PTFE high-temperature jira rinoshandiswa zvakanyanya semagetsi ekuisa mutsinga wewaya, transformer layer, motor windings, uye high-frequency circuits. Asi tembiricha inoshanduka - kubva kuchando ichipisa kusvika pakupisa kwakanyanya - inoshandura maitiro ayo ekudzivirira. Unogona here kuvimba nePTFE jira pa200 ° C? Chii chinoitika pamusoro pe260 ° C?
Mhinduro iri nuanced. PTFE's molecular structure inopa kuvharika kwakatanhamara mukati meakawanda ekushandisa kwayo, asi kudarika 260°C kunokonzeresa kuparara kusingadzokerike. Uye nepo tembiricha inotonhora ichivandudza zvinhu zvemagetsi, inoita kuti iyo yekupfeka iite brittle.
Aokai PTFE yakaedza zvivakwa zvekudzivirira mukati mekushisa kwakanyanya. Ichi chinyorwa chinoputsa maitiro muzvikamu zvitatu: zvinowanzoitika (-180 ° C kusvika 260 ° C), zvakanyanyisa kukwira (> 260 ° C), uye tembiricha yakaderera (<0 ° C), ine data yakakosha pamusoro peresistive, simba re dielectric, uye zvinoshanda.
Normal Operating Range: -180 ° C kusvika 260 ° C - Yakanyanya Stable Insulation
Mukati meiyo chiyero, PTFE jira rekushisa-pamusoro rinochengetedza rakatanhamara uye rakagadzika kuvharwa kwemagetsi - mukana wepakati unotsigira kupararira kwayo kwemaindasitiri.
1. Volume & Surface Resistivity
Tembiricha |
Kuramba Kwevhoriyamu (Ω·cm) |
Kureva |
Ambient (25°C) |
10⊃1;⁷ – 10⊃1;⁸ |
Yakanakisa - pakati peakanakisa insulators |
200°C |
10⊃1;⊃3; – 10⊃1;⁴ |
Zvichiri nani kudarika zvinhu zvakajairika |
260°C |
>10⊃1;⊃2; (inofungidzirwa) |
Ichiri kushanda kune akawanda maapplication |
Mechanism: Resistivity inodonha zvine mwero nekukwira tembiricha nekuti tembiricha yakakwira inowedzera kufamba kwekupisa kwePTFE molecular cheni uye inomhanyisa kutama kwevatakuri vetsvina. Nekudaro, kunyangwe pa200 ° C, PTFE inokunda akawanda einjiniya mapurasitiki pakupisa kwekamuri.
Cherechedzo pakupikisa kwepamusoro: Kuramba kwepamusoro kunonyanya kubatwa nehunyoro hwemukati. PTFE inenge isiri-hygroscopic; unyoro hwepamusoro hunobuda patembiricha dzakakwirira, zvichiunza kugadzikana kwepamusoro pekudzivirira kupfuura pasi pemamiriro emukamuri-munyoro.
2. Dielectric Simba (Breakdown Voltage)
Inodzikira sezvo tembiricha inokwira. Aggravated molecular thermal movement inoita kuti zvinhu zvinyanye kukuvadzwa kwemagetsi-munda.
Kubva pakupisa kwekamuri kusvika ku200 ° C, simba renguva pfupi redhielectric rinodonha ne20 % -40%.
Kunyange zvakadaro, jira rekutanga rakatenderedza 0.1 mm gobvu richiri kushingirira ma kilovolts akati wandei (kana makumi emakilovolts kumagiredhi akakora) pa200°C - simba rekudzivirira rakachengetedzwa rakachengetwa.
3. Dielectric Constant & Dissipation Factor - Minimal Fluctuation
Property |
Kukosha (-100°C kusvika 250°C) |
Kugadzikana |
Dielectric nguva dzose (Dk) |
2.0 - 2.1 |
Kunenge flat |
Kubvisa chinhu (tan δ) |
0.0002 - 0.001 |
Yakanyanya-pasi |
Nei izvi zvichikosha: PTFE's yakanyanya symmetric molecular chimiro uye yekupedzisira-yakaderera polarization inovimbisa yakagadzikana kutapurirana kwechiratidzo uye ultra-yakaderera kupisa chizvarwa pasi pepamusoro-frequency & yakakwirira-tembiricha sevhisi. Izvi zvinokodzera PTFE seyakanakira yakakwirira-frequency insulating zvinhu zveRF uye microwave application.
Jira reAokai PTFE rinonyanya kupisa rinotsanangurwa nevatengi kune yakakwira-frequency transformer insulation nekuda kwekugadzikana kwayo Dk (2.05±0.05) uye ultra-low tanδ (0.0002-0.0005) mhiri -50°C kusvika 200°C renji. Isu tinopa dielectric zvivakwa bvunzo mishumo pakukumbira.
Yakanyanya High-Tembiricha Range: Pamusoro pe260 ° C - Kusadzoreka Kushatisa
Kupfuura PTFE yenguva yakareba inotenderwa tembiricha inokonzeresa kusagadzikana kwemuviri nekemikari kuora - kwete kudzorereka kuchinja kwemidziyo.
