Iyi ngingo ikubiyemo porogaramu ya PTFE yubushyuhe bwo hejuru mubikoresho bya karubone fibre yibicuruzwa. Gucomeka gushushanya: bishyizwe hagati yububiko na preregs birinda epoxy resin gufatira, bigafasha kumeneka byoroshye; ushyizwe hagati yibice byinshi byoroshye kugirango wirinde gufatana. Gufata umufuka wa Vacuum: kongera gusohora firime hagati yigitambaro cyo guhumeka no guhumeka, kwemerera gaze / resin kunyura mugihe gishobora gukuramo byoroshye nyuma yo gukira; Uruhande rwimura rwimura neza kugirango rutezimbere guhuza, gukuraho umucanga. Umusaruro uhoraho: imikandara ya convoyeur idafite inkoni itwara prereges binyuze mu gushyushya / gukanda; cushion layer ikwirakwiza igitutu kuringaniza kugabanya indentations zaho.

Iyi ngingo irasuzuma uburyo bwo kuvura umuriro kugirango PTFE ihindurwe kandi igereranya ingaruka nubuvuzi bwa corona na plasma. Ibishoboka: flame irashobora guhindura PTFE ariko gake ikoreshwa munganda - ibyago byumutekano (PTFE ibora kurekura uburozi bwa HF na perfluoroisobutylene); imikorere igarukira (ingufu zubutaka 30-35 mN / m gusa, ikora imipaka idakomeye). Uburyo bukora: flame - okiside yubushyuhe bwo hejuru (> 1000 ° C), gutobora gake, amatsinda make ya ogisijeni; corona - isohoka rya voltage nyinshi itanga ozone / okisijeni ikora, okiside yoroheje, ubwinshi bwingufu ntishobora guca imigozi ya CF; plasma - ibice byinshi byingufu / electron / radicals yubusa itandukanya neza imigozi ya CF hamwe nitsinda rya polar (hydroxyl, carboxyl, amino).

Iyi ngingo ikubiyemo uburyo bwo guhuza umuvuduko wumurongo wumurongo hamwe nuburebure bwa furu kugirango hamenyekane ko imiti ya organosilicone igera kurwego rwo gukiza kurwego rwo hejuru rwa PTFE. Ihame ryibanze rihuye: igihe cyose cyo gutura t_total = uburebure bwa furu burebure L ÷ umurongo umuvuduko v ugomba kuba munsi yigihe gito gisabwa cyo gukira. Shakisha imiti ikiza ukoresheje DSC cyangwa ibizamini byo gukiza byerekana 'ubushyuhe - igihe gito cyo gukiza ' umubano. Icyitegererezo cyo gukiza kimwe: kugabanya ifuru muri zone, kubara ti = Li / v na tcure (Ti), menya ∑ (ti / tcure (Ti)) ≥1. Uburyo bwo kubara: shiraho ubushyuhe bwuburebure bwa Li n'ubushyuhe Ti; shiraho umurongo wihuta v, ubare buri zone igihe cyo gutura nigipimo cyintererano; gusubiramo kugeza byose hamwe ≥1 (margin umutekano 1.1-1.2 bisabwa).

Iyi ngingo ikubiyemo imikorere ya PTFE mumashanyarazi ya misile. Uburyo bune: Kwangirika kwa Endothermic - PTFE depolymerize kuri ~ 400 ° C kugeza tetrafluoroethylene (endothermic cyane, ~ 3000 ° C ya gaze yaka umuriro), ikurura ubushyuhe bwinshi kandi ikuramo ingufu zumuriro hejuru yurukuta. Gukonjesha Transpiration hamwe na gaze ya gaz - imyuka yangirika (tetrafluoroethylene) yinjira hanze ikoresheje micro-pore, ikuraho ubushyuhe bwo hejuru; firime ya gazi itemba itandukanya gaze yubushyuhe bwo hejuru kurukuta, igabanya ubushyuhe bwurukuta hafi ya> 50%; gazi ya gaz ihindura imipaka yumuvuduko / ubushyuhe, kugabanya isuri.

Iyi ngingo ikubiyemo ingaruka ziterwa na gamma-ray kumirasire ya PTFE nimiterere. Imiterere yimiti ihinduka: imirasire ya gamma isenya iminyururu nyamukuru ya CC nu munyururu wa CF (G-agaciro 3.0-3.5), itera urunigi runini no kugabanuka kwa molekile bikabije; muri ogisijeni, radicals yubusa ikora peroxy radicals itangiza acyl fluoride na acide karubasi ya acide (hydrolyzing to HF). Imiterere ihindagurika: ihinduka rya kristu irazamuka muburyo bwambere (ikinini gito, iminyururu migufi yongeye gutondekanya) hanyuma igwa (ikinini kinini, inenge ihungabanya kristu); kristu ya lamellar igabanyijemo uduce duto twa kristalite hamwe no kubura intera ndende. Kwangirika k'umutungo: kurambura kuruhuka bigabanuka kuva 0.1 kGy mu kirere, gutakaza> 90% kuri ~ 1kGy - ibikoresho biba bikomeye kandi byoroshye; gushonga bigabanuka kuva kuri 327 ° C kugeza munsi ya 310 ° C; amatsinda ya polar azamura gato dielectric ihoraho / gutakaza; isura ihinduka kuva cyera kugeza imvi / umukara hamwe no gutakaza gloss.

