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    <subfield code="a">Efeito do Tratamento T&#xE9;rmico com &#xD3;leo de Soja na Madeira de Pinus</subfield>
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RESUMO

Este trabalho teve como objetivo avaliar a influ&#xEA;ncia do tratamento t&#xE9;rmico em &#xF3;leo de soja sobre
algumas propriedades f&#xED;sicas da madeira de Pinus sp., sendo avaliadas a varia&#xE7;&#xE3;o dimensional,
massa espec&#xED;fica, empenamento e rachaduras em amostras com espessuras de 5 mm e 20 mm.
As amostras foram submetidas ao tratamento t&#xE9;rmico &#xE0; temperatura de 80 &#xB0;C e 160 &#xB0;C com tempo
de 20 e 40 minutos, com e sem imers&#xE3;o posterior em &#xF3;leo frio. Foram realizadas compara&#xE7;&#xF5;es com
amostras testemunhas a 12% de umidade. Os resultados demonstraram que os fatores de maior
efeito do tratamento t&#xE9;rmico com &#xF3;leo de soja sobre as propriedades foram: maior temperatura
de tratamento t&#xE9;rmico (160 &#xB0;C); menor espessura inicial (5 mm); maior tempo de tratamento
(40 minutos) e imers&#xE3;o em &#xF3;leo frio ap&#xF3;s o tratamento t&#xE9;rmico. Os efeitos do tratamento t&#xE9;rmico
associado &#xE0; imers&#xE3;o em &#xF3;leo frio resultaram em menores contra&#xE7;&#xF5;es e empenamentos e no
aumento dos valores da massa espec&#xED;fica.

Palavras-chave: propriedades f&#xED;sicas, varia&#xE7;&#xE3;o dimensional, contra&#xE7;&#xE3;o, massa
espec&#xED;fica, empenamento.




Effect of Thermal Treatment With Soybean Oil on Wood Pinus

ABSTRACT

This study aimed to evaluate the influence of heat treatment on soybean oil with some physical
properties of Pinus sp wood, being evaluated the dimensional variation, density, warping and
cracking in samples with 5 mm and 20 mm thicknesses. The samples were submitted to heat
treatment at a temperature of 80 &#xB0;C to 160 &#xB0;C, for 20 and 40 minutes, with and without subsequent
immersion in cold oil. Comparisons were made with control samples, to 12% moisture content.
The results demonstrated that the factors of greater effect of the thermal treatment with soybean oil
on the properties were: high-temperature heat treatment (160 &#xB0;C); lower initial thickness (5 mm);
longer treatment (40 minutes) and immersion in cold oil after the heat treatment. The effects of
the heat treatment associated with immersion in cold oil resulted in lower shrinkage and warp
and in the increase in density values.

Keywords: physical properties, dimensional variation, shrinkage, density, warp.</subfield>
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    <subfield code="d">Rio de Janeiro-RJ Instituto de Florestas - UFRRJ 1994</subfield>
    <subfield code="o">2025-0444</subfield>
    <subfield code="t">Floresta e Ambiente (Brazil)</subfield>
    <subfield code="x">1415-0980  /  ISSN 2179-8087 0nline</subfield>
    <subfield code="g">v. 24 p. 1-10; (2017)</subfield>
    <subfield code="w">BR2026000268</subfield>
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