Investigation of Dielectric Behaviour of Chemically Treated Coir Fiber Reinforced Epoxy Composites

2014 ◽  
Vol 1047 ◽  
pp. 79-84 ◽  
Author(s):  
Alveera Khan ◽  
Shirish Joshi
Keyword(s):  
Epoxy Polymer ◽  
Epoxy Composite ◽  
Waste Product ◽  
Natural Fibers ◽  
Coir Fiber ◽  
Fiber Reinforced ◽  
Synthetic Material ◽  
Xrd Study ◽  
Chemically Treated ◽  
Treated Fiber

The use of natural fibers in making a variety of synthetic material has attracted attentions due to mainly two causes. 1. Making use of waste material into usable composites and 2. To tide over disposal of waste which otherwise causes degradation of environment. In the present study raw coir fiber was chemically treated with nitro compounds. It is a kind of chemical modification of fiber. Treated fiber was reinforced with epoxy polymer in the 1:1:1(resin: hardener: treated fiber). Dielectric estimation of the resulting composite was done with Wayne Kerr impedance analyzer in the temperature range of 30Oto 180OC at different frequencies. Systematic variation in properties was found from pure epoxy composite to fiber reinforced epoxy composite. XRD study reveals that composite is crystalline in nature. Change in morphology of the fiber was found when compared with untreated fiber, which is confirmed by Scanning Electron Microscopy. The objective of this study is to utilize the coir fiber, a waste product found in abundance in nature. If natural fibres could be used as reinforcement material in polymers, it may lead to new dimensions to research in the area of embedded materials. It might prove as an asset in electronic, automobile and engineering fields. It is lightweight; bio-degradability makes it a potential in new arena when India goes green.Keywords: coir, fiber, reinforcement, polymer

Processing of high weight fraction banana fiber reinforced epoxy composites using pressure induced dip casting method

2021 ◽  
pp. 002199832098804
Author(s):  
TP Mohan ◽  
K Kanny
Keyword(s):  
Matrix Composite ◽  
Epoxy Polymer ◽  
Epoxy Composite ◽  
Matrix Material ◽  
Natural Fibers ◽  
Weight Fraction ◽  
Polymer Composite Material ◽  
Fiber Reinforced ◽  
Banana Fiber ◽  
Banana Fibers

The objective of this work is to realize new polymer composite material containing high amount of natural fibers as a bio-based reinforcement phase. Short banana fiber is chosen as a reinforcement material and epoxy polymer as a matrix material. About 77 wt.% of banana fibers were reinforced in the epoxy polymer matrix composite, using pressure induced fiber dipping method. Nanoclay particles were infused into the banana fibers to improve the fiber matrix interface properties. The nanoclay infused banana fiber were used to reinforce epoxy composite and its properties were compared with untreated banana fiber reinforced epoxy composite and banana fiber reinforced epoxy filled with nanoclay matrix composite. The surface characteristics of these composites were examined by electron microscope and the result shows well dispersed fibers in epoxy matrix. Thermal (thermogravimetry analysis and dynamic mechanical analysis), mechanical (tensile and fiber pullout) and water barrier properties of these composites were examined and the result showed that the nanoclay infused banana fiber reinforced epoxy composite shows better and improved properties. Improved surface finish composite was also obtained by this processing technique.

Experimental study on effect of fiber length and fiber content on tensile and flexural properties of bamboo fiber/epoxy composite

2019 ◽  
Vol 15 (5) ◽  
pp. 947-957 ◽  
Author(s):  
Giridharan R. ◽  
Raatan V.S. ◽  
Jenarthanan M.P.
Keyword(s):  
Mechanical Properties ◽  
Fiber Length ◽  
Epoxy Composite ◽  
Natural Fibers ◽  
Weight Ratio ◽  
Fiber Content ◽  
Bamboo Fiber ◽  
Flexural Properties ◽  
Fiber Reinforced ◽  
Content Type

Purpose The purpose of this paper is to study the effects of fiber length and content on properties of E-glass and bamboo fiber reinforced epoxy resin matrices. Experiments are carried out as per ASTM standards to find the mechanical properties. Further, fractured surface of the specimen is subjected to morphological study. Design/methodology/approach Composite samples were prepared according to ASTM standards and were subjected to tensile and flexural loads. The fractured surfaces of the specimens were examined directly under scanning electron microscope. Findings From the experiment, it was found that the main factors that influence the properties of composite are fiber length and content. The optimum fiber length and weight ratio are 15 mm and 16 percent, respectively, for bamboo fiber/epoxy composite. Hence, the prediction of optimum fiber length and content becomes important, so that composite can be prepared with best mechanical properties. The investigation revealed the suitability of bamboo fiber as an effective reinforcement in epoxy matrix. Practical implications As bamboo fibers are biodegradable, recyclable, light weight and so on, their applications are numerous. They are widely used in automotive components, aerospace parts, sporting goods and building industry. With this scenario, the obtained result of bamboo fiber reinforced composites is not ignorable and could be of potential use, since it leads to harnessing of available natural fibers and their composites rather than synthetic fibers. Originality/value This work enlists the effect of fiber length and fiber content on tensile and flexural properties of bamboo fiber/epoxy composite, which has not been attempted so far.

