ProLigno / ProLigno 2009 Numarul 4  
     
 
 
   
 

 

 

 

 

 

 

 

STABILIZAREA DIMENSIONALA A LEMNULUI - O PROBLEMA PRACTICA DE ACTUALITATE

Emanuela BELDEAN
Sef lucrari dr. ing. - Universitatea "Transilvania" din Brasov - Facultatea de Industria Lemnului
Adresa: B-dul Eroilor nr. 29, 500036 Brasov
Tel: +40 268 412921/int.192. Fax: +40 268 415315.
E-mail: ebeldean@unitbv.ro

Rezumat: Lucrarea prezinta un procedeu simplu si ieftin de tratare superficiala cu rasini sintetice a lemnului de fag, ca o alternativa la procedeele complexe si costisitoare de stabilizare dimensionala, cu aplicabilitate practica in mediul exterior, fara contact cu solul. Motivatia efectuarii unui astfel de studiu vine din dezideratul de crestere a duratei de exploatare si totodata, de reducere in timp a cantitatii de material lemnos utilizat, in conformitate cu noul concept de dezvoltare durabila. Rezultatele obtinute ca urmare a unor astfel de tratamente reprezinta o directie importanta de studiu si pot fi utilizate ca prima etapa in elaborarea/dezvoltarea unor noi procedee combinate de stabilizare dimensionala.

Cuvinte cheie: stabilizare dimensionala, tratare superficiala, rasini sintetice, mediu exterior, evaluare.

BIBLIOGRAFIE
BELDEAN, E. (2004). Contributii la studiul ameliorarii instabilitatii dimensionale a lemnului de fag prin tratamente superficiale (Contributions to the Study of Dimensional Instability Improvement of Beech Wood by Surface Treatments). PhD thesis. "Transilvania" University of Brasov.
BELDEAN, E., TIMAR, M.C., (2006). Long-Term Evaluation of the Effects of Surface Impregnation of Wood with Reactive Resins. Part 1: Beech Wood, Bulletin of the Transilvania University of Brasov ·Vol. 13 (48), p. 272-278.
BELDEAN, E., TIMAR, M.C., MIHAI, M.D. (2002). Influence of surface treatment on the behaviour of wood in outdoor, above ground exposure. Part I. In: Proceedings of International Conference ICWSE-2002, November, Brasov, p. 94-98.
LI, J-Z., FURUNO, T., KATOH, S., UEHARA, T. (2000). Chemical Modification of Wood by Anhydrides Without Solvents or Catalysts. In: J. Wood Science, 46: 215-221.
ROWELL, R. M. (1996). Physical and Mechanical Properties of Chemically Modified Wood. In: Wood and Cellulosic Chemistry, Ed. Hon si Shiraishi, Marcell Dekker, Inc., New York-Basel-Hong Kong, 295-311.
TIMAR, M.C. (2003). Ameliorarea lemnului (Wood Improvement). Editura Universitatii Transilvania, Brasov.
TIMAR, M.C., BELDEAN, E. (2007). Outcomes of a Long -Term Modified L-Joint Test. Part 1. Principles, Methodology and Research Opportunities. In: Proceedings of International Conference ICWSE 2007, 20-22 June 2007, Brasov, p.171-178.
TIMAR, M.C., BELDEAN, E. (2007). Wood Improvement by Heat Treatments - Principles and Opportunities for Environment Friendly Products. In: Proceedings of International Conference on Materials Sciences and Engineering BRAMAT 2007, 22-24 February 2007, p. 581-586.
TIMAR, M.C., BELDEAN, E., ZELENIUC,O. (2002): Testing of Wood for Outdoor, Above Ground Applications - A Trial of a Modified L-Joint Method In Romania. In: Proceedings of International Conference ICWSE-2002, November, Brasov, p. 87-93.
VAN ACKER, J, STEVENS, M.: A New Concept for the Evaluation of Wood Durability for Out of Ground Contact Using Accelerated L-Joint Testing. IRG/WP 97-20123, Stockholm, Sweden.
VAN ACKER, J., BRAUWERS, C., STEVENS, M.: The Accelerated L-Joint Test Method for Determination of the Out of Ground Natural Durability. IRG/WP 98-20146, Stockholm, Sweden.


 

 
Pagina creata de Costel AGACHE. Intretinere pagina Luminita Brenci. Ultima actualizare, 15 Decembrie 2010