Low density thermoplastic elastomeric insulation for rocket moto

Details Low density thermoplastic elastomeric insulation for rocket moto Low density thermoplastic elastomeric insulation for rocket moto

1993-05-18

1996-03-12

Hoke, Veronica P.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

523179, 524 80, 524178, 524184, 524415, 524416, 524606, C08K 552, C08K 53477, C08K 332, C08K 302

Patent

active

054986494

ABSTRACT:
Thermoplastic elastomeric ablative insulation having low density are disclosed. The ablative insulation is based upon a thermoplastic elastomeric polymer resin containing a polyamide polymer and a maleic anhydride modified EPDM polymer. The ratio of polyamide polymer to maleic anhydride modified EPDM is in the range from about 20:80 to about 40:60. Carefully selected fillers provide suitable charring and ablative insulation performance without unduly increasing the insulation density. Typical fillers include an phosphorus containing compound, such as ammonium polyphosphate, a polyhydric alcohol present, such as pentaerythritol, silicone resin, chopped fibers, an antioxidant, a butadiene polymer, and a peroxide.

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