改性UV油墨对印刷薄木耐光变色性能的影响  

Effect of modified UV-curing ink on the light-induced discoloration of printed veneer

作　　者：林鹏[1] 龙玲[1] 徐建峰[1] 吴华贵[1] LIN Peng;LONG Ling;XU Jianfeng;WU Huagui(Research Institute of Forestry New Technology,Chinese Academy of Forestry,Beijing 100091,China)

机构地区：[1]中国林业科学研究院林业新技术研究所,北京100091

出　　处：《浙江农林大学学报》2018年第2期355-360,共6页Journal of Zhejiang A&F University

基　　金："十二五"国家科技支撑计划项目(2015BAD14B0202)

摘　　要：利用纳米二氧化钛和纳米氧化锌作为改性剂改性红色紫外光固化(UV)油墨和黄色UV油墨,并使用改性后的UV油墨印刷杨木薄木,采用激光粒度仪、紫外可见分光光度计和色彩分析仪表征了改性UV油墨的物理性能和老化前后印刷薄木的颜色变化。结果表明:改性后的UV油墨粒径变化较小;纳米二氧化钛和纳米氧化锌均能提高UV油墨在紫外区的吸光度,随着添加量的增加而增强;采用适量的纳米二氧化钛或纳米氧化锌改性UV油墨能够改善印刷薄木的耐光变色性能,但纳米氧化锌改性UV油墨印刷薄木的耐光变色性能优于纳米二氧化钛。纳米氧化锌在红色UV油墨中添加的较优质量分数为1.5%,印刷薄木的色差(ΔE*)为0.41,比未改性红色UV油墨印刷薄木降低了78.1%;纳米氧化锌在黄色UV油墨中添加的较优质量分数为0.5%,印刷薄木的ΔE*为3.12,比未改性黄色UV油墨印刷薄木降低了66.9%。To reduce the light-induced discoloration of printed veneer,nano-TiO2 and nano-ZnO were chosen to modify red UV ink and yellow UV ink.Relative ink quality of 0.5%,1.0%,1.5%and 2.0%of modifier was added to UV ink by stirring.Then the modified UV ink was printed on the surface of poplar veneer.Using a laser particle sizer,UV-Vis spectrophotometer,and colorimeter,physical properties of the modified ink and color differences printed on poplar veneer were studied.Results showed that the average particle size of the UV inks modified by nano-TiO2 decreased a little while the UV inks modified by nano-ZnO had no change.Absorbance of UV ink in the ultraviolet region was increased with the addition of nano-TiO2 or nano-ZnO.Both of nano-TiO2 and nano-ZnO could prevent light-induced discoloration of printed veneer.But when UV ink modified by nano-ZnO was printed on a veneer surface,the color difference was lower than those modified by nano-TiO2.The optimum amount of nano-ZnO in red UV ink was 1.5%,and theΔE*of the printed veneer was 0.41.Compared with the veneer printed by unmodified red UV ink,ΔE*decreased 78.1%.The optimum amount in yellow UV ink was 0.5%,and theΔE*of the printed veneer was 3.12.Compared with veneer printed by unmodified yellow UV ink,ΔE*decreased 66.9%.

关 键 词：木材科学与技术 薄木 紫外光固化(UV)油墨 纳米二氧化钛 纳米氧化锌 耐光变色 

分 类 号：TS653[轻工技术与工程] S781[农业科学—木材科学与技术]