LED固化橘纹油墨的制备及其流变性能  

Preparation and Rheological Characterization of LED-cured Orange-peel Ink

作　　者：张微微 罗世永[1] 王芳 廖瑞娟 张新林 ZHANG Weiwei;LUO Shiyong;WANG Fang;LIAO Ruijuan;ZHANG Xinlin(College of Printing and Packaging Engineering,Beijing Institute of Printing,Beijing 102600,China)

机构地区：[1]北京印刷学院印刷与包装工程学院,北京102600

出　　处：《包装工程》2025年第5期57-63,共7页Packaging Engineering

摘　　要：目的制备一种在纸包装表面产生橘纹的发光二极管(Light-Emitting Diode,LED)固化橘纹油墨。方法在LED固化油墨的基础配方上加入气相SiO_(2),一方面降低纸张的吸墨性,另一方面调控油墨的流动性,使得丝网印刷后表面墨层在橘纹剂聚甲基硅氧烷的作用下易流动产生纹路,且纹路在固化前不流平,解决纸张表面橘纹效果差的问题;采用HR-10-TA流变仪表征橘纹油墨的流变、黏弹性等流变学性能。结果油墨配方如下:光引发剂819为1%,热塑性聚烯烃弹性体(Thermoplastic Polyolefin,TPO)为4%,活性胺008为10%,活性单体ACMO为15%,聚氨酯丙烯酸预聚物为54.5%,色浆为10%,聚甲基硅氧烷为1.5%,气相SiO_(2)为3.5%,蜡粉为0.5%。流变测试表明油墨具有剪切变稀的特性,其流动点为模量G'=G"=813.9 Pa,对应频率为140.9 Hz。结论加入气相SiO_(2)调控油墨的流动性,聚甲基硅氧烷作为橘纹剂,在纸张表面丝网印刷、LED固化,制备的橘纹视觉效果良好。The work aims to prepare a light-emitting diode(LED)curable orange-peel ink to generate an orange-peel effect on the surface of paper packaging.Gas-phase SiO_(2) was added to the basic formula of the LED curable ink,to reduce the ink absorbency of the paper on the one hand,and regulate the fluidity of the ink on the other hand.After screen printing,the surface ink layer was prone to flow and form patterns under the action of the orange-peel agent,polydimethylsiloxane,and the patterns did not level out before curing,solving the problem of poor orange-peel effect on the paper surface.The rheological properties such as rheology and viscoelasticity of the orange-peel ink were characterized with an HR-10-TA rheometer.The ink formula was as follows:photoinitiator 819 was 1%,thermoplastic polyolefin elastomer(TPO)was 4%,active amine 008 was 10%,active monomer ACMO was 15%,polyurethane acrylate prepolymer was 54.5%,color paste was 10%;polydimethylsiloxane was 1.5%,gas-phase SiO_(2) was 3.5%,and wax powder was 0.5%.Rheological tests showed that the ink had shear-thinning characteristics,with a flow point of modulus G'=G"=813.9 Pa,corresponding to a frequency of 140.9 Hz.In conclusion,by adding gas-phase SiO_(2) to regulate the fluidity of the ink and using polydimethylsiloxane as the orange peel agent,the orange peel effect on the paper surface is visually good after screen printing and LED curing.

关 键 词：LED固化 橘纹 气相SiO_(2) 流变性 包装纸盒 

分 类 号：TB48[一般工业技术—包装工程]