1. Lub ntsiab siv ntawm hydroxypropyl methyl cellulose yog dab tsi?
HPMCyog dav siv nyob rau hauv lub tsev cov ntaub ntawv, coatings, hluavtaws resins, ceramics, tshuaj, khoom noj khoom haus, textile, 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 kho mob raws li kev siv.
2. Hydroxypropyl methyl cellulose muab faib ua ntau hom, qhov txawv ntawm lawv yog dab tsi?
HPMC tuaj yeem muab faib ua tam sim (hom npe "S") thiab kub soluble, cov khoom lag luam 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 sib cais tiag tiag. Kwv yees li 2 feeb, cov viscosity ntawm cov kua maj mam nce, ua kom pom tseeb thiab nplaum gel. Thaum tshav kub kub soluble khoom, clumped nyob rau hauv dej txias, yuav sai sai disperse nyob rau hauv dej kub, ploj mus rau hauv dej kub, xws li kub poob mus rau ib tug tej yam kub thiab txias (raws li gel kub ntawm cov khoom), viscosity maj mam tshwm, kom txog rau thaum tsim pob tshab viscous colloid.
3. Yuav ua li cas txiav txim siab qhov zoo ntawm hydroxypropyl methyl cellulose yooj yim thiab intuitively?
1) whiteness, txawm tias dawb tsis tuaj yeem txiav txim siab seb HPMC puas 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 yog 80 mesh thiab 100 mesh, 120 lub hom phiaj tsawg, qhov finer qhov zoo dua.
3) Lub teeb xa hluav taws xob: HPMC hauv dej, tsim cov pob tshab pob tshab, pom nws lub teeb xa hluav taws xob, qhov loj dua qhov kev nkag mus ntawm qhov zoo, piav qhia insolubles tsawg dua sab hauv, ntsug cov tshuaj tiv thaiv kab hluav taws xob los ntawm cov degrees feem ntau zoo, yuav xa qee cov kab rov tav cov tshuaj tiv thaiv hluav taws xob, tab sis tsis tuaj yeem piav qhia txog cov kab hluav taws xob ntsug ntau lawm zoo dua li ntau cov khoom siv hluav taws xob txiav txim siab zoo.
4) kev faib ua feem: qhov loj dua qhov kev faib ua feem, qhov hnyav dua, qhov loj dua, feem ntau vim yog cov ntsiab lus siab ntawm hydroxypropyl hauv, cov ntsiab lus hydroxypropyl yog siab, cov dej tuav tau zoo dua.
4. Yuav ua li cas yog txoj kev dissolution ntawm hydroxypropyl methyl cellulose?
1) Txhua tus qauv tuaj yeem muab ntxiv rau hauv cov khoom siv los ntawm kev sib xyaw qhuav;
2) Yuav tsum tau muab tso ncaj qha rau hauv cov dej kub li qub, nws yog qhov zoo dua los siv cov dej txias dispersion, tom qab ntxiv feem ntau hauv 10-90 feeb kom thicken (do do do)
3) Cov qauv zoo tib yam tuaj yeem yaj tom qab sib tov thiab dispersing nrog dej kub thiab ntxiv dej txias tom qab nplawm thiab txias;
4) Thaum dissolving, yog qhov tshwm sim ntawm agglomerating tshwm sim, nws yog vim hais tias cov stirring tsis txaus los yog cov qauv zoo tib yam yog ncaj qha ntxiv rau hauv dej txias. Lub sijhawm no, nws yuav tsum tau stirred sai.
5) Yog tias muaj npuas tshwm sim thaum lub sijhawm tawg, lawv tuaj yeem raug tshem tawm los ntawm kev sawv ntsug li 2-12 teev (lub sijhawm tshwj xeeb nyob ntawm qhov sib xws ntawm cov tshuaj) lossis los ntawm kev nqus thiab nias, lossis los ntawm kev ntxiv tus nqi tsim nyog ntawm defoaming tus neeg sawv cev.
5 hydroxypropyl methyl cellulose nyob rau hauv lub ntim ntawm putty hmoov?
