Tiantai Cellulose Co., Ltd yog Hydroxypropyl methyl cellulose HPMC chaw tsim tshuaj paus tsum Hoobkas tsim khoom Tuam Tshoj, nrog nws cov khoom zoo lub npe QualiCell® Cellulose ethers.
Saib sai ntawm hydroxypropyl methylcellulose HPMC
Ib, kev siv tseem ceeb ntawm hydroxypropyl methyl cellulose yog dab tsi?
HPMC tau dav siv hauv cov khoom siv hauv tsev, txheej txheej, hluavtaws cob, ceramics, tshuaj, khoom noj khoom haus, textile, kev ua liaj ua teb, tshuaj pleev ib ce, luam yeeb thiab lwm yam lag luam. HPMC tuaj yeem muab faib ua qib kev lag luam, qib zaub mov thiab qib tshuaj raws li nws siv.
Ob, hydroxypropyl methyl cellulose muab faib ua ob peb hom, ntawm qhov twg yog qhov txawv?
HPMC tuaj yeem muab faib ua hom tam sim (qib lus "S") thiab hom kub soluble, cov khoom siv tam sim, hauv dej txias sai sai, ploj mus hauv dej, lub sijhawm no cov kua tsis muaj viscosity, vim HPMC tsuas yog tawg hauv dej. , tsis muaj kev tawg tiag. Txog (so) rau 2 feeb, lub viscosity ntawm cov kua maj mam nce, ua kom cov kua nplaum ntshiab. Cov khoom kub soluble, hauv dej txias, tuaj yeem tawg sai sai hauv dej kub, ploj hauv dej kub, xws li kub qis rau qee qhov kub (raws li gel kub ntawm cov khoom), viscosity maj mam tshwm, kom txog rau thaum tsim cov pob tshab viscous. colloid.
Peb, hydroxypropyl methyl cellulose tov txoj kev muaj dab tsi?
1. Txhua tus qauv tuaj yeem muab ntxiv rau cov khoom siv los ntawm kev sib xyaw qhuav;
2, yuav tsum tau muab tso ncaj qha rau cov dej kub ib txwm siv, nws yog qhov zoo dua los siv cov dej txias dispersing hom, tom qab ntxiv feem ntau hauv 10-90 feeb kom thicken ( stirring, stirring, stirring)
3. Cov qauv sib txawv yog thawj zaug dispersed los ntawm nplawm nrog dej kub, thiab tom qab ntawd yaj los ntawm kev ntxiv dej txias tom qab nplawm thiab txias.
4. Yog hais tias lub caking thiab wrapping phenomenon tshwm sim thaum dissolving, nws yog vim hais tias nws yog tsis txaus los yog cov qauv zoo tib yam yog ncaj qha ntxiv rau cov dej txias. Lub sijhawm no, nws yuav tsum tau stirred sai.
5. Yog tias cov npuas raug tsim tawm thaum yaj, lawv tuaj yeem tso rau 2-12 teev (lub sijhawm tshwj xeeb yog txiav txim siab los ntawm qhov sib xws ntawm cov tshuaj) lossis tshem tawm los ntawm lub tshuab nqus tsev-extraction, pressurization thiab lwm txoj kev, thiab tus nqi tsim nyog ntawm antifoaming agent. kuj tuaj yeem ntxiv.
Plaub, yuav ua li cas yooj yim thiab intuitive los txiav txim qhov sawv los yog poob ntawm hydroxypropyl methyl cellulose?
1, whiteness, whiteness txawm tias tsis tuaj yeem txiav txim siab seb HPMC puas yog qhov zoo, thiab yog tias nws ntxiv rau hauv cov txheej txheem ntau lawm whitener, yuav cuam tshuam rau nws qhov zoo, tab sis, cov khoom zoo feem ntau yog qhov zoo.
2, fineness: HPMC fineness feem ntau 80 mesh thiab 100 mesh, 120 tsawg, qhov finer qhov zoo dua.
3, lub teeb transmittance: HPMC nyob rau hauv cov dej, tsim ib tug pob tshab colloid, pom nws lub teeb transmittance, qhov loj dua lub penetrability ntawm qhov zoo, piav insolubles tsawg nyob rau hauv, ntsug cov tshuaj tiv thaiv kettle los ntawm degrees feem ntau zoo, yuav xa ib co kab rov tav cov tshuaj tiv thaiv kettle, tab sis tsis tuaj yeem piav qhia txog cov kab hluav taws xob ntsug ntau lawm zoo dua li cov khoom siv dag, muaj ntau yam uas txiav txim siab cov khoom zoo.
4, qhov kev faib ua feem: qhov ntau dua qhov kev faib ua feem, qhov hnyav dua qhov zoo dua, feem ntau vim tias cov ntsiab lus ntawm hydroxypropyl yog siab, cov ntsiab lus hydroxypropyl yog siab, ces cov dej tuav tau zoo dua.
