Qoondaynta iyo waxqabadka guddiga PTFE

Boodhka Polytetrafluoroethylene (oo sidoo kale loo yaqaanno tetrafluoroethylene board, board Teflon, board Teflon) wuxuu u qaybsan yahay laba nooc: qaabaynta iyo leexashada. Waxaa lagu sameeyay qaboojin. Gudiga rogista PTFE wuxuu ka samaysan yahay cusbi PTFE adigoo riixaya, sinmin iyo diirinta. Badeecaddeedu waxay leedahay adeegsiyo aad u ballaaran iyo astaamo dhammaystiran oo aad u fiican: iska caabin heerkulka sare iyo hooseeya (-192 ℃ -260 ℃), iska caabinta daxalka (aashito xoog leh, alkali xoog leh, aqua regia, iwm), iska caabbinta cimilada, dahaarka sare, sare saliidayn, aan dhegdheg lahayn, Aan sun ahayn iyo sifooyin kale oo aad u fiican.

Xaashida Polytetrafluoroethylene waa isku -dhejis polymer ah oo lagu sameeyay polymerization of tetrafluoroethylene. Qaab dhismeedkeeda waxaa loo fududeeyay sida-[-CF2-CF2-] n-, oo leh xasillooni kiimiko oo aad u fiican iyo iska-caabbinta daxalka (polytetrafluoroethylene oo loo tixraaco PTFE ama F4, waa mid ka mid ah walxaha adkaysi badan u leh adduunka maanta. “ King ”waa magaca guud ee loo yaqaan polytetrafluoroethylene. Waa nooc caag ah oo leh iska caabbinta daxalka oo wanaagsan. Ma saamaynayso asiidhyada la yaqaan, alkalis, Daxalka milixda iyo oksaydhku waa mid aan caawini karin xataa xitaa aqua regia, sidaa darteed waxaa loogu magac daray King Plastic. Marka laga reebo soodhiyamka la shubay iyo fluorine dareere ah, wuxuu u adkaysan karaa dhammaan kiimikooyinka kale.Waxaa si aad ah loogu adeegsadaa qalabka wax lagu xiro ee kala duwan oo u baahan iska caabbinta asiidhyada, alkalis iyo dareeraha dareeraha. iska caabin heerkulka oo heer sare ah (wuxuu ku shaqayn karaa heerkul ah +250 ℃ ilaa -180 ℃ muddo dheer) PTFE lafteedu sun uma aha dadka, laakiin waa Perfluorooctanoate (PFOA), mid ka mid ah alaabta ceeriin ee loo isticmaalo habka wax soo saarka , ayaa loo malaynayaa inuu leeyahay saamayn kansar.

Heerkulka: -20 ～ 250 ℃ (-4 ～+482 ° F), oo u oggolaanaya qaboojin degdeg ah iyo kululeyn, ama hawlgal kale oo qaboojin iyo kululeyn ah.

Cadaadis -0.1 ～ 6.4Mpa (cadaadis taban oo buuxa ilaa 64kgf/cm2) (Fullvacuumto64kgf/cm2)

Wax -soo -saarkeeda ayaa xalliyay dhibaatooyin badan oo ka jiray kiimikada, batroolka, dawooyinka iyo beeraha kale. Polytetrafluoroethylene ayaa shaabadeeya, gaskets, gaskets. Xirmooyinka Polytetrafluoroethylene iyo gaskets waxay ka samaysan yihiin hakinta polytetrafluoroethylene polymerized resin. Marka la barbardhigo balaastikada kale, PTFE waxay leedahay astaamaha iska caabbinta kiimikada, waxaana si weyn loogu isticmaalay sidii shaabad wax lagu xiro iyo walxaha buuxinta. Badeecadeeda kululaynta kuleylka oo dhammeystiran qiyaastii 500 digrii Celsius waa tetrafluoroethylene, hexafluoropropylene iyo octafluorocyclobutane. Badeecooyinkani waxay ku burburin doonaan gaasaska fluorine-ka ku jira oo aad u daxalaysa heerkulka sare.

Isticmaalka xaashida PTFE

Noocyada kala duwan ee badeecooyinka PTFE ayaa door muhiim ah ka qaatay dhaqaalaha qaranka sida warshadaha kiimikada, mashiinnada, elektaroonigga, qalabka korontada, warshadaha milatariga, hawada sare, ilaalinta deegaanka iyo buundooyinka. Guddiga Tetrafluoroethylene wuxuu ku habboon yahay heerkulka -180 ℃ ~+250 ℃. Waxaa inta badan loo adeegsadaa sida qalabka dahaarka korontada iyo xirxirida marka lala xiriiro warbaahinta daxalka leh, kuwa wax lagu dhejiyo ee taageeraya, shaabadda tareenka iyo walxaha saliidaynta. Alaabta guriga ee hodanka ah waxay u adeegsataa warshadaha iftiinka. , Si aad ah loogu isticmaalo kiimikada, dawooyinka, weelasha warshadaha dheeha, haamaha kaydinta, munaaradaha falcelinta, dhuumaha waaweyn ee qalabka dahaarka leh ee dahaarka leh; duulimaadyada, milatariga iyo beeraha kale ee culus; mishiinada, dhismaha, simbiriiriyeyaasha buundada taraafikada, hagayaasha; daabacaadda iyo rinjiyeynta, warshadaha iftiinka, dharka Dharka waxyaalaha lidka-dhejiska ee warshadaha, iwm.