Uhlalutyo lweSicelo kunye neeNgcebiso ze-PBT kwi-Optical Cable Industry

1. Isishwankathelo

Ngophuhliso olukhawulezayo lwetekhnoloji yolwazi kunye nonxibelelwano, iintambo zamehlo, njengeyona nto iphambili yokuhanjiswa kolwazi lwale mihla, zineemfuno eziphezulu zokusebenza kunye nomgangatho.I-Polybutylene terephthalate (PBT), njengeplastiki yobunjineli be-thermoplastic enomsebenzi ogqwesileyo obanzi, idlala indima ebalulekileyo ekwenzeni iintambo zokukhanya. I-PBT yenziwe nge-polymerization ye-condensation ye-dimethyl terephthalate (DMT) okanye i-terephthalic acid (TPA) kunye ne-butanediol emva kwe-esterification. Yenye yeeplasitiki ezintlanu zobunjineli benjongo jikelele kwaye yaqala yaphuhliswa yi-GE yaze yaphuhliswa ngeminyaka yee-1970. Nangona iqale emva kwexesha, ikhule ngokukhawuleza okukhulu. Ngenxa yokusebenza kwayo okugqwesileyo okugqwesileyo, inkqubo eyomeleleyo kunye nokusebenza kweendleko eziphezulu, isetyenziswa ngokubanzi kwizixhobo zombane, iimoto, unxibelelwano, izixhobo zasekhaya kunye nezinye iinkalo. Ngokukodwa xa kusenziwa iintambo zamehlo, isetyenziswa ikakhulu ekuveliseni iityhubhu zefiber optical loose kwaye luhlobo oluyimfuneko lwemathiriyeli yentambo esebenza kakhulu kwizinto ezikrwada zeentambo zokukhanya.

I-PBT yi-milky white semi-transparent ukuya kwi-opaque semi-crystalline polyester enokumelana nobushushu obugqwesileyo kunye nokuzinza. Ubume bayo bemolekyuli yi [(CH₂)₄OOCC₆H₄COO]n. Xa kuthelekiswa ne-PET, inamaqela amabini e-methylene kumacandelo e-chain, inika i-molecular chain chain i-helical structure kunye nokuguquguquka okungcono. I-PBT ayichasananga ne-acids eqinile kunye ne-alkali eqinile, kodwa inokuxhathisa i-solvents ezininzi zezinto eziphilayo kwaye ziya kubola kumaqondo aphezulu. Ngombulelo kwiimpawu zayo ezibalaseleyo zomzimba, ukuzinza kweekhemikhali kunye nokusebenza kokucubungula, i-PBT iye yaba yinto efanelekileyo yesakhiwo kwimboni ye-cable optical kwaye isetyenziswa ngokubanzi kwiimveliso ezahlukeneyo ze-PBT kwiintambo zonxibelelwano kunye neentambo zokukhanya.

2. Iimpawu ze-PBT Materials

I-PBT idla ngokusetyenziswa ngendlela yeengxube ezilungisiweyo. Ngokudibanisa ii-retardants zomlilo, ii-agent zokuqinisa kunye nezinye iindlela zokuguqulwa, ukumelana nokushisa kwayo, ukugquma kombane kunye nokulungelelaniswa kokulungiswa kunokuphuculwa ngakumbi. I-PBT inamandla amakhulu omatshini, ukuqina okulungileyo kunye nokumelana nokunxiba, kwaye inokukhusela ngokufanelekileyo iifayili ze-optical ngaphakathi kwekhebula le-optical kumonakalo woxinzelelo lomatshini. Njengenye yezinto eziqhelekileyo eziqhelekileyo kwiintambo ze-optical, i-PBT resin iqinisekisa ukuba iimveliso ze-cable optical zine-flexibility efanelekileyo kunye nokuzinza ngelixa zigcina amandla okwakhiwa.

