共查询到20条相似文献,搜索用时 171 毫秒
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简单综述了复合薄膜用聚氨酯胶粘剂的特性、品种及发展方向,对用于复合薄膜生产的高固含量溶剂型双组分聚氨酯胶粘剂、无溶剂聚氨酯胶粘剂、醇溶型溶剂型双组分聚氨酯胶粘剂、水性聚氨酯胶粘剂、耐蒸煮型聚氨酯胶粘剂及功能性聚氨酯胶粘剂的发展情况进行了介绍。 相似文献
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国外交联水性聚氨酯涂料研制进展 总被引:7,自引:0,他引:7
李三军 《化学推进剂与高分子材料》1998,(6):9-12
从双组分热固型水性聚氨酯涂料、含封闭异氰酸酯的水性聚氨酯涂料、室温固化双组分水性聚氨酯涂料、挥发型低度交联水性聚氨酯涂料和光固化水性聚氨酯涂料五方面,阐述了交联水性聚氨酯涂料的国外研制进展。 相似文献
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Homogenous waterborne polyurethane/polyacrylate emulsions were synthesized based on the prepared polyurethane and polyacrylate through a facile process. The attention was attracted to the miscibility and performance of waterborne polyurethane and polyacrylate. The structures and properties of waterborne polyurethane and waterborne polyurethane/polyacrylate samples were characterized by using Fourier transform infrared spectroscopy, transmission electron microscope, X-ray photoelectron spectroscopy, X-ray diffractometer, thermogravimetric, and so forth, as well as solid content and tensile testing. The results showed that the micro morphology of waterborne polyurethane/polyacrylate emulsion presented single-phase structure with the stoichiometric polyacrylate content increasing from 33% to 80% to waterborne polyurethane. The waterborne polyurethane/polyacrylate films surface is rich in polyacrylate phase. Meanwhile, waterborne polyurethane/polyacrylate composites showed significant improvement in thermal stability and elongation at break, smaller particle size and narrower particle size distribution comparing with waterborne polyurethane. 相似文献
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聚氨酯胶黏剂在汽车上的应用及研究进展 总被引:2,自引:1,他引:2
介绍了几种聚氨酯胶黏剂如单组分湿固化聚氨酯挡风玻璃密封胶、双组分聚氨酯胶黏剂、水性聚氨酯胶黏剂、聚氨酯反应性热熔胶等在汽车制造和修理上的应用现状及研究进展,重点介绍了应用最为广泛的单组分湿固化聚氨酯挡风玻璃密封胶。指出汽车用聚氨酯胶黏剂将向环保和高性能方向发展。 相似文献
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The performance of acrylic polyurethane composite coating and aliphatic urethane composite coating in 3.5% NaCl solution under ultra-violet radiation was studied with methods of EIS, SEM and FTIR. For aliphatic polyurethane coating, the coating resistance decreased and the coating capacitance and porosity increased more quickly than acrylic polyurethane coating. The acrylic polyurethane composite coatings showed better performance than aliphatic polyurethane composite coatings. IR spectra showed that under UV irradiation conditions, the failure mechanism of the two polyurethane coatings was the transformation of sec-amide to primary amides. The fractured bonds in acrylic polyurethane were mainly C–O bonds, while in aliphatic polyurethane they were mainly C–N bonds. The lower protection property of aliphatic polyurethane coating may be mainly attributed to the C–N bonds which are more liable to be broken. 相似文献