Wannan labarin ya ƙunshi yuwuwar damar aikace-aikacen Teflon masana'anta mai zafin jiki a cikin masana'antar baturi mai ƙarfi mai tasowa. Wurare huɗu: Busassun lantarki / masana'anta membrane masana'anta - bel mai ɗaukar zafi mai zafi don matsawa mai zafi (150-250 ° C) yana ba da damar kwasfa mai laushi na fina-finai masu goyan bayan kai; zafi abin nadi rufe Layer a matsayin Semi-diddiddigar anti-sanda Layer; yana tabbatar da fim mai santsi, rage lahani, inganta yawan amfanin ƙasa. Sakin layi da madaidaicin madauri don matsa lamba mai zafi - batirin sulfide / polymer yana buƙatar zafi mai zafi na isostatic / lebur (100-300 ° C, dubun MPa); PTFE masana'anta sanya tsakanin baturi tari da mold hana mannewa, sa uniform matsa lamba rarraba via micro-elasticity, kare dumama faranti.

Wannan labarin yana nazarin canje-canje zuwa sarƙoƙi na kwayoyin PTFE a ƙarƙashin hasken ultraviolet. Babban sarkar da raguwar nauyin kwayoyin halitta: UV (254nm, 471 kJ/mol) karya CC bonds (347 kJ/mol), haifar da homolysis, samar da CF₂-kashe radicals kyauta, raguwar nauyin kwayoyin kaifi, asarar tauri da tsawo. Hanyoyin halayen halayen kyauta: a cikin oxygen, peroxy radicals form, rearranging to acyl fluoride (-COF) da carboxylic acid (-COOH) ƙungiyoyin ƙarshe, sakin COF₂ da CO₂ (COF₂ hydrolyzes zuwa HF); a cikin inert yanayi, rashin daidaituwa/sake hadewa ya mamaye, amma sarkar sarka ya kasance babba.

Wannan labarin ya ƙunshi aikace-aikace na Teflon masana'anta mai zafin jiki a cikin yadudduka masu ɗaukar zafi na sararin samaniya. Material jigon: PTFE-rufi fiberglass masana'anta, aka sani a cikin sararin sama kamar Beta zane, hada masana'anta sassauci da PTFE matsananci-muhalli inertness. Matsayi: Mafi girman Layer na Thermal Micrometeoroid Garment (TMG) a cikin raka'a na motsi, kai tsaye yana fuskantar injin, matsanancin zafin jiki, da micrometeoroids azaman shinge na farko na zahiri / thermal don fina-finai na alumini na ciki. Kariyar muhalli mai girma: yana jurewa -200 ° C zuwa + 260 ° C kewayon (masu fuskantar rana> 120 ° C zuwa inuwa -160 ° C); farin saman yana nuna hasken rana; yana ba da kariya ga fina-finai na polyimide masu rauni daga karce da hawaye. Taimakon motsi: ƙananan juzu'i na PTFE yana hana tangling Layer yayin lanƙwasa haɗin gwiwa, yana tabbatar da sassaucin EVA.

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 maida hankali ne akan hankula line gudun kewayon ga PTFE high-zazzabi masana'anta impregnation samar line. Matsakaicin gudun: 2-15 m/min, barga aiki kewayon 3-8 m/min, bakin ciki yadudduka / high-gudun Lines har zuwa 10-15 m/min. Matsaloli daga shigar ciki impregnation: masana'anta dole ne a cika cika da PTFE emulsion cikin fiber dam insides - ma high gudun sa rashin isasshen impregnation, guduro yunwa da bushe zaruruwa; emulsion danko, daskararrun maida hankali, masana'anta saƙa yawa duk rage shigar azzakari cikin farji kudi, bukatar a hankali gudun ga lokacin farin ciki / m yadudduka. Rufin wucewa: wucewa da yawa (2-6+) da ake buƙata don rufewa mara lahani mai yawa; na farko a hankali a hankali don angawa, za a iya ƙara madaidaicin wucewar wucewar.

Wannan labarin ya ƙunshi abun ciki na silica da yanayin aikace-aikacen masana'anta na fiber gilashin silica. Silica abun ciki ƙayyadaddun bayanai: core nuna alama SiO₂ ≥96% (misali 96-98%, premium maki> 99% via acid leaching da sintering, gabatowa tsarki ma'adini fiber). Ƙirƙira: Gilashin gilashin E-gilashi yana jurewa ruwan acid mai zafi don narkar da abubuwan da ba silica ba (boron oxide, sodium oxide), ƙirƙirar kwarangwal mai ƙyalƙyali mai ƙyalƙyali, sa'an nan kuma an yi shi don haɓakawa. Babban fa'idodin: ci gaba da sabis a 900 ° C a cikin yanayi mai oxidizing, ɗan gajeren lokaci sama da 1200 ° C, wurin laushi kusa da 1700 ° C; kwanciyar hankali na sinadarai akan mafi yawan acid/alkalis ban da HF da zafi phosphoric acid; low dielectric akai da kuma barga rufi a high yanayin zafi.

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 abubuwan da ke haifar da: Lalacewar danniya na thermal - bambance-bambancen haɓaka haɓakar 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 bayyana halayen ƙananan ƙwayoyin Teflon na masana'anta masu zafin jiki. Substrate kwarangwal: gilashin fiber saƙa texture a fili / twill saƙa tare da babban porosity (micron-sikelin pores a cikin fiber daure da kuma a warp-weft nodes) samar da sarari ga PTFE impregnation. Rufi ilimin halittar jiki: cikakken impregnation encapsulation forming 'reinforced kankare' Tsarin inda gilashi zaruruwa ake ƙarfafa lokaci, PTFE ne ci gaba da matrix; ƙananan nodular microstructure na nodules (barbashi) da ke haɗuwa da fibrils masu kyau da aka kafa a lokacin sintering; ci gaba da ɗigon fata mai yawa (da yawa zuwa dubun microns lokacin farin ciki) na PTFE mai tsafta a matsayin maɓalli mai shinge don rashin kuzarin sinadarai, kaddarorin da ba na sanda ba, da rufin lantarki.

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 sa'an nan 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 → lalatawar substrate.'

Wannan labarin ya shafi yadda ake sarrafa sintering lokaci na PTFE high-zazzabi masana'anta. Hanyar sarrafawa mai mahimmanci: daidaita saurin layi. Lokacin sintering = ingantaccen sashin dumama tsayin masana'anta gudun tafiya. Ingantacciyar madaidaicin madaidaicin ƙofa shine 350 ° C (sama da wannan zafin jiki ana ƙididdige shi azaman lokacin juyewa). Multi-zone zazzabi rarraba: preheating (100-250 ° C), sintering (360-395 ° C), high-zazzabi saitin (380-390 ° C), sanyaya (a kasa 300 ° C). Lokacin magana a 380-390°C: nauyi (0.08-0.13mm) 30-60 seconds; misali (0.18-0.25mm) 1.5-3 minti; nauyi (≥0.35mm) 3-5 mintuna. Ganewa da daidaitawa: Ƙarƙashin ƙaƙƙarfan ƙarfi (ƙananan ƙarfi, zubar da foda, ƙananan ƙwayoyin cuta) → rage gudu don tsawaita lokaci; over-sintering (yellowing, brittleness, farin hayaki) → ƙara gudun don rage zama. Daidaitan lokacin zafi yana ba da damar saurin saurin zafi (395-405°C, daƙiƙa) ko jinkirin jinkirin zafi (360-375°C, mintuna 5-8).