A cikin masana'antar sarrafa abinci, masana'antar na'urorin likitanci, da wasu wuraren masana'antu, ana amfani da hasken gamma ko igiyoyin lantarki don haifuwa. Idan kana buƙatar amfani Tef mai zafi na PTFE a cikin waɗannan mahalli - ko mafi muni, a cikin tashar makamashin nukiliya - dole ne ku fahimci iyakokin juriyar radiation.
Amsa ta takaice: PTFE yana da saurin kamuwa da ionizing radiation. Yana aiki da kyau a cikin ƙananan aikace-aikace (kamar haifuwa na abinci) amma ya kasa yin bala'i a babban allurai.
Aokai PTFE ya gwada kaset na PTFE a ƙarƙashin yanayi daban-daban na radiation. Wannan labarin yana bayanin hanyoyin lalata, ƙofofin kashi, da kuma inda bai kamata ku taɓa amfani da tef ɗin PTFE ba.
Gaskiyar Mahimmanci - PTFE Yana da Rashin Juriya na Radiation
Babban bangaren PTFE high-zazzabi tef shine polytetrafluoroethylene (PTFE). Ba kamar kyakkyawan yanayin zafi da kwanciyar hankali na sinadarai ba, PTFE yana da saurin kamuwa da ionizing radiation kamar haskoki gamma da filayen lantarki.
Me yasa? Radiation yana karya haɗin carbon-fluorine (CF) da kashin baya na polymer, yana haifar da sarkar kwayoyin halitta. Kayan ya zama raguwa kuma ya rasa ƙarfin injiniya.
Ma'anar aiki: Tef ɗin PTFE ya dace kawai don mahalli tare da ƙananan allurai na radiation. Gabaɗaya an haramta shi don babban yanayin hasashe kamar muryoyin injin nukiliya ko madaukai na farko.
Lalacewar Ayyuka A ƙarƙashin Radiation - Ta Lambobi
Lokacin da aka fallasa su zuwa radiation, sassan kwayoyin PTFE suna karya, yana haifar da raguwar kaddarorin inji. Ana nuna takamaiman canje-canje a ƙasa:
Radiation Kashi
Muhalli
Tasiri kan PTFE
1 kGy (0.1 Mrad)
Iska
Ƙarfin ɗamara ya ragu zuwa ~25% na ƙimar asali
10 kgy
Iska
Muhimmancin ɓarna; saman fage ya fara
100 kGy
Iska
Mummunan lalacewa; tef na iya rugujewa lokacin da ake sarrafa su
1 MGy (1000kGy)
Iska
Tsawaita asarar har zuwa 87% ; asarar ƙarfin ƙarfi 54%
Ƙarin bayanai:
A cikin inert yanayi (vacuum, nitrogen, ko deuterium), lalacewa yana da hankali amma har yanzu ba zai yuwu ba.
Aokai PTFE yana ba abokan ciniki shawara cewa daidaitaccen tef ɗin mu na PTFE ya cancanci haifuwar abinci (≤10 kGy) da haifuwar na'urar likita mai zagaye ɗaya (≤50kGy). Don tarin allurai sama da 100kGy ko hawan haifuwa da yawa, muna ba da shawarar canzawa zuwa tef ɗin polyimide.
Dalilan Muhalli Masu Saukar Lalacewa
Factor
Tasiri akan PTFE Karkashin Radiation
Yanayi (oxygen)
Oxygen yana haɓaka lalacewa - radicals kyauta suna amsawa tare da O₂, yana haifar da ƙarin sarƙoƙi.
Inert yanayi (vacuum/N₂)
An rage lalacewa amma har yanzu yana da mahimmanci - ba za a iya kauce masa gaba ɗaya ba
Babban zafin jiki
Tasirin haɗin kai na thermal-radiation - tsufa yana haɓaka sosai
Danshi
Danshi na iya inganta haɓakar hydrolysis na sama, yana daɗaɗawa embrittlement
Jagorar aiki: Idan dole ne ku yi amfani da tef ɗin PTFE a cikin yanayin raɗaɗi mai ƙarancin ƙarfi tare da iska, maye gurbin shi akai-akai. A cikin vacuum ko inert gas, an tsawaita rayuwa amma ba marar iyaka ba.
