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Vpliv brušenja ivernih plošč na oprijemnost papirja, impregniranega z melaminsko smolo : diplomsko delo - univerzitetni študij = Influence of sanding of particleboards on adhesion of melamine impregnated paper : graduation thesis - university studiesPori, PavelProučevali smo vpliv kakovosti brušenja ivernih plošč (IP) na oprijemnost papirja, impregniranega z melaminsko smolo (MP). V ta namen smo uporabili tri različne končne brusne papirje (granulacije 36, ... 80 in 100). Zaradi narave procesa izdelovanja IP prihaja do različnih velikosti odbruskov, saj se bruto debeline surovih IP razlikujejo med sabo tudi za 2 mm in več. Zato smo za vsako vrsto brušenja izbrali tri debelinske tipe IP: normalne, tanke in debele, glede na njihovo debelino so se razlikovale tudi velikosti odbruskov. Za ocenjevanje čvrstosti površine smo uporabili test čvrstosti površine. Kakovost površine MP smo ugotavljali s kislinskim testom, testom s svinčniki in internim testom s svinčniki. S testom porazdelitve prostorninskih mas pa smo si pomagali pri razumevanju dobljenih rezultatov. Ugotovili smo, da imata bruto debelina IP in interval brušenja večji vpliv na kakovost oprijema MP na IP kot pa vrsta brušenja. Čvrstost površine je naraščala s finostjo brušenja do točke, na kateri se je zaradi fenomena glajenja in vtiskovanja lesnih vlaken sila čvrstosti površine znižala na vrednost grobega brušenja. S kislinskim testom smo ugotovili rahlo razliko med otrdelostjo zgornje in spodnje površine IP, hkrati pa je s finostjo brušenja naraščala otrdelost površine obložene IP. Podobno korelacijo smo opazili pri testu s svinčniki, kjer vrednost rezultata ravno tako narašča s finostjo brušenja površine brušene IP. Z internim testom s svinčniki smo ugotovili, da je rezultat testov naraščal s finostjo brušenja do tretjega, najfinejšega načina brušenja. Pri tem smo opazili, da se je vrednost rezultatov ponovno znižala pod vrednost grobega brušenja. Vzrok smo poiskali v tem, da so vrhnja vlakna obrušene IP mehansko poškodovana zaradi fenomena glajenja in vtiskovanja lesnih vlaken v površino IP, ne pa odrezovanja le-teh. Opazili smo tudi, da z naraščajočo gostoto OP IP narašča vrednost internega testa s svinčniki.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [P. Pori], 2010Language - slovenianCOBISS.SI-ID - 1819273
Author
Pori, Pavel
Other authors
Medved, Sergej |
Petrič, Marko, 1962-
Topics
iverne plošče |
brušenje |
melaminski papir |
particle board |
sanding |
melamine paper |
melamine paper
Library/institution |
City | Acronym | For loan | Other holdings |
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BF, Department of Wood Science and Technology, Lj. | Ljubljana | BFLES |
reading room 1 cop.
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Year | Impact factor | Edition | Category | Classification | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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DRS, in which the journal is indexed
Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Pori, Pavel | 34931 |
Medved, Sergej | 15410 |
Petrič, Marko, 1962- | 00395 |
Source: Personal bibliographies
and: SICRIS
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