Thepi ya PTFE ya tikhemikhali ta phayiphi/xibya anti-corrosion, non-stick, na nsirhelelo wo pfalela yi lava substrate leyi fambelanaka, sisiteme yo namarhela, na switirhisiwa swa tikhemikhali. Silicone PSA yi hlohleteriwa eka 200-260°C na ti acids/alkalis; acrylic PSA yi lwisana na ti organic solvents kambe yi ringanyeta mahiselo kuya eka ≤150°C. Eka HF, ku virisa >80% alkali, kumbe chlorine trifluoride, tirhisa PTFE-only lining (ku hava organic adhesive). Xa nkoka: adhesive i xihlanganisi xo tsana swinene, hayi PTFE hi yoxe.

Matimba yo khoma thepi ya PTFE ya antswisiwa hiku tirhisa coating na curing process optimization. Ku peta: primer layer (0.5-2μm silane primer yi sivela ku rhurhumela ka adhesive), ku enta ka adhesive 30-60μm (swikahle eka ku khoma matimba), vacuum defoaming, na 5-10μm filtration. Ku horisa: ku hisiwa hi magoza (80-100°C solvent removal → 120-140°C shaping → 150-220°C deep crosslinking), endzhaku ka ku horisiwa (40-60°C kuringana 24-48h kuva yi olovisa ntshikelelo), na low-tension conveyance ku sivela ntshikelelo wale ndzeni kusuka eka substrate shrinkage. Primer yina nkoka eka eneji yale hansi ya PTFE yale henhla.

Thepi ya mahiselo yale henhla ya PTFE yitirha tani hi nchumu wa nkoka eka vumaki bya ti semiconductor, kungari xitirhisiwa xa xikongomelo xo angarhela. Switirhisiwa swa nkoka: nsirhelelo wa wafer-level (plasma etching masking, nsirhelelo wa le ndzhaku wa CMP, CVD/PVD masking), maendlelo yo paka (wire bonding fixation, soldering mask for PCBs), na ku hlayisiwa ka switirhisiwa (anti-static roller wrapping, cleanroom marking). Swilaveko swa ultra-clean: ti halogens tale hansi (yi sivela ku bola ka bond pad), ti siloxanes tale hansi (<500 ppm, yi sivela ku tumbuluxiwa ka ti insulating particle), ti ions ta nsimbi tale hansi (<1 ppm yin’wana na yin’wana), ISO Class 4 cleanroom slitting/packaging, 106-109 Ω surface resistivity, na ku humesiwa ka TVOC yale hansi.

Thepi ya mahiselo yale henhla ya PTFE ya giredi ya swa vutshunguri yi hlanganisa biocompatible PTFE substrate na platinum-cured silicone adhesive. Swihlawulekisi swa nkoka: Yi fambisana na ISO 10993 (ku hava cytotoxicity, sensitization, kumbe ku hlundzuka), yi tiyisela sterilization yo phindha-phindha (steam/EO/gamma), 260°C ku lwisana na kuhisa. Switsundzuxo swa nkoka: unga hundzi 260°C (musi wa chefu ehenhla ka 300°C), gamma irradiation yinga vanga embrittlement, ku tiyisisa tindlela ta sterilization, naku kombela matsalwa ya ku landzelela hiku hetiseka (swiviko swa ISO 10993, MSDS, data ya ku dyuhala). A hi ku tirhisiwa ka ngati hi ku kongoma kumbe ku nghenisiwa handle ka loko swi tiyisisiwile hi ku kongoma.

Ku tirhisiwa nakambe ka thepi ya PTFE swiya hi swilo swa mune: ku endliwa ka xinamarheti (ku tsindziyela ka crosslink ka le henhla, ku rhurha ka le hansi ka silicone, xivumbeko xa microphase xa tack leyi nga vekiwaka nakambe), ku khomisiwa ka substrate (ku tirhisiwa ka le henhla + primer ku sivela ku hundziseriwa ka namarheta hi ku helela), ku peta endzhaku (ku ntshunxa leyara ku sirhelela namarheta hi nkarhi wa ku pfula), na ku khomiwa loku faneleke (ku basisa vuandlalo bya namarheta, thekiniki ya kahle yo hlantswa, papalata ku hisa loku tlulaka mpimo). Ti adhesives leti cinciweke leti hlantswiwaka hi mati tinga vuyisa >90% wa tack endzhaku ko basisiwa.

