A flexible method for changing the transition temperature of polyurethane solid-solid phase change materials

被引：4

作者：

Shi, Wenshuo ^{[1
]}

Wei, Kun ^{[1
]}

Fan, Yuzhe ^{[1
]}

Wang, Xiaoqing ^{[1
]}

Shi, Jiahao ^{[1
]}

Wang, Sifan ^{[1
]}

Cheng, Peng ^{[1
]}

机构：

[1] Changan Univ, Key Lab, Minist Transportat Rd Struct & Mat, Xian 710064, Peoples R China

来源：

POLYMER BULLETIN | 2023年 / 80卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Polyurethane solid-solid PCMs; Transition temperature; Crystalline properties; Microphase separation; SEGMENTED POLYURETHANE; THERMAL PERFORMANCE; NANOCRYSTALS; SEPARATION;

D O I：

10.1007/s00289-022-04151-z

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Transition temperature is significant in determining applications of phase change materials. In this paper, PEG2000 and PEG4000 were used as soft segments and MDI and 3,3MODIFIER LETTER PRIME-Dichloro-4,4MODIFIER LETTER PRIME-diaminodiphenylmethane (MOCA) were used as hard segments. Several polyurethane solid-solid phase change materials (PUSSPCMs) were synthesized by adjusting the mass ratio of PEG4000 and PEG2000. Based on the differential scanning calorimeter test, this paper studied the relationship between the mass ratio of PEG2000 and the phase transition temperature. The influence mechanism of phase change temperature was revealed from molecular structure, crystallization properties, and surface morphology. Furthermore, PUSSPCMs were tested for leakage and the thermal stability. The results showed that the synthesized PUSSPCMs had no liquid leakage during the heating process. There was a good linear relationship between the mass ratio of PEG2000 and phase transition temperature. The thermal decomposition onset temperature was above 230 degrees C.

引用

页码：1873 / 1891

页数：19

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