1. Uhlolojikelele
Ngokuthuthuka okusheshayo kobuchwepheshe bolwazi nokuxhumana, izintambo ezibonakalayo, njengenkampani ewumgogodla wokudluliselwa kolwazi lwesimanje, zinezidingo eziphakeme kakhulu zokusebenza kanye nekhwalithi.I-Polybutylene terephthalate (PBT), njengepulasitiki yobunjiniyela be-thermoplastic esebenza kahle kakhulu, idlala indima ebalulekile ekwenziweni kwezintambo ezibonakalayo. I-PBT yakhiwe yi-polymerization ye-condensation ye-dimethyl terephthalate (DMT) noma i-terephthalic acid (TPA) ne-butanediol ngemva kwe-esterification. Ingenye yezinhlanu zepulasitiki zobunjiniyela bezinjongo ezijwayelekile futhi yaqala yasungulwa yi-GE futhi yenziwa ngezimboni ngeminyaka yawo-1970. Nakuba iqale sekwephuzile, ithuthuke ngokushesha okukhulu. Ngenxa yokusebenza kwayo okuhle kakhulu okubanzi, ukucutshungulwa okuqinile nokusebenza kwezindleko eziphakeme, isetshenziswa kakhulu ezintweni zikagesi, izimoto, ezokuxhumana, izinto zikagesi zasendlini neminye imikhakha. Ikakhulukazi ekukhiqizeni izintambo ezibonakalayo, isetshenziswa kakhulu ekukhiqizeni amashubhu optical fibre loose futhi iwuhlobo oludingekayo lwempahla yekhebula esebenza kahle ezintweni ezingavuthiwe zezintambo ezibonakalayo.
I-PBT iyi-milky white semi-transparent to opaque semi-crystalline polyester enokumelana nokushisa okuhle kakhulu kanye nokuzinza kokucubungula. Ukwakheka kwayo kwamangqamuzana yi-[(CH₂)₄OOCC₆H₄COO]n. Uma kuqhathaniswa ne-PET, inamaqembu amabili e-methylene ngaphezulu ezingxenyeni zamaketanga, enikeza iketango layo eliyinhloko lamangqamuzana isakhiwo se-helical kanye nokuguquguquka okungcono. I-PBT ayimelani nama-asidi aqinile nama-alkali aqinile, kodwa ingamelana nezinyibilikisi eziningi eziphilayo futhi izobola emazingeni okushisa aphezulu. Ngenxa yezakhiwo zayo ezinhle kakhulu zomzimba, ukuzinza kwamakhemikhali nokusebenza kokucubungula, i-PBT isibe yinto ekahle yesakhiwo embonini yekhebula le-optical futhi isetshenziswa kabanzi emikhiqizweni ehlukahlukene ye-PBT yezintambo zokuxhumana kanye nezintambo ezibonakalayo.
2. Izici ze-PBT Materials
I-PBT ivamise ukusetshenziswa ngendlela yezingxube eziguquliwe. Ngokungeza ama-retardants amalangabi, ama-ejenti aqinisayo nezinye izindlela zokuguqula, ukumelana nokushisa kwawo, ukufakwa kukagesi nokuvumelana nezimo kungathuthukiswa. I-PBT inamandla aphezulu emishini, ukuqina okuhle nokumelana nokugqokwa, futhi ingavikela ngempumelelo imicu yokubona ngaphakathi kwekhebula lokukhanya ekulimaleni kokucindezeleka komshini. Njengenye yezinto zokusetshenziswa ezivamile zamakhebuli okubona, i-PBT resin iqinisekisa ukuthi imikhiqizo yekhebula yokubona inokuguquguquka okuhle nokuzinza ngenkathi igcina amandla esakhiwo.
