Effects of posttreatment with alkaline copper quat and copper azole on the mechanical properties of wood-based composites

Authors : Cihat TAŞÇIOĞLU

Pages : 505-510

Doi:10.3906/tar-1208-58

View : 13 | Download : 7

Publication Date : 2013-08-01

Article Type : Research Paper

Abstract :The static bending strengths, modulus of rupture, and modulus of elasticity of 5 commercial wood-based composites [softwood plywood insert ignore into journalissuearticles values(SWP);, hardwood plywood insert ignore into journalissuearticles values(HWP);, medium density fiber-board insert ignore into journalissuearticles values(MDF);, oriented strand board insert ignore into journalissuearticles values(OSB);, and particleboard insert ignore into journalissuearticles values(PB);] were measured after a postmanufacture treatment of vacuum-impregnation with alkaline copper quat insert ignore into journalissuearticles values(ACQ); and copper azole insert ignore into journalissuearticles values(CA); insert ignore into journalissuearticles values(target retentions: 0.65, 1.30, and 2.60 kg m-3 for ACQ; 0.25, 0.50, and 1.0 kg m-3 for CA);. Of the composites tested, SWP exceptionally sustained no damage to its bending strengths, regardless of preservative types and retentions. Others insert ignore into journalissuearticles values(HWP, MDF, OSB, and PB); were necessarily affected to some degree by posttreatments. In accordance with the dimensional stability and resistance to biological attacks, of the posttreated composites, SWP seems most suitable and implemental for posttreatment when the appropriate selection of treatment concentrations and schedules is made.
Keywords : Key words Alkaline copper quat, copper azole, mechanical properties, posttreatment, wood based composites