HPMC nyob rau hauv qhov tseeb daim ntawv thov ntawm tus nqi, los ntawm kev nyab xeeb ib puag ncig, kub, lub zos grey calcium zoo, putty hmoov mis thiab cov neeg yuav tsum tau ntawm qhov sib txawv zoo, thiab muaj qhov sib txawv nyob ib ncig ntawm, feem ntau ntawm 4-5 kilograms.
6. Qhov viscosity tsim nyog ntawm hydroxypropyl methyl cellulose yog dab tsi?
Putty hmoov feem ntau yog 100000 tuaj yeem, mortar yuav tsum siab dua, mus rau 150000 tsuas yog zoo, thiab HPMC yog lub luag haujlwm tseem ceeb tshaj yog dej tuav, ua raws li 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 cov viscosity ntau dua 100,000, viscosity ntawm cov dej tuav tsis ntau.
7. Cov ntaub ntawv tseem ceeb ntawm hydroxypropyl methyl cellulose yog dab tsi?
HPMCCov ntaub ntawv tseem ceeb: cov paj rwb refined, chloromethane, propylene oxide, lwm yam raw khoom, ntsiav tshuaj alkali, acid toluene.
8. Hydroxypropyl methyl cellulose nyob rau hauv daim ntawv thov ntawm putty hmoov, lub luag hauj lwm tseem ceeb, seb tshuaj?
Hauv cov hmoov putty, thickening, dej tuav thiab kev tsim kho ntawm peb txoj haujlwm. Thickening, cellulose tuaj yeem ua kom tuab rau kev ncua, yog li cov kev daws teeb meem tseem tsis sib xws nce thiab nqis lub luag haujlwm ntawm kev tiv thaiv kev khiav. Kev tuav dej: ua kom cov hmoov qhuav qhuav maj mam, pabcuam grey calcium nyob rau hauv qhov kev txiav txim ntawm cov tshuaj tiv thaiv dej. Kev tsim kho: cellulose lubrication, tuaj yeem ua cov hmoov putty muaj kev tsim kho zoo. HPMC tsis koom nrog cov tshuaj tiv thaiv kab mob, tab sis tsuas yog ua lub luag haujlwm txhawb nqa.
9 .hydroxypropyl methyl cellulose yog non-ionic cellulose ether, yog li dab tsi yog non-ionic?
Nyob rau hauv cov nqe lus ntawm layman, inert tshuaj tsis koom nyob rau hauv chemical tshuaj.
CMC (carboxymethyl cellulose) yog cationic cellulose, yog li ntsib grey calcium yuav ua taum curd residue.
10. Cov kev qhia tseem ceeb ntawm hydroxypropyl methyl cellulose yog dab tsi?
Cov ntsiab lus ntawm Hydroxypropyl
Methyl cov ntsiab lus
viscosity
tshauv
qhuav poob phaus
11. Dab tsi yog cuam tshuam rau gel kub ntawm hydroxypropyl methyl cellulose?
Lub gel kub ntawm HPMC muaj feem xyuam rau cov ntsiab lus methoxyl, qhov qis dua cov ntsiab lus methoxyl, qhov siab dua cov gel.
12 putty hmoov poob hmoov thiab hydroxypropyl methyl cellulose kev sib raug zoo?
Yog tias HPMC khaws dej tsis zoo, yuav ua rau cov hmoov av.
13 hydroxypropyl methyl cellulose nyob rau hauv daim ntawv thov ntawm putty hmoov, putty hmoov npuas yog vim li cas?
HPMC nyob rau hauv cov hmoov putty, thickening, dej tuav thiab kev tsim kho ntawm peb lub luag hauj lwm, qhov ua rau ntawm npuas:
1.) Ntxiv dej ntau dhau.
2.) Cov txheej hauv qab tsis qhuav, thiab tom qab ntawd txhuam ib txheej ntawm nws, uas kuj yooj yim rau hlwv.
14. Dab tsi yog qhov txawv ntawm cov dej txias-soluble thiab kub-soluble hydroxypropyl methyl cellulose hauv cov txheej txheem tsim khoom?
HPMC dej txias instant tov hom yog tom qab glyoxal nto kho, muab tso rau hauv dej txias sai sai dispersed, tab sis tsis tshua yaj, viscosity, yog yaj. Hom thermosoluble tsis tau raug kho nrog glyoxal. Tus nqi ntawm glyoxal yog loj, dispersion yog ceev, tab sis lub viscosity qeeb, tus nqi yog me me, ntawm qhov tsis tooj.
