Hydroxyethyl methylcellulose (HEMC) yog ib qho polymer siv dav hauv ntau yam lag luam, suav nrog tshuaj, khoom noj, tshuaj pleev ib ce, thiab kev tsim kho. Nws tau txais txiaj ntsig rau nws cov khoom ua kom tuab, emulsifying, zaj duab xis-tsim, thiab stabilizing. Txawm hais tias nws siv dav, kev ua kom muaj kev nyab xeeb thaum nws tuav thiab siv yog qhov tseem ceeb heev. Nov yog cov lus ceeb toom kev nyab xeeb rau kev siv hydroxyethyl methylcellulose:
1. Nkag Siab Txog Cov Khoom Siv
HEMC yog cov cellulose ether uas tsis yog ionic, uas yog ib qho derivative ntawm cellulose qhov twg cov hydroxyl pawg tau hloov pauv ib nrab nrog hydroxyethyl thiab methyl pawg. Qhov kev hloov kho no txhim kho nws cov solubility thiab kev ua haujlwm. Kev paub txog nws cov tshuaj lom neeg thiab lub cev, xws li solubility, viscosity, thiab stability, pab tswj nws kom muaj kev nyab xeeb.
2. Cov Khoom Siv Tiv Thaiv Tus Kheej (PPE)
Cov hnab looj tes thiab cov khaub ncaws tiv thaiv:
Hnav cov hnab looj tes uas tiv taus tshuaj lom neeg kom tiv thaiv kev sib chwv ntawm daim tawv nqaij.
Siv cov khaub ncaws tiv thaiv, suav nrog cov tsho ntev thiab ris ntev, kom tsis txhob raug daim tawv nqaij.
Kev Tiv Thaiv Qhov Muag:
Siv cov tsom iav tiv thaiv kev nyab xeeb lossis lub ntsej muag tiv thaiv kom tiv thaiv cov hmoov av lossis cov dej txaws.
Kev Tiv Thaiv Kev Ua Pa:
Yog tias kov HEMC ua hmoov, siv cov ntaub npog ntsej muag lossis cov khoom ua pa kom tsis txhob ua pa rau cov khoom me me.
3. Kev Tswj thiab Kev Khaws Cia
Kev ua pa:
Xyuas kom muaj cua nkag tau zoo hauv thaj chaw ua haujlwm kom txo tau cov hmoov av.
Siv cov cua tso pa tawm hauv zos lossis lwm yam kev tswj hwm kom tswj tau cov pa phem hauv huab cua kom qis dua qhov txwv uas pom zoo.
Kev Khaws Cia:
Khaws HEMC rau hauv qhov chaw txias, qhuav kom deb ntawm cov dej noo thiab tshav ntuj ncaj qha.
Khaws cov thawv kom nruj kom tiv thaiv kev ua qias tuaj thiab kev nqus dej noo.
Khaws cia kom deb ntawm cov tshuaj tsis sib xws xws li cov tshuaj oxidizing muaj zog.
Cov Kev Ceev Faj Txog Kev Siv:
Tsis txhob ua kom muaj hmoov av; maj mam kov.
Siv cov txheej txheem tsim nyog xws li ua kom ntub lossis siv lub tshuab sau plua plav kom txo cov khoom me me hauv huab cua.
Siv cov kev coj ua zoo hauv tsev kom tiv thaiv cov hmoov av sib sau ua ke rau ntawm cov chaw.
4. Cov Txheej Txheem Txog Kev Nchuav Thiab Xaus
Cov dej nchuav me me:
Cheb los yog nqus cov khoom thiab muab tso rau hauv lub thawv pov tseg kom raug.
Tsis txhob siv tshuab ziab kom tiv thaiv tau cov hmoov av tsis txhob tawg; siv cov txheej txheem ntub dej lossis cov tshuab nqus tsev uas lim HEPA.
Cov dej nchuav loj:
Khiav tawm ntawm thaj chaw thiab ua kom muaj cua nkag.
Hnav cov khoom siv tiv thaiv tus kheej (PPE) kom tsim nyog thiab tswj cov dej nchuav kom tiv thaiv nws kom tsis txhob kis mus rau lwm tus.
Siv cov khoom inert xws li xuab zeb lossis vermiculite los nqus cov tshuaj.
Pov tseg cov khoom uas tau sau los raws li cov cai hauv zos.
5. Kev Tswj Xyuas Kev Kov Tshuaj Thiab Kev Huv Si Tus Kheej
Cov Kev Txwv Kev Raug:
Ua raws li cov lus qhia ntawm Occupational Safety and Health Administration (OSHA) lossis cov cai hauv zos txog kev txwv kev raug tshuaj lom.
Kev Huv Si Tus Kheej:
Ntxuav tes kom huv si tom qab kov HEMC, tshwj xeeb tshaj yog ua ntej noj mov, haus dej, lossis haus luam yeeb.
Tsis txhob kov koj lub ntsej muag nrog cov hnab looj tes lossis tes uas muaj kab mob.
