HPMC nyob rau hauv Skim tsho tiv no

HydroxyPropylropyl cellulose (HPMC) Viscosity rau Skim tsho tiv no?

- Teb: skim tsho tiv no yog OK HPMC 100000CPS, qee qhov siab dua ntawm cov kev yuav tsum tau ua rau cov tshuaj khib, xav tau 150000cap muaj peev xwm siv. Ntxiv mus, HPMC yog lub luag haujlwm tseem ceeb tshaj plaws ntawm dej tuav cia, ua raws li thickening. Hauv Skim tsho tiv no, tsuav yog cov dej khaws cia yog qhov zoo, lub viscosity yog qhov loj dua, cov txheeb ze cov dej yuav zoo dua, thaum lub viscosity yog ntau tshaj 100 txhiab, lub viscosity ntawm dej khaws cia yog tsis ntau.

Dab tsi yog cov ntsuas ntsuas tseem ceeb ntawm hydroxypropyl cellulose (HPMC)?

Teb: Hydroxyproprotsl cov ntsiab lus thiab viscosity, feem ntau cov neeg siv kev saib xyuas txog ob qhov ntsuas no. Hydroxypropyl cov ntsiab lus yog qhov siab, dej khaws cia yog feem ntau zoo dua. Viscosity, dej tuav, txheeb ze (tab sis tsis paub meej) kuj zoo dua, thiab viscosity zoo dua rau siv qee qhov.

HydroxyPropylropropy cellulose (HPMC) Dab tsi yog cov khoom siv raw tseem ceeb?

Teb: HydroxyPropyL methyl cellulose (HPMC) lub suab paj nruag tseem ceeb, tshuaj ntsuab, acid, isopropyl cawv thiab lwm yam.

HPMC nyob rau hauv Skim tsho tiv no hauv daim ntawv thov, lub luag haujlwm tseem ceeb, txawm tias muaj tshuaj?

Teb: HPMC nyob rau hauv Skim tsho tiv no, thickening, dej thiab kev tsim kho peb lub luag haujlwm. Thickening: cellulose tuaj yeem ua kom tuab rau kev ncua, yog li txoj kev daws teeb meem tseem hnav ris tsho thiab nce lub luag haujlwm ntawm kev tua neeg khiav tawm. Dej khaws cia: Ua rau skim lub tsho tiv no qhuav maj mam, tso saib cov tshuaj ntsuab hauv qhov kev txiav txim ntawm cov dej tawm. Kev tsim kho: cellulose lubrication, tuaj yeem ua kom lub tsho tiv no skim muaj kev tsim kho zoo. HPMC tsis koom nrog kev siv tshuaj lom neeg, tab sis tsuas yog ua lub luag haujlwm txhawb nqa. Skim tsho thiab dej, ntawm phab ntsa, yog cov tshuaj lom neeg, vim tias ntawm cov khoom siv ntawm cov khoom tshiab, thiab tom qab ntawd siv, tsis zoo, vim tias tau tsim ib qho khoom tshiab (calcium carbonate). Lub Cheebtsam tseem ceeb ntawm grey calcium hmoov yog: Ca (OHO thiab ib qho me me ntawm CaCo3 CA (OH) 2 ↓ + h2o grey calcium hauv dej thiab huab cua nyob rau hauv kev txiav txim ntawm CO2, tsim cov calcium carbonate, thiab hpmc tsuas yog carbonate, nws tsis koom nrog cov tshuaj tiv thaiv dab tsi.

HPMC yog tsis-iona cellulose ether, yog li dab tsi tsis yog-ionic?

A: Feem ntau hais lus, tsis yog ions cov tshuaj uas tsis ionize hauv dej. Ionatization yog qhov sib cais ntawm cov electrolyte rau hauv kev hloov pauv dawb. Piv txwv li, cov ntsev peb noj txhua txhua hnub - sodium chloride (nacl) yaj tawm sodium-txav mus los thiab chloride zoo thiab cle) nrog tus nqi tsis zoo. Ntawd yog, HPMC nyob rau hauv dej tsis cuam tshuam rau kev them nqi, tab sis muaj li molecules.

