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Particleboards with partially liquefied bark of different particle sizes
ID
Jiang, Wen
(
Avtor
),
ID
Adamopoulos, Stergios
(
Avtor
),
ID
Petrič, Marko
(
Avtor
),
ID
Šernek, Milan
(
Avtor
),
ID
Medved, Sergej
(
Avtor
)
PDF - Predstavitvena datoteka,
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Izvleček
This paper presents a novel method of partially liquefying bark sawmilling waste for use in making particleboards. Maritime pine (Pinus pinaster Ait.) bark of different particle sizes (fine, medium, coarse, and mixed) was partially liquefied in the presence of ethylene glycol as a solvent and sulphuric acid as a catalyst at 180°C for 30 minutes. Single-layer particleboards were prepared by mixing partially liquefied bark (PLB) and wood chips at a ratio of 0.25 with no adhesives (group A) and at ratios of 0.25 or 0.1 with melamine-urea-formaldehyde (MUF) adhesives for additional bonding (groups B and C respectively). Mechanical and physical properties of the particleboards were tested according to European standards. The results showed that the boards in group A had lower densities, inferior mechanical properties and higher moisture content than those in groups B and C. Bark particle size had a significant effect on the mechanical properties of particleboards within each group. Additional MUF bonding and avoidance of coarse bark particles had a positive effect on mechanical properties. The thickness swelling (TS) and water absorption (WA) values of MUF-bonded boards were lower than those of boards without MUF, and greater addition of PLB produced particleboards with better water resistance. Bark particle size was not as critical for TS and WA as for mechanical properties. The overall results suggested using a bark particle size of < 2 mm for further studies.
Jezik:
Angleški jezik
Ključne besede:
skorja
,
etilen glikol
,
utekočinjenje
,
MUF lepilo
,
vlaknene plošče
,
Pinus pinaster Ait.
Tipologija:
1.01 - Izvirni znanstveni članek
Organizacija:
BF - Biotehniška fakulteta
Status publikacije:
Objavljeno
Različica publikacije:
Objavljena publikacija
Leto izida:
2021
Št. strani:
Str. 43-57
Številčenje:
Vol. 64, no. 207
PID:
20.500.12556/RUL-128904
UDK:
630*8
ISSN pri članku:
1644-3985
DOI:
10.12841/wood.1644-3985.363.10
COBISS.SI-ID:
70741507
Datum objave v RUL:
13.08.2021
Število ogledov:
1469
Število prenosov:
52
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Objavi na:
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Naslov:
Drewno
Založnik:
Wydawnictwo Instytutu Technologii Drewna
ISSN:
1644-3985
COBISS.SI-ID:
1255590
Sekundarni jezik
Jezik:
Angleški jezik
Ključne besede:
bark
,
ethylene glycol
,
liquefaction
,
maritime pine
,
MUF resin
,
particleboard
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