1. Dab tsi yog qhov kev sib cais ntawm hydroxyprropyl methylcelulose hpmc?
Teb: Dej kub xaus txoj kev: Txij li HPMC tsis yaj hauv dej kub, HPMC tuaj yeem ua rau dej kub ntawm qhov pib theem, thiab tom qab ntawd dissolves thaum txias. Ob txoj hauv kev tau piav raws li nram qab no:
1), ntxiv 1/3 lossis 2/3 ntawm cov nyiaj uas yuav tsum muaj ntawm cov dej, thiab ua kom sov rau ntawm 7), 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.
2) Tso 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. Muaj ob peb hom hydroxypropyl methylcellose HPMC. Dab tsi yog qhov sib txawv ntawm lawv cov kev siv?
Teb: HydroxyPropyyl methylcellose HPMC tuaj yeem faib ua cov hom hom tseem ceeb thiab kev kub. Cov khoom lag luam tam sim ntawd nrawm nrawm 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, tsis muaj yaj tiag 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 lub ntsiab ntawv thov ntawm hydroxypropyl methylcelulose (HPMC)?
Teb: HPMC tau siv dav hauv cov khoom 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 faib ua: Qib Kev Tsim Kho Qib, Khoom Noj Qib Qib thiab Tshuaj Muaj Tshuaj raws li siv. 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.
4. Yuav ua li cas thiaj li txiav txim siab qhov zoo ntawm hydroxyprropal methylcellose (HPMC) tsuas yog thiab intuitively?
Teb: (1) Tshwj xeeb lub ntiajteb txawj nqus: qhov loj dua qhov kev nqus tshwj xeeb, qhov hnyav dua qhov zoo dua. Qhov piv yog loj, feem ntau vim tias
(2) whiteness: tsis tuaj yeem txiav txim siab vim 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.
(3) 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, qhov zoo dua nws yog feem ntau.
(4) Kev Hloov Teeb Meem: Tso HydroxyPropyf Metylcellose (HPMC) rau hauv dej los ua ib qho kev hloov pauv coloid, thiab xyuas nws cov kev hloov pauv ntawm kev pauv. Lub siab dua lub teeb kev hloov pauv, qhov zoo dua, qhia tias muaj tsawg dua insolubles hauv nws. Cov. Lub erveability ntawm txoj kab ntsug feem ntau yog qhov zoo, thiab nws tsis txhais tau tias qhov zoo tshaj reactor, thiab muaj ntau yam los txiav txim cov khoom lag luam zoo Cov. Cov ntsiab lus ntawm Hydroxypropyl Group hauv nws yog siab, thiab cov ntsiab lus ntawm hydroxypropropyl yog qhov siab, thiab cov dej khaws cia zoo dua.
5. Dab tsi yog cov ntsuas ntsuas tseem ceeb ntawm hydroxypropyl metthylculose (HPMC)?
Teb: Hydroxypropsyl 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. Siab viscosity, cov dej tuav tseg, kuj yog (ntau dua li
6. Dab tsi yog qhov tsim nyog viscosity ntawm hydroxypropyl methylulose (HPMC)?
Teb: putty hmoov feem ntau yog feem ntau 100,000 yuan, thiab cov cai rau tshuaj khib tau siab dua, thiab nws yooj yim siv 150,000 Yuan. 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. Kiag li) kuj tseem zoo dua, thiab cov viscosity yog siab dua, thiab nws yog qhov zoo dua rau kev siv nyob rau hauv xis mas.
7. Dab tsi yog cov ntaub ntawv nyoos ntawm hydroxypropyl methylcelulose (HPMC)?
Teb: Lub ntsiab raw cov ntaub ntawv raw ntawm hydroxypropylulose (HPMC): Kev ua kom zoo nkauj, cov kua txiv me, acid, isopropanol, thiab lwm yam.
8. Dab tsi yog qhov muaj nuj nqi tseem ceeb ntawm daim ntawv teev HPMC hauv cov hmoov putty, thiab nws puas tshwm sim chemically?
Teb: 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.
9. HPMC yog cov tsis-ionic cellulose ether, yog li dab tsi tsis yog-ionic?
Teb: Nyob rau hauv Layman cov lus, tsis yog-ion yog ib yam khoom uas yuav 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.
10. Puas muaj kev sib raug zoo ntawm qhov poob ntawm cov hmoov putty thiab HPMC?
Teb: Cov hmoov poob ntawm cov hmoov putty yog feem ntau cuam tshuam nrog qhov zoo ntawm cov hmoov tshauv, thiab muaj me ntsis los ua nrog 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.
11. Dab tsi yog qhov kub thiab txias ntawm hydroxypropy kasthylcellulose rau?
Teb: Lub ntsuas kub ntawm HPMC muaj feem cuam tshuam nrog nws cov ntsiab lus methoxy, qis dua cov ntsiab lus methoxy ↓, qhov siab dua cov pa taws kub.
12. Yuav ua li cas xaiv qhov tsim nyog hydroxypropyyl methylculose (HPMC) rau cov hom phiaj sib txawv?
Teb: Daim ntawv thov ntawm Putty Hmoov: Qhov yuav tsum tau muaj tsawg, thiab viscosity yog 100,000, uas yog txaus. Qhov tseem ceeb tshaj plaws 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.
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?
Teb: 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)?
Teb: HPMC ua los ntawm cov txheej txheem daws teeb meem siv Toluene thiab isopropanol li cov kuab tshuaj. Yog hais tias ntxuav tsis zoo heev, yuav muaj qee cov ntxhiab tsw.
15. Dab tsi yog lwm lub npe rau hydroxypropyl methylulose?
Teb: HydroxyPropy cellulose, Lus Askiv: HydroxyPropyl Methylropy: HPMC lossis MHPC Alias: Hypromellose; Cellulose hydroxypropyl methyl ether; Hypromellose, cellulose, 2-hydroxypropyl methyl cellulose ether. Cellulose hydroxypropyl methylety ether ether.
16. Dab tsi yuav tsum tau them nyiaj rau hauv qhov kev thov tiag tiag ntawm kev sib raug zoo ntawm viscosity thiab qhov kub ntawm HPMC?
Teb: Lub viscosity ntawm HPMC yog inversely proportional rau qhov kub, uas yog hais, viscosity nce raws 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 dej zoo khaws cia. Siab viscosity: 150000-200000 siv rau polystyrene particle rollow fromment flouring hmoov thiab vitrified micral dethouring cug. Vim li cas: siab viscosity, tshuaj khib tsis yooj yim kom poob, dai, thiab txhim kho kev tsim kho.
17. Daim ntawv thov ntawm HPMC hauv cov hmoov putty, yog vim li cas rau lub npuas hauv cov hmoov noj ua noj?
Teb: 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.
Lub Sijhawm Post: Jan-13-2023