Hydroxyethyl methylcellulose (HEMC) ndi polima ntchito kwambiri m'mafakitale osiyanasiyana, kuphatikizapo mankhwala, chakudya, zodzoladzola, ndi zomangamanga. Imayamikiridwa chifukwa cha kukhuthala, emulsifying, kupanga mafilimu, komanso kukhazikika. Ngakhale kuti imagwiritsidwa ntchito kwambiri, kuonetsetsa kuti chitetezo chikuyenda bwino ndikuchigwiritsa ntchito ndikofunikira. Nawa njira zodzitetezera pogwiritsira ntchito hydroxyethyl methylcellulose:
1. Kumvetsetsa Nkhaniyo
HEMC ndi non-ionic cellulose ether, yochokera ku cellulose pomwe magulu a hydroxyl asinthidwa pang'ono ndi magulu a hydroxyethyl ndi methyl. Kusintha uku kumawonjezera kusungunuka kwake ndi magwiridwe antchito. Kudziwa mankhwala ake ndi zinthu zakuthupi, monga kusungunuka, kukhuthala kwake, ndi kukhazikika kwake, kumathandiza kuchigwira bwino.
2. Zida Zodzitetezera (PPE)
Magolovesi ndi Zovala Zodzitetezera:
Valani magolovesi osamva mankhwala kuti musakhudze khungu.
Gwiritsani ntchito zovala zodzitchinjiriza, kuphatikiza malaya a manja aatali ndi mathalauza, kuti musamawonekere pakhungu.
Chitetezo cha Maso:
Gwiritsani ntchito magalasi achitetezo kapena zishango zakumaso kuti muteteze ku fumbi kapena splashes.
Chitetezo cha Mpumulo:
Ngati mukugwira HEMC mu mawonekedwe a ufa, gwiritsani ntchito masks a fumbi kapena zopumira kuti musapume ndi tinthu tating'onoting'ono.
3. Kugwira ndi Kusunga
Mpweya wabwino:
Onetsetsani kuti malo ogwira ntchito ali ndi mpweya wokwanira kuti muchepetse kuchulukana kwafumbi.
Gwiritsani ntchito mpweya wotuluka m'dera lanu kapena ziwongolero zina za mainjiniya kuti muchepetse kuchuluka kwa mpweya wocheperako zomwe zimafunikira.
Posungira:
Sungani HEMC pamalo ozizira, owuma kutali ndi chinyezi komanso kuwala kwa dzuwa.
Zotengerazo zikhale zotsekedwa mwamphamvu kuti zipewe kuipitsidwa ndi kuyamwa chinyezi.
Sungani kutali ndi zinthu zosemphana ngati zopangira ma oxidizer amphamvu.
Kusamala:
Pewani kupanga fumbi; gwirani mofatsa.
Gwiritsani ntchito njira zoyenera monga kunyowetsa kapena kugwiritsa ntchito chotolera fumbi kuti muchepetse tinthu tandege.
Khazikitsani njira zosamalira bwino m'nyumba kuti muteteze fumbi kukhala pamwamba.
4. Njira zotayira ndi kutayikira
Zowonongeka Pang'ono:
Sesani kapena kusesa zinthuzo ndikuziika m’chidebe choyatsira choyenera.
Pewani kusesa kouma kuti fumbi lisafalikire; gwiritsani ntchito njira zonyowa kapena zoyeretsera zosefedwa ndi HEPA.
Kuwonongeka Kwakukulu:
Chotsani m'deralo ndikulowetsa mpweya.
Valani PPE yoyenera ndipo mukhale ndi zotayikira kuti musafalikire.
Gwiritsani ntchito zinthu za inert monga mchenga kapena vermiculite kuti mutenge chinthucho.
Tayani zinthu zomwe zasonkhanitsidwa motsatira malamulo amderalo.
5. Zowongolera Zowonekera ndi Ukhondo Wamunthu
Malire Owonekera:
Tsatirani malangizo a Occupational Safety and Health Administration (OSHA) kapena malamulo amdera lanu okhudzana ndi malire okhudzana ndi kukhudzidwa.
Ukhondo Wamunthu:
Sambani m'manja bwinobwino mukagwira HEMC, makamaka musanadye, kumwa, kapena kusuta.
