Article
  • Improvement of Mechanical Properties of DLP 3D Printouts Using Waterborne PUA/PEGDMA Mixed Oligomer Resin and Analysis of Filtration Characteristics of Resin Dilution
  • Hyeonwoo Hwangbo and Seog-Jin Jeon

  • Department of Polymer Science and Engineering, Kumoh National Institute of Technology, Gumi, Gyeongbuk 39177, Korea

  • 수계 PUA/PEGDMA 혼합 올리고머 레진에 의한 DLP 3D 프린팅 결과물의 기계적 물성 향상 및 레진 희석액의 여과특성 분석
  • 황보현우 · 전석진

  • 금오공과대학교 고분자공학과

  • Reproduction, stored in a retrieval system, or transmitted in any form of any part of this publication is permitted only by written permission from the Polymer Society of Korea.

Abstract

In this study, commercial waterborne oligomers, polyurethane acrylate (PUA) and poly(ethylene glycol) dimethacrylate (PEGDMA), were introduced to formulate waterborne resin for Digital Light Processing (DLP) 3D printing. From the investigation of the mechanical properties of the printouts, it was confirmed that the resin including both PUA and PEGDMA exhibited higher mechanical properties than a single oligomer resin. The residual resin on the surface was completely removed by washing with water, and the size distribution and filtration effect of suspended matter in the diluted resin were investigated to compare waste resins’ effect on water pollution. The suspended matter in the dilution was reduced to less than one-third by filtering through a 0.45 μm filter. The waterborne resin that can be washed with water and whose suspended matter in the waste is effectively removed by filtration is expected to contribute to the spread of DLP 3D printing by reducing water pollution.


본 연구에서는 상용 수계 polyurethane acrylate(PUA)와 poly(ethylene glycol) dimethacrylate(PEGDMA) 기반의 수계 레진을 digital light processing(DLP) 방식으로 3D 프린팅하였다. 출력물의 기계적 물성 조사를 통해 PUA와 PEGDMA를 모두 포함하는 경우 단일 올리고머 레진에 비해 높은 기계적 물성을 나타냄을 확인하였다. 출력물은 물 세척만으로 표면 잔류 레진이 모두 제거되었고, 세척폐액의 수질오염에 대한 영향을 비교하기 위해 레진 희석액 내 부유물의 크기 분포 및 여과효과를 조사한 결과 모든 레진 조성물에서 0.45 μm 공극 필터에 의해 부유물이 1/3 미만으로 감소함을 확인하였다. 물 세척이 가능하며 여과에 의해 세척액 내 부유물의 효과적인 제거가 가능한 수계 레진은 수질오염을 저감하여 DLP 3D 프린팅의 보급에 기여할 것으로 예상한다.


Keywords: digital light processing, 3D printing, waterborne resin, polyurethane acrylate, poly(ethylene glycol) dimethacrylate.

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2022; 46(1): 30-35

    Published online Jan 25, 2022

  • 10.7317/pk.2022.46.1.30
  • Received on Aug 24, 2021
  • Revised on Oct 31, 2021
  • Accepted on Nov 2, 2021

Correspondence to

  • Seog-Jin Jeon
  • Department of Polymer Science and Engineering, Kumoh National Institute of Technology, Gumi, Gyeongbuk 39177, Korea

  • E-mail: sjjeon@kumoh.ac.kr