2019
DOI: 10.31298/sl.143.9-10.4
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Tvrdoća toplinski modificirane bukovine i grabovine

Abstract: Na tržištu se pojavljuje velik broj proizvoda (uglavnom podnih obloga) od toplinski modificiranog drva. Poznato je da se drvu mijenjaju fizička i mehanička svojstva djelovanjem temperatura viših od 160 °C u okolišu siromašnome kisikom. U prikazanom radu istraživana je promjena tvrdoće po Brinell-u toplinski modificirane bukovine i grabovine u odnosu na recentno drvo, i to na tri glavna presjeka drva: poprečnom, radijalnom i tangentnom. Bukovina i grabovina odabrane su zbog utjecaja klimatskih promjena, kao i p… Show more

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Cited by 9 publications
(6 citation statements)
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“…MPa ± 2.4 MPa and 35.7 MPa ± 7.1 MPa, respectively), and a very similar hardness (36.6 MPa ± 4.7 MPa) was measured in the samples treated by both processes. Lower hardness values after thermal modi cation compared to the reference were also reported bySedlar et al (2019). It should be noted that the difference in hardness values are all within the standard deviation of the mean.…”
supporting
confidence: 60%
“…MPa ± 2.4 MPa and 35.7 MPa ± 7.1 MPa, respectively), and a very similar hardness (36.6 MPa ± 4.7 MPa) was measured in the samples treated by both processes. Lower hardness values after thermal modi cation compared to the reference were also reported bySedlar et al (2019). It should be noted that the difference in hardness values are all within the standard deviation of the mean.…”
supporting
confidence: 60%
“…A közönséges gyertyán faanyag termikus módosítása számos kutatási beszámoló tárgyát képezte Törökországban , Iránban (Ghalehno & Nazerian 2011), Ukrajnában (Pinchevska et al 2019), és Horvátországban (Župčić et al 2009;Sinković et al 2011;Sedlar et al 2019). A különböző kezelési hőmérsékletek (130-220 °C) és kezelési időtartamok (1-20 óra) alapján értékelték a fizikai és mechanikai tulajdonságok változását.…”
Section: Módosított Gyertyán Faanyag Kutatásokunclassified
“…For sapwood there was an increase in hardness from 11.6 MPa to 12.0 MPa, and for heartwood, a decrease in hardness from 11.4 MPa to 10.7 MPa after wood modification at 150 • C for 3 h. Increase in modification temperature to 180 • C caused a decrease wood hardness to the level of about 9 MPa for both tested zones of pine wood. Sedlar et al [80] investigated Brinell hardness of thermally modified beech wood and recorded a decrease for 3%, 15%, and 25% on cross, radial, and tangential section, respectively for a modification temperature of 200 • C and a modification time of 48 h.…”
Section: Brinell Hardness Of Wood After Finishingmentioning
confidence: 99%