Sɛnea Nneɛma a Wɔde Yɛ Ayaresa a Ɛwɔ Anim no Sesa Ntama a Ɛwɔ Ɔhyew a Ɛkorɔn wɔ PTFE Ntama a Ɛwɔ Ɔhyew So no Fam Nhyehyɛe

PTFE ntama a ɛyɛ hyew kɛse esiane sɛ ɛnyɛ nea ɛbata ho, ɛko tia ɔhyew, na ɛko tia nsɛe nti. Wɔsom Nanso ɔfasu koro no ara a ɛyɛ mmerɛw yiye, ahoɔden kakraa bi na ɛwɔ soro, na nnuru ntumi nyɛ adwuma a ɛma ɛyɛ nea eye ma nneɛma a wɔde gyae nneɛma no nso ma ɛkame ayɛ sɛ ɛrentumi nyɛ yiye sɛ wɔbɛkyekyere, atintim, anaa wɔayɛ no laminate.

Ano aduru no ne ɔfasuo ayaresa – engineering nyinaa microstructure ne nnuru a ɛwɔ PTFE soro no dane no firi non-bondable kɔ bondable.

Aokai PTFE de PTFE ntama a ɛwɔ soro ayaresa akwan horow ma. Saa akwankyerɛ yi kyerɛkyerɛ akwan anan a wɔtaa fa so – chemical etching, plasma treatment, corona treatment, ne laser treatment – ​​ne sɛnea emu biara sesa ɔfasu no honam fam ne nnuru mu.

Nnuru a Wɔde Kyerɛw Nsɛm (Sodium-Naphthalene Nnuru a Wɔde Yɛ Aduru) .

Saa wet-treatment kwan yi de nkɛntɛnso a ɛtra hɔ kyɛ sen biara ma na ehu sɛnea wɔde di dwuma kɛse sen biara ma PTFE bonding.

1. Honam fam nhyehyɛe mu nsakrae

Sodium-naphthalene complex solution no etches PTFE ani denam fluorine atɔm a ɛyi fi soro-fam layer no so. Wɔde amena ne abura a enni ano a ɛyɛ micron kosi nanoscale a ɛte sɛ ɛwo anaa akorade akyerɛw so a mfiase no na ɛyɛ ahwehwɛ te sɛ ahwehwɛ no. Saa roughening yi ma beae pɔtee a ɛwɔ soro no yɛ kɛse kɛse na ɛma mfiri a ɛka bom yɛ anchor points ma adhesives.

2. Nnuru nhyehyɛe mu nsakrae

Eyi ne nsakrae titiriw no. Sodium a ɛtew so denneennen no yi fluorine atɔm fi PTFE carbon akyi dompe no mu, na ɛma carbon nkɔnsɔnkɔnsɔn a enni ma ne free radicals. Saa mmeae a ɛyɛ adwuma yi ne nsu ne oxygen a ɛwɔ mframa anaa aduru a atwa yɛn ho ahyia mu no kɔ so yɛ adwuma, na ɛde polar dwumadi akuw a carbonyl (C=O), hydroxyl (-OH), ne carboxyl (-COOH) ka ho ba . Saa bere yi nyinaa, carbon a ɛwɔ soro no kɔ soro na nea wɔayɛ ho adwuma no dan bruu tuntum anaa bruu tuntum.

3. Nea efi mu ba

Wɔyɛ ade a ɛyɛ adwuma a ɛte sɛ carbonized. Ahoɔden a ɛwɔ soro no kɔ soro fi nea ennu 20 dyn/cm ma PTFE kronkron a wɔansiesie no kodu nea ɛboro 40-50 dyn/cm , a ɛma wotumi ne nneɛma a wɔde nkata nsu so mpo bom tẽẽ. Saa nhyehyɛe mu nsakrae yi yɛ nea ɛtra hɔ daa . Nanso, ade a wɔayɛ ho adwuma no yɛ teateaa micron pii pɛ na ehia sɛ wɔbɔ ho ban yiye.

Plasma Ayaresa a Wɔde Yɛ Adwuma

Wɔtaa de di dwuma de yɛ adwuma fã bi anaasɛ wɔde yɛ adwuma wɔ nhama mu, na wɔkyekyɛ plasma ayaresa mu ma ɛyɛ vacuum plasma ne atmospheric-pressure plasma.

1. Honam fam nhyehyɛe mu nsakrae

Nneɛma nketenkete a ahoɔden kɛse wom (ɛlɛtrɔnik, ion, free radicals) kɔ so tow PTFE ani na ɛkanyan sputter-etching nsunsuanso. Wɔasen nanoscale roughened texture a ɛyɛ fɛ yiye wɔ soro; woyi ɔhye a ɛyɛ mmerɛw no fi hɔ a ɛnsɛe fiberglass substrate a ɛwɔ ase no. Wɔ microscope mu no, crystalline bulk-structured surface no dan kɔ amorphous micro-roughened tebea mu.

2. Nnuru nhyehyɛe mu nsakrae

Process gas na ɛkyerɛ dwumadi akuw a etwa to:

• Inert gas treatment (sɛ nhwɛso no, argon): Ɛbubu CF nkitahodi ahorow ma ɛyɛ soro free radicals ma akyiri yi grafting polar akuw

• Mframa a ɛyɛ adwuma (oxygen, ammonia): Fa hydroxyl, carbonyl, ne amino akuw gu molecule nkɔnsɔnkɔnsɔn no so tẽẽ

3. Nea efi mu ba

Wonya nano-roughened a ɛho tew na ɛyɛ nsu kɛse. The bonding-enhancing effect degrades over time , enti ɛsɛ sɛ wɔyɛ lamination wɔ plasma ayaresa akyi pɛɛ. Ne mfaso titiriw ne ultra-shallow modified layer, a ɛkame ayɛ sɛ ɛnsakra nneɛma nyinaa kɛse ne mfitiase kɔla.

