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Syntactic Foam Are Composite Materials. It Is Closed Cell Composite

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Syntactic Foam Are Composite Materials. It Is Closed Cell Composite ELK ASIA PACIFIC JOURNAL OF MECHANICAL ENGINEERING AND RESEARCH- SPECIAL ISSUE ISSN 2349-9368(Online);EAPJMER/ISSN.2454-2962/2016; National Conference on Futuristics in Mechanical Engineering Madan Mohan Malaviya University of Technology DEVELOPMENT OF EPOXY-THERMOPLASTIC BASED SYNTACTIC FOAM FOR STRUCTURAL APPLICATION Pooja Kannojiya Vipin Kumar Shubham Kumar Vivek Yadav Mr. Dhirendra Student, Dept. of Student, Dept. of Student, Dept. of Student, Dept. of Kumar Mechanical Engg. Mechanical Engg. Mechanical Engg. Mechanical Engg. Assistant Professor, (Buddha Institute of (Buddha Institute of (Buddha Institute of (Buddha Institute of (Buddha Institute of Technology Gida, Technology Gida, Technology Gida, Technology Gida, Technology Gida, Gorakhpur) Gorakhpur) Gorakhpur) Gorakhpur) Gorakhpur) ABSTRACT The present work is focused on the synthesis and study of the deformation behavior of epoxy resin/ plastic syntactic foams. Different densities syntactic foams with 0 to 40 volume percentages of plastic were prepared by casting method for the present investigation. The high viscosities of the resin- plastic mixture (putty like consistency) beyond 40 volume percentage prevents processing of higher plastic content syntactic foam. The effect of plastic content on tensile, compression, Flexural and impact properties were studied in detailed. Syntactic Foam means a closed packed cell or matrix. In this project we make a composite material with the help of Epoxy Resin and Adding the Reinforcement is waste Thermoplastic and study the mechanical properties of this composite material. Keywords:Epoxy resin, Hardener, Thermoplastic, Syntactic foam. INTRODUCTION material is a material made from two or Syntactic foam are composite materials. It is more constituent materials with significantly closed cell composite material mixed in a different physical or chemical properties. resinous matrix. Which have very good When combined, produce a materials with mechanical properties, insulation properties, characteristics different from the individual low thermal expansion and low moisture components. The individual components absorption capacity, etc. It is developed for remain separate and distinct within the sea application because it is light in weight finished structure, differentiating composites also its application in ship structure and from mixtures and solid solutions. spacecraft. Syntactic foam are used as core material as a sandwich structure in LITERATURE REVIEW composite. The advantage of syntactic foam Ho Sung Kim et.al.[1] work on fracture and have over conventional open cell structure, impact behavior of hollow honey comb structures. A composite microsphere/epoxy resin composite authors 184 ELK ASIA PACIFIC JOURNAL OF MECHANICAL ENGINEERING AND RESEARCH- SPECIAL ISSUE ISSN 2349-9368(Online);EAPJMER/ISSN.2454-2962/2016; National Conference on Futuristics in Mechanical Engineering Madan Mohan Malaviya University of Technology observed that the impact strength of fiber and glass bead hybrids on notched and composite decrease with increase in volume unnotched sample Authors observed that percentage of glass micro balloon this was impact energy decrease with increase in due to the breakage of specimen at high volume fraction of glass beads because volume fraction and strength of glass vacuole growth in impact test is absent and balloon was less. at high speed extensibility of matrix was G Raghvendraet.al. [2] studied A reduced. Comparative Analysis of Woven Jute/Glass Chun-Ki Lam et.al.[21] studied Cluster size Hybrid Polymer Composite With and effect in hardness of nanoclay/epoxy Without Reinforcing of Fly Ash Particles composites authors observed that hardness authors observed that glass fiber had less of composites increase with increase in bonding nature than jute fiber jute outer nanoclay up to a optimum level and then layer behaves as brittle because it shows decreasing, this was due to the cluster size maximum erosion at 900. After addition of of nano clays reaches a crucial limit and the fly ash composite behavior was same and reinforcing function of clay decrease with itshows maximum at 600 which indicate increase in nano clay in composite. semi brittle behavior of composite. Bibin John et. al. [12] worked on the effect METHODOLOGY AND EXPERIMENTAL of low density reinforcement on mechanical PROCEDURE properties of syntactic foam of made of cynateester.The authors used two types of Materials glass micro balloons having grade of K25 Epoxy resin (Araldite LY556) and hardener and K37 and performed different testing. (HY951) supply by Herenba Instruments & From the study the authors concluded that Engineers Chennai, India was used