蓖麻油基温度感应性聚氨酯的合成及其性能研究

发布时间：2018-06-01 01:42

  本文选题：改性蓖麻油 + 温度感应性聚氨酯　； 参考：《北京服装学院学报(自然科学版)》2017年01期

【摘要】：以聚己二酸丁二醇酯2000、聚乙二醇以及改性蓖麻油作为混合软段制备了一系列温度感应性聚氨酯,分别采用傅里叶红外光谱、扫描电镜、差示扫描量热仪以及宽角X衍射等对其化学结构、微观结构、热性能及结晶性进行研究,并将制备聚氨酯用于织物整理,通过测定整理织物的透湿率和耐静水压考察其防水透湿性.结果表明:所制备的系列聚氨酯热熔融温度在35~40℃,其整理织物的透湿率在此温度范围附近有明显突跃;X宽角衍射结果显示,所制备的聚氨酯在19°,25°和21.5°出现软段PEG2000和PBA2000的结晶峰;SEM照片显示,所制备的聚氨酯形成一致密无孔薄膜,硬相分布在软相中,织物经涂层后在表面形成一层聚氨酯膜;整理织物的透湿率随聚氨酯组分中聚乙二醇相对分子质量和PEG2000含量增加逐渐增大,随硬段含量增加逐渐降低.
[Abstract]:A series of temperature induced polyurethanes were prepared with polybutylene adipate 2000, polyethylene glycol and modified castor oil as mixed soft segments. The chemical structures, microstructure, thermal properties and crystallinity of the polyurethane were studied by Fourier transform infrared spectroscopy, scanning electron microscopy, differential scanning calorimetry and wide angle X diffraction. The results showed that the thermal melting temperature of the series of polyurethanes was at 35~40 C, and the moisture permeability of the finished fabric was obviously abrupt in the vicinity of the temperature range, and the X wide angle diffraction results showed that the prepared polyurethane was 19, 25 and 21. The crystallization peaks of soft segment PEG2000 and PBA2000 appear at.5 degree, and SEM photo shows that the prepared polyurethane forms a dense non porous film, the hard phase is distributed in the soft phase, and the fabric is coated on the surface after coating a layer of polyurethane film, and the moisture permeability of the finished fabric increases gradually with the increase of the relative molecular mass and the PEG2000 content in the polyurethane component. As the content of the hard segment increases, it decreases gradually.
【作者单位】： 北京服装学院材料科学与工程学院;北京市服装材料研发与评价重点实验室;
【基金】：国家自然科学基金项目(21304004)
【分类号】：TB381;TQ317
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本文编号：1962378