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Journal ArticleDOI

Mechanical, DMA and Sound Acoustic behaviour of Flax woven fabric reinforced Epoxy composites

01 Aug 2020-Vol. 7, Iss: 8, pp 085302
About: The article was published on 2020-08-01 and is currently open access. It has received 22 citations till now. The article focuses on the topics: Woven fabric & Epoxy.
Citations
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Journal ArticleDOI
29 Sep 2021-Polymers
TL;DR: In this article, the authors investigated the mechanical, thermal, and chemical properties of basalt/woven glass fiber reinforced polymer (BGRP) hybrid polyester composites.
Abstract: This study investigates the mechanical, thermal, and chemical properties of basalt/woven glass fiber reinforced polymer (BGRP) hybrid polyester composites. The Fourier transform infrared spectroscopy (FTIR) was used to explore the chemical aspect, whereas the dynamic mechanical analysis (DMA) and thermomechanical analysis (TMA) were performed to determine the mechanical and thermal properties. The dynamic mechanical properties were evaluated in terms of the storage modulus, loss modulus, and damping factor. The FTIR results showed that incorporating single and hybrid fibers in the matrix did not change the chemical properties. The DMA findings revealed that the B7.5/G22.5 composite with 7.5 wt% of basalt fiber (B) and 22.5 wt% of glass fiber (G) exhibited the highest elastic and viscous properties, as it exhibited the higher storage modulus (8.04 × 109 MPa) and loss modulus (1.32 × 109 MPa) compared to the other samples. All the reinforced composites had better damping behavior than the neat matrix, but no further enhancement was obtained upon hybridization. The analysis also revealed that the B22.5/G7.5 composite with 22.5 wt% of basalt fiber and 7.5 wt% of glass fiber had the highest Tg at 70.80 °C, and increased by 15 °C compared to the neat matrix. TMA data suggested that the reinforced composites had relatively low dimensional stabilities than the neat matrix, particularly between 50 to 80 °C. Overall, the hybridization of basalt and glass fibers in unsaturated polyester formed composites with higher mechanical and thermal properties than single reinforced composites.

20 citations

Journal ArticleDOI
TL;DR: In this paper, the effects of graphene nano-platelets (GnPs) on polyvinyl chloride (PVC) were discussed through studying some important optical parameters besides the thermal properties.
Abstract: Nanocomposites of graphene nano-platelets (GnPs) with different ratios were embedded in polyvinyl chloride (PVC) by a simple casting technique. DSC and TGA analysis proved that PVC/GnPs (0.5 wt% of GnPs) showed the highest thermal stability. The effects of Gnps on PVC were discussed through studying some important optical parameters besides the thermal properties. Increasing GnPs content increased the thermal stability of the nanocomposites as the residue increased from 1.9% for PVC to 9.3% upon addition of 0.5 wt% of GnPs. The penetration depth (δ), the steepness parameter (S) and the group velocity dispersion (GVD) decreased as the content of GnPs increased. Solar skin protection factor (SSPF) of PVC/GnPs (2.5 wt% of GnPs) nanocomposite improved to be 95% compared with 26% for pure PVC. The optical oscillator strengths (f) increased from 7.97 (eV)2 for PVC to 90.8 (eV)2 for PVC/GnPs (2.5 wt%). The dispersion energy Ed, the single oscillator energy Eo, the static refractive index (no), the oscillator length strength (So), the average interband oscillator wavelength (λo) were GnPs content dependent. The enhancement in the optical (σoptical) conductivity, by increasing the content of GnPs is due to increasing the absorbance of the nanocomposite films. DMA results showed that the storage modulus was increased by 21% upon addition of 0.25 wt% of GnPs while decreased by ~ 31% upon increasing GnPs ratio up to 2.5 wt%.

