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-ekpuchi isi arụmọrụ egosi maka PTFE elu-okpomọkụ teepu eji na agụụ mkpuchi, agụụ okpomọkụ ọgwụgwọ na yiri gburugburu. Isi ihe achọrọ dị iche na iji ikuku eme ihe: mwepu ikuku dị oke egwu (TML≤1%, CVCM≤0.1%; akara elu ikuku/ọcha anya chọrọ TML≤0.5%, CVCM≤0.01%); A ghaghị ịnwapụta nguzogide okpomọkụ maka ma PTFE substrate (260 ° C) na nrapado oyi akwa; A na-achọ PSA silicone dị ala nke dị ọcha nke ọma iji gbochie mmetọ siloxane; oke okpomọkụ na-ejide ike na-egbochi mkpụgharị na ntu ọnụ; ịdị ọcha achọghị ịwụfu eriri na ọdịnaya ionic dị ala; teepu mgbochi static (nguzogide elu 10⁶-10⁹ Ω/sq) na-egbochi mmebi ESD; Ekwesịrị ịtụle nguzogide plasma maka usoro sputtering / PECVD; Thermal shrinkage n'okpuru 2% na-ahụ na masking nkenke.

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.

Isiokwu a na-atụnyere ọnụ ụlọ-okpomọkụ na elu-okpomọkụ maturation nke silicone mgbali-sensive nrapado maka PTFE teepu. Okpomọkụ dị elu (120-180ºC) na-emepụta netwọk nwere njikọ chiri anya nwere ike ịdị n'otu siri ike, na-egbochi ihe fọdụrụ na nrapado mgbe ọ gachara. Ọ na-etolite agbụ kemịkalụ na PTFE substrates site na ijikọ primer, na-ewepụ ihe egwu delamination. Okpomọkụ dị elu na-ewepụkwa ihe na-adịghị ala ala tupu nnyefe, na-egbochi mmetọ mmanụ na silicone n'oge okpomọkụ mbụ.

Ntuziaka a na-ekpuchi nhọrọ teepu okpomọkụ dị elu nke PTFE maka ịkpụzi injection na ngwa mgbochi osisi. Nhọrọ dabere na ọnọdụ okpomọkụ: ≤260 ° C maka plastik izugbe (ọkọlọtọ silicone PSA teepu, 0.13-0.18mm); 260-300 ° C maka plastik injinia dị elu dị ka PC, PA66, POM (ihe mkpuchi silicone dị elu, 0.18-0.25mm); 300-400°C maka PEEK, LCP, PPS nso ndị na-agba ọsọ na-ekpo ọkụ (teepu nrapado ada ada; jiri akwa PTFE na-enweghị nrapado ma ọ bụ ihe nkiri PFA). Nhọrọ dabere na ihe onwunwe: ihe ndị na-adịghị mma chọrọ ntọhapụ elu PTFE dị ọcha; Ihe mejupụtara iko / mineral chọrọ nnukwu ọrụ 0.25mm + teepu na-eguzogide iyi; ihe mgbakwunye na-emebi emebi na-achọ nrapado na nnukwu mkpụrụ na-eguzogide ọgwụ; Ngwa static-sensitive chọrọ teepu PTFE ojii mgbochi static.

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.

A na-eji akwa fiberglass kpuchie PTFE n'ọtụtụ ebe na nhazi rọba maka nguzogide okpomọkụ ya, ihe na-adịghị mma, na obere esemokwu. Ngwa ndị dị mkpa gụnyere: ihe ntọhapụ maka efere efere/vacuum vulcanization na ịkpụzi taya; eriri ebufe na-abụghị osisi maka igwe igwe mepere emepe, kalenda, na ahịrị jụrụ oyi; akwa interleave maka nchekwa rọba nke emechara ọkara; njikwa pụrụ iche nke silicone na fluororubber; na oven trays maka post-agwọ. Uru na-agụnye iwepụ nrapanye ebu, ibelata ojiji ihe ntọhapụ, igbochi mkpuchi rola, na ịgba mbọ hụ na ọ na-agbawa nke ọma.

Obere sintering na-ahapụ PTFE adịghị agbaze, na-eme ka micro-pores, adhesion na-adịghị mma, ebe siri ike, ike ọrụ dị ala, na ọdịdị milky. Ikpo oke ọkụ na-eweda PTFE, na-emepụta pinholes, afụ, nhịkọ, agba odo na-acha oji, na uzuoku na-egbu egbu. Ha abụọ na-emebi kọmpat, ịrụ ọrụ anaghị arụ ọrụ, mgbanwe, mkpuchi, na nkwụsi ike akụkụ. Oke kacha mma 370-400C na-amịpụta ọkara transperent, dị nro, mkpuchi tan. Nlele anya: matte ọcha = under-sintered; odo/nkụri akụ = over-sintered. (296 nkeji)