Iiteyiphu ze-PTFE zobushushu obuphezulu obugcinwe kwifom yomqulu zinokubandezeleka ngenxa ye-interlayer adhesion (ukuthintela) kunye nokudluliselwa kwe-adhesive ukuya kwicala elinganamatheli. Iingcambu ezibangela: ifilimu ye-PTFE imemori elastiki kunye ne-silicone ye-PSA ikhwela phantsi koxinzelelo kunye nobushushu. Isisombululo: I-gradient winding tension - iqinile kumaleya angaphandle, ikhululekile kumaleko angaphakathi - usebenzisa ulawulo lokuxinezeleka oluvaliweyo. Gcwalisa isambatho sokukhululwa, ukugcinwa okufanelekileyo (15-40 ° C, 30-70% RH), ukubekwa okuthe tye, kunye nokujikeleza kwekota.

Iteyiphu yobushushu obuphezulu be-PTFE esetyenziswa kuqhagamshelwano lokutya kufuneka ihloniphe imida yobushushu obungqongqo: ≤260°C ukusetyenziswa rhoqo (akukho mda wexesha), 260-300°C ukuya kuthi ga kwimizuzu engama-30 kuphela, kwaye>300°C akuvumelekanga. Iteyiphu yeyokufowunelwa ngokungathanga ngqo kuphela (i-tray liners, i-heat sealer covers), hayi ukusonga ukutya ngokuthe ngqo. Ungaze usebenze ngaphandle komthwalo wokutya (ukufudumeza okomileyo). Faka enye indawo ukuba inamadyungudyungu, ityheli, okanye igugile.

I-Silicone i-adhesives-sensitive adhesives (PSA) ye-PTFE iiteyiphu zobushushu obuphezulu ziyahluka ngokubanzi ekusebenzeni kokuguga okuphezulu. I-Methylphenyl silicone PSA igcina> i-85% yamandla e-peel emva kwe-250 ° C / iintsuku ze-7, ngelixa uhlobo oluqhelekileyo lwe-methyl luhla kwi-50-70%. Iinkqubo ezongeziweyo (i-hydrosilylation) zinika uzinzo olungcono kakhulu kune-peroxide-nyango. Ngenkonzo eqhubekayo ye-200 ° C+, khetha amabanga aphezulu-phenyl anephenyl.

Iiteyiphu ze-PTFE zokubambelela ngoxinzelelo lwe-thermal-sensitive adhesive (PSA) kufuneka ziqhube ubushushu ngelixa zihlala zincangathi. Ukongeza izihluzi ziphucula ukuhanjiswa kwe-thermal kodwa kulimaza ukunamathela. Ibhalansi efanelekileyo isebenzisa i-spherical coarse particles (njenge-conductive skeleton) edityaniswe ngamasuntswana amahle (ukugcwalisa i-voids), ukugcina ukulayishwa okupheleleyo kwe-filler nje ngaphezu kwe-percolation threshold. Gwema iiflakes kunye nemicu; babulala intambo.

I-PTFE iteyiphu yobushushu obuphezulu busebenza kwishishini le-PV kwiindima ezimbini ezihlukeneyo: inkqubo esetyenziswayo (ithintela ukunamathela kokuphuphuma kwe-EVA kwi-laminators, imaski ye-solder) kunye nokufakwa kwexesha elide (ukusonga kwebhasi, ukulungiswa kwebhokisi ye-junction). Ukusetyenziswa ngokusisigxina kwangaphakathi, iiteyipu kufuneka zidlule i-IEC 61215: 1000-2000h ukushisa okumanzi, i-UV, ibhayisikili ye-thermal (-40 ° C ukuya + 85 ° C), kunye ne-silicone PSA kunye ne-shrinkage <1%.

Iteyiphu yobushushu obuphezulu be-PTFE esetyenziswa kwiimela zokutywinwa kobushushu kunye nemicu yokutywina ihambisa amaxabiso angundoqo amane: inqanda ukuncamathelwa kweplastiki enyibilikayo (iphelisa ixesha lokuphumla), ikhusela ukutywinwa okuxabisa kakhulu kuyafa, ihomogenizes ubushushu/uxinzelelo lwamatywina angaguqukiyo, kwaye inciphisa ukukhuhlana kwefilimu. I-fiberglass-backed tape (0.13-0.25 mm) kunye ne-silicone PSA (≥260 ° C) iyanconywa. I-tape emnyama ye-anti-static kwimigca yesantya esiphezulu.

Ipropathi yothintelo lomphunga wamanzi we-PTFE iteyiphu encamathelayo imiselwa ikakhulu ziziphene zokwaleka (micropores, microcracks, fibre wicking) kune-PTFE's intrinsic hydrophobicity. Ifilimu ye-PTFE ecocekileyo ibonelela nge-WVTR ephakathi kuphela. I-multi-layer coating kunye ne-lamellar fillers (i-mica, i-glass flakes) yenza umphumo we-labyrinth, ukunciphisa kakhulu ukuhanjiswa komphunga. Ukutywinwa komswakama ophezulu, khankanya iingubo ezixinzelelekileyo.

Ukumelana ne-Creep ye-PTFE i-tape yokubambelela yobushushu obuphezulu phantsi komthwalo oqhubekayo wexesha elide (ingakumbi kwi-200-260 ° C) imiselwe zizinto ezimbini: i-silicone ye-PSA ye-crosslink density (i-higher crosslinking inqanda ukuhamba) kunye nohlobo lwe-substrate (i-fiberglass-eqiniswe i-PTFE ixhathisa ukukhwela okubandayo; ifilimu ye-PTFE ecocekileyo iyahamba). I-adhesive engaxutywanga ihluleka ngokukhawuleza ekushiseni okuphezulu. Iileya ezincamathelayo ezityebileyo zonyusa umngcipheko wokukreqa.

Kwiteyiphu yobushushu obuphezulu be-PTFE esetyenziswa kwizicelo zokukhuhlana kwe-abrasive sliding, non-stick nokumelana nobushushu akwanelanga. Iikhrayitheriya zokukhetha eziphambili: Ilahleko ye-Taber abrasion (<15 mg / 1000 imijikelezo), izaliswe i-PTFE eguquliweyo i-coating (i-carbon / graphite / MoS₂), idatha ye-PV umda, amandla e-substrate (≥200 N / cm), kunye nobunzima bokubambisana (Ra 0.2-0.4 μm). Ukukhuselwa komphetho okufanelekileyo kunye nokudibanisa okupheleleyo kubaluleke kakhulu kwixesha elide.

I-PTFE substrate iyaxhathisa ngokwendalo isitshizi setyuwa (ukufunxwa kwamanzi <0.01%). Nangona kunjalo, ukusebenza kwe-tape jikelele kuxhomekeke kuhlobo lokunamathela: i-silicone ye-PSA imelana neendawo zaselwandle (i-500-1000h iimvavanyo zokutshiza ityuwa,> 80% ukugcinwa kwe-peel); i-acrylic PSA iyasilela. Ukunyangwa okufanelekileyo kwendawo, ukusetyenziswa kwe-bubble-free, kunye nokutywinwa komda kunye ne-silicone sealant kubaluleke kakhulu ekuthembekeni kwexesha elide kumaqonga ase-offshore kunye neenqanawa.