Yazar "Akgul, Mehmet" seçeneğine göre listele

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    Manufacture Of Medium Density Fiberboard (Mdf) Panels From Agribased Lignocellulosic Biomass
    (Slovak Forest Products Research Inst, 2017) Akgul, Mehmet; Uner, Birol; Camlibel, Osman; Ayata, Umit
    Lignocellulosics fibers and commercially-manufactured-chip (Pinus sylvestris L., Fagus orientalis and Quercus robur L.) with 11% moisture conten twere used for the experiment. The mixingratios of lignocellulosics fibers was 20% which is from okra and tobaccos talks, hazelnut and walnuts hell, and pinecone for each mixture in preformed panel and commercially manufactured-chip was 100 % for the control sample. A commercial ureaformaldehyde (UF) adhesive was used as a binder. The physical and mechanical properties such as density, thickness swelling (TS), bending strength (BS), modulus elasticity (MOE), internalbond (IB), screw holding ability (SHA) perpendicular to the plane of panel, Janka hardness perpendicular to the plane of panel properties of MDF were measured. The results indicated that all the panels met the general purpose-use requirements of TS-EN. Thus, our results suggest that biomass from different sources can be an alternative raw material for MDF manufacturing process.
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    Mechanical And Physical Properties Of Medium Density Fibreboard With Calcite Additive
    (SLOVAK FOREST PRODUCTS RESEARCH INST, 2020) Camlibel, Osman; Akgul, Mehmet
    In this study, it is investigated that are calcite filler can be used in the production of medium density fiberboard. Chips have been to the process of cooking for 4-5 minutes in Asplund defibrator with the vapor pressure of 7-7.5 bar, and 1800C temperature. 1.5% paraffin and 1% ammonium sulphate to be pulverized is added to fibers on the output of defibrillator and blowline line. Calcite fillers are prepared in a separate tank in order to use calcite instead of lignocellulosic fibers in the production of 1 m(3) MDF. After that, urea formaldehyde glue is prepared as three different solutions which include the calcite, respectively with 3% (20 kgm(-3)), 6% (40 kg-m(-3)), 9% (60 kg-m(-3)). The fibers are dried to moisture of 8%-12%. This press applies temperature about 185-190 degrees C and pressure about 32-34 kg-m(-2) to the mixture material for 270 seconds during pressing time. MDF panels (2100 x 4900 x 18 mm) were produced in the process. Both mechanical and physical experiments are performed on boards which are produced.
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    The Utilizing Rock Salt of Inorganic Filler in Medium Density Fibreboard (MDF) Production
    (KASTAMONU UNIV, 2020) Camlibel, Osman; Akgul, Mehmet
    Aim of study: To research the usage opportunities of the inorganic rock salt mineral in MDF production. Area of study: The materials were collected rock salt from cankiri region, wood from the Western Black Sea region, respectively. The production was performed in a private company in Duzce. The tests were performed at Duzce Forest Faculty Laboratory and Gazi Woodworking Industrial Engineering Laboratory. Material and methods: In the Asplund Defibrator, chips were baked wtihin 7-7.5 bar vapor pressure and 180 degrees C temperature for 4-5 minutes. According to the weight of dry fiber, 1.5% paraffin was given before fibrillation, fibrillation later was given 1% ammonium sulfate solution. Inorganic fillers prepared in a separate tank in order to use rock salt instead of lignocellulosic fibers in the production of 1 m(3) MDF. After that urea-formaldehyde glue is prepared as three different solutions which include the rock salt respectively with 3% (20 kg), 6% (40 kg), 9% (60 kg). This press applies 185-190 degrees C temperature and 32-34 kg/cm(2) pressure to the mixture material in 270 second pressing time. MDF panels (2100x4900x18 mm) were produced in the process. Physical, mechanical and combustion tests experiments are performed over boards. Main results: MDF products which were added percent 3 with the rock salt have more performance than the other MDF panels in this study. Highlights: The usage of the rock salt with percent 3 is recommended in MDF products.