PTFE si dabiici ah ugu dheggan fiber galaaska. Iyadoo aan la helin daaweyn sax ah oo dusha sare ah, dahaarka PTFE ayaa shid Maro heerkul sare leh oo PTFE ah ayaa iska fujin doonta sida sharabaad dabacsan. Qarsoodi waxay ku jirtaa walxaha dhamaystirka dusha sare - daawaynta kiimikaad ayaa lagu dabaqaa marada fiberglass ka hor inta aan la damin.
Aokai PTFE waxa ay hagaajisay dhamaystirka kimistariga tobanaan sano ee wax soo saarka. Hagahan waxa uu sharxayaa qaybaha wakiilka muhiimka ah, saamaynta ay ku leeyihiin guryaha muhiimka ah, iyo sababta daawaynta saxda ahi ay tahay mid aan gorgortanka lahayn ee marada PTFE ee tayada sare leh.
Qaybaha Muhiimka ah ee Wakiilada Dhamaystirka Dusha sare
Kahor dahaarka PTFE, dharka fiberglass-ka guud ahaan waxa la mariyaa shaka ka saarida iyo kicinta dusha sare. Kiimikooyinka daawaynta waxaa loo kala saaray isku dhafka kiimikaad sida hoos ku qoran:
Qaybta
Alaabta caadiga ah
Astaamaha & Codsiyada
Wakiilka Isku-xidhka Organosilane (Inta Badan La Isticmaalo)
Isku-ururinta iyada oo loo marayo Si-OH oo leh kooxo hydroxyl ah oo ku yaal dusha sare ee fiber-ka; Kooxaha shaqaynta organic waxay sameeyaan curaarta kiimikaad ama isku xidhid jireed → buundooyinka molecular, oo si wayn kor ugu qaadaya adhesion
Wakiilka Isku-xidhka Titanate
Monoalkoxy & chelate titanates
Iska caabin kulayl aad u fiican oo la jaan qaada nidaamyada fluoropolymer; waxay wanaajisaa qoynta PTFE ee muraayadda, waxay xakamaysaa nabaad-guurka wejiga ka hooseeya heerkulka sare
Wakiilka Isku-xidhka Fluorinated
Perfluoroalkyl triethoxysilane
Tamar dusha aadka u hooseeya, waafaqid PTFE sare; Silsiladda perfluorocarbon ee isku xidhidhisku waxa ay cusboonaysiisaa adhession, hydrophobicity, waxqabadka ka hortagga
Wakiilka Dhamaystirka Chromium Complex
Volan (methacryloyl chromium chloride)
Daaweynta xabagta hore ee caadiga ah; laga baxay sababo la xiriira deegaanka & dib u warshadaynta in kasta oo saamaynta isku xidhka ee muuqata ay jirto
Nano Sol
Silica sol, aluminium sol
Wuxuu abuuraa muuqaal muuqaal qalafsan oo nano-cabbir ah oo ku yaal dusha sare ee fiber-ka ee goobaha lagu xidho farsamada; caadi ahaan lagu daray wakiilada isku-xidhka
Polymeric Primer
Kala firidhsan PTFE/FEP/PFA-molecular-hoose, resin primer oo lagu daray wakiilka isku xidhka
Waxay ku samaysaa lakabka fluoropolymer ku meel gaadhka ah ee aadka u dhuuban ee fiberglass si loo fududeeyo xidhitaanka jaakad sare ee xiga; waxay si aad ah u yaraynaysaa khatarta delamination
Aokai PTFE waxay isticmaashaa isku dhafka gaarka ah ee epoxy silane iyo wakiilada isku xidhka fluorinated ee maro PTFE heerkulkeedu sarreeyo. Habkani waxa uu u adkeysanayaa 260°C adeeg joogto ah oo aan hoos u dhicin wajiyada dhexdooda - oo lagu ansixiyay tijaabooyin kuleyl 3,000-saacadood ah.
