Effect of Variation in Frequencies on Dynamic Mechanical Properties of Jute  Fibre Reinforced  Epoxy Composite s

Gupta, Manju Lata

doi:10.26872/jmes.2018.9.1.12

Cited by 19 publications

(22 citation statements)

References 19 publications

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“…Lignified parts of agricultural wastes in the form of various types of shells such as groundnut shell powder (GSP) and husks have been valuable products in composite production processes due to their high scarce interest in other industrial sectors. Several natural fibres have been investigated in this regard including but not limited to banana fibre (Naidu et al, 2013), rice husk (Tong al., 2014), pineapple peel (Danladi and Shui'ab, 2014), bagasse (Naguib et al, powder (Majid et al, 2016) and jute (Gupta, 2018). http://dx.doi.org/10.4314/bajopas.v11i1.23S being widely used in the preparation of polymer ., 2017).…”

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confidence: 99%

Effect of groundnut shell powder on the viscoelastic properties of recycled high density polyethylene composites

Jacob¹,

Mamza²,

Ahmed³

et al. 2019

Bayero J. Pure App. Sci.

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INTRODUCTIONPolyethylene (PE) is one of the most widely used thermoplastic in the world because of its good properties such as toughness, near moisture absorption, excellent chemical inertness, low coefficient of friction and ease of processing (Khanam and Al Maadeed, 2015).The precise degree of crystallinity density are dependent on the molecular weight of PE (Usman et al., 2016). Generally, the most used PE grades are low density polyethylene (LDPE), medium density polyethylene (MDPE) and high density polyethylene (HDPE). HDPE in particular exhib performances such as chemical stability barrier, mechanical strength, and dielectric properties (Musa et al., 2017), and is the third most frequently used plastic in the world (Kumar et al., 2011). These properties makes HDPE a versatile material in agriculture, automotive, machine packaging and daily sundries (Dusunceli and Colak, 2008) manufacture of many other products such as milk jugs, detergent bottles, margarine tubs, garbage containers (Klyosov, 2007); water pipes (Vasile and Pascu, 2005) and bottle caps resulting in a large volume of wastes. Above all, HDPE has a strong plasticity and deformability (Pawlak and Galesky, 2005), ABSTRACT In the quest to clean up the environment and produce economically viable materials from plastic wastes and readily available natural fibres, groundnut shell powder reinforced recycled high density polyethylene composite was prepared via two roll melt mixin compression moulding technique. The dynamic mechanical properties of the composites such as storage modulus (E'), loss modulus (E''), and damping parameter (Tan investigated using 242E dynamic mechanical analyzer in a temperature range from 3 100 0 C at a frequency of 1 Hz. It was found that the storage modulus of all the composites decrease with increase in temperature with composite containing 25%wt fibre having maximum E' value of 1158.47MPa compared to 1033.58MPa of the unreinforced recycled high density polyethylene. These results indicated that the thermal stability and load bearing capacity of the recycled high density polyethylene have been improved with the incorporation of groundnut shell powder. Scanning Electron micrographs showed better interfacial adhesion between treated groundnut shell powder in the polymer matrix; this explained the observed improvement in the viscoelastic properties of the composites.

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confidence: 99%

Effect of groundnut shell powder on the viscoelastic properties of recycled high density polyethylene composites

Jacob¹,

Mamza²,

Ahmed³

et al. 2019

Bayero J. Pure App. Sci.

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“…It is obvious that 30wt% and 40wt% SCBP/Epoxy composites are the stiffest composite materials because of their higher values of storage modulus of 950MPa and 997MPa in the glassy region when compared to other composites. This occurs as a consequence of the strong interfacial adhesion, which indicates superior dynamic mechanical properties for this composite in comparison [17]. The decrease in the storage modulus for 20wt%, 10wt%, and 50wt%SCBP/Epoxy composites may be attributed to the low stiffness which tends to reduce the viscoelasticity of the epoxy matrix [18].…”

Section: Storage Modulusmentioning

confidence: 98%

Effect of Visco-Elastic Parameters and Activation Energy of Epoxy Resin Matrix Reinforced with Sugarcane Bagasse Powder (SCBP) Using Dynamic Mechanical Analyzer (DMA)

