Technical Note: Plasma Pretreatment Enhances Field Performance of Exterior Wood Coatings

Authors

  • V. Blanchard
  • R. Stirling

Keywords:

Plasma treatments, wood coatings, field testing

Abstract

Plasma pretreatment of wood modifies surface properties and can lead to increased wettability or hydrophobicity. These modified properties can lead to improved coatings adhesion. The present work examines the performance of selected coatings on wood pretreated with plasmas in a field test. After 31 mo of exposure in coastal British Columbia, a semitransparent film-forming finish was less degraded and exhibited lower levels of mold or blue stain on plasma-pretreated samples than on untreated controls. This suggests that plasma treatment of wood prior to coating could lead to improved coatings performance and resistance to mold or blue stain.

References

ASTM (1986) D 772-86. Standard method for evaluating degree of flaking (scaling) of exterior paints. American Society for Testing and Materials, West Conshohocken, PA.nASTM (1988a) D 661-88. Standard method for evaluating degree of cracking of exterior paints. American Society for Testing and Materials, West Conshohocken, PA.nASTM (1988b) D 3274-88. Standard method for evaluating degree of surface disfigurement of paint films by microbial (fungal and algal) growth or dirt accumulation. American Society for Testing and Materials, West Conshohocken, PA.nASTM (1993a) D 660-93. Standard method for evaluating degree of checking of exterior paints. American Society for Testing and Materials, West Conshohocken, PA.nASTM (1993b) D 662-93. Standard method for evaluating degree of erosion of exterior paints. American Society for Testing and Materials, West Conshohocken, PA.nBlanchard V, Blanchet P, Riedl B (2009a) Surface energy modification by radiofrequency inductive and capacitive plasmas at low pressures on sugar maple: An exploratory study. Wood Fiber Sci 41(3):245-254.nBlanchard V, Riedl B, Blanchet P, Evans P (2009b) Modification of sugar maple wood board surface modification by plasma treatment at low pressure. Contact angle, wettability and adhesion. Vol. 6. Pages 311-323 in KL Mittal, ed. Brill Online Books and Journals, Leiden, The Netherlands.nBugnicourt E, Tino R, Harms C, McNerney O, Baars A, Vizárová K (2012) DURAWOOD plasma treatment for more durable coated wood to help the timber sector meet growing environmental, legislative and consumer demands. http://durawood-fp7.eu/2012/10/'>http://durawood-fp7.eu/2012/10/nDenes FS, Emilio Cruz-Barba LE, Manolache S (2005) Plasma treatment of wood. Pages 447-473 in RM Rowell, ed. Handbook of wood chemistry and wood composites. CRC Press, Boca Raton, FL.nFeist WC (1988) Weathering performance of finished southern pine plywood siding. Forest Prod J 38(2):22-28.nJamali A, Evans PD (2011) Etching of wood surfaces by glow discharge plasma. Wood Sci Technol 45(1):169-182.nKogelschatz U (2003) Dielectric-barrier discharges: Their history, discharge physics, and industrial applications. Plasma Chem Plasma Process 23(1):1-46.nLevasseur O, Stafford L, Gherardi N, Naudé N, Blanchard V, Blanchet P, Riedl B (2012) Formation of superhydrophobic wood surfaces using atmospheric-pressure dielectric barrier discharge in helium-hexamethyldisiloxane gas mixtures. Plasma Process Polym 9(11-12):1168-1175.nPoaty B, Riedl B, Blanchet P, Blanchard V, Stafford L (2013) Improved water repellency of black spruce wood surfaces after treatment in carbon tetrafluoride plasmas. Wood Sci Technol 47(2):411-422.nPodgorski L, Chevet B, Onic L, Merlin A (2000) Modifcation of wood wettability by plasma and corona treatments. Int J Adhes Adhes 20(2):103-111.nWolkenhauer A, Militz H, Viöl W (2008) Increased PVAglue adhesion on particle board and fibre board by plasma treatment. Holz Roh Werkst. 66(2):143-145.nZanini S, Riccardi C, Orlandi M, Fornara V, Colombini MP, Donato DI, Legnaioli S, Palleschi V (2008) Wood coated with plasma-polymer for water repellence. Wood Sci Technol 42(2):149-160.n

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Published

2013-04-15

Issue

Number 2 / April 2013

Section

Research Contributions

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