1. Dab tsi yog lub ntsiab ntawv thov ntawm hydroxypropyl methylulose (HPMC)?
HPMC yog dav siv hauv cov khoom siv tsim kho, cov khoom siv hluavtaws, cov tshuaj, cov khoom noj, cov tshuaj ua liaj ua teb, luam yeeb thiab lwm yam kev lag luam. HPMC tuaj yeem sib faib ua qib kev tsim kho, khoom noj thiab cov qib tshuaj raws li lub hom phiaj. Tam sim no, feem ntau ntawm cov khoom lag luam yog cov qib kev tsim kho. Hauv cov hmoov tsim kho, ua kom muaj hmoov rau hauv cov nyiaj ntau, kwv yees li 90% yog siv rau cov hmoov ua kom muaj hmoov, thiab cov so yog siv rau cov txiv kab ntxwv xis thiab lo kua nplaum.
2. Muaj ob peb hom ntawm hydroxypropyl methylcellose (HPMC), thiab dab tsi yog qhov sib txawv hauv lawv cov kev siv?
HPMC tuaj yeem faib ua cov hom khoom lag luam tseem ceeb thiab kev kub. Cov khoom lag luam tseem ceeb sai sai rau hauv dej txias thiab ploj mus rau hauv dej. Nyob rau lub sijhawm no, cov kua tsis muaj viscosity vim HPMC tsuas yog dispersed hauv dej yam tsis muaj kev sib cais tiag. Kwv yees li 2 feeb, lub viscosity ntawm cov kua maj mam nce, kev sib sau pob tshab viscous colloid. Cov khoom kub kub yaj, thaum ntsib nrog dej txias, tuaj yeem tawg nrawm nrawm hauv dej kub thiab ploj hauv dej kub. Thaum qhov kub thiab txias rau qhov kub thiab txias, qhov dav dav yuav maj mam tshwm sim kom txog thaum nws tsim lub pob tshab viscous colloid. Qhov kub-melt hom tsuas yog siv rau hauv cov hmoov ua kom muaj hmoov thiab tshuaj khib. Hauv cov kua nplaum kua thiab pleev xim, yuav muaj pab pawg tshwm sim thiab tsis tuaj yeem siv. Cov hom tseem ceeb muaj cov kev siv dav dav. Nws tuaj yeem siv tau hauv cov hmoov ua kom muaj hmoov thiab tshuaj khib, nrog rau kua nplaum ua kua thiab pleev xim, tsis muaj cov contraindications.
3. Dab tsi yog cov kev sib cais ntawm hydroxypropyl methylcelulose (HPMC)?
Cov Dej Dej Kub Kawg Ob txoj hauv kev tau piav raws li nram qab no:
1) Muab cov dej kub uas yuav tsum muaj dej kub rau hauv lub thawv thiab cua sov nws txog 70 ° C. Lub HydroxyPropyyl nrho methylcellulose tau maj mam ntxiv nyob rau hauv qeeb stirring, thiab tom qab ntawd maj mam tsim ib tug slurry, uas tau txias nyob rau hauv nplawm.
2), ntxiv 1/3 lossis 2/3 ntawm qhov uas yuav tsum tau dej rau hauv lub ntim, thiab ua kom sov rau ntawm HPMC raws li txoj kev 1), thiab npaj cov dej kub slurry; Tom qab ntawd ntxiv cov dej uas tseem tshuav rau cov dej txias rau dej kub slurry, cov sib tov tau txias tom qab nplawm.
Hmoov sib xyaw txoj kev: Sib tov HPMC hmoov nrog ntau cov tshuaj muaj ntau, thiab tom qab ntawd HPMC tuaj yeem yaj, vim tias tsuas yog HPMC me ntsis hauv txhua qhov me me Kaum hmoov, yuav yaj tawm tam sim ntawd thaum muaj kev sib cuag nrog dej. --Puterty hmoov thiab coll tuam ntxhab yog siv hom no. [Hydroxypropyl methylcellose (HPMC) yog siv los ua cov tuab thiab dej rov qab los tswj hwm hauv ncoo hmoov. ]
4. Yuav ua li cas thiaj li txiav txim siab qhov zoo ntawm hydroxyprropal methylcellose (HPMC) tsuas yog thiab intuitively?
