I-Jiangsu Aokai New Materials, umkhiqizi ochwepheshile wendwangu ye-PTFE eshisa kakhulu, uchaza kabanzi ngokuvela kwesakhiwo sekristalu se-PTFE kuyo yonke inqubo ye-sintering yendwangu ye-PTFE ephezulu.
I. Ukucekelwa phansi Kwesakhiwo Soqobo Sekristalu
1. PTFE crystalline morphology ngaphambi sintering
Ngaphambi kwe-sintering, i-PTFE ikhona njengezinhlayiya ze-emulsion ezihlakazekile ezixhunywe kwindwangu ye-fiberglass. Uhlamvu ngalunye luqukethe i-lamellae egoqiwe ecwebezelayo enamakristalu amancane, ahlelwe ngobunono.
Uma izinga lokushisa likhuphuka ngaphezu kwendawo yokuncibilika (~327°C), wonke amakristalu ancibilika ngokugcwele. Amaketanga amangqamuzana agoqiwe ayavuleka futhi ahlukanise, aguquke abe inyibiliki ye-amorphous. Imingcele yezinhlayiya zangempela iyanyamalala njengoba izinhlayiya zihlangana esigabeni esincibilikisiwe esiqhubekayo, zibhidliza ngokuphelele isakhiwo sokuqala sekristalu eyimbudumbudu.
II. Recrystallization Ngesikhathi Ukupholisa
Lapho ipholisa esimweni esincibilikisiwe, i-PTFE iphinda ikhanye ngokushesha ukuze yakhe ama-spherulites akhiwe ngama-lamellae ochungechunge olugoqiwe olunwebeka ngaphandle olusuka kumasayithi amaphakathi enucleation. Lawa ma-spherulite angena ngaphakathi akha i-crystalline matrix eqhubekayo, ethatha indawo yesakhiwo sezinhlayiya ezigcwele.
2. Ukuhluka kobucwebe bokugcina
I-PTFE ifaka amaketanga emolekyuli aqinile, avamile, aletha amazinga okukhanya asheshayo ngisho nangaphansi kokupholisa okusheshayo. I-crystallinity yokugcina ngokuvamile isukela ku-50% iye ku-70%, iphansi kancane kunaleyo yezinhlayiya ze-emulsion zangempela.
1. Ukugcinwa kwesigaba sekristalu esizinzile
Ngemva kokupholisa ekamelweni lokushisa, i-PTFE igcina isistimu yekristalu ene-hexagonal ezinzile (isigaba segumbi-izinga le-hexagonal lokushisa), efana nefomu layo lekristalu langaphambi kwe-sintering. Zonke izinguquko zesakhiwo zenzeka ngosayizi wekristalu, ukuphelela kanye ne-morphology kunesigaba sekristalu sokugcina.
2. Umthelela wezinga lokupholisa ekupheleleni kwekristalu
· Ukupholisa kancane kuveza ubucwebe obuphakeme, ama-spherulite amakhulu kanye nama-lamellae aminyene, achazwe kahle, okuholela emikhiqizweni enobulukhuni obuphakeme nokuminyana.
· Ukucisha ngokushesha kuholela ekucwebezeleni okuphansi, ukucoleka, ama-spherulite angaphelele, kanye nokuguquguquka okuthuthukisiwe kanye nokungafihli lutho kwento eqediwe. Ukupholisa okunensayo kuwumgomo wendwangu ye-PTFE enezinga eliphezulu lokushisa ukuze kuhlangatshezwane nezidingo zamandla emishini.
IV. I-Interfacial Crystallization Effect ku-Fiberglass kanye Nokubaluleka Sekukonke
1. I-Transcrystallization phenomenon
Lapho i-PTFE incibilika iphola ezindaweni eziphakeme ze-fiberglass, amasayithi enucleation aminyene endaweni yefayibha abangela ukuguqulwa kwekristalu: ungqimba lwekristalu lwekholomu lukhula ngendlela eqondile ku-axis yefiber, ehluke ngokusobala ku-spherulite morphology ngaphakathi kwe-coating yobuningi.
2. Isakhiwo se-gradient kusuka kusixhumi esibonakalayo se-fiber kuya kunqwaba yokumboza
Ngaphansi kwethonya le-fiberglass, isakhiwo sekristalu se-PTFE sakha inguquko ye-gradient: isendlalelo se-transcrystalline esiseduze nemicu kancane sishintshela kuzakhiwo eziyi-spherulitic ku-matrix yokwemboza yangaphakathi.
I-Sintering iguqula amakristalu e-PTFE agoqiwe ayimbudumbudu: ayancibilika futhi ayawohloka, bese aphinde acwebe abe ama-spherulites aqhubekayo, aminyene (enezendlalelo ezishintshashintshayo zobuso). Lokhu kuguqula izinhlayiya zempushana ezigcwele ezixegayo zibe ifilimu eqhubekayo, okuyisidingo esibalulekile ukuze i-coating ilethe ukusebenza okuphelele okuhlanganisa ukumelana nokushisa, ukungqubuzana okuphansi, indawo engabambeki kanye nokumelana nokugqwala kwamakhemikhali.
Okuqukethwe okungenhla kwezobuchwepheshe kunikezwa ngu I-Jiangsu Aokai New Materials Technology Co., Ltd.
Uma ufisa ukuthola imininingwane eningiliziwe, izimo zohlelo lokusebenza nezixazululo ezenziwe ngokwezifiso zephothifoliyo yethu yomkhiqizo ogcwele ohlanganisa indwangu ye-PTFE yokushisa okuphezulu, i-PTFE high-temperature adhesive tape, PTFE high-temperature mesh belt, ibhande lokucindezela ukushisa elingenamthungo, indwangu ye-PTFE enohlangothi olulodwa, ulwazi oluthe xaxa lokushisa oluphezulu kanye nengilazi ekwazi ukumelana nokushisa sicela usithinte:
· Inombolo Yocingo Yesevisi: Mnu. Guo +86 18944819998
· Inombolo Yezinkonzo: Mnu. Liu +86 13705266308
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