase change

HTML全文

图 1 PNIPAM-40%PEG1000凝胶制备过程

Figure 1. PNIPAM-40%PEG1000 gel preparation process

PEG1000—Polyethylene glycol 1000; APS—Ammonium peroxodisulphate; TEMED—Tetramethylethylenediamine

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图 2 二元有机复配物FTIR图谱

Figure 2. FTIR spectra of binary organic compound

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图 3 二元有机复配物的差示扫描量热曲线

Figure 3. Differential scanning calorimetry curves of binary organic compound

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图 4 二元有机复配物的热物性数据

Figure 4. Thermophysical data of binary organic compound

T₀—Initial temperature; T₁—Final temperature; ΔH—Enthalpy of phase change

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图 5 PNIPAM凝胶在二元有机复配物中的溶胀度

Figure 5. Swelling ratios of PNIPAM gels in binary organic compounds

C—Concentration

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图 6 PNIPAM和PNIPAM-40%PEG1000凝胶的FTIR图谱

Figure 6. FTIR spectra of the gel PNIPAM and PNIPAM-40%PEG1000

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图 7 PNIPAM-y%PEGx凝胶的SEM图像

Figure 7. SEM images of the PNIPAM-y%PEGx gels

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图 8 PNIPAM-y%PEGx凝胶在二元有机复配物中的溶胀性能

Figure 8. Swelling performance of PNIPAM-y%PEGx gel in binary organic compounds

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图 9 PNIPAM-y%PEGx/二元有机复配物的相变焓

Figure 9. Enthalpy of phase transition of PNIPAM-y%PEGx/binary organic compounds

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表 1 聚N-异丙基丙烯酰胺(PNIPAM)-聚乙二醇(PEG)凝胶的命名

Table 1. Naming of poly(N-isopropylacrylamide) (PNIPAM)-polyethylene glycol (PEG) gel

Sample	Mass ratio of PEG∶NIPAM/%	Molecular weight of PEG
PNIPAM-y%PEGx	y	x
Note: NIPAM—N-isopropylacrylamide.

下载: 导出CSV

表 2 有机物的热物性数据

Table 2. Thermophysical data of organic matter

Sample	Phase transition temperature/℃	Latent heats of phase transition/ (J·g⁻¹)
Decanoic acid	31.39	153.72
Methyl laurate	4.74	179.25
1 decanol	6.13	200.31
Lauric acid	44.54	181.14
Tetradecane	5.68	215.85

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表 3 二元有机复配物最低共熔点

Table 3. The lowest common melting point of binary organic compound

Sample	The lowest common melting point/℃	Molar ratio
Decanoic acid-methyl laurate	−0.86	29∶71
Decanoic acid-1 decanol	−0.74	29∶71
Lauric acid-tetradecane	3.58	13∶87

下载: 导出CSV

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