(1) whiteness: tsis tuaj yeem tiv thaiv kom HPMC yooj yim siv, thiab yog cov neeg sawv cev kom huv, nws yuav cuam tshuam nws cov kev zoo. Txawm li cas los xij, feem ntau ntawm cov khoom lag luam zoo muaj zoo dawb.
(2) Fineness: lub txiaj ntsig ntawm HPMC feem ntau muaj 80 mesh thiab 100 mesh, thiab 120 mesh tsawg dua. Feem ntau HPMC tsim hauv Hebei yog 80 mesh. Tus finer lub fineness, feem ntau hais lus, zoo dua.
(3) Kev Hloov Teeb Hloov: Muab HydroxyPropropy (Holmc) mus rau hauv cov dej los ua ib qho kev hloov pauv ntawm colloid, thiab saib nws cov kev pauv teeb meem. Qhov ntau dua qhov kev hloov tsheb loj dua, qhov zoo dua, qhia tias muaj tsawg dua insolubles hauv nws. Cov. Lub permeability ntawm cov neeg ntsug feem ntau zoo, thiab nws tsis txhais tau tias yog qhov zoo dua li tias ntawm kab rov tav reactors, thiab khoom lag luam zoo yog txiav txim siab los ntawm ntau yam.
(4) Qhov Loj Tshaj Plaws: Qhov loj dua qhov sib tsoo tshwj xeeb, qhov hnyav dua qhov zoo dua. Qhov tshwj xeeb yog qhov loj, feem ntau vim tias cov ntsiab lus ntawm hydroxypropyl group hauv nws yog siab, thiab cov ntsiab lus ntawm hydroxyproproutyl yog qhov siab, cov dej khaws cia zoo dua.
5. Dab tsi yog qhov nyiaj ntawm hydroxypropy kasthylcellose (HPMC) hauv cov hmoov putty?
Tus nqi ntawm HPMC siv hauv kev siv cov kev siv tau sib txawv raws li kev nyab xeeb puag ncig ntawm kev nyab xeeb puag ncig ntawm cov neeg muaj kev nyab xeeb thiab "zoo uas yuav tsum tau ua los ntawm cov neeg siv khoom". Feem ntau hais lus, nruab nrab ntawm 4 kg thiab 5 kg. Piv txwv li: Feem ntau ntawm cov hmoov putty hauv Beijing yog 5 kg; Feem ntau ntawm cov hmoov putty hauv Guizhou yog 5 kg nyob rau lub caij ntuj sov thiab 4.5 kg thaum lub caij ntuj no; Tus nqi ntawm putty nyob rau hauv Yunnan yog qhov me me, feem ntau 3 kg mus rau 4 kg, thiab lwm yam.
6. Dab tsi yog qhov tsim nyog viscosity ntawm hydroxypropyl methylulose (HPMC)?
Putty hmoov feem ntau yog 100,000 yuan, thiab cov cai rau tshuaj khib tau ntau dua, thiab Yuan yuav tsum tau siv yooj yim. Ntxiv mus, cov haujlwm tseem ceeb tshaj plaws ntawm HPMC yog dej tuav, ua raws li thickening. Nyob rau hauv cov hmoov putty, tsuav li lub taub dej ceev yog qhov zoo thiab lub viscosity yog tsawg (70,000-80,000), nws tseem ua tau. Ntawm chav kawm, qib siab dua viscosity, zoo dua cov txheeb ze cov dej rov qab khaws cia. Thaum lub viscosity tshaj 100,000, lub viscosity yuav cuam tshuam rau cov dej tuav tseg. Tsis ntau ntxiv lawm.
