Articles & Issues

Language: korean

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received December 23, 2021
Accepted January 24, 2022

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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광경화성 하이드로겔 액적의 노광 조건에 따른 표면 충돌 거동 변화에 대한 실험적 연구

Experimental Study on Surface Impact Behavior Changes of Photocurable Hydrogel Droplets According to Exposure Conditions

이상현 강동관¹ 이상민^1†

Sanghyun Lee Dong Kwan Kang¹ Sangmin Lee^1†

삼성전자, 31086 충청남도 천안시 서북구 번영로 465 ¹동의대학교 기계자동차로봇부품공학부, 47340 부산광역시 부산진구 엄광로 176

Test & System Package, Samsung Electronics, 465 Beonyeong-ro, Seobuk-gu, Cheonan-si, Chungcheongnam-do, 31086, Korea ¹Division of Mechanical, Automotive, Robot Component Engineering, Dong-Eui University, Busan, 47340, Korea

thinking@deu.ac.kr

Korean Chemical Engineering Research, May 2022, 60(2), 308-312(5), 10.9713/kcer.2022.60.2.308 Epub 27 April 2022

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Abstract

3D 프린팅 기술은 다양한 재료를 적층하여 구조물을 제작할 수 있으며, 다양한 장점을 바탕으로 최근 제조분야에 널리 활용되고 있다. 특히 고해상도의 액적 기반 3D 프린팅 기술은 주로 광경화성 물질을 사용하여 액적을 증착해 나 가며 최종 구조물을 형성한다. 물질의 광경화 특성으로 인해 프린팅 과정에서 발생할 수 있는 빛 노출에 따라 액적의 물성 및 증착 특성이 달라질 수 있다. 이에 본 연구에서는 광경화성 하이드로겔 액적의 빛에너지 조사 조건에 따른 액 적의 점도변화 및 표면과의 퍼짐 거동에 관해 실험적으로 관찰 및 분석을 수행하였다.

3D printing technology, which creates a physical object by various material deposition, has been widely used in recent years in the manufacturing field because of its advantages. Among the various printing technologies, droplet-based 3D printing technology (e.g., Polyjet®) enables a high-resolution printing using photocurable materials such as hydrogels. Depending on the degree of light exposure, ejected photocurable droplets may have different properties (e.g., viscosity) until they collide with the substrate and it leads to the different spreading behaviors of the droplets (i.e., impact, spreading, and recoiling) during deposition on the substrate. In this study, experimental observation and analysis of the changes in hydrogel droplet viscosity and spreading behavior according to the light exposure were carried out based on high-speed image processing.

Keywords

Photocurable hydrogel 3D printing Drop-on-demand Viscosity Spreading behavior

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