1. Taw qhia
Methyl hydroxyethyl cellulose (MHEC), tseem hu ua hydroxyethyl methyl cellulose (HEMC), yog dej-soluble nonionic cellulose ether. MHEC yog ib tug semi-synthetic polymer tsim los ntawm cov tshuaj tiv thaiv ntawm ntuj cellulose nrog methanol thiab ethylene oxide. Vim nws lub cev thiab tshuaj lom neeg tshwj xeeb, MHEC tau siv dav hauv ntau lub lag luam.
2. Cov qauv tshuaj thiab cov yam ntxwv
MHEC muaj methoxy thiab hydroxyethoxy pawg nyob rau hauv nws cov qauv molecular, uas ua rau nws muaj dej solubility zoo thiab ruaj khov tshuaj. Kev taw qhia ntawm cov pab pawg no ua rau nws muaj cov thickening zoo, gelling, ncua kev kawm ntawv, dispersion thiab wetting zog nyob rau hauv txawv kub thiab pH tej yam kev mob. Cov yam ntxwv tshwj xeeb ntawm MHEC suav nrog:
Thickening nyhuv: MHEC tuaj yeem ua kom cov viscosity ntawm cov tshuaj aqueous, ua rau nws ua kom cov thickener zoo heev.
Kev tuav dej: MHEC muaj peev xwm tuav tau dej zoo heev thiab tuaj yeem tiv thaiv dej evaporation zoo.
Cov cuab yeej ua yeeb yaj kiab: MHEC tuaj yeem tsim cov yeeb yaj kiab muaj zog, pob tshab thiab ua kom lub zog tensile ntawm cov khoom nto.
Emulsification thiab suspension stability: MHEC tuaj yeem siv los txhim kho kev ncua thiab emulsions.
Compatibility: MHEC muaj kev sib raug zoo thiab tuaj yeem siv nrog ntau yam khoom ntxiv.
3. Kev siv MHEC hauv cov khoom siv hauv tsev
Qhuav mortar:
Thickener thiab dej retainer: Hauv mortar qhuav, MHEC feem ntau yog siv los ua cov thickener thiab cov dej tuav kom txhim kho kev ua haujlwm, adhesion thiab tiv thaiv cov khoom ntawm cov mortar. Nws txhim kho cov kev ua haujlwm ntawm cov tshuaj khib nyiab los ntawm cov thickening kom ruaj khov thaum siv. Nyob rau tib lub sijhawm, nws cov dej tuav tau zoo tuaj yeem tiv thaiv cov dej tsis txaus thiab ua kom muaj dej txaus ntawm cov tshuaj khib nyiab.
Txhim kho kev tsim kho kev ua haujlwm: MHEC tuaj yeem txhim kho cov viscosity ntub dej thiab cov khoom tiv thaiv sagging ntawm mortar, thiab txhim kho kev tsim kho thiab kev ua haujlwm zoo.
Pobzeb nplaum:
Txhim kho adhesion: Hauv pobzeb nplaum, MHEC txhim kho adhesion thiab anti-sagging zog, tso cai rau cov vuas kom ruaj khov rau phab ntsa lossis hauv pem teb.
Txhim kho kev tsim kho: Nws tuaj yeem txuas ntxiv lub sijhawm qhib thiab sijhawm hloov kho, muab kev tsim kho yooj yim.
Putty hmoov:
Txhim kho cov dej tuav: MHEC ua kom cov dej tuav hauv cov hmoov putty kom tsis txhob tawg thiab hmoov thaum lub sij hawm ziab.
Txhim kho kev ua haujlwm: Txhim kho qhov kev ua haujlwm ntawm cov hmoov putty los ntawm thickening.
Self-leveling cov ntaub ntawv hauv pem teb:
Tswj fluidity: MHEC tuaj yeem kho qhov fluidity thiab viscosity ntawm tus kheej-leveling cov ntaub ntawv hauv pem teb kom ntseeg tau tias hauv pem teb yog tiaj thiab du.
4. Kev thov ntawm MHEC hauv kev lag luam txheej
Cov xim pleev xim rau dej:
Thickening thiab stabilization: Hauv cov xim pleev xim dej, MHEC ua cov thickener thiab stabilizer los txhim kho qhov kev ncua thiab kev ruaj ntseg ntawm cov xim thiab tiv thaiv cov sedimentation ntawm pigments thiab fillers.
Txhim kho rheology: Nws kuj tuaj yeem kho rheology ntawm cov xim, txhim kho brushability thiab flatness.
Latex xim:
Txhim kho cov dej tuav thiab ua cov yeeb yaj kiab: MHEC ua kom cov dej tuav thiab cov yeeb yaj kiab tsim cov khoom ntawm cov xim latex thiab txhim kho cov kev ua haujlwm ntawm cov xim pleev xim.
