Tensile, Impact, and Thermal Properties of an Epoxynovolac Matrix Composites with Cuban Henequen Fibers

Soto, A. A. Rodríguez; Rivera, Joshua; Borges, Laura; Palomares, Juan

doi:10.1007/s11029-018-9744-6

Cited by 10 publications

(5 citation statements)

References 10 publications

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“…In both cases, there is a tendency to increase the parameter values by increasing the quantity of reinforcement. Some small decreases are observed for

and 28 wt%, similar to what occurs under constant stress over time [ 38 ]. The first is due to insufficient reinforcing action of the fibers and the second is due to the critical fiber/matrix ratio being exceeded.…”

Section: Resultsmentioning

confidence: 56%

“…The studied material is an epoxy-matrix composite with random long vegetable fibers, see Figure 3 a, described in [ 38 ]. The used polymer was PoliResinNovolac, provided by Polinova Company, Rio de Janeiro, Brazil.…”

Section: Methodsmentioning

confidence: 99%

“…All tests were conducted on a standard universal traction machine Instron 5567 with a maximum force of 30 kN, at room temperature 25 °C and

humidity. The strain and stress levels were selected to ensure non-breakage of the specimens, taking into account the results of a previous work [ 38 ]. The strain and stress data values were taken from the experimental points, that were measured every

s.…”

Section: Methodsmentioning

confidence: 99%

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Parameter Identification of Fractional Index Viscoelastic Model for Vegetable-Fiber Reinforced Composite

et al. 2022

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In the present work, parameters for adapting the behavior of the uniaxial three-element viscoelastic constitutive model with integer and fractional index derivatives to the mechanical evolution of an epoxy-composite material reinforced with long random henequen fibers, were determined. Cyclic loading–unloading with 0.1%, 0.2%, 0.3%, …, 1.0% controlled strain and staggered fluency experiments at 5 MPa, 10 MPa, and 15 MPa constant tension were performed in stages, and the obtained data were used to determine and validate the model’s parameter values. The Inverse Method of Identification was used to calculate the parameters, and the Particle Swarm Optimization (PSO) method was employed to achieve minimization of the error function. A comparison between the simulated uniaxial results and the experimental data is demonstrated graphically. There exists a strong dependence between properties of the composite and the fiber content (0 wt%, 9 wt%, 14 wt%, 22 wt%, and 28 wt% weight percentage fiber/matrix), and therefore also of the model parameter values. Both uniaxial models follow the viscoelastic behavior of the material and the fractional index version presents the best accuracy. The latter method was noted to be adequate for determination of the aforementioned constants using non-large experimental data and procedures that are easy to implement.

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“…In both cases, there is a tendency to increase the parameter values by increasing the quantity of reinforcement. Some small decreases are observed for

Section: Resultsmentioning

confidence: 56%

Section: Methodsmentioning

confidence: 99%

“…All tests were conducted on a standard universal traction machine Instron 5567 with a maximum force of 30 kN, at room temperature 25 °C and

s.…”

Section: Methodsmentioning

confidence: 99%

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Parameter Identification of Fractional Index Viscoelastic Model for Vegetable-Fiber Reinforced Composite

et al. 2022

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“…Natural fibres were used without any surface treatment. The results revealed that the introduction of Cuban henequen fibres into composites led to higher tensile and impact strength compared with that of a pure matrix [111].…”

Section: Henequenmentioning

confidence: 98%

Revolutionizing Sustainable Nonwoven Fabrics: The Potential Use of Agricultural Waste and Natural Fibres for Nonwoven Fabric

Gaminian,

Ahvazi,

Vidmar

et al. 2024

Biomass

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There has been a growing interest in recycling and upcycling different waste streams due to concerns for environmental protection. This has prompted the desire to develop circular economies and optimize the utilization of bioresources for different industrial sectors. Turning agricultural and forestry waste streams into high-performance materials is a promising and meaningful strategy for creating value-added materials. Lignocellulose fibres from plants are emerging as a potential candidate for eco-friendly feedstock in the textile industry. Nonwoven fabric is one of the most innovative and promising categories for the textile industry since it currently utilizes about 66% synthetic materials. In the upcoming wave of nonwoven products, we can expect an increased utilization of natural and renewable materials, particularly with a focus on incorporating lignocellulosic materials as both binders and fibre components. The introduction of low-cost fibres from waste residue materials to produce high-performance nonwoven fabrics represents a shift towards more environmentally sustainable paradigms in various applications and they represent ecological and inexpensive alternatives to conventional petroleum-derived materials. Here, we review potential technologies for using agricultural waste fibres in nonwoven products.

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“…This means that it becomes convenient to use particles with the smallest possible size, The materials used as reinforcement, i.e., the long sisal fibers and the bentonite particles, were used without chemical, mechanical, or other surface treatments that would modify their interaction in the union or interface, with the polymer used as the matrix. Due to the hydrophilic nature of both vegetable fibers and clay and the hydrophobic nature of polyester, neither chemical nor diffusion bonds were established between them, with the union being purely mechanical [29]. Due to the above reasons, the transfer of the stresses assumed by the fibers is conditioned by their length/diameter ratio and length, making it necessary to point out that the one used is greater than the critical length of 50 mm.…”

Section: Scanning Electron Microscopy (Sem)mentioning

confidence: 99%

Influence of Bentonite Particles on the Mechanical Properties of Polyester–Sisal Fiber Composites

Valin Rivera,

Valenzuela Reyes,

Quinteros Wachtendorff

et al. 2023

Polymers

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As a part of the mission to create materials that are more environmentally friendly, we present the following proposal, in which a study of the mechanical properties of composite materials comprising a polyester resin with sisal fiber and bentonite particles was conducted. Sisal fiber was added to a matrix in percentages ranging from 5% to 45% in relation to the polyester resin weight, while bentonite remained fixed at 7% in relation to the polyester resin weight. The specimens were manufactured by compression molding. The mechanical properties were analyzed by tensile, bending, impact, stepped creep, and relaxation tests. In addition, energy-dispersive X-ray spectroscopy and scanning electron microscopy analyses were carried out to analyze the composition and heterogeneity of the structure of the composite material. The results obtained showed that 7% of bentonite added to the matrix affects the tensile strength. Flexural strength increased by up to 21% in the specimens with a 20% addition of sisal fiber, while the elastic modulus increased by up to 43% in the case of a 20% addition of sisal fiber. The viscoelastic behavior was improved, while the relaxation stress was affected.

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Tensile, Impact, and Thermal Properties of an Epoxynovolac Matrix Composites with Cuban Henequen Fibers

Cited by 10 publications

References 10 publications

Parameter Identification of Fractional Index Viscoelastic Model for Vegetable-Fiber Reinforced Composite

Parameter Identification of Fractional Index Viscoelastic Model for Vegetable-Fiber Reinforced Composite

Revolutionizing Sustainable Nonwoven Fabrics: The Potential Use of Agricultural Waste and Natural Fibres for Nonwoven Fabric

Influence of Bentonite Particles on the Mechanical Properties of Polyester–Sisal Fiber Composites

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