PTFE emulsion impregnation shine ainihin tsari don samarwa PTFE masana'anta mai zafin jiki . Tushen PTFE watsawa kadai ba koyaushe yake jika ba, shiga, ko haɗin kai daidai ga masana'anta na fiberglass. Don cimma sutura iri ɗaya, mannewa mai ƙarfi, da filaye marasa lahani, masana'antun suna ƙara kewayon mataimakan aiki.
Aokai PTFE ya inganta haɓakar ƙirar ƙira a cikin samfuran da yawa. Wannan jagorar ya bayyana mataimaka takwas da aka fi sani da su - abin da suke yi, yadda suke aiki, da lokacin amfani da su.
Ma'aikatan Jika da Masu Kutsawa - The Core Additives
Raw PTFE emulsion yana da in mun gwada da high surface tashin hankali, wanda take kaiwa zuwa matalauta infiltration cikin zaruruwa da kuma yadudduka. Magungunan wetting suna rage tashin hankali na sama, suna barin emulsion ya yada kuma ya shiga cikin tasiri.
Matsanancin-ƙananan tashin hankali na saman, kyakkyawan shigar azzakari cikin abubuwan da ke da wuya-zuwa rigar. Dole ne a sarrafa sashi mai ƙarfi don guje wa ƙasƙantar aikin saman bayan sintiri.
Mabuɗin bayanin kula: Fluorocarbon surfactants suna da tasiri sosai amma suna buƙatar a hankali allurai. Yawan wuce gona da iri na iya ƙaura zuwa saman rufi yayin sintering kuma yana rage ayyukan da ba na sanda ba.
Masu kauri da Rheology Modifiers - Sarrafa ɗaukar hoto
Thickeners daidaita emulsion danko don hana dripping da daidai tsara shafi kauri.
Babban inganci, thixotropy mai daidaitacce (wanda aka keɓe tare da ruwan ammonia)
Polyurethane associative thickeners (HEUR)
nau'ikan HEUR
Kyakkyawan matakin daidaitawa, anti-splash
Inorganic thickeners
Tushen silica, bentonite
Inganta thixotropy da juriya mai zafi; na iya rage bayanin tsabta
Nasiha mai fa'ida: Don sirara, riguna iri ɗaya akan masana'anta masu tsauri, yi amfani da ƙirar ɗanɗano kaɗan tare da ƙaramin kauri. Don sutura masu nauyi ko buɗaɗɗen yadudduka, ƙara mai kauri don sarrafa zurfin shiga.
PH Regulators da Emulsion Stabilizers
PTFE emulsions gabaɗaya ana daidaita su ta anionic surfactants kuma ana kiyaye su a pH 9-10 don hana coagulation.
Ruwan Ammoniya (28 wt%): Mafi yawan amfani da mai sarrafa. Yana jujjuyawa gaba ɗaya yayin bushewa/sintering, ba tare da barin sauran abubuwan da ke lalata aikin ba.
Matakan ƙarfafawa: Anionic surfactants irin su sodium dodecyl sulfate (SDS) da kuma secondary alkyl sulfonate (SAS) suna inganta juriyar juriya na emulsion yayin yin famfo da tashin hankali.
Masu haɓaka Adhesion - Resins ɗin haɗin gwiwa da Wakilan Haɗawa
PTFE mai tsafta yana da ƙarfin haɗin gwiwa mai rauni sosai tare da kayan aiki. Masu haɓaka adhesion suna da mahimmanci.
1. Silane coupling agents
Misalai: Aminosilane (KH-550), epoxy silane.
Mechanism: Bayan hydrolysis, suna samar da haɗin sinadarai tare da fiberglass - Si-O-Si bond tsakanin silane da gilashi, da ƙungiyoyi masu aiki na kwayoyin da ke hulɗa da PTFE ko wasu polymers.
Tsanaki: Dole ne a ƙara a hankali don guje wa karyewar emulsion. Pre-hydrolysis ko bayan jiyya (amfani da masana'anta kafin impregnation) ana bada shawarar.
Aikace-aikacen: Kayan mahimmanci don suturar da ba ta da sanda da masu ɗaure na gama gari don kafofin watsa labarai na fiberglass mai ciki da kayan membrane. Suna inganta mannewa da haɗin kai a cikin haɗuwa na ƙarshe.
