Imaphi Amakhemikhali Angagqwala Indwangu Ye-PTFE Esezingeni Eliphezulu?

I-PTFE idume ngokungangeni kwayo kwamakhemikhali – evame ukubizwa ngokuthi 'King of Plastics.' Imelana cishe nawo wonke ama-acids, ama-alkali, nezincibilikisi ekamelweni lokushisa. Nokho, 'cishe konke' akukona 'konke.' Ngaphansi kwezimo ezimbi kakhulu - izinga lokushisa eliphezulu, ukugxila okuphezulu, noma esimweni sokuncibilika - amakhemikhali athile angahlasela i-PTFE. Futhi noma i-PTFE ngokwayo isinda, i-fiberglass substrate engaphansi ingase ibe sengcupheni uma ukunamathela kunokukhubazeka.

Ukuqonda le mikhawulo kubalulekile ekukhetheni indwangu ye-PTFE ezindaweni zamakhemikhali ezinokhahlo.

I-Aokai PTFE ihlole izindwangu eziboshwe nge-PTFE ngokumelene namakhemikhali anolaka. Lo mhlahlandlela uchaza ukuthi yini ekonakalisa i-PTFE ngokuqondile, yini ehlasela i-fiberglass substrate, nokuthi ungakugwema kanjani ukwehluleka.

Ukugqwala Kwenzeka Kanjani - Izindlela Ezimbili

Indwangu ye-PTFE enezinga eliphezulu lokushisa inezingxenye ezimbili: i- PTFE enamathelayo (ezacile, engelona induku, inert yamakhemikhali) kanye ne -fiberglass substrate (inikeza amandla kodwa isengozini kumakhemikhali athile). Ukugqwala kwenzeka ngezindlela ezimbili:

1. Ukuguguleka okuqondile koqweqwe lwe-PTFE

Lokhu kwenzeka kuphela ngaphansi kwezimo ezimbi kakhulu - izinga lokushisa eliphezulu, ukugxila okuphezulu, noma esimweni esincibilikisiwe. Ezingeni lokushisa legumbi, i-PTFE ivikelekile ekuhlaselweni ngamakhemikhali.

2. Ukugqwala kwe-fiberglass substrate ngokulimala kokumboza

Amakhemikhali angena emigodini, imihuzuko, noma imifantu emincane embotsheni ye-PTFE futhi ahlasele imicu yengilazi. I-PTFE ngokwayo ingase ibukeke ilungile, kodwa indwangu ilahlekelwa amandla okusebenza futhi ingadabula kalula. Lena imodi yokwehluleka okuvamile lapho ukugqoka konakalisiwe.

Amakhemikhali Ahlasela Ngokuqondile I-PTFE Coating

Lezi zinto zisabela nge-PTFE ngokwayo, kodwa ngaphansi kwezimo ezimbi kakhulu.

1. Izinsimbi ze-alkali ezincibilikisiwe - ezijwayelekile kakhulu

I-sodium encibilikisiwe (Na), i-potassium (K), ne-lithium (Li) ihlubula ama-athomu e-fluorine kusukela ku-PTFE, okubangela ukubola kwe-carbonization, ukuguquguquka okumnyama, kanye nokuba yimpushana kwendawo ebonakalayo. Isixazululo se-sodium-naphthalene esisetshenziselwa ukufakwa kwe-PTFE sisebenza kulo mgomo.

• Umphumela: Ukubhujiswa okuphelele kwesakhiwo se-PTFE.

• Izimo: Noma yikuphi ukuchayeka ezinsimbini ze-alkali ezincibilikisiwe (ngaphezu kwamaphuzu azo ancibilikayo, isb, Na at 98°C).

• Isincomo: Gwema ngokuphelele. Sebenzisa ifilimu ye-PTFE emsulwa kuphela uma kunesidingo, futhi noma kunjalo ngokuqapha.

2. Ama-fluorinating agents anamandla emazingeni okushisa aphezulu

Lezi zinto zingaqhubeka nokubola i-PTFE ngaphansi kokushisa okuphezulu:

• Igesi ye-fluorine (F₂): Ibangela ukugqwala kancane kancane kumazinga okushisa aphezulu kanye nokucindezela.

• I-Interhalogen fluorides: Amakhemikhali asebenza kakhulu njenge-chlorine trifluoride (ClF₃) ne-bromine pentafluoride (BrF₅) angase aqalise ukusabela okunamandla noma ngisho nokusha kwe-PTFE emazingeni okushisa aphezulu.

• Ama-fluoride ane-oxidizing enamandla: Isibonelo, i-xenon difluoride (XeF₂).

Isincomo: Gcina indwangu ye-PTFE ikude nalawa makhemikhali, ikakhulukazi emazingeni okushisa aphakeme.

3. Ama-alkali anamandla ancibilikisiwe emazingeni okushisa aphezulu

I-Molten sodium hydroxide (NaOH) ne-potassium hydroxide (KOH) zonakalisa kancane indawo ye-PTFE ngaphezu kuka-300°C, okuholela ekulahlekelweni kwe-hydrophobicity kanye nesicwebezelisi sendawo. Ngaphansi kuka-300°C, i-PTFE imelana kahle nama-alkali. Ezingeni lokushisa legumbi, akukho mphumela.

4. Izimpushana zensimbi ezisebenzayo emazingeni okushisa aphezulu

I-Magnesium powder (Mg), i-aluminium powder (Al), nezinto ezifanayo zisabela ngobudlova nge-PTFE emazingeni okushisa aphezulu, zikhiqiza i-fluoride yensimbi ne-carbon. Lesi isisekelo samanye amaculo we-pyrotechnic kanye ne-incendiary aqukethe i-PTFE.

