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.

Silicone yumuvuduko ukabije (PSA) kuri kaseti ya PTFE yubushyuhe bwo hejuru iratandukanye cyane mubikorwa byo gusaza cyane. Methylphenyl silicone PSA igumana> 85% imbaraga zishishwa nyuma yiminsi 250 ° C / 7, mugihe ubwoko bwa methyl busanzwe bugabanuka kugera kuri 50-70%. Sisitemu yongeyeho (hydrosilylation) itanga ihame ryiza kuruta peroxide-yakize. Kumurimo uhoraho 200 ° C +, hitamo inyongera-yakize-amanota menshi.

Amashanyarazi ya PTFE yerekana ubushyuhe (PSA) kaseti igomba gukora ubushyuhe mugihe ikomeje. Ongeraho ibyuzuza bizamura ubushyuhe bwumuriro ariko bikomeretsa gufatira. Impirimbanyi nziza ikoresha uduce duto duto (nka skeleton yuyobora) ivanze nuduce twiza (kugirango twuzuze icyuho), igumane ibyuzuye byuzuye hejuru yurwego rwa percolation. Irinde flake na fibre; Bica tack.

PTFE yubushyuhe bwo hejuru ikorera inganda za PV mubikorwa bibiri bitandukanye: inzira ikoreshwa (irinda EVA kurengerwa na laminator, mask yo kugurisha) hamwe no kuramba kuramba (gupfunyika busbar, guhuza agasanduku). Kugirango ukoreshe imbere imbere, kaseti igomba kunyura IEC 61215: 1000-2000h ubushyuhe butose, UV, gusiganwa ku magare (-40 ° C kugeza + 85 ° C), hamwe na silicone PSA no kugabanuka <1%.

PTFE yubushyuhe bwo hejuru ikoreshwa kumyuma ifunga ubushyuhe hamwe nudupapuro twa kashe itanga indangagaciro enye zingenzi: irinda ifumbire ya pulasitike yashonze (ikuraho igihe cyo hasi), irinda kashe ihenze ipfa, ihuza ubushyuhe / umuvuduko wa kashe ihoraho, kandi igabanya ubukana bwa firime. Birasabwa gufata kaseti ya fibre (0.13-0,25 mm) hamwe na silicone PSA (≥260 ° C). Anti-static umukara kaseti kumirongo yihuta.

Inzitizi y'amazi ya barrière ya PTFE ifata kaseti igenwa cyane cyane nubusembwa (micropores, microcrack, fibre fibre) aho kuba hydrophobicity ya PTFE. Filime nziza ya PTFE itanga gusa WVTR yo hagati. Ibice byinshi byuzuzanya hamwe na lamellar yuzuza (mika, ibirahuri by'ibirahure) bitera labyrint, bigabanya cyane kwanduza imyuka. Kugirango ushireho ubuhehere bwinshi, vuga neza.

Kurwanya creep ya PTFE yubushyuhe bwo hejuru yubushyuhe munsi yumutwaro muremure uhoraho (cyane cyane kuri 200-260 ° C) bigenwa nimpamvu ebyiri: silicone PSA ihuza ubucucike (guhuza kwinshi birinda gutemba) hamwe nubwoko bwa substrate (fibre yububiko-bushimangira PTFE irwanya ubukonje bukonje; Ibifunga bidahuye birananirana vuba mubushyuhe bwinshi. Gufata neza cyane byongera ibyago byo kunyerera.

Kuri PTFE kaseti yubushyuhe bukoreshwa mugukoresha abrasive kunyerera ya porogaramu, ibisanzwe bitari inkoni hamwe nubushyuhe ntibihagije. Ibipimo byingenzi byo gutoranya: Gutakaza ibibyimba (<15 mg / 1000 cycle), byuzuye byuzuye bya PTFE (karubone / grafite / MoS₂), amakuru ya PV ntarengwa, imbaraga zubutaka (≥200 N / cm), hamwe nuburinganire bwubuso (Ra 0.2-0.4 μm). Kurinda impande zose hamwe no guhuza byuzuye nibyingenzi kuramba.

PTFE substrate isanzwe irwanya umunyu utera (kwinjiza amazi <0.01%). Nyamara, imikorere ya kaseti muri rusange biterwa nubwoko bufatika: silicone PSA ihanganira ibidukikije byo mu nyanja (ibizamini byo gutera umunyu 500-1000h,> kubika 80%); acrylic PSA birananirana. Kuvura neza kubutaka, kubusa kubusa, no gufunga impande hamwe na silicone kashe nibyingenzi kugirango byizere igihe kirekire kurubuga rwa interineti.