Hybrid polymeric composites reinforced with sisal fibres and silica microparticles

Silva, Leandro José da; Panzera, Túlio Hallak; Velloso, Vânia Regina; Christofóro, André Luis; Scarpa, Fabrizio

doi:10.1016/j.compositesb.2012.01.026

Cited by 68 publications

(23 citation statements)

References 18 publications

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“…Sua polaridade dificulta a interação destes com a matriz polimérica apolar, sendo necessário o uso de agentes compatibilizantes aumentando a área interfacial entre matriz/carga objetivando melhorias significativas nas propriedades do compósito [13] . As propriedades de resistência à tração, flexão e módulo de elasticidade podem atingir valores superiores com o uso de agente compatibilizante [14,15] e com a seleção correta do tipo e do percentual de carga vegetal [16] . Alguns dos compatibilizantes mais utilizados em compósito termoplástico com carga vegetal são os baseados em anidrido maleico, silanos ou peróxidos de polietileno, promovendo uma boa adesividade interfacial entre as fibras e a matriz [13,17] .…”

Section: Preparação Das Amostrasunclassified

Avaliação das propriedades mecânicas e morfológicas de compósitos de PEAD com pó de Pinus taeda e alumina calcinada

et al. 2015

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ResumoNeste estudo foram desenvolvidos compósitos utilizando PEAD, pó de madeira (Pinus taeda), alumina calcinada e dois diferentes tipos de agentes compatibilizantes para avaliação das propriedades morfológicas e mecânicas dos mesmos. Para aumentar a interação entre a matriz polimérica e o pó de madeira foram utilizados 2% de polietileno graftizado com anidrido maleico em todas as formulações. Para efeito comparativo foi desenvolvida uma formulação com viniltrietoxisilano como compatibilizante para a alumina calcinada. O teor de cargas variou de 4% a 33% para os compósitos de carga única e mantiveram o percentual de 28% para os compósitos com as duas cargas. A interação entre a matriz polimérica e as cargas, proporcionada pelo agente compatibilizante anidrido maleico, foi observada nas micrografias da interface da matriz/carga. A utilização do silano não proporcionou efeito adicional nas propriedades mecânicas dos compósitos. Os compósitos isentos de alumina apresentaram maior resistência à tração, porém na resistência à flexão a presença da alumina contribuiu para o aumento desta propriedade provavelmente devido à pequena interação existente entre a interface do seu grão e a matriz polimérica. Palavras-chave: compósito, PEAD, pó de madeira, alumina calcinada, anidrido maleico. AbstractThis work aims at the evaluation of morphological and mechanical properties of HDPE composites developed with wood flour (Pinus taeda), calcined alumina and two different types of compatibilizing agents. In order to improve the interaction between the polymer matrix and wood flour 2% maleic anhydride-grafted polyethylene was used in all formulations. For comparison a formulation with triethoxyvinylsilane as compatibilizer for the calcined alumina was developed. The filler content ranged from 4% to 33% for the single filler composite while the percentage of 28% was kept as such for the two-fillers composites. The interaction between the polymer matrix and fillers, provided by the maleic anhydride compatibilizer agent, could be observed in the micrographs of the matrix / filler interface. The silane did not improve the mechanical properties of the composite. Free alumina composites showed higher tensile strength, but concerning flexural strength the presence of alumina contributed to increased values in this property. This was probably caused by the reduced interaction between the interface of its grain and the polymer matrix.

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Section: Preparação Das Amostrasunclassified

Avaliação das propriedades mecânicas e morfológicas de compósitos de PEAD com pó de Pinus taeda e alumina calcinada

et al. 2015

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“…Natural fibers have comparatively low mechanical strengths, to overcome this issue the natural fibers are hybridized with synthetic fibers . According to Silva et al . the mechanical properties of sisal fiber ‐ reinforced composites has been considerably improved by adding silica micro‐particles.…”

Section: Introductionmentioning

confidence: 99%

Influence of fiber orientation and fiber content on properties of sisal‐jute‐glass fiber‐reinforced polyester composites

Ramesh¹,

Palanikumar

Reddy

2015

J of Applied Polymer Sci

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The incorporation of natural fibers with polymer matrix composites (PMCs) has increasing applications in many fields of engineering due to the growing concerns regarding the environmental impact and energy crisis. The objective of this work is to examine the effect of fiber orientation and fiber content on properties of sisal‐jute‐glass fiber‐reinforced polyester composites. In this experimental study, sisal‐jute‐glass fiber‐reinforced polyester composites are prepared with fiber orientations of 0° and 90° and fiber volume of sisal‐jute‐glass fibers are in the ratio of 40:0:60, 0:40:60, and 20:20:60 respectively, and the experiments were conducted. The results indicated that the hybrid composites had shown better performance and the fiber orientation and fiber content play major role in strength and water absorption properties. The morphological properties, internal structure, cracks, and fiber pull out of the fractured specimen during testing are also investigated by using scanning electron microscopy (SEM) analysis. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 42968.

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“…Engineers have already succeeded to implement natural fibers in the production of bio-composite materials that are suitable for secondary structural applications on an industrial scale [2]. Many researchers have performed the mechanical characterization of different types of natural fibers and their composites [3][4][5][6]. Some works in open literature show comparative studies to identify which natural fiber have superior mechanical properties [7].…”

Section: Introductionmentioning

confidence: 99%

Multi-axial mechanical characterization of jute fiber/polyester composite materials

Dobah

Bourchak

Bezazi

et al. 2016

Composites Part B: Engineering

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The work describes the mechanics of novel woven jute fibers reinforced polyester (JFRP) laminates under uniaxial and multi-axial static and fatigue loading cases. JFRP laminates with 25 % fibre volume fraction (FVF) have been manufactured using a hand-layup molding technique at a low pressure. Static uniaxial tests have shown that these novel bio-reinforced laminates have an ultimate tensile strength around 42 MPa under tensile loading and 7.5 N-m under torsional loading. The Multi-axial (tension/torsion) static tests yield an ultimate strength of 21.7 MPa and 5 N-m for tensile and torsion loading conditions, respectively.Fatigue tests have been carried out under displacement and angular control at three different loading levels with a frequency of 5Hz. The fatigue tests results are extensively analyzed using stiffness degradation behavior, hysteresis loops, energy dissipation and strain versus number of cycles (ɛ-N) diagrams. The fatigue endurance limit (over one million cycles) for JFRP is achieved at a stress level of 65% of ultimate displacement. The implication of this work is the use of these materials in areas such as car and aircraft interiors promises to significantly reduce weight, cost and carbon footprints without sacrificing performance.

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Hybrid polymeric composites reinforced with sisal fibres and silica microparticles

Cited by 68 publications

References 18 publications

Avaliação das propriedades mecânicas e morfológicas de compósitos de PEAD com pó de Pinus taeda e alumina calcinada

Avaliação das propriedades mecânicas e morfológicas de compósitos de PEAD com pó de Pinus taeda e alumina calcinada

Influence of fiber orientation and fiber content on properties of sisal‐jute‐glass fiber‐reinforced polyester composites

Multi-axial mechanical characterization of jute fiber/polyester composite materials

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