Dab tsi yog qhov gelation kub ntawm hydroxypropyl methyl cellulose ntsig txog?

Teb: Lub ntsuas kub ntawm HPMC muaj feem cuam tshuam nrog cov ntsiab lus methoxyl. Qhov qis dua cov ntsiab lus methoxyl yog, qhov ntau dua cov pa kub thiab txias dua.

Skim tsho tiv no hmoov thiab HPMC tsis muaj kev sib raug zoo?

Teb: skim tsho tiv no hmoov tsuas yog thiab cov tshauv calcium zoo muaj kev sib raug zoo heev, thiab HPMC tsis muaj kev sib raug zoo dhau. Cov ntsiab lus tsawg dua ntawm cov ntsiab lus muaj calcium thiab cov tshuaj tsis raug cai ntawm Cao thiab Ca (Oh) 2 hauv grey calcium yuav ua rau hmoov ntsuab. Yog tias muaj kev sib raug zoo nrog HPMC, ces cov dej tsis zoo khaws cia HPMC yuav ua rau hmoov hmoov hmoov.

Dab tsi yog qhov sib txawv ntawm dej txias soluble thiab kub soluble hydroxypropyl cellulose hauv cov txheej txheem ntau lawm?

- Teb: HPMC txias dej Instant kua hom yog tom qab kev kho mob glyox nrawm, tab sis tsis yog tiag tiag li, tab sis yuav txawv, yog yaj. Lub thermosoluble hom tsis tau raug kho saum npoo nrog glyoxal. Tus nqi ntawm glyoxal yog loj, qhov dispersion yog nrawm, tab sis cov viscosity yog qeeb, tus nqi me me, ntawm qhov tsis tooj.

Dab tsi yog nws txog hydroxypropyl methyl cellulose (HPMC) qhov kev hnov ​​tsw?

- Teb: HPMC tsim los ntawm kev daws txoj kev yog ua los ntawm toluene thiab isopropyl cawv. Yog hais tias ntxuav tsis zoo heev, yuav muaj qee qhov chaw seem.

Cov kev siv sib txawv, yuav ua li cas xaiv qhov tsim nyog hydroxypropyl methyl cellulose (HPMC)?

- Teb: Yuav tsum dhuav nrog daim ntawv thov ntawm tus menyuam hmoov: qhov yuav tsum tau yog qis dua, viscosity 100000, nws yog ib qho tseem ceeb kom tiv thaiv dej yuav tsum tau ze rau. Tshuaj daim ntawv thov tshuaj txhuam: cov yuav tsum muaj dua, muaj cov viscosity siab, 150000 kom ua tau zoo dua. Cov ntawv thov kua nplaum: Qhov kev xav tau rau cov khoom lag luam tam sim ntawd, siab viscosity.

Dab tsi yog lwm lub npe rau hydroxypropyl methyl cellulose?

- Teb: HydroxyPropyyl methylulose, sau ntawv luv li HPMC lossis MHPC, lossis hydroxypropyl methyl cellulose; Cellulose hydroxypropyl methyl ether; Hypromellose, cellulose, 2-hydroxypropyl methyl cellulose ether.

HPMC nyob rau hauv daim ntawv thov Skim tsho tiv no, dab tsi vim li cas skim tsho tiv no npuas?

Teb: HPMC nyob rau hauv Skim tsho tiv no, thickening, dej thiab kev tsim kho peb lub luag haujlwm. Tsis koom nrog yam tshuaj tiv thaiv. Cov ua rau cov npuas: 1, dej ntau dhau. 2, hauv qab yog tsis qhuav, nyob rau sab saum toj ntawm txheej scraping txheej, kuj yooj yim rau blister.

