Advertisement

Preparation and characterization of polyurethane clearcoats and investigation into their antigraffiti property

  • 528 Accesses

  • 5 Citations

Abstract

A type of antigraffiti polyurethane clearcoat was prepared and characterized. Polymethylsiloxane grafted by fluorocarbon side chains (PSF) was first synthesized through hydrosilylation of polymethylhydrosiloxane with dodecafluoroheptyl acrylate. Hydroxyl fluoroacrylate resins with different hydroxyl contents were synthesized via free radical-initiated solution polymerization and further applied to prepare polyurethane clearcoats. The synthesized polymers were structurally characterized by using Fourier transform infrared and 1H nuclear magnetic resonance. The prepared polyurethane clearcoats underwent contact angle measurement, dynamic thermal mechanical analysis, nanoscratch experiments, and atomic force microscopy. The results reveal that low surface energy, high crosslink density, low coefficient of friction, and low roughness were jointly beneficial to antigraffiti properties. Antigraffiti testing was carried out on the clearcoat with 8.0 wt% PSF and 2.0 wt% active silicone fluid, and this clearcoat showed high resistance to acrylic spray paint, permanent markers, and other graffiti materials.

This is a preview of subscription content, log in to check access.

Access options

Buy single article

Instant unlimited access to the full article PDF.

US$ 39.95

Price includes VAT for USA

Subscribe to journal

Immediate online access to all issues from 2019. Subscription will auto renew annually.

US$ 99

This is the net price. Taxes to be calculated in checkout.

Scheme 1
Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9

References

  1. 1.

    Wu, XD, Rosen, RP, “Development of Low-VOC 2K Waterborne Polyurethane Anti-graffiti Coatings.” JCT CoatingsTech, 5 (5) 66–72 (2008)

  2. 2.

    Rabea, AM, Mohseni, M, Mirabedini, SM, “Investigating the Antigraffiti Properties of a Polyurethane Clearcoat Containing a Silicone Polyacrylate Additive.” J. Coat. Technol. Res., 8 (4) 497–503 (2011)

  3. 3.

    Siano, S, Agresti, J, Cacciari, I, Ciofini, D, Mascalchi, M, Osticioli, I, Mencaglia, AA, “Laser Cleaning in Conservation of Stone, Metal, and Painted Artifacts: State of the Art and New Insights on the Use of the Nd:YAG Lasers.” Appl. Phys. A: Mater. Sci. Process., 106 (2) 419–446 (2012)

  4. 4.

    Goidanich, S, Toniolo, L, Jafarzadeh, S, Wallinder, IO, “Effects of Wax-Based Anti-graffiti on Copper Patina Composition and Dissolution During Four Years of Outdoor Urban Exposure.” J. Cult. Heritage, 11 (3) 288–296 (2010)

  5. 5.

    Carmona-Quiroga, PM, Rubio, J, Sanchez, MJ, Martinez-Ramirez, S, Blanco-Varela, MT, “Surface Dispersive Energy Determined with IGC-ID in Anti-graffiti-Coated Building Materials.” Prog. Org. Coat., 71 (3) 207–212 (2011)

  6. 6.

    Sanjeevan, P, Klemm, AJ, Klemm, P, “Removal of Graffiti from the Mortar by Using Q-Switched Nd:YAG Laser.” Appl. Surf. Sci., 253 (20) 8543–8553 (2007)

  7. 7.

    Scheerder, J, Visscher, N, Nabuurs, T, Overbeek, A, “Novel, Water-Based Fluorinated Polymers with Excellent Antigraffiti Properties.” J. Coat. Technol. Res., 2 (8) 617–625 (2005)

  8. 8.

    Rabea, AM, Mohseni, M, Mirabedini, SM, Tabatabaei, MH, “Surface Analysis and Anti-graffiti Behavior of a Weathered Polyurethane-Based Coating Embedded with Hydrophobic Nano Silica.” Appl. Surf. Sci., 258 (10) 4391–4396 (2012)

  9. 9.

    Yari, H, Mohseni, M, Ramezanzadeh, B, Rabea, AM, “Investigating the Degradation Resistance of Silicone-Acrylate Containing Automotive Clearcoats Exposed to Bird Droppings.” Prog. Org. Coat., 75 (3) 170–177 (2012)

  10. 10.

    Bamoharram, FF, Heravi, MM, Saneinezhad, S, Ayatic, A, “Synthesis of a Nano Organo-Silicon Compound for Building Materials Waterproofing, Using Heteropolyacids as a Green and Eco-Friendly Catalyst.” Prog. Org. Coat., 76 (2–3) 384–387 (2012)

  11. 11.

    Corcione, CE, Frigione, M, “UV-Cured Siloxane-Modified Acrylic Coatings Containing Birifrangent Calcarenitic Stone Particles: Photo-Calorimetric Analysis and Surface Properties.” Prog. Org. Coat., 72 (3) 522–527 (2011)

  12. 12.

