IMPROVEMENT OF WOOD TREATABILITY IN REFRACTORY TO IMPREGNATION CONIFER SPECIES BY SURFACE DRILLING WITH LASER

Abstract: 

Wood needs protection by impregnation with various wood preservatives, particularly when it is used in exterior or semi-exterior service conditions, in order to increase its duration. Greece is a country with a great deficit in the production of wood for technical use.

With the present proposal, it is attempted to increase the number of species intented to be used for specific uses outdoors after proper protective processes so that to increase the service life of wood products and to save wood raw materials. Fir and spruce are two wood productive conifer species in Greece but they are not used in exterior conditions (poles, wooden houses, cladding, etc.) because they exhibit low durability and impregnation with traditional impregnation methods is difficult and not effective. Thus, for conifer species, only pine is used for the above uses since it is permeable and it is impregnated easily.

The use of laser beams to create surface micro-holes of small depth on the surfaces of the above species is expected to increase their permeability and impregnability so that these species to be, also, used for the same products as pine in exterior conditions. The possibility of increasing the impregnability of the above two species by using laser beams is necessary first to be investigated in laboratory conditions and then to be transferred to industrial conditions in order to find the optimum application techniques of laser beams to create the surface pattern of holes.

The present investigation will include:

  1. to get wood material (logs) from fir and spruce forests,
  2. to transfer and process the wood material to local sawmills and university laboratories,
  3. to use laser beams in order to create the optimum surface-hole pattern on wood,
  4. to impregnate the laser processed wood material with wood preservatives, and
  5. to assess the results, to compare them with control wood material and to investigate any effect of the laser-beam process on wood mechanical strength.

Project info

Acronym:
WOODLASER
Coordinating Institution:
Aristotle University of Thessaloniki
Scientific Coordinator:
Voulgaridis Elias
Research Team 2 Leader:
Passialis Constantinos
Research Team 3 Leader:
Moustaizis Stavros
Research Team 4 Leader:
Adamopoulos Stergios

Stats

I.D.:
1391
Mis:
377333
Duration (months):
44
Budget:
600 000.00
Diavgeia:
ΑΔΑ: Β4ΛΑ9-ΖΩΣ

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