WOOD RESEARCH Volume 70, Number 3, 2025
VERONIKA KVORKOVÁ, IGOR WACHTER, TOMÁŠ ŠTEFKO, PETER RANTUCH, DÁVID KOPINEC, and JOZEF MARTINKA

THE IMPACT OF ACRYLIC RESIN ON THE PERFORMANCE OF SPRUCE AND FIR WOOD: THE STUDY OF HARDNESS, WATER ABSORPTION, AND NATURAL WEATHERING

This study investigated the effects of acrylic resin stabilization on the properties of Norway spruce (Picea abies, (L.) H. Karst) and European silverfir (Abies alba, Mill) wood. The primary focus was on enhancing durability by improving hardness, water resistance, and UV resistance. Results demonstrated a significant increase in hardness (D-Shore) for both species, with spruce exhibiting a 72.3% improvement and fir showing a 16.5% enhancement. Water absorption tests revealed a substantial decrease in water uptake for stabilized samples compared to untreated controls. However, colorimetric analysis indicated a slight decrease in UV resistance for stabilized samples, likely attributed to the lack of UV stabilizers within the acrylic resin.

WOOD RESEARCH Volume 65, Number 1, 2020
Caglar Altay, Ergun Baysal, Hilmi Toker, Turkay Turkoglu, Mustafa Kucuktuvek, Ahmet Gunduz, and Huseyin Peker

Effects of natural weathering on surface characteristics of scots pine impregnated with wolmanit CX-8 and varnished

In this study, it was aimed to investigate the effects of weathering on some surface characteristics such as color and surface roughness changes of Scots pine impregnated with copper-containing chemical such as Wolmanit CX-8 (WCX-8) and varnished with synthetic varnish (SV), cellulosic varnish (CV), and polyurethane varnish (PV) were investigated. Results showed that while the WCX-8 impregnated and PV coated Scots pine specimens showed better color stability than other treatment groups after weathering, only CV coated Scots pine gave the most negative effect on color stability. While, the untreated (control) wood surface turned from red to green and yellow to blue respectively, after weathering, other all treatment groups gave reddish and yellowish tone after weathering. Weathering conditions increased the surface roughness of control (untreated) and other all treatment groups. The control group gave a rougher surface than other treatment groups after weathering. Surface roughness increases were the lower for CV coated Scots pine wood than other treatment groups. The results showed that while WCX-8 impregnation before varnishing gave better color characteristics, generally it caused to increase the surface roughness of Scots pine after weathering.