Saamaynta Astaamaha Muhiimka ah ee Dharka Heerkulka Sare ee PTFE
U adeegaya sidii dhexda dhex-dhexaadka ah ee u dhexeeya fiber galaas inorganic iyo fluoroplastic organic, darajada wakiilka daawaynta iyo habaynta ayaa xukuma guud ahaan waxqabadka alaabta la dhammeeyey.
1. Xoog ku dheggan & Diirka Waarta
Tayada Daawaynta
Xoogga diirka
Habka Fashilka
Si liidata loo daawayn
<2 N/cm
Xumbo dahaarka, delamination ka dib rogid/laabid ama soo-gaadhista heerkul sare; nolosha adeeg gaaban
Wakiilka isku xidhka la hagaajiyay
4-8+ N/cm
Isku-xidhka kiimikada + isku-xidhka jirka; dahaarka ayaa iska caabiya diirinta marka la eego dabacsanaanta soo noqnoqda iyo shoogga kulaylka
Beddelka silane lebbiska ah wuxuu kor u qaadaa faafinta emulsion PTFE iyo qoynta dusha sare ee fiber → daahan is haysta oo joogto ah oo leh godad yar yar iyo microcracks → muhiim u ah korantada burburka iyo awooda dahaarka
Kiimikooyinka daawaynta wasakhaysan ee Hygroscopic ama ion waxay kor u qaadaan luminta dielectric. Silane-nadiifinta sare leh ayaa loo qaatay marada PTFE-fasalka-premium si loo yareeyo faragelinta wasakhda.
Qaadashada furaha: Wakiilka dhamaystirka dusha sare waa tignoolajiyada udub dhexaadka u ah PTFE wax soo saarka maro heerkul sare ah. Ay maamulaan wakiilada isku xidhka organosilane, kiimikooyinkani waxay dhisaan isku xidhka molecular ee isku xidhka inorganic-organic si ay u xalliyaan ku dhegganaanta liita ee PTFE ee fiberglass. Waxay aasaas ahaan go'aamiyaan xoogga diirka, cimriga dabacsanaanta, caabbinta kulaylka, dahaarka korantada, iyo firfircoonaanta kiimikada.
Marka la soo koobo , wakiilka dhamaystirka dusha sare ayaa lagu dabaqay dharka fiberglass ka hor inta aan la daboolin PTFE ma aha faahfaahin yar - waa aasaaska tayada heerkulka sare ee PTFE. Walxaha isku xidha Organosilane (amino, epoxy, fluorinated) waxay abuuraan buundooyin molecular muhiim ah oo u dhexeeya fiber galaas iyo PTFE, kor u qaadaya xoogga diirka <2 N/cm ilaa 4-8+ N/cm. Daawaynta saxda ah waxay sidoo kale wanaajisaa caabbinta kulaylka (260°C+), cufnaanta dahaarka, waxqabadka dielectric, iyo caabbinta kiimikada.
Markaad dooranayso dharka PTFE ee codsiyada dalbanaya, waydii wax ku saabsan kiimikada dhamaystirka dusha sare - waxay si toos ah u saameyneysaa nolosha adeegga iyo kalsoonida. Iska ilaali substrate-ka aan la daawayn ama si liidata loo daweeyay, kuwaas oo baabi'in doona kulaylka iyo walbahaarka farsamada.
Ma u baahan tahay PTFE maro heerkul sare leh oo tayo sare leh oo dusha sare la hagaajiyay? Aokai PTFE waxay isticmaashaa qaabaynta wakiilada isku xidhka sare ee ku dheggan iyo cimri dhererka Nala soo xiriir shuruudaha codsigaaga.
Wixii faahfaahin ah oo faahfaahsan, hagida codsiga, iyo xalalka la habeeyey ee badeecada buuxda: PTFE maro heerkul sare ah, sharooto dhejis ah PTFE, suunka mesh PTFE, suunka fiyuuska ah ee aan kala go 'lahayn, maro PTFE-daran oo hal dhinac ah, suunka gudbinta kulaylka u adkaysta & maro heerkul sare leh , fadlan nala soo xiriir:
