Wannan labarin ya shafi yadda za a dace shafi na'ura line gudun da tanda tsawon don tabbatar organosilicone m kai manufa curing digiri ga high-zazzabi PTFE tef. Ƙa'idar da ta dace da mahimmanci: jimlar lokacin zama t_total = ingantaccen tsawon tanda L ÷ saurin layin v dole ne ya zama ƙasa da mafi ƙarancin lokacin magani. Sami halayen magani ta hanyar DSC ko gwaje-gwajen warkarwa na manne da ke kafa dangantaka 'zazzabi - mafi ƙarancin lokacin magani'. Daidaitaccen samfurin magani: raba tanda zuwa yankuna, ƙididdige ti=Li/v da tcure(Ti), tabbatar ∑(ti/tcure(Ti)) ≥1. Hanyoyin ƙididdiga: saita yankunan zafin jiki tare da tsayin Li da yanayin zafi Ti; saita saurin layi v, ƙididdige lokacin zaman kowane yanki da rabon gudummawa; sake maimaita har zuwa jimlar ≥1 (shawarar iyakar tsaro 1.1-1.2).

Wannan labarin ya ƙunshi tasirin illolin gamma-ray akan tsari da kaddarorin PTFE. Canje-canjen tsarin sinadarai: haskoki gamma suna karya manyan sarƙoƙi na CC da sarƙoƙin gefe na CF (G-darajar 3.0-3.5), yana haifar da ƙaƙƙarfan sarƙoƙi da faɗuwar nauyin kwayoyin halitta; a cikin iskar oxygen, radicals masu kyauta suna samar da peroxy radicals suna gabatar da acyl fluoride da ƙungiyoyin ƙarshe na carboxylic acid (hydrolyzing zuwa HF). Tsarin tsari yana canzawa: crystallinity yana tasowa da farko (ƙananan kashi, gajeriyar sarƙoƙi sake tsarawa) sannan ya faɗi (mafi girman kashi, lahani ya rushe lu'ulu'u); lu'ulu'u lu'ulu'u sun rabu cikin ƙananan kristal tare da bacewar tsari mai tsayi. Lalacewar dukiya: elongation a raguwa ya ragu daga 0.1 kGy a cikin iska, rasa> 90% a ~ 1kGy - abu ya zama m da gaggautsa; Matsayin narkewa yana sauka daga 327 ° C zuwa ƙasa da 310 ° C; Ƙungiyoyin polar sun ɗan ɗaga dielectric akai-akai / asara; saman yana canzawa daga fari zuwa launin toka/baki tare da hasara mai sheki.

Wannan labarin ya ƙunshi fa'idodin aikace-aikacen Teflon masana'anta mai zafin jiki a bushewar baturi na lithium. An yi amfani da shi azaman bel na jigilar kaya ko tanda, yana magance manyan matsaloli guda uku: slurry adhesion, corrosion, and electrode scratching. Wuraren fa'ida guda huɗu: Ingancin Electrode da yawan amfanin ƙasa - kaddarorin anti-stick sun hana PVDF ɗaure mannewa yana ba da sauƙin peeling cikakke; daidaituwar yanayin thermal a 100-140 ° C yana hana fashewa / ƙonewa; m surface yana kawar da karce da zubar da foda; Ƙarfafawa da kwanciyar hankali na aiki - juriya na sinadarai a kan sauran ƙarfi na NMP da electrolyte vapors ba tare da kumburi / tsufa ba; high tensile ƙarfi da girma da kwanciyar hankali daga fiberglass substrate don daidai matsayi; sauƙin tsaftacewa tare da raguwa kaɗan idan aka kwatanta da bel ɗin raga na ƙarfe.

Wannan labarin ya ƙunshi al'amarin delamination na Teflon masana'anta mai zafin jiki. Delamination yana nufin rabuwa da peeling tsakanin surface PTFE shafi da ciki fiberglass tushe masana'anta ko tsakanin mahara shafi yadudduka. Bayyanar gani: blistering / ƙumburi (tasowar kumfa tare da raɗaɗi) azaman alamun farko; interlayer peeling tare da shafi sauƙi cire a cikin zanen gado fallasa farin fiberglass; farar fata na gida yana biye da flaking bayan zafi / gogayya. Babban dalilai: Lalacewar danniya na thermal - bambance-bambancen haɓaka haɓaka haɓakar thermal tsakanin PTFE da fiberglass suna haifar da damuwa na ciki, saurin dumama / sanyaya hawan keke yana haifar da raguwa; Production ingancin lahani - rashin isasshen fiberglass surface jiyya, matalauta PTFE impregnation, kasa sintering haddasa rauni interfacial bonding.

Wannan labarin yana nazarin canje-canjen tsari a cikin masana'anta mai zafin jiki na PTFE yayin tsufa. Hudu al'amurran: PTFE shafi microstructure - kwayoyin sarkar scission da hadawan abu da iskar shaka (carbonyl/carboxyl kungiyar samuwar), crystallinity canje-canje (farkon tashi to rushewa), micro-crack da pinhole samuwar, surface powdering; Gilashin fiber substrate da dubawa - sizing / hada guda biyu wakili bazuwar haifar da asarar bonding, interfacial debonding da delamination (blistering, fari yankunan), gilashin fiber cibiyar sadarwa yashwa da embrittlement, alkali karfe oxide hazo haddasa danniya lalata; Tsarin macroscopic da bayyanar - canjin launi (fari → beige → launin ruwan kasa → baƙar fata), raguwar nakasawa da curling, roughening surface da hasara mai sheki, powdering akan taɓawa, cikakkiyar asarar sassauci. Mahimmancin tsufa: tsarin ci gaba na 'lalata rufin asiri → gazawar mu'amala → lalata ƙasa.'

