Itheyiphu ye-PTFE yokushisa okuphezulu inokumelana nesifutho sikasawoti esihle kakhulu, kodwa amaphuzu abuthakathaka ungqimba olunamathelayo kanye nemiphetho ye-fiberglass substrate. Izindlela zokuhlola: Ukuhlolwa kwe-1000h neutral salt spray (NSS), ukulinganisa ukugcinwa kwamandla e-peel (≥80% edingekayo), ukukhubazeka okubukwayo (ukuphakamisa, amabhamuza), kanye nokugqwala kwe-substrate yensimbi. Ezindaweni zasolwandle nezinosawoti omningi: sebenzisa i-silicone PSA (hhayi i-acrylic), i-PTFE substrate efakwe ngokugcwele, vala imiphetho nge-sealant emelana nesimo sezulu, bese usebenzisa i-primer ezindaweni zensimbi.

Izinamathiselo ezizwela ukucindezela kwe-Silicone (PSA) zamateyipu we-PTFE wezinga lokushisa eliphezulu ziyahlukahluka kakhulu ekusebenzeni kokuguga okuphezulu kwezinga lokushisa. I-Methylphenyl silicone PSA igcina >85% amandla ekhasi ngemva kwezinsuku ezingu-250°C/7, kuyilapho uhlobo lwe-methyl olujwayelekile lwehla luye ku-50-70%. Izinhlelo ze-addition-cured (hydrosilylation) zinikeza ukuzinza okungcono kakhulu kunokwelashwa nge-peroxide. Ngesevisi eqhubekayo engu-200°C+, khetha amamaki e-phenyl aphezulu alaphelwe ngokwengezwa.

Amateyipu e-PTFE anamathela ngokushisayo (i-PSA) kufanele aqhube ukushisa ngenkathi enamathela. Ukwengeza ama-filler kuthuthukisa ukuqhutshwa kokushisa kodwa kulimaza ukunamathela. Ibhalansi ekahle isebenzisa izinhlayiya eziyindilinga ezimahhadla (njengohlaka lwamathambo) oluhlanganabi, iyiqhathanise nezinye izinto, futhi inikeze izindlela ezisebenzayo zokubhekana nomkhawulo.

Itheyiphu ye-PTFE yokushisa okuphezulu isebenzela imboni ye-PV ngezindima ezimbili ezihlukene: inqubo esebenzisekayo (ivimbela ukunamathela okuchichima kwe-EVA kuma-laminator, imaski ye-solder) kanye nokufakwa kwempilo ende (ukugoqa kwebhasi, ukulungiswa kwebhokisi lokuhlangana). Ngokusetshenziswa kwangaphakathi unomphela, amateyipu kufanele adlule ku-IEC 61215: ukushisa okumanzi okungu-1000-2000h, i-UV, ukuhamba ngebhayisikili okushisayo (-40°C kuya ku-+85°C), ne-silicone PSA kanye nokuncipha kuka-<1%.

Itheyiphu ye-PTFE yokushisa okuphezulu esetshenziswa emimeseni evala ukushisa nemicu yokuvala iletha amanani amane abalulekile: ivimbela ukunamathela kwepulasitiki okuncibilikisiwe (iqeda isikhathi sokuphumula), ivikela ukufa kokuvalwa okumba eqolo, yenza kube lula ukushisa/ingcindezi yezivalo ezingaguquki, futhi inciphisa ukungqubuzana kwefilimu. Kunconywa itheyiphu ye-Fiberglass-backed (0.13-0.25 mm) ene-silicone PSA (≥260°C). I-Anti-static black tape yemigqa enesivinini esikhulu.

Isici sokuvimbela umhwamuko wamanzi wetheyiphu yokunamathisela ye-PTFE sinqunywa ngokuyinhloko ngokulimala kokumboza (ama-micropores, ama-microcracks, ama-fiber wicking) kune-PTFE's intrinsic hydrophobicity. Ifilimu ye-PTFE ehlanzekile inikeza i-WVTR emaphakathi kuphela. I-Multi-layer coating kanye ne-lamellar fillers (i-mica, ama-glass flakes) yenza umphumela we-labyrinth, unciphisa kakhulu ukuhanjiswa komphunga. Ukuze uvale uphawu lomswakama ophezulu, cacisa ama-coatings aminyene.

Ukumelana ne-Creep ye-PTFE high-temperature adhesive tape ngaphansi komthwalo ongaguquki wesikhathi eside (ikakhulukazi ku-200-260 ° C) kunqunywa izici ezimbili: i-silicone PSA crosslink density (i-crosslinking ephakeme ivimbela ukugeleza) kanye nohlobo lwe-substrate (i-fiberglass-reinforced PTFE imelana nokukhasa okubandayo; ifilimu ye-PTFE ehlanzekile iyakhasa). Ingcina engaxhunywanga ihluleka ngokushesha ekushiseni okuphezulu. Izendlalelo zokunamathela eziqinile zandisa ingozi yokukhuphuka.

Kumateyipu e-PTFE aphezulu okushisa ngaphansi kokucwiliswa isikhathi eside, i-PTFE substrate ihlala ingasebenzi ngamakhemikhali, kodwa isendlalelo sokunamathisela iphoyinti elibuthakathaka. Amanzi enza buthaka i-PSA ye-silicone; amanzi anosawoti asheshisa ukugqwala. Kumakhemikhali anolaka, i-fluorosilicone noma i-perfluoropolyether adhesives - noma i-PTFE tape enganamatheli - iyadingeka. Peel ukulahlekelwa amandla kufika ku-40% ngemva kwamahora angu-48 emanzini.

Itheyiphu ye-PTFE yokushisa okuphezulu idinga isitoreji esifanele ukugcina ukunamathela kwayo, ukuguquguquka, nokusebenza kokukhishwa. Izidingo ezibalulekile zifaka ukulawulwa kwezinga lokushisa (10-30°C), umswakama ongaphansi kuka-60%, ukugwema ukukhanya, ukuhlukaniswa kwamakhemikhali, ukubekwa okuqondile, kanye nokukhipha umoya. Landela ukuphathwa kwe-inventory ye-FIFO futhi uhlole njalo.

Izinga lokushisa lengilazi (Tg) lokunamatheliswa kwe-silicone elizwela ukucindezela licishe libe ngu-120°C – liphansi kakhulu kunezinto zokunamathisela ze-acrylic. Le Tg ephansi kakhulu igcina itheyiphu ye-PTFE yokushisa okuphezulu ivumelana nezimo futhi inamathela ngisho naku -70°C, ivimbela ukuqhekeka okuphukayo futhi ivumela ukunamathela okuthembekile ezinhlelweni ze-cryogenic.