Maqaalkani wuxuu daboolayaa sida loo waafajiyo xawaaraha khadka mashiinka daahan iyo dhererka foornada si loo hubiyo in xabagta organosilicone ay gaarto heerka lagu daweynayo ee loogu talagalay cajalad PTFE heerkul sare leh. Mabda'a u dhigma ee xudunta u ah: wadarta wakhtiga degenaanshaha t_total = dhererka foornada wax ku ool ah L ÷ xawaraha xariiqda v waa in aanu ka yarayn wakhtiga daawaynta ee ugu yar ee loo baahan yahay. Ku hel sifooyin daawaynta adoo isticmaalaya DSC ama tijaabooyinka daawaynta dhejiska ah ee dhidibada u aasaya 'Heerkulka - wakhtiga ugu yar ee daawaynta' xidhiidhka. Qaabka daawaynta u dhigma: U qaybi foornada aagag, xisaabi ti=Li/v iyo tcure(Ti), hubi ∑(ti/tcure(Ti)) ≥1. Hababka xisaabinta: deji aagagga heerkulka leh dhererka Li iyo heerkulka Ti; deji xawaaraha xariiqda v, xisaabi aag walba wakhtiga degenaanshaha iyo saamiga wax ku biirinta; dib u celi ilaa wadarta guud ≥1 (margin badqabka 1.1-1.2 lagu taliyay).

Maqaalkani waxa uu daboolayaa saamaynta shucaaca gamma-ray-ga ee qaabka PTFE iyo guryaha. Qaab dhismeedka kiimikaad ayaa isbeddela: fallaadhaha gammadu waxay jebiyaan silsiladaha waaweyn ee CC iyo silsiladaha dhinaca CF (G-qiimaha 3.0-3.5), taasoo keenaysa maqas silsilad weyn iyo hoos u dhac weyn oo miisaanka unugyada; Ogsajiinta, xagjirrada xorta ah waxay sameeyaan peroxy radicals oo soo bandhigaya acyl fluoride iyo karboksylic acid kooxaha dhamaadka (hydrolyzing to HF). Qaab dhismeedka isku dhafan ayaa isbeddelaya: crystallinity ayaa kor u kaca bilawga (qiyaas hoose, silsilado gaaban dib u habeyn) ka dibna hoos u dhaco (qiyaas sare, cillado waxay carqaladeeyaan crystals); Kiristaalo-lamellars ayaa u kala qaybsama crystallites yar-yar oo leh nidaam fog oo la waayay. Xumaanta hantida: Kordhinta nasashada waxay hoos u dhacdaa 0.1kGy hawada, luminta> 90% ~ 1kGy - alaabtu waxay noqotaa mid adag oo jilicsan; dhibicda dhalaalka waxay hoos uga dhacdaa 327 ° C ilaa 310 ° C; Kooxaha polar-ka ayaa wax yar kor u qaada koronto joogto ah / lumis; oogada oogada waxay ka beddeshaa caddaan ilaa cawl/madow oo leh dhaldhalaalaan.

Maqaalkani waxa uu daboolayaa faa'iidooyinka codsiga Teflon dharka heerkulka sare ee lithium batteriga qalajinta. Loo isticmaalo sidii suumanka gudbinta ama foornada, xalinta saddex mashaakil oo asaasi ah: xabagta slurry, daxalka, iyo xoqitaanka korantada. Afar meelood oo faa'iido leh: Tayada korantada iyo wax-soosaarka - guryaha lidka ku ah waxay ka hortagayaan ku-xidhka PVDF ee awood u siinaya diirritaan dhammaystiran oo fudud; kulaylka isku midka ah ee 100-140 ° C waxay ka hortagtaa dildilaaca / gubashada; dusha siman waxay baabi'isaa xagashada iyo daadinta budada; Waarta iyo xasilloonida hawlgalka - iska caabbinta kiimikaad ee ka soo horjeeda dareeraha NMP iyo uumiga korantada iyada oo aan barar / gaboow lahayn; xoogga sare ee xajinta iyo xasilloonida cabbirka ee ka soo baxa substrate-ka fiberglas-ka ee meelaynta saxda ah; nadiifin fudud oo leh hadhaaga ugu yar marka loo eego suumanka mesh birta.

