PTFE emulsion impregnation ke ts'ebetso ea mantlha ea ho hlahisa PTFE lesela la mocheso o phahameng oa mocheso . The base PTFE dispersion mong hase kamehla metsi, phunyeletse, kapa tlamahaneng ka ho phethahetseng lesela la fiberglass. Ho finyella ho roala ka mokhoa o ts'oanang, ho khomarela ka matla, le libaka tse se nang sekoli, bahlahisi ba eketsa lisebelisoa tse ngata tse sebetsang.
Aokai PTFE e ntlafalitse mekhoa ea ho kenya lihlahisoa ho lihlahisoa tse ngata. Tataiso ena e hlalosa lithuso tse robeli tse atileng haholo - seo li se etsang, hore na li sebetsa joang, le nako ea ho li sebelisa.
Liemeli tsa ho kolobisa le ho kenella - The Core Additive
Emulsion e tala ea PTFE e na le tsitsipano e batlang e phahame holimo, e lebisang ho keneng ho fokolang ka har'a likhoele le masela. Li-wetting agents li fokotsa tsitsipano ea holim'a metsi, e lumellang emulsion ho ata le ho kenella ka katleho.
Mofuta
Mehlala
Likaroloana
Li-nonionic surfactants (tse tloaelehileng)
Mafura a joala a polyoxyethylene ethers (AEO series), alkyl polyglycosides (APG)
E tsitsitseng, e lumellana ka bophara
Li-surfactants tsa fluorocarbon
Letoto la Chemours Capstone (ketane e khuts'oane, PFOS/PFOA-mahala)
Tension e tlase haholo, e kenella ka har'a li-substrates tse thata ho isa ho tse metsi. Tekanyetso e tlameha ho laoloa ka thata ho qoba ts'ebetso e nyenyefatsang ka mor'a ho sintering.
Ntlha ea bohlokoa: Li-surfactants tsa Fluorocarbon li sebetsa haholo empa li hloka ho nooa ka hloko. Ho feteletseng ho ka fallela sebakeng sa ho roala nakong ea sintering le ho fokotsa ts'ebetso e sa tsitsang.
Thickeners le Rheology Modifiers - Laola Coating Pick-Up
Li-thickeners li fetola emulsion viscosity ho thibela ho rotha le ho laola ka nepo botenya ba ho roala.
E qhibiliha ka metsing, e chese ka ho feletseng nakong ea sintering
Alkali-swellable acrylic thickeners (ASE)
Letoto la ASE
Ho sebetsa hantle haholo, thixotropy e feto-fetohang (e sa nke lehlakore ka metsi a ammonia)
Polyurethane associative thickeners (HEUR)
Mefuta ea HOUR
Boemo bo botle, anti-splash
Li-thickeners tsa tlhaho
Silika e chesang, bentonite
Ntlafatsa thixotropy le ho hanyetsa mocheso; e ka fokotsa ho hlaka ha koae
Keletso e sebetsang: Bakeng sa liphahlo tse tšesaane, tse ts'oanang le leselang le lohiloeng ka thata, sebelisa li-viscosity tse tlase tse nang le motenya o fokolang. Bakeng sa masela a boima kapa masela a bulehileng, eketsa botenya ho laola botebo ba ho kenella.
Balaoli ba pH le Emulsion Stabilizers
Li-emulsion tsa PTFE hangata li tsitsisoa ke li-anionic surfactants 'me li bolokiloe pH 9-10 ho thibela ho kopana.
Metsi a ammonia (28 wt%): Taolo e sebelisoang haholo. E fetoha ka ho feletseng nakong ea ho omisa / sintering, e siea ho se na mesaletsa e senyang tshebetso.
Li-stabilizers tse thusang: Li-anionic surfactants tse kang sodium dodecyl sulfate (SDS) le alkyl sulfonate ea bobeli (SAS) li ntlafatsa ho hanyetsa ha shear ea emulsion nakong ea ho pompa le ho ferekana.
Bahlahisi ba Adhesion - Li-resin tsa Bonding le li-Coupling Agents
PTFE e hloekileng e na le matla a ho kopanya a fokolang haholo le li-substrates. Lisebelisoa tsa ho khomarela li bohlokoa.
1. Silane coupling agents
Mehlala: Aminosilane (KH-550), epoxy silane.
Mokhoa: Ka mor'a hydrolysis, ba etsa lik'hemik'hale tsa lik'hemik'hale tse nang le fiberglass - Si-O-Si li-bonds pakeng tsa silane le khalase, le lihlopha tse sebetsang tse sebetsang tse sebelisanang le PTFE kapa li-polymers tse ling.
Tlhokomeliso: E tlameha ho kenngoa ka hloko ho qoba ho robeha ha emulsion. Pele ho hydrolysis kapa ka mor'a phekolo (ho sebelisa lesela pele ho emola) ho khothaletsoa.
2. Mocheso o phahameng manganga bonding dispersions
Mehlala: Mehlala ea metsi ea polyamide-imide (PAI), polyphenylene sulfide (PPS), polyethersulfone (PES).
Kopo: Lisebelisoa tsa mantlha tsa liphahlo tse sa thunngoeng le li-binders tse tloaelehileng bakeng sa mecha ea litaba ea filthara ea fiberglass e kentsoeng le lisebelisoa tsa membrane. Ba ntlafatsa momahano le momahano motsoakong oa ho qetela.
