Xihloko lexi xi katsa swikombiso swa nkoka swa matirhelo ya thepi ya mahiselo yale henhla ya PTFE leyi tirhisiwaka eka ku peta hi vacuum, vutshunguri byo hisa bya vacuum na tindzhawu leti fanaka. Swilaveko swa nkoka swihambana swinene na matirhiselo ya xibakabaka: ku humesiwa ka gasi swina nkoka swinene (TML≤1%, CVCM≤0.1%; tigiredi ta aerospace/optical ti lava TML≤0.5%, CVCM≤0.01%); ku tiya ka mahiselo swifanele ku tiyisisiwa eka hinkwaswo swa PTFE substrate (260°C) na adhesive layer; silicone PSA leyi basisiweke hi ndlela yo hlawuleka leyi nga na gasi ya le hansi ya laveka ku sivela ku thyakisa ka siloxane; matimba yo khoma mahiselo yale henhla ya sivela creep na edge lifting; ku basa swilava leswaku kungavi na ku khuluka ka fibre xikan’we na nhlayo yale hansi ya ionic; thepi leyi lwisanaka na static (ku tiya ka le henhla ka misava 106-109 Ω/sq) yi sivela ku onhaka ka ESD; ku lwisana ka plasma kufanele ku kamberiwa eka maendlelo ya sputtering/PECVD; kuhunguteka ka mahiselo ehansi ka 2% switiyisisa ku kongoma ka masking.

Xihloko lexi xi pimanisa ku vupfa ka mahiselo ya kamara na mahiselo ya le henhla ya xinamarheti lexi twaka ntshikelelo wa silicone xa thepi ya PTFE. Ku vupfa ka mahiselo yale henhla (120-180°C) swiendla ti dense crosslinked networks letingana matimba yo tiya ya cohesive, leswi sivelaka masalela ya adhesive endzhaku ko rhurhumela. Yi endla ti chemical anchoring bonds na PTFE substrates hiku tirhisa primer co-curing, leswi herisaka makhombo ya delamination. Ku vupfa ka mahiselo yale henhla switlhela swisusa ti low-molecular volatiles loko kungase rhumeriwa, leswi sivelaka ku bubbling xikan’we naku thyakisa oil ya silicone hinkarhi waku hisiwa kosungula.

Nkongomiso lowu wu katsa ku hlawuriwa ka thepi ya mahiselo yale henhla ya PTFE eka injection molding demolding na switirhisiwa swa anti-stick. Ku hlawuriwa loku sekeriweke eka mahiselo: ≤260°C eka tipulasitiki to angarhela (standard silicone PSA tape, 0.13-0.18mm); 260-300°C eka tipulasitiki ta vunjhiniyara ta mahiselo yale henhla yofana na PC, PA66, POM (xinamarheti xa silicone xa mahiselo yale henhla, 0.18-0.25mm); 300-400°C eka PEEK, LCP, PPS ekusuhi na switsutsumi swo hisa (thepi yo namarhela ya tsandzeka; tirhisa lapi ra PTFE leri nga riki na namarheta kumbe filimi ya PFA). Ku hlawuriwa loku sekeriweke eka switirhisiwa: switirhisiwa swa tacky swilava high-release pure PTFE surfaces; switirhisiwa leswi taleke hi nghilazi/minerali swi lava thepi yo tika ya 0.25mm+ leyi nga onhakiki; swiengeteri leswi onhaka swi lava xinamarheti lexi lwisanaka na tikhemikhali na substrate yo enta; switirhisiwa leswi nga na vuxiyaxiya bya static swi lava thepi ya anti-static black PTFE.

Lapi ra fiberglass leri pfanganisiweke na PTFE ri tirhisiwa ngopfu eka ku lulamisiwa ka rhaba hikokwalaho ka ku tiya ka rona, ku nga namarheli, na ku hlangana ka le hansi. Switirhisiwa swa nkoka swikatsa: ti release liners ta plate/vacuum vulcanization xikan’we naku vumba mathayere; mabandhi yo fambisa lama nga namarheliki ya swigayo leswi pfulekeke, tikhalendara ni tilayini to kufumeta; lapi ro hlanganisa ra vuhlayiselo bya rhaba leyi nga hetiwangiki ngopfu; ku khomiwa hi ndlela yo hlawuleka ka silicone na fluororubber; na titreyi ta oven to post-curing. Mimbuyelo yikatsa ku herisa ku namarhela ka mold, ku hunguta kutirhisiwa ka release agent, ku sivela ku phutsela ka roller, naku tiyisisa ku demolding hiku olova.

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.