Hydroxypropyl methyl cellulose HPMC feem ntau muaj peb viscosity, HPMC-100000, HPMC-150000, thiab HPMC-200000 viscosity. Feem ntau hais lus, hydroxypropyl methyl cellulose nrog lub viscosity ntawm 100,000 feem ntau yog siv los tsim cov hmoov tha xim sab hauv thiab sab nrauv phab ntsa. Cellulose muaj viscosity ntawm 200,000 thiab siv rau hauv cov khoom siv hauv tsev xws li mortar qhuav, yooj yim pob zeb av nkos, diatom av nkos, thiab phab ntsa npog. Cov khoom muaj cov dej tuav zoo, cov nyhuv thickening zoo, ruaj khov zoo thiab tus nqi tsim nyog.
Hydroxypropyl methylcellulose HPMC yog dav siv nyob rau hauv lub tsev cov ntaub ntawv kev lag luam. Ib tug loj npaum li cas ntawm cellulose yuav siv tau raws li ib tug retarder, dej retaining agent, thickener thiab binder. Cellulose ether plays lub luag haujlwm tseem ceeb hauv cov khoom sib xyaw qhuav zoo tib yam, kev ua haujlwm siab sab nrauv phab ntsa rwb thaiv tsev mortar, tus kheej-leveling mortar, qhuav hmoov plastering nplaum, ceramic pobzeb tsev cog khoom qhuav hmoov mortar, kev ua haujlwm siab lub tsev putty, tawg-resistant sab hauv thiab sab nrauv phab ntsa putty, thiab lwm yam., waterproof qhuav-mix mortar, gypsum plaster, scraping whitening agent, nyias-txheej pob qij txha thiab lwm yam khoom siv. Lawv muaj kev cuam tshuam loj heev rau kev tuav dej, dej yuav tsum tau ua, suab nrov, retarding thiab workability ntawm stucco systems. Feem ntau siv cellulose ethers hauv kev tsim kho xws li HEC, HPMC, CMC, PAC, MHEC, thiab lwm yam.
Nonionic dej-soluble cellulose ethers yog cov khoom siv hauv tsev zoo ntxiv vim tias lawv cov khoom sib txuas, kev ruaj ntseg dispersion, thiab dej tuav lub peev xwm. HPMC, MC los yog EHEC yog siv nyob rau hauv feem ntau cement-based los yog gypsum siv, xws li masonry mortar, cement mortar, cement txheej, gypsum, cementitious sib tov thiab emulsion putty, thiab lwm yam, uas tuaj yeem txhim kho qhov tawg ntawm cov cement lossis xuab zeb thiab txhim kho zoo heev. adhesion, uas yog ib qho tseem ceeb heev rau plaster, pobzeb cement thiab putty. Rau cov cement, HEC tsis yog tsuas yog ib qho retarder xwb, tab sis kuj yog ib tus neeg saib xyuas dej. HEHPC kuj muaj lub hom phiaj no. Cellulose ethers feem ntau yog siv ua ke nrog gluconates nyob rau hauv mortars raws li muaj nuj nqis retarder additives. MC lossis HEC thiab CMC feem ntau yog siv los ua ib feem ntawm cov ntawv ntsa. Nruab nrab lossis siab viscosity cellulose ethers feem ntau yog siv rau hauv cov nplaum nplaum thiab cov khoom siv hauv tsev.
Hydroxypropyl methylcellulose HPMC cov khoom siv ua ke ntau lub cev thiab tshuaj lom neeg los ua ib yam khoom tshwj xeeb nrog ntau yam kev siv. Cov khoom sib txawv yog raws li nram no:
(1) Kev tuav dej: Nws tuaj yeem khaws cov dej noo ntawm qhov ntxeem tau xws li phab ntsa cement boards thiab cib.
(2) Film-forming zog: Nws tuaj yeem tsim cov pob tshab, tawv, mos zaj duab xis nrog cov roj zoo heev.
(3) Organic solubility: Cov khoom no yog soluble hauv qee cov kuab tshuaj organic, xws li ethanol / dej, propanol / dej, dichloroethane thiab cov kuab tshuaj muaj li ntawm ob cov kuab tshuaj organic hauv qhov tsim nyog.
(4) Thermal gelation: Thaum lub aqueous tov ntawm cov khoom no yog rhuab, nws tsim ib gel thiab hloov mus rau hauv ib tug tov tom qab txias.
(5) Kev ua haujlwm saum npoo: Muab cov dej num saum npoo av hauv kev daws kom ua tiav qhov zoo tagnrho colloidal emulsification thiab kev tiv thaiv, nrog rau theem stabilization.
(6) Suspension tus neeg sawv cev: Hydroxypropyl methylcellulose tuaj yeem tiv thaiv cov khoom ntawm qhov chaw, yog li inhibiting qhov tsim ntawm precipitates.
(7) Kev tiv thaiv colloid: Nws tuaj yeem tiv thaiv cov tee dej thiab cov khoom los ntawm coalescing lossis condensing.
(8) Adhesion: Siv los ua cov ntawv khi rau cov xim, cov khoom luam yeeb, thiab cov khoom siv ntawv, nws muaj cov haujlwm zoo heev.
(9) Dej solubility: Cov khoom no tuaj yeem yaj hauv cov dej sib txawv, thiab nws qhov siab tshaj plaws tsuas yog txwv los ntawm viscosity.
(10) Nonionic inertness: Cov khoom no yog nonionic cellulose ether thiab tsis ua ke nrog hlau ntsev los yog lwm yam ions los ua insoluble precipitates.
(11) Acid-base stability: haum rau siv nyob rau hauv pH ntau ntawm 3.0-11.0.
(12) Tasteless thiab tsw, tsis cuam tshuam los ntawm metabolism; siv los ua additives hauv zaub mov thiab tshuaj, lawv tsis metabolized hauv cov zaub mov thiab tsis muab calories.
Yog li ntawd, hydroxypropyl methylcellulose HPMC tuav txoj haujlwm tseem ceeb hauv kev tsim kho, thiab ntsuab cellulose yuav siv dav hauv kev tsim kho. Cov khoom lag luam zoo, cov nqi nyiam thiab cov kev pabcuam zoo dua yog qhov peb cov cellulose thiab latex hmoov manufacturers ib txwm ua raws. Yav Tom Ntej Hnub ua raws li kev lag luam lub tswv yim ntawm "kev ciaj sia los ntawm kev ua tau zoo, kev loj hlob los ntawm kev tshawb fawb thiab thev naus laus zis, kev ua lag luam los ntawm lub koob npe nrov, thiab kev ua tau zoo los ntawm kev tswj hwm". Peb hydroxypropyl methylcellulose, redispersible latex hmoov, thiab hydroxyethyl cellulose muab cov khoom zoo rau cov neeg siv khoom ntau.
Post lub sij hawm: Feb-02-2024