Sɛnea Ɔhyew Ka Electrical Insulation of PTFE High-Temperature Cloth

Wɔde PTFE ntama a ɛyɛ hyew kɛse di dwuma kɛse sɛ anyinam ahoɔden a wɔde siw ano wɔ waya a wɔde hyɛ mu, transformer layers, motor windings, ne frequency a ɛkorɔn mu. Nanso ɔhyew mu nsakrae – efi awɔw a ɛyɛ nwini so kosi ɔhyew a ano yɛ den so – sesa ne suban a ɛbɔ ho ban. So wubetumi de wo ho ato PTFE ntama a ɛwɔ 200°C so? Dɛn na ɛba wɔ soro 260°C?

Mmuae no yɛ nea ɛyɛ nuanced. PTFE molecule nhyehyɛe ma ɛyɛ insulation a ɛda nsow wɔ ne dwumadibea dodow no ara mu, nanso boro 260°C kanyan ɔsɛe a wontumi nsakra. Na bere a awɔw bere ma anyinam ahoɔden tumi tu mpɔn no, ɛma nea wɔde kata so no yɛ mmerɛw.

Aokai PTFE asɔ insulation ahoɔden ahwɛ wɔ ɔhyew a ɛboro so nyinaa mu. Saa asɛm yi kyekyɛ adwumayɛ mu abiɛsa: adwumayɛ a ɛfata (-180°C kosi 260°C), ɛkorɔn kɛse (>260°C), ne ɔhyew a ɛba fam (<0°C), a nsɛm atitiriw a ɛfa resistivity, dielectric ahoɔden, ne nea ɛkyerɛ mfaso ho.

Normal Operating Range: -180 ° C kosi 260 ° C – Insulation a ɛyɛ den yiye

Wɔ saa kwan yi mu no, PTFE ntama a ɛyɛ hyew kɛse kura anyinam ahoɔden a ɛda nsow na ɛyɛ den mu – mfaso titiriw a ɛboa ne mfiridwuma mu dwumadie a ɛtrɛw.

1. Volume & Ɔfa so Resistivity

Adwinnade: Resistivity so tew kakra bere a ɔhyew kɔ soro efisɛ ɔhyew a ɛkɔ soro ma ɔhyew kankan a PTFE molecule nkɔnsɔnkɔnsɔn no mu yɛ den na ɛma trace impurity carriers tu ntɛmntɛm. Nanso, sɛ ɛyɛ 200°C mpo a, PTFE yɛ adwuma sen mfiridwuma mu plastic dodow no ara wɔ dan mu hyew mu.

Hyɛ no nsow wɔ ɔfasu a ɛko tia ho: Nneɛma a ɛwɔ soro a ɛko tia no yɛ nea ɛyɛ mmerɛw kɛse sɛ ɛhɔ yɛ nwini. Ɛkame ayɛ sɛ PTFE nyɛ nea ɛma nsu yɛ hyew; nsu a ɛwɔ soro no yɛ nwini wɔ ɔhyew a ɛkɔ soro mu, na ɛma nneɛma a ɛwɔ soro a ɛyɛ den sɛ ɛbɛbɔ ho ban sen dan mu tebea horow a ɛhɔ yɛ nwini kɛse mu.

2. Dielectric Ahoɔden (Breakdown Voltage) .

• Ɛtew bere a ɔhyew kɔ soro no. Molekyul ahorow a ɛyɛ hyew a ɛkɔ soro no ma ade no yɛ mmerɛw kɛse sɛ anyinam ahoɔden bɛsɛe.

• Efi dan mu hyew kosi 200°C, bere tiaa mu dielectric ahoɔden so tew bɛyɛ 20%–40% ..

• Ɛno mpo no, ntama a ɛyɛ fɛ a ne kɛse bɛyɛ mm 0.1 da so ara gyina kilovolts pii ano (anaasɛ kilovolt du du ma grades a ɛyɛ den) wɔ 200°C – robust insulation capacity retained.

3. Dielectric Daa & Dissipation Factor – Nsakrae a ɛba fam koraa

Nea enti a eyi ho hia: PTFE no molecule nhyehyɛe a ɛyɛ symmetric kɛse ne polarization a ɛba fam yiye no ma wonya awerɛhyem sɛ wɔde nsɛnkyerɛnne a ɛyɛ den bɛma ne ɔhyew a ɛba fam koraa wɔ ɔhyew a ɛkorɔn & ɔhyew a ɛkorɔn som ase. Eyi ma PTFE fata sɛ ade a eye a ɛbɔ ho ban a ɛwɔ frequency a ɛkorɔn ma RF ne microwave dwumadie.

