Ezimbonini ezilungisa ukudla, izimboni zemishini yezokwelapha, kanye nezindawo ezithile zezimboni, imisebe ye-gamma noma imishayo yama-electron isetshenziselwa ukuvala inzalo. Uma udinga ukusebenzisa Itheyiphu ye-PTFE enezinga eliphezulu lokushisa kulezi zindawo - noma okubi nakakhulu, endaweni yamandla enuzi - kufanele uqonde imikhawulo yayo yokumelana nemisebe.
Impendulo emfushane: I-PTFE isengozini enkulu emisebeni ye-ionizing. Isebenza kahle ekufakweni kwethamo eliphansi (njengokuvalwa inzalo ekudleni) kodwa yehluleka ngendlela eyingozi ngemithamo ephezulu.
I-Aokai PTFE ihlole amateyipu e-PTFE ngaphansi kwezimo ezihlukahlukene zemisebe. Lesi sihloko sichaza izindlela zokuwohloka, imikhawulo yomthamo, nalapho ungafanele neze usebenzise itheyipu ye-PTFE.
Iqiniso Eliyinhloko - I-PTFE Inokumelana Nemisebe Okubi
Ingxenye eyinhloko yetheyiphu ye -PTFE yokushisa okuphezulu yi-polytetrafluoroethylene (PTFE). Ngokungafani nokuzinza kwayo okuhle kakhulu kokushisayo namakhemikhali, i-PTFE isengozini enkulu emisebeni ye-ionizing njengemisebe ye-gamma nama-electron beams.
Kungani? Imisebe iphula amabhondi e-carbon-fluorine (CF) kanye nomgogodla we-polymer, okubangela ukugoba kweketango lamangqamuzana. Impahla iba brittle futhi ilahlekelwe amandla omshini.
Okushiwo okusebenzayo: Itheyiphu ye-PTFE ifaneleka kuphela endaweni enemithamo ephansi yemisebe. Ngokuvamile akuvunyelwe ezimeni zokukhanya okuphezulu njenge-nuclear reactor cores noma amalophu ayinhloko.
Lapho evezwa emisebeni, amaketanga e-molecular PTFE ayaphuka, okuholela ekwehleni okukhulu kwezakhiwo zemishini. Izinguquko ezithile ziboniswa ngezansi:
Umthamo Wemisebe |
Imvelo |
Umthelela ku-PTFE |
1 kGy (0.1 Mrad) |
Umoya |
Amandla aqinile ehla aze afike ku -25% yenani loqobo |
10 kg |
Umoya |
I-embrittlement ephawulekayo; ukuqhekeka komhlaba kuqala |
100 kGy |
Umoya |
Ukuwohloka okukhulu; itheyiphu ingase idilike lapho iphathwa |
1 MGy (1000 kGy) |
Umoya |
Ukulahlekelwa kwe-elongation kufika ku- 87% ; ukwehla kwamandla e-tensile 54% |
Idatha eyengeziwe:
Emkhathini ongenalutho (i-vacuum, i-nitrogen, noma i-deuterium), ukuwohloka kuhamba kancane kodwa kusengagwemeki.
Ukuhlangana kwe-thermal-radiation (izinga lokushisa eliphezulu + nemisebe) kusheshisa ukuguga ngokuqhubekayo.
I-Aokai PTFE yeluleka amakhasimende ukuthi itheyiphu yethu evamile ye-PTFE ikufanelekela ukuvala inzalo ekudleni (≤10 kGy) kanye nokuvala inzalo kwedivayisi yezokwelapha yomjikelezo owodwa (≤50 kGy). Ngemithamo enqwabelene engaphezu kuka-100 kGy noma imijikelezo yokuvala inzalo eminingi, sincoma ukuthi ushintshele kutheyiphu ye-polyimide.
Izimo Zemvelo Ezisheshisa Ukuwohloka
Isici |
Umthelela ku-PTFE Ngaphansi Kwemisebe |
I-atmosphere (i-oxygen) |
I-oksijeni isheshisa ukuwohloka - ama-radicals wamahhala asabela nge-O₂, okubangela ukugoba okwengeziwe |
Isimo esingenalutho (i-vacuum/N₂) |
Ukwehliswa kwesithunzi kunciphile kodwa kusabalulekile - akunakugwenywa ngokuphelele |
Izinga lokushisa eliphezulu |
Umphumela wokuhlanganisa we-thermal-radiation - ukuguga kuyashesha kakhulu |
Umswakama |
Umswakama ungase ukhuthaze i-surface hydrolysis, i-embrittlement ibe yimbi |
Isiqondiso esisebenzayo: Uma kufanele usebenzise itheyiphu ye-PTFE endaweni enemithamo esezingeni eliphansi enomoya okhona, yishintshe njalo. Ku-vacuum noma igesi ye-inert, ukuphila kuyanwetshwa kodwa akunamkhawulo.