    Luo, ZH, Yu, HJ, He, TY, “Synthesis and Characterization of the Hydrophobic Diblock Copolymers of Poly(dimethylsiloxane)-block-poly(ethyl Methyl Acrylate) through Atom Transfer Radical Polymerization.” J. Appl. Polym. Sci., 108 (2) 1201–1208 (2008)

  13. 13.

    Canak, TC, Serhatli, IE, “Synthesis of Fluorinated Urethane Acrylate Based UV-Curable Coatings.” Prog. Org. Coat., 76 (2–3) 388–399 (2012)

  14. 14.

    Chen, LJ, Shi, HX, Wu, HK, Xiang, JP, “Preparation and Characterization of a Novel Fluorinated Acrylate Resin.” J. Fluor. Chem., 131 (6) 731–737 (2010)

  15. 15.

    Manvi, GN, Singh, AR, Jagtap, RN, Kothari, DC, “Isocyanurate based fluorinated polyurethane dispersion for anti-graffiti coatings.” Prog. Org. Coat., 75 (3) 139–146 (2012)

  16. 16.

    Fowkes, FM, “Attractive Forces at Interfaces.” Ind. Eng. Chem., 56 (12) 40 (1964)

  17. 17.

    Owens, DK, Wendt, RC, “Estimation of Surface Free Energy of Polymers.” J. Appl. Polym. Sci., 13 (8) 1741 (1969)

  18. 18.

    Song, W, Gu, AJ, Liang, GZ, Yuan, L, “Effect of the Surface Roughness on Interfacial Properties of Carbon Fibers Reinforced Epoxy Resin Composites.” Appl. Surf. Sci., 257 (9) 4069–4074 (2011)

  19. 19.

    Lin, F, Song, MZ, He, ZZ, Zhang, TY, “Synthesis and Structural Characterization of Methacrylic Acid/Octadecyl Acrylate-Graft-poly(methylhydrosiloxane) by Hydrosilylation.” J. Appl. Polym. Sci., 107 (6) 3773–3780 (2008)

  20. 20.

    Chen, YJ, Cheng, SY, Wang, YF, Zhang, CC, “Chemical Components and Properties of Core-Shell Acrylate Latex Containing Fluorine in the Shell and Their Films.” J. Appl. Polym. Sci., 99 (1) 107–114 (2006)

  21. 21.

    Cui, XJ, Zhong, SL, Wang, HY, “Emulsifier-Free Core-Shell Polyacrylate Latex Nanoparticles Containing Fluorine and Silicon in Shell.” Polymer, 48 (25) 7241–7248 (2007)

  22. 22.

    Hu, LA, Zhang, CC, Chen, YJ, Hu, YY, “Synthesis and Silicon Gradient Distribution of Emulsifier-Free TRIS-Containing Acrylate Copolymer.” Colloid Surf. A, 370 (1–3) 72–78 (2010)

  23. 23.

    Sailer, RA, Soucek, MD, “Viscoelastic Properties of Alkyd Ceramers.” J. Appl. Polym. Sci., 73 (10) 2017–2028 (1999)

  24. 24.

    Alyamac, E, Soucek, MD, “Acrylate-Based Fluorinated Copolymers for High-Solids Coatings.” Prog. Org. Coat., 71 (3) 213–224 (2011)

  25. 25.

    Li, H, “Synthesis, Characterization and Properties of Vinyl Ester Matrix Resins.” PhD Dissertation, Virginia Polytechnic Institute, pp. 75–78, 1998

  26. 26.

    Liu, P, Gu, AJ, Liang, GZ, Guan, QB, Yuan, L, “Preparation and Properties of Novel High Performance UV-Curable Epoxy Acrylate/Hyperbranched Polysiloxane Coatings.” Prog. Org. Coat, 74 (1) 142–150 (2012)

  27. 27.

    Licchelli, M, Marzolla, SJ, Poggi, A, Zanchi, C, “Crosslinked Fluorinated Polyurethanes for the Protection of Stone Surfaces from Graffiti.” J. Cult. Heritage, 12 (1) 34–43 (2011)

Download references

Acknowledgments

The authors are grateful to the National Natural Science Foundation of China (Grant No. 21276050, 21076044) for financial support.

Author information

Correspondence to Guomin Xiao.

Electronic supplementary material

Below is the link to the electronic supplementary material.

Supplementary material 1 (MPG 40640 kb)

Supplementary material 2 (MPG 49282 kb)

Supplementary material 1 (MPG 40640 kb)

Supplementary material 2 (MPG 49282 kb)

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Liu, H., Gao, L., Shang, Q. et al. Preparation and characterization of polyurethane clearcoats and investigation into their antigraffiti property. J Coat Technol Res 10, 775–784 (2013) doi:10.1007/s11998-013-9507-1

Download citation

Keywords

  • Hydrosilylation
  • Polymethylsiloxane
  • Fluoropolymer
  • Polyurethane clearcoat
  • Antigraffiti property