Advantages Of Hybridization Of Plastics

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ABSTRACT Composites play significant role as engineering material and their use has been increasing day by day due to their specific properties such as high strength to weight ratios, high modulus to weight ratio, corrosion resistance, and wear resistance. In present work, an attempt is made to hybridize the material using synthetic (glass) as well as natural fibers (chemically treated sisal), such that to reduce the overall use of synthetic reinforcement, to reduce the overall cost, and to enhance the mechanical properties. All composite specimens with different weight percentages of fibers were manufactured using hand lay-up process and testing was done by using ASTM standards. Experimental results revealed that hybridization of composite…show more content…
METHODOLOGY Materials. The composite material used in this research Was manufactured using plain weave mat of E-glass fabrics of 0.3mm thickness as synthetic reinforcement. Sisal fibers were used as natural reinforcement and they were dipped for 10 minutes in 10% of NaOH solution for chemical treatment as stated by Rokbi et al. [5]. The matrix material was polyester resin, which is thermoplastic resin and was supplied by Sakshi Dyes & Chemicals, New Delhi, India. Composite manufacturing method There are many techniques available in industries for manufacturing of composites such as compression molding, vacuum molding, pultruding, and resin transfer molding. The hand lay-up process of manufacturing [9] is one of the simplest and easiest methods for manufacturing composites. A primary advantage of the hand lay-up technique is to fabricate very large, complex parts with reduced manufacturing times. Additional benefits are simple equipment and tooling that are relatively less expensive than other manufacturing processes. All composite specimens were manufactured using hand lay-up process. The prepared specimens are shown in Figure…show more content…
Tensile tests were carried out on rectangular specimens of dimensions 165 × 19 × 4mm at room temperature, by the method described in ASTM D638 on Autograph machine. Composite specimens were placed in the grips and were pulled at a speed of 5 mm/min until failure occurred. The strain gauge was used to measure the displacement. Flexural testing commonly known as three-point bending testing was also carried out on autograph machine as per ASTMD790. Composite specimens of dimensions 130 × 12 × 4mmwere horizontally placed on two supports and load was applied at the centre. The deflection was measured by the gauge placed under the specimen, at the centre. Impact testing was carried out on Tinius Olsen machine as per procedure mentioned in ASTM D256. Composite specimens were placed in vertical position (Izod Test) and Hammer was released to make impact on specimen and CRT reader gives the reading of impact strength. Water absorption test was conducted as per ASTMD570. The specimens were first dried in oven, cooled and initial weight was measured. These specimens were immersed in water for 24 hours at room temperature and were dried before final weight measurement. All experimental tests were repeated three times to generate the
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