Izimo Ezisebenzayo Nezexwayiso Ngobungozi
Izicelo Zokushiswa Kwemithamo Ephansi Enconyiwe (≤50 kGy)
Isicelo |
Umthamo Ojwayelekile |
PTFE Tape Ukufaneleka |
Ukuvalwa inzalo kokudla |
1-10 kGy |
✅ Kuhle - akukho ukuwohloka okubonakalayo |
Ukukhipha amagciwane endaweni yedivayisi yezokwelapha |
15-50 kGy (umjikelezo owodwa) |
✅ Iyamukeleka - ingase ibe brittle ngemva kwemijikelezo eminingi |
Imishini yokwenza imithi |
10-25 kGy |
✅ Kuyamukeleka - buyisela emuva komjikelezo ngamunye ukuze usetshenziswe ngokubalulekile |
Izindawo ezingezona ezibalulekile zezitshalo zenuzi (isb., ukulungiswa kokufakwa kwamapayipi) |
Umthamo ophansi, i-PTFE eguquliwe iyadingeka |
⚠️ Kuphela uma ilungiswe ngokukhethekile - i-PTFE evamile ayinconywa |
Izimo Zemisebe Ephakeme Okufanele Zigwenywe (>100 kGy)
Isicelo |
I-Cumulative Dose |
Kungani i-PTFE Yehluleka |
Enye indlela engcono |
Isizinda se-nuclear reactor |
> 1 MGy |
Izinto ziyawohloka |
I-Polyimide (Kapton) noma i-PEEK |
Izingxenye eziyinhloko ze-loop |
100 kGy – 1 MGy |
Ukucindezeleka okukhulu |
I-Polyimide / PEEK |
Ingaphandle lemikhumbi-mkhathi |
Imisebe yezinhlayiyana ezinamandla aphezulu |
Ayikwazi ukumelana nokuchayeka isikhathi eside |
I-Polyimide / PEEK |
Ukwenziwa inzalo kwe-gamma yedosi ephezulu (>100 kGy) |
>100kGy |
Ukuncipha kwamandla >80% |
I-Polyimide |
Isifinyezo - Yazi Umkhawulo
I-Radiation Dose Level |
PTFE Tape Ukusebenza |
Isincomo |
< 10 kGy (ukuvalwa inzalo kokudla) |
Akukho ukucekelwa phansi okubonakalayo; izakhiwo zemishini zigcinwe kakhulu |
✅ Iphephile ukusetshenziswa |
10 – 50 kGy (ukuvalwa inzalo ngokwezokwelapha) |
Ezinye embrittlement; amandla okubamba ancishisiwe ngo-30-50% |
⚠️ Sebenzisa kanye, bese ushintsha |
50 - 100 kGy |
I-embrittlement enzima; ukuqhekeka komhlaba |
❌ Akunconyiwe |
> 100 kGy |
Izinto ezibonakalayo ziyawohloka; ikhipha amagesi abolayo |
❌ Akuvunyelwe - sebenzisa i-polyimide noma i-PEEK |
Okuthathayo okubalulekile: Ukumelana nemisebe ebuthakathaka kuwumkhawulo omkhulu we -PTFE itheyiphu yezinga lokushisa eliphezulu . Ifaneleka kuphela ezindaweni ezinemithamo esezingeni eliphansi (ukudla nokuvala inzalo yezokwelapha). Iletha ukumelana nezinga lokushisa eliphezulu okuhle kakhulu kanye nokuzinza kwamakhemikhali kulezo zilungiselelo. Ezindaweni ezinemisebe ephezulu njengeziphehlisi ze-nuclear noma imikhumbi-mkhathi, kufanele kwamukelwe izinto ezichwepheshile ezimelana nemisebe.
Kafushane , itheyiphu ye-PTFE ayiyona into ekwazi ukumelana nemisebe. Ngo-1 kGy nje wokuchayeka ku-gamma, amandla ayo okuqina ehla aze afike ku-25% owangempela. Ifanele ukusetshenziswa kwethamo eliphansi kuphela njengokudla nokuvala inzalo yezokwelapha (≤50 kGy). Ngemithamo enqwabelanayo engaphezu kuka-100 kGy – njengama-nuclear reactor cores, amalophu ayinhloko, noma ingaphandle lendiza-mkhathi – i-PTFE ayivunyelwe.
Uma isicelo sakho sibandakanya imisebe, qala ngokuthola umthamo olindelekile oqongelelekayo. Ngaphansi kwe-10 kGy, itheyiphu ye-PTFE isebenza kahle. Phakathi kuka-10-50 kGy, sebenzisa kanye bese ubuyisela. Ngaphezu kuka-50 kGy, shintshela ku-polyimide noma i-PEEK.
Udinga usizo lokukhetha itheyiphu elungile yendawo yemisebe? I-Aokai PTFE inganikeza idatha yokuhlola eqondene nomthamo kanye nezinye izincomo. Xhumana nathi ngomthombo wakho wemisebe, umthamo olindelekile, kanye nemininingwane yesicelo.
Ulwazi olungenhla luhlinzekwa ngu I-Jiangsu Aokai New Materials Technology Co., Ltd.
Uma ufisa ukwazi kabanzi mayelana nemingcele enemininingwane, izimo zohlelo lokusebenza, nezixazululo ezenziwe ngokwezifiso zomugqa wethu womkhiqizo ogcwele, okuhlanganisa indwangu ye-PTFE yokushisa okuphezulu, i-PTFE high-temperature tape, ibhande le-PTFE high-temperature mesh, ibhande lomshini wokuhlanganisa elingenamthungo, indwangu ye-PTFE enohlangothi olulodwa, ibhande lengilazi eliqinile elikwazi ukumelana nokushisa okuphezulu , sicela umelane nengilazi ephezulu. khulula ukuxhumana nathi:
Sibambelela kufilosofi yobungcweti nobuqotho, futhi sizibophezele ekukunikezeni izisombululo eziphuma endaweni eyodwa kanye nezinsizakalo ezicatshangelwayo.
