N'ụlọ ọrụ na-edozi nri, ụlọ ọrụ ngwaọrụ ahụike, na ụfọdụ ụlọ ọrụ mmepụta ihe, ụzarị gamma ma ọ bụ ibé eletrọn ka a na-eji maka igba ogwu. Ọ bụrụ na ịchọrọ iji PTFE elu-okpomọkụ teepu na ndị a gburugburu - ma ọ bụ njọ, na a nuklia ike osisi - ị ga-aghọta ya radieshon oke ókè.
Azịza dị mkpirikpi: PTFE dị nnọọ mfe ịnweta radieshon ionizing. Ọ na-arụ ọrụ nke ọma na ngwa obere dose (dị ka sterilization nri) mana ọ na-ada nke ọma na nnukwu doses.
Aokai PTFE anwalela teepu PTFE n'okpuru ọnọdụ radieshon dị iche iche. Isiokwu a na-akọwa usoro mmebi iwu, ọnụ ụzọ dose, yana ebe ị na-ekwesịghị iji teepu PTFE.
Eziokwu Isi - PTFE nwere Nguzogide Radiation na-adịghị mma
Akụkụ bụ isi nke teepu okpomọkụ dị elu PTFE bụ polytetrafluoroethylene (PTFE). N'adịghị ka ezigbo okpomọkụ na nkwụsi ike kemịkalụ ya, PTFE na- enwe mmetụta nke ukwuu maka radieshon ionizing dị ka ụzarị gamma na ogwe ọkụ eletrik.
Gịnị kpatara? Radiation na-agbaji agbụ carbon-fluorine (CF) na ọkpụkpụ azụ polymer, na-ebute scission molekụla. Ihe onwunwe na-aghọ kenkuwa ma tụfuo ike n'ibu.
Mmetụta bara uru: teepu PTFE dabara naanị maka gburugburu ebe enwere obere usoro radieshon. A machibidoro ya iwu maka ihe ngosi ọkụ dị elu dị ka cores reactor nuklia ma ọ bụ loops bụ isi.
Mmebi arụrụ arụ n'okpuru Radiation - Site na ọnụọgụgụ
Mgbe ekpughere ya na radieshon, agbụ molekụla PTFE na-agbaji, na-ebute mbelata nke ukwuu na akụrụngwa akụrụngwa. Egosiri mgbanwe ndị a kapịrị ọnụ n'okpuru:
Usoro ọgwụgwọ radieshon
gburugburu
Mmetụta na PTFE
1 kGy (0.1 Mrad)
Ikuku
Ike tensile na-adaba na ~25% nke uru mbụ
10kGy
Ikuku
Mmụba dị mkpa; elu cracking amalite
100kGy
Ikuku
Nbibi siri ike; teepu nwere ike daa mgbe ejiri ya
1 MGy (1000kGy)
Ikuku
Mbelata elongation ruo 87% ; ọnwụ ike tensile 54%
Data mgbakwunye:
N'ikuku na-adịghị arụ ọrụ (vacuum, nitrogen, ma ọ bụ deuterium), mmebi ahụ na-eji nwayọọ nwayọọ ma ọ ka bụ ihe a na-apụghị izere ezere.
Njikọ ọkụ-radiation (oke okpomọkụ + radieshon) na-eme ka ịka nká dịkwuo elu.
Aokai PTFE na-adụ ndị ahịa ọdụ na teepu PTFE ọkọlọtọ anyị tozuru oke maka ịgba ọgwụ mgbochi nri (≤10 kGy) na ịgba ọgwụ mgbochi otu okirikiri (≤50 kGy). Maka nchikota onunu ogwu kariri 100kGy ma obu otutu cycles sterilization, anyi na-akwado ka itughari na teepu polyimide.
Ihe na-akpata gburugburu ebe obibi na-eme ka mbibi dị ngwa ngwa
Ihe kpatara ya
Mmetụta na PTFE N'okpuru Radiation
Igwe ikuku (oxygen)
Oxygen na-eme ka mmebi ahụ dịkwuo elu - radicals free na-emeghachi omume na O₂, na-eme ka agbụ ígwè karịa.
Ikuku ikuku (vacuum/N₂)
A na-ebelata mmebi ahụ mana ọ ka dị mkpa - enweghị ike izere kpamkpam
Mmiri nwere ike ịkwalite hydrolysis elu, na-akawanye njọ embrittlement
Ntuziaka bara uru: Ọ bụrụ na ị ga-ejiri teepu PTFE na mpaghara radieshon dị ala nke ikuku dị ugbu a, dochie ya ugboro ugboro. Na agụụ ma ọ bụ gas inert, a na-agbatị ndụ mana ọ bụghị oke.
