ROTATIONAL MOULDING OF FLAME RETARD ANT LINEAR LOW DENSITY POLYETHYLENE (FR- LLDPE) COMPOUNDS

摘要

Flame retardant polyethylene compounds fabricated from rotational moulding technique are finding widespread applications for Industrial app.lications,stadium seats, children's toys in parks etc. In the present work, the objective was to assess rotational moulding characteristics of flame retardant -LLDPE. The end application identified for the purpose was a hollow box for packaging of explosive materials. The material currently used is wood. With increasing pressure to conserve natural resources, the present work acquires significance and provides impetus in that direction. Compounds were designed to meet V0, V1, and V2 Flammability rating as per UL 94 test protocol. FR-LLDPE compounds were prepared on Berstoff ZE-25 twin-screw extruder. Mechanical properties are determined on the injection moulded ASTM test specimens and cut specimens from rotational moulded boxes. The flammability test on rotational moulded hollow containers has been captured in a compact disk.