Ubuvuzi bwa PTFE kubwo guhuza bifashisha uburyo bubiri bwingenzi: gushonga ubushyuhe bwo hejuru (guhangana nikirere cyiza, imbaraga za MPa 9.5 hamwe na agent ihuza, ariko ikarekura imyuka yubumara) hamwe na sodium-naphthalene (5 MPa guhita ifata, idirishya ryamasaha 24-48, imyanda iteje akaga). Hitamo ukurikije kugenzura ibidukikije nigihe kirekire nibikorwa bigufi.

Gusukura neza no kubungabunga byongera ubuzima bwimyenda yubushyuhe bwo hejuru. Isuku nyuma yo kuyikoresha na nyuma yo gukonja. Koresha umwanda woroshye, ibikoresho bidafite aho bibogamiye, cyangwa inzoga kubirindiro. Ntuzigere ukoresha acide ikomeye / alkalis, byakuya, cyangwa ibyuma bisakara. Amavuta ya silicone asanzwe amavuta agabanya kwambara. Kurikiza aya mabwiriza kugirango wirinde kwangirika.

PTFE yubushyuhe bwo hejuru ifite imbaraga zo kurwanya imirasire ya ionizing. Kuri 1 kGy gamma yerekanwe gusa, imbaraga

Gupima ubwiza bwa PTFE burimo ibipimo bitandatu byingenzi: ibintu bikomeye (60 ± 2% kuri T / FSI 067-2021), pH (9.0-11.0), gukwirakwiza ingano yingingo (laser diffaction / DLS), viscosity (12-30 mPa · s kuri 25 ° C), gutuza (centrifugal, ubushyuhe, gukonjesha-thaw), no kugaragara. Aka gatabo gakubiyemo uburyo busanzwe bwo gupima kuri buri kintu.

Kuri kaseti ya PTFE yubushyuhe bwo hejuru yibiza igihe kirekire, substrate ya PTFE ikomeza kuba inert ya chimique, ariko igipande gifatika nikintu kidakomeye. Amazi agabanya silicone PSA; amazi yumunyu yihutisha ruswa. Ku miti ikaze, fluorosilicone cyangwa perfluoropolyether yifata - cyangwa kaseti ya PTFE idafite imiti - irakenewe. Gutakaza imbaraga zigera kuri 40% nyuma yamasaha 48 mumazi.

PTFE yubushyuhe bwo hejuru bukoreshwa mubisabwa guhuza ibiryo bigomba kuguma mubipimo byubushyuhe bwasobanuwe: 60260 ° C kugirango ukoreshe ubudahwema, 00300 ° C kumpinga ngufi (iminota), kandi ntuzigera hejuru ya 327 ° C (kubora). Amabwiriza ya FDA na EU ntagaragaza igihe ntarengwa - igihe cyo guhura neza giterwa nubushyuhe kandi bigomba kugenzurwa nibizamini byimuka bigereranya ibihe bifatika.

Imyenda ya PTFE yubushyuhe bwo hejuru hamwe nigitambara cya silicone byombi bikoresha umwenda wa fiberglass nkibanze ariko bitandukanye mubikoresho byo gutwikira (PTFE resin vs silicone rubber). PTFE irusha abandi inkoni, kwambara, no kurwanya imiti igera kuri 260 ° C. Umwenda wa Silicone utanga ibintu byoroshye guhinduka, kubika amashanyarazi, no kurwanya umuriro (kugeza kuri 230 ° C). Hitamo ukurikije ibyo ushyira imbere.

Imyenda ya PTFE yubushyuhe bwo hejuru (PTFE membrane material) ni ihitamo ryiza kubwubatsi bubi. Ibyiza byingenzi: ubuzima bwimyaka 30+ yo hanze, kwisukura hejuru (amazi yimvura yoza umwanda), kohereza urumuri rworoshye (6-13%), Urwego rwumuriro A, nimbaraga zisa nicyuma munsi ya 1.5 kg / m². Ikoreshwa muri stade, ibibuga byindege, ninyubako zishushanyije kwisi yose.

PTFE yubushyuhe bwo hejuru busaba ububiko bukwiye kugirango bugumane, bworoshye, kandi burekure imikorere. Ibisabwa byingenzi birimo kugenzura ubushyuhe (10-30 ° C), ubuhehere buri munsi ya 60%, kwirinda urumuri, kwigunga imiti, gushyira vertical, no guhumeka. Kurikiza imicungire ya FIFO kandi ugenzure buri gihe.

Guhitamo iburyo bwa PTFE yubushyuhe bwo hejuru kuburiri bushyushye bwa printer ya 3D bisaba kwibanda kubipimo bine byingenzi: kurwanya te ya fiberglass-yongerewe imbaraga (0.18mm nziza), silicone ifata inyuma hamwe nubuso butagaragara, hamwe n'ubugari bukwiye / kwihanganira. Aka gatabo kagufasha kwirinda kurigata, ibisigara, no gucapa kunanirwa.