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Ciência Florestal
Centro de Pesquisas Florestais - CEPEF, Departamento de Ciências Florestais - DCFL, Programa de Pós Graduação em Engenharia Florestal - PPGEF
ISSN: 0103-9954
EISSN: 0103-9954
Vol. 20, No. 3, 2010, pp. 501-511
Bioline Code: cf10042
Full paper language: Portuguese
Document type: Research Article
Document available free of charge

Ciência Florestal, Vol. 20, No. 3, 2010, pp. 501-511

 pt Resistência de painéis aglomerados produzidos com diferentes proporções de madeira e casca de de arroz a fungos e cupins xilófagos
de Melo, Rafael Rodolfo; Santini, Elio José; Haselein, Clovis Roberto; Garlet, Alencar; Paes, Juarez Benigno & Stangerlin, Diego Martins

Resumo

Foi avaliada a resistência a fungos apodrecedores e a cupins subterrâneos de painéis aglomerados produzidos com diferentes proporções de madeira e casca de arroz. As chapas foram produzidas utilizando a madeira de Eucalyptus grandis check for this species in other resources com a inclusão de casca de arroz nas proporções de 0, 20, 40, 60, 80 e 100%, utilizando como aglutinante as resinas uréia-formaldeído e tanino-formaldeído. Os resultados obtidos indicaram que, painéis produzidos com casca de arroz geralmente apresentam maior resistência ao ataque de fungos apodrecedores e aos cupins subterrâneos. Painéis colados com tanino-formaldeído foram mais resistentes ao ataque dos térmitas, enquanto que, para os fungos, foi detectada diferença significativa entre o efeito dos adesivos apenas quando submetidas ao ataque de Gloeophyllum trabeum check for this species in other resources , sendo as chapas produzidas com uréia-formaldeído as mais resistentes. Dentre os fungos, Trametes versicolor check for this species in other resources proporcionou uma maior perda de massa aos painéis.

Palavras-chave
painéis reconstituídos; resíduos agrícolas; resistência ao apodrecimento; cupins subterrâneos

 
 en Decay and termite resistance of particleboard made with different proportions of wood and rice husk
de Melo, Rafael Rodolfo; Santini, Elio José; Haselein, Clovis Roberto; Garlet, Alencar; Paes, Juarez Benigno & Stangerlin, Diego Martins

Abstract

Decay resistance against fungi and termite of particleboard made with different proportions of wood ( Eucalyptus grandis check for this species in other resources ) and rice husk was studied. Particleboard with 0, 20, 40, 60, 80 and 100% proportions of rice husk was produced using urea-formaldehyde and tannin-formaldehyde as adhesives. Particleboards produced with rice husk presented a higher resistance against fungi and termite attack. Particleboards glued with tannin-formaldehyde were more resistant to the attack of termites; for fungi, the difference between adhesives was observed when these particleboards were submitted to the attack of Gloeophyllum trabeum check for this species in other resources , in which case the particleboards produced with urea-formaldehyde were more resistant. Trametes versicolor check for this species in other resources was the fungus that caused the largest mass loss to the particleboards.

Keywords
particleboard; agriculture residues; decay resistance; subterranean termites.

 
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