Volume 4, Issue 2, December 2020, Page: 15-24
Evaluation of Laminated Composites Reinforced by High-performance Kevlar Filaments with Variable SiO2: Mechanical, Morphological & Thermal Tests
Md. Sahab Uddin, Department of Applied Chemistry and Chemical Engineering, University of Dhaka, Dhaka, Bangladesh; Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh
Md. Shariful Islam, Department of Aeronautical Engineering, Military Institute of Science and Technology (MIST), Dhaka, Bangladesh
Farjana Showline Chaity, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh; Department of Microbiology, Noakhali Science and Technology University, Noakhali, Bangladesh
Md. Ali Akbar, Department of Applied Chemistry and Chemical Engineering, University of Dhaka, Dhaka, Bangladesh
Shahin Akand, Department of Applied Chemistry and Chemical Engineering, University of Dhaka, Dhaka, Bangladesh; Department of Chemistry, Gaibandha Mohilla College, Gaibandha, Bangladesh
M. A. Gafur, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh
A. M. Sarwaruddin Chowdhury, Department of Applied Chemistry and Chemical Engineering, University of Dhaka, Dhaka, Bangladesh
Received: Aug. 12, 2020;       Accepted: Aug. 24, 2020;       Published: Sep. 16, 2020
DOI: 10.11648/j.cm.20200402.11      View  67      Downloads  49
Abstract
In contemporary years, a necessity to produce satisfactory and progressive modules for engineering roles have been expanded rapidly. Laminated fiber-strengthened composite substances have well-made candidature for satisfying those factors with huge applications in nearly all regions of engineering and technology. Glass, Carbon, and aramid fibers are using extensively for the manufacturing of fiber-bolstered polymer composites. Kevlar is the highly accepted aramid fiber having an extended chain of strong, ring-like aromatic molecules. Superior temperature and shock-resistant aspects make kevlar the maximum promising antiballistic fabric with balance at elevated temperatures. It is extensively used for human body armor panels for light-weight army vehicles, bulletproof jackets, and fireproof bodysuits, and in aerospace industries, etc. In this work, we tested the tensile, flexural, and impacts strength of kevlar 49 (K-49) fiber-reinforced polymer complex. We additionally characterized its DTG/TG test, FTIR test, and SEM analysis for a definite and reliable notion of it. The composite samples used on this work had been organized with the aid of using hand lay-up procedure. All Mechanical characterizations had been carried out according to the necessities of ASTM standards. In this study, highest tensile strength and elastic modulus was observed for 5*% milled silica and lowest for composite with 0% silica. Composite C4 of 2% silica shows the maximum hardness in both Leeb rebound and Vickers micro hardness method (320.1HV, 447.8HRC). DTG curves of composites show that at 378.8°C, and 355.5°C the rate of degradation of the composite was 559 µg/min, and 58.5µg/min for composite C1, and C7 respectively. However, the findings were supported by FTIR and SEM images analysis.
Keywords
Kevlar, Laminated Composite, Tensile Strength, Flexural Strength, Water Absorption, Hardness, FTIR, SEM
To cite this article
Md. Sahab Uddin, Md. Shariful Islam, Farjana Showline Chaity, Md. Ali Akbar, Shahin Akand, M. A. Gafur, A. M. Sarwaruddin Chowdhury, Evaluation of Laminated Composites Reinforced by High-performance Kevlar Filaments with Variable SiO2: Mechanical, Morphological & Thermal Tests, Composite Materials. Vol. 4, No. 2, 2020, pp. 15-24. doi: 10.11648/j.cm.20200402.11
Copyright
Copyright © 2020 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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