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 enezinga eliphezulu lokushisa.
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 ezindaweni ezimaphakathi zenucleation. 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), elifana 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 ukucwebezela okuphezulu, 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 endaweni ye-fiberglass, amasayithi aminyene e-nucleation endaweni yefayibha abangela ukuguqulwa kwekristalu: ungqimba lwekristalu lwekholomu lukhula luqonde ku-axis ye-fiber, ehluke ngokusobala ku-spherulite morphology ngaphakathi kwe-coating yenqwaba.
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 ezi-transcrystalline ezihlangene ebusweni). Lokhu kuguqula izinhlayiya zempushana ezigcwele ezixegayo zibe ifilimu eqhubekayo, okuyisidingo esibalulekile ukuze imbobo ilethe ukusebenza okuphelele okuhlanganisa ukumelana nokushisa, ukungqubuzana okuphansi, impahla 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 ephezulu lokushisa, i-PTFE high-temperature adhesive tape, PTFE high-temperature mesh belt, ibhande lokucindezela ukushisa elingenamthungo, indwangu ye-PTFE enohlangothi olulodwa, ulwazi oluthe xaxa lokushisa ngezansi kanye nengilazi ekwazi ukumelana nokushisa sicela usithinte:
· Inombolo Yocingo Yesevisi: Mnu. Guo +86 18944819998
· Inombolo Yezinkonzo: Mnu. Liu +86 13705266308
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