Composite propellants are heterogeneous mixtures of fuels and small particulate oxidizers, held together by a highly viscous binder.
Composite propellants are typically used as solid propellant for rocket systems, kick motors for satellites and booster motors for launching cruise missiles.
|Propellant Ingredient (click for spec sheet)||Function||Specification|
|Aluminum Powder||Fuel||MIL-A-82728 (OS)|
NH4ClO4; available in 90, 200 and 400 micron particle size (customizable)
Mixed with a binder compound and fuels such as powdered Aluminum, Ammonium Perchlorate can generate self-sustained combustion at much below atmospheric pressure, making it an ideal propellant for rockets and missiles.
|Carboxyl Terminated Polybutadiene Linear (CTPB) |
CTPB, a form of synthetic rubber, is one of the best synthetic rubbers used as a binder for composite propellants.
|Binder (synthetic)||MIL-PRF-23942A (AS)|
|Catocene (2,2-Bis-Ethylferrocenyl Propane)||Catalyst (iron-based; >1 inch/sec burn rate)|
|Di-(2-Ethylhexyl) Adipate (DEHA)||Plasticizer||DOD-D-23443B|
|Dimeryl Diisocyanate (DDI)|
Dimeryl Diisocyanate (DDI-1510) is the preferred curative in low- molecular weight HTPB polymer rocket propellant formulations. This high-molecular weight isocyanate is based on a 36-carbon aliphatic backbone possessing low toxicity and low water sensitivity. Also functions as a burn rate catalyst.
|Curing agent||MIL-C-85498 (AS) Type I
|Dioctyl Sebacate (DOS)||Plasticizer||CAS: 122-62-3|
|Hydroxyl Terminated Polybutadiene (HTPB) |
HTPB is an excellent binder for solid rocket fuels, providing a solid but elastic fuel mass. It is also used as a hybrid rocket fuel in conjunction with Nitrous Oxide (N2O).
HTPB R-45M is the highest-grade binder for military applications, providing low-temperature flexibility, excellent adhesion to metal and excellent dispersion of fillers.
|Isodecyl Pelargonate||Plasticizer||AS 2328|
|Isophorone Diisocyanate (IPDI)||Curing agent||MIL-C-85498 (AS) Type II
|Isophthaloyl bis(2-methylaziridine) (DIB-752)||Binder|
|Neutral polymeric bonding agent (NPBA)||Binder|
|Polybutadiene Acrylonitrile (PBAN)||Binder|
|Triphenyl Bismuth||Cure catalyst, bonding and accelerating agent||MIL-T-82825
|1,1'-Isophthaloyl Bis[2-Methylaziridine||Bonding agent for Ammonium Perchlorate in polybutadiene matrices (752)|
|MAPO (tris[1-(2-methyl) aziridinyl] phosphine oxide)||Curing agent for CTPB pre-polymers and a bonding agent for HTPB pre-polymers.||DOD-T-82666A|
|Neutral Polymeric Bonding Agents (NPBA)||Bonding agent for composite rocket propellants|
|TEPAN (Tetra-ethylenepentamine acrylnitrile)||Bonding agent|
|TEPANOL (Tetra-ethylenepentamine acrylnitrile glycidol)||Liquid bonding agent and curative (878)||MIL-T-82824|
|Trimesol-1(2 ethyl) aziridine||Trifunctional aziridine amide curing agent (868)|