Tensile Behavior of Epoxy Composites Reinforced with Thinner Sisal Fibers

2016 ◽  
Vol 869 ◽  
pp. 249-254
Author(s):  
Lazaro Araújo Rohen ◽  
Anna Carolina Cerqueira Neves ◽  
Frederico Muylaert Margem ◽  
Carlos Maurício Fontes Vieira ◽  
Fabio de Oliveira Braga ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Elastic Modulus ◽  
Polymer Matrix Composites ◽  
Low Cost ◽  
Natural Fibers ◽  
Tensile Behavior ◽  
Epoxy Composites ◽  
Matrix Composites ◽  
Synthetic Fibers ◽  
Sisal Fibers

The use of natural fibers as reinforcement in polymer matrix composites is replacing the use of synthetic fibers, especially from an environmental standpoint. Indeed, natural fibers are biodegradable and renewable, with no aggression to the environment. Moreover, they are worldwide abundant with relatively low cost. It was found that fine fibers of sisal, with the thinnest diameters can achieve tensile strength on the order of 1000 MPa. In this work, tensile specimens were prepared with 30% in volume of sisal fibers with diameters between 0.1 and 0.10mm incorporated in a continuous and aligned way into epoxy matrix. The results showed a significant increase in tensile strength and elastic modulus of the composites as a function of the incorporated amount of thinner sisal fibers.

Comparative Analysis of the Tensile Properties of Polyester and Epoxy Composites Reinforced with Hemp Fibers

2018 ◽  
Vol 930 ◽  
pp. 201-206
Author(s):  
Lazaro Araújo Rohen ◽  
Anna Carolina Cerqueira Neves ◽  
Jheison Lopes dos Santos ◽  
Lucio Fabio Cassiano Nascimento ◽  
Sergio Neves Monteiro ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Elastic Modulus ◽  
Tensile Properties ◽  
Epoxy Matrix ◽  
Fiber Composites ◽  
Epoxy Composites ◽  
Matrix Composites ◽  
Hemp Fiber ◽  
Hemp Fibers ◽  
Polyester Matrix

The present work compares the tensile properties of polyester and epoxy matrix composites reinforced with hemp fibers. Polyester and epoxy reinforced with different volume fractions of hemp fibers up to 30% were prepared according to ASTM D-638-14 and tensile tested. The epoxy matrix composites reinforced with 30% of fibers presented tensile strength of 53 MPa, while those of polyester matrix, 25 MPa. The elastic modulus of the epoxy matrix composites was 1.75 GPa and that of the polyester matrix 4.05 GPa. The tests showed that the resistance of the epoxy composites reinforced with hemp fiber is superior to those of polyester matrix. However, the stiffness of the polyester/hemp fiber composites is higher than the epoxy/hemp fiber ones.

Graphite/Bio-Based Epoxy Composites: The Mechanical Properties Interface

2015 ◽  
Vol 799-800 ◽  
pp. 115-119 ◽  
Author(s):  
Anika Zafiah M. Rus ◽  
Nur Munirah Abdullah ◽  
M.F.L. Abdullah ◽  
M. Izzul Faiz Idris
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Elastic Modulus ◽  
Filler Content ◽  
Weight Percent ◽  
Epoxy Composites ◽  
Elongation At Break ◽  
Graphite Content ◽  
Dispersion Condition ◽  
Strong Interfacial Bonding

Graphite reinforced bio-based epoxy composites with different particulate fractions of graphite were investigated for mechanical properties such as tensile strength, elastic modulus and elongation at break. The graphite content was varied from 5 wt.%, 10 wt.%, 15 wt.%, 20 wt.%, 25 wt.%, 30 wt.% by weight percent in the composites. The results showed that the mechanical properties of the composites mainly depend on dispersion condition of the treated graphite filler, aggregate structure and strong interfacial bonding between treated graphite in the bio-based epoxy matrix. The composites showed improved tensile strength and elastic modulus with increase treated graphite weight loading. This also revealed the composites with increasing filler content was decreasing the elongation at break.