15. Nws yog dab tsi txog hydroxypropyl methyl cellulose tsw?
HPMC ua los ntawm cov txheej txheem hnyav yog ua los ntawm toluene thiab isopropyl cawv. Yog tias ntxuav tsis zoo, yuav muaj qee qhov seem saj. (Neutralization rov qab yog cov txheej txheem tseem ceeb rau tsw)
16. Yuav ua li cas xaiv hydroxypropyl methyl cellulose tsim nyog rau kev siv sib txawv?
Putty hmoov: siab tuav dej siab, kev tsim kho zoo sib xws (qib pom zoo: 75AX100000)
Ordinary cement-based mortar: siab dej tuav, kub tsis kam, instant viscosity (qib pom zoo: 75AX150000)
Daim ntawv thov ntawm lub tsev kua nplaum: cov khoom tam sim, siab viscosity. (pom zoo naj npawb: 75AX200000S)
Gypsum mortar: siab dej tuav, nruab nrab thiab qis viscosity, instant viscosity (qib pom zoo: 75AX75000)
17. Lub npe menyuam yaus rau hydroxypropyl methyl cellulose yog dab tsi?
HPMC lossis MHPC alias hydroxypropyl methyl cellulose, cellulose hydroxypropyl methyl ether.
18. Qhov txawv ntawm hydroxypropyl methyl cellulose thiabMC?
MC yog methyl cellulose, yog refined paj rwb tom qab alkali kev kho mob, methane chloride li etherifying tus neeg saib xyuas, los ntawm ib tug series ntawm cov tshuaj tiv thaiv thiab ua los ntawm cellulose ether, general degree ntawm kev hloov yog 1.6-2.0, txawv degree ntawm kev hloov solubility kuj txawv, belongs rau non-ionic cellulose ether.
(1) Cov dej tuav ntawm methyl cellulose nyob ntawm nws cov nyiaj ntxiv, viscosity, particle fineness thiab dissolution tus nqi. Feem ntau, qhov sib ntxiv yog qhov loj, qhov zoo me me, qhov viscosity loj, cov dej tuav tus nqi siab, qhov sib ntxiv muaj qhov cuam tshuam zoo rau cov dej tuav tus nqi, qhov viscosity thiab dej tuav tus nqi tsis qis dua qhov kev sib raug zoo, qhov kev sib cais feem ntau yog nyob ntawm qhov kev hloov kho ntawm qhov chaw thiab cov khoom zoo ntawm cov cellulose hais. Methyl cellulose thiab hydroxypropyl methyl cellulose nyob rau hauv cov saum toj no ob peb cellulose ethers muaj ntau dua dej tuav tus nqi.
(2) Methyl cellulose tuaj yeem yaj hauv dej txias, dej kub yuav nyuaj rau yaj, nws cov kua dej aqueous hauv pH = 3-12 ntau yam ruaj khov, thiab cov hmoov txhuv nplej siab, thiab lwm yam, thiab ntau cov surfactants muaj kev sib raug zoo, thaum kub txog qhov kub thiab txias, yuav muaj qhov tshwm sim gelation.
(3) Kev hloov pauv kub 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 qhov kub ntawm mortar ntau tshaj 40 degrees, cov dej tuav ntawm methyl cellulose yuav loj heev, uas cuam tshuam rau lub constructability ntawm mortar.
(4)Methyl cellulosemuaj kev cuam tshuam rau kev tsim kho thiab adhesion ntawm mortar. Lub adhesion ntawm no yog hais txog lub nplaum nplaum ntawm lub cuab yeej thiab phab ntsa substrate los ntawm tus neeg ua haujlwm, uas yog, shear resistance ntawm lub mortar. Adhesion yog loj, shear resistance ntawm mortar yog loj, lub zog yuav tsum tau los ntawm cov neeg ua hauj lwm nyob rau hauv tus txheej txheem ntawm kev siv kuj loj, thiab kev tsim kho ntawm mortar yog tsis zoo.
Lub sij hawm xa tuaj: Plaub Hlis-25-2024