PTFE baya mannewa a zahiri ga fiber gilashi. Ba tare da ingantaccen magani ba, shafi na PTFE akan Tufafin zafin jiki na PTFE zai bare kamar safa da safa. Sirrin ya ta'allaka ne a cikin abubuwan da aka kammala saman - magungunan sinadarai da ake amfani da su akan masana'anta na fiberglass kafin sutura.
Wadannan jami'ai - da farko organosilane hada biyu jamiái - aiki a matsayin kwayoyin gadoji, chemically bonding da inorganic gilashin fiber zuwa Organic PTFE. Zaɓin wakili, ƙaddamarwarsa, da tsarin warkewa yana ƙayyade ƙarfin kwasfa, juriya na zafi, sassauƙan rayuwa, da aikin dielectric.
Aokai PTFE ya inganta saman kammala sinadarai a cikin shekarun da suka gabata na samarwa. Wannan jagorar yayi bayanin manyan nau'ikan wakilai, tasirin su akan mahimman kaddarorin, da kuma dalilin da yasa ba za a iya yin shawarwarin dacewa da kyallen PTFE mai inganci ba.
Babban Rukunin Ma'aikatan Kammala Sama
Kafin PTFE shafi, fiberglass masana'anta gabaɗaya jurewa kakin cirewa da kunnawa saman. Ana rarraba sinadarai na jiyya ta hanyar abun ciki na sinadarai kamar haka:
Condenses ta hanyar Si-OH tare da ƙungiyoyin hydroxyl akan filayen fiber gilashi; Ƙungiyoyin ayyuka na kwayoyin halitta suna samar da haɗin gwiwar sinadarai ko haɗin jiki → gadoji na kwayoyin halitta, suna ƙarfafa mannewa sosai.
Titanate Coupling Agent
Monoalkoxy & chelate titanates
Kyakkyawan juriya na zafi mai jituwa tare da tsarin fluoropolymer; yana inganta wetting PTFE akan fiberglass, yana hana lalatawar fuska a ƙarƙashin babban zafin jiki
Wakilin Haɗaɗɗen Fluorinated
Perfluoroalkyl triethoxysilane
Ƙarfin ƙasa mai ƙarancin ƙarfi, ingantaccen karfin PTFE; sarkar perfluorocarbon entanglement haɓaka mannewa, hydrophobicity, antifouling yi
Wakilin Kammala Complex Chromium
Volan (methacryloyl chromium chloride)
Classic farkon m magani; kawar da shi saboda matsalolin muhalli & sake amfani da su duk da ingantaccen tasirin haɗin gwiwa
Nano Sol
Silica sol, alumina sol
Yana ƙirƙira ƙaƙƙarfan hoto na nano-sikelin akan saman fiber don wuraren ɗorawa na inji; yawanci hade da hadewa jamiái
Polymeric Primer
PTFE/FEP/PFA mai ƙananan nauyi-nauyi, guduro na farko da aka haɗe da wakili mai haɗawa biyu
Yana samar da Layer na wucin gadi na fluoropolymer na bakin ciki akan fiberglass don sauƙaƙe haɗin kai na gaba; yana rage haɗarin delamination sosai
Aokai PTFE yana amfani da haɗin mallakar mallaka na epoxy silane da abubuwan haɗaɗɗen nau'in fluorinated don mayafin PTFE ɗin mu mai zafi. Wannan tsarin yana jure wa ci gaba da sabis na 260°C ba tare da lalatawar fuska ba - ingantacciyar gwajin tsufa na awoyi 3,000.
Tasiri kan Abubuwan Abubuwan Mahimmanci na Tufafin Maɗaukakin Zazzabi na PTFE
Yin hidima a matsayin matsakaicin tsaka-tsakin tsaka-tsaki tsakanin fiber na gilashin inorganic da kwayoyin fluoroplastic, matakin wakili na jiyya da sarrafawa sun mamaye aikin gamammen samfur.
1. Ƙarfin Adhesion & Ƙarfin Kwasfa
Ingancin Jiyya
Ƙarfin Kwasfa
Yanayin gazawa
Ba a kula da shi / rashin kulawa
<2 N/cm
Rufe kumfa, delamination bayan mirgina / nadawa ko yanayin zafi mai zafi; gajeriyar rayuwar sabis
Ingantacciyar wakili mai haɗa haɗin gwiwa
4-8+ N/cm
Haɗin sinadarai + haɗakar jiki; shafi yana ƙin kwasfa a ƙarƙashin maimaita jujjuyawar da zafin zafi
Mahimman tasiri: Ƙarfin kwasfa shine ƙwaƙƙwaran dalili don sassauƙa rayuwar gajiya da juriya.
2. Resistance Heat & Thermal Kwanciyar hankali
Maɗaukakin haɗaɗɗun zafin jiki mai ƙarfi (wanda ya ƙunshi benzene ko tsarin heterocyclic, misali, wasu epoxy & acyloxy silanes) suna jure wa ci gaba da 260 ° C da kololuwar nan take> 300 ° C - daidaita yanayin sabis na PTFE.
