文章摘要
仓翌铭,陈煌煌,侯爱芹,谢孔良,高爱芹.液晶聚合物调控的蓄热调温材料的储热性能[J].精细化工,2021,38(2):
液晶聚合物调控的蓄热调温材料的储热性能
Heat storage properties of temperature-regulated materials controlled by liquid crystal polymer
投稿时间:2020-10-20  修订日期:2020-11-26
DOI:
中文关键词: 相变化合物  光热响应聚合物  液晶复合材料  纤维素纤维  调温织物
英文关键词: phase change compound  photo and thermal responsive polymer  liquid crystal composites  cotton fabric  thermal-regulated fabrics
基金项目:中国博士后科学基金资助项目(2019TQ0058);上海市自然科学基金项目(18ZR1400800)
作者单位E-mail
仓翌铭 东华大学 1148165093@qq.com 
陈煌煌 东华大学  
侯爱芹 东华大学  
谢孔良 东华大学  
高爱芹 东华大学 gaoaiqin@dhu.edu.cn 
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中文摘要:
      通过3,3',4,4'-二苯甲酮四甲酸二酐(BPTCD)与聚乙二醇(PEG)2000的酯化反应,制备具有光热响应的BPTCD-PEG相变聚合物,该聚合物在相变过程中可以形成液晶态。在偏光显微镜下,BPTCD-PEG呈典型的焦锥花形向列相液晶织构。采用差式扫描量热仪对BPTCD-PEG的热性能进行表征,结果表明,BPTCD-PEG在41.7 ℃出现明显的熔融峰,相变潜热值为80.42 J/g,在30.7 ℃出现明显结晶峰,对应潜热值为63.71 J/g,表明BPTCD-PEG具有显著的蓄热调温性能。将该聚合物接枝到纤维素纤维上,获得具有蓄热调温性能的纤维素液晶复合材料。对其整理后棉织物表面形貌进行了表征并测试了棉织物的调温性能。在30-40 ℃温度范围内,采用红外热成像仪记录了未整理原棉织物及80% BPTCD-PEG接枝后的复合材料在不同温度、时间下的升温、降温速率。接枝后的复合材料与未整理原棉织物相比,在30-40 ℃温度范围内,升温速率与降温速率都明显降低,表明BPTCD-PEG起到了升温过程中降低棉织物的表面温度、降温过程中升高棉织物的表面温度的作用,表明在此温度范围内,经BPTCD-PEG整理后的棉织物具有蓄热调温性能。
英文摘要:
      Phase change compound BPTCD-PEG was synthesized by esterification reaction between 3,3',4,4'-benzophenone tetracarboxylic anhydride and polyethylene glycol (Mw 2000). BPTCD-PEG had a photothermal response and it could form liquid crystal state during the phase change transition process. Under polarized optical microscope, the polymer showed a typical focal cone-shaped nematic liquid crystal texture. The thermal properties of BPTCD-PEG were characterized by differential scanning calorimeter (DSC). There was an obvious melting peak at 41.7 ℃ and a crystalline peak at 30.7 ℃, and the latent heat of phase transition was 80.42 J/g and 63.71 J/g, respectively, indicating that BPTCD-PEG had remarkable heat storage and temperature regulation performance. BPTCD-PEG was grafted onto cotton fabric to prepare cellulose liquid crystal composites with heat storage and temperature regulation properties. The surface morphology of the modified cotton fabrics was characterized and the thermal regulation properties were tested. In the temperature range of 30-40 ℃, the heating and cooling rate of the unmodified pure cotton and modified cotton with 80% BPTCD-PEG were recorded using infrared thermal imager. Compared with the unmodified pure cotton, both the heating rate and cooling rate of modified cotton fabrics with 80% BPTCD-PEG were significantly slower. The results indicated that during the heating process, BPTCD-PEG decreased the surface temperature of cotton fabrics and during the cooling process, BPTCD-PEG increased the surface temperature. It is proved that the cotton fabric treated by BPTCD-PEG has the property of heat storage and temperature regulation in this temperature range.
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