In this study, the long-term (5-year) performances of 2 varnish systems, semitransparent alkyd-based brown stain (SABBS) and alkyd-based clear varnish (ABCV), were evaluated on preservative-treated Scots pine (Pinus sylvestris L.) sapwood. Prior to varnish application, specimens were impregnated with 2 different types of wood preservative. The experimental variables were varnish type, layer thickness, and wood preservative. ASTM D 1641 was followed for exposing wood specimens to outdoor conditions. The effects of long-term exposure on adhesion properties of applied varnish systems were tested according to ASTM D 4541. Long-term outdoor exposure resulted in 4.2% and 33.9% reductions in the adhesion properties of SABBS and ABCV varnish systems, respectively. The layer thickness and preservative type did not show any statistical reductions in adhesion properties.
Adhesion strength, ageing, outside weather conditions, wood preservative, varnish, stain
BUDAKÇI, MEHMET and TAŞÇIOĞLU, CİHAT
"Adhesion properties of some protective layers exposed to outside weather conditions for five years,"
Turkish Journal of Agriculture and Forestry: Vol. 37:
1, Article 15.
Available at: https://journals.tubitak.gov.tr/agriculture/vol37/iss1/15