Raws li ib tug kws manufacturers ntawm PTFE nplaum daim kab xev thiab lwm yam khoom rwb thaiv tsev, Jiangsu Aokai New Materials Technology Co., Ltd. Thaum PTFE high-temperature daim kab xev muaj nuj nqis rau nws zoo heev dielectric zog thiab thermal stability, hnyav high-frequency thiab high-voltage ua hauj lwm tej yam kev mob qhia ntau yam kev pheej hmoo.
Kev nkag siab txog cov kev pheej hmoo no - suav nrog kev kub ntxhov siab, kev tawg hluav taws xob, kev poob siab, thiab ib puag ncig - yog qhov tseem ceeb rau kev tsim qauv tsim.
Hluav taws xob muaj zog txaus ntshai
High-Voltage Breakdown: PTFE tapes muaj txwv dielectric breakdown tsis kam. Piv txwv li, ib daim kab xev nrog 0.11mm tag nrho cov tuab yuav muaj qhov tawg ntawm kwv yees li 6.1kV. Tsis txaus thickness los yog nyob rau hauv impurities (pinholes, contaminants) yuav yooj yim ua rau high-voltage breakdown thiab rwb thaiv tsev tsis ua hauj lwm.
Kev Tso Tawm Ib Feem (Corona Discharge): Hauv qhov chaw muaj hluav taws xob siab, cov kab mob ntawm qhov chaw (plua plav, roj stains) thiab cov pa me me sab hauv tsim hluav taws xob cov ntsiab lus, ua rau corona paug. Ntev mus tas li tso tawm maj mam erodes cov txheej insulating, ua rau tsis ua hauj lwm ntxov ntxov.
Rwb thaiv tsev Deterioration los ntawm Environmental Factors:
Cov av noo: Thaum txheeb ze av noo tshaj 85%, qhov saum npoo ntawm PTFE tuaj yeem poob qis - los ntawm 10⊃1;⁷Ω mus rau ib ncig ntawm 10⊃1;⊃2;Ω - thiab qhov hluav taws xob tawg tuaj yeem txo los ntawm 30% mus rau 50%.
Cov kab mob: Cov hmoov av los yog ntsev tsuag rau ntawm daim kab xev nplaum ua cov txuas txuas txuas, tsim kom muaj cov dej ntws tawm tam sim no.
Hauv cov khoom siv hluav taws xob high-voltage, lub zog dielectric ntawm PTFE tapes tsis yog tus nqi ruaj khov tab sis nyob ntawm ntau yam ntawm daim ntawv thov. Rau cov qib corona-resistant, manufacturers feem ntau koom nrog inorganic fillers xws li mica los yog ceramic hais rau hauv PTFE matrix. Cov fillers no tsim ntau micro-interfaces uas disperse nqi concentration thiab suppress ib feem ntawm kev ua si. Thaum xaiv PTFE daim kab xev rau high-voltage inverter motors (piv txwv li, 6kV rau 10kV chav kawm), nws raug nquahu kom siv corona-resistant PTFE daim kab xev nrog ib tug tuab ntawm tsawg kawg yog 0.18mm thiab xyuas qhov ib feem ntawm qhov hluav taws xob inception voltage (PDIV) nyob rau hauv qhov tseeb kev khiav hauj lwm kub, raws li PDIV feem ntau txo los ntawm 20-30 ° C ntawm chav tsev kub ntawm 20-30 ° C.
Thermal Stability Risks
Kev Kub Kub Kub: PTFE daim kab xev feem ntau tuaj yeem ua haujlwm ruaj khov ntawm qhov kub tsis tu ncua ntawm 260 ° C. Txawm li cas los xij, thaum qhov kub siab tshaj 250 ° C (tshwj xeeb tshaj yog ze 300 ° C), cov saw hlau molecular pib decompose. Qhov no decomposition zoo heev txo lub zog dielectric thiab tsim kev puas tsuaj rau rwb thaiv tsev.
Thermal-Oxygen Synergistic Effect: Kev sib xyaw ua ke ntawm qhov kub thiab txias thiab oxygen accelerates cov khoom laus. Nyob rau hauv cov xwm txheej kub thiab av noo, qhov kev puas tsuaj rau qhov kev ua haujlwm tsis zoo tuaj yeem nce 30% mus rau 50% piv rau cov cua sov qhuav ib leeg.
Thaum PTFE daim kab xev yog siv nyob rau hauv kaw switchgear los yog transformer windings qhov twg oxygen mov yog txwv, thermal aging tus cwj pwm txawv heev los ntawm qhib cua. Cov kev tshawb fawb qhia tau hais tias PTFE lub thermal decomposition tus nqi hauv nitrogen yog kwv yees li ib feem kaum ntawm cov huab cua nyob rau tib qhov kub. Qhov no txhais tau hais tias rau hermetically kaw high-voltage Cheebtsam, PTFE daim kab xev tuaj yeem ua tiav kev pab cuam lub neej ntev dua txawm tias qhov kub thiab txias me ntsis saum 260 ° C. Txawm li cas los xij, thaum pib decomposition, los ntawm cov khoom xws li carbonyl fluoride thiab perfluoroisobutylene yog cov tshuaj lom thiab corrosive rau cov hlau hu. Yog li ntawd, nws yog ib qho tseem ceeb los xyuas kom meej tias cov ntawv thov kub tseem nyob hauv qab ntawm qhov pib decomposition - qhov kev nyab xeeb ntawm 30-50 ° C yog pom zoo rau qhov tseem ceeb ntawm cov rwb thaiv tsev high-voltage.
