STUDYING THE HARDNESS AND THERMAL CONDUCTIVITY OF HYBRID COMPOSITES USING NATURAL ADDITIVES WITH EPOXY

The goal of the present study is investigating effects of the natural additives from a vegetarian and animal source in a form (short fiber and particles) on hardness and thermal conductivity in composites materials. (jam Wood dust JWD, cow bones CB, date palm fiber DP, as well as sheep wool SW) have been chosen as natural additives with a variety of the reinforcements of weight fraction for epoxy matrix based that have been produced by hand lay-up approach. Thermal conductivity and hardness tests have been conducted based on the American society for the testing and materials (ASTM) for the characterization of hybrid composites it has been discovered that thermal conductivity and hardness may be decreased or increased according to the material additive type, its origin, and weight percentage utilized. %2.5 material (1) + %2.5 material (2), %2.5 material (1) + %5 material (2), %5 material (1) + %2.5 material (2).

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STUDYING THE MECHANICAL PROPERTIES OF HYBRID COMPOSITES USING NATURAL ADDITIVES WITH EPOXY

Journal of Engineering and Sustainable Development ◽

10.31272/jeasd.26.1.2 ◽

2022 ◽

Vol 26 (1) ◽

pp. 15-26

Author(s):

Hisham A. Chlob ◽

◽

Raad M. Fenjan ◽

Keyword(s):

Mechanical Characteristics ◽

Hybrid Composites ◽

Weight Ratio ◽

Wood Dust ◽

Short Fibers ◽

Fundamental Goal ◽

American Society ◽

Flexural Tests ◽

Natural Additives

The fundamental goal of the present study is to study the effects of the natural additives with vegetable and animal sources in form (i.e. the short fibers and particle) on mechanical characteristics epoxy. (The wood dust WD, cow bones CB, date palm fiber DP, and sheep wool SW) have been chosen as natural additives with a variety of the weight ratio reinforcements for epoxy matrix, which is based upon the hybrid composites that have been produced by hand lay-up approach. Tensile, compression and flexural tests have been performed based on the American society for the testing and materials (ASTM) for the characterization of hybrid composites it has been discovered that mechanical characteristics may be increased or decreased according to the material additive type, its origins, and the utilized percentage of weight.

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Influence of filler hybridization on thermomechanical properties of hemp/silver epoxy composite

Polymers and Polymer Composites ◽

10.1177/0967391120978112 ◽

2020 ◽

pp. 096739112097811

Author(s):

Munjula Siva Kumar ◽

Santosh Kumar ◽

Krushna Gouda ◽

Sumit Bhowmik

Keyword(s):

Thermal Conductivity ◽

Silver Nanoparticles ◽

Epoxy Polymer ◽

Hybrid Composites ◽

Conductive Filler ◽

Weight Fraction ◽

Mechanical Analysis ◽

Thermomechanical Properties ◽

Material Behavior ◽

Good Crystallinity

The polymer composite material’s thermomechanical properties with fiber as reinforcement material have been widely studied in the last few decades. However, these fiber-based polymer composites exhibit problems such as fiber orientation, delamination, fiber defect along the length and bonding are the matter of serious concern in order to improve the thermomechanical properties and obtain isotropic material behavior. In the present investigation filler-based composite material is developed using natural hemp and high thermal conductive silver nanoparticles (SNP) and combination of dual fillers in neat epoxy polymer to investigate the synergetic influence. Among various organic natural fillers hemp filler depicts good crystallinity characteristics, so selected as a biocompatible filler along with SNP conductive filler. For enhancing their thermal conductivity and mechanical properties, hybridization of hemp filler along with silver nanoparticles are conducted. The composites samples are prepared with three different combinations such as sole SNP, sole hemp and hybrid (SNP and hemp) are prepared to understand their solo and hybrid combination. From results it is examined that, chemical treated hemp filler has to maximized its relative properties and showed, 40% weight % of silver nanoparticles composites have highest thermal conductivity 1.00 W/mK followed with hemp filler 0.55 W/mK and hybrid 0.76 W/mK composites at 7.5% of weight fraction and 47.5% of weight fraction respectively. The highest tensile strength is obtained for SNP composite 32.03 MPa and highest young’s modulus is obtained for hybrid composites. Dynamic mechanical analysis is conducted to find their respective storage modulus and glass transition temperature and that, the recorded maximum for SNP composites with 3.23 GPa and 90°C respectively. Scanning electron microscopy examinations clearly illustrated that formation of thermal conductivity chain is significant with nano and micro fillers incorporation.