Pewani kugwira nkhope yanu ndi magolovesi kapena manja omwe ali ndi kachilomboka.
6. Zowopsa Zaumoyo ndi Njira Zothandizira Choyamba
Kukoka mpweya:
Kuwonekera kwa nthawi yayitali ku fumbi la HEMC kungayambitse kupsa mtima.
Musunthireni munthu wokhudzidwayo ku mpweya wabwino ndikupita kuchipatala ngati zizindikiro zikupitirirabe.
Kukhudzana ndi Khungu:
Sambani malo okhudzidwa ndi sopo ndi madzi.
Funsani dokotala ngati mkwiyo uyamba.
Kuyang'ana Maso:
Sambani maso bwinobwino ndi madzi kwa mphindi 15.
Chotsani magalasi ngati alipo komanso osavuta kuchita.
Funsani kuchipatala ngati mkwiyo ukupitirira.
Kudya:
Muzimutsuka mkamwa ndi madzi.
Osayambitsa kusanza pokhapokha atalangizidwa ndi azachipatala.
Funsani kuchipatala ngati mwamwa mowa wambiri.
7. Zowopsa za Moto ndi Kuphulika
HEMC siwopsereza kwambiri koma imatha kuyaka ngati ili pamoto.
Njira Zozimitsa Moto:
Gwiritsani ntchito kupopera madzi, thovu, mankhwala owuma, kapena mpweya woipa kuti muzimitse moto.
Valani zida zodzitchinjiriza, kuphatikiza zida zodzitetezera zokha (SCBA), polimbana ndi moto wokhudza HEMC.
Pewani kugwiritsa ntchito mitsinje yamadzi yothamanga kwambiri, yomwe imatha kufalitsa moto.
8. Kusamala kwachilengedwe
Pewani Kutulutsa Zachilengedwe:
Pewani kutulutsidwa kwa HEMC m'chilengedwe, makamaka m'madzi, chifukwa zingakhudze zamoyo zam'madzi.
Kutaya:
Taya HEMC molingana ndi malamulo amderali, aboma, ndi boma.
Osathamangira m'madzi popanda chithandizo choyenera.
9. Chidziwitso Choyang'anira
Kulemba ndi Magulu:
Onetsetsani kuti zotengera za HEMC zalembedwa bwino molingana ndi malamulo.
Dziwani bwino za Safety Data Sheet (SDS) ndipo tsatirani malangizo ake.
Mayendedwe:
Tsatirani malamulo oyendetsera HEMC, kuwonetsetsa kuti zotengera zasindikizidwa ndi zotetezedwa.
10. Maphunziro ndi Maphunziro
Maphunziro Ogwira Ntchito:
Perekani maphunziro a kasamalidwe koyenera, kasungidwe, ndi katayidwe ka HEMC.
Onetsetsani kuti ogwira ntchito akudziwa zoopsa zomwe zingachitike komanso njira zodzitetezera.
Njira Zadzidzidzi:
Konzani ndikulankhulana ndi njira zadzidzidzi zotayira, kutayikira, ndi kuwonekera.
Chitani zoyeserera pafupipafupi kuti mutsimikizire kukonzekera.
11. Kusamala kwapadera kwa mankhwala
Zowopsa Zopangira:
Malingana ndi kupanga ndi kuyika kwa HEMC, zowonjezera zowonjezera zingakhale zofunikira.
Onani malangizo okhudzana ndi malonda ndi malingaliro a wopanga.
Malangizo okhudza kugwiritsa ntchito:
M'zamankhwala, onetsetsani kuti HEMC ndi ya kalasi yoyenera kumeza kapena jekeseni.
Pomanga, dziwani fumbi lomwe limapangidwa panthawi yosakaniza ndikugwiritsa ntchito.
Potsatira njira zodzitetezera izi, kuopsa kwa kugwiritsa ntchito hydroxyethyl methylcellulose kumatha kuchepetsedwa kwambiri. Kuonetsetsa kuti malo ogwirira ntchito otetezeka kumateteza antchito komanso kusunga kukhulupirika kwa mankhwala ndi malo ozungulira.
Nthawi yotumiza: May-31-2024