Ukumelana Nokuguga kwe-Ozone kwe-PTFE Indwangu Yokushisa Okuphezulu

I-Jiangsu Aokai New Materials, umkhiqizi ochwepheshe kanye nefekthri engumthombo wendwangu ye-PTFE eshisa kakhulu, ikunikeza isingeniso esinemininingwane. Indwangu ye-fiberglass ene-Polytetrafluoroethylene (PTFE) ifaka ukungangeni kahle kwamakhemikhali futhi ngokuvamile iletha ukumelana nokuguga okuvelele kwe-ozone. Kodwa-ke, ayivikelekile ngokuphelele ekugugulekeni kwe-ozone, futhi ukusebenza kwayo jikelele kuthinteka kakhulu ekugxilweni kwe-ozone, izinga lokushisa elizungezile, isikhathi sokuchayeka okuqhubekayo nezinye izici zangaphandle.

Ngenxa yesakhiwo sayo esiyingqayizivele samangqamuzana, i-PTFE ikhombisa ukumelana ne-ozone okuqinile ngaphansi kwezimo ezijwayelekile. Ibhondi ye-carbon-fluorine (CF) ene-fluorinated ngokugcwele inamandla ebhondi aphezulu kakhulu acishe abe ngu-485 kJ/mol. Ngaleso sikhathi, ukwakheka kwayo kwamangqamuzana okuvunguza kwakha isivikelo esiminyene sama-athomu e-fluorine, esivimbela ama-oxidants aqinile njenge-ozone ekuhlaseleni iketango eliyinhloko le-carbon-carbon (CC).

Noma kunjalo, i-ozone ingashintsha kakhulu izici ezingaphezulu ze-PTFE futhi iqalise uchungechunge lwezinguquko zamakhemikhali nezomzimba. Ucwaningo luye lwabonisa ukuthi i-PTFE evezwe ku-ozone ine-coefficient yokungqubuzana cishe ngokuphindwe kathathu kunaleyo esendaweni evamile yomoya, ehambisana nezimpawu zokugqoka ezisobala. Lokhu kubangelwa ikakhulukazi ukugcotshwa kwe-ozone ebusweni, ukuphuka kwebhondi yamangqamuzana kanye nokuthambisa impahla.

Ngokuchayeka isikhathi eside ku-ozone, ikakhulukazi ngaphansi kwezimo ezinzima zokusebenza ezifana nezinga lokushisa eliphezulu kanye nokugxilwa kwe-ozone ephezulu, indwangu ye-PTFE enezinga eliphezulu lokushisa izokhula kancane kancane isuka emonakalweni we-microscopic iye ekuhlulekeni kokusebenza kwe-macroscopic, nokubonakaliswa kokwehluleka okukhethekile ngale ndlela elandelayo:

Ukuphuka nokonakala kweketango lamangqamuzana I-ozone iphula amaketanga e-CC yamangqamuzana e-PTFE futhi ikhiqize izingcezu zamangqamuzana amancane njenge-carbon tetrafluoride (CF₄) ne-carbonyl fluoride (COF₂). Lokhu kuholela ekwehleni kwesisindo samangqamuzana kanye nokuwohloka kokusebenza okuyisisekelo kwezinto.

Ukuqhekeka komhlaba kanye ne-embrittlement Kuyinto enembile kakhulu yokuguga. Impahla ilahlekelwa ukuguquguquka kwendawo futhi ikhiqize imifantu ekhanyayo efana nenethiwekhi ngaphansi kwengcindezi, okuwukuthi ukuqhekeka kwe-ozone. Indwangu iba lukhuni futhi ibe brittle, futhi ukuguga okukhulu kuzophinde kubangele ukubola kanye nokulimala kwesakhiwo.

Ukwehla kwezakhiwo zemishini Ukuwohloka kwempahla kunciphisa ngokuqhubekayo amandla aqinile, ubude ngesikhathi sekhefu, ukunwebeka kanye nezinye izinkomba zemishini eziwumongo. Okulandelayo ukugobhoza kwendawo, ukuxebuka kanye nokunciphisa ukujiya kuzothuthukisa ukumelana nokuguga kanye nokuzinza kwesakhiwo.

Ukuwohloka kwezakhiwo ezingaphezulu Ukulimala kwesakhiwo samakhemikhali kushintsha amapharamitha abalulekile njengamandla angaphezulu kanye ne-engeli yokumanzisa. Imifantu emincane kanye nezimbotshana ezakhiwe ukuguguleka kwe-ozone zizokhula ngosayizi, zenze buthaka kakhulu ukuvala kwasekuqaleni nokusebenza kokuzihlukanisa.

