• Sukhjinder Singh Sandhu
• Ramandeep Singh

Natural fibers are potentially a high-performance and non-abrasive reinforcing fibres source. Coir fibers are a byproduct derived from coconut fruit. Coir fibers are an agricultural waste extracted from the outer shell of coconut fruit and are abundantly available in southern India. In this study, mechanical properties of short coir fiber reinforced polypropylene composites fabricated by compression and injection molding process are examined. These were chopped to a length of 2-5 mm. The effect of fiber loading on the tensile and flexural properties of compression molded composites is evaluated and results indicate that there is no significant improvement with the addition of fibers from 3 to 15%. Whereas, injection molded specimens (PP/(15) Coir) have shown 58.75% and 25.82% increase in tensile and flexural strength respectively, compared to neat PP. The tensile and flexural modulus of injection molded composites also increased by 47.42% and 58.84% respectively as compared to neat PP. Hence, the tensile and flexural properties of the developed composites clearly indicate towards injection molding as a better fabrication process for short fiber reinforced composites compared to compression molding.

Sphere; Tangential Stress; Creep; Pressure Ratio

"Comparative Analysis of Polymer Matrix Composites processed by Injection and Compression Molding", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 6, page no.790-810, June-2018, Available :http://www.jetir.org/papers/JETIR1806497.pdf

"Comparative Analysis of Polymer Matrix Composites processed by Injection and Compression Molding", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 6, page no. pp790-810, June-2018, Available at : http://www.jetir.org/papers/JETIR1806497.pdf