1. Dab tsi yog qhov tseem ceeb siv ntawm hydroxypropyl methylulose?
HPMC tau dav siv hauv cov ntaub ntawv hauv tsev, cov khoom siv hluavtaws, cov khoom siv, cov khoom noj, cov ntaub ntawv ua liaj / duab ua liaj ua teb, luam yeeb thiab lwm yam tshuaj lom neeg. HPMC tuaj yeem faib ua qib kev lag luam, cov zaub mov qib thiab cov qib tshuaj raws li nws siv.
2. Muaj ntau hom kev hydroxypropy methylcelulose. Dab tsi yog qhov sib txawv ntawm lawv?
HPMC tuaj yeem muab faib ua cov hom tseem ceeb (hom ntawv me me ") thiab kub-soluble hom. Cov khoom lag luam tam sim ntawd sai sai rau hauv dej txias thiab ploj hauv dej. Nyob rau lub sijhawm no, cov kua tsis muaj viscosity vim HPMC tsuas yog dispersed hauv dej thiab tsis muaj kev daws teeb meem tiag. Tom qab hais txog (nplawm) 2 feeb, viscosity ntawm cov kua maj mam nce thiab lub pob tshab viscous colloid yog tsim. Cov khoom kub-soluble cov khoom, hauv dej txias, tuaj yeem tawg sai rau hauv dej kub thiab ploj hauv dej kub. Thaum qhov kub poob rau ib qho kub thiab txias (raws li cov khoom kub thiab txias (raws li cov khoom kub thiab txias ntawm cov khoom lag luam), lub viscosity maj mam tshwm sim kom txog thaum lub pob tshab thiab hom phiaj colloid yog tsim.
3. Dab tsi yog cov hydroxypropyl methylenpecleculose txoj kev siv?
1. Txhua tus qauv tuaj yeem raug ntxiv rau cov khoom siv los ntawm kev sib xyaw qhuav;
2. Nws yuav tsum tau ntxiv mus ncaj qha rau qhov ntsuas kub qub qub. Nws yog qhov zoo tshaj plaws siv hom dej txias dispersion yam. Tom qab ntxiv, nws feem ntau tau mus txog tuab li ntawm 10-90 feeb (do, do, do)
3. Rau cov qauv zoo tib yam, do thiab tawg nrog dej kub ua ntej, tom qab ntawd ntxiv dej txias kom yaj tom qab nplawm thiab txias.
4. Yog tias agglomeration lossis qhwv tshwm sim thaum sib tov, nws yog vim tias lub stirring tsis txaus lossis tus qauv zoo tib yam tau ntxiv rau dej txias. Txij ntawm no, do sai sai.
5. Yog tias npuas yog tsim tawm thaum muaj kev sib cais, lawv tuaj yeem tawm ntawm kev daws teeb meem, thiab tshem tawm los ntawm lub tshuab nqus tsev, thiab lwm yam, thiab tus neeg sawv cev tsim nyog muab ntxiv.
4. Yuav ua li cas thiaj li txiav txim siab qhov zoo ntawm hydroxyprropy muag methylcellulose thiab intuitively?
1. Whiteness. Txawm hais tias dawb tsis tuaj yeem txiav txim siab txawm HPMC yog qhov zoo lossis tsis yog, thiab ntxiv cov khoom ntxuav kom zoo, thiab cov khoom lag luam zoo tshaj plaws muaj zoo dawb.
2. Fineness: HPMC fineness feem ntau yog feem ntau 80 mesh thiab 100 mesh, qis dua 120, tus flexer zoo dua.
3. Lub teeb kev cuam tshuam: HPMC cov ntaub ntawv ib pob tshab rau hauv dej. Saib ntawm qhov kev hloov pauv ntawm lub teeb. Qhov loj dua cov kev hloov chaw loj, qhov zoo dua permeability, uas txhais tau tias muaj cov tshuaj tsis muaj insoluble tsawg hauv nws. Txoj kab rov qab feem ntau zoo, thiab cov kab rov tav reactor yuav emit qee. Tab sis nws tsis tuaj yeem hais tias qhov ntau lawm cov khoom zoo ntawm cov kettles yog qhov zoo dua li cov kettles kab rov tav. Muaj ntau ntau yam uas txiav txim cov khoom zoo.
4. Lub ntiajteb txawj nqus tshwj xeeb: qhov ntau dua qhov sib nqus, qhov hnyav dua qhov zoo dua. Qhov ntau dua qhov kev sib nqus tshwj xeeb, ntau dua cov ntsiab lus hydroxypropylopyl. Feem ntau, siab dua cov ntsiab lus hydroxypropyl, qhov zoo dua cov dej khaws cia.
