Saa asɛm yi ka Teflon ntama a ɛyɛ hyew kɛse (ntama a wɔde fiberglass a wɔde PTFE akata so) a wɔde di dwuma wɔ ahunmu adwumayɛbea ho asɛm. Mmeae titiriw a wɔde di dwuma: Nneɛma a wɔabom ayɛ — gyae ntama/film wɔ autoclave molding, isolation layers, high-temperature conveyor belts ma prepreg production; Engine ne ɔhyew a ɛkorɔn ahobammɔ — ɔhyew insulation ntama, ogya fasu cladding, flexible ɔhyew a ɛkorɔn nkitahodi; Electrical insulation ne wire harness ahobammɔ — cable a wɔde kyekyere engine compartments ne landing gear bays; Wimhyɛn mu nneɛma ne ogya ho banbɔ — ogya ntama/wusiw akwansideɛ a ɛhyia FST gyinapɛn, thermal/acoustic insulation blanket cladding; Ahunmu ne ahunmu dwumadie — multi-layer insulation (MLI) nhyiamu, anti-cold-weld lubrication liners ma owia panel deployment mfiri ne antenna hinges, ɔhyew control ntama.

Saa asɛm yi kyerɛkyerɛ sɛnea PTFE a wɔde kata so no kyekyere fiberglass ntama a ɛwɔ Teflon ntama a ɛyɛ hyew kɛse mu no mu. Nnuru a wɔde bom tẽẽ no ntumi nyɛ yiye esiane PTFE ahoɔden a ɛba fam koraa a ɛwɔ soro nti. Wɔnam: Mfiri a wɔde hyɛ mu (honam fam nkitahodi) — PTFE emulsion hyɛn nhama mu na ɛkyere nhama a wɔaboaboa ano bere a wɔayɛ no sintering akyi; Silane coupling agent pretreatment — yɛ molecule bridge ntam inorganic ahwehwɛ nhama ne organic primer; Chemical primer nsakrae layer — de PAI, PPS, PES anaa PEEK resins a PTFE micropowder di dwuma, a wɔde di dwuma wɔ coupling ayaresa akyi de ayɛ nsakrae layer a ɛyɛ den; Hot-melt adhesive film lamination — FEP anaa PFA sini (melting point 260-310°C) bata PTFE sini a wɔadi kan ayɛ no ho wɔ ntama ho; Gradient nhyehyɛe via impregnation ne sintering cycles pii — dilute kan twam ne binder / coupling agent penetrates deep mu fibers, akyi no kronkron PTFE impregnations, abɔ compositional gradient fi fiberglass to pure PTFE.

Saa asɛm yi ka sɛnea microporous structure design of breathable Teflon (PTFE) high-temperature tape ma mframa a ɛkɔ mu ne insulation ne non-stick su kari pɛ ho asɛm. Core ntawntawdi: mframa a ɛtumi fa mu no hwehwɛ sɛ ntini a ɛbue, bere a insulation hwehwɛ sɛ ɛyɛ den na ɛnyɛ nea ɛbata ho hwehwɛ sɛ ɛwɔ soro a ɛyɛ torotoro. Nsusuwii akwan a ɛkari pɛ: hwɛ sɛnea pore diameter (0.1-2μm, sɛnea ɛbɛyɛ yiye no <0.5μm) so na wɔasiw melt penetration ano na wɔakura breakdown voltage mu; control porosity wɔ 50-70% (≈60% optimal) a wonya Gurley 20-100s/100cc ne dielectric ahoɔden ≥2kV ma 0.13mm sini; fa 3D network pore nhyehyɛe a ɛyɛ tortuosity kɛse (τ≈2.5-4) tom de siw nsu a ɛkɔ tẽẽ no ano; yɛ asymmetric gradient pore nhyehyɛe a dense surface skin layer (1-5μm) ma non-stick/insulation ne porous mu ma breathability; fa super-oleophobic / hydrophobic soro akyi ayaresa a enni pore blockage.

