Qhov kev qhia luv luv no los ntawm Jiangsu Aokai tshuaj xyuas seb qhov kub thiab txias ntau npaum li cas ua rau PTFE qhov kub thiab txias. Tsawg sintering yoojyim cov khoom tsis zoo, ua rau micro-pores, tsis muaj zog txheej txheej-substrate bonding, ntxhib nto, tsis muaj zog txhua yam, thiab milky opaque tsos. Overheating induces PTFE thermal degradation, tsim cov pinholes, npuas, brittleness, daj-rau-dub discoloration, thiab tso pa phem. Ob qho tag nrho ua rau kev sib tsoo, kev ua haujlwm tsis zoo, ua kom yooj yim, rwb thaiv tsev, thiab qhov ntev stability.

PTFE high-temperature fabric insulating gaskets combine high dielectric zog (ruaj khov nyob rau hauv cov av noo), -70 ° C mus rau 260 ° C kub ntau yam, universal tshuaj tsis kam (tshwj tsis yog molten alkali hlau), non-stick deg (tiv thaiv creepage), anti-creep (fiberglass reinforcement vs. ntshiab PTFE), siab tensile zog μ0. V-0 nplaim taws ntsuas. Piv nrog rau mica, roj hmab, thiab ntshiab PTFE gaskets, PTFE daim ntaub muaj superior saj zawg zog, processability, thiab ntev mus ntev stability. Zoo tagnrho rau transformers, lub cev muaj zog rwb thaiv tsev, tshuaj flange sealing, thiab semiconductor khoom.

PTFE emulsion tus nqi yog cuam tshuam los ntawm cov xwm txheej thoob plaws tag nrho cov saw hlau. Cov nqi qis (fluorite mining, R22 refrigerant quotas) teeb tsa tus nqi hauv pem teb. Downstream thov los ntawm lithium roj teeb binders yog tus tsav tsheb loj hlob. Cov khoom siv (kev lag luam kev lag luam, kev saib xyuas cov nroj tsuag) thiab cov khoom zoo (cov ntsiab lus ntawm cov khoom, qhov loj me, qib purity) tsim cov nqi sib tw. Ib puag ncig cov cai (PFOA/PFAS txwv) nce nqi ua raws cai. Logistics (tsheb thauj mus los txias) ntxiv cov nuj nqis tseem ceeb. Nqe nqes ua raws li cov ntsiab lus tseem ceeb: fluorite / hydrofluoric acid nqi = pem teb; tshiab zog roj teeb xav tau = trend direction; kev khiav hauj lwm tus nqi thiab cov cai = lub sij hawm luv luv volatility ua rau.

PTFE daim kab xev rau cov yeeb nkab tshuaj / lub nkoj los tiv thaiv corrosion, tsis yog-stick, thiab kev tiv thaiv sealing yuav tsum muaj kev sib txuam substrate, nplaum nplaum, thiab cov tshuaj lom neeg. Silicone PSA raug pom zoo rau 200-260 ° C nrog acids / alkali; acrylic PSA tiv thaiv cov kuab tshuaj organic tab sis txwv qhov kub thiab txias rau ≤150 ° C. Rau HF, boiling> 80% alkali, los yog chlorine trifluoride, siv PTFE-tsuas hauv ob sab phlu (tsis muaj organic nplaum). Tseem ceeb: nplaum yog qhov txuas tsis muaj zog, tsis yog PTFE nws tus kheej.

PTFE daim ntaub flatness thaum sintering yuav tsum nruj nro, kub, thiab tswj tswj. Cov txheej txheem tseem ceeb: stenter tshuab (pin daim hlau tuav dav, tiv thaiv weft shrinkage), gradient kub profile (slow cua sov → 380-400 ° C tuav → qeeb txias hauv qab 310 ° C ua ntej tso nro), pre-shrunk substrate (tshem weaving kev nyuaj siab ua ntej txheej), thiab uniform txheej thickness (tiv thaiv sib txawv melting). Steter restraint yuav tsum tau khaws cia kom txog thaum txias hauv qab ntawm PTFE crystallization point (kwv yees li 310 ° C) los tiv thaiv warpage.

