Teepu PTFE ni iwọn otutu jakejado nilo PSA silikoni ti o ṣetọju ifaramọ lati -70°C si 260°C. Awọn eroja apẹrẹ bọtini: Layer iyipada-anchored alakoko (idilọwọ delamination), microstructure okun-erekusu (MQ resini erekusu + polysiloxane lemọlemọfún alakoso), gradient crosslinking (ga-iwuwo akojọpọ Layer fun irako resistance, kekere-iwuwo lode Layer fun kekere-temp tack), ati ooru-imuduro fillers (cerium oxide resistance). Awọn abala siloxane ti a ti yipada Phenyl ṣe didi kirisita ni iwọn otutu kekere, n mu irọrun ṣiṣẹ ni isalẹ -100°C.

Lakoko ibora teepu PTFE, oṣuwọn iyipada epo ti alemora titẹ silikoni jẹ paramita ilana to ṣe pataki. O yara ju → awọ ara, ipele ti ko dara, awọn iho pinholes (ohun elo idẹkùn), ati awọn craters (condensation tabi contaminant-induced). O lọra pupọ → sagging, awọn egbegbe ti o nipọn, ati gbigbẹ lori PTFE-agbara-kekere. Ilana ti o dara julọ: iyipada ibẹrẹ ti o lọra fun ipele ati ona abayo ti nkuta, lẹhinna gbigbẹ isare fun apẹrẹ. Lo awọn olomi-ara ti a dapọ (toluene/xylene + gbigbe-yara) ati iwọn otutu adiro (kekere → alabọde → giga).

Teepu otutu otutu PTFE npadanu ifaramọ lẹhin lilo leralera nitori ibajẹ oju (eruku, epo silikoni), ikuna iṣọpọ alemora ( iyoku), tabi isomọ sobusitireti alailagbara. Awọn

Awọn teepu iwọn otutu ti PTFE ti a fipamọ sinu fọọmu yipo le jiya lati adhesion interlayer (idinamọ) ati gbigbe alemora si ẹgbẹ ti kii-igi. Awọn okunfa gbongbo: PTFE fiimu rirọ iranti ati silikoni PSA nrakò labẹ titẹ ati ooru. Solusan: ẹdọfu yipo gradient – ​​ṣinṣin lori awọn ipele ita, alaimuṣinṣin lori awọn ipele inu – lilo iṣakoso ẹdọfu-pipade. Pari pẹlu ibora itusilẹ, ibi ipamọ to dara (15-40°C, 30-70% RH), ipo petele, ati yiyi yipo mẹẹdogun.

Teepu iwọn otutu giga PTFE ti a lo ninu olubasọrọ ounjẹ gbọdọ bọwọ fun awọn opin iwọn otutu ti o muna: ≤260°C fun lilo igbagbogbo (ko si opin akoko), 260-300°C fun to iṣẹju 30 nikan, ati> 300°C ni eewọ. Teepu naa wa fun olubasọrọ aiṣe-taara nikan (awọn ila ila atẹ, awọn ideri igbanu ooru), kii ṣe murasilẹ ounjẹ taara. Maṣe ṣiṣẹ laisi ẹru ounjẹ (alapapo gbigbẹ). Rọpo ti roro, ofeefee, tabi wọ.

Silikoni titẹ-kókó adhesives (PSA) fun PTFE ga-otutu teepu yatọ o ni opolopo ni ga-otutu išẹ ti ogbo. Methylphenyl silikoni PSA da duro> 85% agbara peeli lẹhin 250 ° C/7 ọjọ, lakoko ti iru methyl boṣewa lọ silẹ si 50-70%. Awọn ọna ẹrọ ti a ṣe imularada (hydrosilylation) nfunni ni iduroṣinṣin to dara julọ ju peroxide-ni arowoto. Fun iṣẹ 200°C+ ti nlọsiwaju, yan afikun-iwosan-iwosan ga-phenyl.

Awọn teepu PTFE titẹ-kókó titẹ (PSA) awọn teepu gbọdọ ṣe ooru lakoko ti o duro alalepo. Ṣafikun awọn ohun elo imudara imudara igbona ṣugbọn o dun ifaramọ. Iwontunwonsi to dara julọ nlo awọn patikulu isokuso ti iyipo (gẹgẹbi egungun adaṣe) ti o dapọ pẹlu awọn patikulu ti o dara (lati kun awọn ofo), titọju ikojọpọ kikun kikun ni oke ala-ilẹ percolation. Yago fun flakes ati awọn okun; nwọn pa tack.

Teepu iwọn otutu giga PTFE n ṣe iranṣẹ ile-iṣẹ PV ni awọn ipa pataki meji: ilodi ilana (idinamọ ifunmọ ṣiṣan EVA lori awọn laminators, boju-boju) ati idabobo igbesi aye gigun (ewé busbar, imuduro apoti ipade). Fun lilo inu titilai, awọn teepu gbọdọ kọja IEC 61215: 1000-2000h ooru ọririn, UV, gigun kẹkẹ gbona (-40 ° C si + 85 ° C), pẹlu silikoni PSA ati isunki <1%.

Teepu iwọn otutu giga PTFE ti a lo si awọn ọbẹ lilẹ ooru ati awọn ila titọ n pese awọn iye mojuto mẹrin: ṣe idiwọ ifaramọ ṣiṣu didà (yokuro downtime), ṣe aabo lilẹ gbowolori ku, imudara ooru / titẹ homogenizes fun awọn edidi dédé, ati dinku ija fiimu. Teepu ti o ni atilẹyin fiberglass (0.13-0.25 mm) pẹlu PSA silikoni (≥260°C) ni a gbaniyanju. Anti-aimi dudu teepu fun ga-iyara ila.

Ohun-ini idena oru omi ti teepu alemora PTFE jẹ ipinnu nipataki nipasẹ awọn abawọn ti a bo (micropores, microcracks, wicking fiber) kuku ju hydrophobicity inu PTFE. Fiimu PTFE mimọ nfunni ni WVTR alabọde nikan. Olona-Layer ti a bo ati lamellar fillers (mica, gilasi flakes) ṣẹda a labyrinth ipa, drastically atehinwa oru gbigbe. Fun ifasilẹ ọriniinitutu giga, pato awọn ideri iwuwo.