Saa asɛm yi de mfaso a ɛwɔ PTFE ntama a ɛyɛ hyew kɛse so sɛ nneɛma a wɔde yiyi nneɛma a ɛyɛ hyew kɛse so. Ahoɔden atitiriw asia: Ɔhyew a ɛda nsow a ɛko tia (260°C a ɛkɔ so, ne sorokɔ ~300°C), ɛboro PPS (190°C) ne aramid (200°C); Nnuru a ɛnyɛ adwuma kɛse a ɛko tia acid, alkalis, solvents ne oxidants, hydrolysis-resistant, ɛyɛ adwuma sen aramid ne P84 wɔ corrosive flue gas mu; Mfutuma ahotew adwumayɛ a ɛkorɔn a ɛwɔ soro ahoɔden a ɛba fam koraa a ɛma wotumi yi mfutuma keeki a ɛyɛ mmerɛw na nhyɛso a ɛba fam a ɛkɔ so tra hɔ daa; Filtration efficiency a ɛkyɛn so a pore akɛseɛ 0.1-3μm kyere bɛboro 99.99% PM2.5 asinasin; Ɛnyɛ ogya a LOI boro 95%, a anti-static options wɔ hɔ; Mfiri ahoɔden a ɛkorɔn a efi fiberglass ahoɔden mu, a PTFE fiber media kronkron a ɛde nsakrae ne >mfe 4 ɔsom nkwa ma. Wɔde toto ho yiye tia PPS, aramid, Nomex, P84 ne fiberglass filter media wɔ ɔhyew, nnuru a ɛko tia, hydrolysis a ɛko tia ne ahotew adwumayɛ mu.

Saa asɛm yi de ano aduru a wɔahyehyɛ a wɔde besiw adhesive nkae ne adhesive mogya ano bere a wɔde PTFE teyp a ɛyɛ hyew kɛse redi dwuma de abɔ PCB sika kɔkɔɔ nsateaa ho ban bere a wɔreyɛ SMT nhyiam no ma. Ntini a ɛde ba nhwehwɛmu: nkae no ba fi huammɔdi a ɛka bom anaasɛ ntamgyinafo a wɔde kɔ baabi foforo mu; mogya fi viscosity drop ne adhesive overflow wɔ reflow ɔhyew ase. Core ano aduru ne tape paw a ɛfata: silicone PSA a bere tiaa mu peak ≥300 ° C, kɔ so ≥260 ° C, ne nyinaa thickness 0.08-0.13mm ne tratraa high-cohesion adhesive layers, ne anti-bleed / residue-free adansedi. Anamɔn asia nhyehyɛe a wɔde di dwuma: pre-lamination ahotew a wɔde IPA; zero-tension lamination a mframa a ɛkɔ nipadua no mu nyinaa; optimized reflow ɔhyew profile a ɔhyew brɛoo (<2 ° C / s); awɔw mu a wɔde yiyi ne ho wɔ 50°C ase wɔ 180° anim; wɔyɛ ho adwuma ntɛm ara wɔ nnɔnhwerew 24 ntam na wɔde di dwuma pɛnkoro pɛ; huammɔdi ho dwumadie a wɔde IPA popa ne 40-50x magnifier nhwehwɛmu. Sɛ wopɛ PCB a ɛwɔ afã abien a, fa teyp foforo si ananmu ansa na woayɛ ɔfã a ɛto so abien ho adwuma.

Saa asɛm yi de akwankyerɛ a wɔahyehyɛ ma wɔ sɛnea wobesiw nwi a ɛbɛba PTFE ntama a ɛyɛ hyew kɛse so bere a wɔreyɛ sintering no ho. Nea ɛde nwi a ɛyɛ nwininwini ba titiriw ne ɔhyew a ɛtwetwe a ɛnyɛ pɛpɛɛpɛ ne adwennwen a ɛnkɔ so pɛpɛɛpɛ. Ano aduru kata adwumayɛ nhyehyɛe a edi mũ so: raw material substrate control (dewaxing/ɔhyew nhyehyɛe a edi mũ de yi emu nhyɛso fi hɔ); impregnation ne drying (nneɛma a ɛyɛ tratraa pii a wɔde kata so, ɔhyew a ɛkɔ soro brɛoo, active drive rollers); sintering fononoo sohwɛ (1-3% overfeed ma ɔhyew shrinkage allowance, closed-loop micro-tension control, transverse ɔhyew biakoyɛ wɔ ±5 ° C, gradient preheating-sintering-cooling curve, mframa-flotation fononoo sɛ ano aduru a eye sen biara, curved spreader rollers onwini ne nhyehyɛe (nwini a ɛyɛ brɛoo nkakrankakra, kɔ so trɛw kosi sɛ ɛbɛba fam 100°C, onwini a edi mũ ansa na woabɔ); intanɛt so hwɛ a wɔde hann a emu yɛ den hwɛ ne infrared scanning.

Saa asɛm yi hwehwɛ sɛnea sandblasting anaa matt finishing treatment nya PTFE ntama a ɛyɛ hyew kɛse no ani nhyehyɛe so nkɛntɛnso. Nsakrae ba wɔ afã abiɛsa: Microscopic morphology dan fi ahwehwɛ a ɛte sɛ ahwehwɛ a ɛyɛ torotoro so kɔ gully texture a ɛyɛ mmerɛw a Ra/Rz gyinapɛn ahorow kɔ soro kɛse, na ɛma 3D mfiri anchoring nhyehyɛe ahorow ma nkitahodi a edi hɔ. Coating integrity hyia asiane ahorow: PTFE layer thinning, fiberglass substrate a ebetumi ada adi (a ɛde nneɛma a ɛnyɛ nnam a ɛyera, nsu a ɛkɔ mu, ne mfiri ahoɔden a ɛso tew), ne microcracks ne debris awo ntoatoaso.

