Accession Number:

AD0274393

Title:

ROCKET LINER PROGRAM

Descriptive Note:

Corporate Author:

HUGHES AIRCRAFT CO CULVER CITY CALIF

Personal Author(s):

Report Date:

1962-01-01

Pagination or Media Count:

1.0

Abstract:

INVESTIGATION OF MEANS OF CURING METALLOXANE POLYMERS RESULTED IN THE FINDING THAT VINYLCONTAINING COPOLYMERS CAN BE EFFECTIVELY CURED WITH SILICONE HYDRIDES. Free radical catalysts, such as organic peroxides, were effective with vinyl-containing copolymers and neither free radical catalysts nor silicone hydrides effect cures with stannosiloxanes not containing vinyl groups. Candidate vinyl-containing stannosiloxane gums and blends of these copolymers with nitrile rubbers and phenolic resins were compounded with appropriate fillers and cured with a silicon hydride. These compositions were molded into test slabs and evaluated for insulative capability by the standard torch test. The results of these tests, in terms of insulation index and erosion rate, showed that cured stannosiloxanes were substantially superior to methylsilicone rubbers and significantly better than methylphenylsilicone rubbers. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE