Thermal Behaviour of Hybrid Composites Reinforced with Natural Fibers and Kevlar
P.A. Thakare1, N. Kumar2, V.B. Ugale3 

1Pravin Thakare, Suresh Gyan Vihar, Jaipur, India.
2Neeraj Kumar, Professor, Department of Mechanical Engineering, Suresh Gyan Vihar University, Jaipur, India.
3Vinay Ugale, Assistant Prof, Department of Mechanical Engineering, College of Military Engineering, Pune, India.

Manuscript received on 13 March 2019 | Revised Manuscript received on 19 March 2019 | Manuscript published on 30 July 2019 | PP: 5616-5621 | Volume-8 Issue-2, July 2019 | Retrieval Number: B3768078219/19©BEIESP | DOI: 10.35940/ijrte.B3768.078219
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Abstract: There is a wide scope to develop suitable hybrid combination for making Fiber Reinforced Polymer (FRP) to utilize the properties of both natural and synthetic fibers. Economic and environmental reasons justify the use of natural fiber in place of synthetic fiber composite. Thermal stability is one of the important properties for the FRP panel in the applications such as structural panels/roof panels, cold storage and air-conditioned ducts of building. The aim of this paper is to investigate thermal properties of hybrid FRP made of Jute, Flax, Sisal and Hemp in combination with kevlar-29. Composite wall conductivity measurement, DSC/TGA technique are used to study thermal conductivity, thermal stability, change in specific heat capacity, thermal degradation. All the panels showed lower thermal conductivity of less than 1 W/m 0C; however the flax and hemp panels had lowest thermal conductivity of around 0.45 W/m0C. DSC thermographs indicated broad exotherm and major changes in specific heat capacity at 200 0C for all panels. In addition, TGA technique showed main weight loss around 30%-51% of panels around 210 0C. Thus the thermal properties of all panels were stable till 200 0C. Thermogravimetric analysis of F- FRP shows thermal stability at lower range of temperature while in H- FRP thermal degradation occurs in two steps around 260 0C and 410 0C with the wt. loss of 53.72% and 26.79% respectively.
Index Terms: Hybrid Composite, Natural fibers, Thermal Conductivity, Specific Heat Capacity, DSC, TGA
Scope of the Article: Thermal Engineering