Nnuru Bɛn na Ebetumi Asɛe PTFE Ntama a Ɛho Hia Kɛse?

PTFE agye din wɔ ne nnuru a ɛnyɛ adwuma – wɔtaa frɛ no 'King of Plastics.' Ɛkame ayɛ sɛ ɛko tia acid, alkalis, ne solvents nyinaa wɔ dan mu hyew mu. Nanso, 'ɛkame ayɛ sɛ ne nyinaa' nyɛ 'ne nyinaa.' Wɔ tebea a emu yɛ den mu – ɔhyew a ɛkɔ soro, dodow a ɛkɔ soro, anaasɛ ɛwɔ tebea a ɛyɛ nwini mu – nnuru bi tumi tow hyɛ PTFE so. Na sɛ PTFE ankasa tra ase mpo a, ebia fiberglass a ɛwɔ ase no bɛyɛ mmerɛw sɛ nea wɔde akata so no wɔ sintɔ ahorow a.

Saa anohyeto ahorow yi ntease ho hia kɛse ma PTFE ntama a wɔpaw wɔ nnuru a emu yɛ den mu.

Aokai PTFE asɔ ntama a wɔde PTFE akata so ahwɛ wɔ nnuru a ano yɛ den ho. Saa akwankyerɛ yi kyerɛkyerɛ nea ɛsɛe PTFE tẽẽ, nea ɛtow hyɛ fiberglass substrate no so, ne sɛnea wɔkwati huammɔdi mu.

Sɛnea Corrosion Ba – Akwan Abien

PTFE ntama a ɛyɛ hyew kɛse no wɔ afã abien: PTFE a wɔde kata so (a ɛyɛ tratraa, ɛnyɛ nea ɛbata ho, nea nnuru ntumi nyɛ adwuma) ne fiberglass substrate (ɛma ahoɔden nanso ɛyɛ mmerɛw sɛ nnuru bi bɛka ho). Nneɛma abien so na nsɛe ba:

1. Direct erosion a PTFE a wɔde kata so no

Eyi ba wɔ tebea horow a emu yɛ den mu nkutoo – ɔhyew a ɛkɔ soro, dodow a ɛkɔ soro, anaasɛ wɔ tebea a ɛyɛ nwini mu. Wɔ dan mu hyew mu no, ɛkame ayɛ sɛ PTFE ntumi nkɔ nnuru ntua tẽẽ.

2. Corrosion a fiberglass substrate denam coating sintɔ ahorow so

Nnuru hyɛn pinholes, scratches, anaa micro-cracks a ɛwɔ PTFE coating no mu na ɛtow hyɛ glass fibers no so. Ebia PTFE no ankasa da so ara yɛ fɛ, nanso ntama no hwere mfiri ahoɔden na ebetumi atetew ntɛmntɛm. Eyi yɛ huammɔdi kwan a ɛtaa ba bere a ade a wɔde kata so no asɛe no.

Nnuru a Ɛtow hyɛ PTFE Coating so Tẽẽ

Saa nneɛma yi ne PTFE ankasa yɛ adwuma, nanso wɔ tebea horow a emu yɛ den mu nkutoo.

1. Molten alkali metals – nea ɛyɛ nea wɔtaa yɛ sen biara

Sodium (Na), potassium (K), ne lithium (Li) a wɔanwene no yi fluorine atɔm fi PTFE mu, na ɛma carbonization, kɔla tuntum sesa, na ɛma nneɛma no ani yɛ powder. Sodium-naphthalene aduru a wɔde yɛ PTFE etching no yɛ adwuma wɔ nnyinasosɛm yi so.

• Nkɛntɛnso: PTFE nhyehyɛe a wɔsɛe no koraa.

• Tebea horow: Alkali dade a wɔanwene (a ɛboro wɔn nwene so, s.e., Na a ɛwɔ 98°C) biara a wɔde bɛhyɛ mu.

• Nyansahyɛ: Kwati koraa. Fa PTFE sini a ɛho tew di dwuma sɛ ɛho hia koraa nkutoo a, na saa bere no mpo fa ahwɛyiye di dwuma.