5. Koj muaj pes tsawg hydroxypropyl methylcellulose siv tau hauv cov hmoov putty?
Tus nqi ntawm HPMC siv nyob rau hauv cov ntawv thov tiag tiag txawv ntawm qhov chaw rau qhov chaw, feem ntau hais lus ntawm huab cua, tso cov hmoov av hauv av, tso hmoov av hauv zos thiab cov neeg siv khoom zoo.
6. Lub viscosity ntawm hydroxypropyl methylulose?
Putty hmoov feem ntau them RMB 100,000, thaum cug yuav tsum muaj siab dua. Nws raug nqi RMB 150,000 yuav tsum tau yooj yim siv. Ntxiv mus, qhov tseem ceeb tshaj plaws ntawm HPMC yog los khaws dej, ua raws los ntawm thickening. Hauv cov hmoov putty, tsuav li lub taub dej ceev yog qhov zoo thiab lub viscosity yog tsawg (7-8), nws tseem ua tau. Ntawm chav kawm, ntau hom viscosity, qhov zoo dua cov txheeb ze kom rov qab los. Thaum lub viscosity yog saum 100,000, lub viscosity muaj cov nyhuv me me rau cov dej khaws cia.
7. Dab tsi yog cov ntsuas ntsuas tseem ceeb ntawm hydroxypropyyl methylulose?
Hydroxypropyl cov ntsiab lus
Methyl Cov Ntsiab Lus
viscosity
Txhos
Lub cev yuag yuag
8. Dab tsi yog cov ntaub ntawv nyoos ntawm hydroxypropyl methylulose?
Cov ntaub ntawv nyoos ntawm HPMC: Refined Paj Rwb, methyl chloride, propylene oxide, lwm cov ntaub ntawv raw, caustic dej qab zib, thiab acid toluene.
9. Daim ntawv thov thiab lub ntsiab muaj nuj nqi ntawm hydroxypropyl methylculose hauv cov hmoov putty, puas yog tshuaj lom neeg?
Hauv cov hmoov putty, nws ua peb lub luag haujlwm loj: thickening, dej tuav thiab tsim kho. Thickening tuaj yeem thicken cellulose thiab ua kom muaj kev ncua lub luag haujlwm, ua kom cov kev daws teeb meem thiab kev tiv thaiv sagging. Dej khaws cia: Ua cov hmoov uas muaj zaub mov kom qhuav maj mam thiab pab cov calcium grey kom hnov cov dej ntws hauv qhov dej. Kev ua haujlwm: cellulose muaj cov nyhuv muaj lubricating, uas ua rau cov hmoov puty muaj cov haujlwm zoo. HPMC tsis koom nrog kev siv tshuaj lom neeg thiab tsuas yog ua lub luag haujlwm txhawb nqa.
10. HydroxyPropyyl methylulose yog ib qho tsis-ionic cellulose ether, yog li dab tsi tsis yog-ionic hom?
Feem ntau hais lus, inert tshuaj tsis koom nrog tshuaj lom neeg cov kev tshua.
CMC (Carboxymetylcelleculose) yog cellulose cellulose thiab yuav tig mus rau hauv cov dej hauv qab dej thaum raug calcium tshauv.
11. Dab tsi yog qhov kub thiab txias ntawm hydroxypropy kasthylcellulose rau?
Lub ntsuas kub ntawm HPMC muaj feem cuam tshuam nrog nws cov ntsiab lus methoxyl. Qhov qis dua cov ntsiab lus methoxyl, qhov ntau dua cov gel kub.
12. Puas muaj kev sib raug zoo ntawm kev sib raug zoo ntawm cov hmoov txhuv thiab HydroxyPropyyl methylulose?
Qhov no yog ib qho tseem ceeb! HPMC muaj cov dej tsis zoo thiab yuav ua rau hmoov.
13. Dab tsi yog qhov sib txawv hauv cov txheej txheem ntau lawm ntawm kev daws dej dej txias thiab dej dej kub ntawm hydroxypropyl methylulose?
HPMC Txias Hom-soluble hom tau nrawm nrawm hauv dej txias tom qab kev kho deg nrog glyoxal, tab sis nws tsis yaj. Lub viscosity nce, uas yog, nws yaj. Lub kub yaj tsis yog tsis nto kho nrog glyoxal. Glyoxal yog qhov loj me thiab disperses sai sai, tab sis muaj cov viscosity sai sai, thiab ntim me me, thiab lwm yam.
