Noun
polybutadiene (countable and uncountable, plural polybutadienes)
(organic chemistry) A polymer of butadiene, used to make synthetic rubber.
Composite propellants are cast, and retain their shape after the rubber binder, such as Hydroxyl-terminated polybutadiene (HTPB), cross-links (solidifies) with the aid of a curative additive. Source: Internet
The High Test Hydrogen Peroxide H 2 O 2 86% and Hydroxyl-terminated polybutadiene (HTPB) and aluminum hybrids developed by U.S. Rockets produce a sea level delivered specific impulse (I sp ) of 240, well above the typical 180 of N 2 O-HTPB hybrids. Source: Internet
They are fueled by a mix of ammonium perchlorate (68%) and aluminum fuel (18%) and polybutadiene (14%). Source: Internet