Iyi ngingo ikubiyemo uburyo bwo kugenzura ububobere bwa PTFE ku mwenda wo hejuru wa Teflon. Igipimo cyo gukonjesha kiragaragara cyane kandi gifite akamaro: Gukonjesha byihuse (kuzimya) ukoresheje umwenda ukonje, imizingo ikonjesha cyangwa ibigega byamazi - iminyururu ya molekile irahagarara mbere yo gutegekwa, ikora kristu ntoya idatunganye; gutwikira biroroshye, birakomeye hamwe nuburyo bwiza bwo gukora butari inkoni, kugabanuka gukomeye / kwihanganira kwambara. Gukonjesha buhoro (annealing) ukoresheje igice cyo kubika ubushyuhe kuri 10-50 ° C / h cyangwa gukonjesha itanura - iminyururu ya molekile itondekanya rwose muri spherulite nini yuzuye; gutwikira bifite ubukana bwinshi, kwihanganira kwambara bidasanzwe, ibipimo bihamye, kugabanya guhinduka no kwiyongera.

Iyi ngingo ikubiyemo ikoreshwa rya Teflon yubushyuhe bwo hejuru mu ziko ryashyushye. Ibishoboka: birashobora gukoreshwa nkudushumi twinshi ku mukandara wa meshi cyangwa tray mugihe ubushyuhe bwitanura ≤260 ° C (gukama ubushyuhe buke, kuvanaho binder, gukiza ibishishwa) - bitezimbere kumanura no gutora neza. Birabujijwe cyane ku bushyuhe bwo hagati / hejuru (300-950 ° C) - PTFE ibora kurekura ubumara bwa HF na perfluoroisobutylene, ibikoresho byangiza kandi bitera uburozi bwica. Ihame ryumutekano: niba ubushyuhe bwitanura budasobanutse cyangwa budashobora kwizerwa munsi ya 260 ° C, ntukoreshe. Ibintu nyamukuru: serivisi zihoraho -70 ° C kugeza 260 ° C, igihe gito 300 ° C; gukabya gukabije kutagira inkoni na chimique; amashanyarazi meza cyane; ubukana buke (~ 0.04); base ya fiberglass itanga imbaraga zingana.

Iyi ngingo igereranya itandukaniro riri hagati yo gushyushya imirasire yimirasire nuburyo bwo gushyushya umuyaga ushushe uburyo bwo gukiza uburyo bwo guhuza imiterere ihuza imiterere ya silicone. Uburyo bwo guhererekanya ubushyuhe: ikirere gishyushye gishingiye kuri convection-itwarwa nubushyuhe bworoheje bwiyongera, itandukaniro rito ryimbere / hanze; IR ifite ubujyakuzimu bwimbitse hamwe no kwinjiza cyane (micrometero mirongo kugeza ku magana) bikora hejuru cyane-imbere-imbere. Ingaruka ku guhuza kwambukiranya: umwuka-ushyushye utuma gukira gukira imbere no hanze hamwe n'ubucucike bumwe; IR itera urwego rwo hejuru gukora byihuse 'firime yuruhu ' ibuza gutwara ubushyuhe no kugenda kwimbere imbere, bigatuma ubucucike bwambukiranya bugabanuka kuva hejuru kugeza imbere.

Iyi ngingo ikubiyemo umurongo wihuta wumurongo wa Teflon yubushyuhe bwo hejuru bwimyenda yo kwinjiza. Umuvuduko uringaniye: ibicuruzwa bisanzwe bisanzwe (0.08-0.30mm) kuri 0.5-3 m / min, bihamye kuri 1-3 m / min; umubyimba / ibicuruzwa byinshi byatewe (≥0.4mm) kuri 0.3-1 m / min; imirongo ikora neza hamwe nitanura rirerire irashobora kugera kuri 3-6 m / min ariko ibikoresho bisaba. Inzitizi zikorwa: gukama no gucumura bisaba igihe cyo gutura (PTFE ikenera min 1-3 min kuri 380-400 ° C; bidahagije bitera kwifata nabi / guturika); umuvuduko ugenwa nigihe gito cyo kumisha / gucumura munsi yuburebure bwa furu. Inzitizi zibintu: ibintu bikomeye / ikwirakwizwa ryinshi ryinjira buhoro; imyenda yuzuye / yuzuye ikurura amazi kandi ikohereza ubushyuhe buhoro; imyenda yagutse ikunda gutandukana hagati-hagati ibara risaba kugabanya umuvuduko. Ibikoresho hamwe nubucuruzi bufite ireme: amashyiga maremare menshi ya zone yemerera umuvuduko mwinshi.

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.