1. Kakaretso
Ka nts'etsopele e potlakileng ea theknoloji ea tlhahisoleseling le puisano, lithapo tsa optical, joalo ka mojari oa mantlha oa phetiso ea tlhahisoleseling ea sejoale-joale, li na le litlhoko tse phahameng tsa ts'ebetso le boleng.Polybutylene terephthalate (PBT), joalo ka polasetiki ea boenjiniere ea thermoplastic e nang le ts'ebetso e phethahetseng e felletseng, e phetha karolo ea bohlokoa tlhahisong ea likhoele tsa optical. PBT e thehoa ke condensation polymerization ea dimethyl terephthalate (DMT) kapa terephthalic acid (TPA) le butanediol ka mor'a esterification. Ke e 'ngoe ea lipolasetiki tsa boenjiniere tsa merero e mehlano' me qalong e ile ea ntlafatsoa ke GE 'me ea etsoa indasteri ka bo-1970. Le hoja e qalile e se e le morao haholo, e tsoetse pele ka potlako e khōlō. Ka lebaka la ts'ebetso ea eona e phethahetseng e felletseng, ts'ebetso e matla le ts'ebetso ea theko e phahameng, e sebelisoa haholo lisebelisoa tsa motlakase, likoloi, likhokahano, lisebelisoa tsa lapeng le masimo a mang. Haholo-holo ha ho etsoa lithapo tsa optical, e sebelisoa haholo ha ho etsoa li-tubes tsa optical fibre loose tubes, 'me ke mofuta oa bohlokoahali oa lisebelisoa tsa cable tse sebetsang hantle linthong tse tala tsa likhoele tsa optical.
PBT ke "milky white" e pepeneneng ho ea ho opaque semi-crystalline polyester e hanyetsanang le mocheso le botsitso ba ts'ebetso. Sebopeho sa eona sa molek'hule ke [(CH₂)₄OOCC₆H₄COO]n. Ha e bapisoa le PET, e na le lihlopha tse ling tse peli tsa methylene likarolong tsa ketane, e fanang ka ketane ea eona e kholo ea limolek'hule sebopeho sa helical le ho fetoha habonolo. PBT ha e hanyetsane le li-acid tse matla le li-alkali tse matla, empa e khona ho hanela metsoako e mengata ea lintho tse phelang 'me e tla bola ka mocheso o phahameng. Ka lebaka la thepa ea eona e babatsehang ea 'mele, botsitso ba lik'hemik'hale le ts'ebetso ea ts'ebetso, PBT e fetohile thepa e ntle ea sebopeho indastering ea optical cable' me e sebelisoa haholo lihlahisoa tse sa tšoaneng tsa PBT bakeng sa likhoele tsa puisano le lisebelisoa tsa optical.
2. Litšobotsi tsa Lisebelisoa tsa PBT
PBT hangata e sebelisoa ka mokhoa oa ho kopanya ho fetotsoeng. Ka ho eketsa li-retardants tsa lelakabe, lisebelisoa tse matlafatsang le mekhoa e meng ea ho fetola, ho hanyetsa mocheso oa eona, ho pata motlakase le ho ikamahanya le maemo ho ka ntlafatsoa le ho feta. PBT e na le matla a phahameng a mochine, ho tiea ho hotle le ho hanyetsa ho apara, 'me e ka sireletsa ka katleho likhoele tsa optical ka hare ho cable ea optical ho tloha tšenyo ea khatello ea mochine. E le e 'ngoe ea lisebelisoa tse tloaelehileng tsa lisebelisoa tsa optical cables, PBT resin e tiisa hore lihlahisoa tsa optical cable li na le ho feto-fetoha ha maemo le botsitso ha li ntse li boloka matla a sebopeho.
