DEVELOPMENT OF NEW NATURAL BASED RUBBER COMPOUND, ITS CALENDERED RUBBER SHEETS OF THICKNESS 1MM TO 3MM AND EVALUATION PROCESS FOR AIRCRAFT APPLICATION.

摘要

New natural based Rubber compound HAL(NK)-NR-3311 and its calendared rubber sheets of thicknesses 1 mm to 3 mm is meant for manufacturing of rubber parts such as packing, washer, rubber covers of aircraft. Specification has been formulated for evaluation of developed Rubber compound and its sheets. Rubber compound has been evaluated including testing like tensile strength, elongation at break, residual elongation at break, hardness, shrinkage, brittleness, flex cracking, specific gravity, end use functional requirement. After successful evaluation as per requirement at various testing agencies, airworthiness authorities of DRDO (Defense Research & Development Organization),GOI had issued approval for use of Rubber compound and various sheet thickness for aircraft use.