Dimensional stabilization od tropical harwoods with polyethylene glycol
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Instituto Interamericano de Ciencias Agrícolas (IICA)
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The effect of PEG-1000 (polyethylene glycol) in controlling wood shrinkage was determined using 11 tropical wood species. Treatments were cold soaking for 2, 4, or 6 weeks followed by blast drying of the green wood (Program 1) or by a combination of air drying and blast drying (Program 11).
The result varied considerably with the species used. The optimal reduction in shrinkage was obtained with a 4-week soak, although cracking could be controlled with a 2-week treatment. Drying Program 1 can be used with species with a basic specific gravity less than 70; moderate Program II should be used with denser woods. Staining and discoloration, as well as bigroscopicity, can be controlled by manipulating the process and by properly selecting the finishing system.
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Estabilizador||stabilizers||estabilizante||agent de texture, Propiedad de la madera||wood properties||propriedade da madeira||propriété du bois, Polietileno||polyethylene||polietileno||polyéthylène, Árbol maderable||timber trees||árvore para madeira||arbre pour bois de construction, Sede Central