Polymers polyborosilazane

Aluminum nitride polymer Hybrid co-polymers Polyborosilazanes Polycarboxilane modified with At... 

Keywords Hydroboration of Vinylchlorosilanes / Preceramic Polymers / Polyborosilazane / Thermal Stability / Synthesis... 

Chu and co-workers [41] carried out pyrolysis of the refractory polymer polyborosilazane under nitrogen at temperatures between 1250 and 1800 °C. The boron content of the pyrolysis product increased with increased thermal exposure... 

UBE Chemicals synthesized amorphous Si-Ti-C-O fibers from the PCS-titanium alkoxide compound polymer. These so called Tyranno fibers show excellent properties and can be spun thinner than the Nicalon fibers (see Table 4). However heating above 1000°C results in a crystallization of the fiber. In the mid 1990s the German company Bayer AG synthesized an amorphous Si-B-N-C fiber, by pyrolysis of a polyborosilazane polymer [56]. This SiBN3C fiber (see Fig. 11) has a tensile strength of 3 GPa and maintains its amorphous character up to 1800°C. The advantage of the production route from liquid to solid to produce SiC has also attracted attention for... 

Perhydropolysilazane + B(OME)3 polyborosilazane(PBSZ). Composition is for polymer after being heated at 500 °C. 

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