Jiangsu Aokai New Materials, muendli wa xiphurofexinali wa lapi ra PTFE ra mahiselo ya le henhla, u nyika xingheniso lexi heleleke. Endlelo ro cheleta lapi ra fiberglass hi PTFE dispersion i thekinoloji ya nkoka kuva yi peta hiku ringana naku sinter polytetrafluoroethylene eka fiberglass substrate, ku endla switirhisiwa leswi hlanganisiweke leswi kombisaka ku tiya ka mahiselo yale henhla, ku pfaleriwa ka gezi xikan’we na matirhelo yo ka yanga namarheli. Switirhisiwa swotani switirhisiwa ngopfu eka ti laminates ta high-frequency copper-clad, ti non-stick conveyor belts ta mahiselo yale henhla, switirhisiwa swa membrane ya architectural na tinsimu tin’wana.
Endlelo ra masungulo leri heleleke ri na magoza ya nkoka ya nkombo hi ndlela leyi landzelaka:
1. Ku Endliwa Ka Lapi Ra Fiberglass (Ku Susa Wax / Ku Susa Sayizi) .
Leri i goza ra nkoka swinene ra le mahlweni ka vutshunguri. Xitirhisiwa xo pima vukulu bya swiambalo (ngopfu ngopfu paraffin wax, starch derivatives) xi cheriwa eka ti fiberglass filaments hinkarhi wa ku luka; ku susiwa loku nga helelangiki swi ta onha swinene ku hlangana ka interfacial exikarhi ka PTFE na tifibre ta nghilazi.
· Ndlela leyikulu yo tshungula: Lapi ri ya emahlweni ri hundza eka furnace ya mahiselo yale henhla ya thermal dewaxing eka 350~400°C, yi oxidizing hiku hetiseka naku bola switirhisiwa hinkwaswo swa organic sizing agents.
· Ku khomiwa hi ku landzelerisa: Lapi leri nga riki na wax ra titimela, minkarhi yin’wana ri hlantswiwa hi mati yo tenga kumbe ti solvents ta tikhemikhali ku herisa nkuma lowu saleke, kutani ri omisiwa ku kuma lapi ro basa leri tengeke leri nga riki na nchumu leri lulameleke ku cheriwa.
2. Ku Endliwa ka Emulsion ya PTFE
· Raw material: Concentrated PTFE dispersion leyingana nhlayo ya standard solid ya kwalomu ka 60%.
· Endlelo ro hlanganisa: Hlanganisa ku hangalasiwa ka xitoko hi mati lawa yanga deionized kuya eka nhlayo leyi kongomisiweke (40%–55%) kuya hi ku layicha ka resin loku lavekaka xikan’we na viscosity ya impregnation. Surfactant leyi faneleke yi cheriwa ku tlakusa matirhelo ya ku tsakamisa eka fiberglass; thickener yinga nghenisiwa kuva yi lulamisa viscosity loko swilaveka.
3. Ku nghenisiwa ka khwiri
Xikongomelo xa nkoka i ku nghenelela loku heleleke ka PTFE emulsion eka ti fibre bundles na ti interstices ta lapi leri lukiweke.
1. Ndlela ya Dip-Squeeze (Yi amukeriwa ngopfu): Lapi ri kongomisiwa hi ti immersion rollers leswaku rita tsakama hiku hetiseka eka thangi ra emulsion, kutani ri hundza eka ti squeeze rollers. Ndzilo wa coating wu lawuriwa hiku lulamisa ntshikelelo wa roller nip kuva yi humesa emulsion leyi tlulaka mpimo naku hangalasa resin hindlela yin’we.
2. Doctor Blade Coating: Emulsion yi hangalasiwa ehenhla ka lapi hiku tirhisa ti blade ta nsimbi, leti lulameleke eka ti high-viscosity dispersions.
4. Ku omisa
Lapi leri cheriweke ri nghena eka oven yo omisa ya mahiselo yale hansi leyi tirhaka eka 100~150°C.
· Xikongomelo: Pfuxeta mati hi vukheta na swiphemu swa surfactants, ku endla hambi kuri non-tacky dry film ya PTFE particles eka fibre surfaces.
· Xitsundzuxo xa vulawuri bya mahiselo: Mahiselo yale henhla swinene yata hatlisa ya endla film yo enta yale henhla, ku khoma ndzhongho wale ndzeni lowu vaporizes kuva wu endla ti pinholes na swirhumbana.
