I-HTPB, eyaziwa ngokuba yi-hydroxyl-terminated polybutadiene, i-polymer ethandwayo kumashishini ahlukeneyo ngenxa yeempawu zayo ezizodwa kunye nokuguquguquka. Kweli nqaku, siza kuphonononga izicelo ezahlukeneyo kunye nokusetyenziswa HTPB.
HTPB yirabha eyenziweyo eyenziwe ngepolymer evela kwibutadiene kunye nexabiso elincinci le-divinylbenzene. Izinto ezibangelwayo zibonakaliswa yi-hydroxyl (-OH) yayo termini, enika ezininzi izinto ezifunwayo kwipolymer.
Enye yezona zinto zibalulekileyo zokusetyenziswa kwe-HTPB kwintsimi ye-rocket propellants. Le polymer isetyenziswa ngokubanzi njengesithako esiphambili kwimveliso yamafutha erokhethi eqinileyo. Iipropellants ezisekwe kwi-HTPB zibonelela ngeenzuzo ezininzi kunezinye iindlela. Ezi propellants azikhathaleli kangako ukothuka kunye nokothuka, ziqinisekisa ukhuseleko olwandisiweyo ngexesha lokuphatha kunye nokuthutha. Ukongezelela, babonisa iimpawu ezibalaseleyo zomatshini, ezifana ne-elasticity enhle kunye nokuguquguquka, ukuvumela i-propellant ukuba imelane noxinzelelo oluphezulu kunye nokukhawuleza ngexesha lokutsha. Ukongeza, iipropellants ezisekwe kwi-HTPB zinempembelelo ethile ephezulu, enceda ukufezekisa ukuqhubela phambili kunye nokusebenza kakuhle kwi-rocket propulsion.
Ukongeza kwizicelo ze-aerospace, i-HTPB isetyenziselwa ukwenza iindidi ze-elastomers kunye ne-sealants. Ngenxa yokumelana neekhemikhali ezigqwesileyo, i-HTPB isoloko isetyenziswa njenge-binder kwimveliso yokuncamathelisa kunye neengubo. Ukukwazi kwayo ukunamathela kwiindidi ze-substrates kwenza kube yinto yokuqala yokukhetha izicelo ezifuna ukudibanisa okuqinileyo. Ukongeza, ii-sealants ezisekelwe kwi-HTPB zingasetyenziselwa ukutywinwa komoya kunye namanzi kumashishini afana nokwakha kunye neemoto. Ezi zitywina ziyaziwa ngokuhlala kwazo kunye nokuxhathisa amaqondo obushushu agqithisileyo kunye neemeko ezinzima zokusingqongileyo.
Enye indawo aphoHTPB idlala indima ephambili kukuveliswa kweemveliso zogwebu eziguquguqukayo. Le polymer isetyenziselwa ukwenza amagwebu asetyenziswa kumashishini ahlukeneyo, kubandakanywa iimoto, i-aerospace kunye ne-insulation. Amagwebu asekwe kwi-HTPB aneempawu ezigqwesileyo zokuthoba kwaye alungele ukusetyenziswa kumatrasi, iicushion zokuhlala kunye nezinto ezifunxa ukothuka. Ukuguquguquka kwe-HTPB kuvumela ukuveliswa kwamagwebu obunzima obuhlukeneyo kunye nobunzima ukuhlangabezana neemfuno ezahlukeneyo zesicelo.
Ishishini lokukhusela likwaxhamla ekusebenziseni i-HTPB yokuveliswa kwee-agent eziqhumayo.HTPB iziqhushumbisi zisetyenziswa kwimijukujelwa yemfazwe, amaqokobhe eembumbulu kunye nezinye iintlobo ezahlukeneyo zemikhosi. Ezi ziqhushumbisi zineempawu ezinqwenelekayo ezifana nokukhutshwa kwamandla aphezulu, ukuzinza kunye nokungabi namvakalelo kwimpembelelo, ezenza zilungele izicelo zomkhosi.
Ukongezelela, i-HTPB isetyenziselwa ukuqulunqwa kweengubo ezikhethekileyo kunye neepende. Ezi zogquma zisetyenziswa kakhulu kumashishini apho ukukhuselwa kwi-corrosion kunye nokuvezwa kokusingqongileyo kubaluleke kakhulu, njenge-oyile kunye negesi, amashishini aselwandle kunye neemoto. Ukuchasana kwe-HTPB kwimichiza kunye neemeko ezinzima ziqinisekisa ukuba i-coating inika ukhuseleko oluhlala ixesha elide, oluthembekileyo.
Isishwankathelo, i-HTPB yipolymer eguquguqukayo enokusetyenziswa kuluhlu olubanzi lwamashishini. Ukusuka kwi-rocket propellants ukuya kwii-sealants, amagwebu, iziqhushumbisi kunye neengubo, iipropathi ezikhethekileyo ze-HTPB zenza ukuba ibe yinto ekhethekileyo yokuzikhethela kwiintlobo ezahlukeneyo zezicelo. Njengoko iteknoloji iqhubela phambili, imfuno ye-HTPB kulindeleke ukuba iqhubeke ikhula kwaye izicelo ezintsha zale polymer ephawulekayo ziya kuvela.
Ixesha lokuposa: Nov-01-2023