product detail
HTPB / Hydroxyl-terminated polybutadiene CAS: 69102-90-5 Product details: Chemical Name: Hydroxyl-terminated polybutadiene Code: HTPB, HTPB-R45M CAS: 69102-90-5 Character: China Authorized Exporter / HTPB export licence Standard: GB (Civil Grade) / GJB (Military Grade/ GJB 1327A-2003) HTPB is a liquid remote claw polymer, the new liquid rubber. The properties vary because HTPB is a mixture rather than a pure compound, and it is manufactured to meet customers' specific requirements. A typical HTPB is R-45M with each end of the chain terminated with a hydroxyl [OH] group. ( PS: we can do any versions of HTPB as customers request, and new design the HTPB with a single chain of hydroxyl -OH, Meanwhile, we can do hydrogenation of the HTPB) It and chain extension agent, crosslinking agent in room temperature or high temperature reaction can generate 3D network structure of curing content.The curing content has excellent mechanical properties, especially good resistance to hydrolysis, acid and alkali resistant, wear resistance, low temperature resistance and excellent electrical insulation. 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 roller coasters, escalators, skateboards, etc.); automotive suspension bushings; electrical potting compounds; high-performance adhesives; surface coatings and surface sealants; synthetic fibers (e.g., Spandex); carpet underlay; hard-plastic parts (e.g., for electronic instruments). An important application of HTPB is in solid rocket propellant. It binds the oxidizing agent, 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 the propellant as "HTPB/AP/Al=12/68/20", which means, proportioned by mass, HTPB plus curative 12% (binder and fuel), ammonium perchlorate 68% (oxidizer), and aluminum powder 20% (fuel). Similar propellants, often referred to as APCP (ammonium perchlorate composite propellant) are used in larger model rockets. A typical APCP produces 2–3 times the specific impulse of the black powder propellant used in most smaller rocket motors. HTPB is also used as a hybrid rocket fuel. The performance properties of HTPB as follow: 1. Hydrophobicity 2. Reactive hyroxyl groups 3. Low glass transition temperature 4. Low color - high clarity viscous liquid 5. Resistance to hydrolysis 6. Low temperature resistance 7. Low moisture permeability 8. Resistance to aqueous acids and bases 9. Strong wear resistance 10. Excellent adhesion to a variety of substrates 11. Electrical insulative properties HTPB can be used in : - Coatings - Adhesives - Propellant - Polyurethane(PU) elastomers - Binders - Sealants - Electrical insulation materials - Rubber products - Structural materials in car and planes - Building materials (waterproof, anti-corrosion, heat insulation) - Potting and encapsulation - Polymer Modification - and so many other kinds of usage. Packing: Packed in 50kg/drum, 170kg/drum, The storage period is 1 year. Safety instructions: Storage should be at cool, dry and ventilate. The best condition is among -20 ~ 38℃. Shelf life of 12 months, if expire, still used if up to standard through retest. When transportation should avoid rain, sunlight. Don’t mix with strong oxidizer. ITEM GRADE I GRADE II GRADE III GRADE IV GRADE V GRADE VI Appearance achromatous or light yellow, no visible impurities Hydroxyl value,（mmol/g） 0.47-0.53 0.54-0.64 0.65-0.70 0.71-0.80 0.81-1.00 1.00-1.40 Viscosity(40℃ Pa.s）≤ 9.5 8.5 4.0 3.5 5.0 3.0 Peroxide mass fraction, % 0.04 0.04 0.05 0.05 0.10 0.10 Moisture,wt% ≤ 0.05 0.05 0.05 0.05 0.10 0.10 Volatile Content,% ≤ 0.5 0.5 0.65 0.65 1.0 1.0 Molecular weight 3800-4600 3300-4100 3000-3600 2700-3300 2300-3000 1600-2400 * In addition：We can research and develop the new HTPB according to the special demand of our clients． 1. Single Hydroxyl Group HTPB/Monohydroxy liquid polybutadiene 2. Hydrogenated HTPB 3. EHTPB / Epoxidized hydroxyl-terminated polybutadien 4. CTPB / Carboxyl-terminated polybutadiene CAS 586976-24-1 5. ATPB / Amino-terminated polybutadiene 6. HTBS / HTPB-styrene copolymer 7. HTBN / Hydroxy-terminated liquid nitrile butadiene rubber 8. ATBN / Amino-terminated liquid nitrile butadiene rubber 9. MLPB / maleic polybutadiene 10. CTBN / Carboxylated- terminated liquid acrylonitrile rubber 11. Pure MDI 99.5% CAS 101-68-8 12. IPDI(Isophorone Diisocyanate) 13. DDI(Dimeryl Diisocyanate) 14. AP(Ammonium perchlorate) 15. NDI(1,5-Naphthalene Diisocyanate) CAS 3173-72-6 16. MAPO Tris-1-(2-Methylaziridinyl)Phosphine Oxide CAS 57-39-6 17. TMXDI (Tetramethylxylylene Diisocyanate ) 18. TMI(1-(1-Isocyanato-1-methylethyl)-3-isopropenylbenzene) 19. Desmodur RE 20. RFE 21. Desmodur RC/ TDI-Bases Polyisoyanurate（RC） 22. RN 23. Trans-CHDI (Trans-1,4-cyclohexane diisocyanate) 24. Boron Nitride(BN 99%) 25. Triphenyl Bismuth CAS 603-33-8 26. Nitrogen Atomized Spherical Al Powder/ aluminite powder 27. 8-methylnonyl nonan-1-oate(Isodecyl Pelargonate) CAS 109-32-0 28. Ferrocene Cas 102-54-5 29. MOCA / 4,4′-Methylenebis(2-Chloroaniline) CAS 101-14-4 30. www.theoremchem.com