Cov khoom siv ntawm cov hnab looj tes nitrile feem ntau yog muab faib raws li qhov huv ntawm cov khoom siv raw, cov khoom siv lub cev, cov txheej txheem ua thiab cov xwm txheej siv tau, thiab lwm yam. Cov kev faib ua feem ntau yog raws li nram no:
I. Muab faib raws li qhov huv ntawm cov khoom siv raw thiab cov ntsiab lus tsis huv
- Cov hnab looj tes nitrile qib kev lag luam
◦ Cov roj hmab nitrile hauv cov khoom siv raw yog qis heev (feem ntau yog 60% -80%), yuav ntxiv ntau cov khoom sau, cov khoom ua kom mos thiab lwm yam khoom ntxiv, thiab cov ntsiab lus ntawm cov khoom tsis huv (piv txwv li cov hlau ions, cov monomers seem) yog siab.
◦ Haum rau cov xwm txheej kev lag luam dav dav (piv txwv li kev saib xyuas tshuab, kev ntxuav), nrog rau cov kev xav tau yooj yim rau kev tiv taus kev sib txhuam, roj thiab av nkos, tab sis tsis yog qhov yuav tsum tau ua kom huv si, kev pheej hmoo ntawm kev ua xua, thiab lwm yam.
- Cov hnab looj tes Nitrile kho mob/Khoom noj khoom haus
◦ Cov roj hmab nitrile uas huv dua (≥80%), kev tswj hwm nruj rau cov hom thiab cov koob tshuaj ntawm cov khoom ntxiv, tsis muaj cov khoom ntxiv uas ua rau mob qog noj ntshav, thiab cov ntsiab lus tsis huv qis heev (piv txwv li cov khoom rho tawm, cov ntsuas microbial raws li cov qauv cuam tshuam, xws li US FDA, EU CE daim ntawv pov thawj xav tau).
◦ Zoo dua biocompatibility, tsis yooj yim rau kev ua xua, tsim nyog rau kev kuaj mob, kev ua zaub mov thiab lwm yam xwm txheej nrog cov kev xav tau siab rau kev huv thiab kev nyab xeeb.
Qhov thib ob, raws li cov ntsuas kev ua tau zoo ntawm lub cev
- Cov hnab looj tes nitrile muaj zog ib txwm muaj
◦ Lub zog tsim kua muag feem ntau yog nyob rau hauv qhov ntau ntawm 15-25kN / m, lub zog tensile 10-20MPa, elongation 400% -600%, tsim rau kev ua haujlwm txhua hnub (piv txwv li kev ua haujlwm hauv tsev, kev ua haujlwm tsis muaj zog).
- Cov hnab looj tes nitrile muaj zog heev
◦ Lub zog rhuav tshem ≥25kN / m, lub zog tensile ≥20MPa, elongation ≥600%, qee cov khoom raug kho kom zoo los ntawm cov mis (piv txwv li nce qhov sib txuas ntawm qhov sib txuas) lossis tsim kom tuab, kev tiv thaiv kev sib txhuam thiab kev tiv thaiv kev sib tsoo tau zoo dua, tsim nyog rau kev ua haujlwm siab xws li kev tsim kho, kev tsim tsheb thiab kev lag luam tshuaj lom neeg.
III. Muab faib los ntawm kev ua haujlwm tshwj xeeb thiab txheej txheem
- Cov hnab looj tes nitrile tsis muaj hmoov
◦ Tshem tawm cov hmoov los ntawm cov txheej txheem xws li kev kho mob electron microscope, ntxuav chlorine, thiab lwm yam kom tsis txhob muaj hmoov av thiab kev pheej hmoo ntawm kev ua xua, nrog rau cov khoom siv qib siab dua, feem ntau siv rau hauv cov xwm txheej huv xws li kev kho mob, khoom siv hluav taws xob, chaw kuaj mob, thiab lwm yam.
- Cov hnab looj tes nitrile uas tiv taus tshuaj lom neeg
◦ Siv cov roj hmab nitrile uas muaj acrylonitrile ntau (acrylonitrile muaj 30% -40%, qhov ntau dua, qhov muaj zog dua, nws tiv taus roj), zoo dua tiv taus cov organic solvents, acids thiab alkalis thiab lwm yam tshuaj lom neeg, yog cov khoom siv tiv thaiv kev tshaj lij.
- Cov hnab looj tes nitrile tiv thaiv hluav taws xob / conductive
◦ Ntxiv cov tshuaj tiv thaiv hluav taws xob lossis cov khoom siv hluav taws xob conductive, tswj qhov tsis kam ntawm qhov chaw ntawm 10⁶-10¹¹Ω (antistatic) lossis 10⁴-10⁶Ω (conductive), tsim nyog rau kev tsim khoom siv hluav taws xob, semiconductors thiab lwm yam xwm txheej precision-sensitive static, qib khoom siv yuav tsum ua tau raws li tus qauv antistatic (xws li ISO 14644).
Qhov thib plaub, raws li kev faib daim ntawv pov thawj kev lag luam - Ua raws li cov qauv kho mob (xws li EN 455, ASTM D6319): yuav tsum dhau qhov kev sim microbial, kev sim cytotoxicity, thiab lwm yam, cov khoom siv qib yuav tsum nruj, kom ntseeg tau tias muaj kev nyab xeeb ntawm kev sib cuag nrog tib neeg lub cev lossis cov khoom siv kho mob. - Ua raws li cov qauv sib cuag zaub mov (piv txwv li FDA 21 CFR 177.2600): Cov khoom ntxiv uas ua rau muaj kev phom sij raug txwv, thiab kev tiv thaiv kev tsiv teb tsaws chaw ntawm cov khoom siv ua tau raws li tus qauv, tsim nyog rau kev sib cuag ncaj qha nrog zaub mov. - Ua raws li cov qauv tiv thaiv kev lag luam (piv txwv li EN 374, ANSI/ISEA 105): tsom mus rau kev tiv thaiv tshuaj lom neeg, kev tiv thaiv kev sib txhuam, kev tiv thaiv kev sib tsoo, thiab lwm yam, thiab muab faib ua qib (piv txwv li qib tiv thaiv kev sib txhuam ntawm Qib 1-5) raws li kev xav tau kev lag luam sib txawv. Hauv kev xaus, qib khoom siv ntawm cov hnab looj tes nitrile yog qhov kev xav txog "kev huv si, kev ua tau zoo thiab kev nyab xeeb": qib kev lag luam tsom mus rau kev ruaj khov yooj yim, qib kev kho mob / zaub mov hais txog kev huv si thiab kev nyab xeeb, thiab qib kev ua haujlwm tshwj xeeb txhawb nqa kev ua haujlwm rau cov xwm txheej tshwj xeeb. Thaum xaiv, nws yog ib qho tsim nyog los phim cov qib sib xws ntawm cov khoom raws li cov qauv ntawm qhov xwm txheej siv (piv txwv li kev tu cev, kev tiv thaiv, tiv thaiv static, thiab lwm yam).
Lub sijhawm tshaj tawm: Lub Rau Hli-26-2025