Kayayyakin Ƙirƙirar Fina-Finai - Rage Zazzabi
PTFE yana da matuƙar high narke danko. Kayan aikin samar da fina-finai suna sauƙaƙa haɗuwa da ɓangarorin a lokacin sintiri.
PFA (perfluoroalkoxy resin) - ƙananan narkewa fiye da PTFE
Wadannan narke-aiki fluoropolymers samar da narkakkar bonding bulan tsakanin PTFE barbashi a lokacin sintering, boosting shafi compactness da interfacial mannewa. Suna da amfani musamman don kauri mai kauri ko lokacin da ake son ƙananan yanayin zafi.
Filler masu aiki - Abubuwan Kaya na Musamman akan Buƙata
Fillers ana tarwatsa kai tsaye cikin emulsion don ba da takamaiman kaddarorin.
Nau'in Filla
Misalai
Manufar
Filaye masu jurewa sawa
Nano/micron alumina, silicon carbide, silica
Inganta juriyar abrasion
Conductive / antistatic fillers
Carbon baki, graphite, carbon nanotubes (tare da dispersants)
Rarraba cajin tsaye
Alamun launi
Iron oxide baki, titanium dioxide
Lambar launi, juriya UV
Mahimmanci: Fillers suna buƙatar masu rarraba jika masu dacewa (misali, polycarboxylates) don hana haɓakawa da tabbatar da rarraba iri ɗaya.
Defoamers - Hana Pinholes
Kumfa mai tsanani yana faruwa a lokacin da ake ciki, yana haifar da lahani na pinhole akan sutura.
Nau'in
Siffofin
Defoamers marasa siliki (wanda aka fi so)
Polyether na tushen, tushen mai ma'adinai. Yana kawar da haɗarin ragowar silicone masu shiga tsakani tare da mannewa na biyu ko jiyya na saman.
Silicone defoamers
Ƙarfin lalata kumfa, amma amfani yana iyakance ga aikace-aikacen da aka yarda da ragowar silicone.
Shawarwari: Don kaset na PTFE waɗanda za a yi amfani da su a cikin babban aiki bonding ko shafi aikace-aikace, silicone-free defoamers an fi son karfi.
Bincika abubuwan da za su iya tafasawa ko polyols (propylene glycol, ethylene glycol) lokaci-lokaci ana ƙara su don jinkirin ƙafewar ruwa da hana fashewa daga bushewa da sauri.
Mahimmanci: Waɗannan ba safai ake amfani da su a cikin tafiyar matakai ba, kamar yadda duk abubuwan da ke tattare da kwayoyin halitta dole ne su ruɓe gabaɗaya a lokacin rarrabuwa. Yin amfani da yawa zai iya barin ragowar carbon.
Takaitawa - Zaɓin Kunshin Taimako Na Dama
Manufar
Nasihar Mataimakin
Inganta jika da shiga
Nonionic ko fluorocarbon wetting wakili
Sarrafa nauyin sutura
Thickerer (cellulose ko HEUR)
Tabbatar da emulsion, hana coagulation
Mai sarrafa pH (ruwa ammonia) + mai daidaitawa anionic
Ƙarfafa haɗin PTFE-substrate
Wakilin haɗin gwiwar Silane ko tarwatsawar guduro PAI/PPS
Haɓaka samuwar fim, ƙananan zafin jiki
PFA ko FEP watsawa
Ƙara juriya na lalacewa
Alumina ko silicon carbide filler
Ƙara haɓaka aiki
Carbon baki, graphite, ko CNT
Hana ramuka daga kumfa
Defoamer mara amfani
Sannu a hankali bushewa don rufi mai kauri
Humectant (propylene glycol) - yi amfani da dan kadan
Aokai PTFE na iya ƙirƙira gaurayawan haɗaɗɗun impregnation don takamaiman aikace-aikace. Tuntube mu tare da kayan aikin ku, buƙatun kauri, da makasudin aiki.
Idan kuna son ƙarin koyo game da cikakkun bayanai dalla-dalla, yanayin aikace-aikacen da keɓaɓɓen mafita don kewayon samfuranmu, gami da masana'anta masu zafin jiki na PTFE, kaset ɗin zafin jiki na PTFE, bel ɗin raga na PTFE, bel ɗin na'ura mai haɗawa, zane mai gefe guda PTFE, high-zazzabi mai jurewa isar da bel ɗin mu da bel ɗin fiberglas mai ƙarfi, ƙwararrun masana'anta mai ƙarfi.
