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Additional recommended knowledge
This was the binder formulation widely used on the 1960-70's big boosters (e.g., Titan III and Space Shuttle SRBs). It is also sometimes used by amateurs due to simplicity, very low cost, and lower toxicity than the more common HTPB. HTPB uses isocyanates for curing, which have a relatively quick curing time; however, they are also generally toxic.
PBAN is normally cured with the addition of an epoxy resin, taking several days at elevated temperatures to cure.
PBAN will be used in future NASA missions, most notably the Constellation program, as this copolymer will be used in the first stage of the Ares I rocket in five segments.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "PBAN". A list of authors is available in Wikipedia.|