scholarly journals Investigation on mechanical properties and water absorbency of jute glass reinforced epoxy composite

2020 ◽  
Vol 6 (5) ◽  
Author(s):  
Md. Koushic Uddin ◽  
Muksit Ahmed Chowdhury ◽  
Sonia Hossain ◽  
Md Zahidul Islam ◽  
Mohammad Shamim Sardar ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Water Resistance ◽  
Epoxy Composite ◽  
Natural Fibers ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Absorption Properties ◽  
Synthetic Fibers ◽  
Reinforced Composite ◽  
Glass Fiber Reinforced

Fiber reinforced composite materials are attractive because of their properties such as high toughness, water resistance and can be adapted to meet the specific needs of a variety of applications. Incorporation of natural fibers can reduce the dependency over synthetic fibers. In this work, Jute glass fiber reinforced composites are fabricated by simple hand lay-up technique using epoxy resin as a matrix and various mechanical properties like tensile strength, flexural strength, impact strength and also the water absorption properties of the composite specimens are evaluated and analysed thoroughly. It is observed that incorporation of optimum amount of jute fibre with glass fibre improved mechanical properties can be achieved. Finally cost of composites are analysed and compared.

Bit coir fiber and sugarcane bagasse fiber reinforced eco-friendly polypropylene composites: Development and property evaluation thereof

2019 ◽  
Vol 33 (9) ◽  
pp. 1175-1195 ◽  
Author(s):  
Arun M Panicker ◽  
Rose Maria ◽  
KA Rajesh ◽  
TO Varghese
Keyword(s):  
Sugarcane Bagasse ◽  
Polymer Matrix ◽  
Large Scale ◽  
Natural Fibers ◽  
Morphological Characterization ◽  
Coir Fiber ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Polypropylene Composites ◽  
Degradation Temperature

Waste natural fibers, bit coir fiber residue of traditional coir industries, and sugarcane bagasse fibers were subjected to chemical modifications via alkaline steam explosion treatments toward the extraction of reinforcing fibers with better compatibility and reinforcing characteristics in the polymer matrix. The treated fibers were utilized in the fabrication of composites with polypropylene (PP) as the base polymer with the aid of maleic anhydride–grafted PP as the compatibilizer. Percent composition of fiber in the composites was decided to facilitate maximum replacement of the matrix and further applicability in large-scale continuous polymeric production processes. Mechanical, thermal, and morphological characterization of the composites reveals the best composition to be of 30% composition, in the added view of maximum replacement of polymer matrix with the reinforcing filler, retention of requisite properties, reduced cost of manufacture and inventory, and reduction in the carbon footprint per unit dimensions in comparison with the wholly polymer component. The thermal properties of coir fiber-reinforced composites showed good improvement up to 134.5°C increase in onset degradation temperature while retaining matrix properties for sugarcane bagasse-reinforced composites.

Coir Fiber-Reinforced Composites

2016 ◽  
pp. 247-275
Author(s):  
Irem Sanal
Keyword(s):  
Polymer Composites ◽  
Natural Fibers ◽  
Short Fiber ◽  
Fiber Reinforced Polymer ◽  
Coir Fiber ◽  
Fiber Reinforced ◽  
Major Step ◽  
Specific Strength ◽  
Reinforced Polymer ◽  
Fiber Reinforced Polymer Composites

Nowadays, fiber-reinforced polymer composites have played a significant role in many different fields of applications, regarding their high specific strength and high modulus. The fiber which serves as reinforcement mechanism in polymer composites may be either synthetic or natural. Natural fibers are not only strong and lightweight but also very economical and environmental friendly. Natural fibers as reinforcement are stated to be a major step taken in promoting environmental protection and sustainability. There are many types of natural cellulose fibers but the thickest and most resistant of all commercial natural fibers, coir/coconut fiber is a coarse, short fiber extracted from the outer shell of coconuts. Coir/coconut fibers have the highest concentrations of lignin, making it most suitable for applications where slow biodegradability is required. This chapter has been written with an aim to explore the potential of the coconut/coir fiber reinforced polymer composites in terms of their performance, surface treatments/modifications and areas of application.

Physico-mechanical properties of chemically treated palm and coir fiber reinforced polypropylene composites

2009 ◽  
Vol 100 (20) ◽  
pp. 4903-4906 ◽  
Author(s):  
Md. Mominul Haque ◽  
Mahbub Hasan ◽  
Md. Saiful Islam ◽  
Md. Ershad Ali
Keyword(s):  
Mechanical Properties ◽  
Coir Fiber ◽  
Fiber Reinforced ◽  
Polypropylene Composites ◽  
Chemically Treated
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