Iyi ngingo ikubiyemo itandukaniro riri hagati ya emulisiyo ya PTFE ikorwa no guhagarikwa polymerisation vs dispersion polymerisation. Ibisobanuro: guhagarika polymerisation ntibishobora kubyara PTFE; emulioni ya PTFE nyayo ituruka gusa kuri polymerisation. 'Guhagarika-uburyo bwa emulsion ' mubyukuri ni ihagarikwa ryamazi yo guhagarika ubutaka-polymerized resin micropowders. Dispersion polymerisation (emulsion primaire): ibice bya serefegitura (0.1-0.3μm, gukwirakwiza kwagutse), bigahagarikwa na surfactants ya perfluorine, uburemere buke cyane (> 94% kristalline), fibrillation ikomeye, bisaba gucumura 380 ° C kugirango ikore firime ikomeza.

Iyi ngingo irasuzuma ingaruka za catalizike ya platine hamwe no kwibanda kuri kinetics yo guhuza-gukiza silicone rubber. Ubwoko bwa catalizike: Cataliste (Acide chloroplatinic, Pt⁴⁺) isaba kugabanuka kubinyabuzima bikora bike-bifite agaciro, bikora nkibisanzwe; Cataliste ya Karstedt (Pt⁰ hamwe na divinyltetramethyldisiloxane) yinjira muburyo bwa catalitiki. Ubwoko bwingaruka: Umuvugizi yerekana igihe cyo kwinjiza hamwe na S-yo gukiza umurongo (gahoro kare, byihuta nyuma) nimbaraga zo kugaragara cyane; Karstedt yerekana nta induction, igipimo cyambere cyambere hamwe na exotherm ikarishye, imbaraga zo gukora hasi.

Iyi ngingo ikubiyemo amahirwe yo gukoreshwa kuri Teflon yubushyuhe bwo hejuru murwego rwo hejuru rukora amashanyarazi. Ibice bine: Kuma electrode yumye / electrolyte membrane ikora - ubukonje bwo hejuru bwo kurwanya imikandara ya anti-inkoni yo gukanda (150-250 ° C) ituma ibishishwa bya firime byishyigikira; uruziga rushyushye rutwikiriye igice kimwe cya kabiri gihoraho kirwanya inkoni; ituma firime igaragara neza, igabanya inenge, izamura umusaruro. Kurekura imirongo hamwe nudupapuro two kwisiga kugirango densifike ishyushye - bateri ya sulfide / polymer ikenera isostatike ishyushye / gukanda (100-300 ° C, MPa mirongo); Imyenda ya PTFE ishyizwe hagati yububiko bwa bateri nububiko irinda gufatana, ituma igabanywa ryumuvuduko umwe ukoresheje micro-elastique, irinda amasahani yo gushyushya.

Iyi ngingo ikubiyemo kwandikirana kwinshi hagati yagace ka gel nimbaraga zifatika mumashanyarazi ya silicone yunvikana kuri kaseti ya Teflon. Igice cya Gel = ijanisha ryinshi ryurusobekerane rwumuyoboro udashobora gukemuka muri toluene (Gukuramo Soxhlet, 24hr). Imbaraga zifatika zirangwa nubushyuhe bwo hejuru bwo gufata (180 ° C, 1kg). Imirongo itatu: munsi yingingo zikomeye (<60%) - nta rezo ya percolating, ifata imbaraga hafi ya zeru; urwego rufatika (60-85%) - imbaraga zifatika zikura cyane hamwe nigice cya gel, 60% → 70% izamura ifata umwanya kuva muminota kugeza kumasaha, 70% → 80% itanga 3-10x kwiyongera; guhuza cyane (> 85%) - yunguka gahoro (85% → 95% kwiyongera 20-50% gusa), tack yagabanutse cyane,> 95% itakaza imitungo ya PSA.

Iyi ngingo irasuzuma impinduka zumunyururu wa PTFE munsi ya ultraviolet irradiation. Umuyoboro wingenzi hamwe no kugabanya ibiro bya molekuline: UV (254nm, 471 kJ / mol) isenya imigozi ya CC (347 kJ / mol), itera homolysis, ikabyara CF₂ yarangiye radicals yubusa, kugabanuka gukabije kwa molekile, gutakaza ubukana no kuramba. Inzira yubusa ya radical reaction: muburyo bwa ogisijeni, radicals ya peroxy, ihinduranya na fluoride ya acili (—COF) na aside ya karubonike (—COOH), irekura COF₂ na CO₂ (hydrolyzes ya COF₂ kuri HF); mu kirere cya inert, kutagereranya / kwiyubaka byiganje, ariko gusohora urunigi bikomeza kuba byinshi.