14. Dab tsi yog qhov tsis hnov tsw ntawm hydroxypropyl methylulose?
HPMC ua los ntawm cov qauv kev daws teeb meem yog ua nrog toluene thiab isopropyl cawv li kuab tshuaj. Yog tias tsis ntxuav kom zoo, yuav muaj qee cov ntxhiab tsw. (Nruab nrab thiab rov qab ua dua tshiab yog ib txoj kev tseem ceeb rau cov ntxhiab)
15. Yuav ua li cas xaiv qhov tsim nyog hydroxypropyl methylcellose rau kev siv sib txawv?
Putty Hmoov: Kev Ruaj Ntseg Siab Siab Yuav Tsum thiab Kev Tsim Kho Zoo (Pom Zoo Hom: 7010n)
Capaent dogent-raws li cug: kev ua kom siab siv dej siab, qhov kev pom zoo tawm (pom zoo viscosity (pom zoo qib: HPK100M)
Daim Ntawv Thov Kev Tsim Kho Kom Zoo: Cov khoom lag luam tam sim ntawd, siab viscosity. (Pom zoo hom: HPK200M)
Gypsum tshuaj khib: Kev xaiv cov dej siab, nruab nrab-qis viscosity (astantaneous viscosity (pom zoo qib: HPK600M)
16. Dab tsi yog lwm lub npe ntawm hydroxypropyl methylulose?
HPMC lossis MHPC kuj tseem hu ua hydroxypropyl methylulose thiab hydroxypropyl methylculose ether.
17. Kev thov ntawm hydroxypropyyl methylculose hauv putty hmoov. Dab tsi ua rau putty hmoov rau ua npuas ncauj?
HPMC ua si peb lub luag haujlwm tseem ceeb hauv Putty Hmoov: Thickening, dej tuav thiab tsim. Cov laj thawj rau npuas yog:
1. Ntxiv cov dej ntau dhau.
2. Yog hais tias hauv qab yog tsis qhuav, scraping lwm txheej rau saum yuav ua rau blimers tau yooj yim.
18. Dab tsi yog qhov sib txawv ntawm hydroxypropyl methylulose thiab mc:
MC, Methyl cellulose, yog tsim los ntawm kev kho suab paj rwb tom qab kev kho me alkali, siv cov neeg sawv cev alkali, thiab cov tshuaj tiv thaiv kab mob ether ether. Cov txheej txheem dav dav yog 1.6-2.0, thiab solubility ntawm sib txawv degrees kuj txawv. Nws yog cov tsis-ionic cellulose ether.
(1) Cov dej ua kom muaj methylcellulose nyob ntawm nws cov nyiaj ntxiv, viscosity, particle txaus thiab ua kom kawg. Feem ntau hais lus, tus nqi ntxiv yog qhov loj, lub viscosity yog qhov siab, thiab cov dej khaws cia siab. Qhov nyiaj ntxiv tau muaj kev cuam tshuam zoo ntawm cov dej khaws nyiaj khaws cia, thiab cov viscosity tsis muaj dab tsi ua rau dej rov qab tus nqi. Qhov kev sib cais zuj zus feem ntau yog nyob ntawm qhov kev hloov kho deg degree thiab cov particle zoo ntawm cov cellulose sau. Ntawm cov neeg hais txog cellulose saum toj no, methylcellulose thiab hydroxyprropylropenylosylulose tus nqi rov qab.
(2) Methyl Cellulose tuaj yeem yaj nyob rau hauv dej txias, tab sis yuav ntsib teeb meem hauv cov dej kub. Nws cov kev daws teeb meem aqueous yog qhov ruaj khov heev hauv cov xov tooj ntawm PH = 3-12, thiab muaj qhov zoo sib xyaw nrog cov hmoov txhuv nplej siab thiab ntau yam surfactants. Thaum qhov kub nce mus txog lub gel thaum qhov gelation kub nce ntxiv, gelation yuav tshwm sim.
(3) kev hloov pauv kub yuav cuam tshuam rau cov dej ua kom lubethylcellulose. Feem ntau, qhov ntsuas kub siab dua, qhov tsis zoo ntawm cov dej khaws cia. Yog tias lub tshuaj khib qhov kub tshaj 40 degrees, dej ceev ceev ntawm methylcellulose yuav cuam tshuam rau kev tsim kho ntawm lub tshuaj khib.
(4) Methylcellulose muaj qhov cuam tshuam tseem ceeb ntawm kev tsim kho thiab nplaum ntawm cug. Cov nplaum no yog hais txog cov adhesion tau hnov ntawm tus neeg ua haujlwm daim ntawv thov thiab cov khoom siv hluav taws xob, uas yog, cov shear tiv thaiv ntawm lub cug. Cov nplaum yog qhov siab, cov shear tiv thaiv ntawm lub cug yog qhov siab, thiab lub zog tsim nyog los ntawm cov neeg ua haujlwm kuj tseem siab, yog li kev tsim kho ntawm lub tshuaj khib yog neeg pluag.
Lub Sijhawm Post: Jan-31-2024