【摘要】 本文采用异氰酸酯、多元醇和聚丙二醇反应制备不同异氰酸酯指数（R值）预聚体，再加入交联剂，合成单组分聚氨酯热熔胶。经过对其进行—NCO含量、黏度、附着力和硬度等测试，得出合成附着力好的单组分聚氨酯树脂。然后采用自制的聚氨酯树脂、丙烯酸树脂、萜烯树脂以及表面活性剂共混改性制备聚氨酯烫印胶水，并研究了聚氨酯烫印胶水所制作的镭射全息烫印膜的烫印性能。研究结果表明：通过比较不同R值聚氨酯树脂的黏度、附着力和硬度，R=1.3制备的单组分聚氨酯树脂（PU203）综合性能较好。聚氨酯烫印胶水涂层的镭射效果更清晰，图案更完整。使用聚氨酯烫印胶水能对镭射全息烫印膜的烫印性能有较大的提高。更多还原

【Abstract】 In this article,isocyanates,polyols,and polypropylene glycol were used to prepare prepolymers with different isocyanate indices(R values),and then crosslinking agents were added to synthesize one-component polyurethane hot melt adhesive.After conducting tests on its —NCO content,viscosity,adhesion,and hardness,the one-component polyurethane resin with good adhesion was synthesized.Then,self-made polyurethane resin,acrylic resin,terpene resin,and surfactant were blended and modified to prepare polyurethane hot stamping adhesive,and the hot stamping performance of the laser holographic hot stamping film made of polyurethane hot stamping adhesive was studied. The research results showed that,by comparing the viscosity,adhesion,and hardness of polyurethane resin with different R values,it was found that the one-component polyurethane resin(PU203) prepared with R=1.3 had better comprehensive properties.The laser effect of polyurethane hot stamping adhesive coating was clearer and the pattern was more complete. The use of polyurethane hot stamping adhesive could significantly improve the hot stamping performance of laser holographic hot stamping film.更多还原