Ku langutiwa: 0 Mutsari: Muhleri wa Sayiti Nkarhi wo kandziyisa: 2026-06-25 Masungulo: Ndhawu
Eka vuhumelerisi bya PTFE high-temperature fabric , goza ra impregnation ri tirhisa PTFE emulsion (ku hangalasiwa ka mati). Kambe raw PTFE emulsion ntsena swa tika ku yi lulamisa hi ndlela leyinene. Ti thickeners ti cheriwa ku cinca mahanyelo ya yona ya rheological xikan’we naku tiya.
Hikokwalaho ka yini? PTFE resin yina density yale henhla naswona yitala ku tshamiseka. Handle ka swilo swo titimela, emulsion a yi ta hambana, yi nghena swinene eka lapi kutani yi humesa swifunengeto leswi nga ringaniki.
Aokai PTFE yi antswisile ku hlawuriwa ka thickener eka ti formulations totala ta impregnation. Xihloko lexi xi hlamusela mintirho ya mune ya nkoka ya ti thickeners eka PTFE emulsion.
PTFE resin yina density yale henhla (kwalomu ka 2.2 g/cm³) naswona yitala ku tshamiseka naku nonoka swinene ematini. Handle ka ku tiyisisiwa, emulsion yi hambana kuva yiva na sediment-rich layer xikan’we na clear liquid layer – leswi endlaka leswaku yinga tirhisiwi eka ku peta loku nga cincekiki.
Ndlela leyi ti thickeners ti tirhaka ha yona: Ti thickeners ti tlakusa swinene viscosity ya aqueous phase, leswi endlaka xivumbeko xa network lexi seketelaka ti resin particles. Lexi:
Yi engetela vutomi bya shelf ya emulsion – yitshama yirikarhi yitirhisiwa kuringana tinhweti kutlula masiku
Swi sivela ku hambanisiwa ka swiphemu hi nkarhi wa ku fambisiwa na ku hlayisiwa
Yi herisa ku caking – sediment leyi nonokeke ehansi ka swibye
Aokai PTFE note: Eka ti emulsions leti hlayisiweke eka masiku ya 30, hi ringanyeta ku tlhela ku endliwa homogenization loko kungase tirhisiwa, hambi kuri na ti thickeners, tani hileswi vuhlayiselo bya nkarhi woleha bya static byi nga ha vangaka ku tshamiseka hiku nonoka.
Ti thickeners ti nyika emulsion mahanyelo ya shear-thinning (pseudoplastic): viscosity yale henhla loko yi wisa, viscosity yale hansi ehansi ka ku pfilunganyeka.
Xiyimo |
Ku tsindziyela |
Mbuyelo |
|---|---|---|
Loko a wisa (a yime ethangini) . |
Henhla |
Swi sivela ku tshamiseka ka swiphemuphemu swa PTFE |
Hi nkarhi wa ku pfilunganyeka/ku hlanganisiwa |
Hansi |
Ku pompa ko olova, ku hlanganisiwa ka homogeneous |
Hi nkarhi wa ku peta/ku cheriwa |
Ehansi (ehansi ka shear) . |
Ku levela loku rhetaka, ku nghena swinene eka fiberglass |
Endzhaku ko peta (static) . |
Ku hola hi ku hatlisa |
Yi herisa ku rhetela eka swilo leswi yimisiweke, yi sivela swirhendzevutani |
Vuyelo lebyi tirhaka: Hi nkarhi wa dip coating, emulsion yi khuluka hiku ntshunxeka eka lapi ra fiberglass ehansi ka shear, kutani yi tiya hiku hatlisa endzhaku ka coating kuva yi hlayisa uniform wet film thickness handle ka drips.
Loko ku cheriwa ti porous substrates tofana na fiberglass cloth, ku lulamisa muxaka na mpimo wa ti thickeners swipfumelela vulawuri lebyi kongomeke eka vuenti bya ku nghena ka emulsion.