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Effects of Addition of Prosopis Juliflora Fiber on the Physical and Mechanical Properties of Wood Dust and Coir Pith Particle Reinforced Phenol Formaldehyde Hybrid Composite

JOURNAL OF ADVANCES IN CHEMISTRY ◽

10.24297/jac.v13i10.5720 ◽

2017 ◽

Vol 13 (10) ◽

pp. 6558-6562

Author(s):

A. Athijayamani ◽

A.Sujin Jose ◽

K. Ramanathan ◽

S. Sidhardhan

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Flexural Strength ◽

Hybrid Composites ◽

Phenol Formaldehyde ◽

Physical And Mechanical Properties ◽

Prosopis Juliflora ◽

Wood Dust ◽

Weight Percentage ◽

Coir Pith

In this study, Wood Dust (WD)/Phenol Formaldehyde (PF) and Coir Pith (CP)/PF composites were hybridized with the Prosopis Juliflora Fiber (PJF) to obtain the hybrid composites. Composites were prepared by hand moulding technique. The weight percentage of particles and fibers are fixed in the ratio of 1:1. Mechanical properties such as tensile, flexural and impact strengths were evaluated as a function of the particle and fiber loadings. The results show that the properties of both the WD and CP composites obviously improved by the addition of the PJF. The improvement in WD/PF composites was obviously higher than the CP/PF composites for all loadings. The WD/PJF/PF hybrid composites exhibited better tensile (strength of 48.9 MPA and modulus of 1262.1 MPa, respectively), flexural (strength of 55.4 MPa and modulus of 1344.3 MPa, respectively), and impact properties (1.32 KJ/m2).Â

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An adaptation of the Lewis-Nielsen equations for the thermal conductivity of short fiber reinforced hybrid composites

Materials Today Communications ◽

10.1016/j.mtcomm.2019.100632 ◽

2019 ◽

Vol 21 ◽

pp. 100632

Author(s):

Nicholas C. Ecke ◽

Johannes Höller ◽

Jan Niedermeyer ◽

Peter Klein ◽

Alois K. Schlarb

Keyword(s):

Thermal Conductivity ◽

Hybrid Composites ◽

Short Fiber ◽

Fiber Reinforced

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Fracture Toughness and Hardness studying for Polymer-Ceramic Composite

Baghdad Science Journal ◽

10.21123/bsj.11.2.547-553 ◽

2014 ◽

Vol 11 (2) ◽

pp. 547-553

Author(s):

Baghdad Science Journal

Keyword(s):

Mechanical Properties ◽

Fracture Toughness ◽

Particulate Composite ◽

Weight Fraction ◽

Optical Microscope ◽

Preparation Methods ◽

Weight Percentage ◽

Hardness Tests ◽

Heat Treated ◽

Matrix Hardness

A particulate composite material was prepared by adding the Titanium dioxide (TiO2) with a particle size of (75-150) µm to Epoxy resin at weight percentage of (10%,20%,30%,40%,50%).The following some mechanical properties were studied,fracture toughness, hardness.casting preparation methods were used in this study includes preparing plate of matrix and composites. specimens were prepared according to ASTM for the Mechanical properties tests. After that Another samples were heat treated for three and six hour at 65C?. Fracture toughness (Kic) represent for stress intensity factor results were showed that the curve of three hours aging increases in fracture toughness (Kic) for composites but for six hours aging increases fracture toughness (Kic) for polymer matrix. Hardness tests was showed that hardness results increased with the increase in weight fraction while a samples that not treated thermally have higher hardness than the samples for treated thermally. Finally, fracture surfaces were showed morphology failure surfaces by using an optical Microscope.

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Investigation of Flexural Properties and Thermal Conductivity for Wood Dust Filled Epoxy.

Journal of Al-Nahrain University-Science ◽

10.22401/jnus.16.3.14 ◽

2013 ◽

Vol 16 (3) ◽

pp. 104-109 ◽

Cited By ~ 1

Author(s):

Ban M. Al-Shabander ◽

Keyword(s):

Thermal Conductivity ◽

Wood Dust ◽

Flexural Properties

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Estimation of thermal conductivity of short fiber composites

Materials Today Proceedings ◽

10.1016/j.matpr.2020.12.972 ◽

2021 ◽

Author(s):

Avinash Patil ◽

Shaik ShashaVali

Keyword(s):

Thermal Conductivity ◽

Fiber Composites ◽

Short Fiber

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The rheological behaviour and thermal ageing characteristics of PP/MWCNT/glass fibre multiscale composites

Polymers and Polymer Composites ◽

10.1177/0967391121992909 ◽

2021 ◽

pp. 096739112199290

Author(s):

N Rasana ◽

K Jayanarayanan ◽

Krishna Prasad Rajan ◽

Aravinthan Gopanna

Keyword(s):

Hybrid Composites ◽

Rheological Behaviour ◽

Strain Energy Release ◽

Critical Stress Intensity Factor ◽

Thermal Ageing ◽

Multiwalled Carbon ◽

Weight Percentage ◽

Fixed Weight ◽

Multiscale Composite ◽

The Matrix

Multiscale hybrid composites were prepared using varying weight percentages (0 to 5) of multiwalled carbon nanotubes (MWCNTs) as nanofiller and a fixed weight percentage (20) of short glass fibres as micro filler (in polypropylene (PP) matrix. The shear and extensional viscosity of the composites was measured using a capillary rheometer. It was observed that even at higher shear rates the synergism of micro and nanofillers in the matrix significantly enhanced the melt viscosity. The complex nanotube network entanglement with micro fillers and PP chains imparted restrictions to the polymer chain movements. The prepared samples were subjected to thermal ageing at 100°C for 4 days in hot air oven. After ageing, multiscale composite with 3 wt% MWCNTs exhibited 28.57% enhancement in strain at break, whereas the tensile strength and modulus reduced by 6.8% and 8% respectively. The fracture toughness properties like strain energy release rate and critical stress intensity factor were not affected for multiscale composite at the optimum content of 3 wt% MWCNT, even after thermal ageing.

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