7. Dab tsi yog cov ntsuas ntsuas tseem ceeb ntawm hydroxypropylropeny (HPMC)?
Hydroxypropyl cov ntsiab lus thiab viscosity, feem ntau cov neeg siv tau txhawj xeeb txog ob yam ntsuas no. Cov uas muaj cov ntsiab lus hydroxyproprots feem ntau muaj cov dej ua kom zoo dua. Ib qho nrog cov viscosity siab muaj cov dej siab zoo dua, tsis yog), thiab ib qho uas muaj viscosity siab yog siv tau zoo dua hauv cov xis.
8. Dab tsi yog cov ntaub ntawv nyoos ntawm hydroxypropyl methylcelulose (HPMC)?
Cov ntaub ntawv raw loj ntawm hydroxypropylulose (HPMC): Cov zaub mov ua kom zoo nkauj, cov tshuaj txhuam me, acid, isopropanol, thiab lwm yam.
9. Dab tsi yog qhov ua haujlwm tseem ceeb ntawm daim ntawv thov
Hauv cov hmoov putty, HPMC ua si peb lub luag haujlwm ntawm thickening, dej tuav thiab tsim kho. Thickening: cellulose tuaj yeem ua tuab rau ncua thiab ua kom cov tshuaj daws teeb meem nce thiab nqis, thiab tiv taus sagging. Dej khaws cia: Ua cov hmoov ua kom qhuav maj mam, thiab pab cov ntug dej tshauv kom muaj kev cuam tshuam hauv kev ua dej. Kev tsim kho: Cellulose muaj cov nyhuv muaj lubricating nyhuv, uas tuaj yeem ua rau cov hmoov puty muaj kev tsim kho zoo. HPMC tsis koom nrog kev siv tshuaj lom neeg, tab sis tsuas yog ua lub luag haujlwm pab pawg. Ntxiv cov dej rau cov hmoov putty thiab muab tso rau ntawm phab ntsa yog tshuaj lom neeg cov tshuaj tiv thaiv, vim tias cov tshuaj tshiab tau tsim. Yog tias koj tshem tawm cov hmoov putty ntawm phab ntsa los ntawm phab ntsa, thiab siv nws dua, nws yuav tsis ua haujlwm vim tias cov khoom siv hluav taws xob (calcium carbonate) tau tsim. ) Ib yam nkaus. Lub ntsiab ntawm cov hmoov tshauv calcium hmoov yog: sib xyaw ntawm Ca (Oh) 2, CAO thiab ib qho me me ntawm CaCo3, CA (OH) 2 ↓ + H2O HHE + ASH FOSCAS yog nyob rau hauv dej thiab huab cua nyob rau hauv kev txiav txim ntawm CO2, calcium carbonate yog tsim tawm, thaum HPMC tsuas yog khaws cov tshuaj ntsuab zoo dua, thiab tsis koom nrog txhua yam kev siv tshuaj.
10. HPMC yog cov tsis-ionic cellulose ether, yog li dab tsi tsis-ionic?
Nyob rau hauv Layman cov lus, tsis muaj i ions cov tshuaj uas tsis ionize hauv dej. Ionization hais txog cov txheej txheem uas ib qho electrolyte rau hauv kev them nyiaj rau hauv kev them nyiaj rau hauv cov kuab tshuaj tshwj xeeb (xws li dej, cawv). Piv txwv li, sodium chloride (nacl), ntsev peb noj txhua hnub, yaj nyob rau hauv dej thiab chloride ions (cl) uas yog tsis zoo. Uas yog hais, thaum HPMC tau muab tso rau hauv dej, nws yuav tsis cais tawm rau hauv cov pej xeem, tab sis muaj nyob rau hauv daim ntawv ntawm molecules.
11. Dab tsi yog qhov kub thiab txias ntawm hydroxypropy kasthylcellulose rau?
Qhov kub thiab txias ntawm HPMC muaj feem cuam tshuam nrog nws cov ntsiab lus methoxy, qis dua cov ntsiab lus methoxy ↓, qhov ntau dua cov khoom kub siab dua.
