I-HTPB, eyaziwa nangokuthi i-hydroxyl-terminated polybutadiene, iyi-polymer ethandwa kakhulu ezimbonini ezihlukahlukene ngenxa yezakhiwo zayo eziyingqayizivele kanye nokuhlukahluka. Kulesi sihloko, sizohlola izinhlelo ezahlukene kanye nokusetshenziswa kwe-HTPB.
I-HTTPB iyirabha yokwenziwa eyenziwe nge-polymerized kusuka ku-butadiene kanye nenani elincane le-divinylbenzene. Impahla ewumphumela ibonakala nge-hydroxyl (-OH) termini yayo, edlulisela izinto eziningi ezifiselekayo ku-polymer.
Okunye okubaluleke kakhulu ukusetshenziswa kwe-HTPB kumkhakha wamarokhethi ophephela. Le polymer isetshenziswa kabanzi njengesithako esibalulekile ekukhiqizeni uphethiloli we-rocket motor. Ama-propellants asuselwa ku-HTPB anikeza izinzuzo ezimbalwa kunezinye izindlela. Lawa ma-propellants azwela kancane ekushaqekeni nasekushaqekeni, aqinisekisa ukuphepha okuthuthukisiwe ngesikhathi sokuphatha kanye nokuhamba. Ngaphezu kwalokho, babonisa izici ezinhle kakhulu zemishini, njengokunwebeka okuhle nokuguquguquka, okuvumela i-propellant ukuthi imelane nokucindezela okuphezulu nokusheshisa ngesikhathi somlilo. Ngaphezu kwalokho, ama-propellants asekelwe ku-HTPB anomfutho othize ophakeme kakhulu, osiza ukufeza ukuhlohla okukhulu nokusebenza kahle ekuqhutshweni kwe-rocket.
Ngaphezu kwezicelo ze-aerospace, i-HTPB isetshenziselwa ukwenza izinhlobonhlobo zama-elastomer nama-sealant. Ngenxa yokumelana kwayo okuhle kakhulu namakhemikhali, i-HTPB ivame ukusetshenziswa njenge-binder ekukhiqizeni izinto zokunamathisela nezingubo. Ikhono layo lokunamathela ezinhlobonhlobo zama-substrates likwenza kube ukukhetha kokuqala kwezinhlelo zokusebenza ezidinga ukubopha okuqinile. Ukwengeza, ama-sealant asekelwe ku-HTPB angasetshenziselwa ukuvala uphawu emoyeni nasemanzini ezimbonini ezifana nezokwakha kanye nezimoto. Lawa ma-sealants aziwa ngokuqina kwawo kanye nokumelana namazinga okushisa aphezulu kanye nezimo zemvelo ezinzima.
Enye indawo laphoI-HTTPB idlala indima ebalulekile ekukhiqizeni imikhiqizo yegwebu eguquguqukayo. Le polymer isetshenziselwa ukwenza amagwebu asetshenziswa ezimbonini ezahlukahlukene, kufaka phakathi ezezimoto, i-aerospace kanye ne-insulation. Amagwebu asekelwe ku-HTPB anezakhiwo ezinhle kakhulu zokugoba futhi alungele ukusetshenziswa komatilasi, amakhushini ezihlalo nezinto ezibamba ukushaqeka. Ukuguquguquka kwe-HTPB kuvumela ukukhiqizwa kwamagwebu okuminyana okuhlukahlukene nokuqina ukuze kuhlangatshezwane nezidingo ezahlukene zohlelo.
Imboni yezokuvikela nayo iyazuza ekusebenziseni i-HTPB ekukhiqizeni iziqhumane.I-HTTPB iziqhumane zisetshenziswa kuma-missile warheads, amagobolondo ezikhali nokunye okuhlukahlukene. Lezi ziqhumane zinezinto ezifiselekayo ezifana nokukhipha amandla aphezulu, ukuzinza nokungezwani nomthelela, okuzenza zifanelekele ukusetshenziswa kwezempi.
Ngaphezu kwalokho, i-HTPB isetshenziswa ekwakhiweni kwezingubo ezikhethekile namapende. Lezi zimbobo zisetshenziswa kakhulu ezimbonini lapho ukuvikela ekonakalini nasekuchayekeni kwemvelo kubaluleke kakhulu, njengezimboni zikawoyela negesi, zasolwandle nezezimoto. Ukumelana ngokwemvelo kwe-HTPB namakhemikhali nezimo ezinzima kuqinisekisa ukuthi ukunamathela kunikeza isivikelo esihlala isikhathi eside, esithembekile.
Kafushane, i-HTPB iyi-polymer eguquguqukayo engasetshenziswa ezinhlobonhlobo zezimboni. Kusukela kuma-rocket propellants kuya kuma-sealants, amagwebu, iziqhumane nama-coatings, izakhiwo eziyingqayizivele ze-HTPB ziyenza ibe ukukhetha okuhle kakhulu kwezinhlelo zokusebenza ezihlukahlukene. Njengoba ubuchwepheshe buqhubeka nokuthuthuka, isidingo se-HTPB kulindeleke ukuthi siqhubeke nokukhula futhi kuzovela izicelo ezintsha zale polymer emangalisayo.
Isikhathi sokuthumela: Nov-01-2023