High-Frequency Characteristic Risks
Teeb liab Attenuation thiab Distortion: Lub dielectric tas li (Dk) ntawm tus qauv PTFE yog li ntawm 2.0 txog 2.6. Cov khoom lag luam nrog kev sib txawv ntau dhau ntawm Dk tuaj yeem ua rau muaj kev cuam tshuam thiab cuam tshuam ntawm cov teeb liab ntau zaus thaum sib kis - qhov teeb meem tseem ceeb rau kev siv RF thiab microwave.
Thaum tshav kub kub Generation nyhuv: PTFE muaj qhov tsis tshua muaj dielectric poob tangent (tan δ), feem ntau qis dua 0.0025. Txawm li cas los xij, yog tias qhov poob siab dhau lawm (vim impurities lossis kev ua tsis zoo), cov cua sov ntau dhau yuav raug tsim nyob rau hauv qhov hluav taws xob ntau zaus. Qhov kev ua kom sov tus kheej no ua rau cov khoom siv aging thiab tuaj yeem ua rau thermal runaway.
Mechanical & Environmental Adaptability Risks
Mechanical Stress Damage: Muaj kev sib txhuam thiab kev sib txhuam thaum lub sij hawm teeb tsa lossis kev ua haujlwm yuav ua rau micro-cracks thiab abrasion nyob rau hauv cov khoom, ua rau tag nrho cov rwb thaiv tsev kev ua tau zoo. Nthuav khoov lossis npoo yuav tsum zam.
Tshuaj & Radiation Corrosion: Muaj zog corrosive media xws li molten alkali hlau thiab chlorinated hydrocarbons, nrog rau cov hluav taws xob ntau dhau (tshaj 10⁴ Gy), yuav rhuav tshem cov qauv molecular ntawm PTFE thiab txo qis nws lub zog dielectric.
Adhesive Failure: xaiv cov nplaum tsis zoo (xws li, acrylic-raws li adhesives) tuaj yeem muag thiab plam adhesion nyob rau hauv qhov kub thiab txias, ua rau daim kab xev hloov, unwinding, los yog creep - tshwj xeeb tshaj yog muaj teeb meem nyob rau hauv ntsug los yog vibrating daim ntaub ntawv.
Low-Temperature Brittleness: Feem ntau PTFE tapes poob yooj thiab ua nkig thaum kub poob qis dua -70 ° C. Txawm hais tias tsis tshua muaj nyob rau hauv daim ntawv thov hluav taws xob, qhov no tseem ceeb rau cov khoom siv sab nraum zoov lossis aerospace raug mob khaub thuas.
Xaus – Kev xaiv Risk-Aware kom ntseeg tau
Siv PTFE nplaum daim kab xev nyob rau hauv high-voltage thiab high-frequency daim ntaub ntawv yuav tsum tau ceev faj saib xyuas ntawm ntau yam muaj feem yuav. Los ntawm kev nkag siab txog kev txwv lub zog hluav taws xob, kev coj tus cwj pwm kev laus, cov khoom siv hluav taws xob ntau zaus, thiab ib puag ncig rhiab heev, cov kws ua haujlwm tuaj yeem xaiv cov kab xev kom raug - lossis thov cov kev daws teeb meem - kom tsis txhob ua tsis tiav ntxov.
Raws li ib tug ntseeg PTFE high-temperature daim kab xev chaw tsim tshuaj paus , Aokai muab tailored khoom rau thov hluav taws xob rwb thaiv tsev daim ntaub ntawv hla PTFE coated ntaub, PTFE conveyor siv, PTFE mesh siv, PTFE zaj duab xis daim kab xev, thiab PTFE fiberglass daim kab xev.
Cov ntsiab lus saum toj no yog muab los ntawm Jiangsu Aokai New Materials Technology Co., Ltd.
Rau cov ncauj lus kom ntxaws tsis, daim ntawv thov kev daws teeb meem, thiab cov kev pabcuam customized rau peb cov khoom siv tag nrho suav nrog PTFE cov ntaub ntawv kub, PTFE kub daim kab xev, PTFE siab kub mesh siv, seamless fusing tshuab siv, ib sab PTFE ntaub, kub resistant conveyor siv thiab tshav kub-resistant fiberglass daim ntaub , thov hu rau peb dawb:
Peb ua raws li kev lag luam lub tswv yim ntawm kev tshaj lij thiab kev ncaj ncees, thiab tau mob siab rau muab cov kev daws teeb meem zoo ib yam thiab kev xav zoo rau txhua tus neeg siv khoom.
