PTFE Emulsion Coated Fiberglass Ntama – Sintering Kura Bere a Wɔhwehwɛ

Sintering yɛ anammɔn a ɛho hia a PTFE nneɛma nketenkete no nwene, ɛsen, na ɛfrafra ma ɛyɛ sini a ɛkɔ so na ɛyɛ den a ɛkyekyere fiberglass substrate no. Sɛ bere a wɔde kura mu no yɛ tiaa dodo a, ade a wɔde kata so no kɔ so yɛ porous na ɛyɛ mmerɛw. Sɛ ɛware dodo a, PTFE no sɛe, na ɛma mframa a awuduru wom fi mu na ɛdan mmerɛw.

Parameter titiriw ne bere a wɔde kura mu – bere tenten a akyi a coating bulk no adu sintering temperature (mpɛn pii no 370-400°C). Eyi nyɛ bere a fononoo no yɛ hyew ara kwa; ɛyɛ bere a ntama no ankasa boro baabi a ɛyɛ hyew no so.

Aokai PTFE ayɛ sintering parameters a ɛyɛ papa wɔ nneɛma pii mu. Saa akwankyerɛ yi fa bere a wɔde kura mu a wɔhwehwɛ ma fononoo ahorow ahorow, nneɛma atitiriw a ɛwɔ nkɛntɛnso, ne sintɔ ahorow a efi bere a ɛnsɛ mu ba ho asɛm.

Nnyinasosɛm Titiriw – Nea 'Bere a Wɔkura' Kyerɛ Ankasa

1. Atirimpɔw titiriw

Sɛnea ɛbɛyɛ a PTFE asinasin no betumi ayow koraa, asen, na ayɛ biako asen wɔn nwene (bɛyɛ 327°C ), na ayɛ sini a ɛkɔ so na ɛyɛ den a ɛma mfiri a ɛne fiberglass substrate no di nkitaho denneennen.

2. Nsonsonoe a ɛyɛ katee

Bere a wɔde kura mu no kyerɛ bere tenten a ɛkɔ so bere a ade a wɔde kata so no kɛse adu sintering temperature (mpɛn pii no 370-400°C) akyi, sen bere tenten a fononoo no hyew kɔ so yɛ pɛ ara kwa.

Ɛho hia sɛ wɔhwɛ hu sɛ fiberglass ntama no mu duru nyinaa (a resin a ɛkyere nhama a ɛwɔ mu ntam ka ho) no du ɔhyew a ɛrewosow no ho na akura mu bere a ɛfata. Ɔhyew a ɛwɔ soro nkutoo nnɔɔso – ɛsɛ sɛ emu ntoatoaso no nso nwene.

Reference Ranges ma Nneɛma a Wɔtaa Yɛ

1. Fononoo a wɔde sintering kɔ so

Fononoo mu ɔhyew nhyehyɛe: Ɔhyew a ɛwɔ mmeae pii a wɔde beae a ɛhɔ yɛ hyew kɛse no asi hɔ sɛ 380-400°C (ɛkɔ 410°C ma nnuru ahorow bi a wɔayɛ no sɛnea wɔpɛ).

Bere a etu mpɔn a wɔde tra (bere a wɔde kura mu) wɔ beae a ɛhɔ yɛ hyew kɛse:

Nsakraeɛ a mfasoɔ wɔ so: Tune line ahoɔhare a egyina fononoo tenten so – tew ntama akwantuo ahoɔhare so na ama ɔhyew a ɛkorɔn tena bere.

2. Batch (adaka-su) sintering fononoo

Kura ɔhyew a ɛkɔ so daa wɔ 380-390°C bere a woayɛ hyew awie no:

Nkaebɔ: Adaka mu fononoo ahorow hu amane wɔ ɔhyew nkyekyɛmu a ɛnteɛ mu. Mframa a ɛkyinkyini ahoɔhare kɛse ho hia, na ɛsɛ sɛ wɔtrɛw bere a wɔde kura mu no mu sɛnea ɛfata na wɔakwati sɛ emu ntoatoaso no renhyew.

Nneɛma Titiriw a Ɛkyerɛ Bere a Wɔde Kura

Nneɛma atitiriw anum di nkitaho de kyerɛ bere a eye sen biara a wɔde kura ade pɔtee biara mu.

1. Fiberglass ntama no mu duru ne ne mu duru

Ntama a ɛyɛ den na emu yɛ duru no ntumi nkɔ mu yiye na ɛhwehwɛ sɛ wɔde bere tenten kura mu ansa na ɔhyew akɔ mfinimfini.

2. Coating twam ne PTFE adesoa

Nneɛma pii a wɔde kata so no ma ɛyɛ resin sini a ɛyɛ den a ehia sɛ wɔma ɛyɛ hyew bere tenten na ama nea wɔde kata ase no ayɛ mmerɛw koraa. Nneɛma a wɔde kata so a ɛyɛ tratraa biako ma bere tiaa a wɔde kura mu.

