1. Kev siv tseem ceeb ntawm hydroxypropyl methyl cellulose yog dab tsi?
HPMCyog siv dav hauv cov ntaub ntawv tsim kho, tshuaj pleev xim, cov khoom siv hluavtaws, cov khoom siv av nplaum, tshuaj, khoom noj, 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 kev kho mob raws li kev siv.
2. Hydroxypropyl methyl cellulose muab faib ua ntau hom, qhov txawv ntawm lawv yog dab tsi?
HPMC muaj peev xwm muab faib ua cov khoom siv tam sim ntawd (hom tom qab "S") thiab cov khoom siv kub yaj, cov khoom siv tam sim ntawd, hauv dej txias sai sai yaj, ploj mus rau hauv dej, lub sijhawm no cov kua tsis muaj viscosity, vim HPMC tsuas yog yaj hauv dej, tsis muaj kev yaj tiag tiag. Kwv yees li 2 feeb, qhov viscosity ntawm cov kua maj mam nce, tsim cov gel ntshiab thiab nplaum. Cov khoom siv kub yaj, sib sau ua ke hauv dej txias, tuaj yeem yaj sai sai hauv dej kub, ploj mus rau hauv dej kub, xws li qhov kub poob rau qee qhov kub (raws li qhov kub ntawm cov khoom gel), viscosity maj mam tshwm sim, kom txog thaum tsim cov colloid viscous pob tshab.
3. Yuav ua li cas thiaj txiav txim tau qhov zoo ntawm hydroxypropyl methyl cellulose yooj yim thiab intuitively?
1) qhov dawb, txawm hais tias qhov dawb tsis tuaj yeem txiav txim siab seb HPMC puas zoo, thiab yog tias ntxiv cov tshuaj dawb rau hauv cov txheej txheem ntau lawm, nws yuav cuam tshuam rau nws qhov zoo, tab sis cov khoom zoo feem ntau yog qhov dawb.
2) qhov zoo: HPMC qhov zoo feem ntau yog 80 mesh thiab 100 mesh, tsawg dua 120, qhov zoo dua qhov zoo dua.
3) Lub teeb kis tau: HPMC hauv dej, tsim cov pob tshab colloid, pom nws lub teeb kis tau, qhov loj dua qhov nkag mus ntawm qhov zoo, piav qhia cov insolubles tsawg dua sab hauv, lub lauj kaub tshuaj tiv thaiv ntsug feem ntau zoo los ntawm degrees, yuav xa qee qhov tshuaj tiv thaiv kab rov tav, tab sis tsis tuaj yeem piav qhia qhov zoo ntawm lub lauj kaub tshuaj tiv thaiv ntsug zoo dua li qhov tsim cov lauj kaub dag, muaj ntau yam uas txiav txim siab qhov zoo ntawm cov khoom.
4) kev faib ua feem: qhov loj dua qhov sib piv, qhov hnyav dua qhov zoo dua, dua li qhov loj, feem ntau vim yog cov ntsiab lus siab ntawm hydroxypropyl sab hauv, cov ntsiab lus hydroxypropyl siab, cov dej khaws cia zoo dua.
4. Cov txheej txheem yaj ntawm hydroxypropyl methyl cellulose yog dab tsi?
1) Txhua tus qauv tuaj yeem ntxiv rau hauv cov khoom siv los ntawm txoj kev sib tov qhuav;
2) Yuav tsum tau ntxiv ncaj qha rau hauv cov dej kub ib txwm, nws zoo dua los siv cov dej txias dispersion, tom qab ntxiv feem ntau hauv 10-90 feeb kom tuab (txhob do do)
3) Cov qauv ib txwm muaj peev xwm yaj tau tom qab sib tov thiab tawg nrog dej kub thiab ntxiv dej txias tom qab do thiab txias;
4) Thaum yaj, yog tias qhov tshwm sim ntawm agglomerating tshwm sim, nws yog vim tias qhov kev nplawm tsis txaus lossis tus qauv ib txwm raug ntxiv ncaj qha rau hauv dej txias. Lub sijhawm no, nws yuav tsum tau do sai sai.
5) Yog tias muaj cov npuas tshwm sim thaum lub sijhawm yaj, lawv tuaj yeem tshem tawm los ntawm kev sawv rau 2-12 teev (lub sijhawm tshwj xeeb nyob ntawm qhov sib xws ntawm cov tshuaj) lossis los ntawm kev nqus tsev thiab nias, lossis los ntawm kev ntxiv cov tshuaj defoaming kom tsim nyog.
5 hydroxypropyl methyl cellulose nyob rau hauv qhov ntim ntawm putty hmoov?
