Influence of fiber surface treatments on physico-mechanical behaviour of jute/epoxy composites impregnated with aluminium oxide filler

2017 ◽  
Vol 51 (28) ◽  
pp. 3909-3922 ◽  
Author(s):  
Priyadarshi Tapas Ranjan Swain ◽  
Sandhyarani Biswas
Keyword(s):  
Water Absorption ◽  
Benzoyl Chloride ◽  
Moisture Absorption ◽  
Natural Fiber ◽  
Hybrid Composites ◽  
Aluminium Oxide ◽  
Fiber Surface ◽  
Epoxy Composites ◽  
Fiber Reinforced ◽  
Chemically Treated

The present paper discovers the effect of ceramic filler inclusion on physico-mechanical and water absorption behaviour of untreated and chemically treated (alkali and benzoyl chloride treated) bi-directional jute natural-fiber-reinforced epoxy composites. In practice, the major drawbacks of using natural fibers are their high degree of moisture absorption and poor dimensional stability. Currently, chemical treatments are able to induce fiber modifications that increase their resistance when utilized in composite products. Jute fibers were subjected to various chemical modifications to improve the interfacial bonding with the matrix. In this study, an analysis has been carried out to make pre-treated jute fiber (10, 20, 30 and 40 wt.%) and different filler content (5 and 10 wt.%) with epoxy-based composites. A comparative study of all the untreated jute/aluminium oxide based hybrid composites with chemically treated jute/aluminium oxide based hybrid composites was carried out. The investigational result reveals that chemically treated composites considerably improved the mechanical properties of the composite. The maximum water absorption resistance and strength properties were found with benzoyl chloride-treated fiber-reinforced composite. Lastly, the surface morphology of fractured surfaces after tensile and flexural testing is studied using scanning electron microscope.

scholarly journals Moisture Absorption Studies of COIR and Sisal Short Fiber Reinforced Polymer Composites

2021 ◽  
Vol 9 (9) ◽  
pp. 116-127
Author(s):  
Ambareesh K V
Keyword(s):  
Water Absorption ◽  
Polymer Composites ◽  
Moisture Absorption ◽  
Natural Fiber ◽  
Sea Water ◽  
Natural Fibre ◽  
Epoxy Composites ◽  
Fiber Reinforced ◽  
Short Fibers ◽  
Reinforced Polymer

Abstract: Easy availability of natural fibre, low cost and ease of manufacturing have urged the attention of researchers towards the possibility of reinforcement of natural fiber to improve their mechanical properties and study the extent to which they satisfy the required specifications of good reinforced polymer composite for industrial and structural applications. Polymer composites made of natural fiber is susceptible for moisture. Moisture absorption in such composites mainly because of hydrophilic nature of natural fibers. Water uptake of natural fiber reinforced composites has an effect on different. Lot of researchers prepared the natural fiber reinforced composites without conducting water absorption tests; hence it is the potential area to investigate the behavior of the composites with different moisture absorption. In this research the experimental sequence and the materials are used for the study of coir and Sisal short fiber reinforced epoxy matrix composites. The coir and Sisal short fibers are made into the short fibers with 10 mm x 10 mm x 5 mm size. The Epoxy Resin-LY556(Di glycidyl ether of bi phenol) and Hardner-HYD951 (Tetra mine), the water absorption behaviors are analyzed in the coir and Sisal short fibers reinforced epoxy composites. The water absorption behaviors of the epoxy composites reinforced with the coir and sisal short fibers with 25, 30 and 35wt% were analyzed at three different water environments, such as sea water, distilled water, and tap water for 12 days at room temperature. It was observed that the composites show the high level of the water absorption percentage at sea water immersion as compared to the other water environments. Due to the water absorption, the mechanical properties of macro particle/epoxy composites were decreased at all weight percentages. Keywords: Natural fibre, Moisture absorption, Coir and sisal short fibre, Reinforced polymer composites, Water absorption behaviour Polymer matrix composite (Epoxy resin) using Coir and sisal short fibre and to study its moisture absorption behaviour

scholarly journals Development and Testing of Pine Apple and Glass Fiber Reinforced Epoxy Hybrid Composites

2019 ◽  
Vol 8 (3) ◽  
pp. 2450-2453
Keyword(s):  
Mechanical Properties ◽  
Glass Fiber ◽  
Natural Fiber ◽  
Hybrid Composites ◽  
Natural Fibers ◽  
Fiber Composites ◽  
Epoxy Composites ◽  
Fiber Reinforced ◽  
Synthetic Fibers ◽  
Glass Fiber Reinforced

Usage of Natural Fiber Composites (NFC) is increased rapidly due to the bio degradability nature of the fibers. These natural fibers are mixed with synthetic fibers to obtain better mechanical properties. In this study, pine apple and glass fiber reinforced epoxy composites are developed and their mechanical properties were evaluated. Composites were prepared by varying the fibers content and by using hand layup process with glass moulds of size 160 x 160 x 3 mm3 . The obtained laminates were sliced as per the ASTM criterion to test the properties. Higher glass fiber content in the composite specimen obtained higher mechanical properties. The composites can be utilized for the purpose of manufacturing components like doors panels, desks, roof tops etc.

