Utekočinjanje lesa s pomočjo ultrazvoka in izdelava ivernih plošč z uporabo lepilnih mešanic z dodanim utekočinjenim lesom

Nataša Čuk (Author), Matjaž Kunaver (Author), Edita Jasiukaityte (Author), Sergej Medved (Author)

Abstract

Les lahko utekočinimo in uporabimo za sintezo različnih polimernih materialov, med drugim tudi za lepila. Glavni cilj naše raziskave je bil uporabiti utekočinjen les za pripravo lepila za iverne plošče ter določiti fizikalne in mehanske lastnosti izdelanih plošč. Določili smo čas želiranja različnih lepilnih mešanic v odvisnosti od deleža utekočinjenega lesa, vrste ter deleža katalizatorja in temperature. Za izdelavo ivernih plošč smo uporabili melamin-formaldehidno lepilo, ki smo mu dodali utekočinjen les in amonijev formiat kot katalizator. Ugotavljali smo vpliv deleža dodanega utekočinjenega lesa, vrste ter deleža katalizatorja in temperature stiskanja. Rezultati so pokazali, da se je čas želiranja z večanjem deleža dodanega utekočinjenega lesa podaljšal, z večanjem deleža katalizatorja in višanjem temperature pa skrajšal. Optimalne lastnosti ivernih plošč smo dosegli pri deležu utekočinjenega lesa 30 %, deležu katalizatorja 3 % in temperaturi stiskanja 180 °C.

Keywords

melamin-formaldehidno lepilo;iverne plošče;melamin-urea-formaldehidno lepilo;obnovljivi viri;utekočinjen les;

Data

Language:	Slovenian
Year of publishing:	2012
Typology:	1.08 - Published Scientific Conference Contribution
Organization:	UL BF - Biotechnical Faculty
UDC:	630861:630813
COBISS:	2021513
ISSN:	0024-1067
Views:	1032
Downloads:	430
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Liquefaction of wood using ultrasound and production of particleboards using adhesive mixtures with added liquefied wood
Secondary abstract:	Wood can be liquefied and used for the synthesis of different polymer materials as well as for the adhesives. The aim of our research was to evaluate the utilization of liquefied wood as a part of an adhesive mixture in particleboard production and to assess physical and mechanical properties of produced particleboards. We determined gelation time for different adhesive mixtures depending on the liquefied wood portion, the type and the amount of the catalyst and temperature. For particleboard production, we used melamine-formaldehyde resin with added liquefied wood and ammonium formate as a catalyst. We examined the influence of liquefied wood portion, the type and the amount of the catalyst and pressing temperature on the particleboard properties. Results showed that gelation time increased with higher liquefied wood portion and decreased as the amount of catalyst and temperature increased. The optimal properties of particleboards were obtained at 30 % portion of liquefied wood, at 3 % amount of the catalyst and at pressing temperature of 180°C.
Secondary keywords:	particleboards;melamine-formaldehyde adhesive;melamine-urea-formaldehyde adhesive;renewable resources;liquefied wood;
File type:	application/pdf
Type (COBISS):	Not categorized
Pages:	str. 116-122
Volume:	ǂLetn. ǂ64
Issue:	ǂšt. ǂ5
Chronology:	2012
ID:	9156666