Hyeon-Gyeong Oh, Do-Hyun Kim*, Sang-Ho Cha† , and Sang-Bum Kim†
Department of Chemical Engineering, Kyonggi University, Iui-dong, Yeongtong-gu, Suwon-si, Gyeonggi-do 16227, Korea
*Department of fire Safety Research, Korea Institute of Civil Engineering and Building Technology, Hwaesong-si, Gyeonggi-do 18544, Korea
경기대학교 화학공학과, *한국건설기술연구원 화재안전연구소
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.
Recently, the material market was increasingly extended with the dramatic development of electronic equipment such as wearable electronic devices with increasing demand. Polyurethane (PU), which is in general use in many fields, have outstanding mechanical property, wear resistance, and chemical resistance, therefore, it can be utilized as protective film material for electronics when the transparency of PU is highly increased. In this study, two types of bio-polyols and two types of prepolymers are synthesized to improve transparency of PU, and then, they were used to prepare PU films in order to confirm the effect of different chemical structures in PU films. Nuclear magnetic resonance and Fourier transform infrared confirmed the chemical properties of bio-polyol and bio-PU, and thermal, mechanical, and optical properties were analyzed by using thermogravimetric analysis, differential scanning calorimeter, universal testing machine, and ultraviolet-visible spectrophotometer. The bio-PU films show thermally stable properties and high transmittance about 87%.
최근 전자기기 분야의 비약적인 발전으로 인해 뛰어난 물성을 갖는 소재 시장은 점차 확장되고 있다. 폴리우레탄 소재는 높은 기계적 강도, 내마모성, 내화학성과 같은 특성으로 인해 전자기기의 보호 필름의 용도로 활용되기 적합하며 이에 대한 활용도를 높이기 위해 필름의 투명도 향상은 필수적이다. 본 연구에서는 폴리우레탄 소재의 투명도 향상을 위해 화학적 구조가 다른 바이오 폴리올 2종과 프리폴리머 2종을 합성 후 폴리우레탄 필름으로 제작하였다. 또한 바이오 폴리올과 폴리우레탄 필름의 화학적 특성을 확인 후 열적 ∙ 기계적 ∙ 광학적 특성을 분석하였다. 제조된 폴리우레탄 필름은 열적으로 안정한 특성을 가짐과 동시에 바이오 폴리올과 이소시아네이트 구성에 따라 약 87%에 이르는 광 투과도를 가지는 것을 확인하였다.
Keywords: eugenol, thiol-ene reaction, biopolyol, transparent polyurethane film, chemical structure.
2023; 47(2): 212-220
Published online Mar 25, 2023
Department of Chemical Engineering, Kyonggi University, Iui-dong, Yeongtong-gu, Suwon-si, Gyeonggi-do 16227, Korea