分散荧光染料色浆的制备及稳定性能

Preparation of Fluorescent Disperse Dye Paste and Its Stability

摘要:

以苯并吡喃类分散荧光染料和萘磺酸类阴离子分散剂为原料，通过湿磨法制备分散荧光染料色浆，并研究其色浆稳定性能，以制备荧光喷墨印花墨水。结果表明：随研磨时间延长，四种分散荧光染料色浆的粒径和荧光强度均有所降低。分散荧光桃红BG色浆离心50min后的比吸光度仍达到78.1%，离心稳定性较好。在55℃条件下放置5d后分散荧光染料色浆的粒径有所增加，其中分散荧光桃红BG染料色浆粒径的增加率仅为7.5%，染料色浆热稳定性能较好；加热处理过后分散荧光染料色浆的荧光强度有所降低。综合比较分散荧光桃红BG染料色浆的稳定性能良好，更加适用于喷墨印花墨水的配制。

Abstract:

Fluorescent disperse paste was prepared with four kinds of benzopyran fluorescent disperse dye and naphthalene sulfonic derivative dispersing agent using wet grinding process and their stability property was assessed for inkjet printing ink. Particle sizes and fluorescence intensity of the obtained four kinds of dye paste decreased with prolonging the grinding time. The absorbance ratio of the fluorescent disperse pink BG centrifuged for 50 min was 78.1%, indicating that pink BG paste performed excellent centrifugal stability. The particle sizes of all the fluorescent disperse dye paste increased after stored for 5 d at 55℃. The fluorscent disperse orange BG presented better thermal property as its particle size increased by only 7.5%. The fluorescence intensity of dye paste also reduced after heated. From all the discussions, the fluorescent disperse pink BG performed excellent stability to apply in the preparation of inkjet printing ink.