An investigation on mechanical properties in randomly oriented short natural fiber reinforced composites

Patel, Nirali; Jain, Piyush

doi:10.1016/j.matpr.2020.05.452

Cited by 15 publications

(11 citation statements)

References 12 publications

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“…The composites’ tensile modulus and tensile strength are primarily determined by filler amount and size, filler properties, matrix interfacial bonding, void formation, moisture absorption by filler, and other factors, according to Arjmandi et al (2015) [ 12 ]. According to Patel and Jain (2020), the decrease in tensile strength is because of the weak stress transfer between the filler material and matrix resin [ 13 ]. The majority of the previous authors looked at the influence of physical and chemical treatment, which is among the most well-known surface-modification approaches that help to promote matrix and fibre adhesion.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Filler Loading and Alkaline Treatment on the Mechanical Properties of Palm Kernel Cake Filler Reinforced Epoxy Composites

et al. 2022

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The manufacturing of materials, in conjunction with green technology, emphasises the need to employ renewable resources to ensure long-term sustainability. Re-exploring renewable elements that can be employed as reinforcing materials in polymer composites has been a major endeavour. The research goal is to determine how well palm kernel cake filler (PKCF) performs in reinforced epoxy composites. In this study, PKCF with 100 mesh was mixed with epoxy resin (ER) in various ratios ranging from 10% to 40% by weight. Hand lay-up with an open mould is proposed as a method for fabricating the specimen test. Surface modification of PKCF with varying concentrations of NaOH (5 wt.% and 10 wt.%) will be contrasted with the untreated samples. Using Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC), the effect of alkaline treatment will be examined. The tensile and maximum flexural strength of the untreated PKCF/ER composite were determined in this work, with a 30 wt.% of PKCF having the highest tensile strength of 31.20 MPa and the highest flexural strength of 39.70 MPa. The tensile and flexural strength were reduced to 22.90 MPa and 30.50 MPa, respectively, when the filler loading was raised to 40 wt.%. A 5 wt.% alkali treatment for 1 h improved the composites’ mechanical characteristics. Lastly, an alkali treatment can aid in the resolution of the problem of inadequate matrix and filler interaction. Alkaline treatment is a popular and effective method for reducing the hydroxyl group in fillers and, thus, improving interfacial bonding. Overall, palm kernel cake is a promising material used as a filler in polymer composites.

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Section: Introductionmentioning

confidence: 99%

The Influence of Filler Loading and Alkaline Treatment on the Mechanical Properties of Palm Kernel Cake Filler Reinforced Epoxy Composites

et al. 2022

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“…Isto se deve pela fibra de curauá apresentar menor densidade (1,2 g/cm³) quando comparada a matriz cimentícia, Ferreira et al [28] utilizou matriz cimentícia com densidade de 2,16 g/cm³. Dessa forma, quanto maior a quantidade de incorporação de fibras, menor a densidade do material, como esperado e já confirmado por outros autores como Colorado e Zapata [29] e Patel e Jain [30]. 4 Porosidade aparente 5 Tensão de primeira fissura * Valores seguidos pela mesma letra dentro da mesma coluna, para a mesma idade, não se diferenciam estatisticamente, a 5% de probabilidade, pelo teste de Tukey.…”

Section: Resultsunclassified

Propriedades físicas e mecânicas de compósitos de cimento reforçados com fibra de curauá (Ananas erectifolius)

Weber

Matoski

Cechin

et al. 2022

ECUM

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O objetivo deste estudo é a caracterização de compósitos cimentícios com reforço de fibras longas de curauá. Estes compósitos são constituídos de matriz cimentícia composta por cimento CP V-ARI, areia, água e superplastificante. A substituição de materiais como o cimento por reforços de materiais naturais como a fibra de curauá se tornam objetos de pesquisa por reduzirem o custo, serem biodegradáveis, gerarem baixa energia em sua produção e possuírem propriedades como baixa densidade e capacidade de isolamento térmico e acústico. Para a produção dos compósitos laminados, foi determinada a influência da fração volumétrica de fibras no compósito em teores de adição de 0%, 5%, 10%, 15% e 20%. Como metodologia moldou-se o compósito em cinco camadas, intercalando três camadas de matriz cimentícia e duas camadas de reforço de fibra de curauá. Os ensaios avaliaram o comportamento físico e mecânico dos compósitos em diferentes dias (7, 28 e 90 dias). Observou-se que o teor de fibra de curauá de 10%, com essa metodologia, apresentou resultados compatíveis à referência com relação à resistência à flexão aos 90 dias, sendo indicado dessa forma a cura dos painéis por 90 dias para aplicação. E a redução na massa específica dos painéis foi possível, de forma significativa, com as adições acima de 10% de fibra de curauá.

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“…The composites containing short fibers as reinforcement are called short-fiber composites. They are also called discontinuous-fiber reinforced composites [13]. A short fiber composite with randomly oriented fibers in a polymer matrix makes the overall composite behave as isotropic [14].…”

Section: Introductionmentioning

confidence: 99%

Analytical and Finite Element Characterisation of a Randomly Reinforced Recyclable Composite for Construction Products

Helaili

Zaouali²,

Chafra

2022

Preprint

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In general, the use of fibers requires sorting and, in some cases, chemical treatments, which increases the manufacturing cost and environmental impact. The use of short, unorganized fibers, i.e., randomly distributed, is a solution to this problem. However, to use randomly distributed short natural fibers, the mechanical properties of the randomly reinforced composite must be estimated. This paper developed two analytical models and one finite element model to characterize composites reinforced with short fibers. Calcium Carbonate precipitates CCP/PVC PolyVinyl Chloride composites are studied as an application in the construction industry. The CCP improves recyclability and reduces petrochemical and energy usage during the manufacturing process, minimizing the carbon footprint. The Mori-Tanaka model, the Halpin-Tsai model, and a finite element method model were used to investigate distribution effects on the mechanical properties of the composite. The first is the effect of fiber volume fraction on the elastic mechanical properties of the composite. All three models show an increase in elastic modulus with the growth of fiber content in the composite. The second is the effect of fiber orientation for a given volume fraction. The results show a maximum variation of 15.56% on the elastic properties by varying the fiber orientation compared to an equally distributed composite. This result means that the random distribution of the fibers does not significantly influence the mechanical properties. The third effect is the fiber length effect. For different concentrations, the fiber length varies the stiffness by about 6.64%. This variation of the stiffness is observed up to the ratio of fiber length/diameter equal to 100; after that, the increase is insignificant.

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An investigation on mechanical properties in randomly oriented short natural fiber reinforced composites

Cited by 15 publications

References 12 publications

The Influence of Filler Loading and Alkaline Treatment on the Mechanical Properties of Palm Kernel Cake Filler Reinforced Epoxy Composites

The Influence of Filler Loading and Alkaline Treatment on the Mechanical Properties of Palm Kernel Cake Filler Reinforced Epoxy Composites

Propriedades físicas e mecânicas de compósitos de cimento reforçados com fibra de curauá (Ananas erectifolius)

Analytical and Finite Element Characterisation of a Randomly Reinforced Recyclable Composite for Construction Products

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