PTFE emulsion impregnation ndiye njira yaikulu yopangira PTFE nsalu yotentha kwambiri
Aokai PTFE yakonza mapangidwe a impregnation pazinthu zambiri. Bukhuli likufotokoza zothandizira zisanu ndi zitatu zomwe zimakonda kwambiri - zomwe amachita, momwe zimagwirira ntchito, komanso nthawi yozigwiritsa ntchito.
Zonyowetsa ndi Zolowera - Chowonjezera Chowonjezera
Emulsion yaiwisi ya PTFE imakhala ndi zovuta kwambiri, zomwe zimapangitsa kuti musalowe mu ulusi ndi nsalu. Othandizira kunyowa amachepetsa kupsinjika kwapamwamba, kulola emulsion kufalikira ndikulowa bwino.
Mtundu
Zitsanzo
Mawonekedwe
Nonionic surfactants (zambiri)
Mafuta a mowa polyoxyethylene ethers (AEO series), alkyl polyglycosides (APG)
Chokhazikika, chogwirizana kwambiri
Fluorocarbon surfactants
Chemours Capstone mndandanda (waufupi, PFOS/PFOA-free)
Kutsika kwambiri kwapamtunda, kulowa kwabwino kwambiri m'magawo ovuta kunyowa. Mlingo uyenera kuwongoleredwa mosamalitsa kuti upewe kuwononga magwiridwe antchito pambuyo pa sintering.
Chidziwitso chofunikira: Ma surfactants a fluorocarbon ndi othandiza kwambiri koma amafunikira kuwunika mosamala. Kuchulukira kumatha kusamukira kumalo okutira panthawi ya sintering ndikuchepetsa magwiridwe antchito osagwiritsa ntchito ndodo.
Thickeners ndi Rheology Modifiers - Kuwongolera Coating Pick-Up
Thickeners kusintha emulsion mamasukidwe akayendedwe kuteteza kudontha ndi kuwongolera ndendende ❖ kuyanika makulidwe.
Mtundu
Zitsanzo
Mawonekedwe
Ma cellulose ethers
Hydroxyethyl cellulose (HEC), methyl cellulose (MC)
Kusungunuka m'madzi, kupsereza kwathunthu pa sintering
Alkali-swellable acrylic thickeners (ASE)
Mndandanda wa ASE
Kuchita bwino kwambiri, thixotropy wosinthika (wosalowerera ndi madzi ammonia)
Polyurethane associative thickeners (HEUR)
Mitundu ya HOUR
Kuwongolera bwino, anti-splash
Inorganic thickeners
Silika yotentha, bentonite
Limbikitsani thixotropy ndi kukana kutentha; akhoza kuchepetsa ❖ kuyanika kumveka bwino
Mfundo yothandiza: Pansalu zopyapyala, zowomba, gwiritsani ntchito mawonekedwe owoneka bwino komanso okhuthala pang'ono. Kwa zokutira zolemera kapena nsalu zoluka, onjezani zokhuthala kuti muzitha kulowa mkati.
pH Regulators ndi Emulsion Stabilizers
Ma emulsions a PTFE nthawi zambiri amakhazikika ndi anionic surfactants ndipo amasungidwa pa pH 9-10 kuti apewe kukomoka.
Madzi a ammonia (28 wt%): Wowongolera omwe amagwiritsidwa ntchito kwambiri. Imasungunuka kwathunthu pakuwumitsa / kuyanika, osasiya zotsalira zomwe zimasokoneza magwiridwe antchito.
Othandizira okhazikika: Ma anionic surfactants monga sodium dodecyl sulfate (SDS) ndi alkyl sulfonate yachiwiri (SAS) amathandizira kukana kukameta ubweya wa emulsion panthawi yopopera ndi kukwiya.
PTFE yoyera ili ndi mphamvu yomangirira yofooka kwambiri yokhala ndi magawo. Zolimbikitsa zomatira ndizofunikira.
1. Silane coupling agents
Zitsanzo: Aminosilane (KH-550), epoxy silane.
Mechanism: Pambuyo pa hydrolysis, amapanga zomangira za mankhwala ndi fiberglass - Si-O-Si zomangira pakati pa silane ndi galasi, ndi magulu ogwira ntchito omwe amalumikizana ndi PTFE kapena ma polima ena.
Chenjezo: Ayenera kuwonjezeredwa mosamala kuti apewe kusweka kwa emulsion. Pre-hydrolysis kapena post-treatment (kugwiritsa ntchito nsalu musanalowetsedwe) ndikulimbikitsidwa.
2. High-kutentha kugonjetsedwa kugwirizana utomoni dispersions
Zitsanzo: Kumwazika madzi kwa polyamide-imide (PAI), polyphenylene sulfide (PPS), polyethersulfone (PES).
Ntchito: Zida zapakati pa zokutira zopanda ndodo ndi zomangira wamba za media zosefera za fiberglass ndi nembanemba. Amathandizira kumamatira ndi kulumikizana mu kompositi yomaliza.
