PTFE pamwamba mankhwala kwa kugwirizana adhesion amagwiritsa ntchito njira zikuluzikulu ziwiri: mkulu-kutentha kusungunuka (apamwamba nyengo kukana, 9.5 MPa mphamvu ndi coupling wothandizila, koma kutulutsa mpweya poizoni) ndi sodium-naphthalene etching (5 MPa mwamsanga adhesion, yopapatiza 24-48 ora zenera, zinyalala zoopsa). Sankhani potengera kuwongolera chilengedwe komanso nthawi yayitali vs.

Kuyeretsa ndi kukonza bwino kumakulitsa moyo wa nsalu za PTFE zotentha kwambiri. Chotsani mukatha kugwiritsa ntchito komanso mukazizilitsa. Gwiritsani ntchito maburashi ofewa, zotsukira zopanda ndale, kapena mowa popaka madontho. Osagwiritsa ntchito ma asidi amphamvu/ma alkali, bulichi, kapena zopalira zitsulo. Kupaka mafuta okhazikika a silicone kumachepetsa kuvala. Tsatirani malangizowa kuti mupewe kuwonongeka kwa zokutira.

Tepi yotentha kwambiri ya PTFE ili ndi kukana koyipa kwa radiation ya ionizing. Pamawonekedwe a 1 kGy a gamma, mphamvu zamphamvu zimatsika kufika ~ 25% yapachiyambi. Ndikoyenera kokha kwa malo otsika kwambiri (chakudya / kutseketsa kwachipatala <10 kGy). Pamakampani a nyukiliya kapena zoyenda zakuthambo, gwiritsani ntchito polyimide kapena PEEK m'malo mwake.

Kuyesa PTFE emulsion khalidwe kumafuna zizindikiro zisanu ndi chimodzi zofunika: okhutira olimba (60 ± 2% pa T/FSI 067-2021), pH (9.0-11.0), tinthu kukula kugawa (laser diffraction/DLS), mamasukidwe akayendedwe (12-30 mPa · s pa 25 ° C), bata (centrifugal, freeze-thaw, mawonekedwe). Bukuli limafotokoza njira zoyeserera zoyeserera pagawo lililonse.

Kwa PTFE matepi otentha kwambiri pansi pa kumizidwa kwa nthawi yaitali, gawo lapansi la PTFE limakhalabe ndi mankhwala, koma zomatira ndizopanda mphamvu. Madzi amafooketsa silikoni PSA; madzi amchere amathandizira kuti dzimbiri. Pa mankhwala aukali, zomatira za fluorosilicone kapena perfluoropolyether - kapena tepi ya PTFE yopanda zomatira - ndiyofunika. Kutaya mphamvu kwa peel mpaka 40% pambuyo pa maola 48 m'madzi.

Tepi ya PTFE yotentha kwambiri yomwe imagwiritsidwa ntchito pokhudzana ndi chakudya iyenera kukhala mkati mwa malire omwe atchulidwa kutentha: ≤260 ° C kuti agwiritsidwe ntchito mosalekeza, ≤300 ° C kwa nsonga zazifupi (mphindi), ndipo osapitirira 327 ° C (kuwola). Malamulo a FDA ndi EU samatchula malire anthawi zonse - nthawi yolumikizana yotetezeka imadalira kutentha ndipo iyenera kutsimikiziridwa ndi mayeso osamukira kutengera momwe zinthu ziliri.

Nsalu zotentha kwambiri za PTFE ndi nsalu za silikoni zonse zimagwiritsa ntchito nsalu za fiberglass ngati maziko koma zimasiyana pakuyatira (PTFE resin vs silicone raba). PTFE imapambana pakusagwira ndodo, kukana kuvala, komanso kukana mankhwala mpaka 260°C. Nsalu ya silicone imapereka kusinthasintha kwapamwamba, kutsekemera kwa magetsi, ndi kukana moto (mpaka 230 ° C). Sankhani malinga ndi zomwe mumakonda.

Nsalu ya PTFE yotentha kwambiri (PTFE membrane material) ndi chisankho choyambirira pamamangidwe olimba. Ubwino waukulu: zaka 30+ za moyo wapanja, kudzitsuka pawokha (madzi amvula amatsuka dothi), kufalitsa kuwala kofewa (6-13%), Kuyeza moto kwa Gulu A, ndi mphamvu ngati chitsulo pansi pa 1.5 kg/m². Amagwiritsidwa ntchito m'mabwalo amasewera, ma eyapoti, ndi nyumba zodziwika bwino padziko lonse lapansi.

Tepi ya PTFE yotentha kwambiri imafuna kusungidwa koyenera kuti ikhale yomatira, kusinthasintha, ndi kutulutsa ntchito. Zofunikira zazikulu ndi kuwongolera kutentha (10-30 ° C), chinyezi chochepera 60%, kupewa kuwala, kudzipatula kwamankhwala, kuyika molunjika, ndi mpweya wabwino. Tsatirani kasamalidwe ka FIFO ndikuwunika pafupipafupi.

Kusankha tepi yoyenera ya PTFE yotentha kwambiri ya 3D chosindikizira chotentha bedi kumafuna kuyang'ana pa zizindikiro zinayi zazikulu: kukana kutentha (mpaka 260 ° C+), fiberglass-reinforced substrate (0.18mm yabwino), zomatira za silicone zopanda ndodo pamwamba, ndi m'lifupi / kulolera koyenera. Bukuli limakuthandizani kuti mupewe kupotoza, kutsalira, ndi kulephera kusindikiza.