Počet záznamov: 1
Influence of urea-formaldehyde adhesive modification with beech bark on chosen properties of plywood
SYS 0249075 LBL ---naa--22--------450- 005 20240509140122.1 014 $a 000402883700075 $2 CCC 014 $a 000402883700075 $2 WOS CC. SCIE 014 $a 2-s2.0-85019757616 $2 SCOPUS 017 70
$a 10.15376/biores.12.2.3250-3264 $2 DOI 100 $a 20170814 2017 m y slo 03 ba 101 0-
$a eng 102 $a US 200 1-
$a Influence of urea-formaldehyde adhesive modification with beech bark on chosen properties of plywood $f Ivan Ružiak ... [et al.] 330 $a The influence of beech bark concentrations as filler in urea-formaldehyde (UF) adhesives was investigated relative to the composite forming process and selected properties of final 5-layer beech plywood. Beech bark was used as filler to lower the wood processing waste production and decrease formaldehyde emissions. A combination of UF adhesives filled with different beech bark concentrations as the adhesive was used. Three different concentrations of beech bark, 15 wt.%, 20 wt.%, and 25 wt.% were used in the experiment. Urea-formaldehyde adhesive filled with 20 wt.% technical flour was used as a reference sample. The effect of the filler was studied via its temperature profile during pressing, mechanical properties in bending, water absorption, thickness swelling, and formaldehyde emissions after pressing. The time needed to reach the temperature between the beech veneers, at least 105 degrees C, which was equal to the final temperature filler-adhesive-wood matrix cross-linking, was also investigated during the pressing process. The measurements of the free formaldehyde emissions showed that for samples with non-zero bark concentrations there was a decrease of formaldehyde emissions by at least 46%. 463 -1
$1 001 umb_un_cat*0293207 $1 011 $a 1930-2126 $1 200 1 $a BioResources $v Vol. 12, no. 2 (2017), pp. 3250-3264 $1 210 $a Raleigh $c North Carolina State University $d 2017 606 0-
$3 umb_un_auth*0043667 $a drevo $X wood 606 0-
$3 umb_un_auth*0229695 $a alternatívne energetické zdroje $X alternative energy sources 615 $n 374 $a Drevo a drevospracujúci priemysel 675 $a 674 700 -1
$3 umb_un_auth*0100006 $a Ružiak $b Ivan $9 10 $4 070 701 -1
$3 umb_un_auth*0161213 $a Igaz $b Rastislav $4 070 $9 25 701 -1
$3 umb_un_auth*0000016 $a Krišťák $b Ľuboš $4 070 $9 10 701 -1
$3 umb_un_auth*0235817 $a Réh $b Roman $4 070 $9 20 701 -1
$3 umb_un_auth*0238386 $a Mitterpach $b Jozef $9 10 $4 070 701 -0
$3 umb_un_auth*0022308 $a Očkajová $b Alena $p UMBFP07 $4 070 $9 15 $f 1961- $T Katedra techniky a technológií 701 -1
$3 umb_un_auth*0140697 $a Kučerka $b Martin $p UMBFP07 $4 070 $9 10 $f 1980- $T Katedra techniky a technológií 801 -0
$a SK $b BB301 $g AACR2 $9 unimarc sk T85 $x existuji fulltexy
Počet záznamov: 1