Abdullahi¹

2018

AJPST

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A sugar cane bagasse powder (SCBP) reinforced epoxy resin composite was developed at low cost using the hand lay-up method. The viscoelastic parameters and activation energies of the composites were evaluated using dynamic mechanical analyzer (DMA) in a temperature range from 30°C to 120°C at 10Hz oscillating frequency. It was observed that 30wt% and 40wt% SCBP/Epoxy composites are the stiffest composite materials because of their higher values of storage modulus of 950MPa and 997MPa in comparison to about 800MPa of the neat epoxy matrix. Our findings also revealed that loss modulus decreases with increase in temperature and incorporation of SCPB fiber content caused broadening of the curves which depicts an increase in thermal stability of composite materials in comparison with neat epoxy matrix. There was a gradual decrease in damping coefficients as the SCBP content increases which could be attributed to the reinforcing effect of the fiber. The decrease in activation energies of 293.013, 286.836 and 201.103KJ/mol for 20wt%, 40wt%, and 50wt%SCBP/Epoxy resin composites proved that the activation energy values are in agreement with the storage modulus which suggests an improved stiffness of the composites.

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“…The Loss modulus of a composite is the maximum energy released by composite materials during deformation. It presents the viscous response of the materials which depends on the motion of polymeric molecules in the composites [22]. The variation in loss modulus as a function of weight percent of reinforcement, temperature and frequency for the studied composites can be seen in Figures 7, 8, 8, 10 and 11.…”

Section: Loss Modulusmentioning

confidence: 99%

“…The results show that as the weight percent of CHA increases in the composite, the values of storage modulus also begin to increase. The E' of the polymer has been reported to increase in the elastomeric region due to strong reinforcement/matrix interface and addition of reinforcing materials that impart higher stiffness [21]; this was the result that was obtained when CHA, being a high stiffness material, was added to the polyester matrix: E' increased as the percentage reinforcement of CHA increased to a maximum value at 20 wt% CHA; while the increase in weight percent of a high-stiffness material can help to increase the E', when the weight percent is so high that there is poor reinforcement/matrix interface or there is a presence of void in the composite, the reinforcing effect of the material will not be maximized [22]. The decrease in E' values at 15 wt% CHA and 25 wt% CHA can be attributed to void formation and agglomeration resulting in weak reinforcement/matrix interface.…”

Section: Storage Modulusmentioning

confidence: 99%

Evaluation of physical and dynamic mechanical properties of coconut husk ash (CHA) reinforced polyester composites

Ipilakyaa

2021

Journal of Mechanical and Energy Engineering

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The evaluation of physical and dynamic mechanical analysis (DMA) properties was carried out using developed CHA Reinforced Polymer Composite. Sieve analysis of pretreated CHA was done to obtain 75 µm, 150 µm and 300 µm particles sizes. These particles were used at varying compositions of 5%, 10%, 15%, 20% and 25% as reinforcements for polyester composites. The catalyst and accelerator used were Methyl Ethyl Ketone Peroxide and Cobalt Naphthenate respectively. The densities of the evaluated composites made with 150 μm particles were found to be less dense with values ranging from 0.9792 g/cm3 to 1.2561 g/cm3 than those made with 75μm and 300μm. The results also show that the percentage water absorbed by samples increased, ranging from 0 to over 2000 E’/MPa for all percentage reinforcements of CHA, with an increase in the duration of immersion of the samples in distilled water. However, 25% reinforcement had better results for all particle sizes. There were obvious variations of storage modulus, loss modulus and mechanical loss factor with percentage weight of reinforcement, temperature and frequency. The composite with 15 % reinforcement displayed better results and can be used as a material for interior components in aerospace and automobile industries.

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Effect of Variation in Frequencies on Dynamic Mechanical Properties of Jute Fibre Reinforced Epoxy Composite s

Cited by 19 publications

References 19 publications

Effect of groundnut shell powder on the viscoelastic properties of recycled high density polyethylene composites

Effect of groundnut shell powder on the viscoelastic properties of recycled high density polyethylene composites

Effect of Visco-Elastic Parameters and Activation Energy of Epoxy Resin Matrix Reinforced with Sugarcane Bagasse Powder (SCBP) Using Dynamic Mechanical Analyzer (DMA)

Evaluation of physical and dynamic mechanical properties of coconut husk ash (CHA) reinforced polyester composites

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