12. Puas muaj kev sib raug zoo ntawm qhov poob ntawm cov hmoov putty thiab HPMC?
Cov hmoov poob ntawm cov hmoov putty yog feem ntau cuam tshuam nrog qhov zoo ntawm cov ntug dej tshauv, thiab muaj me ntsis los ua HPMC. Cov ntsiab lus tsawg dua ntawm grey calcium thiab tus tsis raug cai ntawm sabo thiab ca (Oh) 2 hauv grey calcium yuav ua rau hmoov hmoov. Yog tias nws muaj qee yam ua nrog HPMC, ces yog HPMC muaj cov dej tsis zoo, nws tseem yuav ua rau hmoov hmoov hmoov. Rau cov laj thawj tshwj xeeb, thov saib cov lus nug 9.
13. Dab tsi yog qhov sib txawv ntawm cov khaub thuas-dej tam sim ntawd thiab cov kub-soluble hom ntawm hydroxypropylulose hauv cov txheej txheem ntau lawm?
Cov dej txias tam sim ntawm HPMC yog cov npoo-kho nrog glyoxal, thiab nws disperses sai sai hauv dej txias, tab sis nws tsis paub tiag tiag. Nws tsuas yaj tag thaum viscosity nce. Kub qhuav hom tsis yog cov npoo kho nrog glyoxal. Yog tias tus nqi ntawm glyoxal yog loj, kev dispersion yuav tau nrawm, tab sis cov viscosity yuav nce qeeb, thiab yog tias tus nqi me, qhov fab ntxeev yuav muaj tseeb.
14. Dab tsi yog qhov tsis hnov tsw ntawm hydroxypropyl methylcellose (HPMC)?
HPMC tau tsim los ntawm cov txheej txheem hnyav siv tau toluene thiab isopropanol raws li cov kuab tshuaj. Yog hais tias ntxuav tsis zoo heev, yuav muaj qee cov ntxhiab tsw.
15. Yuav ua li cas xaiv hydroxypropyl methylculose (HPMC) rau cov hom phiaj sib txawv?
Daim ntawv thov ntawm Putty Hmoov: Qhov xav tau yog tsawg, viscosity yog 100,000, nws yog qhov txaus, qhov tseem ceeb yog kom dej kom zoo. Daim ntawv thov ntawm cug: qhov yuav tsum tau muaj, siab viscosity, 150,000 yog qhov zoo dua. Daim ntawv thov ntawm cov kua nplaum: Cov khoom tseem ceeb uas yuav tsum muaj viscosity siab.
16. Dab tsi yog lub npe ntawm hydroxypropyl methylulose?
HydroxyPropy cellulose, Lus Askiv: HydroxyPropyl Methylropy: HPMC lossis MHPC Alias: Hypromellose; Cellulose hydroxypropyl methyl ether; Hypromellose, cellulose, 2-hydroxyprropylsyl cellulose ether. Cellulose hydroxypropyl methylety ether ether.
17. Daim ntawv thov ntawm HPMC hauv cov hmoov putty, yog vim li cas rau lub npuas hauv cov hmoov noj ua noj?
Hauv cov hmoov putty, hpmc ua si peb lub luag haujlwm ntawm thickening, dej tuav thiab tsim kho. Tsis txhob koom nrog txhua yam kev tawm tsam. Cov laj thawj rau npuas: 1. Tso dej ntau dhau. 2. Hauv qab txheej tsis qhuav, tsuas yog txhuam lwm txheej rau saum, thiab nws yooj yim rau ua npuas ncauj.
18. Dab tsi yog cov mis ntawm putty hmoov rau phab ntsa sab hauv thiab sab nrauv?
Sab Hauv Phab Ntsa Putty W hmoov: Ntsig Calcium 800KG, Starch ether, ntshiab av, citricylamide, thiab lwm yam tuaj yeem txuas ntxiv)
Phab ntsa sab nraud Putty Putty Putty: Maas 350kg Quartz Xuab zeb 500kg cellulose ether 3kg starch ether ether 0.5kg ntoo fiber 2kg
19. Dab tsi yog qhov sib txawv ntawm HPMC thiab MC?
MC yog methyl cellulose, uas yog ua los ntawm cellulose ether los ntawm kev kho cov paj rwb nrog alkali, siv cov methotherfacide uas yog etherification tus neeg sawv cev, thiab mus dhau ntawm cov kev tawm tsam. Feem ntau, cov qib degree hloov tau yog 1.6 ~ 2.0, thiab solubility kuj txawv degrees ntawm kev hloov pauv sib txawv. Nws zwm rau cov tsis muaj ionic cellulose ether.
