Fire Retardant Laminates Test of Epoxy Resin and Polyester Resin Applied on Busbodies

Composites are the most important materials in transportation and automotive sector. In the present work the composites were prepared by bus body building method known as hand layup technique. Using this technique the polymers namely epoxy resin and polyester resin were applied separately on chopped strand matt powdered type glass fibers and compared. Sandwich laminate panels were prepared and investigated the fire retardant laminates test. The burning time and burning distance were found to be higher in fire retardant laminates test for polyester resin compared to epoxy resin. The elimination of resin accessories such as gel coat, pva, wax, accelerator in epoxy resin, improved in proportion and percentage of epoxy resin with hardener as (90:10) and 70%,glass fiber consumption of 30%,and at last the standard fixed ratio of 1:1.50:2 for 450:300:225 category of three different combined stack grades of chopped strand matt powdered type glass fiber were the only reasons for decreased rate of burning time and burning distance of epoxy resin in these observations.