2. Nneɛma a ano yɛ den a ɛma fluorin wɔ ɔhyew a ɛkɔ soro mu

Saa nneɛma yi betumi asɛe PTFE bio wɔ ɔhyew a ano yɛ den mu:

• Fluorine gas (F2): Ɛma nsɛe nkakrankakra wɔ ɔhyew ne nhyɛso a ɛkɔ soro mu.

• Interhalogen fluorides: Nnuru a ɛyɛ adwuma kɛse te sɛ chlorine trifluoride (ClF3) ne bromine pentafluoride (BrF5) betumi ama PTFE ayɛ adwuma denneennen anaasɛ ɛbɛhyew mpo wɔ ɔhyew a ɛkɔ soro mu.

• Fluoride a ɛyɛ den a ɛma ɔhyew: Sɛ nhwɛso no, xenon difluoride (XeF2).

Nyansahyɛ: Ma PTFE ntama no ntwe ne ho mfi nnuru yi ho, titiriw wɔ ɔhyew a ɛkɔ soro mu.

3. Nwene alkali a ɛyɛ den wɔ ɔhyew a ɛkɔ soro mu

Sodium hydroxide (NaOH) a ayow ne potassium hydroxide (KOH) de nkakrankakra sɛe PTFE no ani boro 300°C, na ɛma nsu a ɛyɛ hu ne nea ɛwɔ soro no hyerɛn. Wɔ 300°C ase no, PTFE gyina alkali ano yiye. Wɔ dan mu hyew mu no, enni nkɛntɛnso biara.

4. Reactive dade powders wɔ ɔhyew a ɛkorɔn

Magnesium powder (Mg), aluminium powder (Al), ne nneɛma a ɛtete saa ne PTFE yɛ adwuma denneennen wɔ ɔhyew a ɛkɔ soro mu, na ɛma dade fluoride ne carbon ba. Eyi ne nea wogyina so yɛ nneɛma bi a wɔde ogya hyew ne nea wɔde hyew nneɛma a PTFE wom.

Nnuru a Ɛtow hyɛ Fiberglass Substrate no so denam Coating Mfomso so

Saa nnuru yi ne PTFE nyɛ adwuma, nanso sɛ PTFE a wɔde kata so no wɔ pinhole, scratch, anaa edge exposure biara a, ɛbɛhyɛn fiberglass no mu na asɛe.

1. Hydrofluoric acid (HF) – nea ɛyɛ hu sen biara

Hydrofluoric acid sɛe fiberglass kɛse. Ɛne silicon dioxide (ade titiriw a ɛwɔ ahwehwɛ mu) yɛ adwuma ntɛmntɛm ma ɛyɛ silicon tetrafluoride mframa, na ɛma ahwehwɛ nhama no tew.

• PTFE ankasa ko tia HF pɛpɛɛpɛ – wɔtaa de PTFE di dwuma ma HF di dwuma mfiri.

• Nanso, ntama a wɔde PTFE akata so no NNYƐ ahobammɔ mma HF gye sɛ nea wɔde akata so no nni pinhole koraa (a ɛyɛ den yiye sɛ wɔbɛma ho awerɛhyem). Mfomso biara bɛma HF akɔ fiberglass no mu, na ama ntama no asɛe ntɛmntɛm.

• Nyansahyɛ: Sɛ wopɛ HF som a, fa PTFE film a ɛho tew (fiberglass reinforcement biara nni mu) anaa PTFE liner a wɔakata so koraa a pinholes a wɔagye atom sɛ zero no di dwuma.

2. Alkali a wɔahyɛ no den wɔ ɔhyew a ɛkɔ soro mu

Sodium hydroxide (NaOH) aduru a ɛyɛ den kɛse wɔ ɔhyew a ɛkɔ soro mu no betumi asɛe fiberglass denam sintɔ a ɛwɔ nea wɔde kata so no so. Alkali a ɛyɛ hyew a ɛwɔ dan mu no yɛ nea asiane biara nni ho.

3. Phosphoric acid a wɔahyɛ no den wɔ ɔhyew a ɛkɔ soro mu

Sɛ wɔde phosphoric acid a ɛyɛ hyew a wɔahyɛ no den di nkitaho bere tenten a, ɛbɛma fiberglass no asɛe. Bio nso, PTFE ankasa ko tia, nanso sintɔ ahorow a ɛwɔ ade a wɔde kata so no ne ade a ɛyɛ mmerɛw.

