Lapi ra matimba yale henhla ra PTFE ra mahiselo yale henhla i xivumbeko xa fiberglass ya high-tenacity na PTFE coating. Switirhisiwa swa nkoka swi katsa ku hundzisela ka ti indasitiri (ku baka swakudya, ku omisiwa ka swiambalo, ku fambisiwa ka PCB), nsirhelelo wa ku welda (swifunengeto swa heat-sealer, swisirhelelo swa spatter), demolding na ku vumba ka press yo hisa (ku vumba ka rhaba, PV lamination), ku pfaleriwa ka gezi (motor slot liners, cable wraps), ti membranes ta vumaki (mafulelo ya xitediyamu, vutomi bya malembe ya 30+), tikhemikhali ta anti-corrosion (ku andlala swihlanganisi, swifunengeto swa mathangi), swihaha-mpfhuka (swiambalo swo hisa), ni switirhisiwa swo hlawuleka (ku tsema hi laser, ku kandziyisa hi 3D).

Ku omisiwa i goza ra nkoka eka vuhumelerisi bya malapi ya mahiselo yale henhla ya PTFE. Swihoxo leswi tolovelekeke swikatsa: ku pandzeka (ku hatlisa swinene ku oma, ku tshoveka ka nhlonge yale henhla), ku rhurhela ka coating (ti particles ti famba kuya e henhla, ku tsana ka bond yale ndzeni), pinholes/blisters (trapped air kumbe steam), swivati swo basa na chalking (ku rhurha ka surfactant kumbe incomplete fusion), yellowing/coking (ku hisa ngopfu ka swiengeteri), delamination (shrinkage stress exceeds adhesion), orange peel (ku nga ringani kahle), warpage (ku hunguteka loku nga ringaniki), ku oma ehenhla kambe endzeni ku tsakama (ku khuluka ka nhlonge swi khoma ndzhongho), na matlhelo yo tiya (coffee-ring effect). Switshuxo swikatsa ti drying profiles leti lawuriwaka, ku nghenisiwa ka moya kahle, na substrate pretreatment.

PTFE emulsion impregnation ya fiberglass fabric yilava swipfuneti swohambana hambana kuva ku fikeleriwa ku peta loku fanaka, ku namarhela loku tiyeke, na swiphemu leswinga riki na swihoxo. Swiengeteri swa nkoka swikatsa: switirhisiwa swo tsakamisa (ku hunguta ku tsana ka le henhla, ku antswisa ku nghena), swithickeners (ku lawula viscosity na ntiko wa coating), swilawuri swa pH (ku tiyisisa emulsion eka pH 9-10), switirhisiwa swo hlanganisa swa silane (ku ndlandlamuxa ku namarhela eka nghilazi), swipfuneti swo endla filimi (PFA/FEP ku sintering), ti fillers leti tirhaka (ku lwisana na ku ambala, ku fambisa), ti defoamers (ku sivela ti pinholes), na ti humectants (ku oma hiku nonoka). Ku hlawuriwa swiya hi swilaveko swa substrate na matirhelo.

Lapi ra fiberglass leri andlariweke (bulked yarn fabric) rihambana swinene na lapi ra ntolovelo ra fiberglass eka xivumbeko xa yarn. Hiku tirhisa vutshunguri bya high-pressure air jet, ti filaments ta nghilazi leti yaka emahlweni ta hambanisiwa, ti crimped, naswona ti fluffed kuva voluminous, cotton-like yarn. Leswi swiendla leswaku kuva na lapi ro tiya, ro olova leringana thermal insulation yale henhla (trapped air layers), conformability yo antswa, higher filtration efficiency, xikan’we naku antswisiwa ka tear/flex resistance – hiku durha ka matimba yale hansi nyana ya tensile. Yi tirhisiwa eka ti gasket ta mahiselo yale henhla, swifunengeto swa tiphayiphi, swikhwama swo sefa na swipfalo swa oven.

Ku basa ka switirhisiwa swoka swinga lulamisiwanga i masungulo ya matirhelo ya lapi ra mahiselo yale henhla ya PTFE. High-purity PTFE emulsion (ku hava ti ions ta nsimbi, kungari na masalela ya low-molecular-weight) yitiyisisa ku tiya ka kuhisa (ku hava ku tshwuka kuya fika eka 260°C), non-stick leyi tiyeke, na matimba yale henhla ya dielectric. Eka fiberglass, alkali-free E-glass (Na2O <0.8%) yi hlayisa matimba xikan’we naku pfaleriwa eka mahiselo yale henhla; nghilazi ya le xikarhi/ya le henhla ya alkali yi vanga ku onhaka. Ku susiwa hiku hetiseka ka weaving sizing agents swisivela carbonization na delamination. Ku basa ku khumba hi ku kongoma vutomi bya vutirheli, ku landzelerisa ka giredi ya swakudya, na ku tshembheka ka gezi.

