CAS 69102-90-5 HTPB Hydroxyl-terminated polibutadiene HTPB no ka propellant, nā mea hoʻopili, nā mea hoʻopaʻa, nā uhi

He polymer ʻūlū mamao wai ka HTPB, ʻo ia ka laholio wai hou. ʻOkoʻa nā waiwai no ka mea he hui ʻana ka HTPB ma mua o kahi hui maʻemaʻe, a ua hana ʻia e hoʻokō i nā koi kikoʻī o nā mea kūʻai aku. ʻO kahi HTPB maʻamau ʻo R-45M me kēlā me kēia hopena o ke kaulahao i hoʻopau ʻia me kahi hui hydroxyl [OH]. PS: hiki iā mākou ke hana i kekahi mana o HTPB e like me ke noi a nā mea kūʻai aku, a hoʻolālā hou i ka HTPB me kahi kaulahao hoʻokahi o hydroxyl -OH, I kēia manawa, hiki iā mākou ke hana i ka hydrogenation o ka HTPB)

ʻO ia a me ke kaulahao hoʻolōʻihi mea hana, ka mea hoʻopili crosslinking i ka mahana o ka lumi a i ʻole ka hopena wela kiʻekiʻe e hiki ke hoʻoulu i ka ʻōnaehana pūnaewele 3D o ka hoʻōla ʻana i ka ʻike. Loaʻa i ka ʻike hoʻōla nā waiwai mechanical maikaʻi loa, ʻoi aku ka maikaʻi o ke kūpaʻa ʻana i ka hydrolysis, ka waikawa a me ka alkali, ke kūpaʻa ʻana i ke kapa, ke kūpaʻa haʻahaʻa haʻahaʻa a me ka insulation uila maikaʻi loa.

Hiki ke hana ʻia nā polyurethanes i hoʻomākaukau ʻia mai HTPB no nā waiwai kino kikoʻī; hiki i nā polyurethanes ke elastic loa a paʻakikī a paʻa. ʻO kekahi mau huahana: nā panela insulation foam paʻa; nā huila elastomeric paʻa a me nā kaila (hoʻohana ʻia no nā roller coasters, escalators, skateboards, etc.); nā bushings suspension automotive; nā hui potting uila; nā mea hoʻopili hana kiʻekiʻe; nā uhi ʻili a me nā mea hoʻopaʻa ʻili; nā olonā synthetic (e laʻa, Spandex); kāpeti underlay; nā ʻāpana paʻakikī-plastic (e laʻa, no nā mea uila).

ʻO kahi hoʻohana koʻikoʻi o HTPB i loko o ka propellant rocket paʻa. Hoʻopaʻa ia i ka mea hoʻomake oxidizing, ka wahie a me nā mea ʻē aʻe i loko o kahi nui paʻa akā elastic i ka hapa nui o nā ʻōnaehana propellant composite. Hana ka polyurethane i hoʻōla ʻia ma ke ʻano he wahie i loko o ia mau hui ʻana. No ka laʻana, ʻo ka propellant e like me "HTPB/AP/Al=12/68/20", ʻo ia hoʻi, i hoʻohālikelike ʻia e ke kaumaha, HTPB me ka curative 12% (mea hoʻopaʻa a me ka wahie), ammonium perchlorate 68% (oxidizer), a me ka pauka alumini 20% (wahie).

Hoʻohana ʻia nā mea hoʻoneʻe like, i kapa pinepine ʻia ʻo APCP (ammonium perchlorate composite propellant) i nā rockets hoʻohālike nui. Hoʻopuka kahi APCP maʻamau i 2-3 mau manawa o ka impulse kikoʻī o ka propellant pauka ʻeleʻele i hoʻohana ʻia i ka hapa nui o nā motika rocket liʻiliʻi.

Hoʻohana ʻia hoʻi ka HTPB ma ke ʻano he wahie rocket hybrid.

Eia nā ʻano hana o HTPB:

1. ʻAʻohe pilikia o ka wai

2. Nā hui hyroxyl reactive

3. Haʻahaʻa ka mahana hoʻololi aniani

4. Waihoʻoluʻu haʻahaʻa - wai mānoanoa kiʻekiʻe

5. Ke kū'ē i ka hydrolysis

6. Ke kū'ē ʻana i ka mahana haʻahaʻa

7. Ka permeability haʻahaʻa

8. Ke kū'ē i nā waikawa a me nā kumu wai

9. Ke kūpaʻa ikaika i ka ʻaʻahu

10. Hoʻopili maikaʻi loa i nā ʻano substrates like ʻole

11. Nā waiwai hoʻokaʻawale uila