Ilaphu le-fiberglass egqunywe nge-PTFE yimathiriyeli edibeneyo eyenziwe ngokufaka ilaphu le-fiberglass eline-polytetrafluoroethylene (PTFE) dispersion kwaye emva koko i-sintering kubushushu obuphezulu. Ulwakhiwo lwayo lunokwahlulwa lube ngamacandelo amabini: i-PTFE yokwaleka kunye nelaphu lesiseko se-fiberglass.
Kwiindawo ezinobungozi bekhemikhali, utshintsho lwesakhiwo luxhomekeke kuhlobo, ugxininiso, kunye nobushushu bendawo engcolileyo, kunye nokuba ihlasela ngokuyinhloko i-coating okanye i-substrate. Makhe sihlolisise lo maleko ngokomaleko ngokwembono yabavelisi belaphu le-fiberglass eqatywe nge-PTFE:
I. Utshintsho kwi-PTFE Coating: Izinzile ngokugqithisileyo kuMatyala amaninzi
I-PTFE idume ngokuba 'yiKumkani yeePlastiki' ngenxa yeebhondi zayo ezinamandla kakhulu zekhabhoni-fluorine kunye nokungangeni kweekhemikhali eziphezulu kakhulu. Kwiindawo eziqhelekileyo ezinobume bekhemikhali (kubandakanya ukubilisa i-aqua regia, i-asidi yesulfuric egxininisiweyo, i-nitric acid egxininisiweyo, izinyibilikisi eziphilayo, njl. njl.), ulwakhiwo lwetsheyina lemolekyuli alukho utshintsho lweekhemikhali. Nangona kunjalo, phantsi kwezi meko zinzima zilandelayo, isakhiwo siya konakaliswa:
- Utshintsho lweZakhiwo: Iintsimbi zealkali ziya kukhupha iiathom zefluorine kwi-PTFE, ezibangela ukusabela kwe-dehydrofluorination. Amaqela -CF₂- kwitsheyini yeemolekyuli atshatyalaliswa, enza i-carbon-carbon double bonds (-C = C-) kwaye emva koko ikhokelela kwi-carbonization.
- Ukubonakaliswa kweMacroscopic: Ukutshintsha kwengubo ukusuka kumhlophe mhlophe / ukuguquguquka ukuya kumdaka okanye kumnyama, kuphulukana nokuguquguquka, kuba brittle, kunye nomgubo. Oku kukonakala okuqhelekileyo kweekhemikhali.
2. Iiarhente zeFluorinating ezinamandla kunye neeHalogenated Hydrocarbons ezithile (phantsi kobushushu obuphezulu kunye noxinzelelo)
- I-Elemental fluorine (F₂), i-chlorine trifluoride (ClF₃), kunye nee-agent ezifanayo ziyakwazi ukuphula i-carbon-carbon backbone, ebangela ukuba i-coating ibole.
- Phantsi kobushushu obuphezulu kunye noxinzelelo, ezinye izinyibilikisi zohlobo lwe-Freon zinokubangela ukudumba okukhulu kwe-PTFE. Nangona ukusabela kweekhemikhali kungenakwenzeka, isakhiwo somzimba sihlupheka ngenxa yokunciphisa i-crystallinity, ukwanda kwevolumu, kunye nokulahlekelwa kwamandla ngenxa yokunyanzeliswa kwamakhonkco e-molecular.
3. Ii-Acids eziOxidizing ezinamandla kumaqondo obushushu aphezulu
- Ukuntywiliselwa ixesha elide kwi-asidi ye-nitric evuthayo okanye i-asidi yesulfuric eshushu egxininisiweyo inokucotha i-oxidize umphezulu we-PTFE, ukwazisa amaqela amhlophe afana namaqela e-carbonyl kunye ne-hydroxyl, kunye nokwandisa amandla angaphezulu. Nangona kunjalo, oku kunqabile ukubonwa kwizicelo eziqhelekileyo.
Inqaku eliPhambili: Kuninzi olukhulu lwamajelo eendaba ekhemikhali, i-PTFE yokwambathisa ngokwayo ngokwesakhiwo 'ayitshintshi.' Nangona kunjalo, ingxaki ihlala ikwinyani yokuba ayinyanzeleki ngokupheleleyo, kunye nakwi-morphology yayo yomzimba.
II. Utshintsho kwi-Fiberglass Base Fabric: Ikhonkco elibuthathaka kwiNdawo yonke
Amacandelo aphambili e-fiberglass yi-silicon dioxide (SiO₂) kunye nezinye ii-oxide zetsimbi. Emva kokuba le nxalenye idliwe, isakhiwo esipheleleyo selaphu eliphezulu lobushushu liya kudilika.
1. Uhlaselo oluBubulalayo lwe-Hydrofluoric Acid (HF)
- Utshintsho lweZakhiwo: I-HF ifumana impendulo ethile nge-SiO₂: SiO₂ + 4HF → SiF₄↑ + 2H₂O. I-fiberglass skeleton ichithwa ngokuthe ngqo kwaye iyanyamalala.
