Ukulungiswa kwe-UHMWPE fiber

I-UHMWPE, eyaziwa nangokuthi i-high-high-modulus polyethylene, okwamanje ingenye yezinto ezisebenza kahle kakhulu emhlabeni.Ngenxa yezakhiwo zayo ezinhle kakhulu ezinjengokumelana nokugqwala, ukumelana nokugqoka kanye nokuminyana okuphansi, okwamanje isetshenziswa ezintweni zokuvikela ezempi, izinto zemishini yezempi, amathuluzi asemkhathini kanye neminye imikhakha yezempi.

I-UHMWPE, eyaziwa nangokuthi i-high-high-modulus polyethylene, okwamanje ingenye yezinto ezisebenza kahle kakhulu emhlabeni.Ngenxa yezakhiwo zayo ezinhle kakhulu ezinjengokumelana nokugqwala, ukumelana nokugqwala kanye nokuminyana okuphansi, okwamanje isetshenziswa ezintweni zokuvikela ezempi, izinto zemishini yezempi, izinto zokusebenza zasemkhathini kanye neminye imikhakha yezempi.Ukuthuthukiswa kwe-fiber esebenza kahle kuyisisekelo semishini yezempi yezwe, futhi izinto ezithuthukisiwe zingaholela kubuchwepheshe bezempi obuthuthukisiwe, obube yisisekelo esibalulekile sokwakhiwa kwezwe lesimanje elinamandla, futhi lithatha isikhundla esinqumayo umkhakha wezinto zempi emhlabeni wonke.

1. Izakhiwo ze-UHMWPE fiber

Ifayibha ye-UHMWPE inezici ezinhle kakhulu ezihlanganisayo, ukuminyana kwayo okuhlobene kuncane, ingantanta emanzini.FuthiUHMWPE fiberiwumucu oqinile emhlabeni njengamanje.Uma kuqhathaniswa nensimbi, i-UHMWPE fiber iqine izikhathi ezingaphezu kweziyishumi kunensimbi yezinga eliphezulu.Ngaphezu kwalokho, i-UHMWPE fiber nayo inokumelana nokugqwala okuqinile, ukumelana namakhemikhali, ukumelana nokugqoka nezinye izakhiwo, ukusebenza okuphelele, i-UHMWPE fiber emikhakheni eminingi ebalulekile e-China idlala indima ebalulekile.

1.1 Izakhiwo ezinhle kakhulu zemishini

Uma kuqhathaniswa namanye amafayibha asebenza kahle kakhulu, i-UHMWPE fibre density ingeyesibili kuphela ku-PE fibre evamile kanye ne-polypropylene fiber, futhi iyi-optimal fiber material enomthamo omncane kakhulu phakathi kwezinto ezingangenwa izinhlamvu.Inganciphisa isisindo sento futhi izuze umphumela ongasindi ngenkathi iqinisekisa ukusebenza okungcono kokuvikela inhlamvu.

Uma kuqhathaniswa nezinye izakhiwo, amandla okuqina e-UHMWPE angokwesibili kuphela kulawo e-PBO ne-polyaryl ester fiber, futhi ahluke ngo-0.1 kuphela ku-polyaryl ester fiber.Kuyabonakala ukuthi i-UHMWPE inamandla amakhulu okuqina.

Uma kuqhathaniswa neminye imicu, i-modulus yokuqala ingeyesibili kuphela ku-PBO kanye ne-carbon fiber, okubonisa ukuthi i-fiber inokumelana okuhle ngokuqhathaniswa nokulimaza ukungezwani futhi ayithambekele ekuguqukeni.Iwuhlobo lwefayibha eyisici enamandla akhethekile aphezulu kanye nemodulus ethize, edlala indima ebalulekile ezintweni ezingangenwa izinhlamvu.

1.2 Ukusebenza kokufakwa kukagesi

I-UHMWPE i-fiber reflectance radar wave phenomenon imbalwa kakhulu, enokuqhuba kahle okuphezulu, ithuthukisa ukungaguquguquki kwe-dielectric yezinto eziyinhlanganisela.Nakuba i-dielectric engaguquki kanye ne-value yokulahlekelwa kwe-polyethylene iyingcosana phakathi kwezinye izinto, i-UHMWPE fiber inokusebenza okungenakufinyelelwa yi-polyethylene fiber yendabuko, futhi inomphumela ongcono kunempahla evamile, ngakho-ke iyinto ekhethwayo ye-radome ye-radome, izinga eliphezulu nomphumela wokukhanya.

1. 3 Ukumelana nesimo sezulu nokungagugi

Ifayibha ye-UHMWPE inokumelana nesimo sezulu esihle kakhulu futhi ingagcina ukusebenza okuphezulu kwasekuqaleni kungashintshile ngemva kwesikhathi eside sokukhanya kanye nemvelo enokhahlo.Ngesikhathi esifanayo, i-UHMWPE fiber inokumelana nokugqokwa okuphezulu kanye nokumelana nokukhathala okugobayo kune-aramid fiber ezintweni zokusebenza eziphezulu, ngakho ukumelana nokugqokwa kwale fibre kungcono kuneminye imicu yokusebenza ephezulu.Ngenxa yokumelana nokugqoka okuphezulu nokusebenza okulula kokucubungula, inethuba elihle lokufaka isicelo emkhakheni wezimboni.

