发泡剂对水性聚氨酯合成革贝斯性能的影响研究

Study on the effect of foaming agent on the performance of waterborne polyurethane synthetic leather

本文介绍了以高固体聚氨酯为发泡剂,采用泡沫法制备具有良好透气性的合成革的实验过程。通过使用电子显微镜和图像处理软件评估泡沫复合材料的微观结构,可以查看泡沫复合材料对彩妆合成形态的影响。在实验中发现发泡剂AC的分解温度较高,可以通过聚氨酯树脂把分解温度范围缩小,在AC膜乳化后,当发泡剂AC的质量指数为1.09 m2/g时,其表面积约为发泡前的33倍。此外,在合成革相同单元尺寸内,具有分布均匀、磁导率良好、拉伸强度高等特点。

This paper introduces the experimental process of synthetic leather with good air permeability by using high solid polyurethane as foaming agent.Using electron microscope and image processing software to evaluate the microstructure of the foam composite,we can view the influence of the foam composite on the synthetic morphology of the makeup.Experiments have found that the decomposition temperature of the blowing agent AC is relatively high,and the decomposition temperature range can be reduced by polyurethane resin.After the AC film is emulsified,when the mass index of the blowing agent AC is 1.09 m2/g,its surface area is about the same as before the foaming 33 times.In addition,within the same unit size of synthetic leather,it has the characteristics of uniform distribution,good magnetic permeability,and high tensile strength.