纤维素纳米纤丝对热转印纸表面性能影响的研究

Study on the Effect of Cellulose Nanofibers on the Surface Properties of Thermal Sublimation Transfer Paper

关键词:  纤维素纳米纤丝  热转印纸  表面性能  转移率

Key Words:cellulose nanofibers  thermal transfer paper  surface properties  transfer rate

摘要:本研究探讨了涂料中添加纤维素纳米纤丝（CNF）对热转印纸表面性能及转印性能的影响。结果表明，随CNF添加量的增加，涂料黏度呈现先减小后增加的变化趋势，当CNF添加量为1%时，涂料黏度比未添加CNF时降低6.30%，适量CNF添加有利于涂料组分的均匀分布；随着涂料中CNF添加量的增加, 热转印纸的平滑度、表面强度、Cobb值和转移率均表现为先增加后减小的趋势，打印油墨的干燥速度变化不大；当涂料中CNF添加量为2%时，热转印纸的转移率达最高值（85.41%），与原纸、市售纸样及未添加CNF热转印纸相比，分别高出28.46、15.96和3.93个百分点，说明添加CNF的复合涂料能显著提高油墨的转移率。

Abstract:The impact of cellulose nanofibers （CNF） coating on both surface and printing properties of thermal sublimation transfer base paper was investigated in this study. The results showed that with the increase of CNF addition amount in coating， the coating viscosity showed the trend of decreasing and then increasing， when the CNF addition amount was 1%， the coating viscosity was 6.30% lower than that when CNF was not added， and the addition of appropriate amount of CNF was beneficial to the uniform distribution of coating components. With the increase of CNF addition amount in coating， the smoothness， surface strength， Cobb value and transfer rate of the thermal transfer paper showed the trend of increasing and then decreasing， and the drying speed of printing ink had not much changed. When the addition amount of CNF in coating was 2%， the transfer rate of thermal transfer paper reached the highest value （85.41%）， which was higher than that of the original paper， the commercially available comparative paper samples and the non-added CNF by 28.46， 15.96 and 3.93 percent point， indicating that the composite coatings with the addition of CNF could significantly increase the transfer rate of the ink.