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Silane polymers of diols
Author(s) -
Curry James E.,
Byrd James D.
Publication year - 1965
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1965.070090126
Subject(s) - silane , polymer science , polymer , materials science , polymer chemistry , chemical engineering , composite material , engineering
In an effort to develop new and improved polymeric materials for space application, a new series of polymers has been prepared. Some of these have shown outstanding thermal stability and good stability when exposed to ultraviolet radiation in a vacuum environment. High molecular weight polymers of the general type,have been prepared by the reaction of a silyldiamine with various organic diols. Bis‐(anilino)diphenylsilane has been reacted with such diols as hydroquinone, resorcinol, p , p ′‐biphenol, 2,7‐naphthalenediol, 2,2‐propane‐bis(4‐hydroxybenzene), 1,6‐hexanediol, and 4,4′‐dihydroxydiphenyl ether. Of these, the polymer containing the biphenyl linkage, polydiphenylsiloxybiphenyl, has the more desirable properties. Polydiphenylsiloxybiphenyl is stable to 600°C. for short periods of time. Fibers with fairly good tenacity, 0.5 g./den. may be drawn directly and continuously from the polymer melt. This polymer forms a hard protective coating on aluminum, remains stable after being heated at 500°C. for 60 min., and shows no change after 96 hr. at 270°C. (518°F.). It also forms good transparent semiflexible films and has good tensile strength as an ambient temperature adhesive.