6. Kev Phom Sij Rau Kev Noj Qab Haus Huv thiab Kev Ntsuas Kev Pab Thaum Muaj Xwm Ceev
Kev ua pa:
Kev raug plua plav HEMC ntev ntev yuav ua rau ua pa tsis xis nyob.
Tsiv tus neeg mob mus rau qhov chaw uas muaj huab cua ntshiab thiab nrhiav kev kho mob yog tias cov tsos mob tseem muaj.
Kev Sib Chwv Tawv Nqaij:
Ntxuav qhov chaw raug mob nrog xab npum thiab dej.
Yog tias khaus khaus tshwm sim, nrhiav kev pab kho mob.
Kev Sib Txuas Qhov Muag:
Yaug qhov muag kom huv si nrog dej tsawg kawg yog 15 feeb.
Tshem cov tsom iav yog tias muaj thiab yooj yim ua.
Nrhiav kev kho mob yog tias qhov khaus tseem muaj.
Kev noj:
Yaug qhov ncauj nrog dej.
Tsis txhob ua kom ntuav tsuas yog cov kws kho mob hais kom ua xwb.
Yog tias noj ntau dhau, nrhiav kev kho mob.
7. Kev Phom Sij Txog Hluav Taws thiab Kev Tawg
HEMC tsis yog cov khoom kub hnyiab heev tab sis tuaj yeem kub hnyiab yog tias raug hluav taws.
Kev Ntsuas Hluav Taws Kub:
Siv dej tsuag, ua npuas dej, tshuaj qhuav, lossis carbon dioxide los tua hluav taws.
Hnav cov khoom siv tiv thaiv tag nrho, suav nrog lub tshuab ua pa uas muaj qhov chaw cia khoom (SCBA), thaum tua hluav taws uas muaj HEMC.
Tsis txhob siv cov dej uas muaj zog heev, uas yuav ua rau hluav taws kis tau.
8. Kev Ceev Faj Ib puag ncig
Tsis txhob muab tso rau hauv ib puag ncig:
Tiv thaiv kom tsis txhob muaj HEMC tso tawm rau hauv ib puag ncig, tshwj xeeb tshaj yog rau hauv cov dej, vim nws tuaj yeem cuam tshuam rau cov tsiaj hauv dej.
Kev Pov Tseg:
Pov tseg HEMC raws li cov cai hauv zos, xeev, thiab tsoomfwv tebchaws.
Tsis txhob muab pov tseg rau hauv cov dej tsis tau kev kho kom zoo.
9. Cov Ntaub Ntawv Txog Kev Cai Lij Choj
Kev Sau Npe thiab Kev Faib Tawm:
Xyuas kom tseeb tias cov thawv HEMC tau muab daim ntawv lo rau kom raug raws li cov qauv kev cai lij choj.
Kawm paub txog Daim Ntawv Qhia Txog Kev Nyab Xeeb (SDS) thiab ua raws li nws cov lus qhia.
Kev Thauj Mus Los:
Ua raws li cov cai rau kev thauj HEMC, xyuas kom meej tias cov thawv raug kaw thiab ruaj ntseg.
10. Kev Kawm thiab Kev Kawm Ntawv
Kev Kawm Txuj Ci rau Cov Neeg Ua Haujlwm:
Muab kev cob qhia txog kev tuav, khaws cia, thiab pov tseg HEMC kom raug.
Xyuas kom cov neeg ua haujlwm paub txog tej yam txaus ntshai thiab tej yam yuav tsum tau ceev faj.
Cov Txheej Txheem Thaum Muaj Xwm Ceev:
Tsim thiab sib txuas lus cov txheej txheem thaum muaj xwm txheej ceev rau kev nchuav, kev xau, thiab kev raug.
Ua kev cob qhia tsis tu ncua kom paub tseeb tias muaj kev npaj txhij.
11. Kev Ceev Faj Txog Cov Khoom Tshwj Xeeb
Kev Pheej Hmoo Tshwj Xeeb rau cov qauv tshuaj:
Nyob ntawm seb cov qauv thiab qhov concentration ntawm HEMC, tej zaum yuav tsum tau ceev faj ntxiv.
Saib cov lus qhia tshwj xeeb ntawm cov khoom thiab cov lus qhia ntawm cov chaw tsim khoom.
Cov Lus Qhia Tshwj Xeeb rau Daim Ntawv Thov:
Hauv cov tshuaj, xyuas kom meej tias HEMC yog qib tsim nyog rau kev noj lossis txhaj tshuaj.
Thaum tsim kho, yuav tsum ceev faj txog cov hmoov av uas tsim tawm thaum lub sijhawm sib tov thiab siv.
Los ntawm kev ua raws li cov kev ceev faj kev nyab xeeb no, cov kev pheej hmoo cuam tshuam nrog kev siv hydroxyethyl methylcellulose tuaj yeem raug txo qis heev. Kev ua kom muaj ib puag ncig ua haujlwm muaj kev nyab xeeb tsis yog tsuas yog tiv thaiv cov neeg ua haujlwm xwb tab sis kuj tseem tswj hwm kev ncaj ncees ntawm cov khoom thiab ib puag ncig ib puag ncig.
Lub sijhawm tshaj tawm: Tsib Hlis-31-2024