Okwangoku, inozinzo olomeleleyo lwekhemikhali kwaye inokumelana nemithombo yeendaba eyonakalisayo, iqinisekisa ukusebenza okuzinzileyo kwexesha elide leentambo zokukhanya kwiindawo ezintsonkothileyo ezifana nokufuma kunye netyuwa yokutshiza. Izinto ze-PBT zinozinzo oluhle kakhulu lwe-thermal kwaye lunokugcina ukusebenza okuzinzile nakwiindawo eziphakamileyo zokushisa, okwenza ukuba zilungele ukusetyenziswa kwentambo ye-optical kwiindawo ezahlukeneyo zokushisa. Inomsebenzi ogqwesileyo wokucutshungulwa kwaye inokubunjwa nge-extrusion, isitofu sokubumba kunye nezinye iindlela. Ifanelekile kwiindibano zentambo ye-optical yeemilo ezahlukeneyo kunye nezakhiwo kunye neplastiki yobunjineli obuphezulu obusetyenziswa ngokubanzi kwimveliso yentambo.

3. Ukusetyenziswa kwe-PBT kwiiCables ze-Optical

Kwinkqubo yokuvelisa intambo ye-optical, i-PBT isetyenziselwa kakhulu ukuveliswa kweetyhubhu ezivulekileyoiintsinga zamehlo. Amandla ayo aphezulu kunye nokuqina kunokuxhasa ngokufanelekileyo kunye nokukhusela iifayili ze-optical, ukukhusela umonakalo obangelwa yizinto eziphathekayo ezifana nokugoba kunye nokwelula. Ukongeza, izinto ze-PBT zinokumelana nobushushu obugqwesileyo kunye nokusebenza kokuchasana nokuguga, okunceda ukukhulisa uzinzo kunye nokuthembeka kweentambo ze-optical ngexesha lokusebenza kwexesha elide. Ngomnye wezinto eziqhelekileyo ze-PBT ezisetyenziswa kwiintambo zokukhanya okwangoku.

I-PBT isoloko isetyenziswa njenge sheath yangaphandle yeentambo zamehlo. I-sheath ayifuni nje ukuba namandla athile oomatshini ukujamelana notshintsho kwimeko yangaphandle, kodwa kufuneka ibe nokuxhathisa okugqwesileyo, ukuxhathisa imichiza kunye nokumelana nokuguga kwe-UV ukuze kuqinisekiswe ubomi benkonzo yentambo yokukhanya ngexesha lokubeka ngaphandle, kwiindawo ezifumileyo okanye zaseLwandle. I-optical cable sheath ineemfuno eziphezulu zokusetyenzwa kwentsebenzo kunye nokuguquguquka kokusingqongileyo kwe-PBT, kunye ne-PBT resin ibonisa ukuhambelana kakuhle kwesicelo.

Kwiinkqubo ze-optical cable joint, i-PBT ingasetyenziselwa ukuvelisa izinto eziphambili ezifana neebhokisi ezidibeneyo. Ezi zixhobo kufuneka zihlangabezane neemfuno eziqinileyo zokutywinwa, ukukhuselwa kwamanzi kunye nokumelana nemozulu. Izinto ze-PBT, ezineempawu ezibalaseleyo zomzimba kunye nozinzo lwesakhiwo, lukhetho olufanelekileyo kakhulu kwaye ludlala indima ebalulekileyo yenkxaso yesakhiwo kwinkqubo ye-optical cable ekrwada.

4. Ukwenziwa kweMiqathango

Phambi kokusetyenzwa kwenaliti yokubumba, i-PBT kufuneka yomiswe kwi-110℃ ukuya kwi-120℃ malunga neeyure ezi-3 ukususa ukufuma kwe-adsorbed kwaye uthintele ukwakheka kwamaqamza okanye ukonakala ngexesha lokusetyenzwa. Ubushushu bokubumba kufuneka bulawuleke phakathi kwe 250℃ kunye ne 270℃, kwaye ubushushu bokubumba bunconywa ukuba bugcinwe ku 50℃ ukuya kuma 75℃. Ngenxa yokuba iqondo lokushisa lokutshintsha kweglasi ye-PBT liyi-22 ℃ kuphela kwaye izinga lokupholisa icrystallization liyakhawuleza, ixesha layo lokupholisa lifutshane. Ngethuba lenkqubo yokubumba i-injection, kuyimfuneko ukukhusela ubushushu be-nozzle ukuba bube buphantsi kakhulu, obunokubangela ukuba umjelo wokuhamba uvalwe. Ukuba iqondo lobushushu lomphanda lingaphezulu kwe-275℃ okanye into enyityilisiweyo ihlala ixesha elide, inokubangela ukuthotywa kobushushu kunye nokuthotywa.

