Tanihi muendli wa xiphurofexinali wa PTFE thepi yo namarhela na switirhisiwa swo pfalela leswi fambelanaka na swona, Jiangsu Aokai New Materials Technology Co., Ltd. yi avelana vutivi bya nkoka. Loko thepi ya mahiselo yale henhla ya PTFE yi tekeriwa enhlokweni hikokwalaho ka swivumbeko swa yona swa kahle swa dielectric xikan’we naku tiya ka mahiselo, swiyimo swo tika swa ntirho wa frequency yale henhla na voltage yale henhla swi nghenisa makhombo yotala lawa yanga vaka kona.
Ku twisisa makhombo lawa – kukatsa na ku dyuhala ka mahiselo yale henhla, ku onhaka ka gezi, ku lahlekeriwa hi frequency yale henhla, na swilo swa mbango – i swa nkoka eka dizayini ya sisiteme leyi tshembekaka.
Makhombo ya Matimba ya Gezi
High-Voltage Breakdown: Tithepi ta PTFE tina ku tiya loku nga nyawuriki ka ku tshoveka ka dielectric. Xikombiso, thepi leyingana 0.11mm total thickness yingava na breakdown voltage ya kwalomu ka 6.1kV. Kunga ringanelangi ku enta kumbe thyaka rale ndzeni (pinholes, contaminants) swinga vanga hiku olova ku tshoveka ka high-voltage xikan’we naku tsandzeka ka insulation.
Partial Discharge (Corona Discharge): Eka tindzhawu letingana voltage yale henhla, swilo leswi thyakeke ehenhla ka misava (ntshuri, swivati swa oyili) na swivandla leswintsongo swa moya swale ndzeni swi endla tindzhawu ta gezi ta concentration points, leswi hlohletelaka ku humesiwa ka corona. Ku humesiwa loku yaka emahlweni nkarhi wo leha hakatsongo-tsongo ku onha leyara leyi pfalaka, leswi endlaka leswaku yi tsandzeka ka ha ri ni nkarhi.
Ku onhaka ka Insulation ku suka eka Swilo swa Ntivo-mbango:
Kutsakama: Loko relative humidity yi tlula 85%, surface resistivity ya PTFE yinga hunguteka swinene – kusuka eka 10⊃1;7Ω kuya kwalomu ka 10⊃1;⊃2;Ω – naswona breakdown voltage yinga hunguteka hi 30% kuya eka 50%.
Swilo leswi thyakeke: Conductive dust kumbe salt spray eka tape surface yi endla ti conductive bridges, leswi endlaka leswaku kuva na tindlela ta leakage current.
Eka switirhisiwa swa gezi swa voltage yale henhla, matimba ya dielectric ya tithepi ta PTFE ahi nhlayo leyi nga cinciki kambe ya titshege ngopfu hi swiyimo swa matirhiselo. Eka ti grades letinga lwisanaka na corona, vaendli vatala ku nghenisa ti inorganic fillers tofana na mica kumbe ti ceramic particles eka matrix ya PTFE. Ti fillers leti ti endla ti micro-interfaces totala leti hangalasaka charge concentration xikan’we naku tshikelela ntirho wa partial discharge. Loko ku hlawuriwa PTFE tape eka ti high-voltage inverter motors (xikombiso, 6kV kuya eka 10kV class), switsundzuxiwa ku tirhisa corona-resistant PTFE tape leyingana vukulu bya kwalomu ka 0.18mm naku tiyisisa partial discharge inception voltage (PDIV) ehansi ka mahiselo ya xiviri yo tirha, tani hileswi PDIV hi ntolovelo yihungutekaka hi 20-30% eka 150°C loko ku pimanyisiwa na mahiselo ya kamara.
Makhombo ya kutshamiseka ka kuhisa
Ku dyuhala ka mahiselo yale henhla: Tithepi ta PTFE hi ntolovelo tinga tirha hiku tiya eka mahiselo lawa ya yaka emahlweni ya 260°C. Hambiswiritano, loko mahiselo ya tlula 250°C (ngopfu-ngopfu ekusuhi ni 300°C), tikhetane ta timolekhuli ti sungula ku bola. Ku bola loku ku hunguta swinene matimba ya dielectric naswona swi endla leswaku ku va na makhombo ya ku tsandzeka ka insulation.
Thermal-Oxygen Synergistic Effect: Ku hlanganisiwa ka mahiselo yale henhla na oxygen swi hatlisisa ku dyuhala ka swilo. Ehansi ka swiyimo swo hisa na swotsakama, ku onhaka eka matirhelo ya voltage resistance swinga tlakuka hi 30% kuya eka 50% loko ku pimanyisiwa na kuhisa loku omeke ntsena.
Loko PTFE tape yitirhisiwa eka swigwitsirisi leswi pfalekeke kumbe ti transformer windings laha mphakelo wa oxygen wunga ringanelangiki, mahanyelo ya thermal aging ya hambana swinene na swiyimo swa moya lowu pfulekeke. Mindzavisiso yi kombisa leswaku mpimo wa ku bola ka mahiselo ya PTFE eka nitrogen wu kwalomu ka n’we xa khume xa leswi nga emoyeni eka mahiselo lama fanaka. Leswi swivula leswaku eka swiphemu swa high-voltage leswi pfaleriweke hi hermetically, PTFE tape yinga fikelela vutomi byo leha bya ntirho hambi kuri eka mahiselo lawa yanga ehenhla nyana ka 260°C. Hambiswiritano, loko kusungula ku bola, switirhisiwa swale tlhelo swofana na carbonyl fluoride na perfluoroisobutylene swina chefu swinene naswona swi onha eka ku hlangana ka nsimbi. Hikokwalaho, swina nkoka swinene kutiyisisa leswaku mahiselo ya xitirhisiwa ya tshama yari ehansi swinene ka decomposition threshold – margin ya vuhlayiseki ya 30-50°C ya hlohleteriwa eka insulation ya nkoka ya high-voltage.