Phakathi naleso sikhathi, inokuqina kwamakhemikhali okuqinile futhi ingamelana nemidiya ehlukahlukene ebolayo, iqinisekisa ukusebenza okuzinzile kwesikhathi eside kwezintambo ezibonakalayo ezindaweni eziyinkimbinkimbi ezifana nomswakama nesifutho sikasawoti. Izinto ze-PBT zinokuzinza okuhle kakhulu kwe-thermal futhi zingakwazi ukugcina ukusebenza okuzinzile ngisho nasezindaweni ezishisa kakhulu, zikwenze zifaneleke ukusetshenziswa kwekhebula le-optical ezindaweni ezihlukene zokushisa. Inokusebenza okuhle kakhulu kokucubungula futhi ingakhiwa nge-extrusion, ukubunjwa komjovo nezinye izindlela. Ilungele ukuhlangana kwekhebula le-optical lomumo nezakhiwo ezahlukene futhi iyipulasitiki yobunjiniyela esebenza kahle kakhulu esetshenziswa kabanzi ekwenzeni izintambo.
3. Ukusetshenziswa kwe-PBT kuzintambo ze-Optical
Enqubweni yokukhiqiza ikhebula le-optical, i-PBT isetshenziswa kakhulu ekukhiqizeni amashubhu axegayoimicu ye-optical. Amandla ayo aphezulu kanye nokuqina kungasekela ngokuphumelelayo futhi kuvikele imicu ye-optical, ukuvimbela umonakalo obangelwa izici ezibonakalayo ezifana nokugoba nokwelula. Ngaphezu kwalokho, impahla ye-PBT inokumelana nokushisa okuhle kakhulu nokusebenza kokuguga, okusiza ukuthuthukisa ukuzinza nokuthembeka kwezintambo ze-optical ngesikhathi sokusebenza isikhathi eside. Ingenye yezinto ezijwayelekile ze-PBT ezisetshenziswa kuzintambo ezibonakalayo okwamanje.
I-PBT iphinde isetshenziswe njenge-sheath yangaphandle yezintambo ezibonakalayo. I-sheath ayidingi nje kuphela ukuba namandla athile emishini ukuze ibhekane nezinguquko endaweni yangaphandle, kodwa futhi idinga ukuba nokumelana okuhle kakhulu kokugqokwa, ukumelana nokugqwala kwamakhemikhali kanye nokumelana nokuguga kwe-UV ukuze kuqinisekiswe impilo yesevisi yekhebula le-optical ngesikhathi sokubeka ngaphandle, ezindaweni ezinomswakama noma zaseLwandle. I-optical cable sheath inezidingo eziphezulu zokusebenza kokucubungula nokuvumelana nezimo zemvelo ze-PBT, futhi i-PBT resin ibonisa ukuhambisana okuhle kwesicelo.
Kuzinhlelo ezihlangene zekhebula elikhanyayo, i-PBT ingasetshenziswa futhi ukwenza izingxenye ezibalulekile ezifana namabhokisi ahlangene. Lezi zingxenye zidinga ukuhlangabezana nezidingo eziqinile zokuvalwa, ukuvimbela amanzi kanye nokumelana nesimo sezulu. Impahla ye-PBT, enezici zayo ezinhle kakhulu ezibonakalayo kanye nokuzinza kwesakhiwo, iyisinqumo esifanele kakhulu futhi idlala indima ebalulekile yokusekelwa kwesakhiwo ohlelweni lwempahla eluhlaza yekhebula.
4. Ukucubungula Izinyathelo Zokuqapha
Ngaphambi kokucubungula ukubumba komjovo, i-PBT idinga ukomiswa ku-110℃ kuya ku-120℃ cishe amahora angu-3 ukuze kukhishwe umswakama okhangisiwe futhi kugwenywe ukwakheka kwamabhamuza noma ukonakala ngesikhathi sokucutshungulwa. Izinga lokushisa lokubumba kufanele lilawulwe phakathi kuka-250 ℃ no-270 ℃, futhi izinga lokushisa lesikhunta linconywa ukuba ligcinwe ku-50 ℃ kuya ku-75 ℃. Ngenxa yokuthi izinga lokushisa lokushintsha kwengilazi le-PBT lingu-22℃ kuphela futhi izinga lokupholisa lekristalu liyashesha, isikhathi sayo sokupholisa sifushane. Phakathi nenqubo yokubumba umjovo, kuyadingeka ukuvimbela izinga lokushisa lombhobho ukuthi lingabi phansi kakhulu, okungase kubangele ukuthi isiteshi sokugeleza sivinjwe. Uma izinga lokushisa lomgqomo lingaphezu kuka-275℃ noma into encibilikisiwe ihlala isikhathi eside, ingase ibangele ukuwohloka kokushisa kanye nokufiphala.
