75:
71:, and it is manufactured to meet customers' specific requirements. A typical HTPB is R-45HTLO. This product consists of oligomeric units typically containing 40–50 butadiene molecules bonded together, with each end of the chain terminated with a hydroxyl group:
107:
Polyurethanes prepared from HTPB can be engineered for specific physical properties; polyurethanes may be highly elastic or tough and rigid. Some products include: rigid foam insulation panels; durable elastomeric wheels and tires (used for
85:
of 2.4-2.6, which means that there is (approximately) one additional hydroxyl group located along the chain for every two oligomeric units. This provides side-to-side linkage for a stronger cured product. HTPB is usually cured by an
156:, fuel and other ingredients into a solid but elastic mass in most composite propellant systems. The cured polyurethane acts as a fuel in such mixtures. For example, HTPB is used in all 3/4 stages of the Japanese
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HTPB is a translucent liquid with a color similar to wax paper and a viscosity similar to corn syrup. The properties vary because HTPB is a
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describes the propellant as "HTPB/AP/Al=12/68/20", which means, proportioned by mass, HTPB plus curative 12% (binder and fuel),
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183:) are used in larger model rockets. A typical APCP produces 2–3 times the
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underlay; hard-plastic parts (e.g., for electronic instruments).
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206:, or "laughing gas") as the oxidizer, it is used to power the
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273:(8th ed.). Hoboken, N.J: Wiley. pp. 595–599.
251:
http://www.crayvalley.com/docs/TDS/poly-bd-r-45htlo.pdf
124:; electrical potting compounds; high-performance
330:
179:Similar propellants, often referred to as APCP (
191:propellant used in most smaller rocket motors.
268:
222:oxidizer, but that plan was altered in 2017.
269:Sutton, George Paul; Biblarz, Oscar (2010).
160:launch vehicles and in 1/3 stages of Indian
325:description of synthesis and other details.
181:ammonium perchlorate composite propellant
128:; surface coatings and surface sealants;
148:An important application of HTPB is in
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14:
331:
143:
24:
73:
25:
360:
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210:hybrid rocket motor developed by
31:Hydroxyl-terminated polybutadiene
214:. The land speed record attempt
120:, etc.); automotive suspension
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262:
244:
45:terminated at each end with a
13:
1:
237:
218:was to have used HTPB with a
295:"SpaceDev Hybrid Propulsion"
7:
232:Polybutadiene acrylonitrile
225:
10:
365:
297:. SpaceDev. Archived from
271:Rocket propulsion elements
194:HTPB is also used as a
150:solid rocket propellant
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78:
77:
172:68% (oxidizer), and
170:ammonium perchlorate
103:Materials production
176:powder 20% (fuel).
67:rather than a pure
256:2016-02-16 at the
220:high-test peroxide
79:
323:US Patent 5159123
280:978-0-470-08024-5
144:Rocket propellant
90:with di- or poly-
88:addition reaction
52:. It reacts with
27:Chemical compound
16:(Redirected from
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344:Organic polymers
310:
309:
307:
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291:
285:
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185:specific impulse
164:launch vehicle.
130:synthetic fibers
50:functional group
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258:Wayback Machine
249:
245:
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154:oxidizing agent
152:. It binds the
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110:roller coasters
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100:
81:R-45HTLO has a
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23:
22:
15:
12:
11:
5:
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317:External links
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216:Bloodhound SSC
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301:on 2007-11-05
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204:nitrous oxide
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196:hybrid rocket
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83:functionality
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36:
32:
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349:Rocket fuels
303:. Retrieved
299:the original
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270:
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208:SpaceShipTwo
198:fuel. With N
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189:black powder
178:
147:
106:
80:
62:
58:polyurethane
34:
30:
29:
118:skateboards
94:compounds.
54:isocyanates
333:Categories
305:2008-07-24
238:References
114:escalators
92:isocyanate
60:polymers.
126:adhesives
43:butadiene
254:Archived
226:See also
212:SpaceDev
174:aluminum
122:bushings
69:compound
56:to form
47:hydroxyl
39:oligomer
37:) is an
339:Polyols
187:of the
134:Spandex
132:(e.g.,
65:mixture
277:
138:carpet
275:ISBN
166:JAXA
162:PSLV
98:Uses
35:HTPB
18:HTPB
202:O (
158:M-5
136:);
41:of
335::
116:,
112:,
308:.
283:.
200:2
33:(
20:)
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