Accession Number : AD0283974

Title :   RESEARCH AND DEVELOPMENT OF HIGH TEMPERATURE STRUCTURAL ADHESIVES

Corporate Author : WHITTAKER CORP SAN DIEGO CALIF NARMCO RESEARCH AND DEVELOPMENT DIV

Personal Author(s) : RUETMAN,SVEN H. ; LEVINE,HAROLD H. ; WRASIDLO,WOLFGANG J.

Report Date : AUG 1962

Pagination or Media Count : 44

Abstract : Physical properties and oxidation resistances of silicone-phenolic laminates, which were pyrolyzed in the presence of ammonia at 1500 F, were in ependent of the treatment. A 1200 and 1800 F THE PRESENCE OF A MONIA APPEARED TO BE DELETERIOUS. I creased heating rate during the construc ive pyrolysis improved the oxidation stability of pyrolyzed specimens, but lowered the flexural strengths and moduli. Constructive pyrolysis increased the oxidation stability of titanium tetraphenoxyl/aldehyde laminates on ''E'' glass, but failed to improve the laminates on carbon cloth. Antimony thioantimonate, Sb(III)Sb(V)S4, cured epoxy-novolac adhesive had a tensile shear strength of 315 psi after 60 minutes at 1000 F. Reaction of phenol with sulfur dichloride yielded low molecular weight polymers with expected hydroxyphenylsulfide structure. However, from the reaction of p-bromophenol with sulfur dichloride under the same conditions mostly dimer was isolated. Attempts to synthesize triphenoxy arsine failed due to the apparent hydrolytic instability of the compound. (Author)

Descriptors :   *DEGRADATION, *LAMINATES, *PHENOLIC PLASTICS, *SILICONE PLASTICS, *STABILITY, ADHESIVES, ANTIMONATES, EPOXY RESINS, HEAT RESISTANT PLASTICS, OXIDATION, PYROLYSIS, ROCKET NOZZLES, SULFUR COMPOUNDS, SYNTHESIS

Distribution Statement : APPROVED FOR PUBLIC RELEASE