scholarly journals Utilization of Leather Waste Fibers in Polymer Matrix Composites Based on Acrylonitrile-Butadiene Rubber

Polymers ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 117
Author(s):  
Le Thuy Hang ◽  
Do Quoc Viet ◽  
Nguyen Pham Duy Linh ◽  
Vu Anh Doan ◽  
Hai-Linh Thi Dang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Polymer Matrix Composites ◽  
Waste Product ◽  
Dynamic Mechanical Properties ◽  
Hammer Mill ◽  
Butadiene Rubber ◽  
Matrix Composites ◽  
Leather Industry ◽  
Tear Strength

In this study, we present the fabrication of nitrile butadiene rubber/waste leather fiber (NBR/WLF) composites with different weight percentages of WLF and NBR (0/100, 20/80, 30/70, 40/60, 50/50, 60/40 wt/wt). WLF was prepared by cutting the scrap leathers from the waste product of the Vietnamese leather industry. Subsequently, in order to make the short fibers, it was mixed by a hammer mill. The characteristics of WLF/NBR composites such as mechanical properties (tensile strength, tear strength, hardness), dynamic mechanical properties, toluene absorption, and morphology were carefully evaluated. As a result, the tensile strength and tear strength become larger with increasing WLF content from 0 to 50 wt% and they decrease when further increasing WLF content. The highest tensile strength of 12.5 MPa and tear strength of 72.47 N/mm were achieved with the WLF/NBR ratio of 50/50 wt%. Both hardness and resistance of the developed materials with toluene increased with increasing WLF content. The SEM results showed a good adhesion of NBR matrix and the WLF. The increasing of storage modulus (E’) in comparison with raw NBR showed good compatibility between WLF and NBR matrix. This research showed that the recycled material from waste leather and NBR was successfully prepared and has great potential for manufacturing products such as floor covering courts and playgrounds, etc.

scholarly journals CHARACTERIZATION OF SISAL FIBERS BY INFRARED, UV-VIS DIFFUSE REFLECTANCE AND SCANNING ELECTRON MICROSCOPY

2019 ◽  
Vol 16 (31) ◽  
pp. 111-125
Author(s):  
Laudenor AMORIM ◽  
Santino Loruan Silvestre DE MELO ◽  
Sérgio Luís Moura DE PAIVA JÚNIOR ◽  
Enio Pontes DE DEUS
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Diffuse Reflectance ◽  
Polymer Matrix Composites ◽  
Impact Resistance ◽  
Morphological Characterization ◽  
Matrix Composites ◽  
Composites Materials ◽  
Sisal Fibers ◽  
Scanning Electron

The development of more resistant and inexpensive materials were important for the emergence of composites, materials that are the result of the mixing of two or more distinct components with improved properties. Vegetable fibers reinforced polymer matrix composites help to reduce costs as well as to preserve product quality. Sisal fibers are important due to good impact resistance and availability. Thus, the characterization used infrared spectroscopy and UV-Vis diffuse reflectance. The main purpose was to adapt the methodology used, in order to improve fiber-matrix adhesion, but without risks of fiber defibrillation. Scanning electron microscopy was used to obtain the morphological characterization and the energy-dispersive X-Ray spectroscopy to describe the elemental chemical composition of the fibers. Chemical treatments using NaOH 2% and acetylation with acetic acid and acetic anhydride in the ratio (1:1,5) were important to observe the main changes such as the removal of impurities and the smaller amount of water absorbed in the acetylated fiber, which allows a better adhesion of the fibers with a polymer. After this, the fibers can be used to the production of polypropylene and polyethylene composites that are expected to apply in automotive parts such as bumpers, fuel tanks and internal coatings.

The influence of functionalization time of carbon nanotube on the mechanical properties of the epoxy composites

2017 ◽  
Vol 51 (12) ◽  
pp. 1693-1701 ◽  
Author(s):  
EA Zakharychev ◽  
EN Razov ◽  
Yu D Semchikov ◽  
NS Zakharycheva ◽  
MA Kabina
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Tensile Strength ◽  
Elastic Modulus ◽  
Carbon Nanotube ◽  
Composite Materials ◽  
Polymer Composites ◽  
Epoxy Composites ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

This paper investigates the structure, length, and percentage of functional groups of multi-walled carbon nanotubes (CNT) depending on the time taken for functionalization in HNO3 and H2SO4 mixture. The carbon nanotube content and influence of functionalization time on mechanical properties of polymer composite materials based on epoxy matrix are studied. The extreme dependencies of mechanical properties of carbon nanotube functionalization time of polymer composites were established. The rise in tensile strength of obtained composites reaches 102% and elastic modulus reaches 227% as compared to that of unfilled polymer. The composites exhibited best mechanical properties by including carbon nanotube with 0.5 h functionalization time.

scholarly journals Jute Based Bio and Hybrid Composites and Their Applications

Fibers ◽  
2019 ◽  
Vol 7 (9) ◽  
pp. 77 ◽  
Author(s):  
Muhammad Ahsan Ashraf ◽  
Mohammed Zwawi ◽  
Muhammad Taqi Mehran ◽  
Ramesh Kanthasamy ◽  
Ali Bahadar
Keyword(s):  
Physical Properties ◽  
Hybrid Composites ◽  
Low Cost ◽  
Natural Fibers ◽  
Vast Number ◽  
Fiber Modification ◽  
Synthetic Fibers ◽  
Structure Morphology ◽  
Mechanical And Physical Properties ◽  
Recent Developments

The popularity of jute-based bio and hybrid composites is mainly due to an increase in environmental concerns and pollution. Jute fibers have low cost, high abundance, and reasonable mechanical properties. Research in all-natural fibers and composites have increased exponentially due to the environment concerns of the hazards of synthetic fibers-based composites. Jute based bio and hybrid composites have been extensively used in number of applications. Hybrid jute-based composites have enhanced mechanical and physical properties, reasonably better than jute fiber composites. A detailed analysis of jute-based bio and hybrid composites was carried out in this review. The primary aim of this review paper is to provide a critical analysis and to discuss all recent developments in jute-based composites. The content covers different aspects of jute-based composites, including their mechanical and physical properties, structure, morphology, chemical composition, fiber modification techniques, surface treatments, jute based hybrid composites, limitations, and applications. Jute-based composites are currently being used in a vast number of applications such as in textiles, construction, cosmetics, medical, packaging, automobile, and furniture industries.

scholarly journals Influence of Treated Natural Jute Fiber on Flexural Properties of Reinforced Concrete Beams

2018 ◽  
Vol 7 (3.12) ◽  
pp. 148 ◽  
Author(s):  
Bharathi Murugan.R ◽  
Ajit Gayke ◽  
Natarajan C ◽  
Haridharan. M.K ◽  
Murali G ◽  
...  
Keyword(s):  
Low Cost ◽  
Natural Fibers ◽  
Reinforced Concrete Beams ◽  
Jute Fiber ◽  
Tension Zone ◽  
Synthetic Fibers ◽  
Stiffness Characteristic ◽  
Fiber Concrete ◽  
Recent Trends ◽  
Potential Use

India is one of the largest producers of jute, its potential use in many branches of engineering should be developed for the prosperity of the nation. The recent trends in utilizing the natural fibers has increased due to its advantages over synthetic fibers due to low cost, low environment hazard and easy availability. The properties of the fiber is improved by treating the jute fiber with alkali and latex polymer. Since, very few studies been conducted using the treated jute fiber concrete, an experimental work was carried with 0.6% as optimum percentage of treated jute fibers based on the mechanical properties of concrete. The influence of flexural characteristics of concrete was compared with control beams and beams cast with fibers in whole area and also only in tension zone of beam for M20 and M25 concrete grade. The beams with fibers of whole area had better strength, stiffness characteristic than the control beam and the beam with fibers in tension zone only. The initial cracking load was increased by 12.92% and 11.23 % and ultimate load was increased by 6.94% and 7. 20% for the beams cast with fibers in whole area for M20 and M25 grade of concrete, respectively.  