(1) Cov dej ua kom rov qab los ntawm methyl cellulose yog nyob ntawm nws cov nyiaj, viscosity, particle zoo heev thiab ntseeg tus nqi. Feem ntau, yog tias qhov nyiaj ntxiv yog qhov loj, lub fineness yog me me, thiab viscosity yog qhov loj, dej khaws cia siab dua yog siab. Ntawm lawv, tus nqi ntawm kev ntxiv yog qhov cuam tshuam loj tshaj plaws rau cov dej khaws nyiaj khaws cia, thiab theem viscosity tsis ncaj qha rau cov qib dej khaws nyiaj khaws cia. Qhov kev sib cais feem ntau yog nyob ntawm cov qib ntawm kev hloov kho saum npoo ntawm cov cellulose thiab particle txaus. Ntawm cov kev ua haujlwm ntawm cellulose saum toj no, methyl cellulose thiab hydroxypropyl cellulose muaj cov dej rov qab ua haujlwm dua.
(2) Methylcellulose yog soluble hauv dej txias, thiab nws yuav nyuaj rau yaj hauv dej kub. Nws cov kev daws teeb meem aqueous yog ruaj khov nyob rau hauv cov xov tooj ntawm PH = 3 ~ 12. Nws muaj qhov sib xyaw zoo nrog cov hmoov txhuv nplej siab, cov pos hniav guar, thiab lwm yam thiab ntau surfactants. Thaum qhov ntsuas kub nce mus txog qhov gelation kub, gelation tshwm sim.
(3) Kev hloov pauv qhov kub yuav cuam tshuam rau cov dej tuav ntawm tus nqi methyl ntawm methyl polulose. Feem ntau, qhov ntsuas kub siab dua, qhov tsis zoo ntawm cov dej khaws cia. Yog tias cug cug Kub tshaj 40 ° C, cov dej tuav tseg ntawm methyl cellulose yuav raug txo qis, muaj feem xyuam rau kev tsim kho ntawm lub tshuaj khib.
(4) Methyl cellulose muaj qhov cuam tshuam tseem ceeb ntawm kev tsim kho thiab nplaum ntawm cug. Qhov "adhesion" ntawm no yog hais txog lub zog nplaum tau hnov ntawm tus neeg ua haujlwm cov cuab tam thiab phab ntsa substrate, uas yog, cov shear tiv thaiv ntawm lub cug. Cov nplaum yog qhov siab, cov shear tiv thaiv ntawm cov neeg ua haujlwm yog loj, thiab lub zog ntawm cov neeg ua haujlwm ntawm cov txheej txheem yog loj, thiab kev tsim kho ntawm lub tshuaj khib yog neeg pluag. Methyl cellulose adhesion yog nyob rau theem qib hauv cellulose ether.
HPMC yog hydroxypropyl methylulose, uas yog ib qho tsis-ionic cellulose sib xyaw ua ke tom qab etyl chloride, thiab dhau los ntawm kev tawm tsam ethermification. Qib degree hloov chaw yog feem ntau 1.2 ~ 2.0. Nws cov khoom sib txawv vim qhov sib piv sib txawv ntawm methoxyl cov ntsiab lus thiab hydroxypropropsyl cov ntsiab lus.
(1) HydroxyPropropy yog methylcellulose yog yooj yim soluble hauv dej txias, thiab nws yuav ntsib teeb meem hauv cov dej kub. Tab sis nws gelation kub hauv dej kub yog qhov siab dua li ntawm methyl cellulose. Lub solubility hauv dej txias kuj tseem txhim kho piv nrog methyl cellulose.
