Accession Number : AD0667831

Title :   PRINCIPAL REPRESENTATIVES OF CARBORANESILOXANE POLYMERS AND THEIR PROPERTIES.

Descriptive Note : Technical rept.,

Corporate Author : OLIN MATHIESON CHEMICAL CORP NEW HAVEN CONN CHEMICALS GROUP

Personal Author(s) : Schroeder,Hansjuergen A.

Report Date : APR 1968

Pagination or Media Count : 22

Abstract : Two members of the poly-m-carboranesiloxane family were selected for extensive testing to determine their ppotential in high temperature applications between 500 and 900 F. Efforts were concentrated on an insoluble raw gum which lends itself primarily to molding operations; its synthesis was developed into a routine operation. Volatile loss determinations, long term heat-aging studies, compression set tests, shrinkage and electrical property measurements were conducted on variably compounded vulcanizates. Their tensile strength and elongation could be improved by increased filled loading in conjunction with modified molding techniques. End use items such as O-rings and other seals, diaphragms and electrical connector inserts are now undergoing application testing. For coatings and related uses, a soluble viscous liquid form is best suited and can be easily applied on metals or fabrics from aromatic solvents. Curing does not require peroxides and is achieved between 300 and 600 F. (Author)

Descriptors :   (*BORANES, *ELASTOMERS), (*SILOXANES, ELASTOMERS), HEAT RESISTANT MATERIALS, SYNTHESIS(CHEMISTRY), VAPORIZATION, AGING(MATERIALS), COMPRESSIVE PROPERTIES, SHRINKAGE, ELECTRICAL PROPERTIES, TENSILE PROPERTIES, ELONGATION, ADDITIVES, MOLDINGS, O RINGS, DIAPHRAGMS(MECHANICS), ELECTRIC CONNECTORS, ORGANIC COATINGS

Subject Categories : Elastomers and Rubber

Distribution Statement : APPROVED FOR PUBLIC RELEASE