化工进展 ›› 2017, Vol. 36 ›› Issue (12): 4547-4553.DOI: 10.16085/j.issn.1000-6613.2017-0877

• 材料科学与技术 • 上一篇    下一篇

低黄变聚脲微胶囊相变材料的制备及性能表征

申天伟, 陆少锋, 张晶, 邢建伟, 辛成   

  1. 西安工程大学纺织与材料学院, 陕西 西安 710048
  • 收稿日期:2017-05-12 修回日期:2017-07-20 出版日期:2017-12-05 发布日期:2017-12-05
  • 通讯作者: 陆少锋,博士,研究方向为功能高分子材料。
  • 作者简介:申天伟(1994-),男,硕士研究生。
  • 基金资助:
    国家自然科学基金(51403169)、陕西省教育厅重点实验室项目(15JS029)、中国纺织工业联合会科技指导性项目(2016034)及西安工程大学学科建设资金项目。

Preparation and performance characterization of low-yellowing polyurea microcapsule phase change materials

SHEN Tianwei, LU Shaofeng, ZHANG Jing, XING Jianwei, XIN Cheng   

  1. School of Textile and Materials, Xi'an Polytechnic University, Xi'an 710048, Shaanxi, China
  • Received:2017-05-12 Revised:2017-07-20 Online:2017-12-05 Published:2017-12-05

摘要: 以硬脂酸丁酯为芯材,分别以异佛尔酮二异氰酸酯(IPDI)或2,4-甲苯二异氰酸酯(TDI)为异氰酸酯组分,采用界面聚合法制备了两种聚脲微胶囊相变储能材料。对所制备两种类型微胶囊的表面形貌、化学结构和热稳定性进行了表征,并通过高温烘干的方式对两种微胶囊的黄变性能进行了对比分析。然后将所制备两种微胶囊处理到织物上,对经不同焙烘温度处理后织物的白度做了测试分析。研究表明,所制备的两种微胶囊都呈球形分布,IPDI型微胶囊表面完整致密,颗粒之间无粘连,而TDI型微胶囊颗粒表面有一定的粘连现象。TG结果显示IPDI型微胶囊致密性和耐热稳定性较TDI型好,可耐200℃以上高温。异氰酸酯类型对所制备微胶囊黄变性能有较大影响,采用IPDI型异氰酸酯制得的微胶囊耐黄变性能明显优于TDI型微胶囊,当将两种微胶囊处理到织物上后,IPDI型微胶囊显示出良好的低黄变性能。

关键词: 微胶囊, 相变, 低黄变, 聚脲, 聚合物, 制备

Abstract: With isophorone diisocyanate(IPDI)or 2,4-toluene diisocyanate(TDI)as isocyanate,and butyl stearate as core material,two kinds of polyurea microencapsulated phase change materials were prepared by interfacial polymerization method. Their surface morphology,chemical structure and thermal stability were characterized,and the yellowing properties of microcapsules was analyzed by high temperature drying. Then the two kinds of microcapsules were tested on cotton fabric,and the whiteness of the fabrics obtained at different baking temperatures was tested. the results showed that the prepared microcapsules were sphere with intact and smooth surface. Furthermore,there was no adhesion among IPDI particles,while the surface of TDI microcapsules had certain adhesion phenomenon. TG results showed that the compactness and heat stability of IPDI microcapsules were better than that of TDI microcapsules,and IPDI microcapsules can resist high temperature more than 200℃. The types of isocyanate had a big effect on the yellowing properties of the prepared microcapsules,and the yellowing resistance of microcapsules prepared from IPDI isocyanate was significantly better than those from TDI isocyanate. Especially,the IPDI microcapsules can show better low-yellowing properties,when treated on the fabric.

Key words: microcapsules, phase change material, low-yellowing, polyurea, interfacial polycondensation, preparation

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