Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
권호 표지
DOI QR코드

DOI QR Code

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

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

  • Hong, Min Gi (Department of Chemical and Biochemical Engineering, Konyang University) ;
  • Kim, Byung Suk (Department of Chemical and Biochemical Engineering, Konyang University) ;
  • Song, Ki Chang (Department of Chemical and Biochemical Engineering, Konyang University)
  • 홍민기 (건양대학교 화공생명학과) ;
  • 김병석 (건양대학교 화공생명학과) ;
  • 송기창 (건양대학교 화공생명학과)
  • Received : 2011.10.13
  • Accepted : 2011.11.20
  • Published : 2012.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

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 ($10^{7.6}{\sim}10^{7.7}{\Omega}/cm^2$) of coating films from ATWPUD showed better conducting properties than that ($10^{10.9}{\Omega}/cm^2$) 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.

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 $10^{7.6}{\sim}10^{7.7}{\Omega}/cm^2$로 순수한 waterborne polyurethane dispersion (WPUD)과 MWCNT의 혼합물로부터 제조된 코팅 막의 $10^{10.9}{\Omega}/cm^2$ 보다 우수한 전기전도도를 나타내었다. 또한 ATWPUD에 첨가되는 MWCNT의 양이 증가될수록 코팅 막의 전기전도도는 증가하였지만 연필경도 및 부착력은 감소되었다.

Keywords

Acknowledgement

Supported by : 중소기업청

References

  1. Yoo, J. S. and Chun, H. J., "Application of Polyurethane Adhesives," Polym. Sci. Technol., 10(5), 578-588(1999).
  2. Dieterich, D., "Aqueous Emulsions, Dispersions and Solution of Polyurethanes; Synthesis and Properties. I," Angew. Makromol. Chem., 98, 281-340(1981).
  3. Hepburn, C., "Polyurethane Elastomer," Elsevier, London, 1982.
  4. Cooper, S. L. and Tobosky, A. V., "Properties of Linear Elastomer Polyurethane," J. Appl. Polym. Sci., 10, 1837-1844(1966). https://doi.org/10.1002/app.1966.070101204
  5. Shin, Y. T., Hong, M. G., Choi, J. J., Lee, W. K., Lee, G. B., Yoo, B. W., Lee, M. G. and Song, K. C., "Preparation and Properties of Aminosilane Terminated Waterborne Polyurethane," Korean Chem. Eng. Res.(HWAHAK KONGHAK), 48(4), 434-439(2010).
  6. Hong, M. G., Shin, Y. T., Choi, J. J., Lee, W. K., Lee, G. B., Yoo, B. W., Lee, M. G. and Song, K. C., "Preparation of Silylated Waterborne Polyurethane/Silica Nanocomposites Using Colloidal Silica," Korean Chem. Eng. Res.(HWAHAK KONGHAK), 48(5), 561-567(2010).
  7. Shin, Y. T., Hong, M. G., Choi, J. J., Lee, W. K., Yoo, B. W., Lee, M. G. and Song, K. C., "Effect of Addition of Pentaerythritol Triacrylate on the Properties of Waterborne Polyurethane," Korean Chem. Eng. Res.(HWAHAK KONGHAK), 49(4), 411-416(2011). https://doi.org/10.9713/kcer.2011.49.4.411
  8. Yun, S., Im, H. and Kim, J., "Dispersity and Electro-conductivity of PU Grafted MWCNT/PU Composite via Simple Blending Method," Appl. Chem. Eng., 21, 500-504(2010).
  9. Lee, J., K., Choi, H., O., Kim, E., B., Kim, S., Y. and Ju, C., D., "Surface Resistance and Tensile Strength of Polyester Resin by Anti-static Agents," Korean Chem. Eng. Res.(HWAHAK KONGHAK), 48(5) 638-642(2010).
  10. Han, J. H., "Current Status on Synthesis of Carbon Nanotubes and Their Applications to Conducting Polymer," Polym. Sci. Technol., 16(2), 162-175(2005).
  11. Lin, M. F., Tsen, W. C., Shu, Y. C. and Chuang, F. S., "Effect of Silicon and Phosphorus on the Degradation of Polyurethanes," J. Appl. Polym. Sci., 79(5), 881-899(2001). https://doi.org/10.1002/1097-4628(20010131)79:5<881::AID-APP130>3.0.CO;2-I
  12. ASTM D 3359, "Standard Test Methods for Measuring Adhesion by Tape Test," ASTM International, 927-929(1997).
  13. Hwang, J. H. and Song, K. C., "Preperation of UV-Curable Organic-Inorganic Hybrid Hard Coatings Using Alumina Sols and Acrylate Monomers," Korean Chem. Eng. Res.(HWAHAK KONGHAK), 49(3), 277-284(2011). https://doi.org/10.9713/kcer.2011.49.3.277

Cited by

  1. Preparation of Conductive Coating Solutions by Blending Waterborne Acrylic Polyurethane Dispersion with Carbon Nanotube vol.51, pp.1, 2013, https://doi.org/10.9713/kcer.2013.51.1.73
  2. Effect of Types of Acrylic Monomers on Properties of Anti-static Waterborne Acrylic Polyurethane Dispersion vol.52, pp.4, 2014, https://doi.org/10.9713/kcer.2014.52.4.451