Synthesis and characterization of poly(tetramethyldisiloxane-ethynylenephenyleneethynylene) resins
作者： Fei Gao , Lingling Zhang , Lemin Tang , Farong Huang , Lei Du
DOI: 10.1007/S10965-010-9403-7
关键词:
摘要: Poly(tetramethyldisiloxaneethynylenephenyleneethynylene) resins were synthesized by polycondensation reactions of the bismagnesium derivative p- or m-diethynylbenzene with 1,3-dichlorotetramethyldisiloxane. The molecular weights determined gel permeation chromatography. structures verified 1H, 13C, and 29Si NMR as well FT-IR spectroscopy. thermal behavior was traced differential scanning calorimetry (DSC). can be thermally crosslinked through acetylene groups to produce highly which stable up 539 °C in both nitrogen air. Hard, black, glassy ceramics obtained after sinter at 1,450 °C. polymers have a potential application matrix materials for advanced composites ceramic precursors.
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