Insay di plant dɛn we dɛn kin mek it, di faktri dɛn we dɛn kin mek mɛrɛsin, ɛn sɔm say dɛn we dɛn kin mek injɔstis, dɛn kin yuz gama rayt ɔ ilɛktron bim fɔ mek dɛn nɔ gɛt stɛrilayz. If yu nid fɔ yuz am PTFE ay-tɛmpracha tep na dɛn envayrɔmɛnt ya – ɔ di wɔs, na nyuklia pawa plant – yu fɔ ɔndastand in raytin rɛsistɛns limit.
di sכt ansa: PTFE na hεli susεptibl fכ ayonayz rεdyushכn. i de du fayn fayn wan pan lכw dכz aplikεshכn (lεk fכd stεrilayzεshכn) bכt i de fεl katastrofik wan pan hכy dכz.
Aokai PTFE dɔn tɛst PTFE tep dɛn ɔnda difrɛn raytin kɔndishɔn dɛn. Dis atikul de ɛksplen di we aw di tin kin pwɛl, di doz thrɛshɔld, ɛn usay yu nɔ fɔ ɛva yuz PTFE tep.
Kor Fakt – PTFE Gɛt Po Rɛdieshɔn Rɛsistɛns
di kor kכmכp כnt fכ PTFE hεy-tεmprach כ tεp na polytetrafluoroethylene (PTFE). difrεnt frכm in εksεlεnt tεmכl εn kεmikכl stεbiliti, PTFE de hεvi susεptibl fכ ayoniz rεdyushכn lεk gama rayt εn εlektrכn bim.
Wetin du? rεdyushכn de brok di kabכn-fכrin (CF) bכnd dεm εn di polimכr bakbon, we de mek mכlikul chen sεshכn. Di matirial kin brok ɛn i kin lɔs di mɛkanikal trɛnk.
Praktikal implεkshכn: PTFE tep na כnli fayn fכ envayroment wit lכw rεdyushכn dכz. I jɔs prohibit fɔ ay-rɛdyushɔn sɛnɛriɔ lɛk nyuklia riaktɔ kɔr ɔ praymari lɔp.
Pɔfɔmɛnshɔn Dɛgradɛshɔn Ɔnda Rɛdyeshɔn – Bay di Nɔmba dɛn
we dεn εkspos to rεdyushכn, PTFE mכlikul chen dεm de brok, we de rεsult in shap dכn pan mεkanikal prכpati dεm. Dɛn sho di patikyula chenj dɛn dɔŋ ya:
Radieshɔn Doz we dɛn kin yuz
Ples
Efεkt pan PTFE
1 kGy (0,1 Mrad) .
Briz
Tensile strכng dכp to ~25% כf כrijinal valyu
10 kGy
Briz
Impɔtant embrittlement; di surface krak krak bigin
100 kGy na di 100 kGy
Briz
Di bad bad tin dɛn we kin pwɛl; tep kin krɔs we dɛn de ol am
Insay inɛt atmosfɛs (vaykum, naytrɔjen, ɔ diutirium), di pwɛl pwɛl kin slo bɔt stil nɔ kin avɔyd.
Tεmכl-rεdyushכn kכplεshכn (hεy tεmprachכ + rεdyushכn) de aksεlεrayt εj mכr.
Aokai PTFE advays kɔstɔma dɛn se wi standad PTFE tep kwalifay fɔ it sterilayzeshɔn (≤10 kGy) ɛn singl-saykl mɛdikal divays sterilayzeshɔn (≤50 kGy). fכ kumulativ dכz dεm we pas 100 kGy כ mכltipכl stεrilayzεshכn saykl dεm, wi rεkomεnd fכ swich to polyimide tep.
Di Tin dɛn we De Insay di Envayrɔmɛnt we De mek di ples pwɛl kwik kwik wan
Tin
Efεkt pan PTFE כnda Rεdyushכn
Atmosfɛre (ɔksijɛn) .
כksijεn de aksεlεrayt dεgradashכn – fri radikal dεm de riak wit O2, we de mek mכr chen scission
Inɛt atmosfɛs (vaykum/N2) .