HPMC nyob rau hauv daim ntawv thov tiag tiag ntawm qhov ntau, los ntawm huab cua ib puag ncig, kub, qhov zoo ntawm cov calcium grey hauv zos, cov mis hmoov putty thiab cov neeg siv khoom xav tau ntawm qhov zoo sib txawv, thiab muaj qhov sib txawv nyob ib puag ncig, feem ntau ntawm 4-5 kilograms.
6. Qhov viscosity ntawm hydroxypropyl methyl cellulose yog dab tsi?
Feem ntau, cov hmoov putty muaj 100,000 lub thoob, qhov yuav tsum tau siv cov tshuaj mortar siab dua, txog li 150,000 lub thoob zoo xwb, thiab HPMC tseem ceeb dua yog qhov khaws dej, ua raws li qhov tuab. Hauv cov hmoov putty, tsuav yog qhov khaws dej zoo, qhov viscosity qis (7-8), nws kuj ua tau, tau kawg, qhov viscosity loj dua, qhov khaws dej zoo dua, thaum qhov viscosity ntau dua 100,000, qhov viscosity ntawm qhov khaws dej tsis ntau.
7. Cov khoom siv tseem ceeb ntawm hydroxypropyl methyl cellulose yog dab tsi?
HPMCCov ntaub ntawv tseem ceeb: paj rwb zoo, chloromethane, propylene oxide, lwm yam ntaub ntawv raw, ntsiav tshuaj alkali, acid toluene.
8. Hydroxypropyl methyl cellulose nyob rau hauv daim ntawv thov ntawm putty hmoov, lub luag haujlwm tseem ceeb, seb puas yog tshuaj lom neeg?
Hauv cov hmoov putty, thickening, dej khaws cia thiab kev tsim kho muaj peb lub luag haujlwm. Thickening, cellulose tuaj yeem thickened rau suspension, yog li cov tshuaj tseem sib xws nce thiab nqis lub luag haujlwm ntawm anti-flow dai. Dej khaws cia: ua kom cov hmoov putty qhuav qeeb qeeb, pab calcium grey hauv kev ua haujlwm ntawm dej tshuaj tiv thaiv. Kev tsim kho: cellulose lubrication, tuaj yeem ua rau cov hmoov putty muaj kev tsim kho zoo. HPMC tsis koom nrog hauv kev tshuaj tiv thaiv, tab sis tsuas yog ua lub luag haujlwm txhawb nqa.
9 .hydroxypropyl methyl cellulose yog non-ionic cellulose ether, yog li non-ionic yog dab tsi?
Hauv cov lus yooj yim, cov tshuaj inert tsis koom nrog cov tshuaj lom neeg.
CMC (carboxymethyl cellulose) yog cationic cellulose, yog li ntsib grey calcium yuav dhau los ua taum curd residue.
10. Cov cim qhia tseem ceeb ntawm hydroxypropyl methyl cellulose yog dab tsi?
Cov ntsiab lus ntawm Hydroxypropyl
Cov ntsiab lus ntawm methyl
viscosity
tshauv
Kev poob phaus qhuav
11. Dab tsi muaj feem cuam tshuam rau qhov kub ntawm hydroxypropyl methyl cellulose?
Qhov kub ntawm gel ntawm HPMC muaj feem cuam tshuam nrog cov ntsiab lus methoxyl, qhov qis dua cov ntsiab lus methoxyl, qhov siab dua qhov kub ntawm gel.
12 putty hmoov poob hmoov thiab hydroxypropyl methyl cellulose kev sib raug zoo?
Yog tias HPMC tsis khaws dej zoo, yuav ua rau cov hmoov av.
13 hydroxypropyl methyl cellulose nyob rau hauv daim ntawv thov ntawm putty hmoov, putty hmoov npuas yog dab tsi yog vim li cas?
HPMC nyob rau hauv cov hmoov putty, qhov thickening, dej khaws cia thiab kev tsim kho ntawm peb lub luag haujlwm, qhov ua rau ntawm lub npuas:
1.) Ntxiv dej ntau dhau.
2.) Txheej hauv qab tsis qhuav, thiab tom qab ntawd khawb ib txheej rau ntawm nws, uas kuj yooj yim rau blister.
14. Qhov txawv ntawm cov hydroxypropyl methyl cellulose uas yaj tau sai hauv dej txias thiab cov hydroxypropyl methyl cellulose uas yaj tau thaum kub hauv cov txheej txheem ntau lawm yog dab tsi?
HPMC dej txias hom tshuaj tam sim ntawd yog tom qab kho qhov chaw glyoxal, muab tso rau hauv dej txias sai sai dispersed, tab sis tsis yaj tiag tiag, viscosity nce, yog yaj. Hom thermosoluble tsis tau kho qhov chaw nrog glyoxal. Tus nqi ntawm glyoxal yog loj, qhov dispersion yog ceev, tab sis viscosity yog qeeb, tus nqi yog me me, ntawm qhov tsis sib xws.