3. PTFE emulsion a wɔde yɛ adwuma

• Pure PTFE emulsions – hwehwɛ sɛ sintering hyew a ɛkorɔn ne bere a ɛdɔɔso a ɛtra hɔ

• Modified blends (a wɔde PFA anaa FEP afra) – da melt flow a ɛkorɔn adi na ɛma kwan ma bere tenten a wɔde kura mu no so tew

4. Sintering ɔhyew

• Ɔhyew a wɔahyɛ a ɛkorɔn (sɛ nhwɛso no, 400°C) – ma bere a wɔhwehwɛ sɛ wɔde kura mu no yɛ tiaa

• Ɔhyew a ɛbɛn anohyeto a ɛba fam (370°C) – hia ɔhyew a ɛkyɛ

• kari 380-390°C mfɛnsere no pɛ wɔ nneɛma a wɔyɛ no yiye ne PTFE a ɛsɛe asiane

5. Fononoo nhyehyɛe ne mframa a ɛyɛ hyew ahoɔhare

• Fononoo a mframa a ɛyɛ hyew di akɔneaba ntɛmntɛm anaasɛ infrared hyɛn mu – ɔhyew a ɛkɔ so yiye, bere tiaa a wɔde kura mu

• Fononoo a wɔde wɔn ho to ɔhyew a ɛhyerɛn nkutoo so – ɛhwehwɛ sɛ wɔde bere tenten tra hɔ

Mfomso Ahorow a Bere a Ɛmfata a Wɔde Nkura Mu De Ba

1. Bere a ɛnnɔɔso a wɔde kura mu (under-sintering) .

Nhwehwɛmu: Nhwehwɛmu a wɔde aniwa hu (fitaa a ɛnyɛ hann, ɛyɛ grainy), teyp twetwe sɔhwɛ (peeling), cross-section nhwehwɛmu (fitaa a ennya nwene wɔ mu).

2. Bere tenten a wɔde kura mu (over-sintering) .

Nhwehwɛmu a wɔde aniwa hu (ɛyɛ kɔkɔɔ, nsensanee a ɛyɛ hyew), brittleness test (mpaapaemu bere a wɔabɔ no), hua a wohu (hua a ɛyɛ yaw kyerɛ sɛ aporɔw).

Nhwehwɛmu Gyinapɛn a Ɛyɛ Mfaso ne Afotu a Wɔde Ma Wɔ Nneɛma a Wɔyɛ no Yiye

1. Fa ɔhyew-bere curves si hɔ

Fa di dwuma fononoo mu hyew tracker de kyerɛw ntama no ani hyew bere ankasa na hwɛ sɛ bere tenten a etu mpɔn a ɛbɔ sen 370°C no yɛ nokware. Eyi ne ɔkwan a wotumi de ho to so sen biara a wɔfa so si bere ankasa a wɔde kura mu so dua.

2. Aniwa so nhwehwɛmu a wɔyɛ wɔ onyin ho

PTFE coatings a wɔayɛ no sintered koraa a ɛwɔ hɔ:

• Uniform semi-transparent to fully transparent anim (ɛsono sɛnea ne kɛse te) .

• Nneɛma nketenkete a wɔanwene a ɛte sɛ chalky biara nni hɔ

• Ɛyɛ mmerɛw sɛ wobɛka (ɛnyɛ den anaasɛ ɛyɛ mmerɛw) .

3. Adhesion sɔhwɛ

No peeling anaa powder nkae akyi tape twetwe sɔhwɛ anaasɛ mpɛn pii bending (bobɔ/bue mpɛn 5-10).

4. Cross-section nhwehwɛmu a ɛsɛe ade

Ntama a wɔatwa no ntwemu kyerɛ:

• Nneɛma fitaa a ennyaa nsunsuanso biara nni mu

• Fiberglass nhama ayɛ nsu koraa a wɔde PTFE resin a wɔabɔ no

5. Ahobammɔ ho nhyehyɛe ne ɔhyɛ a wɔhyɛ ma onwini

• Hwɛ mframa a ano yɛ den a ɛkɔ mframa mu no mu na amma awuduru a ɛbɛboaboa ano (perfluoroisobutylene, HF) afi PTFE a ɛporɔw mu no ano

• Strictly cap maximum ɔhyew ne bere a wɔde kura mu

• Ntɛm ara fa ntama kɔ beae a wɔhyɛ ma onwini wɔ ɔfã a ɛyɛ hyew kɛse no akyi ma ɛnnwo wɔ 300°C ase ntɛmntɛm – onwini a ɛba ntɛmntɛm boa ma wɔto fused microstructure no mu

Nsɛm a Wɔaboaboa Ano – Nkyerɛkyerɛmu Ntɛmntɛm Kura Bere Akwankyerɛ

Mmara titiriw: Fa bere a ɛba fam koraa a wogye tom a wɔde kura mu a ɛhwɛ hu sɛ coating no bɛbɔ koraa, ayɛ leveling, na zero unmelted inner cores – na ama ɔhyew a ɛsɛe asiane no so atew.

Aokai PTFE de sintering nhyehyɛe mmoa a ɔhyew akyi di, cross-section nhwehwɛmu, ne parameter optimization ka ho ma. Di yɛn ho nkɔmmɔ na woanya mfiridwuma ho mmoa.

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