Tensile Properties of Epoxy Composites Reinforced with Continuous Sisal Fibers

2014 ◽  
Vol 775-776 ◽  
pp. 284-289 ◽  
Author(s):  
Sergio Neves Monteiro ◽  
Frederico Muylaert Margem ◽  
Wellington Pereira Inácio ◽  
Artur Camposo Pereira ◽  
Michel Picanço Oliveira
Keyword(s):  
Mechanical Properties ◽  
Tensile Properties ◽  
Epoxy Matrix ◽  
Room Temperature ◽  
Fracture Analysis ◽  
Epoxy Composites ◽  
Matrix Composites ◽  
Matrix Interface ◽  
Fiber Matrix Interface ◽  
Sisal Fibers

The tensile properties of DGEBA/TETA epoxy matrix composites reinforced with different amounts of sisal fibers were evaluated. Composites reinforce with up to 30% in volume of long, continuous and aligned sisal fibers were room temperature tested in an Instron machine. The fracture was analyzed by SEM. The results showed significant changes in the mechanical properties with the amount of sisal fibers. These mechanical properties were compared with other bend-tested composites results. The fracture analysis revealed a weak fiber/matrix interface, which could be responsible for the performance of some properties.

Influence of Montmorillonite Treated with Cetyl Trimethyl Ammonium Bromide Addition in Epoxy-Kenaf Composites

2015 ◽  
Vol 754-755 ◽  
pp. 235-239
Author(s):  
A. Zuliahani ◽  
H.D. Rozman ◽  
Abdul Rahman Rozyanty
Keyword(s):  
Cetyl Trimethyl Ammonium Bromide ◽  
Natural Fiber ◽  
Environmental Concern ◽  
Low Cost ◽  
Natural Fibers ◽  
Synthetic Fiber ◽  
Ammonium Bromide ◽  
Synthetic Fibers ◽  
Cetyl Trimethyl Ammonium ◽  
Kenaf Composites

The use of natural fiber as reinforcement in polymer composites has gained importance recently due to environmental concern and its abundance availability from agricultural crops and wood industry [1]. Many advantages offered by natural fibers over synthetic fibers include low density, greater deformability, low cost per unit volume, recyclability and biodegradability [2-3]. In addition, the mechanical properties of natural fibers such as flax, hemp, jute, sisal and kenaf are comparable with glass fiber in respect of strength and modulus [4]. Hence, many studies have been carried out to replace the synthetic fiber for composite preparation.

Determination of Vibrational Characteristics of Coir, Banana and Aloe Vera Fibres Reinforced Hybrid Polymer Matrix Composites

2019 ◽  
Vol 24 (No 1) ◽  
pp. 12-19
Author(s):  
S. Vimal Anand ◽  
G. Venkatachalam ◽  
Tushar D. Nikam ◽  
Omkar V. Jog ◽  
Ravi T. Suryawanshi
Keyword(s):  
Polymer Matrix Composites ◽  
Low Cost ◽  
Aloe Vera ◽  
Natural Fibre ◽  
Fibre Volume ◽  
Matrix Composites ◽  
Green Composites ◽  
Hybrid Polymer ◽  
The Matrix ◽  
Vibrational Characteristics

In the last few years, green composites are becoming more suitable for applications over synthetic composite. There has been a growing interest in recent years in the utilisation of natural fibres in making low-cost building material. However, these natural fibre-based composites are not fully environmentally friendly because the matrix resins are non-biodegradable. In this paper, an attempt is made to fabricate green composites with coir, banana, and aloe vera fibres as reinforcement and hybrid polymer as matrix. The hybrid polymer is prepared from natural and synthetic resins. This work intends to find the vibrational characteristics of these composites. The influence of three parameters, i.e. CNSL in hybrid polymer, fibre volume, and fibre discontinuities on vibrational characteristics are considered. This work is carried out using FEA and the FEA results are validated by experimental results.

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