Thepi ya PTFE ya mahiselo yo anama yi lava silicone PSA leyi hlayisaka ku namarhela kusuka eka -70°C kuya eka 260°C. Swiphemu swa nkoka swa dizayini: primer-anchored transition layer (yi sivela delamination), sea-island microstructure (MQ resin islands + polysiloxane continuous phase), gradient crosslinking (leyara yale ndzeni ya high-density kuva yi lwisana na creep, leyara yale handle ya low-density ya low-temp tack), na ti fillers leti tiyisisiweke hiku hisa (cerium oxide kuva yi lwisana na oxidation). Swiphemu swa siloxane leswi cinciweke hi phenyl swi tshikelela crystallization ya mahiselo yale hansi, leswi endlaka leswaku kuva na ku cinca cinca ehansi ka -100°C.

Aokai PTFE yi kombisile nxaxamelo wa yona hinkwawo wa swikumiwa eka APFE Shanghai 2026 (Booth 6T602, Holo 6). Switirhisiwa leswi kombisiweke swi katsa tithepi ta PTFE leti tiyisisiweke hi fiberglass, tifilimi ta PTFE to basa, tigiredi ta anti-static, na mabandhi yo fambisa ya mahiselo ya le henhla – lama funengetaka ku lulamisiwa ka swakudya, PV lamination, tibetiri ta lithium, swa elektroniki, na ku paka. Nkombiso wu ya emahlweni ku fikela hi June 26. Switirhisiwa hinkwaswo swi seketela swihlawulekisi swa ntolovelo.

Xivumbeko xa xikandza xa makumu lexi tsemiweke xa thepi ya mahiselo yale henhla ya PTFE xi khumba hiku kongoma ku khuluka ka adhesive na ku tlakuka ka makumu hi nkarhi wa ku cheriwa. Ku tshoveka lokunga kahle (dull blades, improper angle) swiendla ti glue filaments, swi olovisa edge adhesive layer, naswona swi paluxa ti fiberglass burrs – leswi yisaka eka oozing, weak bonding, naku tlakusa ehansi ka kuhisa kumbe tension. Swikandza swa makumu leswinga tshamisekangiki (wavy, protruding) swivanga ku hangalasiwa ka ntshikelelo lokunga ringaniki, leswi fambisaka adhesive creep hinkarhi wa nhlayiso. Xikandza xa kahle xa makumu xa rhetela, xa flush, naswona axi onhaki – xitirha tani hi seal leyi khiyaka adhesive naswona yitiyisisa ku hlanganisiwa ka matlhelo hinkwawo.

Hi nkarhi wa PTFE tape coating, solvent volatilization rate ya silicone pressure-sensitive adhesive i parameter ya nkoka ya maendlelo. Hiku hatlisa swinene → ku khuluka ka nhlonge yale henhla, ku nga ringani kahle, ti pinholes (trapped solvent), na ti craters (condensation kumbe contaminant-induced). Ku nonoka ngopfu → ku rhetela, matlhelo yo tiya, na ku dewetting eka PTFE ya eneji ya le hansi ya le henhla. Qhinga lerinene: ku nonoka ka volatilization yosungula kuva yi levela xikan’we naku baleka ka bubble, kutani ku hatlisisiwa ku omisiwa kuva yi vumba. Tirhisa ti solvents leti pfanganisiweke (toluene/xylene + fast-drying) na mahiselo ya oven ya gradient (yale hansi→xikarhi→le henhla).

Thepi ya mahiselo yale henhla ya PTFE yi lahlekeriwa hi ku namarhela endzhaku ka ku tirhisiwa ko phindha-phindha hikokwalaho ka ku thyakisa ehenhla (ntshuri, mafurha ya silicone), ku tsandzeka ka adhesive cohesive (masalela), kumbe ku boha ka substrate loku tsaneke. Switshuxo: high-crosslink silicone PSA (ku rhurha ka le hansi, balanced tack/holding power), vutshunguri bya primer eka substrate ya PTFE, dense fiberglass backing, na ku khoma kahle (swiphemu leswi tengeke, peel yo kufumela, 180° angle). Ku kamberiwa ka nhlayo swi tiyisisa ku antswisiwa.