Hydroxyether methylcellose (HEMC) yog siv cov polymer hauv ntau yam lag luam, suav nrog cov tshuaj, suav nrog cov khoom siv tshuaj, khoom noj, tshuaj pleev ib ce, thiab kev tsim kho. Nws yog txaus siab rau nws cov thickening, emulsifying, zaj duab xis-ua, thiab stabilizing tej yam. Txawm hais tias nws cov ntawv thov kev loj hlob, ua kom muaj kev nyab xeeb thaum nws tuav thiab siv yog qhov tseem ceeb heev. Ntawm no yog cov kev nyab xeeb nyab xeeb rau kev siv hydroxyethy methylcellose:
1. Nkag siab cov khoom siv
HEMC yog ib pawg neeg tsis-ionic ether, ib pawg cellulose uas cov pawg hydroxyethyl thiab methyl pawg. Qhov kev hloov kho no txhim kho nws cov solubility thiab ua haujlwm. Paub txog nws cov khoom siv thiab lub cev, xws li solubility, viscosity, thiab ruaj khov, pab ua 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 hnab looj tes ua haujlwm tiv thaiv cov hnab looj tes kom tiv thaiv kev tiv thaiv daim tawv nqaij.
Siv cov khaub ncaws tiv thaiv, suav nrog lub tsho ntev thiab ris ntev, kom tsis txhob kis daim tawv nqaij.
Qhov kev tiv thaiv qhov muag:
Siv cov teeb meem kev nyab xeeb lossis ntsej muag los tiv thaiv cov hmoov av lossis txaws.
Kev tiv thaiv kev ua pa:
Yog tias tuav hemc hauv cov xim hmoov, siv cov ntsej muag plua plav lossis cov pa ua pa kom tsis txhob nqus tau cov pa.
3. Kev tuav thiab cia
Qhov cua:
Ua kom muaj qhov cua txaus hauv thaj chaw ua haujlwm kom txo cov plua plav kom tsawg.
Siv cov tso pa tawm hauv zos lossis lwm yam kev tswj hwm engineering kom ua kom huab cua ua kom pom kev txwv tsis pub dhau.
Cia:
Khaws HEMC nyob rau hauv qhov chaw txias, qhuav qhov chaw kom deb ntawm ya raws thiab tshav ntuj ncaj qha.
Khaws ntim kom nruj kom kaw kom tiv thaiv kom tsis txhob muaj paug thiab noo noo nqus.
Khaws kom deb ntawm cov tshuaj uas tsis sib xws li cov neeg muaj cov neeg muaj zog.
Zwm ceeb toom:
Zam kev tsim cov hmoov av; kov maj mam muab.
Siv cov txuj ci tsim nyog xws li kev ntub dej lossis siv cov plua av collection los txo cov pa hluav taws.
Siv kev coj ua zoo ntawm tsev kawm ntawv txhawm rau tiv thaiv kom tsis txhob muaj plua plav buildup ntawm cov chaw.
4. Txawj thiab cov txheej txheem xau
Me nchuav:
Cheb lossis nqus cov khoom thiab muab tso rau hauv cov thawv ntim khoom kom zoo.
Zam kev cheb kom qhuav los tiv thaiv cov plua plav tawg; Siv cov txheej txheem damp lossis Hepa-filtered nqus nqus tsev.
Cov Nqis Ntau:
Khiav tawm thaj tsam thiab muab cua.
Hnav PPE tsim nyog thiab muaj cov txeej los tiv thaiv nws los ntawm kis mus.
Siv cov khoom siv inert zoo li xuab zeb lossis vermiculite kom nqus cov khoom.
Muab cov khoom ntim rau cov khoom sau ua ke raws li cov cai hauv zos.
5. Kev tswj hwm tus kheej thiab kev nyiam huv
Kev Txwv Txwv:
Ua raws li kev nyab xeeb kev nyab xeeb thiab kev tswj hwm kev noj qab haus huv (OSHA) cov lus qhia lossis cov kev cai lij choj muaj feem xyuam ntsig txog qhov txwv tsis pub tshaj.
Tus kheej tu cev:
Ntxuav ob txhais tes kom huv si tom qab kov Hemc, tshwj xeeb ua ntej noj mov, haus, lossis haus luam yeeb, lossis haus luam yeeb.
Tsis txhob kov koj lub ntsej muag nrog cov hnab looj tes tsis huv lossis tes.
6. Kev noj qab haus huv txaus ntshai thiab ua ntej kev ntsuas
Inhalation:
Kev ua kom ntev ntev rau Hemc plua plav yuav ua rau muaj kev ua pa.
