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Language: korean

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

Publication history: Received April 7, 2014
Accepted May 11, 2014

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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아크릴 단량체 종류 변화가 대전방지용 수분산 아크릴 폴리우레탄의 물성에 미치는 영향

Effect of Types of Acrylic Monomers on Properties of Anti-static Waterborne Acrylic Polyurethane Dispersion

허우영 윤동구 송기창^†

Woo Young Huh Dong Gu Yun Ki Chang Song^†

건양대학교 화공생명학과, 320-711 충남 논산시 대학로 121

Department of Chemical and Biochemical Engineering, Konyang University, 121 Daehak-ro, Nonsan, Chungnam 320-711, Korea

Korean Chemical Engineering Research, August 2014, 52(4), 451-458(8), 10.9713/kcer.2014.52.4.451 Epub 30 July 2014

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Abstract

Isophrone diisocyanate (IPDI), polycarbonate diol (PCD)과 dimethylol propionic acid (DMPA)를 출발물질로 하여 수분산 폴리우레탄(waterborne polyurethane dispersion, WPUD)을 합성하였다. 이 WPUD에 아크릴 단량체인 methyl methacrylate (MMA), 2-hydroxyethyl methacrylate (HEMA)와 butyl acrylate (BA)를 각각 첨가하여 다양한 종류의 수분산 아크릴 폴리우레탄(waterborne acrylic polyurethane dispersion, AUD)을 합성하였다. 이 AUD와 물에 분산된 다중벽 탄소나노튜브(multi-walled carbon nanotube, MWCNT)를 혼합하여 전도성 코팅 용액을 제조한 후 polycarbonate 시트 위에 도포하여 코팅 도막을 형성하고 물성을 살펴보았다. AUD로부터 제조된 코팅 도막의 연필경도, 내마모성 및 내약품성은 WPUD 보다 향상되었으나, 전기 전도도는 감소하였다. 또한 아크릴 단량체의 종류 변화 실험에서는 코팅 도막의 연필경도는 HEMA를 사용한 경우가 가장 우수하였으나, 내마모성, 내약품성 및 전기 전도도는 MMA를 사용한 경우가 가장 우수하였다.

Waterborne polyurethane dispersion (WPUD) was prepared from polycarbonate diol (PCD), isophorone diisocyanate (IPDI) and dimethylol propionic acid (DMPA) as starting materials. Then, waterborne acrylic polyurethane dispersion (AUD) was synthesized by reacting the WPUD with different types of acrylate monomers, such as methyl methacrylate (MMA), 2-hydroxyethyl methacrylate (HEMA) and butyl acrylate (BA). Subsequently, the AUD was mixed with multi-walled carbon nanotube (MWCNT) to yield a conductive coating solution, and the mixture was coated on the polycarbonate substrate. The pencil hardness, abrasion resistance and chemical resistance of the coating films from AUD were improved than those from WPUD, while the electrical conductivity of the coating films from AUD was decreased than that of WPUD. Also, the effect of acrylate types on the properties of coating films was investigated. The AUD obtained_x000D_ from HEMA showed the strongest pencil hardness, while the AUD obtained from MMA exhibited the strongest abrasion resistance, chemical resistance and electrical conductivity among several types of acrylate monomers.

Keywords

Waterborne Acrylic Polyurethane Dispersion Methyl Methacrylate 2-Hydroxyethyl Methacrylate Butyl Acrylate Multi-walled Carbon Nanotube Electrical Conductivity

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