论文部分内容阅读
以异佛尔酮二异氰酸酯(IPDI)、聚己内酯二醇(PCL)和二羟甲基丙酸(DMPA)为原料,三乙胺(TEA)为中和剂,乙二胺(EDA)为扩链剂,采用以水为基的混合介质合成了油包水(W/O)型的高固含量(为60%)WPU(水性聚氨酯)鞋用胶。研究结果表明:当w(DMPA)=5%(相对于预聚体质量而言)、中和度为90%和R=n(—NCO)∶n(—OH)=1.6∶1时,所得WPU鞋用胶的综合性能相对较好,其稳定性优、黏度适中、初粘力≥0.85 k N/m、终粘力为5.94 k N/m或被粘基材的剥离破坏,完全满足制鞋工艺对初粘力的基本要求以及鞋类产品对终粘力的基本要求。
Using isophorone diisocyanate (IPDI), polycaprolactone diol (PCL) and dimethylolpropionic acid (DMPA) as raw materials, triethylamine (TEA) as neutralizer, ethylenediamine (EDA) As chain extender, WPU (water-based polyurethane) shoe glue with water-based (W / O) type high solid content (60%) was synthesized by using water as base mixed media. The results show that when w (DMPA) = 5% (relative to prepolymer mass), the degree of neutralization is 90% and R = n (-NCO): n The overall performance of WPU shoe glue is relatively good, its excellent stability, moderate viscosity, initial tack ≥0.85 kN / m, the final tack force of 5.94 kN / m or stripping of the adhesive substrate destruction, fully meet the system Footwear on the initial viscosity of the basic requirements as well as footwear products on the final viscosity of the basic requirements.