-Ukubonakaliswa kweMacroscopic: Umphezulu welaphu uphelelwa ngamandla ngokukhawuleza, ufana nolusu oluthambileyo olushiyekileyo kuphela, lukrazuka lula xa lutsalwa, ngokwahlukana okukhulu phakathi kwengubo kunye ne-substrate. Le yeyona khemikhali yoyikeka kakhulu kwi-corrosion ye-glass-fiber-based materials. Ngethuba nje kukho i-pinholes kwi-coating okanye imiphetho eveziweyo, umonakalo unobungozi.
2. Ukucofa okucothayo ziiAlkalis Ezomeleleyo (ingakumbi iialkali ezigxininisiweyo ezishushu)
- Utshintsho lweZakhiwo: I-OH⁻ ion iphula iibhondi ze-siloxane (-Si-O-Si-) kwinethiwekhi yeglasi, zenza i-silicates e-soluble. Umphezulu wefiber uyatshintsha ukusuka kumtyibilizi ukuya kurhabaxa, kunye nemingxuma yokuqhafaza kunye neentanda ezivelayo, idiameter yefiber ibe bhityile, kwaye ekugqibeleni iyaphuka.
- Ukubonakaliswa kweMacroscopic: Amandla ayancipha ngokuqhubekayo, ilaphu liba brittle, kwaye xa ligobile, iifiber eziqhekekileyo ziphuma kwi-coating, ebangela ukuba i-coating iqhekeke kwaye ixoke.
- Utshintsho lweZakhiwo: Ii-asidi eziqhelekileyo (i-hydrochloric acid, i-asidi ye-sulfuric, njl.) ngokukhethekileyo zikhupha amacandelo angenayo i-silica (njenge-aluminium, i-calcium oxides, njl.) kwi-fiberglass, eshiya ubukhulu becala i-silica skeleton. Le nkqubo yaziwa ngokuqhelekileyo njenge 'leaching,' eyenza i microporous structure kwifiber surface.
- Ukubonakaliswa kweMacroscopic: Ilaphu liba nzima kwaye libe lukhuni ngakumbi, kunye notshintsho kwi-shrinkage, nangona ifom epheleleyo inokugcinwa. Amandla ayancipha ngenxa yoxinzelelo loxinzelelo.
III. Utshintsho kwi-Composite Interface: Ukungaphumeleli okufihliweyo
Iimeko zemichiza kaninzi azihlaseli intloko kodwa endaweni yoko zingena zisuka emaphethelweni okanye nge-micro-defects.
- Ukungena kunye ne-Delamination: I-solvents ye-Organic okanye izisombululo ze-asidi zingena nge-pinholes, i-micro-cracks, okanye i-cut edges kwi-coating ye-PTFE, ihlasela i-fiberglass. Iimveliso zokusabela okanye ulwelo olugqobhozayo luqokelelana kujongano, luvelisa uxinzelelo lweosmotic, lubangela ukuba iPTFE yokwambatho ibe namadyungudyungu kwaye idilize ukusuka kwi-fiberglass substrate kumlinganiselo omkhulu.
-Stress Corrosion Cracking: Ilaphu elinobushushu obuphezulu liphantsi koxinzelelo ngexesha lokusetyenziswa. I-corrosion ye-fiberglass yi-media media (ingakumbi i-alkalis eyomeleleyo) yenza i-synergistically kunye noxinzelelo lwe-mechanical, ebangela iintanda ukuba zisasazeke ngokukhawuleza kwicala le-fiber radial direction, ekhokelela ekuqhekekeni kwelaphu ngequbuliso kunye ne-morphology ecocekileyo ye-brittle-fracture ngexesha lekhefu.
Kwiindawo ezinobungozi bekhemikhali, utshintsho lwesakhiwo se-PTFE-coated fiberglass fabric singashwankathelwa ngolu hlobo: 'King of Plastics' i-coating ihlala iphantse iqiniswe njengentaba, ngelixa i-fiberglass base fabric-eye yangena okanye ihlaselwe-iba yi-Achilles' isithende, ekhokelela kwi-skeleton dissolution, i-delaps kunye ne-interface yonke.
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Olu lwazi lungentla lunikezelwa ngu I-Jiangsu Aoke yeTekhnoloji eNtsha yeTekhnoloji Co., Ltd.
Ukuba ungathanda ukufunda ngakumbi malunga neeparamitha ezineenkcukacha, iimeko zesicelo, kunye neenketho zokwenza ngokwezifiso uluhlu lwethu olupheleleyo lweemveliso-kubandakanya i-PTFE-coated fiberglass ilaphu, i-PTFE-coated fiberglass tape, i-PTFE-coated fiberglass mesh belt, amabhanti anamathele-anamathele angenamthungo, i-single-sided PTFE-belt-high-lahti, i-contact-high, Ilaphu le-fiberglass elixhathisayo-nceda uzive ukhululekile ukuqhagamshelana nathi:
Imfonomfono:
Mnu. Guo: 18944819998
UMnu. Liu: 13705266308
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