一种新型蓄冷储热复合相变材料及其应用

doi:10.19799/j.cnki.2095-4239.2022.0034

摘要/Abstract

摘要：

采用热塑性弹性体SEPS/OP10E C-PCMs通过物理交联机理，熔融共混法制备得到一种可形变，力学性能较强，可浇筑塑形的定型复合相变材料SEPS/OP10E C-PCMs。加入SEPS/OP10E-PEG 2000加强力学性能，探明了物理交联机理以及力学性能增强机理。实验借助多种测试表征手段如差示扫描量热法（DSC）、综合热分析法（TG）、拉力-应力测试等，探究其储热性能、热稳定性及力学性能等。测试结果表明，SEPS/OP10E-PEG 2000具有较高的潜热值，且50次加热-冷却循环后无石蜡泄漏，热稳定性良好，且最大拉伸率为652.3%，力学性能较强。并将这种具有浇筑塑形的SEPS/OP10E-PEG 2000应用于蓄冷箱中，其可在7～9 ℃温度下维持2.6 h之久。这种新型具有浇筑性能且各项热特性较强的复合相变材料在冷链运输中降低了储热材料的空间占比，使蓄冷箱精准控温能力和保冷性能增强的同时有效节约了冷链运输空间。

关键词: SEPS/OP10E C-PCM, 蓄冷保温, 定型复合相变材料, 冷链运输

Abstract:

A form-stabled phase change composite SEPS/OP10E C-PCMs with deformable, strong mechanical properties and casting and molding properties was prepared via the melting blending method using the thermoplastic elastomer SEPS and OP10E through the physical cross-linking mechanism. Herein, PEG 2000 was added to enhance the mechanical properties and the mechanism of physical cross-linking and mechanical property enhancement was proved. Simultaneously, in this work, thermal storage, thermal stability, and mechanical properties were investigated by various test and characterization methods, including differential scanning calorimetry (DSC), thermal analysis (TG), tension-stress test, etc., to explore its heat storage performance, thermal stability, and mechanical properties. The experimental results show that SEPS/OP10E-PEG 2000 exhibits a high latent heat value and no paraffin leakage even after 50 heating-cooling cycles, which proves its good thermal stability, and the maximum tensile rate of 652.3%, showing strong mechanical properties. Additionally, SEPS/OP10E-PEG 2000 was applied to a cold storage tank, which can be maintained at 7-9 ℃ for 2.6 h. This novel composite phase change material with special pouring performance and good thermal characteristics reduces the space proportion of thermal storage materials in cold chain transportation, thus enhancing the precision temperature control ability and cold storage performance, effectively saving the storage space of cold chain transportation simultaneously.

Key words: SEPS/OP10E C-PCM, cold storage and insulation, form-stabled composite phase change materials, cold chain transportation

中图分类号:

TB 332

张琦, 王玉静, 李银雷, 刘重阳. 一种新型蓄冷储热复合相变材料及其应用[J]. 储能科学与技术, 2022, 11(10): 3133-3141.

Qi ZHANG, Yujing WANG, Yinlei LI, Chongyang LIU. A novel composite phase change material with cold storage and insulation and its application[J]. Energy Storage Science and Technology, 2022, 11(10): 3133-3141.

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材料	T_m/℃	△H_m/(J/g)	T_f/℃	△H_f/(J/g)
OP10E	10.0	175.2	8.2	173.3
SEPS/OP10E (80 %)	10.1	147.8	3.3	146.2
SOP-15%	10.1	137.6	3.3	135.4

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[3]	徐众, 侯静, 李军, 吴恩辉, 黄平, 唐亚兰. 不同粒径活性炭/肉豆蔻酸复合相变材料[J]. 储能科学与技术, 2021, 10(1): 177-189.