William "Chops" Westfield <westfw <at> mac.com> writes:

> Some of the rocket people are looking at sodium silicate ("Water glass")
> plus talc, which is described as an adhesive that can retain strength at
> red-heat.  Other types of "furnace cement" might also be appropriate.

Hmm, talcum is hydrated magnesium silicate. It will likely not lose the water
when used to set windings at 150C but what happens in a rocket nozzle ?

http://www.reade.com/Products/Minerals-and-Ores/Talc-Powder-(3MgO*4SiO2*H2O).html

ZnO could be another filler that can be tried.

Anyway bakelite lacquer hardens to bakelite and that will withstand 300C. Frit
glass powder will fuse at 350-380 deg. C and become ... glass.

Peter P.


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