Accession Number : AD0452948

Title :   ELASTOMERIC INSULATION FOR SOLID PROPELLANT ROCKET MOTORS,

Corporate Author : ROCK ISLAND ARSENAL IL

Personal Author(s) : Sale, D. H.

Report Date : 27 OCT 1964

Pagination or Media Count : 24

Abstract : The development of flexible, elastomeric-based, solid propellant rocket motor case insulation is discussed. The effect on insulation properties of type of asbestos, of liquid versus sold elastomers and of methods of dispersing fibrous compounding ingredients, is reported. Oxyacetylene torch and static motor firing test data for some of the better insulation materials developed, and for some commercial materials, are presented. A material with 40% elongation, 1.34 gm/cc density, performance index of 95 sq. cm sec/gm and erosion rate of 2.0 mils/sec was the most promising insulation developed. The material is a 55/45 butadiene/acrylonitrile compound containing phenol furfural resin, asbestos and oxyazoline wetting agent. It was satisfactorily bonded to aluminum and to steel by conventional bonding agent. (Author)

Descriptors :   (*THERMAL INSULATION, ROCKET ENGINE CASES), (*ELASTOMERS, THERMAL INSULATION), (*ROCKET ENGINE CASES, THERMAL INSULATION), COMPOSITE MATERIALS, NITRILE RUBBER, BUTYL RUBBER, ACRYLIC RESINS, ASBESTOS, PHENOLIC PLASTICS, PLASTICIZERS, PHOSPHALTES, SURFACE ACTIVE SUBSTANCES, HETEROCYCLIC COMPOUNDS, VULCANIZATES, FIBERS, MECHANICAL PROPERTIES, DENSITY, EROSION, CAPTIVE TESTS, TORCHES, ABLATION, TEST METHODS.

Distribution Statement : APPROVED FOR PUBLIC RELEASE