Ke liphetoho life tsa sebopeho tse tla etsahala ho lesela la fiberglass le koahetsoeng ke PTFE libakeng tse senyang lik'hemik'hale?

PTFE-coated fiberglass lesela ke lintho tse bonahalang tse entsoeng ka ho inregnating fiberglass lesela le polytetrafluoroethylene (PTFE) dispersion ebe sintering mocheso phahameng. Sebopeho sa eona se ka aroloa likarolo tse peli: ho roala PTFE le lesela la motheo la fiberglass.

 

Libakeng tse senyang lik'hemik'hale, liphetoho tsa sebopeho li itšetlehile ka mofuta, mahloriso le mocheso oa sebaka se senyang, hammoho le hore na se hlasela seaparo kapa substrate. Ha re hlahlobeng lera lena ka lera ho latela pono ea baetsi ba masela a fiberglass a koahetsoeng ke PTFE:

 

I. Liphetoho ho PTFE Coating: E ​​tsitsitse Haholo Maemong a Mangata

 

PTFE e tsebahala e le 'King of Plastics' ka lebaka la libonto tsa eona tse matla haholo tsa carbon-fluorine le ho se sebetse hantle ha lik'hemik'hale tse phahameng haholo. Libakeng tse tloaelehileng tse senyang lik'hemik'hale (ho kenyeletsoa ho belisa aqua regia, concentrated sulfuric acid, concentrated nitric acid, organic solvents, joalo-joalo), sebopeho sa eona sa ketane ea limolek'hule ha se na liphetoho tsa lik'hemik'hale. Leha ho le joalo, tlas'a maemo a latelang a feteletseng, mohaho o tla senyeha:

 

1. Metals Alkaline Metals / Matla a Alkaline Tharollo (mohlala, sodium, potasiamo, sodium hydroxide maemong a phahameng a mocheso)

 

- Liphetoho tsa Sebopeho: Metsoako ea alkali e tla ntša liathomo tsa fluorine ho PTFE, e leng se bakang karabelo ea dehydrofluorination. Lihlopha tsa -CF₂- tse ka har'a ketane ea limolek'hule li senyehile, li etsa li-bond tsa carbon-carbon habeli (-C = C-) 'me ka mor'a moo li lebisa ho carbonization.

- Ponahatso ea Macroscopic: Letlalo le fetoha ho tloha ho bosoeu ba lebese / ho fetella ho ea ho sootho kapa botsho, bo lahleheloa ke ho tenyetseha, bo brittle, 'me phofo. Ena ke tšenyo e tloaelehileng ea lik'hemik'hale.

 

2. Matla a Fluorinating Agents le Li-Halogenated Hydrocarbons tse itseng (tlas'a mocheso o phahameng le khatello)

 

- Elemental fluorine (F₂), chlorine trifluoride (ClF₃), le li-agents tse tšoanang li ka senya mokokotlo oa carbon-carbon, ho etsa hore seaparo se bole.

- Tlas'a mocheso o phahameng le khatello, li-solvents tse ling tsa mofuta oa Freon li ka baka ho ruruha ho matla ha PTFE. Le hoja karabelo ea lik'hemik'hale e ka 'na ea se ke ea etsahala, sebopeho sa' mele se na le bothata bo fokolang ba kristalline, ho atolosoa ha molumo, le ho lahleheloa ke matla ka lebaka la liketane tsa limolek'hule tse qobelloang ho arohana.

 

3. Matla a Oxidizing Acids ka Mocheso o Phahameng

 

- Ho qoelisoa ka nako e telele ho fuming nitric acid kapa hot concentrated sulfuric acid ho ka etsa oxidize butle-butle holim'a PTFE, ho hlahisa lihlopha tsa polar tse kang carbonyl le hydroxyl lihlopha, le ho eketsa matla a holim'a metsi. Leha ho le joalo, sena se bonoa ka seoelo lits'ebetsong tse tloaelehileng.

 

Ntlha ea Bohlokoa: Bakeng sa boholo ba mecha ea litaba ea lik'hemik'hale, PTFE e roala ka boeona 'ha e fetohe.' Leha ho le joalo, bothata bo atisa ho ba 'nete ea hore ha e khonehe ka ho feletseng, hammoho le morphology ea eona ea 'mele.

 

II. Liphetoho ho Lesela la Base la Fiberglass: Khokahanyo e Fokolang ea Boitsebiso Bohle

 

Likarolo tsa mantlha tsa fiberglass ke silicon dioxide (SiO₂) le li-oxide tse ling tsa tšepe. Hang ha karolo ena e senyehile, sebopeho se akaretsang sa lesela la mocheso o phahameng se tla oa.

 

1. Tlhaselo e Bolaeang ea Hydrofluoric Acid (HF)

 

- Liphetoho tsa Sebopeho: HF e ba le maikutlo a itseng ka SiO₂: SiO₂ + 4HF → SiF₄↑ + 2H₂O. Marapo a fiberglass a qhibiliha ka ho toba 'me a nyamela.