Sab hauv thiab sab nraud phab ntsa skim tsho tiv no lub tsho tiv no?

- Teb: Sab hauv phab ntsa skim tsho tiv no: Calcium 800KG Grey Calcium 150 Grey ether, ntshiab ntsuab, peng roltu, citricy acid, polyacrylamide tuaj yeem txuas ntxiv)

Phab Ntsa Ntsoov Sab Nraud: Maas 350kg Qhatz Xuab zeb 500kg Cellulose Ethaws ether 3kg Wood Fiber 2kg

Dab tsi yog qhov txawv ntawm HPMC thiab MC?

- Teb: MC yog methyl cellulose, uas yog ua los ntawm cellulose ether los ntawm kev tawm tsam methane tshuaj ntsuab tom qab kho suab paj rwb yog kho nrog alkali. Feem ntau, cov qib degree hloov tau yog 1.6 ~ 2.0, thiab lub solubility sib txawv nrog cov qib hloov pauv. Belongs rau nousionic 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 ntxiv cov nyiaj loj, me me, viscosity, retient tus nqi yog siab. Ntawm lawv, tus nqi ntawm kev cuam tshuam muaj qhov cuam tshuam zoo tshaj plaws ntawm cov dej khaws cia, thiab viscosity tsis yog ib feem ntawm cov dej khaws cia. Qhov kev sib cais zuj zus feem ntau yog nyob ntawm qhov kev hloov kho deg degree thiab particle zoo kawg ntawm cellulose sau. Nyob rau hauv cov kev hais ua ke saum toj no ob peb cellulose muaj kev hais txog, methyl cellulose thiab hydroxypropy cellulose dej tus nqi qis dua.

(2) Methyl cellulose yog soluble hauv dej txias, uas yog qhov nyuaj rau yaj hauv dej kub. Nws cov kev daws teeb meem aqueous yog ruaj khov nyob rau hauv lub ph = 3 ~ 12. Nws muaj qhov sib xyaw zoo nrog cov hmoov txhuv nplej siab, cov pos hniav guanidine thiab ntau surfactants. Gelation tshwm sim thaum qhov kub tau txog gelation kub.

(3) Cov kev hloov pauv ntawm qhov kub yuav cuam tshuam rau cov dej tswj hwm ntawm methyl cellulose. Feem ntau, qhov ntsuas kub siab dua, qhov tsis zoo ntawm cov dej khaws cia. Yog tias qhov ntsuas kub ntawm txoj kab pheeb suab tshaj 40 ℃, dej tuav tseg ntawm methyl cellulose yuav muaj kev phem zog, uas cuam tshuam rau cov cug cug.

(4) Methyl cellulose tau pom meej meej rau ntawm kev ua kom huv thiab nplaum ntawm cug. "Adhesion" ntawm no yog hais txog cov adhesion xav los ntawm tus neeg ua haujlwm ntawm lub cuab yeej thiab lub phab ntsa substrate, uas yog lub shear tsis kam ntawm lub cug. Adhesion loj, lub shear kuj ntawm cug cug yog loj, lub zog uas yuav tsum tau los ntawm cov neeg ua haujlwm ntawm cov neeg ua haujlwm ntawm cov txheej txheem kuj tseem loj, thiab kev siv tshuaj khib ntawm cug tsis zoo. Hauv cellulose ether khoom, cov nplaum ntawm methyl cellulose yog nyob rau theem qib.

HPMC HydroxyPropyl cellulose, yog kho kom zoo nkauj tom qab kev kho mob alkali, nrog rau tus neeg sawv cev alkali, los ntawm cov tshuaj tiv thaiv kab mob alkali, los ntawm kev sib xyaw ntawm cov tshuaj uas tsis yog ether. Qib degree hloov chaw yog feem ntau 1.2 ~ 2.0. Nws cov khoom sib txawv nrog kev faib ua feem ntawm methoxy thiab hydroxypropropsyl cov ntsiab lus.

