Ko te nuinga o ngā momo rauemi o ngā karapu nitrile ka wehea i runga i te parakore o ngā rauemi mata, ngā āhuatanga ā-tinana, te hangarau tukatuka me ngā āhuatanga e tika ana, me ētahi atu. Ko ngā huarahi wehewehe noa koia ēnei:
I. Wehea kia rite ki te parakore o ngā rauemi mata me te nui o te poke
- Ngā karapu nitrile ā-ahumahi
◦ He iti noa te nui o te rapa nitrile i roto i ngā rauemi mata (ko te tikanga he 60%-80%), ka tāpirihia he maha atu ngā whakakī, ngā whakangawari me ētahi atu tāpiringa, ā, he nui te nui o ngā poke (hei tauira, ngā katote konganuku, ngā monomer toenga).
◦ He pai mō ngā āhuatanga ahumahi whānui (hei tauira, te tiaki mīhini, te horoi), me ngā hiahia taketake mō te ātete ki te pakū, te ātete ki te hinu me te paru, engari kāore e nui ngā whakaritenga mō te horoi, te mōrearea mate pāwera, me ētahi atu.
- Ngā karapu Nitrile Hauora/Kai
◦ He teitei ake te parakore o te rapa nitrile (≥80%), he tino whakahaere i ngā momo me te horopeta o ngā tāpiringa, kāore he tāpiringa mate pukupuku, ā, he iti rawa te ihirangi poke (hei tauira, ngā mea ka taea te tango, ngā taupū moroiti e rite ana ki ngā paerewa e tika ana, pērā i te US FDA, ngā whakaritenga tiwhikete EU CE).
◦ He pai ake te hototahitanga ki te koiora, kāore e ngāwari te pāwera, he pai mō te tirotiro hauora, te tukatuka kai me ētahi atu āhuatanga me ngā whakaritenga teitei mō te akuaku me te haumaru.
Tuarua, e ai ki ngā tohu mahi ā-tinana
- Ngā karapu nitrile kaha noa
◦ Ko te kaha haehae kei roto i te awhe 15-25kN/m, te kaha kume 10-20MPa, te roa 400%-600%, he pai mō ngā mahi māmā o ia rā (hei tauira, ngā mahi whare, ngā mahi ahumahi iti te kaha).
- Ngā karapu nitrile kaha teitei
◦ Kaha haehae ≥25kN/m, kaha kume ≥20MPa, roanga ≥600%, ko ētahi hua ka arotauhia mā te tauira (hei tauira, te whakanui ake i te kiato hononga-whiti) te hoahoa matotoru rānei, kua tino whakapaitia te ātete ki te pakū me te ātete ki te poka, he pai mō ngā mahi kaha-nui pērā i te hanga, te hanga motuka me te ahumahi matū.
III. Wehea e te mahi me te tukanga motuhake
- Ngā karapu nitrile kore-paura
◦ Tangohia te paura mā te tukanga pēnei i te maimoatanga irahiko hiko, te horoinga chlorine, me ētahi atu hei karo i te poke o te puehu me te mōrearea mate pāwera, me te kounga rauemi teitei ake, e whakamahia whānuitia ana i roto i ngā āhuatanga ma pēnei i te hauora, te hikohiko, te taiwhanga, me ētahi atu.
- Ngā karapu nitrile ātete matū
◦ Whakamahia te rapa nitrile he nui te ihirangi acrylonitrile (30%-40% te ihirangi acrylonitrile, ko te nui ake o te ihirangi, ko te kaha ake o te ātete hinu), he pai ake te ātete ki ngā whakarewa waro, ngā waikawa me ngā kawakore me ētahi atu matū, nō te rauemi tiaki ngaio.
- Ngā karapu nitrile ārai-pūmau/ārahi hiko
◦ Tāpirihia he kaihopu ārai-pūmau, he rauemi kawe hiko rānei, te whakahaere ātete mata i te 10⁶-10¹¹Ω (ārai-pūmau) 10⁴-10⁶Ω rānei (kawe hiko), he pai mō te hanga hiko, ngā haurua-ā-ira me ētahi atu āhuatanga tika e pā ana ki te pūmau, me tutuki te taumata rauemi i te paerewa ārai-pūmau (pēnei i te ISO 14644).
Tuawhā, e ai ki te wāhanga tiwhikete paerewa ahumahi – Te tutuki i ngā paerewa hauora (pēnei i te EN 455, ASTM D6319): me paahitia te whakamātautau moroiti, te whakamātautau paitini pūtau, me ētahi atu, he tino pakari ngā whakaritenga mō te taumata rauemi, kia mau ai te haumaru o te pa atu ki te tinana tangata, ki ngā taonga hauora rānei. – Te tutuki i ngā paerewa pa atu ki te kai (hei tauira, FDA 21 CFR 177.2600): Kua rāhuitia ngā tāpiringa kino, ā, ko te ātete hekenga o te rauemi e tutuki ana i te paerewa, e tika ana mō te pa atu ki te kai. – Te tutuki i ngā paerewa tiaki ahumahi (hei tauira, EN 374, ANSI/ISEA 105): te arotahi ki te ātete matū, te ātete ki te pao, te ātete ki te wero, me ētahi atu, ā, ka whakarōpūtia ki ngā taumata (hei tauira, ngā taumata ātete ki te pao o te Taumata 1-5) e ai ki ngā hiahia ahumahi rerekē. Hei whakarāpopototanga, ko te taumata rauemi o ngā karapu nitrile he whakaata whānui o te "parakore, te mahi me te haumaru": ko te taumata ahumahi e arotahi ana ki te pakari taketake, ko te taumata hauora/kai e whakanui ana i te parakore me te haumaru, ā, ko te taumata mahi motuhake e whakapakari ana i te mahi ngaio mō ngā wāhi motuhake. I te wā e whiriwhiri ana, me taurite te kounga o ngā hua e rite ana ki ngā paearu o te whakamahinga (hei tauira, te akuaku, te tiaki, te ārai-pūmau, me ētahi atu).
Wā tuku: Pipiri-26-2025