Influence of filler content and surface modification on physical and mechanical properties of epoxy/walnut shell particulate composites

Shejkar, Satish Kumar; Agrawal, Basant; Agrawal, Alok; Gupta, Gaurav; Pati, Pravat Ranjan

doi:10.1080/01694243.2022.2066915

Cited by 17 publications

(6 citation statements)

References 31 publications

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“…[ 44 ] ASTM D 570 standard is implemented to determine the percentage of water uptake over a given period. [ 45 ] The tensile tests are performed following ASTM D638, the compressive test is performed following ASTM D695 and flexural tests are performed following ASTM D2344‐84 standard with the help of a Universal testing machine. The hardness is measured by following the ASTM D‐2240 standard and the device used for measuring it is PosiTector SHD Shore hardness Durometer.…”

Section: Methodsmentioning

confidence: 99%

Fabrication and characterization of hexagonal boron nitride/polyester composites to study the effect of filler loading and surface modification for microelectronic applications

Kushwaha

Patel

Khan³

et al. 2023

Polymer Composites

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This work investigates a composite prepared with polyester and hexagonal boron nitride (hBN) in terms of the properties required in the material for microelectronics applications. The influence of filler loading and the surface treatment of hBN with a silane coupling agent (γ‐aminopropyl triethoxy silane) is studied. It has been observed that the silane‐modified hBN improves the compatibility and adhesion with the matrix as verified by SEM images. The experimental investigation reveals that the addition of hBN in polyester unwillingly rises the density, voids content, and water absorption rate. Though, the increment is limited with surface‐modified hBN. The material's mechanical properties improve with filler loading over a particular range of filler loading. The material's thermal conductivity and glass transition temperature increase with hBN content, whereas the coefficient of thermal expansion reduces. Polyester when filled with 40 wt% of the silane‐hBN, the thermal conductivity improves around six times that of unfilled polyester. The dielectric properties are marginally augmented with filler loading whereas, the increase in frequency results in the reduction of dielectric properties. It can be observed from the overall experimental analysis that the developed material can be used in different microelectronic applications. Highlights A new class of composite is developed with polyester and raw/modified hBN. Composite with modified hBN shows improved physical/mechanical properties. Thermal properties of polyester improved appreciably with treated hBN. The dielectric properties of composites remain well within the range. The fabricated composites are recommended for microelectronics applications.

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Section: Methodsmentioning

confidence: 99%

Fabrication and characterization of hexagonal boron nitride/polyester composites to study the effect of filler loading and surface modification for microelectronic applications

Kushwaha

Patel

Khan³

et al. 2023

Polymer Composites

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“…The voids in the composites are assessed with the help of percentage differences in the value of measured and theoretical density. 25 ASTM D 570 standard is used to evaluate the percentage of water absorption over a given period. 26 The tensile tests, compressive test and flexural test are performed following ASTM D638, ASTM D695 and ASTM D2344-84 standards respectively.…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Sliding wear behaviour of micro-sized Kota stone dust reinforced epoxy composites using Taguchi method and Grey Wolf optimisation algorithm

Gupta,

Rajput,

Ayachit

et al. 2024

Proceedings of the Institution of Mechanical Engineers, Part C:

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Kota stone dust (KSD) is an unwanted material engendered throughout the process of manufacturing Kota stone. The present work comprises the appropriate consumption of KSD for evolving a composite system with epoxy as the base matrix material. The samples are developed by the hand lay-up technique. The micrographs clearly show that KSD is uniformly distributed within the epoxy matrix and establishes good adhesion with it. With the inclusion of filler, density unwillingly increases by 21.86%, but voids generated are limited to only 4.98% for a maximum filler content of 40 wt. %. A very low water absorption rate of 0.81% for maximum filler loading is observed. The compressive strength and micro-hardness increased by 31.8% and 26.25% respectively. Tensile strength, as well as flexural strength, improves for low filler loading of 20 wt. % and decreases thereafter. The sliding wear tests of the fabricated composites are studied in this research employing fairly advanced nature-inspired Grey wolf optimisation (GWO). The wear tests are based on a real-world issue that is framed in Taguchi L25 OA. A simple linear regression equation demonstrates adequate agreement between predicted and experimental values. The inclusion of KSD decreases the wear rate. Further, it is found that the KSD loading is the utmost significant factor, whereas normal load is the least significant factor that administrates the sliding wear rate of the composite system. Using the grey wolf optimiser, the optimal settings are 2500 m sliding distance, 40 wt.% KSD content, 52 cm/s sliding velocity, and 10 N normal load. The validation test results suggest that GWO is superior to the classical Taguchi approach. The wear loss mechanism is examined under the scanning electron microscope.

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“…They concluded that the key to creating effective polymer composites is choosing the right polymer matrix, hardener, reinforcement, filler synthesis and dispersion, as well as the fabrication procedures. Shejkar et al 14 studied the Influence of walnut shell content and surface modification on mechanical and physical properties of epoxy‐based composites. They found that the mechanical properties like tensile, compressive, and flexural strengths of the composites increase as a linear function of filler content.…”

Section: Introductionmentioning

confidence: 99%

Sliding wear characterization of epoxy composites filled with wood apple dust using Taguchi analysis and finite element method

Purohit,

Pradhan,

Gupta

et al. 2023

Vinyl Additive Technology

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In this research, a new class of composite made up of wood apple dust (WAD) and epoxy is developed using the hand lay‐up process. The impact of WAD filler on the physical and wear characteristics of epoxy‐based composites are examined. The composite samples are prepared by varying the weight content of WAD (0, 3, 6, 9, and 12 wt%). The composites are subjected to dry sliding wear testing in accordance with the L25 Taguchi design to calculate the specific wear rate (SWR). An optimum parametric combination of control factors is established for the composites to have the least amount of wear loss. The SWR of WAD/epoxy composites is also predicted using commercial finite element method (FEM) software ANSYS 2019 R2. The experimental findings are compared with the predicted wear rates of the composites. The results revealed that addition of WAD powder improved the wear resistance of the composites. A remarkable increase in tensile, compressive and flexural strength values of 34.79%, 10.12%, and 22.66% respectively, is observed. Neat polymer has tensile, compressive and flexural strengths of 48, 82, and 22.5 MPa respectively, and the values increased to 64.7, 90.3, and 27.6 MPa with addition of 12 wt% WAD. It is further observed that out of the four control factors the most influencing control factor affecting the wear rate of the composites in decreasing order are WAD content, sliding velocity, sliding distance, and normal load.Highlights In this study a natural fiber‐based waste, wood apple dust (WAD) is successfully used as a potential filler material in epoxy matrix. Physical and mechanical properties of the epoxy‐WAD composites are analyzed. Effects of filler contents on the wear behavior are studied using design of experiment. The wear rate of WAD/epoxy composites is predicted using finite element method.

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Influence of filler content and surface modification on physical and mechanical properties of epoxy/walnut shell particulate composites

Cited by 17 publications

References 31 publications

Fabrication and characterization of hexagonal boron nitride/polyester composites to study the effect of filler loading and surface modification for microelectronic applications

Fabrication and characterization of hexagonal boron nitride/polyester composites to study the effect of filler loading and surface modification for microelectronic applications

Sliding wear behaviour of micro-sized Kota stone dust reinforced epoxy composites using Taguchi method and Grey Wolf optimisation algorithm

Sliding wear characterization of epoxy composites filled with wood apple dust using Taguchi analysis and finite element method

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