For improving heat鄄obstructive effect and avoiding brittleness from increasing phenolic resin, a novel
reformative method was thought out and carried into execution. A kind of pyrolysis fiber showed the similar decomposi鄄
tion characteristics as phenolic resin. A typical sample was produced according to the modified principle and tested.
Arc heated wind tunnel experimental results indicated that the back temperature of 20 mm new composite was lower a鄄
bout 40益than high silicon/ phenolic under the same test condition (The highest surface temperature was 1 300益and
the total heating time was 600 s). The new composite showed excellent heat鄄obstructive effect and the results were
consistent with the original objective. The novel reformative method was perspective on improving the heat鄄obstructive
effect