Saa asɛm yi de mfitiaseɛ kwan a edi mũ a wɔfa so de PTFE emulsion hyɛ fiberglass ntama mu no ba. Anamɔn atitiriw ason: 1 Pretreatment (dewaxing/desizing) wɔ 350-400°C de yi nneɛma a ɛma ntama yɛ kɛse fi hɔ; 2 Emulsion formulation a 40-55% solid content ne surfactants ma nsuo a ɛkɔ anim; 3 Impregnation denam dip-squeeze kwan anaa oduruyɛfo blade coating so; 4 Wobɛyow wɔ 100-150°C ma nsuo ayɛ brɛoo na ayɛ PTFE film a ɛyɛ dry; 5 Sintering wɔ 360-390°C (ɛkɔ 400°C) de nwene PTFE asinasin no ma ɛbɛyɛ film a ɛkɔ so; 6 Multi-cycle impregnation-drying-sintering a wɔsan yɛ no mpɛn 2-4 sɛnea ɛbɛyɛ a wobedu botae no mu duru ne resin a ɛwɔ mu (45-65%); 7 Ayaresa akyi a corona ayaresa, anoano trimming, winding ne quality inspection ka ho. Core control points: dewaxing koraa, emulsion wetting a edi mũ, nkakrankakra drying, sintering hyew pɛpɛɛpɛ, ne coating density a ɛkɔ so daa. Nneɛma a wɔyɛ no som laminates a wɔde kɔbere adura ho a ɛyɛ frequency a ɛkorɔn, conveyor belts a ɛyɛ hyew kɛse ne adansi membrane nneɛma.

Saa asɛm yi ka adwumayɛ ho nsɛnkyerɛnne titiriw ma PTFE ɔhyew a ɛkorɔn teapɔn a wɔde di dwuma wɔ vacuum coating, vacuum ɔhyew ayaresa ne mmeae a ɛtete saa ho asɛm. Ahwehwɛdeɛ titire no yɛ soronko kɛseɛ wɔ wim dwumadie ho: mframa a wɔde fi adi no ho hia paa (TML≤1%, CVCM≤0.1%; ahunmu/aniwa mu abasobɔdeɛ hwehwɛ TML≤0.5%, CVCM≤0.01%); ɛsɛ sɛ wɔhwɛ sɛ ɔhyew a ɛko tia no yɛ nokware ma PTFE substrate (260°C) ne adhesive layer nyinaa; silicone PSA a wɔatew ho titiriw a mframa ntumi nkɔ mu pii ho hia na wɔasiw siloxane efĩ ano; tumi a ɛkura ɔhyew a ɛkɔ soro no siw creep ne edge lifting ano; ahotew nhwehwɛ sɛ wɔmfa nhama nkɔgu na ion a ɛwɔ mu no sua; anti-static tape (surface resistivity 106-109 Ω/sq) siw ESD a wɔsɛe no ano; ɛsɛ sɛ wɔsɔ plasma a ɛko tia no hwɛ ma sputtering/PECVD akwan horow no; thermal shrinkage a ɛba fam 2% hwɛ hu sɛ masking no yɛ pɛpɛɛpɛ.

Saa asɛm yi de organic solvents a PTFE ntama a ɛyɛ hyew kɛse tumi gyina ano no ba. PTFE-coated fiberglass ntama da nnuru soronko a ɛnyɛ adwuma adi, ɛkame ayɛ sɛ ɛko tia organic solvents a wɔtaa de di dwuma nyinaa wɔ adwumayɛ tebea a ɛfata mu a entumi nsɛe, ɛho ahonhon anaa nnuru a ɛyɛ adwuma. Nneɛma a wotumi gyina ano no bi ne: nsa (methanol, ethanol, isopropanol), ketones (acetone, MEK, cyclohexanone), esters (ethyl acetate, butyl acetate), hydrocarbons (petrol, toluene, xylene, hexane), hydrocarbon a halogen wom (dichloromethane, chloroform, carbon tetrachloride), ethers (diethyl ether, THF), organic acid (glacial acetic acid, formic acid), amines ne amides (triethylamine, DMF), phenols, ne afoforo te sɛ carbon disulfide, pyridine, silicone ngo ne breki nsu.