15. Nws yog dab tsi txog hydroxypropyl methyl cellulose tsw?
HPMC tsim los ntawm txoj kev yaj yog ua los ntawm toluene thiab isopropyl cawv. Yog tias ntxuav tsis zoo heev, yuav muaj qee qhov saj seem. (Kev rov qab ua kom tsis muaj ntxhiab yog qhov txheej txheem tseem ceeb rau kev tsw ntxhiab)
16. Yuav ua li cas xaiv cov hydroxypropyl methyl cellulose uas tsim nyog rau ntau yam kev siv sib txawv?
Hmoov putty: qhov yuav tsum tau khaws dej ntau, kev sib raug zoo ntawm kev tsim kho (qib pom zoo: 75AX100000)
Cov cement-based mortar: khaws dej tau zoo, tiv taus kub siab, viscosity tam sim ntawd (qib pom zoo: 75AX150000)
Kev siv cov kua nplaum rau tsev: cov khoom siv tau sai, viscosity siab. (Cov hom lag luam pom zoo: 75AX200000S)
Gypsum mortar: khaws dej tau zoo, viscosity nruab nrab thiab qis, viscosity tam sim ntawd (qib pom zoo: 75AX75000)
17. Lub npe menyuam yaus rau hydroxypropyl methyl cellulose yog dab tsi?
HPMC los yog MHPC alias hydroxypropyl methyl cellulose, cellulose hydroxypropyl methyl ether.
18. Qhov txawv ntawm hydroxypropyl methyl cellulose thiabMC?
MC yog methyl cellulose, yog paj rwb ua kom zoo tom qab kho alkali, methane chloride ua tus neeg sawv cev etherifying, los ntawm ntau qhov kev tshuaj tiv thaiv thiab ua los ntawm cellulose ether, qib dav dav ntawm kev hloov pauv yog 1.6-2.0, qib sib txawv ntawm kev hloov pauv solubility kuj txawv, koom nrog cov non-ionic cellulose ether.
(1) Qhov khaws dej ntawm methyl cellulose nyob ntawm nws qhov ntxiv, viscosity, qhov zoo ntawm cov khoom me me thiab qhov nrawm ntawm kev yaj. Feem ntau, qhov ntxiv loj, qhov zoo me me, qhov viscosity loj, qhov nrawm ntawm kev khaws dej siab, qhov ntxiv muaj feem cuam tshuam loj rau qhov nrawm ntawm kev khaws dej, qhov viscosity thiab qhov nrawm ntawm kev khaws dej tsis qis dua qhov kev sib raug zoo, qhov nrawm ntawm kev yaj feem ntau nyob ntawm qib kev hloov pauv ntawm qhov chaw thiab qhov zoo ntawm cov khoom me me ntawm cov cellulose. Methyl cellulose thiab hydroxypropyl methyl cellulose hauv ntau cov cellulose ethers saum toj no muaj qhov nrawm ntawm kev khaws dej siab dua.
(2) Methyl cellulose tuaj yeem yaj rau hauv dej txias, dej kub yuav nyuaj rau yaj, nws cov kua dej hauv pH = 3-12 ntau yam ruaj khov heev, thiab hmoov txhuv nplej siab, thiab lwm yam, thiab ntau yam surfactants muaj kev sib raug zoo, thaum qhov kub ncav cuag qhov kub gelation, yuav muaj qhov tshwm sim gelation.
(3) Kev hloov pauv kub yuav cuam tshuam loj heev rau qhov ceev ntawm methyl cellulose khaws dej, feem ntau, qhov kub siab dua, qhov khaws dej phem dua. Yog tias qhov kub ntawm cov mortar tshaj 40 degrees, qhov khaws dej ntawm methyl cellulose yuav phem dua, uas cuam tshuam loj heev rau kev tsim kho ntawm cov mortar.
(4)Methyl cellulosemuaj feem cuam tshuam rau qhov kev tsim kho thiab kev nplaum ntawm cov mortar. Qhov kev nplaum ntawm no yog hais txog lub zog nplaum uas tus neeg ua haujlwm hnov ntawm cov cuab yeej thiab phab ntsa substrate, uas yog, qhov kev tiv thaiv shear ntawm cov mortar. Kev nplaum yog loj, qhov kev tiv thaiv shear ntawm cov mortar yog loj, lub zog uas cov neeg ua haujlwm xav tau thaum siv kuj loj, thiab kev tsim kho ntawm cov mortar tsis zoo.
Lub sijhawm tshaj tawm: Plaub Hlis-25-2024