PTFE ili ndi kukhuthala kwakukulu kwambiri. Zothandizira kupanga mafilimu zimathandizira kuphatikizika kwa tinthu panthawi ya sintering.
Ma fluoropolymers osungunuka awa amapanga magawo osungunuka osungunuka pakati pa tinthu tating'onoting'ono ta PTFE panthawi ya sintering, kukulitsa kukhazikika kwa zokutira komanso kumamatira kwapakati. Ndiwothandiza makamaka pakupaka zokhuthala kapena pamene kutentha kwa sintering kumafunika.
Functional Fillers - Katundu Wamakonda Pakufunidwa
Odzaza amamwazikana mwachindunji mu emulsion kuti apereke zinthu zenizeni.
Mtundu wa Filler
Zitsanzo
Cholinga
Ma fillers osamva kuvala
Nano/micron alumina, silicon carbide, silika
Limbikitsani kukana abrasion
Ma conductive / antistatic fillers
Mpweya wakuda, graphite, carbon nanotubes (ndi dispersants)
Chotsani static charge
Mitundu ya inki
Iron oxide wakuda, titaniyamu woipa
Coding mitundu, UV kukana
Zofunika: Zodzaza zimafunikira zophatikizira zonyowa zoyenera (mwachitsanzo, ma polycarboxylates) kuti ateteze kusakanikirana ndikuwonetsetsa kugawa kofanana.
Defoamers - Kupewa Pinholes
Kutulutsa thovu kwambiri kumachitika panthawi ya mimba, zomwe zimapangitsa kuti pakhale zolakwika pazitsulo.
Mtundu
Mawonekedwe
Ma defoam opanda silicone (okondedwa)
Opangidwa ndi polyether, mafuta amchere. Imathetsa chiwopsezo cha zotsalira za silikoni zomwe zimasokoneza kumatira kwachiwiri kapena chithandizo chapamwamba.
Zojambula za silicone
Mphamvu yofooketsa mphamvu, koma kugwiritsidwa ntchito kumangogwiritsidwa ntchito pomwe zotsalira za silikoni ndizovomerezeka.
Malangizo: Kwa matepi a PTFE omwe azigwiritsidwa ntchito kwambiri polumikizira kapena zokutira, ma defoam opanda silikoni amakondedwa kwambiri.
Tsatirani zosungunulira zotentha kwambiri kapena ma polyols (propylene glycol, ethylene glycol) nthawi zina amawonjezedwa kuti madzi asamasefuke pang'onopang'ono ndikuletsa kusweka kuti zisawume mwachangu.
Zofunika: Izi sizimagwiritsidwa ntchito kawirikawiri pakupanga sintering, chifukwa zigawo zonse za organic ziyenera kuwola panthawi ya sintering. Kugwiritsa ntchito mopitirira muyeso kumatha kusiya zotsalira za kaboni.
Chidule - Kusankha Phukusi Loyenera Lothandizira
Cholinga
Analimbikitsa Wothandizira
Konzani kunyowetsa ndi kulowa
Nonionic kapena fluorocarbon wetting wothandizira
Control ❖ kuyanika kulemera
Thickener (ma cellulose kapena HEUR)
Kukhazikika emulsion, kupewa coagulation
pH regulator (madzi ammonia) + anionic stabilizer
Limbitsani mgwirizano wa PTFE-gawo lapansi
Silane coupling wothandizira kapena PAI/PPS utomoni kubalalitsidwa
Sinthani mawonekedwe a filimu, kuchepetsa kutentha kwa sintering
PFA kapena FEP kubalalitsidwa
Onjezani kukana kuvala
Alumina kapena silicon carbide filler
Onjezerani conductivity
Mpweya wakuda, graphite, kapena CNT
Pewani zibowo za thovu
Defoamer wopanda silicone
Kuyanika kwapang'onopang'ono kwa zokutira zokhuthala
Humectant (propylene glycol) - gwiritsani ntchito mochepa
Aokai PTFE imatha kupanga zophatikizira zamtundu wazinthu zinazake. Lumikizanani nafe ndi gawo lanu, kufunikira kwa makulidwe a zokutira, ndi zomwe mukufuna kuchita.
Zomwe zili pamwambazi zimaperekedwa ndi Malingaliro a kampani Jiangsu Aokai New Materials Technology Co., Ltd.
Ngati mukufuna kudziwa zambiri zatsatanetsatane, zochitika zamagwiritsidwe ntchito ndi mayankho makonda pazogulitsa zathu zonse, kuphatikiza nsalu zotentha kwambiri za PTFE, matepi apamwamba a PTFE, malamba a mauna a PTFE, malamba omangira makina opanda msoko, nsalu imodzi ya PTFE, nsalu zotchinga kutentha kwambiri, ndi malamba osagwira magalasi apamwamba, chonde malamba osamva kutentha kwambiri
Nthawi zonse timatsatira malingaliro a ukatswiri ndi kukhulupirika, ndipo tadzipereka kukupatsirani mayankho amodzi ndi ntchito zolingalira.
