Odpornost lesa lubadark na lesne glive

magistrsko delo

Simon Slabe (Author), Boštjan Lesar (Reviewer), Miha Humar (Mentor), Nejc Thaler (Co-mentor)

Abstract

Ohranjanje narave in njenih virov vztrajno pridobiva na pomenu. Različne organizacije so v zadnjih letih napravile velik korak k boljšemu ozaveščanju ljudi o oskrbi za naš planet. Zato se tudi v lesarstvu trudimo, da bi povečali odstotek izkoriščanja lesne surovine. Ne zaželeno je, da bi se lesno surovino direktno uporabljalo za pridobivanje energije, a vseeno gre velik delež lesa prav v ta namen. V magistrskem delu smo želeli dokazati, da pomodrel les, ki ima precej nižjo tržno vrednost, še vedno lahko dobra vhodna surovina za proizvodnjo materialov z višjo dodano vrednostjo, kot na primer termično modificiran les. Uporaba tega lesa, pa v veliki meri zavisi od njegovih lastnosti. Zato smo pomodrelem lesu in kontrolnemu nepomodrelem lesu določili klasične sorpcijske lastnosti, dinamično sorpcijo vodne pare, izmerili stični kot, določili kapilarni vlek, lastnosti namakanja, impregnabilnost, izpiranje učinkovin, odpornost proti glivam razkrojevalkam ter, upogibno trdnost in tlačno trdnost. Na podlagi vseh teh parametrov smo videli, da pomodrel les hitreje vpija vodo a ima še vedno enake mehanske lastnosti kot nepomodrel les.

Keywords

les;lubadarka;mehanske lastnosti;sorpcijske lastnosti;odpornost lesa;razkroj;

Data

Language:	Slovenian
Year of publishing:	2017
Typology:	2.09 - Master's Thesis
Organization:	UL BF - Biotechnical Faculty
Publisher:	[S. Slabe]
UDC:	630*845
COBISS:	2815369
Views:	1221
Downloads:	349
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Resistance of the wood damaged by bark beatles to wood decay fungi
Secondary abstract:	Preserving nature and its resources is steadily gaining on importance. Different organizations have in recent years taken a substantial step to raise awareness of people on care for our planet. Therefore, in the wood industry we are working hard to increase the use of wood as a raw material. It is not optimal from any point of view to use solid wood for energetic purposees, but still a large proportion of wood is misused for this way. In this master project, we wanted to prove that coloured wood, which has a lot lower market value, can still be a good input material for production of high added value materials such as thermally modofoed wood. However the use of such material depends on its properties. For this reason we tested the coloured and non-colored control timber and defined their classic sorption properties, the dynamic sorption of water vapour, contact angle, determined capillary suction, long-term water uptake, impregnability, resistance to fungal decay, flexural strength and compressive strength. Based on all of these parameters, we have seen that the coloured wood absorbs water qucker but still has the same mechanical properties as a non-coloured timber.
Secondary keywords:	wood;lubricant;mechanical properties;sorption properties;wood resistance;decomposition;
Type (COBISS):	Master's thesis/paper
Study programme:	0
Thesis comment:	Univ. v Ljubljani, Biotehniška fak., Oddelek za lesarstvo
Pages:	X, 52 f.
ID:	10910370