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1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Rape straw-wood particleboards resinated with UF resin and supplemented with nano-SiO2

100%
Dukarska D., Derkowski A.
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
|
2014
|
tom 85
2

Properties of OSB subjected to the boiling test

100%
Mirski R., Derkowski A.
Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria
|
2011
|
tom 10
|
nr 2
The aim of the study was to determine physico-mechanical properties of OSB subjected to the boiling test. The tests were conducted on OSB/3 and OSB/4 of 12, 15 and 22 mm in thickness, produced in the years 2002 and 2009. All tested boards were resinated in the core layers with PMDI, while in the face layers MUPF was applied. It results from the tests that OSB/3 of 15 mm in thickness and OSB/4 exhibit very high resistance to the boiling test and their high initial physico-mechanical parameters make it possible to satisfy the respective standards also after the test.
3

The effect of cyclic humidity changes on dimensional stability of core and outer layers in OSB/3

100%
Mirski R., Derkowski A.
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
|
2009
|
tom 69
4

Bending strength of OSB subjected to boiling test

100%
Mirski R., Derkowski A.
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
|
2010
|
tom 71
5

Udoskonalona konstrukcja odsiewaczy jednodzialowych produkcji SPOMASZ SA Torun

100%
Potega W., Derkowski A.
Przegląd Zbożowo-Młynarski
|
1998
|
tom 42
|
nr 01
44-45
6
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Non-normative method for determining acoustic insulation of board materials

81%
Dukarska D., Kusiak M., Derkowski A.
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
|
2014
|
tom 88
Non-normative method for determining acoustic insulation of board materials. The paper presents a new method for the measurement of acoustic insulation against airborne sounds in the insulation and construction board materials used in wooden and brick buildings. The primary aim of the study was to simplify the design of a test stand, and thus of individual measurements, while maintaining the confidence level of the results. A series of measurements was performed to evaluate this method’s suitability for determining the acoustic insulation of board materials, and the resulting sound reduction index was analyzed with reference to the tested material and frequency of the generated sound. The study outcomes were found to be consistent with the principles of building acoustics and allowed for drawing preliminary conclusions on the insulating properties of various board materials and sets of materials used for the construction of building partitions.
7

The effect of polyethylene glycols on the possibility of shortening pressing time of particleboards bonded with phenol-formaldehyde resin

81%
Mirski R., Lecka J., Derkowski A.
Annals of Warsaw Agricultural University. Forestry and Wood Technology
|
2004
|
tom 55
The study investigated the effect of modifying phenolic resin with polyethylene glycols with varying molar masses on the possibility of shortening pressing time in particleboards produced with the use of modified PF resin. The applied resin modifiers were PEG 200, PEG 300 and PEG 400. The conducted tests showed that all the types of polyethylene glycols added to resin make it possible to produce particleboards with good properties at shortened pressing times. The most effective modifier was PEG 200, which made it possible to shorten pressing time by 20%.
8

Properties of OSB/3 and OSB/4 boards depending on cyclic changes in humidity and air temperature

81%
Mirski R., Derkowski A., Czarnecki R.
Annals of Warsaw Agricultural University. Forestry and Wood Technology
|
2005
|
tom 57
Properties of OSB/3 and OSB/4 boards depending on cyclic changes in humidity and air temperature. The effect of cyclically changing humidity at the temperatures of 20°C and 35°C on physical and mechanical properties of OSB/3 and OSB/4 boards with various thicknesses was investigated in this study. The investigations showed that cyclic changes in air humidity, irrespective of temperature, did not cause significant changes in water resistance of the tested boards, measured by their swelling in thickness and internal bond after the cooking test. Long-term action of air with the humidity of 30 and 90%, irrespective of the seasoning temperature, caused a deterioration of mechanical properties of the boards; however, even after a 12-week seasoning under established conditions only OSB/3 boards didn't meet the requirements defined in the standard in terms of their modulus of rupture both along the longer and shorter axis.
9

The effect of ambient conditions on dimensional stability of OSB/3

81%
Mirski R., Derkowski A., Lecka J.
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
|
2007
|
tom 62
10

Comparison of properties of OSB/3 and OSB/4 boards subjected to action of humid conditions

81%
Czarnecki R., Derkowski A., Mirski R.
Annals of Warsaw Agricultural University. Forestry and Wood Technology
|
2003
|
tom 53
11

Propeerties of OSB-4 boards seasoned under humid conditions

80%
Derkowski A., Lecka J., Mirski R., Dziurka D.
Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria
|
2003
|
tom 02
|
nr 2
12

Long-term effect of temperature on the properties of OSB-4

80%
Dziurka D., Lecka J., Mirski R., Derkowski A.
Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria
|
2004
|
tom 03
|
nr 2
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