(2) Lub viscosity ntawm hydroxypropyf methylcellulose muaj feem xyuam rau nws cov molecular hnyav, thiab qhov loj dua cov molecular hnyav, ntau dua viscosity. Qhov kub kuj cuam tshuam rau nws cov viscosity, raws li kub nce ntxiv, viscosity txo. Txawm li cas los xij, nws cov viscosity siab muaj qhov kub tsawg dua li methyl cellulose. Nws cov kev daws teeb meem yog ruaj khov thaum khaws cia ntawm chav tsev kub.
(3) HydroxyPropyyl methylculose yog ruaj khov rau kua qaub thiab alkali, thiab nws cov kua aqueous yog qhov ruaj khov heev hauv cov ph = 2 ~ 12. Caustic dej qab zib thiab kua qaub muaj cov nyhuv me me rau nws cov kev ua tau zoo, tab sis alkali tuaj yeem ua rau nws cov kev sib cais thiab nce siab txog nws viscosity. HydroxyPropyyl methylulose yog ruaj khov rau cov ntsev ua kom zoo, tab sis thaum lub hom phiaj ntawm hydroxypropen methylropylulose kev daws teeb meem.
(4) Cov dej ua kom muaj zog ntawm hydroxypropylulose nyob ntawm nws tus nqi ntxiv, thiab nws cov dej khaws cia nyob rau hauv tib tus nqi yog siab dua li ntawm methyl cellulose.
(5) HydroxyPropropy Metylcellulose tuaj yeem sib xyaw nrog cov dej-soluble polymer sib txuas ua ke los ua cov khaub ncaws hnav thiab siab dua homphosity. Xws li cov dej cawv polyvinyl, cov hmoov txhuv nplej siab ether, zaub cov pos hniav, thiab lwm yam.
(6) cov nplaum ntawm hydroxypropyl methylcellulose rau tshuaj tshuaj kho yog siab tshaj li methylcellulose.
(7) HydroxyPropyyl methylcellose tau zoo dua enzyme tiv thaiv ntau dua li methylcellose, thiab nws cov kev daws teeb meem tsis tshua muaj kev cuam tshuam los ntawm cov enzymes dua methylculose.
20. Dab tsi yuav tsum tau them nyiaj rau hauv kev thov tiag tiag ntawm kev sib raug zoo ntawm viscosity thiab qhov kub ntawm HPMC?
Lub viscos ntawm HPMC yog inversely proportional kom kub, uas yog, viscosity nce li qhov ntsuas kub. Lub viscosity ntawm cov khoom peb feem ntau yog xa mus hais txog qhov kev xeem ua rau nws 2% kev daws teeb meem ntawm qhov kub ntawm 20 degrees Celsius.
Hauv kev siv cov kev siv, nws yuav tsum tau sau tseg tias hauv cov cheeb tsam uas muaj qhov sib txawv loj ntawm lub caij ntuj sov thiab lub caij ntuj no, nws raug nquahu kom siv cov viscosity tsis tshua muaj zog nyob rau lub caij ntuj no, uas yog ntau dua rau kev tsim kho kom tsim kho. Txwv tsis pub, thaum ntsuas kub yog tsawg, viscosity ntawm cellulose yuav nce, thiab txhais tes xav tias yuav hnyav thaum scraping.
Nruab nrab viscosity: 75000-100000 tsuas yog siv rau putty
Vim li cas: Cov Dej Zoo
High viscosity: 150000-200000 siv rau polystyrene particle rwburrch couring cap roj hmab hmoov thiab vitrified micral thermal rwb thaiv tsev cug.
Vim li cas: Lub viscosity yog siab, cug tsis yooj yim kom poob tawm, sag, thiab kev tsim kho tau zoo dua.
Tab sis feem ntau hais lus, qib siab dua cov viscosity, qhov zoo dua cov dej khaws cia. Yog li ntawd, xav txog tus nqi, ntau cov hmoov hlau cov hmoov av hloov nruab nrab thiab tsis muaj viscosity cellulose (20000-40000) nrog nruab nrab-cellivo (20000-40000) los txo tus nqi ntxiv. Cov.
Lub Sijhawm Post: Nov-18-2022