Painéis de partículas de bambu e casca de amendoim com adesivo à base de mamona
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Data
2016-12-08
Autores
Nasser, Silvia Marana [UNESP]
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Universidade Estadual Paulista (Unesp)
Resumo
Na atualidade, pesquisas com painéis a base de madeira e outros materiais lignocelulósicos, como o bambu, casca de amendoim, casca de arroz, bagaço de cana de açúcar, entre outros, ganharam espaços buscando aproveitamento para os resíduos agroindustriais. Seguindo essa iniciativa, este trabalho tem como objetivo, determinar as potencialidades dos painéis de partículas aglomeradas homogêneas, construídos com bambu (B), juntamente com partículas de casca de amendoim (A), para aplicação na indústria moveleira e de construção civil, comparando os resultados obtidos nesta pesquisa com outros autores. Para tanto, foram produzidos painéis com partículas aglomeradas em quatro traços onde, através da análise das propriedades físicas e mecânicas conforme a norma brasileira NBR 14810 - 2 (2013), determinou-se os valores de inchamento em espessura 24h, absorção de água 24h, umidade, densidade, resistência a flexão (MOR e MOE), tração perpendicular e arranchamento de parafusos (topo e face). A densidade alvo dos painéis foi de 850 kg/m considerados painéis de alta densidade. O adesivo utilizado foi a poliuretana bi componente a base de óleo de mamona, na proporção de uma parte de poliol para uma parte de pré polímero (12% da massa de partícula = 157,52g). Os resultados analisados, indicam que os traços contendo bambu e amendoim, apresentaram resultados satisfatórios quando comparados à norma, e em alguns casos, com índices bem superiores aos definidos na NBR 14810-2 (2013), e por trabalhos de autores com pesquisas semelhantes. Pelos resultados aqui descritos, o material ensaiado apresenta bom potencial para fabricação de painéis de partículas, com aplicabilidade em condições secas (Tipo P4), conforme a norma, com oportunidade para estudos futuros.
Currently, research on wood-based panels and other lignocellulosic materials, such as bamboo, peanut hulls, rice hulls, sugar cane bagasse, among others, won spaces seeking to use the agroindustrial waste. Following this initiative, this study aims to determine the potential of panels of homogeneous agglomerated particles, built with bamboo (B), along with peanut shell particles (A), for use in the furniture industry and construction, comparing results obtained in this study with other authors. For this purpose, panels were produced with particles agglomerated in four traces which, by analyzing the physical and mechanical properties as the Brazilian NBR 14810-2 (2013), we determined the values of swelling in thickness 24h Water uptake 24h moisture, density, bending strength (MOR and MOE), perpendicular traction and arranchamento screws (top and side). The target density of the panels was 850 kg / m considered high density panels. The adhesive used was a bicomponent polyurethane castor oil base in proportion to one part of polyol to a part of prepolymer (12% particle mass = 157,52g). The analyzed results indicate that the traces containing bamboo and peanuts showed satisfactory results when compared to standard, and in some cases, with much higher rates to those defined in NBR 14810-2 (2013), and works by authors with similar research. The results described herein, the material tested has good potential for the production of particle board, can be applied in dry conditions (Type P4) as the norm, with opportunity for future studies.
Currently, research on wood-based panels and other lignocellulosic materials, such as bamboo, peanut hulls, rice hulls, sugar cane bagasse, among others, won spaces seeking to use the agroindustrial waste. Following this initiative, this study aims to determine the potential of panels of homogeneous agglomerated particles, built with bamboo (B), along with peanut shell particles (A), for use in the furniture industry and construction, comparing results obtained in this study with other authors. For this purpose, panels were produced with particles agglomerated in four traces which, by analyzing the physical and mechanical properties as the Brazilian NBR 14810-2 (2013), we determined the values of swelling in thickness 24h Water uptake 24h moisture, density, bending strength (MOR and MOE), perpendicular traction and arranchamento screws (top and side). The target density of the panels was 850 kg / m considered high density panels. The adhesive used was a bicomponent polyurethane castor oil base in proportion to one part of polyol to a part of prepolymer (12% particle mass = 157,52g). The analyzed results indicate that the traces containing bamboo and peanuts showed satisfactory results when compared to standard, and in some cases, with much higher rates to those defined in NBR 14810-2 (2013), and works by authors with similar research. The results described herein, the material tested has good potential for the production of particle board, can be applied in dry conditions (Type P4) as the norm, with opportunity for future studies.
Descrição
Palavras-chave
Painéis de partículas, Resíduos agroindustriais, Resistência física e mecânica, Adesivo de mamona, Particle board, Agro-industrial waste, Physical and mechanical resistance, Castor adhesive