STUDY CONCERNING THE INFLUENCE OF SOME FACTORS ON THE FORMALDEHYDE EMISSION OF PARTICLEBOARDS
Kinga Iudith DAVID
PhD-student - Universitatea "Transilvania"
Brasov - Facultatea de Industria Lemnului
Address: B-dul Eroilor nr. 29, 500036 Brasov,
Romania
Tel: +40 268 412921/int.166. Fax: +40 268 415315
E-mail:petrovic@unitbv.ro
Valeriu PETROVICI
Prof.Dr.Eng. - Universitatea "Transilvania"
Brasov - Facultatea de Industria Lemnului
Address: B-dul Eroilor nr. 29, 500036 Brasov,
Romania
E-mail: petrovic@unitbv.ro
Octavia ZELENIUC
Lecturer Dr.Eng. - Universitatea "Transilvania"
Brasov - Facultatea de Industria Lemnului
Address: B-dul Eroilor nr. 29, 500036 Brasov,
Romania
E-mail: zoctavia@unitbv.ro
Lucia DUMITRESCU
Prof.Dr.Eng. - Universitatea "Transilvania"
Brasov - Facultatea de Stiinta si Ingineria Materialelor
Address: B-dul Eroilor nr. 29, 500036 Brasov,
Romania
E-mail: lucia.dumitrescu@gmail.com
Abstract: In this
paper the authors present the results of their
own researches regarding the simultaneous influence
of two by two of the three important influencing
factors on the formaldehyde emission of particleboards,
respectively: temperature, thickness and configuration
of test samples from the board pack analyzed.
The determinations were made on a new batch of
particleboards having the thickness of 8, 12,
16 and 18mm under the conditions of the temperatures
of 23°C, 40°C, 50°C and 60°C,
taking into account seven configurations of test
samples, one of them being according to the present
standard in force SR EN 717-3/1996 and six others
adopted as being similar to different situations
that may occur in practice.
It was observed that the formaldehyde emission
is influenced more by temperature than by the
thickness of particleboards.
Irrespective of the board's thickness and temperature,
the formaldehyde emission is unevenly distributed
on the surface of the test samples pack in its
different configurationally variants, and it decreases
in the following range of studied configurations:
VA, V, VB, VF, VD, VC and VE.
The greatest absolute formaldehyde emission was
registered for a new adopted (unstandardized)
configuration, VA type, when the emission takes
place through all faces and edges of the boards
in the pack. Thus the authors consider that this
configuration should be used within the previously
mentioned standard, instead of the present one.
For all the studied thicknesses and temperatures,
the formaldehyde emission takes place more through
the edges of particleboards than through their
faces.
Key words: formaldehyde emission,
flask method, particleboards.
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