Three Hardness TestMethods andTheirRelationship onUV-Curable Epoxy Acrylate Coatings forWooden Flooring Systems

Jae-Hoon Choi; Hyun-Joong Kim

Journal of Industrial and Engineering Chemistry, Vol.12, No.3, 412-417, May, 2006

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Three Hardness TestMethods andTheirRelationship onUV-Curable Epoxy Acrylate Coatings forWooden Flooring Systems

Jae-Hoon Choi, and Hyun-Joong Kim^†

Laboratory of Adhesion & Bio-Composites,Major in Environmental Materials Science, Seoul National University, Seoul 151-921, Korea

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UV-curable epoxy coatings consist of oligomers, monomers, and a photoinitiator with no additives. The oligomer and photoinitiator used in this study were diacrylate ester of bisphenol A epoxy resin and dimethylhydroxyacetophenone. The monomers used were 2-hydroxypropyl acrylate (HPA), 1,6-hexanediol diacrylate (HDDA), and trimethylol propane triacrylate (TMPTA). To investigate the performance of UVcurable epoxy acrylate coatings at various trifunctional acrylate monomer ratios for application to wooden flooring systems, we investigated the hardness using three methods: pencil hardness, pendulum hardnesss, and microhardness; in addition we investigated their relationship and the effect of the substrate.

Keywords:UV-curable coating;pencil hardness;pendulum hardness;microhardness;substrate

[References]

Holman R, U.V. and E. B. Curing Formulation for Printing Inks, Coatings and Paints, p. 7-18, Selective Industrial Training Associates Limited, London, U.K. (1984)
Roche G, Low-VOC Coatings Using Reactive Diluents, Demonstration Project (1998)
Koleske JV, Radiation Curing of Coatings, p. 218-221, Bridgeport, NJ, U.S.A. (2002)
Ali MA, Khan MA, Ali KM, J. Appl. Polym. Sci., 60(6), 879 (1996)
Michalzik IG, Instrumented Indentation Test., 8, 1 (2001)
Musil J, Kunc F, Zeman H, Polkov H, Surf. Coat. Technol., 154, 304 (2002)
Low IM, Mater. Res. Bull., 33(12), 1753 (1998)
Bartolomeo P, Irigoyen M, Aragon E, Frizzi MA, Perrin FX, Polym. Degrad. Stabil., 72, 63 (2001)
Zeng K, Sderlund E, Giannakopoulos AE, Rowcliffe DJ, Acta Mater., 44, 1127 (1996)
Cho JD, Kim EO, Kim HK, Hong JW, Polym. Test, 21, 782 (2002)
Chen S, Lui L, Wang T, Surf. Coat. Technol., 191, 25 (2005)
Etienne-Calas S, Duri A, Etienne P, J. Non-Cryst. Solids, 344, 60 (2004)
Panich N, Sun Y, Surf. Coat. Technol., 182, 342 (2004)
Roche S, Pavan S, Loubet JL, Barbeau P, Magny B, Prog. Org. Coat., 47, 37 (2003)

[Referenced By]

[1] Holman R, U.V. and E. B. Curing Formulation for Printing Inks, Coatings and Paints, p. 7-18, Selective Industrial Training Associates Limited, London, U.K. (1984)

[2] Roche G, Low-VOC Coatings Using Reactive Diluents, Demonstration Project (1998)

[3] Koleske JV, Radiation Curing of Coatings, p. 218-221, Bridgeport, NJ, U.S.A. (2002)

[4] Ali MA, Khan MA, Ali KM, J. Appl. Polym. Sci., 60(6), 879 (1996)

[5] Michalzik IG, Instrumented Indentation Test., 8, 1 (2001)

[6] Musil J, Kunc F, Zeman H, Polkov H, Surf. Coat. Technol., 154, 304 (2002)

[7] Low IM, Mater. Res. Bull., 33(12), 1753 (1998)

[8] Bartolomeo P, Irigoyen M, Aragon E, Frizzi MA, Perrin FX, Polym. Degrad. Stabil., 72, 63 (2001)

[9] Zeng K, Sderlund E, Giannakopoulos AE, Rowcliffe DJ, Acta Mater., 44, 1127 (1996)

[10] Cho JD, Kim EO, Kim HK, Hong JW, Polym. Test, 21, 782 (2002)

[11] Chen S, Lui L, Wang T, Surf. Coat. Technol., 191, 25 (2005)

[12] Etienne-Calas S, Duri A, Etienne P, J. Non-Cryst. Solids, 344, 60 (2004)

[13] Panich N, Sun Y, Surf. Coat. Technol., 182, 342 (2004)

[14] Roche S, Pavan S, Loubet JL, Barbeau P, Magny B, Prog. Org. Coat., 47, 37 (2003)