激光诱导羟基磷灰石夹层纸表面碳化实现无墨打印  

Laser-Induced Carbonization of Hydroxyapatite Sandwich Paper for Inkless Printing

作　　者：王俊鉴 于清泉 刘舜尧 陈玉客 刘晓雨 李国栋[4] 刘晓燕 刘宏 周伟家[1] Junjian Wang;Qingquan Yu;Shunyao Liu;Yuke Chen;Xiaoyu Liu;Guodong Li;Xiaoyan Liu;Hong Liu;Weijia Zhou(Institute for Advanced Interdisciplinary Research(iAIR),School of Chemistry and Chemical Engineering,University of Jinan,Jinan 250022,China;School of Materials Science and Engineering,University of Jinan,Jinan 250022,China;State Key Laboratory of Crystal Materials,Shandong University,Jinan 250100,China;State Key Laboratory of Biobased Material and Green Papermaking,Qilu University of Technology(Shandong Academy of Sciences),Jinan 250353,China)

机构地区：[1]济南大学化学化工学院,前沿交叉科学研究院,济南250022 [2]济南大学材料科学与工程学院,济南250022 [3]山东大学,晶体材料国家重点实验室,济南250100 [4]齐鲁工业大学(山东省科学院),生物基材料与绿色造纸国家重点实验室,济南250353

出　　处：《物理化学学报》2024年第4期176-183,共8页Acta Physico-Chimica Sinica

基　　金：国家自然科学基金(52022037,52102171);山东省泰山学者(tsqn201812083);山东省自然科学基金(2021CXGC010603,ZR2021JQ15,ZR2020QE071,ZR2020LLZ006,ZR2021MB035);济南创新团队(2021GXRC019)资助项目。

摘　　要：传统的油墨打印具有方便快捷的优势,但打印过程中墨水或碳粉的大量使用对人体和环境造成了不可忽视的危害。基于激光的高能粒子特性和光热辐射热效应,利用激光欠焦和聚焦两种工作模式,可实现激光无墨打印和微区加工。本文报道了一种基于羟基磷灰石的“有机-无机-有机”三明治结构多功能纸,并利用激光的光热辐射效应使功能纸表层有机材料——纤维素纤维表面温度升高,实现表层均匀碳化,夹层无机材料——羟基磷灰石阻挡能量继续传导防止纸张烧穿,以此来达到无墨打印的效果。基于激光烧蚀的无墨打印,能够显著降低打印成本,有利于激光烧蚀打印技术的推广。此外,采用激光烧蚀打印技术作用于功能纸上的打印效果具有稳定、绿色环保等特点,在档案存储用纸、食品包装用纸和后天致盲患者阅读等方面具有广泛的应用。Traditional ink printing is convenient,but the excessive use of ink in this process has harmed both human health and the environment.Inkless printing technologies are mainly thermal and photosensitive in nature;however,they are susceptible to environmental impact,resulting in unstable printing and easy fading.In recent years,laser ablation printing technology has received considerable attention.However,the energy of the laser acting on the paper surface is affected by the surface roughness and tightness of the paper,which makes it difficult to obtain a uniform printing effect.Therefore,a complex and expensive paper-laser monitoring feedback system is required for modulating the laser parameters in real time to obtain uniform printing;however,such a system is not conducive to the popularization of laser ablation printing technology.To address this issue,a laser-induced inkless printing method,combined with micro-zone processing,is proposed.The associated high-energy characteristics and the thermal effect of laser are examined in this study.A multifunctional paper with an“organic-inorganic-organic”sandwich structure is constructed by vacuum filtration combined with thermocompression,using hydroxyapatite as the thermal insulating layer and wood fiber as the carbonized layer.The obtained functional papers display high flexibility,high tensile strength,and excellent flame resistance.Laser-induced inkless printing is realized via laser under-focusing or laser focusing onto hydroxyapatite sandwich paper.When the laser is irradiated on the surface of the functional paper,the surface-located cellulose fibers are carbonized due to the photothermal radiation effect of the laser,leaving graphitized carbon on the surface of hydroxyapatite layer.Notably,the hydroxyapatite in the interlayer of the functional paper is an outstanding thermal insulation material,which can effectively prevent further transfer of laser energy.Thus,owing to the sandwich structure of the multifunctional paper,laser inkless printing of both words a

关 键 词：激光 羟基磷灰石 夹层纸 无墨打印 

分 类 号：O647[理学—物理化学]