Corona Ayaresa

A high-voltage discharge technique a ɛyɛ adwuma ntɛmntɛm wɔ thin-film nneɛma so nanso ɛhu amane wɔ ntɛmntɛm adwumayɛ regression.

1. Honam fam nhyehyɛe mu nsakrae

Corona a ɛma ahoɔden kɛse no ma micro-arc flashes ba. Nkɛntɛnso a efi ɛlɛtrɔnik ahoɔden kɛse mu ba no bubu PTFE molecule nkɔnsɔnkɔnsɔn, ɛma mmeae a ɛyɛ nnam, na ɛyɛ nkyerɛwee a ɛnyɛ den na ɛyɛ anifere a ɛyɛ mmerɛw. Esiane ahoɔden a ɛba fam ne bere tiaa a ɛyɛ adwuma bere a wɔde toto plasma ayaresa ho nti, corona ma ɔfasu a ɛte sɛ amoa no yɛ mmerɛw kakraa bi pɛ.

2. Nnuru nhyehyɛe mu nsakrae

Wɔyɛ ozone ne oxygen ahorow a ɛyɛ adwuma wɔ mmeae a wɔtow gu. Oxidation de hydroxyl akuw, peroxides, ne carbonyl akuw ba ma ɛma ahoɔden a ɛwɔ soro no kɔ soro kɛse.

3. Nea efi mu ba

Ayaresa no ka ɔfasu a ɛyɛ tratraa kɛse a ɛwɔ nhyehyɛe mu nsakrae a entumi nnyina, a ne tumi a ɛma nkataso yɛ kɛse no yera ntɛmntɛm nkutoo. Wɔde di dwuma titiriw sɛ bere tiaa mu in-line adhesion-promoting process. Wɔ nneɛma a ɛyɛ den a wɔahyɛ no ma te sɛ PTFE ntama a ɛyɛ hyew kɛse fam no, corona ayaresa taa ma nea ɛba fam ba bere a wɔde toto plasma ayaresa ne nnuru a wɔde kyerɛw so ho no.

Laser Ayaresa a Wɔde Yɛ Adwuma

Nsakrae a ɛyɛ pɛpɛɛpɛ wɔ soro a wɔde excimer-laser anaa femtosecond-laser mfiridwuma di dwuma.

1. Honam fam nhyehyɛe mu nsakrae

Photothermal ne photochemical nsunsuanso yɛ pɛpɛɛpɛ micron-scale array patterns daa te sɛ periodic ripples, grooves, anaa micro-pillars. Wobetumi ayɛ saa nkyerɛwee a wɔayɛ no sɛnea wɔpɛ yi pɛpɛɛpɛ ma ayɛ geometries a eye sen biara ama mfiri a wɔde bɛka nneɛma a wɔde nkata so ho.

2. Nnuru nhyehyɛe mu nsakrae

Laser photons a ahoɔden kɛse wom bubu CF nkitahodi a ahoɔden kɛse wom, na ɛkanyan mpɔtam hɔ defluorination ne carbonization. Mmeae a wɔayɛ ho adwuma no nya carbon anaa graphitic carbon a ɛte sɛ daimond a oxygen dɔɔso wom. Ultraviolet excimer laser betumi graft monomers a ɛyɛ nnam denam photochemical reactions tẽẽ a enni carbonization so.

3. Nea efi mu ba

Wɔyɛ nsakrae a ɛkɔ so bere koro mu, a wɔde wɔn ani asi so, na wɔayɛ no sɛnea ɛte wɔ honam fam nwene ne nnuru polarity mu. Wɔdan polymer a ɛnyɛ adwuma no ani ma ɛbɛyɛ nea carbon-oxygen pii wom a ɛwɔ roughness a wotumi di so ne soro ahoɔden a ɛkorɔn, na ɛde ahoɔden a ɛkorɔn na ɛtra hɔ kyɛ bonding adwumayɛ ma.

Nsɛm a Wɔaboaboa Ano – Honam fam ne Nnuru mu Nsakrae

Akwan anan a wɔfa so sa yare no nyinaa nya nsakrae atitiriw abien:

1. Honam fam nsakrae

Wɔdan molecule-level smooth inert surface no ma ɛbɛyɛ roughened topography a micro-nano-scale cavities, grooves, ne coral-style protrusions akata so, na ɛma mfiri-interlocking anchor points pii ma adhesive bonding.

2. Nnuru mu nsakrae

Wɔdannan ahoɔden a ɛba fam a wɔde perfluorocarbon nkɔnsɔnkɔnsɔn (-CF2-CF2-) ayɛ no ma ɛbɛyɛ nea ahoɔden kɛse wom a polar dwumadi akuw a oxygen ne nitrogen wom dɔɔso. Wobetumi de gluu a wɔde di dwuma daa ayɛ ɔfasu a wɔayɛ no foforo no nsu na ayɛ hydrogen nkitahodi anaasɛ nnuru mpo ne molecule ahorow a ɛbata ho.

Aokai PTFE de PTFE ntama a nnuru etching (daa, esum ani) ne plasma ayaresa (hotew, kɔla-kora, tiawa activation mfɛnsere) sɛ gyinapɛn options. Laser ayaresa wɔ hɔ ma dwumadie soronko a ɛhwehwɛ sɛ wɔyɛ nhwɛsoɔ a ɛyɛ pɛpɛɛpɛ. Di yɛn ho nkɔmmɔ na yɛne wo nsusuw wo bonding ahwehwɛde ahorow ho.

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