Ukumelana ne-ozone kwendwangu ye-PTFE yokushisa okuphezulu akunqunywa kuphela yi-base material ngokwayo. Izinga lokushisa elizungezile, imiphumela yokuguga ehlangene nezinye izimo zangaphandle nazo zidlala indima ebalulekile empilweni yayo yesevisi.

Izinga lokushisa eliphakeme lisheshisa kakhulu ukucekelwa phansi kwe-ozone. Ngaphansi kwezimo zezinga lokushisa eliphezulu, i-oxidation eqinile ye-ozone iqinisa ukuwohloka kweketango lamangqamuzana e-PTFE. Ngakho-ke, umkhawulo wokushisa wesevisi yesikhathi eside wemikhiqizo ye-PTFE wehla kakhulu usuka ku-260℃ emoyeni ovamile uye ku-200℃–220℃ ku-ozone nasezindaweni eziqinile zegesi oxidizing.

Kunomphumela wokuguga we-synergistic  phakathi kwe-ozone nemisebe ye-ultraviolet. Ezimweni zangaphandle, inhlanganisela yemisebe ye-UV kanye ne-ozone ikhiqiza umphumela obhubhisayo okhulisiwe omkhulu kakhulu kunalowo wesici esisodwa.

Ngaphezu kwalokho, izinga lomkhiqizo liyahlukahluka kumkhiqizi. Umehluko ezinkambisweni zokukhiqiza, ukujiya koqweqwe lwawo kanye nokwakheka kwefomula (njengokwengezwa kweziqinisi ezilwa ne-oxidant) kuzoholela ezikhaleni ezisobala ekuphikisweni kwe-ozone isikhathi eside phakathi kwemikhiqizo yendwangu esezingeni eliphezulu ye-PTFE ehlukene.

Izindlela Eziphumelelayo Zokuthuthukisa Ukumelana Ne-Ozone Ukuguga

1. Engeza ama-antioxidants asebenza kahle kakhulu neziqinisi ukukhanya kufomula ye-PTFE ukuze uthwebule ama-radicals mahhala futhi ulibazise ukuwohloka kwe-oxidative.

2. Yamukela ukwelashwa kokuguqula indawo ngendlela oyifisayo ukuze kwakhe ungqimba oluvikelayo oluminyene futhi uthuthukise ukumelana nokuguguleka kwegesi ene-oxidizing.

3. Lungiselela izimo zokusebenza zangempela: lawula izinga lokushisa elingaphansi kuka-200 ℃, futhi ugweme isevisi yesikhathi eside ezindaweni ezine-ozone ephezulu yokugxila kanye nemisebe ye-ultraviolet enamandla.

Isifinyezo

Indwangu ye-PTFE enezinga eliphezulu lokushisa isebenza ngokuzinza nangokuncomekayo ekamelweni lokushisa kanye nokuhlushwa kwe-ozone ephansi. Kodwa-ke, ukuwohloka kwe-oxidative, ukuqhekeka kwendawo, ukugqwala kanye nokwehla kokusebenza okuphelele kuzokwenzeka endaweni enezinga lokushisa eliphezulu, i-ozone ephezulu noma ezindaweni ezinokhahlo ezihlanganiswe ne-UV. Ukulawulwa kwemvelo okunengqondo nokuguqulwa kwezinto kunganciphisa ngempumelelo ukuguga futhi kwandise kakhulu impilo yesevisi yesikhathi eside yomkhiqizo.

Okuqukethwe okungenhla kobuchwepheshe kunikezwa i- Jiangsu Aokai New Materials Technology Co., Ltd.

Uma udinga eminye imingcele yobuchwepheshe, izixazululo zohlelo lokusebenza kanye nezinsizakalo ezenziwe ngokwezifiso zemikhiqizo yethu egcwele uhla olugcwele, kufaka phakathi indwangu ye-PTFE ephezulu lokushisa, i-PTFE high-temperature adhesive tape, ibhande le-PTFE mesh conveyor, ibhande lomshini wokubopha elingenamthungo, indwangu ehlanganiswe ne-fluorine ehlangothini olulodwa, izinga lokushisa eliphezulu elimelana nokushisa okuphakeme kanye ne-fiber-temperature yamahhala, sicela uzizwe ukhululekile.

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