An experimental study on the effect of nano-clay addition on mechanical and water absorption behaviour of jute fibre reinforced epoxy composites

2018 ◽  
Vol 49 (5) ◽  
pp. 597-620 ◽  
Author(s):  
S Ramakrishnan ◽  
K Krishnamurthy ◽  
R Rajasekar ◽  
G Rajeshkumar
Keyword(s):  
Water Absorption ◽  
Absorption Rate ◽  
Fibre Length ◽  
Weight Fraction ◽  
Epoxy Composites ◽  
Jute Fibre ◽  
Absorption Properties ◽  
Nano Clay ◽  
Naoh Treatment ◽  
Fractured Surface

This study deals with the investigation of the mechanical and water absorption properties of jute fibre reinforced epoxy composites prepared by using hand layup method. The effects of fibre length (10, 20, 30 and 40 mm), fibre weight fraction (0%, 5%, 10%, 15%, 20% and 25%), concentration of NaOH treatment (5% and 10%) and nano-clay addition (1, 3, 5 and 7 wt%) on the aforementioned properties were determined. Morphological characterisation was performed for the tensile and flexural fractured surface of the specimens to study their microstructural failures. The results revealed that the composites reinforced with 5% of NaOH-treated fibre and 5 wt% of nano-clay exhibited higher tensile, flexural and impact strengths of 103.05 MPa, 162.8 MPa and 0.358 kJ/mm2 respectively, and lower water absorption rate. Moreover, the optimum fibre length and fibre weight fraction were found to be 30 mm and 20% respectively for better overall properties. These composites can be used for light and medium load applications.

The influence of fiber content and length on mechanical and water absorption properties of Calotropis Gigantea fiber reinforced epoxy composites

2018 ◽  
Vol 48 (8) ◽  
pp. 1274-1290 ◽  
Author(s):  
K Velusamy ◽  
P Navaneethakrishnan ◽  
G Rajeshkumar ◽  
TP Sathishkumar
Keyword(s):  
Water Absorption ◽  
Fiber Length ◽  
Absorption Rate ◽  
Volume Fraction ◽  
Bath Temperature ◽  
Epoxy Composites ◽  
Fiber Reinforced ◽  
Absorption Properties ◽  
Calotropis Gigantea ◽  
Water Absorption Rate

This work deals with the investigation of mechanical properties and water absorption behavior of Calotropis Gigantea fiber reinforced epoxy composites prepared by using compression molding technique. The experiments were carried out by varying fiber length (10, 20, and 30 mm) and volume fraction (0, 5, 10, 15, 20, 25, and 30%). In addition to this, the water absorption behavior was analyzed at different climatic temperatures of 10℃, 40℃, and 70℃. The composites reinforced with 25% in volume of Calotropis Gigantea fiber showed better tensile, flexural, and impact properties. The hardness value and water absorption rate are higher for composites reinforced with 30% in volume of 30-mm Calotropis Gigantea fibers. Moreover, by increasing the bath temperature, the water absorption rate associated to this class of composite increases.

The Effects of Stacking Sequence on the Mechanical and Water Absorption Properties of Areca-Pineapple Fiber-based Epoxy Composites

2021 ◽  
pp. 1-12
Author(s):  
Vijay Raghunathan ◽  
Jafrey Daniel James Dhilip ◽  
Mohan Ramesh ◽  
Ramprasath Kumaresan ◽  
Srivenkateswaran Govindarajan ◽  
...  
Keyword(s):  
Water Absorption ◽  
Epoxy Composites ◽  
Stacking Sequence ◽  
Absorption Properties

scholarly journals Study the effect of fiber loading and alkali treatment on the mechanical and water absorption properties of wheat straw fiber-reinforced epoxy composites

2017 ◽  
Vol 24 (5) ◽  
pp. 731-738 ◽  
Author(s):  
Varun Mittal ◽  
Shishir Sinha
Keyword(s):  
Mechanical Properties ◽  
Water Absorption ◽  
Epoxy Resin ◽  
Wheat Straw ◽  
Alkali Treatment ◽  
Fiber Composites ◽  
Epoxy Composites ◽  
Absorption Properties ◽  
Fiber Loading ◽  
Treated Fiber

AbstractThe aim of this research was to study the feasibility of using wheat straw fiber with epoxy resin for developing natural fiber-polymer composites. For this purpose, the epoxy resin was reinforced with 5, 10, 15, 20, and 25 wt.% of the wheat straw fiber with the help of the hand lay-up technique. Further, in order to improve the composite characteristic, wheat straw fibers were treated with three different concentrations of alkali (1%, 3%, and 5%). The mechanical and water absorption properties of the treated fiber composites were characterized and compared with those of untreated fiber-filled epoxy composites. It was observed that the mechanical properties and water resistance were reduced with the increase in wheat straw fiber loading from 5 to 25 wt.%. Among the three levels of alkali treatment, the composite made with 3% alkali-treated fiber exhibited superior mechanical properties than the other untreated and treated fiber composites, which pointed to an efficient fiber-matrix adhesion. The scanning electron microscope was used to observe the surface features of the wheat straw fiber.

