Isiokwu a na-ewebata zuru ezu bụ isi usoro maka impregnating fiberglass ákwà na PTFE emulsion. Nzọụkwụ asaa dị mkpa: ① Pretreatment (dewaxing / dewaxing) na 350-400 ° C iji wepụ ihe ndị na-emepụta akwa ákwà; ② Emulsion usoro na 40-55% siri ike ọdịnaya na surfactants maka mma wetting; ③ Impregnation site n'usoro ntinye-pịa ma ọ bụ mkpuchi agụba dọkịta; ④ Drying na 100-150 ° C iji jiri nwayọọ wepụ mmiri na-emepụta ihe nkiri PTFE akọrọ; ⑤ Sintering na 360-390 ° C (ruo 400 ° C) iji gbazee ihe ndị PTFE n'ime ihe nkiri na-aga n'ihu; ⑥ Multi-cycle impregnation- ihicha-sintering ugboro 2-4 iru ebumnuche ọkpụrụkpụ na resin ọdịnaya (45-65%); ⑦ Ọgwụgwọ mgbe emechara gụnyere ọgwụgwọ corona, mbelata ọnụ, ikuku na nyocha ịdị mma. Isi ihe na-achịkwa isi: nchacha zuru oke, wetting emulsion zuru oke, ihicha nke nta nke nta, okpomoku siri ike nke ọma, yana njupụta mkpuchi na-agbanwe agbanwe. Ngwaahịa na-enye laminates ọla kọpa na-adị elu ugboro ugboro, eriri na-ebuga okpomọkụ na ihe eji arụ ụlọ.

Isiokwu a na-ewebata ihe mgbaze organic nke PTFE akwa okpomọkụ nwere ike idi. PTFE mkpuchi fiberglass ákwà na-egosiputa kemịkalụ inertness pụrụ iche, na-eguzogide ihe fọrọ nke nta ka ọ bụrụ ihe mgbaze organic niile n'okpuru ọnọdụ ọrụ nkịtị na-enweghị mgbasa, ọzịza ma ọ bụ mmeghachi omume kemịkalụ. Ụdị ndị a na-anagide gụnyere: alcohols (methanol, ethanol, isopropanol), ketones (acetone, MEK, cyclohexanone), esters (ethyl acetate, butyl acetate), hydrocarbons (peturuolu, toluene, xylene, hexane), halogenated hydrocarbons (dichloromethane, chloroform), organic acid ethers tetras (dichloromethane). (glacial acetic acid, formic acid), amines na amides (triethylamine, DMF), phenols, na ndị ọzọ dị ka carbon disulfide, pyridine, silicone mmanụ na breeki mmiri.

Isiokwu a na-ekpuchi ihe ndị chọrọ nju oyi n'oge akwa akwa okpomọkụ dị elu nke PTFE. Mgbe emechara ya na 380-400 Celsius, akwa ahụ ga-agafe ngwa ngwa site na mpaghara 310-315 Celsius C na-enwe mmetụta nke kristal. Ọnụego jụrụ oyi na-atụ aro ka ọ dịkarịa ala 30-50C / min (akwa akwa nwere ike nweta 100-200 Celsius C / min site na ikuku jụrụ oyi). Ngwa ngwa jụrụ oyi (quenching) na-emepụta kristal dị ala (45-50%), na-enye nro dị nro, mkpuchi siri ike nke nwere ebe dị mma, nkwekọ siri ike, arụmọrụ na-adịghị mma nke ọma, na iguzogide delamination na cracking. Igwe oyi na-adị nwayọọ (ịjụ ọkụ ọkụ) na-ebute kristal dị elu (60-70%), na-eme ka mkpuchi siri ike, na-agbaji agbaji na-adaba n'ike, peeling na microcracks.

A na-eme akwa akwa akwa PTFE dị elu site na mkpuchi PTFE n'elu akwa fiberglass dị elu, na-enye ike ike, nkwụsị ọkụ, ihe ndị na-adịghị mma, nguzogide kemịkalụ, na obere esemokwu. Ngwa ndị dị mkpa gụnyere: mbufe ụlọ ọrụ (nkwakọ ngwaahịa na-ekpo ọkụ ọkụ, ịsa nri nri, draịva textile, ihicha akwụkwọ / ihe nkiri); akwa ntọhapụ nke ihe mejupụtara na akwa akwa akwa akwa na-ekpo ọkụ; ákwà mgbochi mgbochi ịgbado ọkụ na mkpuchi mkpuchi okpomọkụ; moto eletriki na mkpuchi mkpuchi; ụlọ na-agbagharị agbagharị na nkwado pipeline; kemịkalụ filtration na valvụ akara na gburugburu ndị na-emebi emebi. Ike tensile dị elu na-eme ka ịdịte aka n'okpuru mgbakasị ahụ, ndọkasị, mgbanwe ugboro ugboro, yana nrụgide igwe dị elu n'ofe ngwa ndị a dị arọ dị iche iche.

