초록 ▼

Non-asbestos elastomeric insulating materials for rocket motors are disclosed. The insulating materials are low in density (between about 0.035 and 0.050 lb./cubic inch) and comprise 100 parts by weight of a crosslinked elastomer polymer in which are dispersed between about 10 and 100 (preferably 15

Non-asbestos elastomeric insulating materials for rocket motors are disclosed. The insulating materials are low in density (between about 0.035 and 0.050 lb./cubic inch) and comprise 100 parts by weight of a crosslinked elastomer polymer in which are dispersed between about 10 and 100 (preferably 15-75) parts by weight of a char forming organic fiber selected from polyaramide pulps and between about 5 and 75 parts by weight inorganic particulate. The insulating materials issue little smoke, have notable erosion resistance and can be tailored to have thermal, mechanical and other properties of desired character. Ingredients such as phenolics, flame retardants, and liquid polybutadiene can enhance the utility of the insulating materials in certain embodiments.

대표청구항 ▼

An elastomeric insulating material for use in rocket motors as low smoke case wall or blast tube ramp insulation, said elastomeric insulating material having a density between about 0.035 and 0.045 and consisting essentially of: 100 parts by weight of peroxy crosslinked EPDM in which are dispersed b

An elastomeric insulating material for use in rocket motors as low smoke case wall or blast tube ramp insulation, said elastomeric insulating material having a density between about 0.035 and 0.045 and consisting essentially of: 100 parts by weight of peroxy crosslinked EPDM in which are dispersed between about 10 and 100 parts by weight of a char forming organic fiber comprising polyaramide pulp and between about 5 and 75 parts by weight of inorganic particulate.