Gukoresha kaseti ya PTFE biterwa nimpamvu enye: gushiraho ifatizo (ubwinshi bwambukiranya imipaka, kwimuka kwa silicone nkeya, imiterere ya microphase kugirango isubirwemo), substrate anchoring (surface activation + primer kugirango wirinde kwimura neza), gutwikira inyuma (kurekura ibice kugirango urinde ibifata mugihe utabishaka), hamwe no gufata neza (hejuru yubushuhe bukwiye). Amazi yogejwe n'amazi yahinduwe arashobora gukira> 90% tack nyuma yo gukora isuku.

Fiberglass umwenda wo kugabanya ubushyuhe nintandaro yambere ya PTFE kaseti ya stabilite. Ku bushyuhe bwa PTFE (360-400 ° C), impungenge zo kuboha zisigaye. Niba bidakumiriwe, imyenda iragabanuka; niba bikumiriwe, imihangayiko yihishe ifunze, itera kugabanuka nyuma mugihe cyo gukiza (150-200 ° C) no gushyushya amaherezo. Igisubizo: koresha fiberglass yabanjirije ubushyuhe hamwe na <0.5% kugabanuka kuri 400 ° C, ukuraho imihangayiko isigaye mbere yo gutwikira.

Ubushuhe bugari bwa PTFE kaseti isaba silicone PSA ikomeza gufatana kuva kuri 70 ° C kugeza 260 ° C. Ibintu by'ingenzi byashushanyijeho: primer-anchored layer layer (irinda gusiba), microstructure yo mu kirwa cyo mu nyanja (MQ resin birwa + polysiloxane ikomeza icyiciro), guhuza buhoro buhoro (urwego rwimbere rwimbere rwo guhangana n’ibikururuka, urwego ruciriritse rwo hasi rwihuta), hamwe nuzuza ubushyuhe (okiside ya cerium). Igice cya fenyl cyahinduwe na siloxane irwanya ubushyuhe buke bwo korohereza ibintu, bigatuma ihinduka ryoroshye -100 ° C.

Gukata kumpera yimiterere ya PTFE yubushyuhe bwo hejuru cyane bigira ingaruka zifatika zifatika hamwe no kuzamura impande mugihe cyo kubisaba. Kunyerera nabi (blade idahwitse, inguni idakwiye) itera kole ya kole, ikanagabanya impande zombi zifata neza, kandi ikagaragaza ibibyimba bya fiberglass - biganisha ku gucika intege, guhuza imbaraga, no guterura munsi yubushyuhe cyangwa impagarara. Isura yanyuma idasanzwe (wavy, isohoka) itera gukwirakwiza umuvuduko muke, gutwara ibinyabiziga bifata mugihe cyo kubika. Isura nziza yanyuma isa neza, ihindagurika, kandi nta byangiritse - ikora nk'ikidodo gifunga ibifatika kandi kigahuza impande zose.

Mugihe cya kaseti ya PTFE, igipimo cya volatilisation yumuti wa silicone yumuvuduko ukabije ni ikintu gikomeye. Byihuta cyane → uruhu rwo hejuru, kuringaniza nabi, pinholes (umutego wafashwe), hamwe na crater (kondegene cyangwa iterwa n'umwanda). Biratinda cyane → kugabanuka, impande zibyimbye, no gutonyanga hejuru-imbaraga-PTFE. Ingamba nziza: gahoro gahoro guhindagurika kugirango uringanize kandi uhunge, hanyuma byihuta byumye kugirango bibe. Koresha imvange ivanze (toluene / xylene + yumisha vuba) hamwe nubushyuhe bwa feri ya gradient (hasi → hagati → hejuru).

PTFE yubushyuhe bwo hejuru butakaza gufatira nyuma yo gukoreshwa inshuro nyinshi kubera kwanduza hejuru (ivumbi, amavuta ya silicone), kunanirwa gufatana hamwe (ibisigara), cyangwa guhuza insimburangingo. Igisubizo: silicone-ihuza cyane ya silicone PSA (kwimuka gake, kuringaniza tack / gufata imbaraga), kuvura primer kuri substrate ya PTFE, gufunga fiberglass yuzuye, no gufata neza (hejuru yisuku, igishishwa gikonje, 180 ° inguni). Igeragezwa ryinshi ryemeza iterambere.

PTFE yubushyuhe bwo hejuru yabitswe mubihe byagenwe (10-25 ° C, 40-70% RH, kure ya UV / umuvuduko ukabije) ifite ubuzima busanzwe bwamezi 3-6 (amanota yo hejuru kugeza kumezi 12). Inzira nyamukuru yo gutesha agaciro: imbaraga zishishwa ntizigomba kugabanuka munsi ya 70% yagaciro kambere; nta bisigara bifata nyuma yo gukuraho ubushyuhe bwo hejuru; nta karuboni cyangwa gucika ku bushyuhe bwagenwe. Igenzura ryihuse: intoki idashaka, 260 ° C ikizamini gisigaye, hamwe nikizamini cyo kugabanuka.

Kasete ya PTFE irashobora guteza imbere guhuza (guhagarika) no kwimura mugihe cyo kubika igihe kirekire. Impamvu: PTFE firime ya elastique yibuka na silicone PSA kunyerera munsi yumuvuduko / ubushyuhe. Kwirinda: guhindagurika gahoro gahoro (hanze yimbere, irekuye imbere) mugihe cyo gukora, hiyongereyeho igipfundikizo cyo kurekura kuruhande rudafatanye. Ubike kuri -15 ° C kugeza 40 ° C, 30-70% RH, utambitse kumurongo, uzunguruka buri gihembwe. Ku manota manini yometseho, ongeramo impapuro zisohora hagati yuburyo.

Kanda ya PTFE yubushyuhe bwo hejuru yabitswe muburyo bwa muzingo irashobora kubabazwa no gufatana hagati (guhagarika) no kwimura ibiti kuruhande rutari inkoni. Imizi itera: PTFE firime ya elastique yibuka na silicone PSA igenda munsi yumuvuduko nubushyuhe. Igisubizo: gahoro gahoro ihindagurika - ifatanye kumurongo winyuma, irekuye kumurongo wimbere - ukoresheje kugenzura gufunga-gufunga. Uzuza hamwe no gusohora, kubika neza (15-40 ° C, 30-70% RH), gushyira kuri horizontal, no kuzunguruka buri gihembwe.

PTFE yubushyuhe bwo hejuru bukoreshwa muguhuza ibiryo bigomba kubahiriza imipaka yubushyuhe bukabije: ≤260 ° C kugirango ikoreshwe ubudahwema (nta gihe ntarengwa), 260-300 ° C muminota 30 gusa, na> 300 ° C birabujijwe. Kaseti ni iy'itumanaho ritaziguye gusa (tray liners, igifuniko cy'ubushyuhe), ntabwo ipfunyika ibiryo. Ntuzigere ukora udafite umutwaro wibiryo (gushyushya byumye). Simbuza niba byijimye, umuhondo, cyangwa wambaye.