as a the tensile strength of the syntactic foam matrix material and curing agent were decreased by increasing volume respectively. Araldite (LY556) was highly fraction but the syntactic foam with K 37 viscous; having density and viscosity of shows high tensile strength than the K 25 1.15g/cc and 10000-12000 mPa-s except at higher volume percent. This is the respectively. Hardener (HY951) was low evidence of higher resin to micro balloon viscous having density 0.98g/cc was used bonding in K 37. On increasing volume for room temperature curing. The resin to fraction of the glass microspheres, hardener ratio used was 10:1. interfacial bonding between matrix and filler (viz., glass microspheres) decreases and Reinforcement results in decrease in tensile strength. The reinforcement is used in this project UlkuYilmazeret.al. [16] studied on tensile, waste thermoplastic. Which is banned in flexural and impact properties of a some states because it is not destroy easily. thermoplastic matrix reinforced by glass 185 ELK ASIA PACIFIC JOURNAL OF MECHANICAL ENGINEERING AND RESEARCH- SPECIAL ISSUE ISSN 2349-9368(Online);EAPJMER/ISSN.2454-2962/2016; National Conference on Futuristics in Mechanical Engineering Madan Mohan Malaviya University of Technology This is major problem of pollution and rises were cut according to the dimension of the very dangerous disease. 150mm and 65mm respectively. Then these wooden bits were wrapped with plastic tape. Specimen processing A flat wooden board fixed with a transparent The present work is focused on making the plastic sheet was used to form the base of composites material by adding the the mold. The wrapped wooden bits were reinforcement and check its mechanical and fixed firmly (with the help of nails) in physical characteristics. In this project we rectangular shape as shown in figure. The used the (0 to 40%) volume percentage. First purpose of the transparent plastic sheet is to of all we make a zero percentage based prevent sticking of the mixture and ease specimen and perform mechanical removal of the specimen after room characteristic like impact test ,hardness test, temperature curing. tensile test and compressive test. The zero In this test the components are subjected to percent based specimen make without Impact (Shock) loads, these loads are adding reinforcement. In this type of applied suddenly. The stress induced in specimen only epoxy hardener are mixed these are performed to asses shock according to its calculation. After this we absorbing capacity of materials subjected to make other specimen to use the (10 to 40%) suddenly applied loads. These capabilities volume percentage of reinforcement and are expressed in form of Rapture energy, perform the above test measured value is Impact strength, & Modulus of rapture. Two compared with the zero volume percentage types of Impact test are commonly used i.e. measured value. By analysis of the above Charpy test and Izod Test. In presence work observed value we plot the graph for the only perform Charpy test. showing the behavior of composites In Charpy test, the specimen is placed as material. Stir casting method was used, in cantilever position and specimen have V- the present study, to process syntactic foams shaped notch of 450 . The notch is located on with varying volume percentage (0-40 tension side of specimen during impact volume %) of thermoplastic. Required loading. Depth of notch is generally taken as amount of resin, hardener, and t/5 to t/3 where t is thickness of specimen. thermoplastic, depending on the volume percentage of the resultant foam were RESULTS AND DISCUSSION calculated (as shown below). Impact testing Impact strength curve of the syntactic foam Preparation of Mold with different volume percentage of waste In the present study the dimension of the thermoplastic are shown below. mould used to prepare specimen for tensile In impact test the impact strength of and flexural testing is 150mm×65mm×8mm. composite material is varying according to At first wooden bits (of thickness 8.0mm) volume of waste thermoplastic. Impact 186 ELK ASIA PACIFIC JOURNAL OF MECHANICAL ENGINEERING AND RESEARCH- SPECIAL ISSUE ISSN 2349-9368(Online);EAPJMER/ISSN.2454-2962/2016; National Conference on Futuristics in Mechanical Engineering Madan Mohan Malaviya University of Technology strength of various sample is increases with Density= mass/volume increasing volume % of Reinforcement up to 1.12×10-3= mass/(x×78000) 30% and then start decreasing. Mass of matrix= 87.36x g Mass of epoxy= (90.9×87.36x)/100 Calculation for required amount of Mass of epoxy= 79.41x g casting material for different volume % Mass of hardener = (9.09×87.36)/100 of syntactic foam Mass of hardener = 7.94x g In this subsection, calculation of required Mass of filler amount constituent materials (e.g. epoxy Density of filler= mass/volume resin, hardener,
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