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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 October 13, 2011
Accepted November 20, 2011

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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Aniline Terminated Waterborne Polyurethane/Multi-walled Carbon Nanotube 복합 코팅 용액의 제조 및 물성

Preparation and Properties of Aniline Terminated Waterborne Polyurethane/Multi-walled Carbon Nanotube Composite Coating Solutions

홍민기 김병석 송기창^†

Min Gi Hong Byung Suk Kim Ki Chang Song^†

건양대학교 화공생명학과, 320-711 충남 논산시 내동 26

Department of Chemical and Biochemical Engineering, Konyang University, 26 Nae-dong, Nonsan-si, Chungnam 320-711, Korea

Korean Chemical Engineering Research, June 2012, 50(3), 403-409(7), NONE Epub 5 June 2012

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Abstract

Poly (carbonate diol), isophrone diisocyanate와 dimethylol propionic acid로 부터 제조된 polyurethane prepolymer의 말단 NCO기를 aniline으로 capping시켜 aniline terminated waterborne polyurethane dispersion (ATWPUD)을 합성하였다. 이 ATWPUD와 물에 분산되어 있는 multi-walled carbon nanotube (MWCNT)를 혼합시켜 전도성 코팅 용액을 제조한 후, 이것을 polycarbonate 기재 위에 도포하여 코팅 막을 형성하였다. ATWPUD와 MWCNT를 혼합하여 얻어진 코팅 막의 표면저항 값은 107.6~107.7Ω/cm2로 순수한 waterborne polyurethane dispersion (WPUD)과 MWCNT의 혼합_x000D_ 물로부터 제조된 코팅 막의 1010.9Ω/cm2 보다 우수한 전기전도도를 나타내었다. 또한 ATWPUD에 첨가되는 MWCNT의 양이 증가될수록 코팅 막의 전기전도도는 증가하였지만 연필경도 및 부착력은 감소되었다.

Polyurethane prepolymers were prepared from poly (carbonate diol), isophrone diisocyanate, and dimethylol propionic acid. Then, aniline terminated waterborne polyurethane dispersion (ATWPUD) was synthesized by capping aniline on the NCO group of the prepolymer. Subsequently, ATWPUD was mixed with multi-walled carbon nanotube (MWCNT) to yield coating solutions, and the mixture was coated on the polycarbonate substrate. The surface resistance (107.6~107.7Ω/cm2) of coating films from ATWPUD showed better conducting properties than that (1010.9Ω/cm2) from pure waterborne polyurethane dispersion (WPUD) when MWCNT was mixed. Also, the surface resistance of coating films was increased, but the pencil hardness and adhesion were decreased with increasing the amount of MWCNT added in the ATWPUD.

Keywords

Aniline Terminated Waterborne Polyurethane Dispersion Aniline Conducting Properties Surface Resistance Multi-walled Carbon Nanotube

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