Boštjan Lesar (Author), Martin Zupančič (Author), Miha Humar (Author)

Abstract

V raziskavi smo poučevali vpliv postopka impregnacije ter vrste emulzije montana voska na retencijo, globino penetracije in porazdelitev v lesu smreke (Picea abies). Uporabili smo tri postopke impregnacije: vakuumsko-tlačni, vakuumski in premazovanje. Navzem smo določili gravimetrično. Po impregnaciji smo iz vzorcev pripravili anatomske preparate, na katerih smo pod mikroskopom,preučevali globino prodora in porazdelitev montana voska v vzorcih. Ugotovili smo, da je največ voska prodrlo v aksialni smeri, medtem koje vosek v prečni smeri prodrl le v prve poškodovane celice na površini. Z vakuumsko tlačnim postopkom impregnacije smo v aksialni smeri dosegli globlji prodor voska, ki je presegel dolžino traheid. Delež voska v emulziji ni znatno vplival na globino prodora, medtem ko je vplival na količino oziroma zapolnjenost celic z voskom.

Keywords

globina penetracije;montana vosek;smreka;zaščita lesa;

Data

Language: Slovenian
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL BF - Biotechnical Faculty
UDC: 630*841
COBISS: 1675401 Link will open in a new window
ISSN: 0024-1067
Views: 41
Downloads: 7
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Other data

Secondary language: English
Secondary title: Microscopic analysis of wood impregnated with aqueous montan wax emulsion
Secondary abstract: Influence of impregnation procedure, type of montan wax emulsion on retention,penetration and distribution in Norway spruce (Picea abies) wood was investigated. Three different procedures were applied: vacuum-pressure, vacuum and brushing. After wood impregnation microscopic sections were prepared for determination of penetration and distribution of montan wax in wood under the microscope. The results showed that the greatest part of the wax emulsion penetrated in wood in axial direction, while in radial or tangential direction the wax emulsion penetrated trough the upper layer of cells only. Using the vacuum pressure technique, the wax penetrated deeper and the depth of penetration exceeded the average tracheid length. Concentration of wax emulsions did not influence the depth of penetration, butit has a considerable influence on filling of cell lumina with wax.
Secondary keywords: depth of penetration;montan wax;Norway spruce (Picea abies);wood preservation;
Type (COBISS): Article
Pages: str. 320-326
Volume: ǂLetn. ǂ60
Issue: ǂšt. ǂ9
Chronology: 2008
ID: 16015592