(1) HydroxyPropyyl methyl cellulose yog yooj yim soluble hauv dej txias, uas yog qhov nyuaj rau yaj hauv dej kub. Txawm li cas los xij, nws cov gelation ntsuas kub hauv dej kub yog qhov siab dua li ntawm methyl cellulose. Lub solubility ntawm methyl cellulose hauv dej txias kuj tseem txhim kho ntau heev.

(2) Lub viscosity ntawm hydroxypropyl cellulose muaj feem xyuam rau nws cov molecular hnyav, thiab ntau dua molecular hnyav, ntau dua viscosity. Kub kuj cuam tshuam rau viscosity. Viscosity txo li kub nce ntxiv. Tab sis nws viscosity cov nyhuv kub yog qis dua li methyl cellulose. Cov kev daws teeb meem yog ruaj khov thaum khaws cia ntawm chav tsev kub.

(3) HydroxyPropyl cellulose yog ruaj khov rau cov kua qaub thiab puag, 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 khoom, tab sis alkali tuaj yeem nrawm nws cov kev cais tawm thiab txhim kho lub viscosity. Hydroxypropyl cellulose yog ruaj khov rau cov ntsev dav dav, tab sis thaum cov viscrot ntawm hydroxypropyl cellulose kev daws teeb meem loj.

(4) Cov dej ua kom muaj zog ntawm hydroxypropyl cellulose yog nyob ntawm nws cov tshuaj thiab cov dej khaws cia siab dua li ntawm methyl cellulose ntawm tib cov tshuaj.

(5) HydroxyPropylropy Cellulose tuaj yeem sib xyaw nrog dej-soluble polymer sib txuas ua ke los ua cov ris tsho zoo nkauj, muaj txiaj ntsig viscosity daws. Xws li kev haus dej cawv polyvinyl, cov hmoov txhuv nplej siab ether, zaub kua nplaum thiab lwm yam.

(6) cov nplaum ntawm hydroxypropyl cellulose rau tshuaj kho kom zoo siab dua li methyl cellulose.

(7) Hydroxypropyl cellulose muaj cov enzyme tsis tshua muaj dua li methyl cellulation muaj peev xwm qis dua li methyl cellulose.

Dab tsi yuav tsum tau them nyiaj rau hauv kev siv tswv yim txog kev sib raug zoo ntawm viscosity thiab qhov kub ntawm HPMC?

Teb: Lub viscosity ntawm HPMC yog inversely proportional kom kub, uas yog hais, viscosity nce nrog qhov txo qis ntawm qhov kub. Thaum peb tham txog cov khoom viscosity ntawm cov khoom, peb tab tom tham txog viscosity ntawm 2% ntawm cov khoom hauv dej ntawm 20 degrees Celsius.

Hauv cov tswv yim thov, hauv cov cheeb tsam nrog cov loj sib txawv ntawm lub caij ntuj sov thiab lub caij ntuj no, nws yuav tsum tau siv cov viscosity tsis tshua muaj zog nyob rau lub caij ntuj no, uas yog qhov tseem ceeb rau kev tsim kho. Txwv tsis pub, thaum ntsuas kub yog tsawg, viscosity ntawm cellulose yuav nce ntxiv, thiab thaum scraping, qhov kev xav yuav hnyav.

Nruab nrab viscosity: 75000-100000 tsuas yog siv rau putty

Vim li cas: Cov Dej Zoo

Siab viscosity: HPMC 150000-20000-200000 siv rau polystyraple particle particing hmoov khoom thiab vitrified beads rwb thaiv tsev.

Vim li cas: siab viscosity, tshuaj khib tsis yooj yim kom poob, ntws dai, txhim kho kev tsim kho.

Tab sis feem ntau hais lus, qhov zoo dua cov dej ua kom zoo, muaj ntau cov corccos and low-1-1 cellws thiab qis viscosity hpmc cellulose (20000-40000) los txo tus nqi ntxiv.