N'oge sintering, PTFE ahụ na fiberglass ákwà agbaze n'elu 327°C, na-ebibi mbụ apịaji-chain lamellae na urughuru ókè-etolite amorphous gbazee. Mgbe jụrụ oyi, PTFE recrystallizes n'ime spherulites nke nwere radially gbakwasara lamellae, na crystallinity sitere na 50-70%. Ọnụego jụrụ oyi na-ekpebi izu oke kristal: ngwa ngwa jụrụ oyi na-eme ka kristal dị elu, spherulites buru ibu, ike siri ike; Nkwụsị ngwa ngwa na-enye spherulites dị mma yana ime mgbanwe dị mma.

Nke a teknuzu nkenke si Jiangsu Aokai na-enyocha otú oke oke ala ma ọ bụ elu sintering okpomọkụ na-emebi akwa okpomọkụ PTFE. Ọkpụkpụ dị ala na-ahapụ ahụ adịghị agbaze, na-eme ka micro-pores, mkpuchi mkpuchi na-adịghị ike, ihe na-esighị ike, ike arụ ọrụ adịghị mma, na ọdịdị mmiri ara ehi na-adịghị mma. ekpo oke ọkụ na-ebute mmebi okpomọkụ nke PTFE, na-emepụta pinholes, afụ, nhịkọ, ngbanwe agba odo na-oji, na ịhapụ uzuoku na-egbu egbu. Oke ihe abụọ a na-emebi kọmpat, ịrụ ọrụ anaghị arụ ọrụ, mgbanwe, mkpuchi, na nkwụsi ike akụkụ.

PTFE elu-okpomọkụ ákwà mkpuchi gaskets ikpokọta elu dielectric ike (kwụsi ike n'okpuru iru mmiri), -70 ° C ka 260 ° C okpomọkụ nso, eluigwe na ala chemical eguzogide (ma e wezụga wụrụ awụ alkali ọla), na-abụghị osisi n'elu (na-egbochi creepage), mgbochi creep (fiberglass mkwado vs. dị ọcha PTFE), elu tensile ike = 0-1 flaction (flag.0). ogo. Tụnyere mica, roba, na dị ọcha PTFE gaskets, PTFE ákwà na-enye elu mgbanwe, processability, na ogologo oge akụkụ kwụsie ike. Kwesịrị ekwesị maka ihe ngbanwe, mkpuchi moto, mkpuchi flange kemịkalụ, na akụrụngwa semiconductor.

PTFE ewepụghị akwa ákwà n'oge sintering na-achọ kpọmkwem esemokwu, okpomọkụ, na njide njide. Ụzọ isi: igwe stenter (efere pin na-edobe obosara, gbochie weft shrinkage), profaịlụ okpomọkụ gradient (na-ekpo ọkụ ngwa ngwa → 380-400 ° C jide → nwayọọ nwayọọ dị n'okpuru 310 Celsius C tupu ịhapụ esemokwu), mkpụrụ osisi nke mbụ (na-ewepụ nrụgide ịkwa ákwà tupu mkpuchi), na mkpuchi mkpuchi (na-egbochi agbaze dị iche iche). A ga-edobe ihe mgbochi senter ruo mgbe ọ dị jụụ n'okpuru ebe kristal PTFE (ihe dị ka 310 Celsius) iji gbochie iwe iwe.

Mkpuchi uniformity n'oge PTFE emulsion impregnation nke fiberglass ákwà bụ lifeline nke ngwaahịa àgwà. Ihe mkpuchi na-enweghị isi na-akpata: ọdịda na-adịghị mma (ịrapagidesi ike na ntụpọ ndị dị mkpa), adịghị ike n'ibu (mmetụta nchekasị, nhụsianya), enweghị ike eletrik (voltaji na-adaba na 1/10), ntinye kemịkalụ (pinhole corrosion), akụkụ akụkụ (warpage), na nhazi nhazi (belt wandering, ọkpụrụkpụ ọdịiche). Ihe mkpuchi uwe na-achọ njikwa ziri ezi nke emulsion viscosity, ọdịnaya siri ike, esemokwu akwa, oghere oghere, na profaịlụ ihicha/sintering ọtụtụ mpaghara.

PTFE akwa okpomọkụ dị elu na-enweta usoro anọ nke mgbanwe nhazi ka okpomọkụ na-ebili: n'okpuru 260 ° C - ngwa ngwa micro-cracking na residual additive volatilization; na 327 Celsius C (ebe na-agbaze) - kristal-na-amorphous mgbanwe, mkpuchi na-eme ka ọ dị nro, delaminates si fiberglass; 400-500 ° C - PTFE depolymerizes (na-ahapụ gas na-egbu egbu), mkpuchi na-apụ n'anya; n'elu 500 ° C - fiberglass na-eme ka ọ dị nro (840 ° C ebe nro dị nro) ma tụfuo iguzosi ike n'ezi ihe. Nọrọ n'okpuru 260°C na-aga n'ihu, zere> 300°C maka ịrụ ọrụ nchekwa.