An impact of surface spray and pressing temperature on the properties of high density fibreboards

• Autorzy: Sala Conrad , Kowaluk Grzegorz

Identyfikatory

DOI

10.5604/01.3001.0014.7355

• Języki publikacji: EN

Abstrakty

EN

An impact of surface spray and pressing temperature on the properties of high density fibreboards. The objective of this study was to investigate the effects of chosen process parameters: water spray amount and 3rd press heating section temperature on the mechanical, physical properties of ultrathin (2.5 mm) industrial high-density fibreboards (HDF) produced with 5% of recovered HDF (rHDF) addition. Boards were produced with 0 ml/m2 – V0, 8 ml/m2 – V8, 16 ml/m2 – V16 and 32 ml/m2 – V32 of surface water spray addition on top and bottom side in industrial hot continuous press with 3rd heating section temperature setups: 145oC (V45), 160oC (V60) and 175oC (V75). After variants examination with different surface water spray amount it was found, that there is roughly linear positive correlation for MOR increase for up to 10% comparing V0 to V32 and for surface roughness decrease for up to 31%. Surface water spray improved IB for up to 21% while WA decreased for up to 9% for V8 comparing to HDF produced without surface water spray addition. According to 3rd press heating section temperature influence – MOR and MOE has increased while other mechanical properties worsen with pressing temperature increase – drop in IB and SS.

PL

Wpływ natrysku oraz temperatury prasowania na właściwości płyt pilśniowych suchoformowanych wysokiej gęstości. Celem badań było określenie wpływu ilości natrysku wody oraz temperatury 3-ciej sekcji grzewczej prasy, jako parametrów procesowych, na właściwości mechaniczne i fizyczne ultra cienkich płyt (2,5 mm) włóknistych wysokiej gęstości (HDF), wytwarzanych z 5% udziałem włókien poużytkowych (rHDF). W pierwszej części użyto natrysku wody na powierzchnię górną i dolną prasowanego materiału w ilościach: 0 ml/m2, 8 ml/m2, 16 ml/m2 i 32 ml/m2. W drugiej części zastosowano zmienne temperatury 3-ciej sekcji grzewczej przemysłowej prasy ciągłego działania, tj.: 145oC, 160oC i 175oC. Po przebadaniu płyt z różnym natryskiem wody na powierzchnię, zauważono pozytywną linową zależność dla MOR – wzrost do 10% porównując skrajne badane warianty. Podobnie było w przypadku chropowatości powierzchni, która maleje o 31%. Natrysk wody na powierzchnię poprawia IB do 21% oraz obniża WA o 9% porównując ze sobą warianty 0 i 8 ml/m2. W przypadku wpływu temperatury 3-ciej sekcji grzewczej prasy to takie parametry mechaniczne jak MOR i MOE poprawiają się wraz ze wzrostem tej temperatury, a inne jak: IB czy SS pogarszają.

Słowa kluczowe

EN

wood-based panel; HDF; recovered fibre; water spray; pressing temperature

• Wydawca: Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
• Czasopismo: Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
• Rocznik: 2020
• Tom: No. 112
• Strony: 36--53
• Opis fizyczny: Bibliogr. 48 poz., rys., tab.

Twórcy

autor

Sala Conrad

• Department of Technology and Entrepreneurship in Wood Industry, Faculty of Wood Technology/Institute of Wood Sciences and Furniture, Warsaw University of Life Sciences – SGGW

autor

Kowaluk Grzegorz

• Department of Technology and Entrepreneurship in Wood Industry, Faculty of Wood Technology/Institute of Wood Sciences and Furniture, Warsaw University of Life Sciences – SGGW

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).