Ọdabara Ọnọdụ & ịdọ aka ná ntị ihe egwu
Ngwa Radiation dị obere akwadoro (≤50kGy)
Ngwa
Ọgwụ a na-ahụkarị
PTFE teepu adabara
Nri igba ogwu
1-10 kGy
✅ Ọ dị mma - enweghị mmebi a na-ahụ anya
Ngwọta elu ngwaọrụ ahụike
15-50kGy (otu okirikiri)
✅ Anakwere - nwere ike na-agbaji mgbe ọtụtụ okirikiri gachara
Akụrụngwa ọgwụ
10-25kGy
✅ Anakwere - dochie mgbe okirikiri nke ọ bụla maka iji dị oke mkpa
Akụkụ na-abụghị isi nke osisi nuklia (dịka ọmụmaatụ, ndozi ọkpọkọ)
Obere dose, PTFE gbanwetụrụ achọrọ
⚠️ Naanị ma ọ bụrụ na agbanwere ya - PTFE ọkọlọtọ adịghị atụ aro
Ihe ngosi dị elu iji zere (> 100kGy)
Ngwa
Nchịkọta dose
Ihe kpatara PTFE ji ada
Nhọrọ ka mma
Isi reactor nuklia
> 1 MGy
Ihe na-akụda
Polyimide (Kapton) ma ọ bụ PEEK
Ngwa ngwa loop nke mbụ
100kGy - 1 mgy
Mgbawa siri ike
Polyimide / PEEK
Ụgbọ elu mputa
Igwe ọkụ dị elu radieshon
Enweghị ike iguzogide mkpughe ogologo oge
Polyimide / PEEK
Ọgwụ gamma dị elu (> 100 kGy)
> 100kGy
Ọnwụ ike>80%
Polyimide
Nchịkọta - Mara oke
Ọkwa dose nke radieshon
Arụmọrụ teepu PTFE
Nkwanye
<10kGy (ịgba ọgwụ mgbochi nri)
Enweghị nbibi anya; n'ibu ihe ejigidere
✅ Nchekwa maka ojiji
10 - 50kGy (ịgba ọgwụ mgbochi ọrịa)
Ụfọdụ embrittlement; ike tensile belatara 30-50%
⚠️ Jiri otu ugboro, wee dochie ya
50-100 kGy
Mgbawa siri ike; elu mgbawa
❌ A naghị atụ aro ya
> 100kGy
Ihe crumbles; na-ahapụ ikuku ndị na-emebi emebi
❌ Amachibidoro - jiri polyimide ma ọ bụ PEEK
Isi ihe ewepụrụ: Nguzogide radieshon na-adịghị ike bụ oke oke nke teepu okpomọkụ dị elu PTFE . O tozuru oke maka gburugburu radieshon dị ala (nri na igba ogwu ọgwụ). Ọ na-enye ezigbo nguzogide oke okpomọkụ yana nkwụsi ike kemịkalụ na ntọala ndị ahụ. Maka mpaghara ọkụ ọkụ dị elu dị ka igwe ọkụ nuklia ma ọ bụ ụgbọ elu, a ghaghị ịnakwere ihe ndị ọkachamara na-eguzogide radieshon.
Na nchịkọta , teepu PTFE abụghị ihe na-eguzogide radieshon. Na naanị 1 kGy nke mkpughe gamma, ike ike ya na-agbada ruo 25% nke mbụ. Ọ dabara naanị maka ngwa dị ala dị ka nri na ọgwụ mgbochi (≤50kGy). Maka mkpokọta mkpokọta karịrị 100 kGy - dị ka cores reactor nuklia, loops bụ isi, ma ọ bụ mpụta ụgbọ elu - PTFE amachibidoro.
Ọ bụrụ na ngwa gị gụnyere radieshon, buru ụzọ chọpụta mkpokọta mkpokọta a na-atụ anya ya. N'okpuru 10kGy, teepu PTFE na-arụ ọrụ nke ọma. N'etiti 10-50 kGy, jiri otu ugboro dochie ya. Karịrị 50kGy, gbanwee gaa na polyimide ma ọ bụ PEEK.
Achọrọ enyemaka ịhọrọ teepu ziri ezi maka gburugburu radieshon? Aokai PTFE nwere ike ịnye data nyocha kpọmkwem dose yana ndụmọdụ ndị ọzọ. Kpọtụrụ anyị isi iyi radieshon gị, dose echere na nkọwa ngwa.
