Produção e análise de painéis particulados de Corymbia Citriodora com adição de fibras de coco
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Data
2020-06-24
Autores
Silva, Gilma Maria Sobral da
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Universidade Estadual Paulista (Unesp)
Resumo
O uso de produtos à base de materiais particulados e chapa de fibras é crescente a cada ano, pois sua manufatura além de maximizar o aproveitamento da madeira como matéria-prima, obtém um produto confiável e de ótima qualidade, a produção de compostos homogêneos a base de madeira e fibras não utilizadas pela indústria padrão lhe conferem a estes insumos maior valor agregado. O presente trabalho teve por objetivo desenvolver e analisar painéis particulados a base de partículas de Corymbia Citriodora com a adição da Fibras de Coco Mucifera analisando suas características físicas e mecânicas. Para isso foram estudadas as propriedades físicas e mecânicas segundo recomendação da norma técnica brasileira 14810-2 (2018). A densidade alvo foi de 850 kg/m³, o que o define como painel de alta densidade. Foram fabricados quatro traços, sendo o primeiro com 100% madeira de corymbia, o segundo 90% corymbia e 10% coco, o terceiro 80% corymbia e 20% coco e o quarto 70% corymbia e 30% coco. Foram realizados ensaios físicos de densidade, absorção de água, inchamento em espessura 24h e umidade e os ensaios de resistência mecânica como de flexão estática e módulo de elasticidade e tração perpendicular. A quantidade de adesivo bi-componente de mamona utilizada foi de 10% do peso total do material seco e depois de prontos e avaliados os resultados foram tratados estatisticamente. A produção destes permitiu a confecção de painéis com apropriada aderência da resina nas partículas e fibras garantindo a padronização nas placas produzidas, e ao analisar os resultados foi possível observar nos ensaios físicos que houve uma piora crescente na medida em que se adiciona maiores porcentagens da fibra de coco. O mesmo ocorreu nos ensaios mecânicos.
The use of particulate matter and fiberboard products is increasing every year, as its manufacture, besides maximizing the use of wood as a raw material, results in a reliable and high-qualityproduct, and theproduction of homogeneous compounds. Woodand fibers not used by the industry standard give these inputs a higher added value. The present work aimed to develop and analyze particulate panels based on Corymbia Citriodoraparticles with the addition of Coco Muciferafibers analyzing their physical and mechanical characteristics. For this will be studied the physical and mechanical properties according to the recommendation of NBR 14810-2 (2018). The target density was 850 kg / m³, which defines it as a high-densitypanel. Four traces were made, the first with 100% Corymbiawood, the second 90% Corymbiaand 10% coconut, the third 80% Corymbiaand 20% coconut and the fourth 70% Corymbiaand 30%coconut. Physical tests of Density, water absorption, swelling in thickness 24h and humidity were performed and the mechanical tests of static flexion and modulus of elasticity and perpendicular traction. The amount of castor bean bi-component adhesive used was 10% of the total weight of the dried material and after the results were evaluated and statistically treated. Their production allowed the manufacture of panels with appropriate resin adhesion on the particles and fibers ensuring the standardizationon theproduced plates. By analyzing the results,it was possible to observe in the physical tests that there was a growing worsening as higher percentages of the fiber were added. The same occurred in mechanical tests.
The use of particulate matter and fiberboard products is increasing every year, as its manufacture, besides maximizing the use of wood as a raw material, results in a reliable and high-qualityproduct, and theproduction of homogeneous compounds. Woodand fibers not used by the industry standard give these inputs a higher added value. The present work aimed to develop and analyze particulate panels based on Corymbia Citriodoraparticles with the addition of Coco Muciferafibers analyzing their physical and mechanical characteristics. For this will be studied the physical and mechanical properties according to the recommendation of NBR 14810-2 (2018). The target density was 850 kg / m³, which defines it as a high-densitypanel. Four traces were made, the first with 100% Corymbiawood, the second 90% Corymbiaand 10% coconut, the third 80% Corymbiaand 20% coconut and the fourth 70% Corymbiaand 30%coconut. Physical tests of Density, water absorption, swelling in thickness 24h and humidity were performed and the mechanical tests of static flexion and modulus of elasticity and perpendicular traction. The amount of castor bean bi-component adhesive used was 10% of the total weight of the dried material and after the results were evaluated and statistically treated. Their production allowed the manufacture of panels with appropriate resin adhesion on the particles and fibers ensuring the standardizationon theproduced plates. By analyzing the results,it was possible to observe in the physical tests that there was a growing worsening as higher percentages of the fiber were added. The same occurred in mechanical tests.
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Painéis reconstituídos, Resíduos, Compósitos, Reconstituted panels, Waste, Composites