5. Ku sintering (Ku horisa hi ku hisa) .
Lapi leri omisiweke ri hatlisa ri phameriwa eka furnace ya sintering ya mahiselo yale henhla kuva yi basisiwa hi kuhisa eka 360~390°C (kufika eka 400°C eka ti grade tin’wana).
· Endlelo: PTFE i polymer ya thermoplastic. Eka mahiselo yale henhla swinene ka ndzhawu ya yona yo n’oka (327°C), swiphemuphemu swa PTFE swa n’oka, swi khuluka naku levela ehandle kuva swi endla filimi leyi yaka emahlweni, leswi fikelelaka ku hlanganisiwa ka michini xikan’we naku namarhela eka swiphemu swa fiberglass.
· Ku avanyisa ka xiteji: Ndzhawu ya sintering yi avanyisiwile hi heating ramp, constant-temperature sintering na swiphemu swo kufumela ku tiyisisa ku hlanganisiwa loku heleleke ka ti particle handle ka ku onhaka ka mahiselo.
6. Ku cheriwa ka swirhendzevutani swo tala & Sintering
Xirhendzevutani xin’we xa impregnation-sintering xi humesa ntsena xifunengeto xa ultra-thin lexi talaka ku va na swihoxo swa pinhole. Ku fikelela ku enta ka coating leyi kongomisiweke xikan’we na nhlayo ya resin (xikombiso, 45%–65% resin loading eka high-frequency copper-clad laminate substrates), ntlhandlamano lowu heleleke wa impregnation → drying → sintering wu phindha-phindhiwa 2 kuya eka 4 wa minkarhi kumbe kutlula. Xirhendzevutani xin’wana na xin’wana xi ya emahlweni xi tata swivandla swa fibre naswona xi engetela ku enta ka coating, eku heteleleni xi endla pinhole-free dense composite sheet.
7. Endzhaku ka Vutshunguri & Ku rhendzeleka
1. Ku cinciwa ka vuandlalo: Endzhaku ka ku hundza ko hetelela ka sintering, vutshunguri bya corona kumbe ti khemikhali ta sodium-naphthalene etching swinga tirhisiwa ku antswisa ku namarhela ka le henhla handle ko onha substrate, leswi olovisaka copper cladding leyi landzelaka kumbe secondary coating.
2. Edge trimming & winding: Makumu ya malapi ya tsemiwa hiku kongoma, kutani lapi leri hetiweke ri rhendzeleka kahle hi muchini wo teka.
3. Ku kamberiwa ka khwalithi: Ku kamberiwa loku heleleke ka switirhisiwa leswi hetiweke ku katsa na ntiko wa xisekelo, ku enta, matimba ya tensile, matimba ya peel, dielectric constant na swihoxo swa vuandlalo bya mahlo.
Tinhla ta Vulawuri bya Maendlelo ya Nkoka
Ti parameters ta nkoka leti lawulaka khwalithi ya swihumelerisiwa leswi hetiweke i: desizing/dewaxing hiku hetiseka, full emulsion wetting, ku omisiwa ka mahiselo yale hansi hakatsongotsongo, ku vekiwa ka mahiselo ya sintering hiku kongoma, na consistent coating density endzhaku ka swirhendzevutani swotala swa impregnation.
Loko u lava ku kuma swihlawulekisi leswi nga na vuxokoxoko, swiyimo swa xikombelo na swintshuxo leswi endleriweke photifoliyo ya hina leyi heleleke ya swikumiwa ku katsa na lapi ra mahiselo ya le henhla ya PTFE, thepi yo namarhela ya mahiselo ya le henhla ya PTFE, bandi ra mesh ra mahiselo ya le henhla ya PTFE, bandi ro kandziyisa ku hisa leri nga riki na swirhabyani, lapi ra PTFE ra tlhelo rin’we, bandi ro fambisa leri nga riki na mahiselo ya le henhla na lapi ra fiberglass leri tiyiselaka ku hisa, hi kombela u hi tihlanganisa hi ku tirhisa vuxokoxoko lebyi nga laha hansi:
Minkarhi hinkwayo hi namarhela filosofi ya vukorhokeri bya xiphurofexinali na vutshembeki, hi mbilu hinkwayo hi nyika swintshuxo swa tiindasitiri swa xiyimo xin’we na vukorhokeri bya vaxavi lebyi anakanyisisiweke eka vatirhisani hinkwavo!
