Sib tham txog hydroxypropal methyl cellulose

1. Dab tsi yog lub hom phiaj tseem ceeb ntawm hydroxypropyl methylcelulose (HPMC)?
--A: HPMC tau siv dav hauv cov khoom siv hauv tsev, 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 Khoom raws li lub hom phiaj. Tam sim no, feem ntau ntawm cov khoom lag luam yog cov qib kev tsim kho. Nyob rau qib kev tsim kho, tus nqi ntawm cov hmoov putty yog qhov loj heev, txog 90% yog siv rau cov hmoov putty, thiab tus so yog siv rau cug cug thiab kua nplaum.
2. Muaj ob peb hom hydroxypropyl methylcellose (HPMC), thiab dab tsi yog qhov sib txawv hauv lawv cov kev siv?
- HPMC tuaj yeem muab faib ua cov hom hom tseem ceeb thiab kub. Instant-hom khoom tawg tawm sai sai 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 thiab tsis muaj kev sib cav tiag. Tom qab txog 2 feeb, lub viscosity ntawm cov kua maj mam nce, sib sau ua pob tshab viscous colloid. Kub-distrolving cov khoom, thaum ntsib dej txias, tuaj yeem nrawm nrawm hauv dej kub thiab ploj hauv dej kub. Thaum qhov kub thiab txias rau qhov kub thiab txias, maj mam pom maj mam tshwm sim kom txog thaum lub pob tshab viscous colloid yog tsim. 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, clumping promomenon yuav 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 hauv cov kua nplaum ua kua thiab pleev xim, tsis muaj cov contraindications.

3. Dab tsi yog cov kev sib cais ntawm hydroxypropyl methylcelulose (HPMC)?
- Aanswer: Dej kub xaus txoj kev: Txij li HPMC tsis yog yaj nyob rau hauv dej kub thiab tom qab ntawd ua kom sai thaum txias. Ob txoj hauv kev tau piav raws li nram qab no:
1) Muab cov dej kub uas yuav tsum muaj dej kub hauv lub thawv thiab cua sov nws txog 70 ° C. Lub HydroxyPropyf methylcellulose tau maj mam ntxiv nrog qeeb stirring, thiab tom qab ntawd maj mam tsim ib qho slurry, uas tau txias nrog nplawm.
2), ntxiv 1/3 lossis 2/3 ntawm qhov yuav tsum tau dej rau hauv lub thawv, thiab ua kom sov rau ntawm lub sijhawm 1), Disperse HPMC, npaj cov dej ntws qeeb; Tom qab ntawd ntxiv cov dej txias rau dej txias rau cov dej kub hauv cov slurry, cov sib tov tau txias tom qab nplawm.

Hmoov sib xyaw txoj kev: Sib tov HPMC hmoov nrog cov khoom loj ntawm lwm cov hmoov av, thiab tom qab ntawd HPMC tuaj yeem yaj ua ke, thiab tom qab ntawd tsuas yog HPMC me ntsis hauv txhua lub kaum me me. Cov hmoov yuav yaj tawm tam sim ntawd hauv kev sib cuag nrog dej. - Lub hau kev yog siv los ntawm kev siv hmoov thiab tshuaj cug tuam ntxhab. [Hydroxypropyl methylcellose (HPMC) yog siv los ua cov thickener thiab dej-khaws cov neeg sawv cev hauv ncoo hmoov. ]

4. Yuav ua li cas thiaj li txiav txim siab qhov zoo ntawm hydroxyprropal methylcellose (HPMC) tsuas yog thiab intuitively?
- Guiteness: (1) whiteness: tsis tuaj yeem txiav txim siab seb puas yooj yim siv, thiab yog tias muaj zog ntxiv rau cov txheej txheem ntau lawm, 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 yog 80 mesh thiab 100 mesh, thiab 120 mesh tsawg dua. Feem ntau ntawm HPMC tsim hauv Hebei yog 80 mesh. Tus finer lub fineness, qhov zoo dua. (3) Kev hloov pauv tau: Tso hydroxypropylulose (HPMC) nyob rau hauv dej los ua ib tug pob tshab Colloid, thiab xyuas nws cov kev hloov pauv. Qhov siab dua qhov kev hloov pauv, qhov zoo dua, qhia tias muaj cov tshuaj tsis muaj roj nyob hauv nws. Lub permeability ntawm txoj kev ntsug yog feem ntau zoo, tab sis nws tsis tuaj yeem hais tau zoo dua li tias ntawm cov kab rov tav reactor, thiab muaj ntau yam khoom siv ua tau zoo. (4) Qhov Loj Tshaj Plaws: Qhov loj dua qhov sib tsoo tshwj xeeb, qhov hnyav dua qhov zoo dua. Qhov tshwj xeeb nqus tau loj, feem ntau vim tias cov ntsiab lus hydroxypropyl hauv nws siab, thiab cov dej ua ke yog qhov zoo dua.