Aokai PTFE ntama a ɛyɛ hyew a ɛkorɔn no yɛ nea adetɔfo akyerɛ ama transformer insulation a ɛyɛ frequency a ɛkorɔn esiane ne Dk a ɛyɛ den (2.05±0.05) ne tanδ a ɛba fam yiye (0.0002-0.0005) wɔ -50°C kosi 200°C ntam nti. Yɛde dielectric agyapade sɔhwɛ amanneɛbɔ ma bere a wɔabisa no.

Ɔhyew a Ɛkorɔn Kɛse: Ɛboro 260°C – Ɔsɛe a Ɛntumi Nsakra

Sɛ ɛboro PTFE bere tenten a wɔma ho kwan wɔ ɔsom mu hyew so a, ɛkanyan honam fam ne nnuru a wɔsɛe no a wontumi nsakra – ɛnyɛ agyapade mu nsakrae a wotumi dannan.

Kɔkɔbɔ a ɛho hia: Ɛwom sɛ fiberglass ntama a ɛwɔ nnyinaso no gyina 550-750°C ano ansa na ayɛ mmerɛw de, nanso fiberglass a ɛda hɔ kwa a wɔmfa nkata so no twetwe nsu ntɛm ara wɔ PTFE a wɔde akata so no adi nkogu akyi na entumi mfa ne ho nyɛ adwuma mma ahoɔden a ɛkorɔn a wɔde siw ano.

Low-Temperature Range: Below 0°C – Electrical a wɔatu mpɔn nanso ɛyɛ Brittle Mechanical

Nneɛma titiriw a wɔde kɔ: Ɛmfa ho sɛ wɔama anyinam ahoɔden a wɔde siw ano no ayɛ kɛse wɔ ɔhyew a ɛba fam mu no, PTFE a wɔde kata so no bɛyɛ nea ɛyɛ mmerɛw. Sɛ wopɛ sɛ wode cryogenic di dwuma (sɛ nhwɛso no, nsu nitrogen nhama, superconducting magnets), hwɛ hu sɛ ntama no mfa nkɔtoto a ano yɛ nnam anaa mfiri nhyɛso a ɛba fam sen -79°C. Sɛ ɛpaapae wie a, insulation no mudi mu kura yera a anyinam ahoɔden su mfa ho.

Nsɛm a Wɔaboaboa Ano – Tena 260°C mu ma Insulation a Wotumi De Ho To So

In summary , wɔ adwumayɛ ɔhyew a wɔkamfo kyerɛ a ɛkɔ so (≤260°C) mu no, ɔhyew de nkɛntɛnso bɔne a ɛnyɛ hwee ba PTFE ntama a ɔhyew kɛse wom no anyinam ahoɔden a wɔde siw ano no so. Volume resistivity da so ara boro 10⊃1;⊃3; Ω·cm wɔ 200°C mu; dielectric daa tra 2.0-2.1; dissipation factor a ɛba fam sen 0.001. Eyi ma PTFE yɛ nneɛma a ɛma ɔhyew a ɛkorɔn a ɛyɛ den sen biara a ɛwɔ hɔ no mu biako – ɛsom bo titiriw ma nneɛma a wɔde di dwuma mpɛn pii a polymers afoforo hwere ade kɛse.

Sɛ ɛyɛ hyew dodo boro 260°C pɛ a, insulation no huammɔdi fi ase fi mfiri a ɛyɛ mmerɛw ne nea ɛsakra mu, na awiei koraa no ɛdan anyinam ahoɔden a ɛpaapae koraa. Sɛ ɛboro 400°C a, carbonization ma akwan a ɛkɔ so daa ba. Wɔ 0°C ase no, anyinam ahoɔden su tu mpɔn, nanso mfiri a ɛyɛ mmerɛw no de asiane ba sɛ ɛbɛpaapae ade a wɔde kata so no mu.

Wohia PTFE ntama a ɛyɛ hyew kɛse a ɛwɔ ahotoso sɛ ɛwɔ insulation properties ma wo temperature range? Aokai PTFE de dielectric sɔhwɛ data a edi mũ ma fi -70°C kosi 260°C. Fa wo dwumadie hyew, ahoɔden, ne frequency ahwehwɛdeɛ di yɛn ho nkɔmmɔ.

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