Maqaalkani waxa uu daboolayaa ifafaale delamination ee Teflon dharka heerkulka sare. Delamination waxaa loola jeedaa kala-soocidda iyo diirinta u dhaxaysa daahan PTFE oogada iyo marada salka fiberglass gudaha ama inta u dhaxaysa lakabyo badan oo daahan. Muuqaalo muuqaal ah: finan/ bararo (xumbo kor u kacay oo leh dareen godan) sida calaamadaha hore; diirinta dhexda oo leh dahaar si fudud looga saaro go'yaal muujinaya muraayadda cad; caddayn meelaysan oo ay ku xigto kuleyl/xun ka dib. Sababaha ugu muhiimsan: Burburka cadaadiska kulaylka - isugeynta fidinta kulaylka ee kala duwan ee u dhexeeya PTFE iyo fiberglass waxay abuurtaa walaac gudaha ah, wareegyada kuleylka / qaboojinta degdega ah waxay keenaan kala go'; Cilladaha tayada wax soo saarka - daawaynta dusha sare ee fiberglass oo aan ku filnayn, impregnation PTFE liidata, sintayn ku filan oo keenaysa isku xidhka wajiga oo daciif ah.

Maqaalkani wuxuu eegayaa isbeddelada qaabdhismeedka ee dharka heerkulka sare ee PTFE inta lagu jiro da'da. Afar arrimood: PTFE daahan microstructure - maqaarka silsilad molecular iyo oxidation (carbonyl/carboxyl kooxda formation), crystallinity isbedel (hore kor u kaca ka dibna dumo), micro-dillaaca iyo samaynta pinhole, dusha budada; Substrate fiber galaas iyo interface - kala goynta wakiilka cabbirka/isku xidhka taasoo keenaysa luminta isku xidhka, debonding interfacial and delamination (caabuqa, meelaha cad), nabaad guurka shabagga fiber galaas iyo embrittlement, roobka birta alkali oxide sababa daxal stress; Qaab dhismeedka macroscopic iyo muuqaalka - midabka isbeddelka (caddaan → beige → bunni → madow), qallafsanaan iyo laallaab, dusha sare oo qallafsan iyo luminta dhaldhalaalka, budada marka la taabto, luminta dabacsanaanta buuxda. Nuxurka gabowga: geeddi-socod horumarsan oo ah 'hoos u dhigista dahaarka → fashilka interface → hoos u dhaca substrate.'

Maqaalkani wuxuu sharxayaa qaabka isbeddelka xoogga isku-dhafka ah ee lakabka dhejiska heerkulka-sare ee PTFE ka dib gabow heerkul sare ah. Qaabka saddex-marxaladda ah: Marxaladda kor u kaca ee daawaynta ka dib (heerkulka hore ee heerkulka 200-260 ° C, kooxaha falcelinta hadhaaga ahi waxay sii wadaan isku-xidhka, isku-duubnida ayaa si weyn u kordheysa); Marxaladda dheellitirka xasilloonida (hababka isdhaafsiga ee dhammaystirka, isku xirnaanta ayaa weli ah mid deggan muddo dheer); Hoos u dhaca iyo heerka hoos u dhaca (waqtiga xad-dhaafka ah/heerkulka ayaa keena hoos u dhaca silsiladda, isku xirnaanta ayaa hoos u dhacda, koollada ayaa jilcisa oo noqda mid adag). Sababaha xididka ah ee fashilka wadajirka ah ( dildilaaca gudaha ee haraaga ka tagaya) iyo tuujin (qulqulka qabow ee ka imanaya geesaha sababtoo ah moodeelka oo yaraada) ayaa la falanqeeyay.

Maqaalkani wuxuu faahfaahinayaa codsiyada Teflon dharka heerkulka sare ee warshadaha tamarta qorraxda. Codsiga muhiimka ah ee lakabka moduleka: dharka lagu sii daayo ee lagu dhejiyay kor/hoosaha cutubyada PV waxay ka hortagtaa dhalaalidda EVA (140-150°C) inay ku dhegto kuleyliyaha saxan ama caag, ilaalinta qalabka iyo hubinta dusha moduleka siman; suumanka kombuyuutarrada ee rarida/dejinta tooska ah; Dharka ilaalinta caagga ah oo fidinaya nolosha adeegga. Alxanka xadhkaha unugga: suunka qaadaha qaada ee sidda unugyo iyo ribbon dhexmara aagga kululaynta, oo leh dusha aan dhegta lahayn oo iska caabinaysa qulqulka iyo qulqulka alxanka; barkimooyin kuleyliyaha loogu talagalay goobaha shaqada ee alxanka. Xakamaynta heerkulka sare: duubista tuubooyinka kuleylka, heerkulbeegyada, fiilooyinka laminators iyo foornooyinka daaweynta; qalabka daahyada dahaarka kulaylka iyo gaashaan.

