Abstract:The moisture resistance coating was fabricated on the silica fabric composite using perhydropolysilazane
and nano silica as starting materials. The structural revolution of the moisture resistance coating in the solidifying and
high temperature heating processes was studied by SEM, EDS, IR, DSC TG. It is found that the moisture absorption
percentage of the silica fabric composite at the temperature of 40 and humidity of 95% for 24 h decreased from 11.
71% to 0.31% due to the moisture resistance coating. The radio wave transmissivity of the moisture resistance coating
is close to that of the silica fabric composite due to its similar constituents to the silica fabric composite.
