SEALING COMPOSITION Russian patent published in 2005 - IPC

Abstract RU 2265637 C1

FIELD: hermetics.

SUBSTANCE: invention relates to sealing compositions providing tightness in vacuum and vacuum-autoclaving process of forming polymer composite materials for use in aircraft industry, mechanical engineering, and other national economy areas. Sealing composition, showing high gas impermeability, heat resistance, cohesion strength, adhesion to metal and polyamide film and providing tightness for polyamide film sacs in vacuum formation process at temperature up to 180°C and negative pressure up to 1 kg/cm2 and in vacuum-autoclaving process at pressure 2 kg/cm2 to achieve temperature 125°C, ageing for 30 min, and further heating to 180°C, contains butyl rubber, polyisobutylene with molecular weight 10000-25000, chalk, asbestos, mineral oil, and alkylphenol-formaldehyde resin.

EFFECT: improved performance characteristics.

2 tbl

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RU 2 265 637 C1

Authors

Savchenkova G.A.

Artamonova T.A.

Dates

2005-12-10Published

2004-03-29Filed