Wannan labarin ya bayyana yanayin canji a cikin ƙarfin haɗin gwiwa na PTFE babban zafin jiki na tef ɗin mannewa bayan babban zafin jiki. Tsarin matakai uku: Matakin tasowa bayan warkewa (farkon yanayin zafi mai zafi a 200-260 ° C, ƙungiyoyin da suka rage suna ci gaba da ƙetare, haɗin kai yana ƙaruwa sosai); Matakan daidaita daidaito (hanyoyin haɗin kai sun ƙare, haɗin kai ya kasance karko na dogon lokaci); Lalacewa da raguwar mataki (yawan lokaci/zazzabi yana haifar da lalacewar sarkar babba, haɗin kai yana raguwa, manne yana laushi kuma ya zama tacky). Abubuwan da ke haifar da gazawar haɗin gwiwa (tsagewar ciki ta bar ragowar) da matsi (sanyi ya kwarara daga gefuna saboda raguwar modul).

Wannan labarin yayi cikakken bayani game da aikace-aikacen Teflon masana'anta mai zafin jiki a cikin masana'antar makamashin hasken rana. Core aikace-aikace a cikin lamination module: saki masana'anta sanya a sama / kasa PV kayayyaki hana narkakkar EVA (140-150 ° C) adhering zuwa dumama farantin ko roba farantin, kayan aiki kariya da kuma tabbatar da santsi module saman; bel na jigilar laminator don saukewa / saukewa ta atomatik; roba platen kariyar masana'anta mika rayuwar sabis. Siyar da kirtani ta salula: bel ɗin na'ura mai ɗauke da sel da kintinkiri ta yankin dumama, tare da juriya mara tsayi da fashewar solder; dumama matashin dandali domin soldering workstations. Ƙunƙarar zafi mai zafi: nannade don bututun dumama, thermocouples, igiyoyi a cikin laminators da tanda; kayan aiki thermal rufi labule da garkuwa.

Wannan labarin ya ƙunshi matakan pretreatment da ake buƙata don masana'anta fiberglass kafin PTFE emulsion impregnation. Mataki na 1: Maganin zafi / dewaxing a 300-450 ° C don cire gaba daya paraffin kakin zuma da mai daga fiber surface (paraffin wax, sitaci derivatives), ragowar girman abun ciki da ake bukata a kasa 0.2%, samar da 'zafi-dewaxing masana'anta.' Mataki na 2: Surface sinadaran magani - aikace-aikace na silane coupling agents, KH-5550s (KH-550) samar da fim ɗin haɗin gwiwar sinadarai a kan fuskar fiber, yana ba da damar gada ta ƙwayoyin cuta tsakanin filayen gilashin inorganic da PTFE na halitta; Yadudduka da aka riga aka yi magani na kasuwanci na iya tsallake wannan matakin amma dole ne a tabbatar da su. Mataki na 3: bushewa da preheating - bushewa a 80-120 ° C na tsawon sa'o'i 1-2 don rage danshi da ke ƙasa 0.1%, hana kumfa/rauni samu yayin warkewa.

Wannan labarin yana gabatar da hanyoyin da za a inganta juriya mai raɗaɗi da kwanciyar hankali na dogon lokaci na babban tef ɗin zafi mai zafi na Teflon. Dabarun sun haɗa da: Ƙwararrun hanyoyin sadarwa na kwayoyin halitta - babban MQ resin/gum rabo na MQ (1.2:1-2:1) yana samar da yankuna masu wuyar gaske; haɗa ƙungiyoyin phenyl (20-30 mol%) yana hana motsin sarkar; crosslink nauyi mai sarrafa kansa a 5,000-15,000 g / mol; Gradient modules multilayer m tsarin - primer-anchoring Layer (1-3μm) tare da silane hada guda biyu wakili, high-modulus cohesive Layer (30-50μm) a matsayin karfi-resistant kwarangwal, viscoelastic aiki Layer (3-8μm) ga surface wetting; Nanofillers - silica fumed (10-25 wt%) tare da gyare-gyaren saman yana haifar da jujjuyawar haɗin kai ta jiki.

Wannan labarin ya bayyana yadda PTFE shafi shaidu zuwa fiberglass masana'anta substrate a Teflon high-zazzabi zane. Haɗin sinadaran kai tsaye ba zai yiwu ba saboda PTFE's ultra-low surface energy. Ana samun haɗin kai ta hanyar: Haɗin kai na injiniya (haɗin kai na jiki) - PTFE emulsion yana shiga raƙuman fiber kuma yana riƙe da daure fiber bayan sintering; Silane hadawa wakili pretreatment - Forms kwayoyin gada tsakanin inorganic gilashin zaruruwa da Organic primer; Layer canji na kemikal - ta amfani da PAI, PPS, PES ko PEEK resins tare da micropowder PTFE, ana amfani da shi bayan haɗawa da jiyya don ƙirƙirar ƙirar canji mai ƙarfi; Hot-narke m fim lamination - FEP ko PFA fina-finai (narkewar batu 260-310 ° C) bond pre-kafa PTFE fina-finan zuwa masana'anta; Tsarin gradient ta hanyar haɓakawa da yawa da hawan hawan igiyar ruwa - tsarma izinin farko tare da wakili mai ɗaure / haɗawa yana shiga zurfi cikin zaruruwa, sannan tsarkakakken PTFE impregnations, ƙirƙirar gradient abun ciki daga fiberglass zuwa PTFE mai tsabta.