Mechanical properties of epoxy resin based on granite stone powder from the Sergipe fold-and-thrust belt composites

Gonçalves, Jussara Maria; Campos, D.A.; Oliveira, Gislane de Jesus; Rosa, Maria de Lourdes da Silva; Macêdo, M.A.

doi:10.1590/s1516-14392014005000100

Cited by 24 publications

(8 citation statements)

References 40 publications

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“…At higher filler loading, the cross-linking and stacking of the polymer system increases and thus reduces the movement of polymer molecules. Consequently, the matrix shows a brittle behavior [ 36 ]. The change in the mechanical properties of the composites at higher concentrations of biochar fillers is probably due to uneven dispersion of the particles in the low density polymer matrix and the powder-like nature of the biochar filler [ 37 ].…”

Section: Resultsmentioning

confidence: 99%

Low-Cost Carbon Fillers to Improve Mechanical Properties and Conductivity of Epoxy Composites

et al. 2017

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Abstract:In recent years, low-cost carbons derived from recycled materials have been gaining attention for their potentials as filler in composites and in other applications. The electrical and mechanical properties of polymer composites can be tuned using different percentages and different kind of fillers: either low-cost (e.g., carbon black), ecofriendly (e.g., biochar), or sophisticated (e.g., carbon nanotubes). In this work, the mechanical and electrical behavior of composites with biochar and multiwall carbon nanotubes dispersed in epoxy resin are compared. Superior mechanical properties (ultimate tensile strength, strain at break) were noticed at low heat-treated biochar (concentrations 2-4 wt %). Furthermore, dielectric properties in the microwave range comparable to low carbon nanotubes loadings can be achieved by employing larger but manageable amounts of biochar (20 wt %), rending the production of composites for structural and functional application cost-effective.

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Section: Resultsmentioning

confidence: 99%

Low-Cost Carbon Fillers to Improve Mechanical Properties and Conductivity of Epoxy Composites

et al. 2017

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“…The Figure 2 shows hall the medium and fine gravel fills the spaces between the coarse ones, also it is possible to observe the irregular gravel surface that favors composite phases anchorage. There was no sign of chemical fixing, as envisaged by literature [9,18], between the material phases.…”

Section: Methodsmentioning

confidence: 95%

“…Polymer matrix granite particle composites have been widely used since the mid 1970s [14] in machine tool structures, and in general measuring and analysis devices [15,16], particularly due to its high vibration absorption capacity compared to common structural materials. Synthetic granite composites are still advantageous because it allows the inserts application in the functional parts of the equipment, fluid and spinning ducts, voids of mass relief, lifting inserts and still allows the use of industrial waste, conferring an advantageous environmental and economic character to the material [15,17,18].…”

Section: Introductionmentioning

confidence: 99%

Synthetic granite composite for precision equipment structures

Lovo¹,

Pedroso²,

Erbereli³

et al. 2018

Matéria (Rio J.)

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The structure is a component that plays an extremely important role in the equipment's performance, it must withstand efforts without compromising the function, receive and transfer heat, dampen vibrations and position the elements, as well as promote ergonomics and aesthetics. In lightweight and precision equipment's the raw material used must also allow thin walls, rigid, resistant and low density. The objective of the present work is the development of a synthetic granite composite for manufacturing of equipment's structures. For this, an abundant Brazilian granite, a high strength epoxy resin and segmented carbon fibers were selected as materials. Test specimens, with maximized packing with granite gravel less than 2.0 mm were fabricated and tested for tensile strength, compression, flexural, damping, hardness, dilatometry, thermal conductivity and density. The maximized composition supported flexural stresses above 42 MPa, without fiber reinforcement and 51 MPa with carbon fiber reinforcement. The damping coefficient was about 7 times higher than cast iron, coefficient of thermal expansion of 1.4E-05 m/m.K, thermal conductivity coefficient of 1.2 W/m.K and density of 2.1 g/cm³. The developed composite showed potential for refining structures, with ease of molding of thin-walled elements, use of inserts, re-machining, providing economical manufacture of single parts, and is still able to perform the function with high damping coefficient and low weight.

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“…An optimum reinforcement composition of 50% must be used to attain a maximum compression strength in the composites. 13…”

Section: Introductionmentioning

confidence: 99%

Effect of particle sizes on the mechanical behaviour of limestone-reinforced hybrid plastics

Vinayagamoorthy

2019

Polymers and Polymer Composites

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The present research has been made to investigate the characteristics of a new composite material made up of limestone as particle reinforcement. New composites are made by taking limestone particles in five different sizes and jute as woven reinforcement in polypropylene matrix. Mechanical characteristics of the composites that include strengths against tension, compression, flexural, impact and hardness are evaluated and a comparative investigation is made among the composites. The effect of particle size on the properties is analysed and found that the composite with medium particle size bears the highest strength in all aspects. In addition, microscopic image analysis is carried out to investigate the distribution of particles, bonding capacity and other morphologies. The results showed that limestone will be apt particle reinforcement and its presence enhances all the characteristics of the composite.

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Mechanical properties of epoxy resin based on granite stone powder from the Sergipe fold-and-thrust belt composites

Cited by 24 publications

References 40 publications

Low-Cost Carbon Fillers to Improve Mechanical Properties and Conductivity of Epoxy Composites

Low-Cost Carbon Fillers to Improve Mechanical Properties and Conductivity of Epoxy Composites

Synthetic granite composite for precision equipment structures

Effect of particle sizes on the mechanical behaviour of limestone-reinforced hybrid plastics

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