Txheej uniformity thaum lub sij hawm PTFE emulsion impregnation ntawm fiberglass ntaub yog lub lifeline ntawm cov khoom zoo. Cov txheej tsis sib xws ua rau: tsis muaj cov nplaum tsis ua haujlwm (sib lo rau ntawm qhov nyias nyias), kev ua haujlwm tsis muaj zog (kev ntxhov siab, kev tsim kua muag), hluav taws xob tsis ruaj khov (kev tawg hluav taws xob poob mus rau 1/10), tshuaj nkag mus (pinhole corrosion), qhov teeb meem loj (warpage), thiab kev ua haujlwm tsis xws luag (siv wandering, thickness variation). Cov txheej txheej yuav tsum tau tswj xyuas meej ntawm emulsion viscosity, cov ntsiab lus khoom, cov ntaub ntom ntom, nyem qhov khoob, thiab ntau thaj chaw ziab / sintering profiles.

PTFE daim kab xev tuav lub zog yog txhim kho los ntawm txheej txheej thiab kho txheej txheem optimization. Txheej: primer txheej (0.5-2μm silane primer tiv thaiv cov nplaum nplaum), nplaum tuab 30-60μm (zoo rau tuav lub zog), nqus defoaming, thiab 5-10μm pom. Curing: stepwise cua sov (80-100 ° C hnyav tshem tawm → 120-140 ° C shaping → 150-220 ° C sib sib zog nqus crosslinking), tom qab-kho (40-60 ° C rau 24-48h kom so kev ntxhov siab), thiab tsis tshua muaj kev thauj mus los los tiv thaiv kev ntxhov siab los ntawm substrate shrinkage. Cov primer yog qhov tseem ceeb rau PTFE lub zog qis.

PTFE high-temperature fabric undergoes plaub theem ntawm kev hloov pauv raws li qhov kub thiab txias: hauv qab 260 ° C - qeeb micro-cracking thiab residual additive volatilization; ntawm 327 ° C (melting point) - crystalline-rau-amorphous hloov, txheej softens, delaminates los ntawm fiberglass; 400-500 ° C - PTFE depolymerizes (tso tawm cov pa roj carbon monoxide), txheej txheej ploj; saum toj 500 ° C - fiberglass softens (840 ° C softening point) thiab poob kev ncaj ncees. Nyob qis dua 260 ° C tas mus li, tsis txhob> 300 ° C peaks rau kev ua haujlwm nyab xeeb.

PTFE high-temperature daim ntaub yog tsim los ntawm ib leeg-dip impregnation (ib qho dhau: ceev, tsis tshua muaj nqi, txheej nyias, ntxhib nto nrog pinholes) los yog ntau-dip impregnation (2-3+ dhau: du, ntom, tsis muaj pinhole-dawb txheej, PTFE cov ntsiab lus 50-70%, kev ua tau zoo dua, tus nqi siab dua). Ib leeg-dip suits qib qis gaskets, ib ntus mats, thiab cov ntaub ntawv breathable. Multi-dip yog yuav tsum tau rau cov zaub mov-qib ntawv ci, tsis-stick conveyor siv, high-frequency Circuit Court substrates, tshuaj liners, thiab architectural daim nyias nyias.

PTFE high-temperature fabric deg kho mob lov tshuaj inertness rau kev sib txuas / luam ntawv. Plaub txoj kev: tshuaj etching (sodium-naphthalene, nto zog 20 → 40-50 dyn / cm, ruaj khov txheej tsaus, micro-porous qauv), plasma kev kho mob (nano-roughening, functional pab pawg grafting, luv luv lub qhov rais), corona kho (thin-zaj duab xis, ceev decay, txwv qhov tob), thiab laser patternization (pre-precision carbonization). Txhua txoj kev siv lub cev roughen thiab chemically qhia cov pawg polar (C = O, -OH, -COOH) kom ua kom cov nplaum nplaum.