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POTENTIAL USAGE OF THE URBAN PRUNING RESIDUE FOR PRODUCTION OF WOOD BASED PANELS

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POTENCIAL DE APROVEITAMENTO DO RESÍDUO DA DESRAMA URBANA PARA PRODUÇÃO DE PAINÉIS AGLOMERADOS  O objetivo deste trabalho foi verificar o potencial de utilização do resíduo da poda urbana das madeiras de Licania tomentosa, Schinus molle e Tibouchina granulosa para produção de painéis aglomerados. Os materiais foram coletados na cidade de Jataí, Goiás, Brasil. Avaliou-se a densidade básica e análise química destes materiais. Posteriormente foram produzidos 3 painéis aglomerados de cada espécie estudada. A densidade nominal destes painéis foi de 0,60g/cm³, dimensões de 25 x 25 x 1,5cm. O adesivo utilizado foi a uréia formaldeído a 8% com base no seu teor de sólidos resinosos. O ciclo de prensagem utilizado foi de pressão nominal de 4,0 MPa, temperatura de 160° C e tempo de 15 minutos. Avaliou-se as propriedades de absorção e inchamento em espessura após 2 e 24 horas de imersão em água, densidade aparente, tração perpendicular e flexão estática. O delineamento utilizado foi o inteiramente casualizado, com utilização do teste de médias de Scott-Knott a 5% de significância. Pode-se concluir que os materiais utilizados para produção dos painéis apresentaram características de densidade básica e análise química adequada para a produção de painéis aglomerados. O resíduo que apresentou maior potencial de ser utilizado para produção de chapas aglomeradas foi a espécie Schinus molle.Keywords: Schinus molle, Licania tomentosa, chapas de madeira. ABSTRACT: The purpose of this paper was to verify the utilization potential of urban pruning residue from the woods of Licania tomentosa, Schinus molle and Tibouchina granulosa for the production of wood based panels. The materials were collected from the city of Jataí, Goiás, Brazil. The basic density and chemical analyses of these materials were evaluated. Subsequently, 3 wood based panels of each studied species were produced. The nominal density of these panels was of 0.60g/cm³, dimensions of 25 x 25 x 1.5 cm. The adhesive used was urea formaldehyde at 8% based on its content of resinous solids. The pressing cycle used will be of nominal pressure of 4.0 MPa, temperature of 160 °C and time of 15 minutes. The absorption and thickness swelling properties after 2 and 24 hours of immersion in water, apparent density, perpendicular traction and flexural strength were evaluation. The design used was entirely randomized, using the Scott-Knott average test at 5% significance. It may be concluded that the materials used for production of the panels presented basic density and proper chemical analysis characteristics for the production of wood based panels. The residue which presented greatest potential of usage for production of wood based boards was the species Schinus molle.Palavras-chave: Schinus molle, Licania tomentosa, wood boards.
Title: POTENTIAL USAGE OF THE URBAN PRUNING RESIDUE FOR PRODUCTION OF WOOD BASED PANELS
Description:
POTENCIAL DE APROVEITAMENTO DO RESÍDUO DA DESRAMA URBANA PARA PRODUÇÃO DE PAINÉIS AGLOMERADOS  O objetivo deste trabalho foi verificar o potencial de utilização do resíduo da poda urbana das madeiras de Licania tomentosa, Schinus molle e Tibouchina granulosa para produção de painéis aglomerados.
Os materiais foram coletados na cidade de Jataí, Goiás, Brasil.
Avaliou-se a densidade básica e análise química destes materiais.
Posteriormente foram produzidos 3 painéis aglomerados de cada espécie estudada.
A densidade nominal destes painéis foi de 0,60g/cm³, dimensões de 25 x 25 x 1,5cm.
O adesivo utilizado foi a uréia formaldeído a 8% com base no seu teor de sólidos resinosos.
O ciclo de prensagem utilizado foi de pressão nominal de 4,0 MPa, temperatura de 160° C e tempo de 15 minutos.
Avaliou-se as propriedades de absorção e inchamento em espessura após 2 e 24 horas de imersão em água, densidade aparente, tração perpendicular e flexão estática.
O delineamento utilizado foi o inteiramente casualizado, com utilização do teste de médias de Scott-Knott a 5% de significância.
Pode-se concluir que os materiais utilizados para produção dos painéis apresentaram características de densidade básica e análise química adequada para a produção de painéis aglomerados.
O resíduo que apresentou maior potencial de ser utilizado para produção de chapas aglomeradas foi a espécie Schinus molle.
Keywords: Schinus molle, Licania tomentosa, chapas de madeira.
 ABSTRACT: The purpose of this paper was to verify the utilization potential of urban pruning residue from the woods of Licania tomentosa, Schinus molle and Tibouchina granulosa for the production of wood based panels.
The materials were collected from the city of Jataí, Goiás, Brazil.
The basic density and chemical analyses of these materials were evaluated.
Subsequently, 3 wood based panels of each studied species were produced.
The nominal density of these panels was of 0.
60g/cm³, dimensions of 25 x 25 x 1.
5 cm.
The adhesive used was urea formaldehyde at 8% based on its content of resinous solids.
The pressing cycle used will be of nominal pressure of 4.
0 MPa, temperature of 160 °C and time of 15 minutes.
The absorption and thickness swelling properties after 2 and 24 hours of immersion in water, apparent density, perpendicular traction and flexural strength were evaluation.
The design used was entirely randomized, using the Scott-Knott average test at 5% significance.
It may be concluded that the materials used for production of the panels presented basic density and proper chemical analysis characteristics for the production of wood based panels.
The residue which presented greatest potential of usage for production of wood based boards was the species Schinus molle.
Palavras-chave: Schinus molle, Licania tomentosa, wood boards.

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