Di pwɛl pwɛl de ridyus bɔt stil impɔtant – dɛn nɔ kin ebul fɔ avɔyd am ɔl
Ay tɛmpracha
Tεmכl-rεdyushכn kכplεshכn ifekt – εj de aksεlεrayt bכku bכku wan
Sok
Mɔstɔ kin mek di sɔfayz haydrolisis, we kin mek di embrittlement wɔs
Praktikal gayd: If yu fɔ yuz PTFE tep na say we gɛt smɔl doz raytin we gɛt briz, chenj am ɔltɛm. Insay vaykum ɔ inɛt gas, layf kin lɔng bɔt nɔto we nɔ gɛt limit.
⚠️ Na if dɛn spɛshal modify am – standad PTFE nɔ rɛkɔmɛnd
Sɛnɛri dɛn we gɛt ay-rɛdyushɔn fɔ avɔyd (>100 kGy) .
Aplay fɔm
Kumulativ Doz we dɛn kin yuz
Wetin Mek PTFE De Fail
Bɛtɛ Ɔda we fɔ du am
Nyuklia riaktɔ kɔr
>1 MGy
Matirial de krɔs
Polyimide (Kapton) ɔ PEEK
Praymari lɔp kɔmpɔnɛnt dɛn
100 kGy – 1 MGy
Sivɛri embrittlement
Polyimide / PEK
Spacecraft ɛkstirian
Di patikyula raytin we gɛt ay ɛnaji
Nɔ ebul fɔ bia fɔ lɔng tɛm we dɛn de ɛkspos am
Polyimide / PEK
Ha-doz gama stεrilayzεshכn (>100 kGy) .
>100 kGy we yu de du
Strɔng lɔs >80% .
Polyimide we dɛn kɔl
Sɔma – No di Limit
Radieshɔn Doz Lɛvɛl
PTFE Tep Pɔfɔmɛnshɔn
Rikɔmɛndishɔn
< 10 kGy (stεrilayz fכ it) .
Nɔ degradɛshɔn we pɔsin kin si; mεkanikal prכpati dεm we dεn kin rεtεn bכku bכku wan
✅ Sef fɔ yuz
10 – 50 kGy (mεdikal stεrilayzεshכn) .
Sɔm embrittlement; tεnsil trεnk rεdכks 30-50% .
⚠️ Yuz wan tɛm, dɔn riples
50 – 100 kGy
Siriɔs embrittlement; di surface krak krak
❌ Dɛn nɔ kin advays am
> 100 kGy we yu de du
Matirial de krɔs; de rilis gas dɛn we de rɔtin
❌ Dɛn nɔ fɔ yuz am – yuz polyimide ɔ PEEK
Ki tek-away: Wik redyushɔn rɛsistɛns na wan men limiteshɔn fɔ PTFE ay-tɛmpracha tep . I kwalifay nכmכ fכ lכw dכz rεdyushכn envayroment (fud εn mεdikal stεrilayzεshכn). I de gi fayn fayn ay-tɛmpracha rɛsistɛns ɛn kemikal stebiliti na dɛn sɛtin dɛn de. Fɔ fil dɛm we gɛt ay redyushɔn lɛk nyuklia riaktɔ ɔ spɛshal ship, dɛn fɔ adopt prɔfɛshɔnal tin dɛn we nɔ de mek redyushɔn.
In sɔmari , PTFE tep nɔto matirial we nɔ de mek redyushɔn. pan jכs 1 kGy gama εkspכzכn, in tεnsil trεnk de dכp to 25% fכ di כrijinal. i fayn fכ כnli fכ lכw dכz aplikεshכn lεk it εn mεdikal stεrilayzεshכn (≤50 kGy). Fɔ kumulativ doz dɛn we pas 100 kGy – lɛk nyuklia riaktɔ kɔr, praymari lɔp, ɔ spɛshal kraft ɛkstirian – dɛn nɔ fɔ yuz PTFE.
If yu aplikeshɔn involv redyushɔn, fɔs no di kumulativ doz we yu de ɛkspɛkt. Blow 10 kGy, PTFE tep de wok fayn fayn wan. Bitwin 10-50 kGy, yuz wan tɛm ɛn riples. Abov 50 kGy, swich to polyimide ɔ PEEK.
Nid ɛp fɔ pik di rayt tep fɔ wan raytin ɛnvayrɔmɛnt? Aokai PTFE kin gi doz-spɛsifi k tɛst data ɛn ɔda rɛkɛmɔndeshɔn. Kɔntakt wi wit yu raytin sɔs, di doz we yu de op fɔ, ɛn di ditel dɛn bɔt aw fɔ yuz am.