Temperature Range |
Material State |
Insulation Status |
260°C – 327°C |
PTFE coating inopfava; mechanical simba rakarasika zvinoshamisa. Kushushikana kwekunze kana mutoro wemagetsi zvinokonzeresa kupora deformation uye puncture → yakasanganiswa mechaniki-magetsi kutadza kunyangwe maparamendi emagetsi epakati anoramba achigamuchirwa. |
Kusavimbika - njodzi yekubaya |
Pamusoro pe327°C |
Inosvika paPTFE's crystalline melting point. Solid PTFE inoshanduka kuita yakakwira-elastic kana gel state, ichirasikirwa nechimiro chekuvimbika |
Anenge akundikana zvachose |
Pamusoro pe400°C |
Kuora kwekupisa kwakanyanya kunoburitsa kuronda magasi ane ngozi. Carbonization uye conductive ndima inoumba mukati mezvinhu → vhoriyamu resistivity inodonha zvakanyanya, insulation yakaparadzwa zvachose |
Kutadza kuzere - conductive nzira fomu |
Yambiro yakakosha: Kunyangwe base fiberglass jira rinomira 550-750 ° C risati rapfava, isina kuvharwa fiberglass inotora hunyoro mushure mePTFE yekuvharira kutadza uye haigone kushanda yakazvimiririra kune yakakwira-voltage insulation.
Low-Temperature Range: Pazasi 0°C - Yakavandudzwa Magetsi asi Brittle Mechanical
Property |
Mhedzisiro iri pasi pe0°C |
Kushanda Kureva |
Volume resistivity |
Kuwedzera - yakadzika tembiricha inokiya ma molecular cheni kufamba, inotadzisa mutakuri kufamba |
Kuiswa kwemagetsi kuri nani pane kudziya kwekamuri |
Dielectric simba |
Kuwedzera - zvinhu zvinoramba kuparara |
Yakanakira cryogenic insulation application |
Mechanical flexibility |
PTFE inopinda crystal phase transition pa ~19°C; inoita brittle zviri pasi -79°C |
Kupeta kana kukanganisa kunogona kutsemuka PTFE coating → inogadzira kukanganisa kwekudzivirira |
Kiyi yekutora: Kunyangwe yakagadziridzwa magetsi ekudzivirira pakudziya kwakaderera, iyo PTFE coating inova brittle. Zvekushandisa cryogenic (semuenzaniso, mitsara yenitrogen yemvura, superconducting magineti), ita shuwa kuti jira haripindirwe pakukotama kana kushushikana kwemagetsi pazasi -79 ° C. Kana yatsemuka, kutendeseka kwekudzivirira kunorasika zvisinei nemagetsi emagetsi.
Pfupiso – Gara Mukati 260°C nokuda Kwakavimbika Insulation
Temperature Range |
Insulation Performance |
Mechanical State |
Kurudziro |
-180°C kusvika 260°C |
Yakanakisa - yakagadzikana, yakakwirira resistivity, yakaderera kurasikirwa |
Inochinjika (tarisa brittleness pazasi -79°C) |
Yakachengeteka kuti irambe ichishandiswa |
260°C – 327°C |
Kushatisa - kupfava kupfava kunogona kukanganisa / kuboora |
Kupfava |
Kusavimbika - dzivisa kuratidzwa kwakasimba |
327°C – 400°C |
Pedyo nekukundikana - kunyunguduka, kurasikirwa kwemaitiro |
Gel/mvura |
Kwete zvekushandisa magetsi |
>400°C |
Kukundikana zvachose - carbonization inogadzira nzira dzinofambisa |
Decomposed |
Njodzi - chinja pakarepo |
Muchidimbu , mukati metembiricha inoenderera inokurudzirwa kushanda (≤260°C), tembiricha inokonzeresa kukanganisa kwakashata paPTFE high-temperature yemagetsi ejira. Volume resistivity inoramba iri pamusoro pe10⊃1;⊃3; Ω·cm pa200°C; dielectric nguva dzose inogara pa 2.0-2.1; dissipation factor pazasi 0.001. Izvi zvinoita kuti PTFE ive imwe yemhando yakagadzikana yepamusoro-tembiricha inodzivirira inowanika - kunyanya yakakosha kune yakakwirira-frequency application apo mamwe mapolymer anotambura kurasikirwa kukuru.
Kana yanyanya kupisa kupfuura 260 ° C, kutadza kwekudzivirira kunotanga kubva mukunyorovesa kwemuchina uye deformation, inozopedzisira yashanduka kuita kuparara kwemagetsi. Pamusoro pe400 ° C, carbonization inogadzira nzira dzechigarire conductive. Pazasi pe 0 ° C, zvinhu zvemagetsi zvinovandudza, asi brittleness yemuchina ine njodzi yekupwanya coating.
Unoda PTFE yakakwirira-tembiricha jira rine yakavimbiswa insulation zvimiro zvetembiricha yako renji? Aokai PTFE inopa yakazara dielectric test data kubva -70°C kusvika 260°C. Bata nesu tembiricha yako yekushandisa, voltage, uye frequency zvinodiwa.
Iyo yepamusoro data data inopihwa ne Jiangsu Aokai New Materials Technology Co., Ltd.
Kana iwe uchida humwe hutekinoroji hwehunyanzvi, mhinduro dzemashandisirwo, uye kugadzirwa kwakagadziridzwa kwezvizere-mhando zvigadzirwa zvinosanganisira PTFE yakakwirira-tembiricha jira, PTFE adhesive tepi, PTFE mesh conveyor bhandi, isina musono fusing muchina bhandi, rimwe-side rakavharidzirwa PTFE jira uye yakakwirira-tembiricha isingachinjiki & fiberglass jira , tapota taura nesu:
Isu tinoomerera kune hunyanzvi uye kutendeseka kuendesa imwe-stop yakagadzirirwa maindasitiri mhinduro uye inofunga mushure mekutengesa-rutsigiro.