5. Tus nqi ntawm hydroxypropyl methylcellose (HPMC) hauv hmoov putty?
- Tus nqi HPMC siv nyob rau hauv cov ntawv thov tswv yim txawv nyob ntawm cov huab cua, qhov chaw ntawm cov hmoov txhuas tsis zoo thiab cov neeg siv khoom "zoo". Feem ntau hais lus, nws yog 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;

6. Dab tsi yog qhov tsim nyog viscosity ntawm hydroxypropyl methylulose (HPMC)?
- Luj tshuaj: Putty hmoov feem ntau yog feem ntau 100,000 yuan, thiab tshuaj khib yog xav tau ntau dua, thiab nws yooj yim los siv ntawm 150,000 Yuan. Ntxiv mus, lub luag haujlwm tseem ceeb tshaj plaws ntawm HPMC yog los khaws dej, ua raws li thickening. Hauv cov hmoov putty, tsuav li lub taub dej ceev yog qhov zoo thiab lub viscosity yog qis dua (70,000-80,000), nws tseem ua tau. Ntawm chav kawm, lub viscosity yog siab dua, thiab cov txheeb ze cov dej rov qab yog qhov zoo dua. Thaum lub viscosity tshaj 100,000, cov txiaj ntsig ntawm viscosity ntawm dej khaws cia tsis ntau.

7. Dab tsi yog cov ntsuas ntsuas tseem ceeb ntawm hydroxypropylropeny (HPMC)?
Aanswer: Hydroxypropropyl cov ntsiab lus thiab viscosity, feem ntau cov neeg siv kev saib xyuas txog ob qhov ntsuas no. Lub siab dua cov ntsiab lus hydroxypropyl, qhov zoo dua cov dej khaws cia. Cov viscosity siab, kev siv dej siab, feem ntau (tsis yog abusute) zoo dua, thiab muaj viscosity siab, zoo dua siv hauv xis mas cug.

8. Dab tsi yog cov ntaub ntawv nyoos ntawm hydroxypropyl methylcelulose (HPMC)?
- A: Lub ntsiab raw cov ntaub ntawv raw ntawm hydroxypropylulose (HPMC): tshuaj raws muaj xws li flake alkali, acid, yog toluene, isopropanol, thiab lwm yam.

9. Lub luag haujlwm ntawm HPMC yog dab tsi hauv kev thov ntawm cov hmoov uas muaj zaub mov, thiab puas muaj kev siv tshuaj?
- HPMC muaj peb lub zog ntawm thickening, dej tuav thiab tsim kho hauv cov hmoov ua kom muaj hmoov. Thickening: cellulose tuaj yeem ua tuab rau ncua, ua kom cov kev daws teeb meem thiab xwm yeem, thiab tiv taus sagging. Dej khaws cia: Ua kom cov hmoov noj kom qhuav, thiab pab cov tshuaj tiv thaiv hmoov tshauv hauv qab dej. Kev tsim kho: Cellulose muaj cov nyhuv muaj lubricating nyhuv, uas tuaj yeem ua rau cov hmoov puty muaj cov haujlwm zoo. HPMC tsis koom nrog kev tshuaj tiv thaiv tshuaj thiab tsuas yog ua lub luag haujlwm ntawm lub luag haujlwm. Ntxiv cov dej rau cov hmoov putty thiab muab tso rau ntawm phab ntsa yog tshuaj lom neeg. Vim tias tsim ntawm cov tshuaj tshiab, nqa cov hmoov nplej rau ntawm phab ntsa tawm ntawm phab ntsa, zom nws mus rau hauv cov hmoov, thiab siv nws dua. Nws yuav tsis ua haujlwm, vim tias cov tshuaj tshiab (calcium carbonate) tau tsim. . Lub ntsiab Cheebtsam ntawm cov hmoov tshauv calcium hmoov yog: sib xyaw ntawm Ca (Oho thiab tus mob H2O, CA (OH) 2 + CA (OH)

10. HPMC yog tsis-iona cellulose ether, yog li dab tsi tsis-ionic?
- Teb: Nyob rau hauv Layman cov lus, tsis yog cov tshuaj ntsuab yog cov tshuaj uas tsis ionize hauv dej. Ionization hais txog cov txheej txheem uas ib qho electrolyte rau hauv kev hloov pauv dawb uas txav mus los rau hauv cov kuab tshuaj tshwj xeeb (xws li dej, cawv). Piv txwv li, sodium chloride (NACL), cov ntsev noj nyob rau hauv dej thiab ionolves los tsim dawb sodium ions (na) uas yog qhov tsis zoo. Ntawd yog, thaum HPMC tau muab tso rau hauv dej, nws tsis muaj kev sib cais rau hauv kev them nyiaj, tab sis muaj nyob rau hauv daim ntawv ntawm lwg me me.