Ho sa le joalo, e na le botsitso bo matla ba lik'hemik'hale 'me e khona ho hanela mecha ea litaba e fapaneng e senyang, ho netefatsa ts'ebetso e tsitsitseng ea nako e telele ea lithapo tsa optical libakeng tse rarahaneng tse kang mongobo le letsoai. Lisebelisoa tsa PBT li na le botsitso bo botle ba mocheso 'me li ka boloka ts'ebetso e tsitsitseng esita le libakeng tse phahameng tsa mocheso, ho etsa hore e tšoanelehe bakeng sa lisebelisoa tsa optical cable libakeng tse fapaneng tsa mocheso. E na le ts'ebetso e ntle ea ts'ebetso 'me e ka etsoa ka extrusion, molding ea ente le mekhoa e meng. E loketse likopano tsa li-cable tsa optical tsa libopeho le mekhoa e fapaneng 'me ke polasetiki ea boenjiniere e sebetsang hantle e sebelisoang haholo ha ho etsoa cable.
3. Tšebeliso ea PBT ho Li-Cables tsa Optical
Ts'ebetsong ea tlhahiso ea lisebelisoa tsa optical, PBT e sebelisoa haholo-holo ho hlahisa li-tubes tse hlephileng bakeng salikhoele tsa optical. Matla a eona a phahameng le ho tiea ha eona ho ka tšehetsa le ho sireletsa ka katleho likhoele tsa optical, ho thibela tšenyo e bakiloeng ke lintho tsa 'mele tse kang ho khumama le ho otlolla. Ho phaella moo, thepa ea PBT e na le ts'ebetso e ntle ea mocheso le ts'ebetso e khahlanong le botsofali, e thusang ho matlafatsa botsitso le ho tšepahala ha likhoele tsa optical nakong ea ts'ebetso ea nako e telele. Ke e 'ngoe ea lisebelisoa tsa mantlha tsa PBT tse sebelisoang mehala ea optical hajoale.
PBT e boetse e sebelisoa hangata joalo ka sheath ea kantle ea likhoele tsa optical. Sheath ha e hloke feela ho ba le matla a itseng a mochini ho sebetsana le liphetoho tikolohong ea kantle, empa hape e hloka ho ba le khanyetso e ntle ea ho roala, k'hemik'hale ea kutu ea lik'hemik'hale le ho hanyetsa botsofali ba UV ho netefatsa bophelo ba ts'ebeletso ea thapo ea optical nakong ea ho beha kantle, libakeng tse mongobo kapa tsa Marine. Optical cable sheath e na le litlhoko tse phahameng bakeng sa ts'ebetso ea ts'ebetso le ho ikamahanya le maemo a tikoloho ea PBT, 'me resin ea PBT e bontša ho lumellana hantle ha kopo.
Lits'ebetsong tse kopaneng tsa optical cable, PBT e ka boela ea sebelisoa ho etsa likarolo tsa bohlokoa joalo ka mabokose a kopaneng. Likarolo tsena li hloka ho fihlela litlhoko tse tiileng tsa ho tiisa, ho thibela metsi le ho hanyetsa boemo ba leholimo. Lisebelisoa tsa PBT, tse nang le thepa e ntle ea 'mele le botsitso ba sebopeho, ke khetho e nepahetseng haholo mme e bapala karolo ea bohlokoa ea ts'ehetso ea sebopeho tsamaisong ea lisebelisoa tse tala tsa cable.
4. Mehato ea Tlhokomelo
Pele ho ts'ebetso ea ho bopa ente, PBT e hloka ho omisoa ho 110 ℃ ho 120 ℃ bakeng sa lihora tse ka bang 3 ho tlosa mongobo o kentsoeng le ho qoba ho hlaha ha li-bubble kapa brittleness nakong ea ts'ebetso. Mocheso oa ho bopa o lokela ho laoloa pakeng tsa 250 ℃ le 270 ℃, 'me mocheso oa hlobo o khothaletsoa ho bolokoa ho 50 ℃ ho isa ho 75 ℃. Hobane mocheso oa phetoho ea khalase oa PBT o 22 ℃ feela mme sekhahla sa ho pholisa sa kristale se potlakile, nako ea eona ea ho pholisa e batla e le khuts'oane. Nakong ea ts'ebetso ea ho etsa ente, hoa hlokahala ho thibela mocheso oa nozzle hore o fokotsehe haholo, o ka etsang hore mocha oa phallo o koaloe. Haeba mocheso oa moqomo o feta 275 ℃ kapa thepa e qhibilihisitsoeng e lula nako e telele haholo, e ka baka ho senyeha ha mocheso le ho kokobela.