Nkaebɔ a Ɛho Hia ma Nnuruyɛ Dwumadibea

1. Mmirikatu dodow no ara fi mfiri a ɛsɛe anaasɛ ɔhyew a ɛyɛ onyin, na ɛnyɛ nnuru ntua

Wɔ mfiridwuma mu nneɛma a wɔtaa de di dwuma (nnuruyɛ mfiri, aduan a wɔyɛ, ne nea ɛkeka ho) mu no, PTFE ntama no di nkogu esiane sɛ ɛyɛ mmerɛw, ɛtetew, anaa ɔhyew a ɛsɛe bere tenten ansa na nnuru a wɔde yɛ nneɛma a ɛyɛ fĩ abɛyɛ asɛm. Ɛkame ayɛ sɛ nnuru a PTFE ntumi nyɛ adwuma no yɛ nokware na wotumi de ho to so ma nnuru a wɔtaa de di dwuma nyinaa a ɛkɔ soro kodu 260°C.

2. Sɛ ɛsɛ sɛ wudi nnuru a ano yɛ den ho dwuma a, fa PTFE sini a ɛho tew di dwuma

Wɔ nneɛma a ɛfa alkali dade a wɔanwene, HF a ɛyɛ hyew a wɔahyɛ no den, anaa nneɛma a ano yɛ den a ɛma fluorin ho no, wɔmfa fiberglass a wɔde PTFE akata so nkyerɛ . Mmom no, fa:

• PTFE sini a ɛho tew (skived anaa cast) a enni fiberglass a wɔde hyɛ mu den

• PTFE-lined dade mfiri

• PFA anaa FEP (fluoropolymers afoforo a ɛwɔ ahoɔden a ɛte saa ara nanso ɛsono mfiridwuma mu su) .

3. Sɔ hwɛ bere nyinaa ansa na wode adi dwuma koraa

Sɛ wo application no fa nnuru a wɔankyerɛw sɛ 'ahobammɔ' wɔ standard compatibility charts mu a, yɛ nneɛma a ɛne ne ho hyia sɔhwɛ wɔ adwumayɛ tebea ankasa mu (ɔhyew, dodow, bere tenten). Aokai PTFE betumi de sɔhwɛ nhwɛsode ama de agye atom.

Nsɛm a wɔaboaboa ano – Nnuru a ɛne ne ho hyia Ntɛmntɛm Nhwehwɛmu

Aokai PTFE de nnuru a ɛne ne ho hyia akwankyerɛ ma na ebetumi akamfo ade a ɛfata akyerɛ – ntama a wɔde PTFE akata so ma dwumadie dodoɔ no ara, anaa PTFE sini a ɛho tew ma nnuru som a ɛyɛ den. Di yɛn ho nkɔmmɔ na fa wo nnuru pɔtee, ɔhyew, ne bere a wode bɛhyɛ mu.

Atifi hɔ nsɛm no yɛ nea wɔde ama Jiangsu Aokai Nneɛma Foforo Mfiridwuma Co., Ltd.

Sɛ wopɛ sɛ wusua pii fa nsɛm a ɛkɔ akyiri, dwumadie tebea ne ano aduru a wɔayɛ ama yɛn nneɛma nyinaa, a PTFE ntama a ɛyɛ hyew a ɛkorɔn, PTFE teapɔn a ɛyɛ hyew kɛse, PTFE mesh abɔso, seamless bonding machine belts, PTFE ntama a ɛwɔ afã biako, conveyor belts a ɛko tia ɔhyew a ɛkorɔn ne fiberglass a ɛko tia ɔhyew a ɛkorɔn ka ho ntama, yɛsrɛ sɛ wo ne yɛn nni nkitaho:

• Owura Guo: +86 18944819998

• Owura Liu: +86 13705266308 akyerɛw

Yɛkura nyansapɛ a ɛfa adwumayɛ ne nokwaredi ho bere nyinaa, na yɛasi yɛn bo sɛ yɛde ano aduru a ɛwɔ baabi biako ne nnwuma a wosusuw ho bɛma wo.