热敏变色调温双功能性微胶囊的制备及其应用  

Preparation and application of thermochromic and thermoregulation bi-functional microcapsules

作　　者：蔡钦泽 叶景鹏 张国庆[1] 刘国金[1,3] 周岚 CAI Qinze;YE Jingpeng;ZHANG Guoqing;LIU Guojin;ZHOU Lan(Key Laboratory of Advanced Textile Materials and Manufacturing Technology(Ministry of Education),Zhejiang Sci-Tech University,Hangzhou 310018,China;Zhejiang Charming Dyeing and Finishing Co.,Ltd.,Jiaxing 314000,Zhejiang,China;Zhejiang Provincial Key Laboratory of Green Cleaning Technology and Washing Products,Lishui 323000,Zhejiang,China;Zhejiang Provincial Innovation Center of Advanced Textile Technology,Shaoxing 312000,Zhejiang,China)

机构地区：[1]浙江理工大学先进纺织材料与制备技术教育部重点实验室,杭州310018 [2]浙江嘉名染整有限公司,浙江嘉兴314000 [3]浙江省绿色清洁技术及洗涤用品重点实验室,浙江丽水323000 [4]浙江省现代纺织技术创新中心,浙江绍兴312000

出　　处：《材料工程》2024年第9期150-157,共8页Journal of Materials Engineering

摘　　要：针对现有的热敏变色微胶囊中相变溶剂热焓值低、包覆率低等问题,以发色剂2′-氯-6′-(二乙氨基)荧烷、显色剂双酚A和相变材料十六酸十二酯作为复合芯材,以密胺树脂作为壁材,通过原位聚合法制备兼具可逆热敏变色性和蓄热调温性的双功能微胶囊,研究微胶囊的表面形貌、热性能和变色性能。结果表明:控制2′-氯-6′-(二乙氨基)荧烷、双酚A和十六酸十二醇酯三者质量比为0.3∶4∶60,在芯壁材料质量比0.8∶1条件下制备的微胶囊具有光滑的圆球形外观,平均粒径约3μm,包覆率达到86.4%时,微胶囊潜热值可达138.3 J/g,经120次升降温后仍有灵敏的颜色恢复性。将该热敏变色调温微胶囊以丝网印花的方式应用于棉织物,印制织物潜热值可达到9.74 J/g,在25~40℃范围内可实现红色到白色之间的快速变色,具有良好的蓄热调温性和热致变色响应性。Aiming at the current problems of low enthalpy value and low coverage rate of phase change solvent in thermochromic microcapsules,the bi-functional microcapsules with reversible thermochromic property,and heat storage and temperature regulation properties were prepared by in-situ polymerization using chromogenic agent 2′-chloro-6′-(diethylamino)fluorane,chromogenic agent bisphenol A,and phase change material hexadecanoic acid dodecanol ester as the composite core materials and melamine resin as the wall material.The surface morphology,thermal properties,and discoloration properties of the microcapsules were studied.The results show that when the mass ratio of 2′-chloro-6′-(diethylamino)fluorane,bisphenol A,and hexadecanoic acid dodecanol ester is 0.3∶4∶60 and the mass ratio of core to wall materials is 0.8∶1,the prepared microcapsules have smooth and spherical shape,the average particle size is about 3μm,the encapsulation rate reaches 86.4%,the latent heat value is 138.3 J/g,showing good color recovery after 120 cycles of temperature rising and cooling.After this microcapsules are applied on cotton fabrics by screen printing,the latent heat value of the printed fabric can reach 9.74 J/g,and the fast reversible color change from red to white in the range of 25-40℃can be achieved,exhibiting good heat storage temperature regulating property and thermal color changing response property.

关 键 词：热敏变色 蓄热调温 微胶囊 丝网印花 

分 类 号：TB332[一般工业技术—材料科学与工程]