Ku omisiwa kahle ka lapi ra fiberglass swina nkoka swinene eka PTFE coating leyi landzelaka, resin impregnation, kumbe lamination. Vutshunguri byinharhu lebyikulu: ku susiwa ka ndzhongho eka 105-120°C (10-30 min kuya hi ntiko), dewaxing/thermal cleaning eka 300-450°C (LOI <0.1%, papalata>500°C), naku hisa ka ha ri emahlweni eka 60-100°C loko kungase peta. Lawula kufana ka mahiselo ya oven (±5°C), ku sindzisiwa ku susa ndzhongho, naswona sirhelela malapi lawa ya tshunguriweke hi silane ehansi ka 110°C. Hlayisa lapi leri omisiweke eka minkwama leyi pfaleriweke kumbe makamara yo oma (<30°C, <40% RH).

PTFE high-temperature fabric (PTFE-coated fiberglass) yile kusuhi naku pfumala ti khemikhali, kambe swilo swokarhi swivanga ku bola ehansi ka swiyimo swokarhi. Nhlaselo wo kongoma wa PTFE wuhumelela hi tinsimbi ta alkali leti n’okiweke (sodium, potassium), switirhisiwa swo tiya swa fluorinating (F2, ClF3) eka mahiselo yale henhla, na ti alkali to tiya leti n’okiweke ehenhla ka 300°C. Ku bola lokunga kongomangiki ku humelela loko hydrofluoric acid (HF), hot concentrated alkalis, kumbe phosphoric acid yo hisa yi nghena eka swihoxo swa coating naswona yi hlasela substrate ya fiberglass. Eka vukorhokeri bya tikhemikhali byo tlula mpimo, tirhisa filimi ya PTFE yo basa leyi nga riki na fiberglass.

Lapi ra mahiselo yale henhla ya PTFE (PTFE-coated fiberglass) rina ku tiya ka kahle swinene ka thermal shock endzeni ka ndzhawu ya rona ya ntolovelo yo tirha ya -70°C kuya eka 260°C. Yikota ku tiyisela ku rhendzeleka ka mahiselo hiku hatlisa, xikombiso, ku suka eka -50°C freezer kuya eka 260°C hot press. Ti grade ta premium ti pona hambi kuri ku kufumela ka xitshuketa kusuka eka 260°C kuya eka mati ya 10°C. Hambiswiritano, ku chavisa swilo leswi kusuka eka mahiselo yale henhla ka 300°C (ekusuhi na PTFE’s 327°C melting point) swita endla leswaku kuva na ku pandzeka ka xihatla xikan’we na delamination. Substrate ya fiberglass yinyika ku tiya ka dimensional; xifunengeto xa PTFE hi xona xi sivelaka.

Lapi ra mahiselo yale henhla ra PTFE ritirhisiwa ngopfu eka indasitiri ya tikhemikhali eka switirhisiwa swa nkoka swa nkombo: ti flange gaskets nati pipe linings (yi lwisana na ti acids/alkalis to tiya), ti reactor na ti tank linings (yi sivela ku bola ka nsimbi, ku basisiwa hiku olova), ti filter bags ta corrosive flue gas (kufika eka 260°C), ti anti-corrosion expansion joints ta ti ducts, anti-adhesion ti pads to welda, lapi ro humesa ra composite molding, na swifunengeto swo pfalela gezi/ku hisa. Tigredi ta FDA na UL ta kumeka.

PTFE lapi ra mahiselo yale henhla (PTFE-coated fiberglass) rinyika swipfuno swa mune swa nkoka tani hi anti-corrosion lining: ku nga tirhi ka tikhemikhali (ku lwisana na aqua regia, ti alkalis to tiya, swintshuxekisi), mahiselo yo anama (-70°C kuya eka 260°C kuya emahlweni, 350°C peak), kutshamiseka ka dimensional (<0.5% elongation), na vuandlalo lebyi nga namarheliki (ku olova ku basisa, swi sivela ku hlengeletana). Yi tirhisiwa eka tiphayiphi ta tikhemikhali, swihondzo swo susa sulphur, mathangi yo pickling, na switirhisiwa swa swakudya/pharma. Tigredi ta FDA ta kumeka.