Kucetyiswa ukuba kusetyenziswe isango elikhulu lokutofa. Inkqubo yembaleki eshushu kufuneka ingasetyenziswa. Isikhunta kufuneka sigcine umphumo omhle wokukhupha. Izixhobo ze-PBT zesprue eziqulethe iiretardants zomlilo okanye i-glass fiber reinforcement ayikhuthazwa ukuba iphinde isetyenziswe ukuphepha ukuthotywa kokusebenza. Xa umatshini uvaliwe, umgqomo kufuneka uhlambuluke ngexesha kunye ne-PE okanye i-PP impahla ukukhusela i-carbonization yezinto eziseleyo. Ezi parameters zokusetyenzwa zinokubaluleka kwesikhokelo esisebenzayo kubenzi bezinto ezibonakalayo zentambo ekrwada kwimveliso yemathiriyeli yentambo enkulu.

5. Iingenelo zesicelo

Ukusetyenziswa kwe-PBT kwiintambo ze-optical kuye kwaphucula kakhulu ukusebenza ngokubanzi kweentambo zokukhanya. Amandla ayo aphezulu kunye nokuqina kwandisa ukuxhathisa impembelelo kunye nokumelana nokudinwa kwentambo ye-optical, kunye nokwandisa ubomi bayo benkonzo. Okwangoku, ukuqhubekeka okugqwesileyo kwezinto ze-PBT kuphucule ukusebenza kakuhle kwemveliso kunye nokunciphisa iindleko zokwenziwa. Ukuchasana nokuguga okugqwesileyo kunye nokuchasana kweekhemikhali ze-corrosion ye-cable optical kwenza ukuba kugcinwe ukusebenza okuzinzile ixesha elide kwiindawo ezinzima, ukunyusa kakhulu ukuthembeka kunye nokugcinwa komjikelezo wemveliso.

Njengodidi oluphambili kwizinto eziluhlaza zeentambo ze-optical, i-resin ye-PBT idlala indima kwiikhonkco ezininzi zesakhiwo kwaye yenye yeeplastiki zobunjineli be-thermoplastic ukuba abavelisi be-cable optical banike kuqala xa bekhetha izinto zentambo.

6. Izigqibo kunye neZibonelelo

I-PBT iye yaba yinto ebalulekileyo ebalulekileyo kwintsimi yokwenziwa kwentambo ye-optical ngenxa yokusebenza kwayo okugqwesileyo kwiipropati zomatshini, ukuzinza kwe-thermal, ukuxhathisa ukubola kunye nokuqhubekeka. Kwixesha elizayo, njengoko ishishini lonxibelelwano lwe-optical liqhubeka nokuphucula, iimfuno eziphezulu ziya kubekwa phambili ekusebenzeni kwezinto. Ishishini le-PBT kufuneka liqhubeke likhuthaza ukusungulwa kobuchwepheshe kunye nophuhliso lokukhuselwa kokusingqongileyo okuluhlaza, ngakumbi ukuphucula ukusebenza kwayo okubanzi kunye nokusebenza kakuhle kwemveliso. Ngelixa ukuhlangabezana neemfuno zokusebenza, ukunciphisa ukusetyenziswa kwamandla kunye neendleko zezinto eziphathekayo kuya kunceda i-PBT idlale indima ebaluleke kakhulu kwiintambo ze-optical kunye noluhlu olubanzi lweenkalo zesicelo.