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This product consists of oligomeric units typically containing 40–50 butadiene molecules bonded together, with each end of the chain terminated with a hydroxyl [OH] group: R-45HTLO has a functionality of 2.4-2.6, which means that there is (approximately) one additional hydroxyl group located along the chain for every two oligomeric units ...
Polyalcadiene diols: Hydroxyl-terminated polybutadiene (PBHT)... Other examples of telechelic polymers are the halato-telechelic polymers or halatopolymers. [4] The end-groups of these polymers are ionic or ionizable like carboxylate or quaternary ammonium groups.
Nitrous oxide / Hydroxyl-terminated polybutadiene The Scaled Composites Model 339 SpaceShipTwo ( SS2 ) was an air-launched suborbital spaceplane type designed for space tourism . It was manufactured by The Spaceship Company , a California -based company owned by Virgin Galactic .
RocketMotorTwo is a hybrid rocket engine utilizing solid hydroxyl-terminated polybutadiene (HTPB) fuel and liquid nitrous oxide oxidizer – sometimes referred to as an N 2 O/HTPB motor [8] [9] – providing 70,000 pounds-force (310 kN) of thrust. [10] The design makes use of lessons learned during the development of the SpaceShipOne hybrid ...
Polybutadiene [butadiene rubber, BR] is a synthetic rubber. It offers high elasticity, high resistance to wear, good strength even without fillers, and excellent abrasion resistance when filled and vulcanized. "Polybutadiene" is a collective name for homopolymers formed from the polymerization of the monomer 1,3-butadiene.
Rubbers like Estane or hydroxyl-terminated polybutadiene (HTPB) are used for these applications extensively. Silicone rubbers and thermoplastic polyurethanes are also in use. [4] Fluoroelastomers, e.g. Viton, combine the advantages of both.
Hydroxyl-terminated polybutadiene (HTPB), used together with aluminium and ammonium nitrate in composite rocket fuels as a fuel and binder; Carboxyl-terminated polybutadiene (CTPB), used in composite rocket fuels as a fuel and binder; PBAN, used together with aluminium and ammonium nitrate in composite rocket fuels as a fuel and binder
This mixture is typically 69-70% finely ground ammonium perchlorate (an oxidizer), combined with 16-20% fine aluminium powder (a fuel), held together in a base of 11-14% polybutadiene acrylonitrile (PBAN) or Hydroxyl-terminated polybutadiene (polybutadiene rubber fuel). The mixture is formed as a thickened liquid and then cast into the correct ...