20 citations

Journal ArticleDOI
TL;DR: In this paper , the authors provide an overview of the bast fibers and their composites, properties enhancement techniques, overall mechanical behaviours and thermal stability with suitable applications for aeronautical, automobile, construction, chemical, and biomedical applications.
Abstract: Composite materials are revolutionizing to realize the demanding needs of aeronautical, automobile, construction, chemical, and biomedical applications. The natural fiber composite is chosen as one of the best choices among composites due to its sustainable goods like eco-friendly nature, better properties and Greenhouse gas (GHG) balance. Furthermore, the bast fiber composites are identified as promising industrial composites based on the availability, strength-to-weight ratio, manufacturing ease, and economics for commercialization. However, product quality and production volume significantly influence commercial adoption of the bast fiber composites. Especially the product quality primarily suffers due to climatic conditions, damage while harvesting, extraction method, retting issues, and extraction location. Consequently, this review aims to provide an overview of the bast fibers & their composites, properties enhancement techniques, overall mechanical behaviours and thermal stability with suitable applications.

11 citations

Journal ArticleDOI
TL;DR: Flax is a natural fiber that possesses excellent specific properties, low density, safe to handle, eco-friendly, and easily available as mentioned in this paper, which make it exceedingly popular and a potential candidate to...
Abstract: Flax is a natural fiber that possesses excellent specific properties, low density, safe to handle, eco-friendly, and easily available. These make it exceedingly popular and a potential candidate to...

8 citations

Journal ArticleDOI
TL;DR: Flax is the strongest natural fiber used as reinforcement for polymer-based composites due to its ecological properties, low specific gravity, renewability, biodegradability, recyclability besides....
Abstract: Flax is the strongest natural fiber used as reinforcement for polymer-based composites due to its ecological properties, low specific gravity, renewability, biodegradability, recyclability besides ...

7 citations

References
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Journal ArticleDOI
TL;DR: A review of the literature on the various aspects of cellulosic fibres and biocomposites can be found in this paper, where the pros and cons of using these fibres are enumerated in this review.

1,908 citations

Journal ArticleDOI
TL;DR: The prime aim of this review article is to demonstrate the recent development and emerging applications of natural cellulose fibers and their polymer materials.

775 citations

Journal ArticleDOI
01 Nov 1996-Polymer
TL;DR: The effect of chemical treatment on the tensile properties of sisal fiber-reinforced LDPE composites was investigated in this article, where various chemical treatments were carried out to improve the bonding at the fibre polymer interface.

666 citations

Journal ArticleDOI
TL;DR: In this article, the tensile properties of hybrid composites were found to increase substantially with increasing jute fibres loading as compared to oil palm-epoxy composite, and the overall use of hybrid system was found to be effective in increasing tensile and dynamic mechanical properties of the oil palm/polyurethane composite probably due to the enhanced fibre/matrix interface bonding.
Abstract: Hybrid composites prepared by hand lay-up technique by reinforcing jute and oil palm fibres with epoxy matrix. The tensile properties of hybrid composites were found to increase substantially with increasing jute fibres loading as compared to oil palm–epoxy composite. The nature of fibre/matrix interface was examined through scanning electron microscopy of tensile fracture samples. Addition of jute fibres to oil palm composite increases the storage modulus while damping factor shifts towards higher temperature region. Cole–Cole analysis was made to understand the phase behaviour of the composite samples. The hybrid composite with oil palm:jute (1:4) showed maximum damping behaviour and highest tensile properties. The overall use of hybrid system was found to be effective in increasing tensile and dynamic mechanical properties of the oil palm–epoxy composite probably due to the enhanced fibre/matrix interface bonding. The potential applications of the oil palm based hybrid composites in automobiles and building industry are going to increase in near future.

370 citations

Journal ArticleDOI
TL;DR: In this paper, a green composite was fabricated by reinforcing a cornstarch-based biodegradable resin with high-strength natural fibers extracted from a plant named curaua.
Abstract: This paper describes development and improvement of mechanical properties of a so-called green composite that was fabricated by reinforcing a cornstarch-based biodegradable resin with high-strength natural fibers extracted from a plant named curaua. Two fabrication methods are proposed, in which stretched slivers of curaua fibers are prepared as reinforcement to increase the composite strength. Moreover, highly concentrated alkali treatment was applied to curaua fibers to improve mechanical properties of green composites. Tensile test results showed that alkali-treated fiber composites increased in fracture strain twice to three times more than untreated fiber composites, without a considerable decrease in strength. This result proves that appropriate alkali treatment is a key technology for improving mechanical properties of cellulose-based fiber composites.

274 citations