硬-软段比率对水性聚氨酯胶粘剂粘合性能的影响M. ANGELES PÉREZ-LIMIÑANA1, FRANCISCA ARÁN-AÍS1,
ANA M. TORRÓ-PALAU1, CÉSAR ORGILÉS-BARCEL1
and JOSÉ MIGUEL MARTÍN-MARTÍNEZ2,∗
1 西班牙制鞋协会, 鞋类制品研究所, 03600 埃尔达, 阿利坎特, 西班牙
2 粘接及胶粘剂实验室, 阿利坎特大学, 03080 阿利坎特，西班牙
摘要 在预聚合混合过程中合成了3种水性聚氨酯分散体。通过改变二异氰酸酯类/聚乙二醇类(NCO/OH)的摩尔比率得到了不同的含有硬段的聚氨酯。在相同的颗粒大小和预聚合粘度的条件下，如果降低NCO/OH摩尔比率，就可以增加硬段
物质的数量，降低聚氨酯的分子量。另外，聚氨酯的NCO/OH摩尔比率越低，就会在高温下有越多的聚氨酯结晶析出及流动阻力的减小。较低的NCO/OH摩尔比率会改善聚氨酯的热降解稳定性。最后，随着水性聚氨酯分散体的制备及NCO/OH摩尔比率在水性聚氨酯胶粘剂中的降低，获得了一种对PVC产生很高最终粘合力的胶粘剂。
关键词水性聚氨酯胶粘剂；硬-软段比率；对PVC的粘合力；制鞋产业
英文原文：J. Adhesion Sci. Technol., Vol. 21, No. 8, pp. 755 – 773 (2007)
VSP 2007.
Also available online - www.brill.nl/jast
Influence of the hard-to-soft segment ratio on the adhesion
of water-borne polyurethane adhesive
M. ANGELES PÉREZ-LIMIÑANA1, FRANCISCA ARÁN-AÍS1,
ANA M. TORRÓ-PALAU1, CÉSAR ORGILÉS-BARCEL1
and JOSÉ MIGUEL MARTÍN-MARTÍNEZ2,∗
1 INESCOP, Footwear Research Institute, 03600 Elda, Alicante, Spain
2 Adhesion and Adhesives Laboratory, University of Alicante, 03080 Alicante, Spain
Received in final form 5 February 2007
Abstract—Three water-borne polyurethane dispersions were synthesised by the pre-polymer mixing
process. Different hard segment contents in the polyurethanes were obtained by varying the
diisocyanate/macroglycol (NCO/OH) molar ratio. A decrease in the NCO/OH ratio produced an
increase in the mean particle size and in the pre-polymer viscosity, as well as a decrease in the
molecular weight of the polyurethane. On the other hand, the lower the NCO/OH ratio, the more
crystalline the polyurethane and the lower the resistance to flow at high temperature. Lower NCO/OH
ratios improved the thermal degradation stability of the polyurethane. Finally, a high initial adhesion
to PVC was obtained in all joints produced with the aqueous polyurethane dispersions and the final
adhesion increased as the NCO/OH ratio in the water-borne polyurethane adhesive decreased.
Keywords: Water-borne polyurethane adhesives; hard-to-soft segment ratio; adhesion to PVC; shoe
industry.
本文为收费文献：
索取该文献的原文或翻译稿，请联系：wcoat@163.com或0519-86872081
