Materiais compósitos particulados em matriz epóxi reforçados com serragem, cimento e silicato de magnésio

Missagia, Zélia Maria Velloso; Santos, Júlio César dos; Panzera, Túlio Hallak; Brandão, Lincoln Cardoso; Silva, Diogo Aparecido Lopes; Christofóro, André Luis

doi:10.1590/s1678-86212013000300017

Cited by 6 publications

(7 citation statements)

References 13 publications

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“…In recent years, several studies have demonstrated the potential for natural fibers to overcome the limitations of ER introducing natural waste into ER matrices. 4,10,11…”

Section: Introductionmentioning

confidence: 99%

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Mechanical and microstructural characterization of epoxy/sawdust (Pinus elliottii) composites

Mendes

Fleming

Goncalves

et al. 2020

Polymers and Polymer Composites

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The use of wood residues in polymeric matrices is notable for promoting significant mechanical reinforcement of the matrix. Such composites are widely used in the development of new composite materials with tunable mechanical properties for a variety of applications. In this work, polymeric composites with epoxy resin as the polymeric matrix and Pinus elliottii wood residue as the reinforcement were obtained. The composites were obtained by adding wood residue (sawdust) with particle sizes of 0.30, 0.60, and 1.19 millimeters into an epoxy matrix to determine the best mechanical properties of the composite as a function of the particle size. The polymer/sawdust composites were characterized by scanning electron microscopy (SEM), Infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and stress–strain tests. SEM images revealed a smooth and homogeneous surface free of defects and holes. However, lateral profile images showed the presence of fine sawdust particles agglomerated and a considerable number of bubbles and cavities that could interfere in the mechanical properties of the composites. The FTIR characterization of the composite identified the main bands related to epoxy and lignin/cellulose chains. The results of the mechanical properties suggested that epoxy composites with sawdust can increase its tensile strength according to the sawdust particle size introduced into the matrix.

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“…In recent years, several studies have demonstrated the potential for natural fibers to overcome the limitations of ER introducing natural waste into ER matrices. 4,10,11…”

Section: Introductionmentioning

confidence: 99%

“…The main advantage of using sawdust residue is the possibility of working with a wide range of different particle sizes; in a previous characterization, we found particles in the range of 0.074 to 2.38 mm. 10,12…”

Section: Introductionmentioning

confidence: 99%

Mechanical and microstructural characterization of epoxy/sawdust (Pinus elliottii) composites

Mendes

Fleming

Goncalves

et al. 2020

Polymers and Polymer Composites

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“…Há vários estudos desenvolvidos para o aproveitamento de subprodutos que objetivam reduzir os impactos ambientais. Pesquisas buscam soluções para essa problemática de dimensões mundiais (MISAGIA et al, 2013).…”

Section: Referencial Teóricounclassified

Produção e avaliação físico-mecânica de painéis de média e alta densidade com resíduos

Yano

Silva

2020

Ambient. constr.

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Resumo No Brasil intensificam-se os estudos visando ao aproveitamento de serragem proveniente de processos industriais para a produção de painéis de madeira com valor agregado para minimizar a exploração florestal. Neste trabalho foram estudados cinco tratamentos com misturas de partículas de madeira de marcenarias e de bagaço de cana-de-açúcar. Para homogeneização das partículas, foram realizados estudos de composição granulométrica; em seguida, foram confeccionados três painéis para cada tratamento com adição de 10% de resina poliuretana derivada de óleo de mamona e realizaram-se avaliações para determinar as propriedades físicas e mecânicas desses painéis. As propriedades físicas e mecânicas obtidas para as misturas com 50% de serragem e 50% de bagaço de cana indicaram a possibilidade de produção dos painéis para uso em ambientes internos em condições secas.

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“…Ku et al [17] found that the stiffness of microwave-cured sawdust reinforced vinyl ester composites is higher than those cured at room temperature. Missagia et al [18] revealed that the epoxy composite containing 30 wt% of Eucalyptus grandis sawdust with a particle size range of 50-80 US-Tyler increased its compressive stiffness.…”

Section: Introductionmentioning

confidence: 99%

“…the relation of the parametric entities for the density of the sandwich panels. The planar density of the sandwich panel varied from 2.33 kg/m² to18.81 kg/m². In general, the increase of the geometric cell parameters leads to higher densities.…”

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confidence: 99%

Investigations on sustainable honeycomb sandwich panels containing eucalyptus sawdust, Piassava and cement particles

Dutra¹,

Filho²,

Christofóro

et al. 2019

Thin-Walled Structures

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A full factorial design is performed to investigate a sandwich structure consisted of Piassava fibre laminates as face sheets and epoxy-based honeycomb cores containing eucalyptus sawdust and cement particles. A three-point bending test is used to evaluate the composite structure. The composite setup which achieves higher flexural modulus and strength is used as honeycomb core material. Finite element models are developed to predict the failure and the elastic flexural properties of the sandwich panels. The validated FE model is used to perform a parametric analysis identifying the effect of geometric variations on the flexural performance. The results reveal that the constructive parameters significantly affect the core shear stress, facing stress, flexural stiffness and strength in different ways and intensities.

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Materiais compósitos particulados em matriz epóxi reforçados com serragem, cimento e silicato de magnésio

Cited by 6 publications

References 13 publications

Mechanical and microstructural characterization of epoxy/sawdust (Pinus elliottii) composites

Mechanical and microstructural characterization of epoxy/sawdust (Pinus elliottii) composites

Produção e avaliação físico-mecânica de painéis de média e alta densidade com resíduos

Investigations on sustainable honeycomb sandwich panels containing eucalyptus sawdust, Piassava and cement particles

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