Plywood made from plasma-treated veneers: Shear strength after shrinkage-swelling stress. (October 2017)

• Record Type: Journal Article
• Authors: Wascher, R.; Avramidis, G.; Kühn, C.; Militz, H.; Viöl, W.
• Is Part Of: International journal of adhesion & adhesives. Volume 78(2017:Oct.)
• Page Start: 212
• Page End: 215
• Publication Date: 2017-10
• Subjects: Beech wood veneer -- Bonding quality -- Plasma treatment -- Shear strength; Adhesion -- Periodicals; Adhesives -- Periodicals; Adhésion (Physique) -- Périodiques; Adhésifs -- Périodiques; Adhesie; Kleefstoffen; Adhesion; Adhesives; Periodicals; 668.3
• DOI: 10.1016/j.ijadhadh.2017.07.003
• Languages: English
• ISSNs: 0143-7496

Abstract

Abstract: Thermally modified and unmodified beech veneers in untreated and plasma-treated state were immersed in melamine solution at different concentrations. The plasma pre-treated veneers exhibited significantly higher melamine loads than the untreated veneers at equal impregnation duration. Subsequently the veneers were manufactured into 5-layer plywood boards; the plywood samples then underwent an extreme testing procedure based on DIN-EN 314-1/2 in order to proof the bonding quality by means of shear strength. The plywood boards made of plasma pre-treated veneers exhibited up to 2.7-fold improvement in shear strength compared to plywood made of untreated veneers. Results differed markedly based on material (unmodified/thermally modified veneer) and concentration of melamine solution.