5. Daim ntawv thov ntawm MHEC hauv cov roj drilling
Drilling kua:
Txhim kho viscosity thiab stability: Nyob rau hauv cov roj drilling kua, MHEC txhim kho cov viscosity thiab stability ntawm drilling kua, pab nqa laum cuttings, thiab tiv thaiv zoo phab ntsa vau.
Txo qhov pom tsis pom: Nws cov dej tuav tau tuaj yeem txo qhov pom tsis pom thiab tiv thaiv kev tsim kev puas tsuaj.
Cov kua dej tiav:
Lubrication thiab tu: MHEC yog siv los ua tiav cov kua dej los txhim kho lubricity thiab tu lub peev xwm ntawm cov kua.
6. Kev thov ntawm MHEC hauv kev lag luam zaub mov
Khoom noj khoom haus thickener:
Rau cov khoom noj siv mis thiab dej haus: MHEC tuaj yeem siv los ua cov thickener hauv cov khoom noj siv mis thiab dej haus los txhim kho saj thiab ruaj khov.
Stabilizer:
Rau jelly thiab paj npleg: MHEC yog siv los ua kom ruaj khov hauv cov khoom noj xws li jelly thiab paj npleg los txhim kho kev ntxhib los mos thiab qauv.
7. Kev siv MHEC hauv tshuaj thiab tshuaj pleev ib ce
Tshuaj:
Tablet binders thiab tswj kev tso tawm cov neeg sawv cev: Hauv cov tshuaj, MHEC yog siv los ua cov ntawv khi thiab tswj kev tso tawm rau cov ntsiav tshuaj los tswj cov tshuaj tso tawm.
Tshuaj pleev ib ce:
Lotions thiab cream: MHEC yog siv los ua cov thickener thiab emulsion stabilizer nyob rau hauv cov tshuaj pleev ib ce, thiab yog siv nyob rau hauv cov tshuaj pleev ib ce, cream thiab lwm yam khoom los txhim kho cov kev ntxhib los mos thiab stability ntawm cov khoom.
8. Kev thov ntawm MHEC hauv kev lag luam papermaking
Ntawv txheej:
Txhim kho cov txheej txheem kev ua tau zoo: MHEC yog siv rau hauv cov txheej txheem txheej ntawv ua cov thickener thiab nplaum los txhim kho qhov smoothness ntawm daim ntawv thiab luam ntawv kev ua tau zoo.
Slurry additive:
Txhim kho daim ntawv muaj zog: Ntxiv MHEC rau papermaking slurry tuaj yeem txhim kho lub zog thiab dej tsis kam ntawm daim ntawv.
9. Qhov zoo thiab qhov tsis zoo ntawm MHEC
Qhov zoo:
Versatility: MHEC muaj ntau yam haujlwm xws li thickening, dej tuav, ncua kev kawm ntawv, emulsification, thiab lwm yam, thiab muaj ntau yam kev siv.
Ib puag ncig tus phooj ywg: MHEC yog cov khoom siv biodegradable nrog tsawg dua ib puag ncig.
Muaj zog stability: Nws qhia tau hais tias zoo stability nyob rau hauv txawv pH thiab kub tej yam kev mob.
Qhov tsis zoo:
Tus nqi siab: Piv nrog rau qee cov tshuaj thickeners, cov nqi tsim khoom ntawm MHEC yog siab dua.
Kev sib raug zoo nrog qee yam tshuaj: Hauv qee cov qauv, MHEC tej zaum yuav muaj teeb meem kev sib raug zoo nrog qee yam tshuaj.
Vim nws cov khoom zoo ntawm lub cev thiab tshuaj lom neeg, methyl hydroxyethyl cellulose (MHEC) tau siv dav hauv ntau lub lag luam xws li kev tsim kho, txheej, roj av, khoom noj khoom haus, tshuaj thiab papermaking. Raws li lub thickener, dej retainer, binder thiab stabilizer, nws muab kev txhawb nqa tseem ceeb rau cov khoom thiab cov txheej txheem hauv ntau qhov chaw. Txawm li cas los xij, hauv kev siv tswv yim, nws txoj kev sib raug zoo nrog lwm cov khoom xyaw thiab cov nqi yuav tsum tau txiav txim siab. Nyob rau hauv lub neej yav tom ntej, nrog rau kev nce qib ntawm kev siv tshuab thiab kev hloov pauv hauv kev xav tau ntawm kev ua lag luam, thaj chaw thov ntawm MHEC tuaj yeem nthuav dav ntxiv.
Post lub sij hawm: Jun-21-2024