The Influence of Moisture Absorption on the Mechanical and Thermal Properties of Chemically Treated DPL Reinforced Hybrid Composite

2020 ◽  
Vol 978 ◽  
pp. 316-322 ◽  
Author(s):  
Priyadarshi Tapas Ranjan Swain ◽  
Sankar Narayan Das ◽  
Prabina Kumar Patnaik ◽  
Abhilash Purohit
Keyword(s):  
Thermal Properties ◽  
Glass Fiber ◽  
Moisture Absorption ◽  
Natural Fiber ◽  
Hybrid Composites ◽  
Synthetic Fiber ◽  
Differential Scanning Calorimetric ◽  
Mechanical And Thermal Properties ◽  
Weight Percentage ◽  
Chemically Treated

Moisture absorption of natural fiber-based composites is one of the major problems in outdoor applications. The present study deals with the effect of moisture absorption on mechanical and thermal properties of unmodified/modified Date Palm Leaf (DPL) with glass fiber-based hybrid composites. Natural fibers were modified with alkaline treatment to improve fiber and matrix bonding. Conventional hand lay-up technique is used to fabricate the composites with varying different wt.% of treated and untreated short DPL with constant wt.% of glass fiber and prepared with random oriented manner. The combine effect of hydrophilic and hydrophobic nature find out as the study based upon the natural with synthetic fiber hybrid composites. Mechanical behaviour of the epoxy-based hybrid composites were characterized by using tensile, flexural and hardness test. The results revealed that significant improvement in mechanical properties by the addition of different weight percentage of modified DPL. Different thermal properties of the composites were described by using Thermo Gravimetric Analyzer (TGA) and Differential Scanning Calorimetric (DSC). Morphological investigation was carried out to by using scanning electron microscope. All the properties of untreated natural fiber reinforced composites were mostly affected by the influence of water absorption as compared with chemically treated based composites.

Thermo-physical properties of short banana–jute fiber-reinforced epoxy-based hybrid composites

2016 ◽  
Vol 232 (11) ◽  
pp. 939-951 ◽  
Author(s):  
Siva Bhaskara Rao Devireddy ◽  
Sandhyarani Biswas
Keyword(s):  
Thermal Conductivity ◽  
Thermal Diffusivity ◽  
Water Absorption ◽  
Effective Thermal Conductivity ◽  
Natural Fiber ◽  
Hybrid Composites ◽  
Jute Fiber ◽  
Void Content ◽  
Fiber Reinforced ◽  
Proposed Model

The utilization of natural fiber-reinforced polymer composites is rapidly increasing in many industrial applications and fundamental research. In this work, short banana-jute fiber-reinforced epoxy-based hybrid composite was prepared by varying the fiber loading (0–40 wt.%) and different weight ratios of banana and jute fiber (1:1, 1:3, and 3:1). The physical and thermal properties such as density, water absorption, thermal conductivity, specific heat and thermal diffusivity were evaluated as per ASTM standards. A new micromechanical model was developed for evaluating the effective thermal conductivity of short fiber-reinforced hybrid composites by using the law of minimal thermal resistance and equal law of specific equivalent thermal conductivity. The thermal conductivity was calculated numerically by using the steady state heat transfer simulations. The proposed model and numerical results were validated with the experimental results and analytical methods existing in the literature. The effective thermal conductivity was predicted with the proposed model, and the finite element method is in good agreement with the experimental values and observed an acceptable range of 0–6.5% and 0–11% error, respectively. The results reveal that the composite made with banana and jute in the weight ratio of 1:3 shows minimum void content, water absorption, thermal conductivity, and thermal diffusivity at all fiber loadings. The fabricated hybrid composites were suitable for building components and automobiles in order to reduce the energy consumption.

scholarly journals The Effect of Hybridisation on Mechanical Properties and Water Absorption Behaviour of Woven Jute/Ramie Reinforced Epoxy Composites

Polymers ◽  
2021 ◽  
Vol 13 (17) ◽  
pp. 2964
Author(s):  
Cionita Tezara ◽  
Agung Efriyo Hadi ◽  
Januar Parlaungan Siregar ◽  
Zalinawati Muhamad ◽  
Mohammad Hazim Mohamad Hamdan ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Water Absorption ◽  
Moisture Absorption ◽  
Hybrid Composites ◽  
Critical Issue ◽  
Natural Fibre ◽  
Industrial Applications ◽  
Epoxy Composites ◽  
Aqueous Environment ◽  
Stacking Sequence