Lithuso tsa ho etsa lifilimi - ho theola mocheso oa Sintering
PTFE e na le viscosity e phahameng haholo ea ho qhibiliha. Lisebelisoa tsa ho etsa lifilimi li thusa ho kopanya likaroloana nakong ea sintering.
PFA (perfluoroalkoxy resin) - sebaka se tlase se qhibilihang ho feta PTFE
FEP (fluorinated ethylene propylene copolymer) - ntlha e tlase ea ho qhibiliha ho feta PTFE
Li-fluoropolymers tsena tse ka qhibilihang li theha mekhahlelo e tlamahano e qhibilihisitsoeng lipakeng tsa likaroloana tsa PTFE nakong ea sintering, e matlafatsang khoaso ea ho kopanya le ho khomarela sefahleho. Li bohlokoa ka ho khetheha bakeng sa liphahlo tse teteaneng kapa ha mocheso o tlase oa sintering o lakatseha.
Li-Fillers tse sebetsang - Thepa e Tloaelehileng e batloang
Li-fillers li hasanngoa ka ho toba ho emulsion ho fana ka thepa e khethehileng.
Mofuta oa Filler
Mehlala
Morero
Li-filler tse thibelang ho roala
Nano/micron alumina, silicon carbide, silika
Ntlafatsa khanyetso ea abrasion
Li-filler tsa conductive / antistatic
Carbon black, graphite, carbon nanotubes (e nang le li-disperants)
Tlosa tefiso e tsitsitseng
Mebala ea mebala
Iron oxide e ntšo, titanium dioxide
Khoutu ea mebala, khanyetso ea UV
Bohlokoa: Li-filler li hloka li-dispersants tse nepahetseng tsa metsi (mohlala, polycarboxylates) ho thibela ho kopana le ho netefatsa hore ho ajoa ka mokhoa o ts'oanang.
Li-Defoamers - Ho Thibela li-Pinholes
Ho phatloha ho matla ho etsahala nakong ea ho emola, ho baka mefokolo ea likoti holim'a liphahlo.
Mofuta
Likaroloana
Li-defoam tse se nang silicone (tse khethiloeng)
Polyether-based, oli ea diminerale e thehiloeng. E felisa kotsi ea masala a silicone a sitisang ho khomarela ha bobeli kapa ho phekola holim'a metsi.
Li-silicone defoamers
Bokhoni bo matla ba ho tlosa mabuu, empa ts'ebeliso e lekanyelitsoe lits'ebetsong moo masala a silicone a amohelehang.
Keletso: Bakeng sa litheipi tsa PTFE tse tla sebelisoa ts'ebetsong e phahameng ea ho kopanya kapa ho roala, li-defoam tse se nang silicone li ratoa haholo.
Li-Humectants tse Etsang Lifilimi - Tšebeliso ea Nako le Nako
Latela li-solvents tse nang le lintlha tse phahameng tse belang kapa polyols (propylene glycol, ethylene glycol) ka linako tse ling li eketsoa ho lieha ho fetoha mouoane oa metsi le ho thibela ho phunyeha ho tloha ho omisa ka potlako.
Bohlokoa: Tsena ha li sebelisoe hangata lits'ebetsong tsa sintering, kaha likarolo tsohle tsa organic li tlameha ho bola ka botlalo nakong ea ho sintering. Tšebeliso e feteletseng e ka siea mesaletsa ea carbon.
Kakaretso - Ho Khetha Sephutheloana sa Thuso se Nepahetseng
Sepheo
E khothalelitsoe Thuso
Ntlafatsa ho kolobisa le ho kenella
Nonionic kapa fluorocarbon wetting agent
Laola ho roala boima
Thickener (selulose kapa HEUR)
Tsitsisa emulsion, thibela coagulation
pH regulator (metsi a ammonia) + anionic stabilizer
Ntlafatsa sebopeho sa filimi, mocheso o tlase oa sintering
Phatlalatso ea PFA kapa FEP
Eketsa khanyetso ea ho apara
Alumina kapa silicon carbide filler
Eketsa conductivity
Carbon black, graphite, kapa CNT
Thibela likoti tse tsoang ho foam
Defoamer e se nang silicone
Ho omisa butle bakeng sa litlolo tse teteaneng
Humectant (propylene glycol) - sebelisa ka mokhoa o fokolang
Aokai PTFE e ka etsa motsoako oa tloaelo oa ho inregnation bakeng sa lits'ebetso tse ikhethileng. Ikopanye le rona ka substrate ea hau, tlhoko ea botenya ba ho koahela, le lipehelo tsa ts'ebetso.
Haeba u lakatsa ho ithuta haholoanyane ka litlhaloso tse qaqileng, maemo a kopo le tharollo e ikhethileng bakeng sa lihlahisoa tsa rona tse felletseng, ho kenyeletsoa masela a mocheso o phahameng oa PTFE, litheipi tsa mocheso o phahameng oa PTFE, mabanta a marang-rang a PTFE, mabanta a seamless a tlamang mochini, lesela le nang le lehlakore le le leng la PTFE, masela a sa keneleng mocheso o phahameng ka kopo:
AoKai PTFE ke setsebi
PTFE Coated Fiberglass Fabric Manufacturers le barekisi ba Chaena, ba khethehileng ka ho fana ka
PTFE Adhesive Tape,
PTFE Lebanta la Conveyor,
PTFE Mesh Belt Ho reka kapa ho rekisa lihlahisoa tsa
lesela la fiberglass tse koahetsoeng ka PTFE . Bophara bo bongata, botenya, mebala e fumaneha ka mokhoa o ikhethileng.
