Accession Number : AD0286464

Title :   Research and Development of High-Temperature-Stable Inorganic Resins and Elastomers.

Corporate Author : AEROJET-GENERAL CORP AZUSA CALIF

Personal Author(s) : FELTZIN,J.

Report Date : AUG 1962

Pagination or Media Count : 1

Abstract : The preparation of thermally stable, flexible and elastic silicates was investigated. The study included attempts to modify the natural silicates, asbestos and mica, and the synthesis of silicate polymers from simpler starting materials. Several methods for the extraction of metal ions from the matrix of asbestos and mica were investigated. X-ray data show that asbestos was at least partially degraded by the sublimation treatment with NaCl. Complete solubilization of asbestos in dilute HCl was achieved. Reactions of partially degraded asbestos were accomplished with B and zr compounds, resulting in the introduction of these elements into the silicate matrix. Modification of the polymer derived from the reaction f a silicate with an organohalosilane was investigated. The object of the investigation was to increase the molecular weight of the polymer and to incorporate phenyl groups into the polymer structure. Increases in molecular weight were achieved by the use of methyltrichlorosilane and methylvinyldichlorosilane a crosslinking agents; preliminary evaluation of higher molecular wt samples did not indicate any unusual improvement of properties. (Author)

Descriptors :   *HEAT RESISTANT PLASTICS, *POLYMERS, *SILICON COMPOUNDS, ASBESTOS, CHLORIDES, COPOLYMERIZATION, DECOMPOSITION, ELASTOMERS, HALIDES, INORGANIC COMPOUNDS, MECHANICAL PROPERTIES, METHYL RADICALS, MICA, MOLECULAR WEIGHT, PHENYL RADICALS, PLASTICS, POLYMERIZATION, SILANES, SILICATES, SOLUTIONS(MIXTURES), STABILITY

Distribution Statement : APPROVED FOR PUBLIC RELEASE