Yini Ebangela Ukuqhekeka Kwinqubo Ye-PTFE Impregnation?

Njengomkhiqizi womthombo ochwepheshile wezindwangu ze-PTFE ezishisa kakhulu, i-Jiangsu Aokai New Materials izochaza izimbangela zokuqhekeka kwendwangu ye-fiber yengilazi ngemva kokufakwa nge-PTFE (polytetrafluoroethylene) emulsion. Lena inkinga evamile yenqubo ekukhiqizweni kwezinto eziyinhlanganisela, evame ukwenzeka ngesikhathi somiswa (ukususwa komswakama nama-surfactants) noma ukushisa okushisayo okushisayo (ukuncibilikisa izinhlayiya ze-PTFE zibe ifilimu eqhubekayo).

1. Ukungafani Okukhulu Kwe-Thermal Expansion Coefficients

Lokhu kuyimbangela eyisisekelo yomzimba.

Kunomehluko omkhulu kuma-coefficients okunweba okushisayo phakathi kwefayibha yengilazi ne-PTFE:i-coefficient yomugqa yokunweba ye-glass fibre cishe icishe ibe ngu- 5×10⁻⁶/℃ , kuyilapho leyo ye-PTFE icishe ibe ngu- 100×10⁻⁶/℃ ukuya ku-200×10⁻⁶ izikhathi  zengilazi/⁻⁶ cishe/⁻⁶ izikhathi ezingu-2).

Ngesikhathi sokupholisa (kusuka kumazinga okushisa ashisayo acishe abe ngu-380℃–400℃ phansi kuya kuzinga lokushisa legumbi), i-PTFE incipha kakhulu kakhulu kunohlaka lwefayibha yengilazi. Njengoba indwangu yengilazi yefayibha isebenza njengohlaka lwamathambo oluqinile, i-PTFE ibambezeleka ngesikhathi ishwabana, ikhiqize ukucindezeleka okukhulu kwangaphakathi okushisayo okushisayo. Uma lokhu kucindezeleka kudlula amandla aqinile efilimu ye-PTFE noma amandla okuhlanganisa ubuso phakathi kwe-PTFE ne-glass fiber, ukuqhekeka kwenzeka ukuze kukhululwe ingcindezi.

2. Ukulawulwa Okungalungile Kwezinqubo Zokomisa Nezokushisa

Amapharamitha okushisa ezinto ezifakiwe athinta ngqo ukuqhekeka:

·  Izinga lokushisisa elishesha kakhulu : Ikakhulukazi cishe ku-100℃ (ukuhwamuka okusheshayo komswakama) kanye no-200℃–250℃ (ukubola kwama-surfactants ku-emulsion kanye ne-crystalline transition zone ngaphambi kwe-PTFE sintering). Ukushisisa okusheshayo kubangela ingcindezi yangaphakathi kanye nomthelela wegesi kusuka ekushibilikeni okusheshayo kwezinyibilikisi nezithasiselo, okuholela ekuqhekekeni kokumboza.

·  Izinga lokupholisa elishesha kakhulu : Ukuchayeka okuqondile emoyeni okuzungezile ukuze kuphole ngokushesha ngemva kokupholisa kudala ingcindezi yokuncipha ngokushesha ngenxa yokuhluka okukhulu kwezinga lokushisa, okwenza kalula ukuqhekeka okuhle kwenethiwekhi.

·  Izinga lokushisa le-sintering eliphezulu kakhulu noma isikhathi eside kakhulu se-sintering : Lokhu kubangela ukuwohloka kwesisindo samangqamuzana e-PTFE kanye noketshezi okweqile, okwenza okubalulekile kube lula ukuqhekeka ngaphansi kwengcindezi.

3. Izinkinga ku-Impregnation Process kanye ne-Emulsion Concentration

Ukujiya, ukufana nokujula kokungena kwesendlalelo esifakiwe kuthinta ngqo ukuzwela kokuqhekeka:

·  Ungqimba oluminyene olugqinsile kakhulu : Ekuphishekeleni ukujiya noma ukusebenza kahle kokukhiqiza, i-PTFE enamathelayo isetshenziswa endaweni eyodwa. Ngesikhathi somiswe futhi sicwiliswa, ukunamathela okuqinile kunendlela ende yokukhipha i-solvent futhi iyancipha ivolumu enkulu (i-PTFE emulsion ngokuvamile inokuqukethwe okuqinile okungaba ngu-60%, okusho ukuthi cishe umswakama ongu-40% kufanele ususwe), okuvame ukubangela ukuqhekeka kwendawo.

·  Ukukhulelwa okungalingani : Ukwakheka okweqile kwe-PTFE okwenziwe kwasendaweni noma ukusatshalaliswa kwe-emulsion okungalingani endaweni yendwangu kuholela ekuncipheni okugxilile.

·  Ukungena kwe-emulsion okunganele : Uma indwangu ye-fiber yengilazi ingakhishwanga ngewax noma iphathwe kabi ebusweni, i-emulsion ye-PTFE yehluleka ukungena ngokugcwele kunqwaba yefiber futhi yakha kuphela 'ifilimu yesikhumba'. Le filimu ine-anchoring ebuthakathaka ne-substrate futhi ijwayele ukuhlehla noma ukuqhekeka lapho ishiswa.

4. Izinto Ezihlobene Ne-substrate

·  Indwangu ye-fiber yengilazi engafakwanga wax : Indwangu ye-fiber yengilazi iqukethe izinto zokulinganisa (upharafini, i-epoxy, njll.) kusukela kunqubo yokuluka. Ngaphandle kwe-dewaxing ephezulu yokushisa noma ukuhlanzwa kwamakhemikhali ngaphambi kokukhulelwa, lezi zinto eziphilayo zi-carbonize futhi ziguquke ngesikhathi sokucwiliswa okulandelayo, ezikhiqiza igesi edabula i-coating noma eyenza buthaka ukubopha phakathi kwe-PTFE ne-glass fiber, okuholela ekuqhekekeni.

·  Ukwakheka nokujiya kwendwangu yengilazi yefayibha : Indwangu yengilazi yengilazi ewugqinsi futhi eminyene (njengendwangu ye-satin ewugqinsi) ibonisa ukuqina okuphezulu kanye nokuvimbela okuqinile ekushwabaneni kwe-PTFE. Ngaleso sikhathi, ama-grooves ajulile phakathi kwama-fiber bundles avame ukudala ukugxila kwengcindezi kanye nokuqhekeka emaphethelweni e-groove ngesikhathi somiswa.

Ulwazi olungenhla lunikezwe i- Jiangsu Aokai New Materials Technology Co., Ltd.

Ukuze uthole imingcele enemininingwane, izimo zohlelo lokusebenza nezixazululo ezenziwe ngokwezifiso zohlu oluphelele lomkhiqizo wethu - kufaka phakathi indwangu ye-PTFE yokushisa ephezulu, i-PTFE itheyiphu yokushisa ephezulu, ibhande le-PTFE elinezinga eliphezulu lokushisa, amabhande angenamthungo emishini yokubopha, indwangu ye-PTFE enohlangothi olulodwa, indwangu engavimbeli izinga lokushisa eliphezulu kanye neminye imikhiqizo ehlobene nengilazi evikelayo - sicela uzizwele ukuxhumana nathi:

·  Inombolo Yezinkonzo: Mnu. I-Guo: +86 18944819998 Mnu. Liu: +86 13705266308

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