Kunconywa ukusebenzisa isango elikhudlwana lomjovo. Isistimu yomgijimi oshisayo akufanele isetshenziswe. Isikhunta kufanele sigcine umphumela omuhle wokuqeda. Izinto ze-PBT sprue eziqukethe izinto ezibuyisela amalangabi noma i-glass fibre reinforcement akunconywa ukuthi ziphinde zisetshenziswe ukugwema ukuwohloka kokusebenza. Lapho umshini uvaliwe, umgqomo kufanele uhlanzwe ngesikhathi nge-PE noma PP impahla ukuvimbela i-carbonization yezinto ezisele. Le mingcele yokucubungula inokubaluleka okusebenzayo okuyisiqondiso kubakhiqizi bezinto ezingavuthiwe zekhebula ekukhiqizweni kwempahla yekhebula enkulu.
5. Izinzuzo Zohlelo Lokusebenza
Ukusetshenziswa kwe-PBT kuzintambo ezibonakalayo kuye kwathuthukisa kakhulu ukusebenza okuphelele kwezintambo ezibonakalayo. Amandla ayo aphezulu kanye nokuqina kuthuthukisa ukumelana nomthelela kanye nokumelana nokukhathala kwentambo yokubona, futhi andise impilo yayo yesevisi. Ngaleso sikhathi, ukucutshungulwa okuhle kakhulu kwezinto ze-PBT kuthuthukise ukusebenza kahle kokukhiqiza kanye nezindleko zokukhiqiza ezincishisiwe. I-anti-aging and chemical corrosion resistance resistance ivumela ukuthi igcine ukusebenza okuzinzile isikhathi eside ezindaweni ezinokhahlo, kuthuthukisa kakhulu ukwethembeka nokugcinwa komjikelezo womkhiqizo.
Njengesigaba esibalulekile ezintweni ezingavuthiwe zezintambo ezibonakalayo, i-PBT resin idlala indima kuzixhumanisi eziningi zesakhiwo futhi ingenye yepulasitiki yobunjiniyela be-thermoplastic abakhiqizi bezintambo ezibonakalayo abazibeka kuqala lapho bekhetha izinto zekhebula.
6. Iziphetho namathemba
I-PBT isiphenduke into ebalulekile ebalulekile emkhakheni wokukhiqiza amakhebula optical ngenxa yokusebenza kwayo okuvelele ezicini zemishini, ukuzinza okushisayo, ukumelana nokugqwala kanye nokucutshungulwa. Ngokuzayo, njengoba imboni yezokuxhumana nge-optical iqhubeka nokuthuthuka, izidingo eziphakeme zizobekwa phambili ekusebenzeni kwezinto ezibonakalayo. Imboni ye-PBT kufanele iqhubeke ikhuthaza ukuqanjwa kabusha kwezobuchwepheshe kanye nokuthuthukiswa kokuvikelwa kwemvelo okuluhlaza, iphinde ithuthukise ukusebenza kwayo okuphelele nokusebenza kahle kokukhiqiza. Ngenkathi kuhlangatshezwana nezidingo zokusebenza, ukunciphisa ukusetshenziswa kwamandla nezindleko zempahla kuzosiza i-PBT idlale indima ebaluleke kakhulu kuzintambo ezibonakalayo kanye nohlu olubanzi lwezinkambu zohlelo lokusebenza.
Isikhathi sokuthumela: Jun-30-2025