Abubuwan da suka dace & Gargaɗin Haɗari
Abubuwan Shawarar Ƙananan Kashi na Radiation Aikace-aikacen (≤50kGy)
Aikace-aikace
Yawan Adadin
Dacewar Tef PTFE
Haifuwar abinci
1-10 kg
✅ Mai kyau - babu lalacewa a bayyane
Kamuwa da cuta saman na'urar likita
15-50kGy (zagaye ɗaya)
✅ Abin yarda da shi - na iya zama tsintsiya madaurinki daya bayan hawan keke da yawa
Kayan aikin magunguna
10-25 kg
✅ Karɓar - maye gurbin bayan kowace zagayowar don amfani mai mahimmanci
Wuraren da ba na asali ba na tsire-tsire na nukiliya (misali, gyaran bututu)
Ƙananan kashi, PTFE da aka gyara ana buƙata
⚠️ Sai kawai idan an gyara na musamman - daidaitaccen PTFE ba a ba da shawarar ba
Yanayin Hasken Radiation don Guji (> 100kGy)
Aikace-aikace
Tarin Kashi
Me yasa PTFE Ya Kasa
Kyakkyawan Madadin
Nuclear reactor core
> 1 MG
Material crumbles
Polyimide (Kapton) ko PEEK
Abubuwan madauki na farko
100 kGy - 1 MGy
Tsananin tashin hankali
Polyimide / PEEK
Jirgin sama na waje
High-makamashi barbashi radiation
Ba za a iya jure wa dogon lokaci ba
Polyimide / PEEK
Haifuwar gamma mai girma (> 100kGy)
> 100 kGy
Rashin ƙarfi> 80%
Polyimide
Takaitawa - Sani Iyaka
Matsayin Kashi na Radiation
Ayyukan Tef na PTFE
Shawara
<10kGy (haɓakar abinci)
Babu ɓatawar bayyane; na inji Properties sun fi mayar riƙe
✅ Amintaccen amfani
10 - 50kGy (haifuwa na likita)
Wasu ɓarna; Ƙarfin ƙarfi ya ragu 30-50%
⚠️ Yi amfani sau ɗaya, sannan a canza
50 - 100 kg
Tsanani mai tsanani; fashewar saman
❌ Ba a ba da shawarar ba
> 100 kGy
Material crumbles; yana sakin iskar iskar gas
❌ An haramta - yi amfani da polyimide ko PEEK
Maɓalli mai ɗaukar nauyi: Rashin juriya na raɗaɗi shine babban iyakancewar tef ɗin zafin jiki na PTFE . Ya cancanci kawai don ƙananan mahalli na radiation (abinci da haifuwa na likita). Yana ba da kyakkyawan juriya mai zafi da kwanciyar hankali a cikin waɗannan saitunan. Don manyan filayen hasashe kamar na'urorin sarrafa makamashin nukiliya ko jirgin sama, dole ne a ɗauki ƙwararrun kayan da ke jure radiation.
A taƙaice , tef ɗin PTFE ba abu ne mai juriya ba. A kawai 1kGy na bayyanar gamma, ƙarfin ƙarfinsa ya ragu zuwa 25% na asali. Ya dace da ƙananan aikace-aikace kamar abinci da haifuwa (≤50kGy). Don tarin allurai sama da 100 kGy - kamar su madaidaicin madaurin nukiliya, madaukai na farko, ko na waje - PTFE an haramta.
Idan aikace-aikacenku ya ƙunshi radiation, da farko ƙayyade adadin adadin da ake tsammani. A ƙasa 10kGy, tef ɗin PTFE yana aiki lafiya. Tsakanin 10-50 kGy, yi amfani da sau ɗaya kuma maye gurbin. Sama da 50kGy, canza zuwa polyimide ko PEEK.
Kuna buƙatar taimako don zaɓar madaidaicin tef don yanayin radiation? Aokai PTFE na iya samar da takamaiman bayanan gwajin kashi da madadin shawarwari. Tuntube mu tare da tushen hasken ku, adadin da ake tsammani, da cikakkun bayanan aikace-aikacen.