11. Dab tsi yog qhov kub thiab txias ntawm hydroxypropy kasthylcellulose rau?
A: Qhov kub ntawm HPMC muaj feem cuam tshuam nrog nws cov ntsiab lus methoxy, qis dua ntawm cov ntsiab lus methoxy ↓, qhov ntau dua cov pa taws kub ntau dua ↑.

12. Puas yog cov hmoov poob ntawm cov hmoov putty muaj dab tsi ua nrog HPMC?
--Swerer: 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 nrog HPMC. Cov ntsiab lus tsawg calcium cov ntsiab lus ntawm cov ntug dej tshauv thiab cov kev sib piv tsis tsim nyog ntawm Cao thiab Ca (Oh) 2 hauv cov hmoov tshauv yuav ua rau hmoov. Yog tias nws muaj qee yam ua nrog HPMC, tom qab ntawd cov dej tsis zoo ntawm HPMC yuav ua rau hmoov hmoov. Rau cov laj thawj tshwj xeeb, thov saib cov lus nug 9.

13. Dab tsi yog qhov sib txawv ntawm cov dej txias tam sim thiab cov kub soluble hom ntawm hydroxypropylenculose hauv cov txheej txheem ntau lawm?
- Geranswer: lub dej txias tam sim ntawm HPMC yog cov npoo--kho nrog glyoxal, thiab nws tau nrawm nrawm hauv dej txias, tab sis nws tsis yog yaj. Thaum lub viscosity nce, nws yog yaj. Lub kub yaj tsis yog tsis nto kho nrog glyoxal. Yog tias tus nqi ntawm glyoxal yog loj, qhov dispersion yuav tau nrawm, tab sis cov viscosity yuav nce qeeb, thiab rov qab yuav thaum tus nqi ntawm glyoxal yog me me.

14. Dab tsi yog cov ntxhiab tsw ntawm hydroxypropyl methylcellose (HPMC)?
- HPMC ua los ntawm cov txheej txheem hnyav siv tau toluene thiab isopropanol yog cov kuab tshuaj. Yog hais tias ntxuav tsis zoo heev, yuav muaj qee qhov chaw seem.

15. Yuav ua li cas xaiv hydroxypropyl methylculose (HPMC) rau cov hom phiaj sib txawv?
Lub npe: Daim ntawv thov ntawm Putty Hmoov: Qhov kev xav tau yog qhov tsawg, viscosity yog 100,000, nws yog qhov tseem ceeb, qhov tseem ceeb yog khaws cov dej kom zoo. Daim ntawv thov ntawm cug: qhov yuav tsum tau ua, siab viscosity, 150,000 yog qhov zoo dua. Daim ntawv thov ntawm cov kua nplaum: xav tau cov khoom sai, siab viscosity.

16. Dab tsi yog lub npe ntawm hydroxypropyl methylulose?
- Hydroxypropy cellulose, Lus Askiv Cellulose, Lus Askiv: HydroxyPropy Cellulose Pletrigiation: 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 putty?
- HPMC muaj peb lub zog ntawm thickening, dej tuav thiab tsim kho hauv cov hmoov ua kom muaj hmoov. Tsis koom nrog ib qho tshuaj tiv thaiv twg. Cov laj thawj rau lub npuas: 1. Cov dej ntau dhau yog muab tso rau. 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?
- Aanswer: Sab hauv phab ntsa Putty W hmoov: hnyav calcium 800kg, cov hmoov av ether, ntshiab ntsuab, pengro acid, thiab lwm yam. Txuas ntxiv)
Phab ntsa sab nraud Putty W hmoov: Maas PC50kg, Quartz Xuab zeb 500kg, latterz xuab zeb 5kg, wood ether 0.5kg, ntoo fiber 2kg