Ho khothalletsoa ho sebelisa heke e kholoanyane bakeng sa ente. Sistimi ea semathi se chesang ha ea lokela ho sebelisoa. Hlobo e lokela ho boloka phello e ntle ea ho tima. Lisebelisoa tsa PBT sprue tse nang le li-flame retardants kapa fiber fiber reinforcement ha li khothalletsoe hore li sebelisoe hape ho qoba ho senyeha ha ts'ebetso. Ha mochine o koetsoe, moqomo o lokela ho hloekisoa ka nako ka lisebelisoa tsa PE kapa PP ho thibela carbonization ea lisebelisoa tse setseng. Mekhahlelo ena ea ts'ebetso e na le tataiso e sebetsang bakeng sa baetsi ba lisebelisoa tse tala tsa cable ka bongata bo boholo.
5. Melemo ea Kopo
Ts'ebeliso ea PBT ka likhoele tsa optical e ntlafalitse haholo ts'ebetso ea kakaretso ea likhoele tsa optical. Matla a eona a phahameng le ho tiea ha eona ho matlafatsa ho hanyetsa tšusumetso le ho hanyetsa mokhathala oa cable ea optical, le ho lelefatsa bophelo ba eona ba tšebeletso. Ho sa le joalo, ts'ebetso e ntle ea lisebelisoa tsa PBT e ntlafalitse katleho ea tlhahiso le ho fokotsa litšenyehelo tsa tlhahiso. Ntho e ntle ka ho fetisisa e khahlanong le botsofali le lik'hemik'hale tsa ts'oaetso ea lik'hemik'hale tsa cable ea optical e etsa hore e boloke ts'ebetso e tsitsitseng ka nako e telele libakeng tse thata, e leng ho matlafatsang haholo ho tšepahala le ho boloka potoloho ea sehlahisoa.
E le karolo ea bohlokoa lihlahisoa tse tala tsa likhoele tsa optical, resin ea PBT e bapala karolo ea lihokelo tse ngata tsa meralo mme ke e 'ngoe ea lipolasetiki tsa boenjiniere ba thermoplastic tseo baetsi ba lithapo tsa optical ba li etelletsang pele ha ba khetha lisebelisoa tsa cable.
6. Qetello le Litebello
PBT e fetohile ntho ea bohlokoa ka ho fetisisa lefapheng la tlhahiso ea cable ea optical ka lebaka la ts'ebetso ea eona e tsotehang ea thepa ea mechine, botsitso ba mocheso, ho hanyetsa kutu le ho sebetsa hantle. Nakong e tlang, ha indasteri ea puisano ea optical e ntse e tsoela pele ho ntlafatsa, litlhoko tse phahameng li tla behoa pele bakeng sa ts'ebetso ea thepa. Indasteri ea PBT e lokela ho tsoela pele ho khothaletsa boqapi ba theknoloji le nts'etsopele ea ts'ireletso ea tikoloho e tala, ho tsoela pele ho ntlafatsa ts'ebetso ea eona e felletseng le katleho ea tlhahiso. Ha ho ntse ho kopana le litlhoko tsa ts'ebetso, ho fokotsa tšebeliso ea matla le litšenyehelo tsa thepa ho tla thusa PBT ho phetha karolo ea bohlokoa ho feta lithapo tsa optical le mefuta e mengata e mengata ea libaka tsa kopo.
Nako ea poso: Jun-30-2025