Maqaalkani waxa uu daboolayaa tillaabooyinka pretreatment looga baahan yahay dharka fiberglass ka hor PTFE emulsion impregnation. Tallaabada 1: Daawaynta kulaylka 300-450 ° C si aad si buuxda uga saartid wax paraffin iyo saliidaha dushiisa fiber (paraffin wax, istaarijka istaarijka), maadada cabbirka hadhaaga ayaa looga baahan yahay wax ka hooseeya 0.2%, soo saarista 'dharka kulaylka-deexed.' Tallaabo 2: Daaweynta kiimikada dusha sare - Codsiga silane coupling agents, KH-550 samee filimka isku xidhka kiimikaad ee dusha fiber, awood u siinaya buundada molecular ee u dhaxaysa fiilooyinka galaaska ee aan organic iyo PTFE organic; Dharka hore loo daaweeyay ee ganacsi ahaan loo heli karo way ka boodi karaan tallaabadan laakiin waa in la xaqiijiyaa. Talaabada 3: Qalajinta iyo kuleylinta ka hor - qalajinta 80-120 ° C 1-2 saacadood si loo yareeyo qoyaanka ka hooseeya 0.1%, ka hortagga xumbo/samaynta maran inta lagu jiro daaweynta.

Maqaalkani waxa uu soo bandhigayaa habab lagu wanaajiyo iska caabinta gurguurta iyo xajinta muddada dheer ee xajinta sare ee Teflon cajalad heerkul sare ah. Xeeladaha waxaa ka mid ah: Hagaajinta shabakada molecular-ka sare ee resin/ratio xabagta MQ (1.2:1–2:1) waxay samaysaa goobo adag oo adag; isku darka kooxaha phenyl (20-30 mol%) waxay xannibaysaa dhaqdhaqaaqa silsiladda; Miisaanka molecular ee isdhaafka ah ayaa lagu xakameeyay 5,000-15,000 g/mol; Qaab dhismeedka koollada kala duwan ee modules - lakabka asaasiga ah (1-3μm) oo leh wakiilka isku-xidhka silane, lakabka sare ee isku-xidhka ah (30-50μm) sida qalfoof u adkaysta dhogorta, lakabka shaqaynta viscoelastic (3-8μm) ee qoynta dusha sare; Nanofillers - silica qiiqa leh (10-25 wt%) oo leh wax ka beddelka dusha sare waxay abuurtaa isku xidhid jireed oo la beddeli karo.

Maqaalkani waxa uu sharxayaa sida daahan PTFE curaarta in substrate marada fiberglass in Teflon maro heerkul sare. Isku xidhka tooska ah ee kiimikadu waa wax aan suurtagal ahayn sababtoo ah tamarta dusha aadka u hooseeya ee PTFE. Isku-xidhka waxa lagu gaaraa: Isku xidhid makaanikal (isku xidhid jireed) - Emulsion PTFE waxa uu galaa godadka fiber-ka wuxuuna qabtaa xidhmooyin fiber ka dib marka la isku xidho; Daaweynta isku dhafka ah ee Silane - waxay samaysaa buundada molecular ee u dhaxaysa fiilooyinka galaaska ee aan noolaha ahayn iyo alwaax dabiici ah; Lakabka kala-guurka kiimikaad - iyadoo la adeegsanayo PAI, PPS, PES ama PEEK resins oo leh budada PTFE, la marsaday daawaynta isku-xidhka ka dib si loo abuuro lakab kala-guur oo adag; Ku-kulul-dhalashada filimka lamination - filimada FEP ama PFA (barta dhalaalaysa 260-310 ° C) isku xidhka aflaanta PTFE ee hore loo sameeyay ee dharka; Qaab dhismeedka gradient iyada oo loo marayo impregnation badan iyo wareegyada sintering - ku milo ka gudubka ugu horeysay leh binder/isku xidhka wakiil qoto dheer galay fiilooyinka, oo ay ku xigto impregnations PTFE saafi ah, abuurista gradient ka kooban fiberglass ilaa PTFE saafi ah.