Nyob rau hauv ib tug ua tiav fiber ntau optic cable, muaj ntau yam khoom nyob rau hauv lub fiber optic cable uas yuav tsum tau muab sau ntxiv rau qhov tsim nyog sab hauv fiber optic cables raws li cov kis tau tus mob thiab cov kev tiv thaiv sab nrauv sheath. Piv txwv li, raws li kev txhawb nqa thiab kev txhawb zog rau cov khoom tensile load-bearing lub cev, roj thiab cable muab tshuaj txhuam rau cov dej tsis kam thiab viscosity, thiab cov hlua khi kom yooj yim stripping ntawm optical cables. Hauv qab no, peb yuav piav qhia txog ntau yam khoom siv, lawv lub luag haujlwm, thiab cov yam ntxwv ntawm cov ntaub ntawv lawv tus kheej.
Lub tes tsho khoom PBT (polybutylene terephthalate)
Thaum qhov hnyav molecular ntawm PBT cov khoom loj txaus, nws lub zog tensile, khoov lub zog, cuam tshuam lub zog, thiab Young's modulus siab. PBT xoob raj muaj kev tiv thaiv zoo rau axial nro, radial lateral siab, thiab cuam tshuam quab yuam, muab kev tiv thaiv zoo tshaj plaws rau cov khoom siv kho qhov muag. Cov khoom siv PBT yog ester polymer nrog cov kuab tshuaj zoo, roj tsis kam, thiab tshuaj tiv thaiv corrosion. Nws muaj kev sib raug zoo nrog fiber ntau optic filling paste thiab fiber optic filling paste thiab tau siv dav.
Its main characteristics are: low shrinkage, Strong hydrolysis resistance; The coefficient of linear thermal expansion is small, Tensile strength>55MPa, khoov elastic modulus ntawm 2.2GPa, yooj yim rau txheej txheem; Muaj cov kuab tshuaj zoo, roj tsis kam, tshuaj tiv thaiv corrosion, zoo sib xws nrog fiber ntau muab tshuaj thiab cable muab tshuaj, thiab siab crystallinity; Vim qhov zoo yaj fluidity, ceev crystallization tus nqi, thiab luv luv ua voj voog ntawm PBT khoom.
Filling tshuaj pleev
Lub filling paste rau optical cables feem ntau muab faib ua ob pawg:
Nws tau sau rau hauv cov xwm txheej uas ncaj qha tuaj rau hauv kev sib cuag nrog cov khoom siv kho qhov muag, xws li lub tes tsho xoob (xws li cov hlab ntsha thiab cov pob txha pob txha), thiab hu ua fiber ntau paste.Fiber muab tshuaj txhuam yuav tsum tau softness, me me shrinkage, qis coefficient ntawm linear expansion, thiab huv. .
Sau rau hauv cov cheeb tsam uas tsis ncaj qha tuaj rau hauv kev sib cuag nrog cov fibers optical, xws li cable cores los yog qhov khoob ntawm cov xov hlau twisted, hu ua cable paste.
Cov kev cai tshwj xeeb rau kev sau tshuaj pleev:
Lub qab zib yog ruaj khov thiab siab hydrophobic
Kev sib raug zoo nrog lwm cov ntaub ntawv ntawm optical fibers thiab cables, tsis muaj tshuaj lom neeg corrosion, thiab tsis cuam tshuam rau optical thiab mechanical zog
Mos nyob rau hauv qhov kub thiab txias ntawm kev siv, nrog ib tug me me coefficient ntawm linear expansion, txo tshav kub rov qab, thiab ib tug siab poob point, tsis dripping ntawm qhov kub ntawm kev siv.
Cov khoom siv nws tus kheej tsis dhau hydrogen evolution (los yog micro hydrogen evolution), uas tsis cuam tshuam rau qhov attenuation ntawm optical fiber nyob rau hauv kev siv tej yam kev mob
Ib qho yooj yim sau, tswj tau yooj yim, tsis muaj tshuaj lom, nyab xeeb siv, thiab lub sijhawm cia ntev, yooj yim los ntxuav, yooj yim siv, thiab pheej yig
Cov khoom siv txhawb zog
Fiber optic cable reinforcement yog muab tso rau ntawm qhov chaw (los yog txheej txheej) ntawm fiber ntau optic cable, uas yog ib feem siv los tiv thaiv cov neeg kho tshuab kev nyuaj siab uas lub fiber optic cable tej zaum yuav raug, tiv thaiv axial kev nyuaj siab uas yuav tshwm sim thaum lub sij hawm cable. tso thiab daim ntawv thov, thiab xyuas kom meej tias cov fiber ntau optic cable thiab cable muaj cov kab mob me me hauv qhov nro loj. Yuav tsum muaj lub zog tensile siab thiab qis elongation, nrog rau cov hlau nro ntau dua 180N, thiab qhov elongation ntawm cov tub ntxhais tseem ceeb yuav tsum ua raws li qhov elongation ntawm lub tes tsho xoob. Cov feem ntau siv reinforcing Cheebtsam muaj xws li cov hauv qab no:
Phosphated steel hlau
Lub hauv paus hlau reinforcement ntawm optical cables feem ntau siv phosphorized steel hlau es tsis txhob galvanized steel hlau. Vim tias cov dej thaiv cov tshuaj pleev siv hauv cov khoom siv kho qhov muag yog acidic, zinc yog ib qho hlau uas muaj peev xwm hloov tau hydrogen. Qhov diffusion thiab permeation ntawm hydrogen ua rau hydrogen puas tsuaj rau cov fibers optical. Kev siv cov phosphated steel hlau tuaj yeem tiv thaiv kev puas tsuaj rau hydrogen rau optical fibers. Phosphated steel hlau yog ib tug uniformly, tsis tu ncua, thiab nrees plated txheej ntawm phosphating nyob rau saum npoo ntawm high carbon steel hlau. Qhov hnyav ntawm phosphating txheej yuav tsum siab tshaj 3g / m.