19. Dab tsi yog qhov sib txawv ntawm HPMC thiab MC?
A: MC yog methyl cellulose, uas yog ua los ntawm kev kho cov paj rwb nrog alkali, siv colorinated methane, thiab ua kom cov neeg sawv cev ether kom dhau los ntawm kev tshaj lij. Feem ntau, cov qib degree hloov tau yog 1.6 ~ 2.0, thiab solubility kuj txawv degrees ntawm kev hloov pauv sib txawv. Belongs 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 tus nqi ntxiv yog qhov loj, lub fineness yog me me, thiab viscosity yog qhov loj, dej tswj hwm tau loj. Ntawm lawv, tus nqi ntawm kev ntxiv yog qhov cuam tshuam loj tshaj plaws ntawm cov dej khaws cia, thiab theem ntawm viscosity tsis yog ib feem ntawm cov qib ntawm cov dej khaws cia. Tus lej sib cais feem ntau yog nyob ntawm cov kev hloov kho ntawm qhov chaw ntawm cov cellulose ntawm lub cellulose sau thiab lub txiaj ntsig ntawm cov hais. 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, tab sis nyuaj kom yaj hauv dej kub, thiab nws cov kua aqueous yog qhov ruaj khov heev hauv cov 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, qhov tshwm sim ntawm gelation tshwm sim.
(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 cug cug Kub tshaj 40 ° C, cov dej tuav ntawm methyl cellulose yuav cuam tshuam rau kev ua haujlwm ntawm lub cug.
(4) Methyl Cellulose muaj qhov cuam tshuam tseem ceeb ntawm kev ua haujlwm thiab cov nplaum ntawm cug. "Adhesion" ntawm no yog hais txog cov adhesion 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 loj yog qhov loj, cov shear tiv thaiv ntawm lub tshuaj khib nyiab yog cov neeg ua haujlwm loj, thiab kev tsim kho ntawm lub tshuaj khib yog neeg pluag. Methylcellulose adhesion yog nyob rau theem theem hauv cellulose ether.

HPMC yog hydroxypropyl cellulose, uas yog cov kev kho mob ntawm etic uas npaj los ntawm kev kho suab paj rwb, siv cov tshuaj pleev cov epylene thiab methylene. Qib degree hloov chaw yog feem ntau 1.2 txog 2.0. Nws cov khoom sib txawv raws li kev faib ua feem ntawm methoxyl cov ntsiab lus thiab hydroxypropropyl cov ntsiab lus.
(1) HydroxyPropropy yog methylcellulose yog yooj yim soluble hauv dej txias, tab sis 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. Kev sib cais hauv dej txias kuj tseem txhim kho piv nrog methyl cellulose.
(2) HydroxyPropyyl methylulose yog ruaj khov rau cov 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 qhov kev sib cais thiab nce viscosity. HydroxyPropyyl methylulose yog ruaj khov rau cov ntsev uas zoo, tab sis thaum cov ntsev daws yog qhov siab, lub viscosposyl methylulose kev daws teeb meem.
(3) HydroxyPropropy Metylcellulose tuaj yeem sib xyaw nrog cov dej-soluble polymer sib xyaw ua ke los ua kev daws teeb meem nrog kev sib xyaw thiab muaj zog viscosity. Xws li cov dej cawv polyvinyl, cov hmoov txhuv nplej siab ether, zaub cov pos hniav, thiab lwm yam.
(4) Cov nplaum ntawm hydroxypropyl methylcellulose rau tshuaj tshuaj kho yog siab tshaj li methylcellulose.
(5) HydroxyProproyl nrho methylcellose muaj cov enzyme tsis tuaj yeem tiv thaiv me me, thiab nws txoj kev daws teeb meem kev daws teeb meem tau qis dua li methylcellulose.

20. Dab tsi yuav tsum tau them nyiaj rau hauv kev siv cov ntaub ntawv thov ntawm kev sib raug zoo ntawm viscosity thiab qhov kub ntawm HPMC?
- Lub viscosity ntawm HPMC yog inversely proportional rau qhov kub, uas yog, viscosity nce li qhov ntsuas kub. Peb feem ntau yog hais txog cov khoom viscosity ntawm cov khoom, uas yog hais txog qhov kev sim ua ntawm nws 2% kev daws teeb meem ntawm qhov kub ntawm 20 degrees Celsius.

Hauv cov kev siv cov tswv yim, hauv thaj chaw muaj qhov sib txawv ntawm lub caij ntuj sov thiab lub caij ntuj no, nws yuav tsum tau pom zoo kom siv cov viscosity hauv lub caij ntuj no, uas yog qhov tseem ceeb dua rau kev tsim kho. Txwv tsis pub, thaum ntsuas kub yog tsawg, viscosity ntawm cellulose yuav nce, thiab thaum batch yog scraped, tes yuav hnyav.

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

Vim li cas: Cov Dej Zoo

Siab viscosity: 150000-200000 siv rau polystyrene particle rollow fromment flouring hmoov thiab vitrified micral dethouring cug.

Vim li cas: siab viscosity, cug cug tsis yooj yim rau poob, sag, thiab txhim kho kev tsim kho.

Tab sis feem ntau, ntau dua cov viscosity, qhov zoo dua cov dej khaws cia. