請用此 Handle URI 來引用此文件:
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/89183
標題: | 光固化3D 列印孔洞印刷凹版之開發 DLP 3D-Printed PolyMIPE Gravure Printing Plates for Conductive Patterning |
作者: | 呂宣瑾 Hsuan-Chin Lu |
指導教授: | 廖英志 Ying-Chih Liao |
關鍵字: | 中內相乳化液模板法,凹版印刷,潤滑表面,DLP, polyMIPE,gravure printing,lubricant-infused surface,DLP, |
出版年 : | 2023 |
學位: | 碩士 |
摘要: | 近年來,可穿戴式的健康與通訊裝置促進了精密印刷技術的發展,而在可撓曲、拉伸的高分子基材上印製導電線路為主要研究重點之一。眾多印刷技術之中,凹版印刷由於其高解析度與高印刷速度而備受重視。凹版印刷過程中,墨水於印刷版與基材之間的墨水轉移率對於印刷品質至關重要,而先前研究中發現可以利用以潤滑油潤濕之表面增加液線邊界的滑動,有效提高墨水轉移率。同時,可以藉由孔洞結構的設計來內含潤滑油以提升表面潤滑層的使用壽命,但尚未有研究呈現出能夠快速形成高解析度之潤滑孔洞結構的方法。製造孔洞結構的方法之中,使用中內相乳化液模板法形成之結構(PolyMIPE)具有較微小的孔徑與高度的孔洞相連性,因此為製造潤滑凹版的理想材料。此方法利用乳化液中高分子連續相固化後,將分散相的水滴移除以形成孔洞材料,但因乳化液通常具有非常高的黏度,限制了客製化製造可以使用的方法,例如3D列印中無法使用DLP進行列印。此研究的目的在於結合MIPE模板法與DLP列印以快速製成客製化之孔洞結構,應用於高解析度凹版的製作。同時使此孔洞結構內含潤滑液體以達到高墨水轉移率。為了找尋MIPE配方中最適用的光固化樹脂,透過壓克力單體比例的調控,發現使用IBOA:2-EHA:HDDA=6:9:5之比例可得到最佳的機械與光固化性質,但液體與樹脂表面強大的吸引力致使水滴的轉移率非常低(12.5%)。透過MIPE中水含量、水添加方式與乳化方式的調控可以有效的控制孔隙度與孔徑分布,而材料選擇的最適化與較大的液滴大小分布(3.2 μm±1.8 μm)可以將乳化液之黏度降低(<10 Pa·s at 0.232 s-1),即可使用一般商業用DLP列印機台進行高解析度結構印製(>300 μm)。乳化液完成印製後,將水相去除並浸入潤滑液形成潤滑表面能夠加速液體邊界滑動,達到50.3%之液體轉移率。最後,使用開發出之材料製造凹版,可以順利在矽膠基材上印製導電線路,展現使用此研究應用於製造可拉伸電子裝置的可行性。 Wearable healthcare and communication devices have driven the development of precise printing technologies to fabricate printed, stretchable electronics and conductive patterns on polymeric substrates. Gravure printing, a technique with high resolution and throughput, depends heavily on high ink transfer ratios to successfully print high-quality features. The transfer ratio can be enhanced by fabricating lubricant-infused, porous surfaces to provide fast contact line slippage, and porous materials can be created by emulsion templating, where the water dispersed phase is removed after the polymer continuous phase is cured with light or heat. However, challenges in high-definition structure fabrication of lubricant-infused, porous structures have yet to be addressed. Polymerized medium internal phase emulsions (PolyMIPEs) are the ideal materials for fabricating lubricated, porous printing plate due to their small pore size and high interconnectivity. However, the high viscosities of emulsions severely limit the methods that can be used for custom fabrication, such as additive manufacturing. In this study, MIPE templating and digital light processing (DLP) 3D printing are combined to enable fast, custom fabrication of high-definition gravure printing plates with porous microstructures, which help retain lubricating oils to facilitate high ink transfer ratios. An acrylate resin blend of IBOA:2-EHA:HDDA=6:9:5 yields the best mechanical and light curing properties for use in MIPE formulations, but strong adhesion to the surface results in low liquid transfer ratios of 12.5%. By varying the water content and emulsifying method, the porosity, pore mean diameter and pore size distribution of the cured polyMIPE can be controlled. Careful consideration of material choices and dispersed droplet size distributions (3.2 μm±1.8 μm) lowers the viscosity of the emulsion (<10 Pa·s at 0.232 s 1), which allows high-definition structures (>300 μm) to be printed with a commercial DLP printer. After water removal and lubricant infusion in the printed structure, liquid contact line slippage is enhanced, and water transfer ratios up to 50.3% can be achieved. Finally, gravure printing plates are fabricated and used to transfer conductive ink onto a silicone substrate, demonstrating the feasibility of conductive patterning for stretchable electronic applications. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/89183 |
DOI: | 10.6342/NTU202301344 |
全文授權: | 同意授權(限校園內公開) |
顯示於系所單位: | 化學工程學系 |
文件中的檔案:
檔案 | 大小 | 格式 | |
---|---|---|---|
ntu-111-2.pdf 目前未授權公開取用 | 16.11 MB | Adobe PDF | 檢視/開啟 |
系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。