Recently, the most critical issue related to the use of natural fibre-reinforced polymer composites (NFRPC) is the degradation properties of composites exposed to the environment. NFRPC’s moisture absorption behaviour has adverse effects on the composite’s mechanical properties and dimensional stability. The purpose of this study is to analyse the mechanical properties of epoxy composites reinforced by jute–ramie hybridisation. This study also analysed the effect of stacking sequence hybridisation of the jute–ramie composite on water absorption behaviour. A five-layer different type of stacking sequence of single and hybrid jute–ramie is produced with the hand lay-up method. The results obtained from this study found that the mechanical properties and water absorption behaviour of a single jute fibre are lower compared to a single ramie fibre. The hybrid of jute–ramie has been able to increase the performance of composite compared to pure jute composites. The mechanical properties of the hybrid jute–ramie composite show a reduction effect after exposure to an aqueous environment due to the breakdown of fibre matrix interfacial bonding. However, after 28 days of immersion, all types of the stacking sequence’s mechanical properties are still higher than that of pure epoxy resin. In conclusion, the appropriate sequence of stacking and selecting the material used are two factors that predominantly affect the mechanical properties and water absorption behaviour. The hybrid composites with the desired and preferable properties can be manufactured using a hand-lay-up technique and used in the various industrial applications.

scholarly journals Influence of Accelerated Weathering on the Mechanical, Fracture Morphology, Thermal Stability, Contact Angle, and Water Absorption Properties of Natural Fiber Fabric-Based Epoxy Hybrid Composites

Polymers ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2254
Author(s):  
Krittirash Yorseng ◽  
Sanjay Mavinkere Rangappa ◽  
Jyotishkumar Parameswaranpillai ◽  
Suchart Siengchin
Keyword(s):  
Contact Angle ◽  
Water Absorption ◽  
Natural Fiber ◽  
Hybrid Composites ◽  
Thermal Contact ◽  
Fracture Morphology ◽  
Epoxy Composites ◽  
Accelerated Weathering ◽  
Absorption Properties ◽  
Mechanical Fracture

Epoxy-based biocomposites are a good alternative for metals in lightweight applications. This research has been focused on the effect of accelerated weathering on the mechanical, thermal, contact angle, and water absorption behavior of neat epoxy, individual kenaf and sisal, and kenaf/sisal hybrid epoxy composites. The composite was fabricated by hand layup method. Among the various composites studied, sisal/kenaf/sisal hybrid epoxy composites showed the best properties and retained the thermo-mechanical properties with the lowest water absorption properties even after the weathering test. Thus, composites with hybridized kenaf and sisal with sisal outer layer are encouraging semistructural materials in outdoor applications.

A Review of Chemical Treatments on Natural Fibers-Based Hybrid Composites for Engineering Applications

2018 ◽  
pp. 16-37
Author(s):  
Sudeepan Jayapalan
Keyword(s):  
Moisture Absorption ◽  
Natural Fiber ◽  
Hybrid Composites ◽  
Low Cost ◽  
Natural Fibers ◽  
Fiber Surface ◽  
Physical And Mechanical Properties ◽  
Engineering Applications ◽  
Chemical Treatments ◽  
Water Absorption Property

The development of hybrid-fiber-reinforced composites has increased in recent decades because of its abundance, low cost, low weight, high strength, stiffness, and bio-degradability, thereby increasing its engineering applications. However, the major drawbacks of natural fibers in composites are their high moisture absorption and poor compatibility between fiber and matrix. Hence, chemical treatments are primarily considered to modify the fiber surfaces with the objective to improve interfacial bonding between fiber and matrix. This chapter addresses an overview of chemical treatments and their effects on natural fibers-based hybrid composites are reviewed. The chemical treatments include alkali, silane, maleated, and others, focused mainly on hybrid natural fiber composites. The significance of chemical treatment of natural fibers aimed to improve adhesion between fiber surface and matrix along with reduction in water absorption property to improve physical and mechanical properties as compared with untreated fibers for use in components of engineering applications is explored.

Water Absorption in Composites Reinforced with Caroá Fiber Fabrics: Modeling and Simulation via ANSYS CFX®

2014 ◽  
Vol 353 ◽  
pp. 84-89 ◽  
Author(s):  
C.J. Silva ◽  
T.H.F. de Andrade ◽  
E.G. Silva ◽  
Antônio Gilson Barbosa de Lima
Keyword(s):  
Moisture Content ◽  
Water Absorption ◽  
Moisture Absorption ◽  
Natural Fiber ◽  
Unsaturated Polyester ◽  
Fiber Reinforced Composites ◽  
Synthetic Fiber ◽  
Average Moisture Content ◽  
Reinforced Composites ◽  
Fiber Reinforced

Studies in polymer composites reinforced with vegetable fiber show that they are enough sensitive to influences from environmental agents such as water and temperature. The moisture causes degradation of the mechanical properties of natural fiber reinforced composites to a large extent when compared to synthetic fiber reinforced composites. This is a consequence of the higher moisture absorption, and the hydrofilic nature of the natural fiber. In this sense, the purpose of this work is to study theoretically the water absorption in unsaturated polyester composites reinforced with caroá natural fiber (Neoglazioviavariegata) at the temperature 50°C. The composite had a weight composition of 30% caroá and 70% unsaturated polyester resin and dimensions of 20× 20× 3 mm3. Results of the average moisture content and moisture content distribution during the absorption process are presented and analyzed. Comparison between numerical and experimental data of the average moisture content presented good agreement. We conclude that the water absorption rate is faster in the vertex region of the composites.

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