Abstract

WOTTIZ, C. A.. Theoretical analysis of the variables influencing impregnation waterborne preservatives of tables of commercial sizes. Quebracho (Santiago del Estero) [online]. 2009, vol.17, n.1, pp.5-15. ISSN 1851-3026.

Impregnation of wood with different products is particularly important in treatments for preservation. The mass of its active substances preservative retained and the duration of the process depends on the conditions of treatment, the shape, size, density, permeability of the wood treating and viscosity of the preservative solutions. The aim of this paper is to analyze theoetically the influence of the properties of wood, the process conditions and concentration of the preservative solution in the impregnation with waterborne preservatives table size business. Estimating the time required to achieve maximum penetration of the solution in preserving timber is more realistic if we assume that the gas inside the timber will not dissolve in the solution. The total time for the preservative solution to penetrate completely into the wood is very dependent on the longitudinal permeability. For the total time not exceeding four hours of treatment, must meet the condition that the permeability can not be below k = 0.1 darcy. The maximum retention of preservative is directly proportional to the concentration of the CCA preservative solution and decreases when the density of wood increases. The factors pressure and time increases in additive on retention.

Keywords : Theoretical analysis; Impregnation; Variables; Tables; Commercial Sizes.

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