Tsib, hydroxypropyl methyl cellulose nyob rau hauv tus nqi ntawm putty hmoov?
HPMC nyob rau hauv qhov tseeb daim ntawv thov ntawm ntau npaum, los ntawm huab cua puag ncig, kub, lub zos calcium tshauv zoo, putty hmoov mis thiab cov neeg yuav tsum tau ntawm qhov zoo ntawm txawv, thiab muaj qhov sib txawv nyob ib ncig ntawm, feem ntau hais lus, ntawm 4-5 kg.
Rau, hydroxypropyl methyl cellulose viscosity zoo dua?
Txhob dhuav LI ME NYUAM POV THAWJ TIAG TIAG 100 XYOO OK, YUAV TSUM PAUB TIAS MORTAR YOG IB TUG TUG ME NYUAM, Xav 150 XYOO TUAJ SAIB XYUAS TUAJ SIV, thiab, HPMC lub luag haujlwm tseem ceeb tshaj yog dej tuav, tom ntej no yog thickening. Nyob rau hauv cov hmoov nplej, tsuav yog cov dej tuav tau zoo, qhov viscosity tsawg (7-8), kuj tseem ua tau, ntawm chav kawm, qhov viscosity loj dua, cov txheeb ze dej tuav tau zoo dua, thaum lub viscosity ntau dua 100,000. , lub viscosity muaj me ntsis cuam tshuam rau cov dej tuav.
Xya, dab tsi yog qhov kev qhia tseem ceeb ntawm hydroxypropyl methyl cellulose?
Cov ntsiab lus ntawm Hydroxypropyl
Methyl cov ntsiab lus
viscosity
tshauv
qhuav poob phaus
Yim, dab tsi yog cov ntaub ntawv tseem ceeb ntawm hydroxypropyl methyl cellulose?
HPMC cov ntaub ntawv tseem ceeb: refined paj rwb, chloromethane, propylene oxide, lwm yam raw khoom, ntsiav tshuaj alkali, acid toluene.
Cuaj, hydroxypropyl methyl cellulose nyob rau hauv daim ntawv thov ntawm putty hmoov, lub luag hauj lwm tseem ceeb, seb tshuaj?
Hauv cov hmoov putty, nws plays peb lub luag haujlwm: thickening, dej tuav thiab kev tsim kho. Thickening, cellulose yuav thickened mus ua si ncua kev kawm ntawv, thiaj li hais tias cov kev daws teeb meem nyob rau hauv lub uniform nce thiab nqis tib lub luag hauj lwm, anti ntws hanging. Kev tuav dej: ua kom cov hmoov qhuav qhuav maj mam, pab cov hmoov tshauv calcium cov tshuaj tiv thaiv hauv qab dej. Kev tsim kho: Cellulose muaj cov nyhuv lubricating, tuaj yeem ua cov hmoov putty muaj kev tsim kho zoo. HPMC tsis koom nrog cov tshuaj tiv thaiv, tsuas yog ua lub luag haujlwm pabcuam.
Hydroxypropyl methyl cellulose yog non-ionic cellulose ether, ces dab tsi yog non-ionic?
Feem ntau hais lus, cov tshuaj inert tsis koom nrog cov tshuaj tiv thaiv.
CMC (carboxymethyl cellulose) belongs rau cationic cellulose, yog li ntsib grey calcium yuav ua taum curd slag.
11. Lub gel kub ntawm hydroxypropyl methylcellulose cuam tshuam txog dab tsi?
Lub gel kub ntawm HPMC muaj feem xyuam rau nws cov ntsiab lus methoxy. Qhov qis dua cov ntsiab lus methoxy, qhov kub ntawm gel ntau dua.
Kaum ob, putty hmoov hmoov thiab hydroxypropyl methyl cellulose tsis muaj kev sib raug zoo?
Nws tseem ceeb!! HPMC yog dej tuav tsis zoo, yuav ua rau hmoov.
13. Dab tsi yog qhov sib txawv ntawm cov dej txias tam sim thiab cov kua dej kub ntawm hydroxypropyl methyl cellulose hauv cov txheej txheem tsim khoom?
HPMC dej txias soluble hom yog tom qab glyoxal nto kho, nyob rau hauv cov dej txias sai sai dispersed, tab sis tsis tshua yaj, viscosity, yog yaj. Lub tshav kub-soluble hom yog tsis nto kho nrog glyoxal. Lub ntim ntawm glyoxal yog loj, dispersion yog ceev, tab sis lub viscosity yog qeeb, lub ntim yog me me, ntawm qhov tsis tooj.