Water Absorption of Basalt Fiber Reinforced Fir Sawdust Panel

2013 ◽  
Vol 821-822 ◽  
pp. 1171-1174
Author(s):  
Hua Wu Liu ◽  
Kai Fang Xie ◽  
Wei Wei Hu ◽  
Han Sun ◽  
Shu Wei Yang ◽  
...  
Keyword(s):  
Water Absorption ◽  
Absorption Rate ◽  
Moisture Absorption ◽  
Fibre Length ◽  
Basalt Fiber ◽  
Fibre Content ◽  
Wood Composite ◽  
Thickness Swelling ◽  
Basalt Fibre ◽  
Reduced Water

Moisture absorption results in dimensional deformation, mechanical property deterioration and fungi attack in wood composite products, which may be improved by the reinforcement of waterproof material. In this study, we used basalt fibre as a reinforcement material for fir sawdust panels and investigated the influence of basalt fibre content and length on moisture absorption rate and thickness swelling. The reinforced fir sawdust panel groups largely reduced water absorption rate, and the smallest thickness swelling occurred when the content of basalt fibre was 5%. The results also indicated that the basalt fibre content played a more important role than basalt fibre length on the thickness swelling of the reinforced fir sawdust panels.

scholarly journals Effect of impregnation on hybrid mesoporous silica / kenaf reinforced epoxy composites in term of flexural, compressive and water absorption properties

2020 ◽  
Vol 14 (4) ◽  
pp. 7528-7539
Author(s):  
F. Bajuri ◽  
N. Mazlan ◽  
M. R. Ishak ◽  
M. K. A. Uyup
Keyword(s):  
Mesoporous Silica ◽  
Water Absorption ◽  
Water Uptake ◽  
Silica Content ◽  
Epoxy Composites ◽  
Impregnation Method ◽  
Hot Press ◽  
Compressive Properties ◽  
Absorption Properties ◽  
Press Method

In this work, mesoporous silica with designated amount was added in kenaf/epoxy composites to improve the mechanical properties of the composite and reduce the water uptake of fabricated composites. The composites were fabricated using hot press method (HP) and impregnation method (IMP). For HP specimens, silica was dispersed into epoxy resin using homogenizer before being applied to the kenaf mat and subsequently hot pressed. While for IMP specimens, the kenaf mat was placed inside the silica/epoxy solution under 600 mm Hg impregnation pressure before being hot pressed. The results for flexural properties revealed that IMP specimen with 40 vol% of kenaf fibre and 5 vol% of silica have the highest strength and modulus at 78.6 MPa and 5.11 GPa respectively. Same trend can be seen for compressive properties as the same specimen had the highest compressive strength and modulus at 69.3 MPa and 1.81 GPa respectively. Finally for water absorption properties, IMP specimens had a reduction in water uptake compared to its HP specimen counterparts with the same kenaf and silica content. IMP specimen with 60 vol% kenaf and 5 vol% silica had the lowest water uptake after 90 days of immersion in distilled water at 13.5% increase in weight.

Synergistic effect of fiber content and length on mechanical and water absorption behaviors of Phoenix sp. fiber-reinforced epoxy composites

2016 ◽  
Vol 47 (2) ◽  
pp. 211-232 ◽  
Author(s):  
G Rajeshkumar ◽  
V Hariharan ◽  
TP Sathishkumar ◽  
V Fiore ◽  
T Scalici
Keyword(s):  
Mechanical Properties ◽  
Water Absorption ◽  
Dynamic Mechanical Properties ◽  
Short Fiber ◽  
Epoxy Composites ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Absorption Properties ◽  
Dynamic Mechanical ◽  
Properties Of Composites

Phoenix sp. fiber-reinforced epoxy composites have been manufactured using compression molding technique. The effect of reinforcement volume content (0%, 10%, 20%, 30%, 40%, and 50%) and size (300 µm particles, 10 mm, 20 mm, and 30 mm fibers) on quasi-static and dynamic mechanical properties was investigated. Moreover, the water absorption properties of composites were analyzed at different environmental conditions (10℃, 30℃, and 60℃). For each reinforcement size, composites loaded with 40% in volume show highest tensile and flexural properties. Furthermore, composites with 300 µm particles present the best impact properties and the lowest water absorption, regardless of the environmental condition. The dynamic mechanical properties of the composites loaded with 40% in volume were analyzed by varying the reinforcement size and the load frequency (i.e., 0.5 Hz, 1 Hz, 2 Hz, 5 Hz, and 10 Hz). It was found that the glass transition temperature of short fiber-reinforced composites is higher than that of the composite loaded with particles.

Study and evaluation of the mechanical properties on sawdust reinforced epoxy composite

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Shailendra Singh Chauhan ◽  
Vaibhav Singh ◽  
Gauranshu Saini ◽  
Nitin Kaushik ◽  
Vishal Pandey ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Water Absorption ◽  
Epoxy Composite ◽  
Research Work ◽  
Processing Parameters ◽  
Epoxy Composites ◽  
Green Composite ◽  
Absorption Properties ◽  
Content Type ◽  
The Impact

Purpose The growing environmental awareness all through the world has motivated a standard change toward planning and designing better materials having good performance, which are very much suited to the environmental factors. The purpose of this study is to investigate the impact on mechanical, thermal and water absorption properties of sawdust-based composites reinforced by epoxy, and the amount of sawdust in each form. Design/methodology/approach Manufacturing of the sawdust reinforced epoxy composites is the main area of the research for promoting the green composite by having good mechanical properties, biodegradability or many applications. Throughout this research work, the authors emphasize the importance of explaining the methodology for the evaluation of the mechanical and water absorption properties of the sawdust reinforced epoxy composites used by researchers. Findings In this paper, a comprehensive review of the mechanical properties of sawdust reinforced epoxy composite is presented. This study is reported about the use of different Wt.% of sawdust composites prepared by different processes and their mechanical, thermal and water absorption properties. It is studied that after optimum filler percentage, mechanical, thermal properties gradually decrease, but water absorption property increases with Wt.% of sawdust. The changes in the microstructure are studied by using scanning electron microscopy. Originality/value The novelty of this study lies in its use of a systematic approach that offers a perspective on choosing suitable processing parameters for the fabrication of composite materials for persons from both industry and academia. A study of sawdust reinforced epoxy composites guides new researchers in the fabrication and characterization of the materials.

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.

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