Abstract
The performance of filled polymers is generally determined on the basis of the interface attraction of filler and polymers. Particulate filled polymer composites are becoming attractive because of their wide applications and low cost. In this study the effects of flyash with three varying particle size and filler concentrations (viz. 5 to 40 weight %) on the mechanical, thermal, electrical, rheological and morphological properties of polyester thermoplastic elastomer (Hytrel®) was investigated. Composites of polyester thermoplastic elastomer with varying concentrations of flyash were prepared by twin screw extrusion. Mechanical properties such as flexural strength and modulus increases with filler loading, where as tensile strength is found to be decrease with increase in flyash loading. Dielectric strength of composites also increases with flyash loading. Morphological studies revealed that there is good dispersion of filler in the polymer matrix. Thermal properties were found to be improved with flyash addition. Further, it was observed that the mechanical (flexural), thermal as well as electrical properties of composites improved with decrease in particle size of filler.
Highlights
Fillers are used along with various commodity as well as engineering polymers to improve the properties [1] and reduce the cost
In this investigation we studied the effect of flyash with three varying particle sizes and concentration on properties Hytrel®
There is a significant increment in the flexural strength and modulus with an increase in the filler concentration
Summary
Fillers are used along with various commodity as well as engineering polymers to improve the properties [1] and reduce the cost. Incorporating inorganic mineral fillers into plastic resin improves various physical properties of the materials such as mechanical strength, modulus etc. In order to improve thermal, mechanical and electrical properties of polyester thermoplastic elastomer, particulate fillers such as aluminatrihydrate, montmorillonite, clays, talc, mica, silica, flyash, wollastonite, kaolin etc are incorporated [6]. Flyash provides cost effective improvements in the critical properties for a wide range of polymer composites. Polyester thermoplastic elastomer composites are mainly used in a wide variety of automotive parts such as gears and sprockets [3]. It is used in high strength industrial hoses and tubing [14, 15] and in vibration damping applications.
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