- Ponahatso ea Macroscopic: Bokaholimo ba lesela bo felloa ke matla ka potlako, bo ba joalo ka letlalo le bonolo le setseng feela, le taboha habonolo ha le hula, ka karohano e kholo lipakeng tsa koae le substrate. Ena ke corrosion e tšabehang ka ho fetesisa ea lik'hemik'hale bakeng sa lisebelisoa tse entsoeng ka khalase ea fiber. Hafeela ho ntse ho e-na le likoti holim'a ho roala kapa mahlakoreng a pepeneneng, tšenyo e senya.

 

2. Ho Eketsa butle ka li-alkali tse matla (haholo-holo li-alkali tse teteaneng tse chesang)

 

- Liphetoho tsa Sebopeho: Li-ion tsa OH⁻ li senya li-bond tsa siloxane (-Si-O-Si-) ka marang-rang a khalase, ho etsa li-silicate tse qhibilihang. Bokaholimo ba fiber bo fetoha ho tloha ho boreleli ho isa ho bo mahoashe, 'me ho hlaha mekoti e emeng le mapetsong, bophara ba fiber boa fokotseha, 'me qetellong boa robeha.

- Ponahatso ea Macroscopic: Matla a tsoela pele ho fokotseha, lesela le fetoha le brittle, 'me ha le kobeha, likhoele tse robehileng li hlahella ka har'a seaparo, e leng se etsang hore lesela le qhekelle le ho putlama.

 

3. Acidic Media (ntle le hydrofluoric acid)

 

- Liphetoho tsa Sebopeho: Li-acid tse tloaelehileng (hydrochloric acid, sulfuric acid, joalo-joalo) li khetha ka ho khetheha likarolo tse seng tsa silika (tse kang aluminium, calcium oxides, joalo-joalo) ho tloha fiberglass, e siea boholo ba silika skeleton. Ts'ebetso ena hangata e tsejoa e le 'leaching,' e etsa sebopeho sa microporous holim'a fiber.

- Ponahatso ea Macroscopic: Lesela le ba thata le ho feta, le fetoha le ho fokotseha, le hoja sebopeho sa kakaretso se ka bolokoa. Matla a fokotseha ka lebaka la khatello ea maikutlo.

 

III. Liphetoho ho Interface e Kopanetsoeng: Ho hloleha ho Patiloeng

 

Hangata tikoloho ea lik'hemik'hale ha e hlasele ka hlooho empa ho e-na le hoo e phunyeletsa ho tloha ka mathōko kapa ka li-micro-defects.

 

- Ho kenella le ho Delamination: Litharollo tsa 'mele kapa litharollo tsa asiti li kenella ka masoba, mapetsong a manyane, kapa li sehiloeng ka har'a koae ea PTFE, li hlasela fiberglass. Lihlahisoa tsa tšubuhlellano kapa maro a phunyeletsang a bokellana ho interface, a hlahisa khatello ea osmotic, e leng se etsang hore PTFE e be mablister le ho senyeha ho tloha karolong e ka tlaase ea fiberglass ka tekanyo e kholo.

- Stress Corrosion Cracking: Lesela la mocheso o phahameng le tlas'a tsitsipano nakong ea tšebeliso. Ho bola ha fiberglass ke mecha ea litaba ea lik'hemik'hale (haholo-holo li-alkalis tse matla) ho sebetsa ka mokhoa o ts'oanang le khatello ea kelello ea mochine, ho etsa hore mapetsong a ata ka potlako ho latela tataiso ea fiber radial, e leng se lebisang ho robeheng ha lesela ka tšohanyetso ka morpholoji e hloekileng ea brittle-fracture nakong ea khefu.

 

Libakeng tse senyang lik'hemik'hale, liphetoho tsa sebopeho sa lesela la fiberglass le koahetsoeng ke PTFE li ka akaretsoa e le: 'King of Plastics' ho roala ho ntse ho batla ho tsitsitse joaloka thaba, ha lesela la fiberglass-hang ha le kene kapa le hlaseloa-e fetoha serethe sa Achilles, se lebisang ho skeleton dissolution, delaps ho tloha ka hare ho motsoako oohle.

 

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Lintlha tse ka holimo li fanoe ke Jiangsu Aoke New Material Technology Co., Ltd.

 

Haeba u ka rata ho ithuta haholoanyane ka lintlha tse qaqileng, maemo a ts'ebeliso, le likhetho tsa ho itlhophisa bakeng sa lihlahisoa tsa rona tse felletseng-ho kenyeletsoa lesela la PTFE-coated fiberglass, tepi ea fiberglass e koahetsoeng ke PTFE, mabanta a mesh ea PTFE, mabanta a seamless a khomaretsoeng, lesela le nang le lehlakore le le leng la PTFE le boemo bo phahameng ba mocheso, manganga fiberglass lesela-ka kopo ikutloe u lokolohile ho ikopanya le rona:

 

Mohala:  

Mong. Guo: 18944819998  

Mong. Liu: 13705266308  

 

Re lula re ts'ehetsa filosofi ea ts'ebeletso e tsamaellanang le bots'epehi, 'me re ikemiselitse ho u fa litharollo tsa sebaka se le seng le ts'ebeletso e hlokolosi!