Amakhemikhali Ahlasela I-Fiberglass Substrate Ngokusebenzisa Ukukhubazeka Kokumboza

Lawa makhemikhali awasebenzi nge-PTFE, kodwa uma i-PTFE inanoma iyiphi imbobo, ukuklwejwa, noma ukuchayeka emaphethelweni, azongena futhi acekele phansi i-fiberglass.

1. I-Hydrofluoric acid (HF) - eyingozi kakhulu

I-Hydrofluoric acid ilimaza kakhulu i-fiberglass. Isabela ngokushesha nge-silicon dioxide (ingxenye eyinhloko yengilazi) yakhe igesi ye-silicon tetrafluoride, incibilikisa imicu yengilazi.

• I-PTFE ngokwayo imelana ne-HF ngokuphelele - i-PTFE ivamise ukusetshenziselwa imishini yokuphatha ye-HF.

• Nokho, indwangu eboshwe nge-PTFE AYIphephile ku-HF ngaphandle uma ukunamathela kungenayo imbobo ngokuphelele (okunzima kakhulu ukuyiqinisekisa). Noma yikuphi ukukhubazeka kuzovumela i-HF ukuthi ingene ku-fiberglass, okubangela ukwehluleka kwendwangu ngokushesha.

• Okutuswayo: Ngesevisi ye-HF, sebenzisa ifilimu ye-PTFE emsulwa (ayikho i-fiberglass reinforcement) noma ilina ye-PTFE evalwe ngokugcwele enamaphinikhodi anguziro aqinisekisiwe.

2. Ama-alkali agxilile emazingeni okushisa aphezulu

Isixazululo se-sodium hydroxide (NaOH) esigxiliswe kakhulu ekushiseni okuphezulu singaguguleka i-fiberglass ngokusebenzisa ukungapheleli kokumboza. Izinga lokushisa legumbi, ama-alkali acwebileyo aphephile.

3. I-phosphoric acid egxilile emazingeni okushisa aphezulu

Ukuxhumana isikhathi eside ne-hot concentrated phosphoric acid kuzodala ukugqwala ku-fiberglass. Futhi, i-PTFE ngokwayo iyamelana nayo, kodwa ukukhubazeka kokunamathela kuyiphuzu elibuthakathaka.

Izikhumbuzi Ezibalulekile Zesevisi Yamakhemikhali

1. Ukwehluleka okuningi kubangelwa ukuguga kwemishini noma ukuguga okushisayo, hhayi ukuhlaselwa ngamakhemikhali

Ezisetshenziswa ezivamile zezimboni (izitshalo zamakhemikhali, ukucubungula ukudla, njll.), indwangu ye-PTFE iyehluleka ngenxa yokuhuzuka, ukudabuka, noma ukuwohloka kokushisa kudala ngaphambi kokuba ukugqwala kwamakhemikhali kube yinkinga. I-inertness yamakhemikhali ye-PTFE iyiqiniso futhi ithembekile cishe kuwo wonke amakhemikhali avamile afika ku-260°C.

2. Uma kufanele uphathe amakhemikhali anolaka, sebenzisa ifilimu ye-PTFE emsulwa

Kuzinhlelo zokusebenza ezibandakanya izinsimbi ze-alkali ezincibilikisiwe, i-HF egxiliswe kakhulu, noma ama-ejenti e-fluorinating aqinile, ingilazi ye-fiberglass ene-PTFE ayinconywa . Kunalokho, sebenzisa:

• Ifilimu ye-PTFE ehlanzekile (i-skived noma i-cast) ngaphandle kokuqiniswa kwe-fiberglass

• yensimbi ene-PTFE Imishini

• I-PFA noma i-FEP (amanye ama-fluoropolymers anokumelana okufanayo kodwa izakhiwo ezihlukile zemishini)

3. Hlola njalo ngaphambi kokusebenzisa isilinganiso esigcwele

Uma isicelo sakho sibandakanya amakhemikhali angekho ohlwini 'kuphephile' kumashadi avamile ahambisanayo, yenza ukuhlola kokuhambisana kwezinto ngaphansi kwezimo zangempela zokusebenza (izinga lokushisa, ukugxilisa ingqondo, ubude besikhathi). I-Aokai PTFE inganikeza amasampula okuhlola ukuze aqinisekiswe.

Isifinyezo - Inkomba Esheshayo Yokuhambisana Kwamakhemikhali

I-Aokai PTFE inikeza isiqondiso sokuhambisana kwamakhemikhali futhi ingancoma umkhiqizo olungile – Indwangu eboshwe nge-PTFE yezinhlelo zokusebenza eziningi, noma ifilimu ye-PTFE emsulwa yesevisi yamakhemikhali eyeqisayo. Xhumana nathi ngamakhemikhali akho athile, izinga lokushisa, nesikhathi sokuchayeka.

Okuqukethwe okungenhla kunikezwa ngu I-Jiangsu Aokai New Materials Technology Co., Ltd.

Uma ufuna ukufunda okwengeziwe mayelana nokucaciswa okuningiliziwe, izimo zohlelo lokusebenza nezixazululo ezenziwe ngokwezifiso zohlu oluphelele lomkhiqizo wethu, okuhlanganisa izindwangu ze-PTFE ezishisa kakhulu, amateyipu we-PTFE, amabhande anezikhala we-PTFE, amabhande omshini wokubopha angenamthungo, indwangu ye-PTFE enohlangothi olulodwa, amabhande angamelana nokushisa okuphezulu, namabhande avikela ingilazi aphezulu

• UMnu. Guo: +86 18944819998

• UMnu. Liu: +86 13705266308

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