Banca de QUALIFICAÇÃO: ANA GOMES NEGRÃO

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
DISCENTE : ANA GOMES NEGRÃO
DATA : 19/03/2018
HORA: 09:00
LOCAL: Miniauditório do PPGAU/UFRN
TÍTULO:

Architectural components made from pineapple leaf fiber and vegetable resin

PALAVRAS-CHAVES:

architectural components; medium density panels; composites; alternative materials; vegetable fiber

PÁGINAS: 119
GRANDE ÁREA: Ciências Sociais Aplicadas
ÁREA: Arquitetura e Urbanismo
RESUMO:

The evolution of the use and development of construction materials and it´s relation with architecture was relevant for the urban population grow and consequently the grow of the cities. Along this process, the natural environment became gradually deteriorated and threatened by environmental impact as the urban expansion is associated with industrial sector growth. On this context, the continued grow of urban population induce the human been to a proportional growing need of houses resulting on. Nowadays is possible to see the new researches on national and international scenario that seeks alternative materials for traditional ones, especially biomass residue, vegetal fibers and resin, in the search of decrease the problems previously cited. This research aims the development and investigation of viability of use particleboard of pineapple leaf fiber – PALF – and vegetable resin for architectural components, as lining, sealing panel, partitions and floor. In Brazil researches with this characteristics are growing, as it´s a large country with huge vegetal cover with agricultural purposes, which produces great amount of biomass waste. About the pineapple, this country is one of the largest producers and exporters in the world, and Paraiba and Rio Grande do Norte states are among the greatest producers in the country. About vegetable fibers, the aspect most highlighted by researchers is the competitive relation with synthetic fibers is the low density – about twice lower than glass fiber for example – and associated with it´s nonabrasive nature, allows the incorporation of a larger portion of reinforcement material, inducing superlative mechanical characteristics and lighter products. So, for the development of this study, three stages was delimited, Stage I: Deepening and actualization of theoretical reference material related to the subject and systematization and analysis of collected material; Stage II: Experimental procedure: molding the composites and performing the tests; and Stage III: Analysis of the feasibility of use of composites for the construction of architectural components. For the composites, four fiber content variations were considered – 0%, 15%, 30% and 40%. After the molding process, which occurred by compression and at room temperature – aiming at an approximation with the production cycle adopted in the industry, but adapted to the laboratory environment – the physical tests were performed – moisture content, water absorption and swelling in thickness – mechanical tests – flexural, compression, tensile and impact –, microstructural – SEM – and thermal analysis – DTG. As partial results, it should be pointed out that there was an increase in the values found, considering the FFA contents in the composites, that is, composites with larger amounts of fibers, presented higher mechanical strengths, but higher moisture retention rates, water absorption and swelling in thickness. After analyzing the results, the feasibility of using the developed material was studied, comparing with normative documents in the national and international ambit, and products inserted in the market. As a partial result, the composites developed - 15%, 30% and 40% - presented viability of use in medium density composite panels, directed to internal use in as lining, sealing panel, partitions and furniture. On the above, can be say that materials made of vegetal fibers and resin, are in present one of the most interesting research area on composite materials. This concern became more evident due the exigencies of legal authorities about the use and waste of synthetic fibers petroleum derivative and better awareness for the need of natural environment and resources preservation.

MEMBROS DA BANCA:
Presidente - 1694892 - EDNA MOURA PINTO
Externo à Instituição - EDVALDO AMARO SANTOS CORREIA - IFPB
Externo à Instituição - LUCINEIDE BALBINO DA SILVA - UFPB
Interno - 1298938 - MAISA FERNANDES DUTRA VELOSO
Externo ao Programa - 3217842 - MARCOS SILVA DE AQUINO
Interno - 347627 - VIRGINIA MARIA DANTAS DE ARAUJO