| abstract |
The invention relates to a method of manufacturing a propellant nozzle based on a phenolic resin having good properties of thermal stability and charcoal, the process comprising: - the formation of a fibrous preform impregnated with a pre phenolic resin -polymerized product obtained from a monoaromatic aldehyde compound having the following formula: where n1 is an integer between 1 and 3, n2 is an integer between 0 and 5 and, when n2 is greater than or equal to 2, substituents R are identical or different, R being chosen from: - COOH, the -O-Alk groups where Alk denotes an alkyl chain of 1 to 4 carbon atoms, the hydrocarbon chains comprising between 1 and 20 carbon atoms, and - the baking the impregnated fibrous preform so as to crosslink the prepolymerized phenolic resin. |