低黄变聚脲微胶囊相变材料的制备及性能表征

发布时间：2018-02-09 04:28

本文关键词： 微胶囊相变低黄变聚脲聚合物制备　出处：《化工进展》2017年12期 　论文类型：期刊论文

【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。
[Abstract]:Using butyl stearate as core material, isophorone diisocyanate (IP DII) or 2o 4-toluene diisocyanate (TDI) were used as isocyanate components, Two kinds of phase change energy storage materials of polyurea microcapsules were prepared by interfacial polymerization. The surface morphology, chemical structure and thermal stability of the two kinds of microcapsules were characterized. The yellowing properties of the two microcapsules were compared and analyzed by means of high temperature drying. Then the two microcapsules were treated on the fabric, and the whiteness of the two microcapsules after different baking temperature was tested and analyzed. The two kinds of microcapsules were spherical distributed. The surface of TDI microcapsules was compact and compact, and there was no adhesion between the particles. TG results showed that the density and thermal stability of IPDI microcapsules were better than that of TDI microcapsules, and the results of TG showed that the density and thermal stability of IPDI microcapsules were better than those of TDI microcapsules. The type of isocyanate has great influence on the yellowing property of the microcapsules, and the yellowing resistance of the microcapsules prepared by IPDI isocyanate is obviously better than that of TDI microcapsules. When the two microcapsules were treated on the fabric, the IPDI microcapsules showed good low yellowing properties.
【作者单位】：西安工程大学纺织与材料学院;
【基金】：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) 西安工程大学学科建设资金项目
【分类号】：TB34

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