Iyi ngingo ikubiyemo ikoreshwa rya Teflon yubushyuhe bwo hejuru murwego rwo hejuru rwumuriro. Ibikoresho bifatika: PTFE isize fiberglass umwenda, uzwi mu kirere nk'umwenda wa Beta, uhuza imyenda ihindagurika hamwe na PTFE idafite ibidukikije bikabije. Uruhare: igice kinini cyimyambaro ya Thermal Micrometeoroid (TMG) mubice byimikorere idasanzwe, ihura na vacuum, itandukaniro ryubushyuhe bukabije, hamwe na micrometeoroide nkinzitizi yambere yumubiri / ubushyuhe bwa firime imbere. Kurengera ibidukikije bikabije: bihanganira -200 ° C kugeza kuri + 260 ° C (bireba izuba> 120 ° C kugeza igicucu -160 ° C); ubuso bwera bugaragaza imirasire y'izuba; irinda firime ya aluminiyumu yoroheje ya polyimide kuva kurira. Ubufasha bwimuka: ubuso buke PTFE irinda ibice gutitira mugihe cyo kugunira hamwe, byemeza ko EVA ihinduka.

Iyi ngingo ikubiyemo ibyiza byo gukoresha imyenda ya Teflon yubushyuhe bwo hejuru muri batiri ya lithium yumye. Ikoreshwa nkimikandara ya convoyeur cyangwa ifuru, gukemura ibibazo bitatu byingenzi: gufatira hamwe, kwangirika, no gushushanya electrode. Ibice bine byibyiza: Ubwiza bwa electrode numusaruro - imitungo irwanya inkoni irinda PVDF guhuza bifasha gukuramo byoroshye; imiyoboro imwe yubushyuhe kuri 100-140 ° C irinda gucika / gutwika; ubuso bunoze bukuraho ibishushanyo no kumena ifu; Kuramba no gukora neza - kurwanya imiti irwanya NMP hamwe na myuka ya electrolyte idafite kubyimba / gusaza; imbaraga zingana kandi zihamye ziva muri fiberglass substrate kugirango ihagarare neza; gusukura byoroshye hamwe nibisigara bike ugereranije nimikandara ya mesh.

Iyi ngingo ikubiyemo uburyo bwo guhuza ubushyuhe bwangirika hamwe nubuzima bwa kimwe cya kabiri cya peroxide ihuza ibintu (BPO na DCP) hamwe nidirishya ryo gukiza kaseti ya Teflon. Amakuru yibanze: BPO - 1-min igice cyubuzima kuri ~ 131 ° C, 1-isaha kuri ~ 92 ° C, 10-isaha kuri ~ 72 ° C; DCP - 1-min kuri ~ 171 ° C, 1-isaha kuri ~ 135 ° C, 10-isaha kuri ~ 115 ° C. Guhuza logique: gufatira gukenera 97-99% guhuza = 5-7 igice cyubuzima; gukiza igihe = 5-7 × igice cyubuzima ku bushyuhe bwintego. Inyuma-kubara ubushyuhe uhereye kumurongo wo guturamo igihe cyangwa kugaruka-kubara igihe uhereye kubushyuhe bwemewe.

Iyi ngingo ikubiyemo umurongo wihuta wumurongo wa PTFE yubushyuhe bwo hejuru bwimyenda yumurongo. Umuvuduko usanzwe: 2-15 m / min, urwego ruhoraho rukora 3-8 m / min, imyenda yoroheje / imirongo yihuta kugera kuri 10-15 m / min. Inzitizi zituruka ku kwinjirira mu nda: imyenda igomba kuba yuzuyemo emulioni ya PTFE muri fibre bundle imbere - umuvuduko mwinshi cyane utera gusama bidahagije, inzara ya resin hamwe na fibre yumye; emulsion viscosity, solide yibanze, imyenda yububoshyi byose bigabanya umuvuduko winjira, bisaba umuvuduko muke kumyenda yuzuye / yuzuye. Impapuro zipfundikirwa: passe nyinshi (2-6 +) zisabwa kugirango uburinganire bwuzuye butagira inenge; ubanza gutsindira gahoro gahoro, ibyakurikiyeho birashobora kwiyongera muburyo bugaragara.

Iyi ngingo igereranya itandukaniro riri hagati yubushyuhe bwimirasire yubushyuhe hamwe nubushyuhe bwumuyaga ushyushye kumiterere ihuza imiterere ya silicone yometse kumurongo. Uburyo bwo guhererekanya ubushyuhe: umuyaga ushyushye ni convection-itwara, yoroheje kandi itera imbere, ikora ubushyuhe buringaniye; IR ni imishwarara-yinjiza hamwe nubutaka bukabije (micrometero kugeza kuri milimetero) bikora hejuru cyane-imbere-imbere. Ingaruka ku gukwirakwiza ubucucike: umuyaga ushyushye utuma ibice by'imbere n'inyuma byinjira mu bushyuhe bw’ibirunga hafi icyarimwe, bigatanga ubucucike bumwe bwimbitse; IR itera urwego rwo hejuru gukira ako kanya rukora uruhu rwinshi rubuza ihererekanyabubasha, bikavamo gradient ikaze yubucucike bwa crosslink igabanuka kuva imbere imbere.