Ukwelashwa kwe-PTFE ebusweni bokunamathela kokubopha kusebenzisa izindlela ezimbili eziyinhloko: ukuncibilika kwezinga lokushisa eliphezulu (ukumelana nesimo sezulu esiphezulu, amandla angu-9.5 MPa ane-ejenti yokuhlanganisa, kodwa kukhishwa amagesi anobuthi) kanye ne-sodium-naphthalene etching (5 MPa ukunamathela ngokushesha, iwindi elincane lamahora angu-24-48, imfucuza eyingozi). Khetha ngokusekelwe ekulawuleni imvelo kanye nokusebenza kwesikhathi eside ngokumelene nokusebenza kwesikhathi esifushane.

Ukuhlanzwa nokugcinwa ngendlela efanele kwandisa impilo yendwangu ye-PTFE enezinga eliphezulu lokushisa. Hlanza ngemva kokusetshenziswa nangemuva kokupholisa. Sebenzisa amabhulashi athambile, okokuhlanza okungathathi hlangothi, noma utshwala ukuze uthole amabala. Ungalokothi usebenzise ama-asidi/ama-alkali aqinile, i-bleach, noma ama-metal scrapers. Ukugcoba uwoyela we-silicone njalo kunciphisa ukuguga. Landela le mihlahlandlela ukuze ugweme ukulimala kokumboza.

Itheyiphu yokushisa ephezulu ye-PTFE inokumelana okungekuhle emisebeni ye-ionizing. Ngokuchayeka kwe-gamma engu-1 kGy kuphela, amandla e-tensile ehla aze afike ku-~25% owangempela. Ifaneleka kuphela ezindaweni ezinedosi ephansi (ukuvalwa kokudla/kwezokwelapha <10 kGy). Embonini yenuzi noma imikhumbi-mkhathi, sebenzisa i-polyimide noma i-PEEK esikhundleni salokho.

Ukuhlola ikhwalithi ye-emulsion ye-PTFE ihlanganisa izinkomba eziyisithupha ezibalulekile: okuqukethwe okuqinile (60±2% i-T/FSI 067-2021 ngayinye), i-pH (9.0-11.0), ukusatshalaliswa kosayizi wezinhlayiyana (i-laser diffraction/DLS), i-viscosity (12-30 mPa·s ku-25°C), ukuzinza (i-centrifugal, ukubukeka kweqhwa, ukugqama kwe-thaw). Lo mhlahlandlela uhlanganisa izindlela zokuhlola ezijwayelekile zepharamitha ngayinye.

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. Ngamakhemikhali 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 yezinga lokushisa eliphezulu ye-PTFE esetshenziswa ezinhlelweni zokuxhumana zokudla kufanele ihlale ngaphakathi kwemikhawulo ebekiwe yokushisa: ≤260°C ukuze isetshenziswe ngokuqC (ukubola). Imithetho ye-FDA ne-EU ayicacisi umkhawulo wesikhathi ojwayelekile - ubude bokuxhumana obuphephile buncike ezingeni lokushisa futhi kufanele kuqinisekiswe izivivinyo zokufuduka ezilingisa izimo zangempela.

Indwangu ye-PTFE enezinga eliphezulu lokushisa eliphezulu nendwangu ye-silicone kokubili kusebenzisa indwangu ye-fiberglass njengesisekelo kodwa ihlukile ezintweni zokumboza (i-PTFE resin vs irabha ye-silicone). I-PTFE iphumelela kakhulu ekungabambeni, ukumelana nokugqoka, kanye nokumelana namakhemikhali kufika ku-260°C. Indwangu ye-Silicone inikeza ukuguquguquka okuphakeme, ukufakwa kukagesi, nokumelana nomlilo (kufika ku-230°C). Khetha ngokusekelwe kokubalulekile kwakho.

Indwangu yokushisa ephezulu ye-PTFE (i-PTFE membrane material) iyinketho ephambili yezakhiwo eziqinile. Izinzuzo eziyinhloko: iminyaka engu-30+ yokuphila kwangaphandle, indawo ezihlanzekile (amanzi emvula ageza ukungcola), ukudlulisa ukukhanya okuthambile (6-13%), isilinganiso somlilo Sekilasi A, namandla afana nensimbi angaphansi kuka-1.5 kg/m². Isetshenziswa ezinkundleni zemidlalo, ezikhumulweni zezindiza, nezakhiwo eziyisakhiwo sodumo emhlabeni jikelele.

Itheyiphu ye-PTFE yokushisa okuphezulu idinga isitoreji esifanele ukuze igcine ukunamathela kwayo, ukuguquguquka, nokusebenza kokukhululwa. 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.

Ukukhetha itheyiphu elungile ye-PTFE yokushisa okuphezulu kombhede oshisayo wephrinta ye-3D kudinga ukugxila ezinkomba ezine ezibalulekile: ukumelana nezinga lokushisa (kufika ku-260°C+), i-fiberglass-reinforced substrate (0.18mm ekahle), i-silicone enamathelayo esekelayo enendawo enganamathelanga phezulu, nobubanzi/ukubekezela okufanele. Lo mhlahlandlela ukusiza ukuthi ugweme ukungqubuzana, izinsalela, nokuhluleka kokuphrinta.