14, hydroxypropyl methyl cellulose tsw yog yuav ua li cas rov qab lub luag haujlwm?
HPMC ua los ntawm cov txheej txheem hnyav yog ua los ntawm toluene thiab isopropyl cawv ua hnyav. Yog tias ntxuav tsis zoo, yuav muaj qee qhov seem saj. (Neutralization rov qab yog cov txheej txheem tseem ceeb ntawm tsw)
15, kev siv sib txawv, yuav ua li cas xaiv txoj cai hydroxypropyl methyl cellulose?
Putty hmoov: kev tuav dej siab, kev tsim kho yooj yim (qib pom zoo: 7010N)
Ordinary cement based mortar: high water retention, high temperature resistance, instantaneous viscosity (qib pom zoo: HPK100M)
Daim ntawv thov ntawm lub tsev kua nplaum: cov khoom tam sim, siab viscosity. (Hom pom zoo: HPK200MS)
Gypsum mortar: siab dej tuav, nruab nrab thiab qis viscosity, instantaneous viscosity (qib pom zoo: HPK600M)
16, hydroxypropyl methyl cellulose yog dab tsi?
HPMC lossis MHPC alias hydroxypropyl methyl cellulose, cellulose hydroxypropyl methyl ether.
Kaum xya, hydroxypropyl methyl cellulose nyob rau hauv daim ntawv thov ntawm putty hmoov, putty hmoov npuas yog vim li cas?
HPMC nyob rau hauv putty hmoov, ua si peb lub luag hauj lwm ntawm thickening, dej tuav thiab kev tsim kho, yog vim li cas rau npuas:
1. Ntxiv dej ntau dhau lawm.
2. Hauv qab tsis qhuav, nyob rau sab saum toj ntawm lwm txheej ntawm scraping, kuj yooj yim rau npuas.
Kaum yim, hydroxypropyl methyl cellulose thiab MC yog qhov txawv:
MC yog methylcellulose, uas yog ua los ntawm refined paj rwb tom qab alkali kev kho mob thiab methane chloride ua etherification tus neeg saib xyuas los ntawm ib tug series ntawm cov tshuaj tiv thaiv ua cellulose ether. Feem ntau, cov degree ntawm kev hloov pauv yog 1.6-2.0, thiab cov solubility ntawm cov qib sib txawv ntawm kev hloov pauv kuj txawv, uas yog cov tsis-ionic cellulose ether.
(1) Cov dej tuav ntawm methyl cellulose nyob ntawm nws qhov sib ntxiv, viscosity, particle fineness thiab dissolution ceev. Feem ntau, yog hais tias tus nqi ntxiv yog loj, lub fineness yog me me thiab lub viscosity loj, cov dej tuav tus nqi yog siab. Tus nqi ntxiv muaj qhov cuam tshuam zoo rau cov dej tuav tus nqi, thiab cov viscosity tsis cuam tshuam nrog cov dej tuav tus nqi. Lub dissolution ceev feem ntau yog nyob ntawm qhov chaw hloov kho ntawm cellulose hais thiab particle fineness. Hauv cov cellulose saum toj no ether methyl cellulose thiab hydroxypropyl methyl cellulose dej tuav tus nqi siab dua.
(2) Methyl cellulose tuaj yeem yaj hauv dej txias, dej kub dissolution yuav ntsib teeb meem, nws cov tshuaj aqueous nyob rau hauv thaj tsam ntawm pH = 3-12 yog ruaj khov heev, thiab cov hmoov txhuv nplej siab, thiab ntau surfactant compatibility yog qhov zoo, thaum kub nce mus txog qhov kub thiab txias. gelation kub, gelation tshwm sim yuav tshwm sim.
(3) Qhov kev hloov ntawm qhov kub thiab txias yuav cuam tshuam rau cov dej tuav tus nqi ntawm methyl cellulose, feem ntau qhov kub thiab txias, qhov dej khaws cia tsis zoo. Yog hais tias lub mortar kub tshaj 40 degrees, cov dej tuav ntawm methyl cellulose yuav loj heev, cuam tshuam rau kev tsim kho ntawm mortar.
(4) Methyl cellulose muaj kev cuam tshuam rau kev tsim kho thiab adhesion ntawm mortar. Ntawm no, qhov adhesion yog hais txog lub nplaum nplaum ntawm cov neeg ua haujlwm daub cuab tam thiab cov phab ntsa substrate, uas yog, shear resistance ntawm lub mortar. Cov cuab yeej nplaum yog loj, shear resistance ntawm mortar yog loj, thiab lub zog yuav tsum tau los ntawm cov neeg ua hauj lwm nyob rau hauv tus txheej txheem ntawm kev siv kuj loj, yog li cov khoom siv ntawm mortar yog tsis zoo.
Post lub sij hawm: Sep-07-2022