Fiberglass reinforced yas (FRP)
Fiberglass center reinforcement yog non-metallic reinforcement, uas yog tshwj xeeb tshaj yog cov yam ntxwv ntawm lub teeb yuag, muaj zog mechanical zog, thiab tsis kam mus rau electromagnetic cuam tshuam. Thaum cov kab hluav taws xob kho qhov muag yuav tsum tau siv rau hauv thaj chaw uas muaj hluav taws xob nquag thiab hluav taws xob los tiv thaiv cov hluav taws xob muaj zog, piv txwv li, qhov chaw nruab nrab ntawm txhua qhov dielectric tus kheej txhawb nqa qhov muag cables (ADSS) ntawm high-voltage fais fab kis kab yuav tsum tau ua los ntawm fiberglass. kev txhawb zog kom tsis txhob muaj kev cuam tshuam ntawm xob laim thiab hluav taws xob.
Fiberglass nyob rau hauv FRP load-bearing Cheebtsam yuav tsum tau ua los ntawm acid resistant thiab siab silica S-hom fiberglass. FRP yog ib qho thermosetting fiber reinforced yas, uas yog tus cwj pwm los ntawm nws qhov siab elastic modulus thiab tensile lub zog zoo li fibers, nrog rau cov rigidity zoo li steel strands. Nws yog ib qho zoo los tiv thaiv shrinkage txhawb lub caij thaum kub qis, uas ua rau qhov kub thiab txias attenuation ntawm optical cables tsis hloov thiab txawm zoo heev.
Aramid xov paj
Qhov hnyav ntawm tag nrho cov dielectric tus kheej txhawb nqa optical cables (ADSS optical cables) ntsia rau ntawm high-voltage fais fab kis kab yog tsis txaus siab los ntawm dai steel cables, tab sis los ntawm tensile Cheebtsam ntawm fiberglass round rods thiab aramid yarns configured los ntawm optical cables lawv tus kheej mus rau txhawb lawv tus kheej qhov hnyav thiab nruj. Qhov zoo ntawm aramid xov paj yog lub teeb yuag thiab lub zog tensile siab. Feem ntau, aramid yarn yog muab tso rau nruab nrab ntawm lub puab thiab sab nrauv sheaths ntawm optical cables kom lawv muaj zog tensile longitudinal. Feem ntau, qhov ncua sij hawm ntawm ADSS optical cables siv aramid yarn raws li tus qauv tivthaiv yog 75-1000m.
Kub yaj nplaum nplaum
Txhawm rau tiv thaiv cov dej radial thiab longitudinal seepage nyob rau hauv armor txheej ntawm lub kho qhov muag cable, nws yog tsim nyog los siv kub yaj nplaum nplaum rau daim kab xev sib txuas ntawm daim kab xev sib txuas ntawm lub optical cable armor, los yog siv kub yaj nplaum los ua ib tug dej. thaiv lub nplhaib rau qhov kho qhov muag cable, es tsis txhob sau cov roj pleev xim thiab cov dej qhuav thaiv cov kab xev kom tiv thaiv dej los ntawm kev nkag mus rau qhov muag cable. Kub yaj nplaum nplaum rau optical cables yuav tsum muaj lub zog sib txuas, kev sib koom ua ke ntawm kev ntxhov siab, kev kho ceev ceev, zoo thermal stability, kev laus zoo, thiab kev sib raug zoo nrog lwm cov ntaub ntawv cable. Nws tseem yuav tsum muaj qhov zoo toughness thiab qis-kub yooj yooj yim los xyuas kom meej tias qhov kho qhov muag cable tuaj yeem cuam tshuam sab nraud cuam tshuam rau ntau qhov kub thiab txias.
Kub yaj nplaum ua haujlwm:
Txhim kho tev lub zog thiab khi cov sib tshooj ntawm optical cable armor composite daim kab xev
Siv rau cov khoom siv kho qhov muag cables, nws tuaj yeem txo qhov shrinkage ntawm cov raj yas
Dej thaiv cov nyhuv