CAS 69102-90-5 HTPB Hydroxyl-terminated polybutadiene HTPB ya propellant, zomatira, zomatira, ndi zokutira

HTPB ndi polima yamadzimadzi yochokera kutali, rabara yatsopano yamadzimadzi. Kapangidwe kake kamasiyana chifukwa HTPB ndi chisakanizo osati chopangidwa mwangwiro, ndipo chimapangidwa kuti chikwaniritse zofunikira za makasitomala. HTPB yachizolowezi ndi R-45M ndipo malekezero onse a unyolo amathetsedwa ndi gulu la hydroxyl [OH]. PS: tikhoza kuchita mtundu uliwonse wa HTPB monga momwe makasitomala amafunira, ndipo timapanga HTPB yatsopano ndi unyolo umodzi wa hydroxyl -OH, Pakadali pano, tikhoza kuchita hydrogenation ya HTPB)

Chogwiriziracho ndi chogwirizira cha unyolo, chogwirizira cholumikizira kutentha kwa chipinda kapena kutentha kwambiri chingapangitse kapangidwe ka netiweki ya 3D ya zomwe zimachiritsa. Zomwe zimachiritsa zimakhala ndi mphamvu zabwino kwambiri zamakanika, makamaka kukana bwino hydrolysis, kukana asidi ndi alkali, kukana kukalamba, kukana kutentha kochepa komanso kutchinjiriza bwino kwamagetsi.

Ma polyurethane opangidwa kuchokera ku HTPB amatha kupangidwa kuti agwirizane ndi zinthu zinazake zakuthupi; ma polyurethane amatha kukhala otanuka kwambiri kapena olimba komanso olimba. Zina mwazinthuzi ndi monga: mapanelo olimba oteteza thovu; mawilo olimba a elastomeric ndi matayala (ogwiritsidwa ntchito pa ma roller coasters, escalators, skateboards, ndi zina zotero); ma bushings a magalimoto oimikapo magalimoto; mankhwala opangira mapoto amagetsi; zomatira zogwira ntchito kwambiri; zokutira pamwamba ndi zomatira pamwamba; ulusi wopangidwa (monga, Spandex); pansi pa kapeti; zida zolimba zapulasitiki (monga, pazida zamagetsi).

Kugwiritsa ntchito kwakukulu kwa HTPB kuli mu rocket propellant yolimba. Imalumikiza oxidizing agent, mafuta ndi zosakaniza zina kukhala cholimba koma chotanuka m'makina ambiri ophatikizana ophatikizana. Polyurethane yokonzedwa imagwira ntchito ngati mafuta mu zosakaniza zotere. Mwachitsanzo, propellant monga "HTPB/AP/Al=12/68/20", zomwe zikutanthauza, pogawa ndi kulemera, HTPB kuphatikiza 12% yochiritsa (binder ndi mafuta), ammonium perchlorate 68% (oxidizer), ndi aluminiyamu ufa 20% (mafuta).

Ma propellant ofanana, omwe nthawi zambiri amatchedwa APCP (ammonium perchlorate composite propellant) amagwiritsidwa ntchito mu ma rocket akuluakulu. APCP yachizolowezi imapanga mphamvu yowonjezereka nthawi 2-3 kuposa mphamvu yeniyeni ya propellant wakuda yomwe imagwiritsidwa ntchito mu ma rocket motors ang'onoang'ono ambiri.

HTPB imagwiritsidwanso ntchito ngati mafuta a roketi osakanizidwa.

Makhalidwe a HTPB ndi awa:

1. Kuopa Madzi

2. Magulu a hyroxyl okhudzidwa

3. Kutentha kochepa kwa kusintha kwa galasi

4. Mtundu wotsika - madzi okhuthala omveka bwino

5. Kukana hydrolysis

6. Kukana kutentha kochepa

7. Kuchepa kwa chinyezi

8. Kukana ma asidi amadzi ndi maziko

9. Kukana kuvala mwamphamvu

10. Kumamatira bwino kwambiri ku mitundu yosiyanasiyana ya zinthu

11. Katundu wotetezera magetsi