Elastomeric insulating composition for a solid propellant rocket motor

Non-asbestos elastomeric insulating materials for solid propellant rocket motors are disclosed. The insulating materials are composed of EPDM rubber, polyaramide fiber, liquid EPDM rubber, magnesium hydroxide or aluminum hydroxide, silicon dioxide, chlorinated flame retardant compound and zinc hydro...

Full description

Saved in:
Bibliographic Details
Main Author Fan, Jun-Ling
Format Patent
LanguageEnglish
Published 18.11.2004
Online AccessGet full text

Cover

More Information
Summary:Non-asbestos elastomeric insulating materials for solid propellant rocket motors are disclosed. The insulating materials are composed of EPDM rubber, polyaramide fiber, liquid EPDM rubber, magnesium hydroxide or aluminum hydroxide, silicon dioxide, chlorinated flame retardant compound and zinc hydroxystannate. The char forming organic fiber is used to substitute asbestos in traditional insulating materials that are believed to cause serious environmental problems. These fillers in the formulation, which when combined, have a synergistic effect that reduces the ablation rate significantly. Also, use of zinc hydroxystannate to substitute Sb 2 O 3 , may further reduce density of the insulator and smoke density and smoke toxicity of exhausted gas from the rocket motor.