Vuenti bya ku Nghena |
Tshikelela |
|---|---|
Swi dzikile ngopfu |
Resin leyi tlulaka mpimo yi nghena hi lapi – high resin pick-up, stiff hand feel, ku tlanga hi swilo |
Swi nga enta ngopfu |
Resin leyinga enelangiki eka vuandlalo bya lapi – swivumbeko swoka swinga namarheli, fiberglass leyi nga erivaleni |
Swi kahle ngopfu |
Ku ringanisela – PTFE yi pfalela ti fibre, vuandlalo byo olova, ku olova lokunene |
Ndlela leyi ti thickeners ti lawulaka leswi ha yona: Viscosity yale henhla yi hunguta ku nghena, leswi siyaka resin yotala ehenhla. Viscosity yale hansi yipfumelela ku nghena swinene eka fiberglass bundle. Leswi swi boha ku layicha ko hetelela ka resin xikan’we na ku titwa ka mavoko ka switirhisiwa leswi hetiweke.
Viscosity leyi ringaneleke kusuka eka ti thickeners:
Yi tshikelela ku pandzeka loku vangiwaka hi ku rhurha ka ndzhongho hiku hatlisa loko ku omisiwa
Swi sivela ku enta ka ku peta loku nga ringaniki (makumu yo tiya, xikarhi xo olova) .
Ku olovisa ku vumbiwa ka tifilimi ta masungulo ta xiphepherhele, leti yaka emahlweni
Ku hunguta 'coffee ring effect' laha emulsion yi rhurhelaka emakumu
PTFE emulsion yilava ku sintering eka kwalomu ka 380°C kuva yi hlanganisa ti particles ta PTFE eka film leyi yaka emahlweni. Leswi swi tisa xilaveko xo hlawuleka xa swilo swo titimela:
Ti thickeners leti hlawuriweke tifanele ku hisa hiku hetiseka handle ka nkuma lowu saleke eka mahiselo lawa.
Khwalithi ya Xigwitsirisi |
Vuyelo Endzhaku ka Sintering |
|---|---|
Ku basa ka le henhla, ku pfurha hi ku helela |
Clean PTFE coating, pure white muvala, ku pfaleriwa ka gezi loku heleleke |
Hi masalela ya inorganic |
Swivati swa nkuma, ku cinca ka muhlovo wotshuka, kuhunguteka ka matimba ya dielectric, swihoxo swa coating |
Aokai PTFE yitirhisa ti cellulose-based thickeners (xikombiso, methyl cellulose) leti hisaka hiku hetiseka eka 380°C, laha kunga siyiwiki nkuma. Hi ringanyeta ku papalata ti thickeners letingana ti inorganic salts kumbe ti metal oxides leti siyaka masalela.
Ntirho |
Xilaveko |
|---|---|
Ku tiyisisiwa ka ku yimisiwa |
Ku vumba xivumbeko xa netiweke ku seketela swiphemuphemu swa PTFE swa density ya le henhla |
Ku tsemeta hi ku tsemeta |
Swi endla leswaku swi olova ku pompa, ku peta, na ku nghena |
Ku lawula ku nghena ka swilo |
Ku lulamisa resin pick-up na fabric hand feel |
Ku fana ka filimi |
Swi sivela ku pandzeka na ku oma loku nga ringaniki |
Ku sintering loku nga riki na masalela (ka nkoka) . |
Swifanele ku hisa hiku hetiseka eka ~380°C – zero ash, zero color change |
Aokai PTFE yi hlawula ti thickeners leti ringaniselaka mintirho hinkwayo ya mune loko yirikarhi yi tiyisisa ku hisiwa loku heleleke hinkarhi wa sintering. Eka swivumbeko swa custom impregnation, hi nga lulamisa muxaka wa thickener na mpimo ku fambisana na ntiko wa wena wo karhi wa coating na swilaveko swa ku nghena ka lapi.
Xitlhokovetselo lexi xa xithekiniki xi nyikiwa hi Jiangsu Aokai Thekinoloji ya Switirhisiwa Leswintshwa Co., Ltd.
Loko u lava swihlawulekisi swa vuxokoxoko, timhaka ta xikombelo na swintshuxo leswi endleriweke ku tirhisiwa ka swilo swa hina hinkwaswo ku katsa na malapi ya mahiselo ya le henhla ya PTFE, tithepi to namarhela ta PTFE, mabandhi ya mesh ya PTFE, mabandhi ya muchini wo fusa lama nga riki na swirhabyani, lapi leri funengetiweke hi PTFE leri nga na tlhelo rin’we, mabandhi yo fambisa lama nga hisiki na malapi ya fiberglass ya mahiselo ya le henhla, hi kombela u hi tihlanganisa hi ku tirhisa tichannel leti nga laha hansi:
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Nkulukumba Liu: +86 13705266308
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