1. 4 Ukumelana nokugqwala kwamakhemikhali

Isakhiwo sangaphakathi se-UHMWPE fiber siqinile.Kungenxa yokuthi i-crystallinity ephezulu kanye nokuma kwe-molecular chain ngaphakathi kwefayibha ukuthi i-fiber ine-inertia yamakhemikhali enamandla.Ngakho-ke, ngaphansi kwesimo se-asidi nesisekelo noma isimo sokushisa esiphezulu nesiphansi, i-fiber ingagcina ukusebenza kwayo kwasekuqaleni ingashintshile isikhathi eside, futhi isajwayela futhi idlale inani layo endaweni enzima.

1. 5 Izakhiwo zokuzigcoba

Impahla ye-UHMWPE uma iqhathaniswa nezinye izinto zobunjiniyela, impahla ye-UHMWPE inesici esiphansi kakhulu sokungqubuzana, into ephansi yokungqubuzana yenza i-fiber ngokwayo isebenze kangcono ngokuzigcoba, iyimpahla engcono kakhulu ezintweni zepulasitiki ngaphansi kwesimo sokungabi naso okokugcoba, ngakho-ke impahla ye-UHMWPE isetshenziswa kabanzi. kwezobunjiniyela, ngevelu yokusetshenziswa ephezulu kakhulu.I-fiber ye-UHMWPE isetshenziswa ekusebenzeni komshini, uma kuqhathaniswa nensimbi yendabuko kanye nethusi ngaphansi kokusebenza kwe-lubricant kungcono.Ngakho-ke, uma kuqhathaniswa nezinto ezijwayelekile, i-UHMWPE fiber ayigcini nje ngokusindisa izindleko zempahla eluhlaza, kodwa futhi iqinisekisa umphumela omuhle kakhulu wokusebenza, ngakho-ke inenani eliphezulu lokusetshenziswa.

2. Indlela yokulungiselela ye-UHMWPE fiber

2.1 Indlela yokuphotha ijeli

Kunezindlela eziningi zokulungisa i-fiber ye-UHMWPE yokusebenza okuphezulu, kodwa ngenxa yesizathu sokuncibilika ngokwayo, ukulungiswa kwe-UHMWPE fiber akukwazi ukufezwa.Ukuphotha i-gel kuyindlela ephumelela kakhulu.Indlela yokuphotha ye-gel ihlukile kunesixazululo esijwayelekile sokuphotha noma ukuphotha okumanzi, ngokuvamile kusetshenziswa ama-polymers anesisindo samangqamuzana aphezulu njengempahla eluhlaza, eyenziwe ngesisombululo se-semi-dilute njenge-spinning dope, isisombululo se-molecule ye-flexible chain to tangles kusixazululo se-semi-dilute, bese iphotha, i-crystallization, high tensile stretch chain, emva kokwelashwa kokukhipha izikhathi zokwelula okushisayo, okwenziwa ngamandla aphezulu kanye nemicu ephezulu ye-modulus.Indlela yokuphotha ijeli inezici eziyisisekelo ezilandelayo: (1) i-polymer yesisindo semolekyuli ephezulu kakhulu isetshenziswa njengempahla eluhlaza;(2) sebenzisa isixazululo se-semi-dilute njengesitokwe sokuphotha;(3) ukwelulwa kwe-hyperthermal kwenziwa, futhi isilinganiso se-tensile sasingaphezu kwama-30.

2.2 Indlela yokuphotha ye-Plasticizing

I-Melt spinning yenziwe nge-polymer melt ngokuncibilika kokuphotha nokukhipha.Ukuphotha kwepulasitiki okuncibilika kusekelwe ekuncibilikeni kokuncibilika, okwengeza inani elifanele le-diluent ku-polymer encibilikayo ukuze iphothwe, ngokusebenzisa isihluzi esixutshwe ngamawele esikulufu, bese siyakhishwa, sicwiliswe ku-ejenti yokukhipha, bese ukwelula okuphindaphindiwe ekugcineni kungathola amandla aphezulu. kanye ne-modulus polyethylene fiber ephezulu.

2.3 Indlela ye-extrusion yesimo esiqinile enengcindezi ephezulu

Umgomo wokwakhiwa kwe-extrusion ukuthi i-solvent eqinile ye-granular yengezwa ku-extruder, umgqomo wezinto ezibonakalayo oqukethe i-solvent eqinile ushiswa ekushiseni okuncibilikayo, ukuze izinto eziqinile zincibilike, i-ejenti encibilikisiwe ihanjiswe ekhanda lomshini nge ukuma okungaguquki, bese kuthi ngemva kokupholisa nokubumba, umkhiqizo wokugcina uqina.Ingcindezi ephezulu eqinile ye-extrusion indlela isekelwe ku-extrusion eyenza ukuncibilika kwengcindezi ephezulu, ukwakha i-solvent, bese kuba ngembobo ye-jet, bese kuba nokushuba okuphezulu, futhi ekugcineni uthole i-polyethylene ephezulu yamangqamuzana.

2.4 Indlela yokwenza ikristalu ebusweni

Ngenxa yokukhula kancane kwezinga le-fibrous crystal, le ndlela ayivamisile ukusetshenziswa ekulungiseni i-UHMWPE fiber.

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