Txav tus neeg cuam tshuam rau huab cua ntshiab thiab nrhiav kev kho mob yog cov tsos mob pheej mob.
Daim tawv nqaij tiv toj:
Ntxuav thaj chaw cuam tshuam nrog xab npum thiab dej.
Nrhiav kev pab tswv yim kho mob yog tias kev txob taus.
Qhov muag Hu:
Yaug ob lub qhov muag kom huv si nrog dej tsawg kawg yog 15 feeb.
Tshem cov ntsiab muag hu tau yog tias tam sim no thiab yooj yim ua.
Nrhiav kev kho mob yog tias khaus khaus.
Kev noj haus:
Yaug lub qhov ncauj nrog dej.
Tsis txhob ua kom ntuav tshwj tsis yog qhia los ntawm cov neeg kho mob.
Nrhiav kev kho mob yog tias muaj ntau ntau tau noj.
7. Hluav Taws thiab tawg kev phom sij
HEMC tsis yog flammable heev tab sis tuaj yeem hlawv yog tias raug hluav taws.
Kev Ntaus Hluav Taws Kev:
Siv cov tshuaj tsuag dej, ua npuas dej, qhuav tshuaj, lossis cov pa roj carbon dioxide mus rau hluav taws kub tua hluav taws.
Hnav cov iav tiv thaiv tag nrho, suav nrog kev ua pa rau tus kheej ua pa (scba), thaum sib ntaus hluav taws cuam tshuam nrog hemc.
Zam kev siv cov dej siab ntawm cov dej, uas tuaj yeem kis tau hluav taws.
8. Kev ceev faj ib puag ncig
Zam kev khiav tawm ib puag ncig:
Tiv thaiv kev tso tawm hemc rau hauv ib puag ncig, tshwj xeeb rau hauv dej lub cev, vim tias nws tuaj yeem cuam tshuam rau lub neej muaj dej.
Pov tseg:
Pov tseg ntawm HEMC raws li hauv zos, xeev, thiab tsoomfwv cov cai.
Tsis txhob tawm mus rau hauv cov dej uas tsis muaj kev kho kom zoo.
9. Cov ntaub ntawv tswj hwm
Sau npe thiab faib tawm:
Xyuas kom meej hemc ntim tau sau npe kom raug raws li cov qauv kev tswj hwm.
Ua koj tus kheej nrog daim ntawv muaj kev nyab xeeb (SDS) thiab ua raws li nws cov txheej txheem.
Tsheb thauj mus los:
Ua raws li cov kev cai thauj Hemc, ua kom cov thawv ntim tau sib khi thiab ruaj ntseg.
10. Kev kawm thiab kev kawm
Kev Kawm Ua Haujlwm:
Muab kev cob qhia rau kev tswj kom zoo, cia, thiab pov tseg ntawm HEMC.
Xyuas kom cov neeg ua haujlwm tau paub txog cov kev phom sij muaj peev xwm thiab cov kev ceev faj tsim nyog.
Cov Txheej Txheem Ceev:
Tsim thiab sib txuas lus thaum muaj xwm txheej ceev rau cov dej nchuav, dej xau, thiab kev nthuav dav.
Ua kev xyaum ua kom muaj kev npaj tos.
11. Cov khoom-tshwj xeeb kev ceev faj
Tsim kom muaj kev pheej hmoo tshwj xeeb:
Ua raws li cov qauv tsim thiab kev xav txog HEMC, yuav tsim nyog paub ntxiv.
Tham cov lus qhia tshwj xeeb thiab cov khoom siv cov lus pom zoo.
Daim ntawv thov cov lus qhia tshwj xeeb:
Hauv cov chaw kuaj tshuaj, kom HEMC yog cov qib tsim nyog rau kev noj haus lossis txhaj.
Hauv kev tsim kho, paub txog cov plua plav tsim thaum sib tov thiab ntawv thov.
Los ntawm kev ua raws li cov kev ceev xwm kev nyab xeeb no, cov kev pheej hmoo cuam tshuam nrog kev siv hydroxyethy metylcellulose tau tsawg tsawg. Minimized. Ua kom muaj kev ua haujlwm nyab xeeb tsis tsuas yog tiv thaiv cov neeg ua haujlwm xwb tab sis tseem tswj hwm kev ncaj ncees ntawm cov khoom lag luam thiab ib puag ncig ib puag ncig.
Lub Sijhawm Post: Lub Tsib Hlis-31-2024