Makhombo ya Xihlawulekisi xa Nkarhi wa le Henhla
Signal Attenuation na Distortion: Dielectric constant (Dk) ya standard PTFE yisuka eka 2.0 kuya eka 2.6. Swikumiwa leswingana ku hambuka ngopfu eka Dk swinga vanga kuhunguteka naku soholotiwa ka swikombiso swa frequency yale henhla hi nkarhi wa ku hundziseriwa – mhaka ya nkoka eka switirhisiwa swa RF na microwave.
Vuyelo bya ku Endliwa ka kuhisa: PTFE yina tangent yale hansi swinene ya dielectric loss (tan δ), hi xitalo ehansi ka 0.0025. Kambe loko ku lahlekeriwa yiri e henhla swinene (hikwalaho ka thyaka kumbe ku lulamisiwa lokunga fanelangiki), kuhisa lokukulu kuta endliwa ehansi ka ndzhawu ya gezi ya frequency yale henhla. Vuyelo lebyi byo ti hisa byi hatlisisa ku dyuhala ka swilo naswona byi nga endla leswaku ku baleka hi ku hisa.
Makhombo ya ku Cincana ka Michini & Ntivo-mbango
Ku onhaka ka Ntshikelelo wa Michini: Ku tsana loku nga heriki na ku hlangana hi nkarhi wa ku vekiwa kumbe ku tirha swi nga vanga ti micro-cracks na ku rhurhumela endzeni ka swilo, leswi onhaka matirhelo hinkwawo ya insulation. Ku gombonyoka kumbe matlhelo lama tlhavaka swifanele ku papalatiwa.
Chemical & Radiation Corrosion: Switirhisiwa swo tiya swo bola swofana na tinsimbi ta alkali leti n’okiweke na ti hydrocarbons letinga chlorinated, xikan’we na radiation yo tlula mpimo ya eneji yale henhla (ku tlula 104 Gy), swita herisa xivumbeko xa molecular ya PTFE naswona swita hunguta swinene matimba ya yona ya dielectric.
Ku tsandzeka ka Adhesive: Ku hlawuriwa ka adhesive lokunga fanelangiki (xikombiso, acrylic-based adhesives) swinga olovisa naku lahlekeriwa hi ku namarhela ehansi ka mahiselo yale henhla, leswi endlaka leswaku kuva na ku rhurha ka tape, ku pfuleka, kumbe ku creep – ngopfu ngopfu eka switirhisiwa leswi yimisiweke kumbe leswi rhurhumelaka.
Low-Temperature Brittleness: Ti tapes totala ta PTFE ti lahlekeriwa hi ku olova naswona ti hundzuka brittle loko mahiselo ya hunguteka ehansi ka -70°C. Hambi leswi swi nga talaka eka switirhisiwa swa gezi, leswi i swa nkoka eka switirhisiwa swa le handle kumbe swa le xibakabakeni leswi hlanganaka na xirhami lexikulu.
Mahetelelo – Ku Hlawula loku Lemukaka Khombo Ku Tiyisisa Ku Tshembeka
Ku tirhisa thepi yo namarhela ya PTFE eka switirhisiwa swa voltage yale henhla na frequency yale henhla swilava ku tekeriwa enhlokweni hi vukheta swivangelo swotala swa khombo. Hiku twisisa swipimelo swa matimba ya gezi, mahanyelo ya ku dyuhala ka mahiselo, swivumbeko swa dielectric swa frequency yale henhla, na ku twisisa ka mbango, vanjhiniyara vanga hlawula giredi ya thepi leyi faneleke – kutani va kombela swintshuxo leswi endleriweke wena – ku papalata ku tsandzeka ka nkarhi.
As a trusted PTFE high-temperature tape manufacturer , Aokai yi nyika switirhisiwa leswi lulamisiweke eka switirhisiwa swo lava ku pfalela gezi ku tsemakanya lapi leri pfanganisiweke na PTFE, bandi ro fambisa PTFE, bandi ra mesh ra PTFE, thepi ya filimi ya PTFE, na thepi ya fiberglass ya PTFE.
Leswi nga laha henhla swi nyikiwile hi Jiangsu Aokai New Materials Technology Co., Ltd.
Ku kuma vuxokoxoko bya tipharamitha ta xithekiniki, swintshuxo swa xikombelo, na vukorhokeri lebyi endleriweke switirhisiwa swa hina leswi heleleke ku katsa na lapi ra mahiselo ya le henhla ya PTFE, thepi ya mahiselo ya le henhla ya PTFE, bandi ra mesh ya mahiselo ya le henhla ya PTFE, bandi ra muchini wo fusa leri nga na swirhabyani, lapi ra PTFE ra tlhelo rin’we, bandi ro fambisa leri lwisanaka na mahiselo ya le henhla na lapi ra fiberglass leri tiyiselaka ku hisa , hi kombela u hi tihlanganisa hi ku ntshunxeka:
Hi namarhela filosofi ya bindzu ya vutshila na vutshembeki, naswona hi tinyiketerile ku nyika swintshuxo leswi tshembekaka swa xiyimo xin’we na vukorhokeri lebyi ehleketiweke eka tikhayente hinkwato.
