RESEARCH OF WOOD CIRCULAR SAWS VISCOUS ELASTIC PROPERTIES
In this work the method of resonant oscillations research was applied for evaluation of viscous elastic properties of circular saws. Studies were conducted with 9ХФ steel type saws. For the …
ULTRASOUND AND VIBRANT RESPONDS OF MODIFIED OAK WOOD: A COMPARATIVE ANALYSIS
Understanding and modeling links and relations between wood micro-scale characteristics and behavior of real timber elements requires scaling-up sizes of specimens as well as testing methods and instrumentation corresponding to …
IMPACT OF TEMPERATURE AND GRAIN ANGLE ON THE VELOCITY OF SOUND IN MODIFIED OAK WOOD
Wood modification is carried out in order to improve wood properties or to change its color, aesthetic appearance or design. In addition, there are also changes in wood physical and …
INFLUENCE OF ASH WOOD SURFACE ROUGHNESS ON THE ADHESION OF ACRYLIC POLYURETHANE COATING
For the research the samples of dried (moisture content was 12 %) ash (Fraxinus excelsior L.) wood were used. Before wood finishing, the surfaces of the samples were sanded. In …
ADHESION AND WETTING PROPERTIES OF CHEMICALLY AND THERMALLY MODIFIED WOOD
Wood is not very durable in long terms when is exploited outdoors. Its exposure to moisture and UV radiation leads to changes in measurements, shape and colour as well as …
MODIFICATION OF WOOD SURFACE BY ATMOSPHERIC PRESSURE PLASMA
Lately, especially in terms of ecology, felt a great need to expand the uses of wood. However, it is limited by the small wood resistance to UV rays and moisture. …
Impact of inorganic nanoparticles to UV resistance of clear water-based wood coatings
Sunlight, oxygen, changes of atmospheric moisture and temperature influence the colour of the natural wood surfaces. Due to this, wood surfaces should be protected with different coating systems, which should …
Mechanical properties of free waterborne wood coating film utilising nanoparticles
The improvement of the coated wood durability can be achieved through the use of nanoscale UV absorbers in the coating systems. A multiply usage of the nanoparticles or their mixtures …
Wood surface photostabilization using cerium dioxide nanoparticles in transparent wood coatings
It is well known that the natural wood surfaces, finished with transparent coatings has a shorter service life and aesthetic view comparing to the wood surfaces, coated with stain. Transparent …
Cerium dioxide nanoparticles impact on the adhesion strength of transparent wood coatings to softwood
Small amount of inorganic nanoparticles, e.g. most commonly used titanium dioxide, zinc oxide and cerium dioxide (CeO2), incorporated in transparent water-based coating stucture have a promising photostability of the coating …
Impact of air-plasma treatment on early and latewood surface properties
This report presents the study of atmospheric pressure plasma treatment impact on the surface properties of early and latewood of pine (Pinus sylvestris L.) and ash (Fraxinus excelsior L.). Wood …