Additives na al'ada na al'ada suna bazuwa a yanayin zafi mai tsayi → ɓoyayyiyar fuska, launin rawaya, launi mai laushi.
Ma'anar aikace-aikacen: Don aikace-aikacen zafin jiki mai girma, tabbatar da cewa wakilin ƙarewa kanta yana da kwanciyar hankali, ba kawai murfin PTFE ba.
3. Rufaffen Ƙarfafawa & Ayyukan Dielectric
Uniform silane gyare-gyare yana haɓaka PTFE emulsion yadawa da wetting a kan fiber surface → ci gaba da m shafi tare da m pinholes da microcracks → m ga rushewar wutar lantarki da kuma rufi damar.
Hygroscopic ko ion gurbataccen sinadarai na jiyya suna haifar da asarar dielectric. Ana ɗaukar silane mai tsafta don ƙirar PTFE mai ƙima don rage tsangwama.
4. Chemical Resistance & Danshi Barrier
Nau'in Wakili
Tasiri
Fluorinated hadawa wakili
Abubuwan da ke tattare da hydrophobic & oleophobic → yana toshe shigar da danshi da sinadarai masu lalata → yana inganta tsufa-zafi, acid & alkali juriya.
Inorganic nano sol
Babban shinge yana kare fiber gilashi daga etching ta hydrofluoric acid da kafofin watsa labarai masu lalata
5. Sassauci & Fabricability
Factor
Tasiri
Abubuwan da aka yi amfani da su fiye da kima ko tsattsauran ra'ayi masu wadatar haɗin gwiwa
Tufafi mai kauri, yana hana yin tela na gaba da ayyukan nade
Ƙirƙira tare da dogon silanes mai sassauƙa
Yana riƙe dacewa ba tare da sadaukar da aikin haɗin kai ba
Bayanan kula: Yawan adadin da aka yi amfani da shi dole ne a daidaita shi a hankali - kadan yana haifar da mannewa mara kyau, da yawa yana rage sassauci.
Takaitawa - Me yasa Ma'aikatan Ƙarshen Ƙarshen Sama suke da Mahimmanci
Dukiya
Tasirin Ingantaccen Magani
Sakamakon Talauci/Babu Magani
Ƙarfin kwasfa
4-8+ N/cm
<2 N/cm → delamination, kumfa
Juriya mai zafi
Barga zuwa 260 ° C +
Wuraren fuska, rawaya, spalling sama da 200 ° C
Dielectric aiki
Ci gaba da rufewa, ƙarancin ramuka
Babban hasara na dielectric, haɗarin rushewa
Juriya na sinadaran
Yana toshe danshi/sinadari wicking capillary
Gilashin fiber harin, gazawar da bai kai ba
sassauci
Yana riƙe da ƙarfi lokacin da aka inganta shi
Tushen masana'anta, da wuya a nannade
Maɓalli mai ɗaukar nauyi: Wakilin ƙarewar saman shine ainihin fasaha don samar da zane mai zafin jiki na PTFE. Mallaka da jami'an haɗin gwiwa na organosilane, waɗannan sinadarai suna gina haɗin gwiwar kwayoyin halitta a mahaɗin inorganic-organic don warware ƙarancin mannewa na PTFE zuwa fiberglass. Suna ƙayyade ƙarfin kwasfa, tsawon rayuwa mai sassauƙa, juriya na zafi, rufin lantarki, da rashin kuzarin sinadarai.
A takaice , da surface karewa wakili shafi fiberglass masana'anta kafin PTFE shafi ba karamin daki-daki - shi ne kafuwar PTFE high-zazzabi zane quality. Ma'aikatan haɗin gwiwar Organosilane (amino, epoxy, fluorinated) suna ƙirƙirar gadoji masu mahimmanci na kwayoyin halitta tsakanin fiber gilashi da PTFE, ƙarfafa ƙarfin kwasfa daga <2 N / cm zuwa 4-8+ N / cm. Hakanan magani mai kyau yana haɓaka juriya na zafi (260 ° C+), ƙarancin shafi, aikin dielectric, da juriya na sinadarai.
Lokacin zabar zane na PTFE don aikace-aikacen da ake buƙata, tambayi game da sinadarai gama-gari - yana shafar rayuwar sabis da amincin kai tsaye. Guji abubuwan da ba a kula da su ba ko rashin kulawa da su, waɗanda za su lalata ƙarƙashin zafin zafi da damuwa na inji.
Bukatar high quality-PTFE high-zazzabi zane tare da gyara saman karewa? Aokai PTFE yana amfani da na'urori masu haɓaka haɗin kai na haɓaka don maɗaukaki da dorewa. Tuntube mu tare da buƙatun ku.
Don cikakkun bayanai dalla-dalla, jagorar aikace-aikacen, da mafita na musamman na cikakken fayil ɗin samfurin: PTFE babban zane na ɗan lokaci, PTFE m tef, PTFE raga bel, bel ɗin fuser maras kyau, masana'anta mai gefe guda PTFE mai rufi, bel mai ɗaukar zafi mai ƙarfi & zane mai zafin jiki mai zafi , da fatan za a tuntuɓe mu:
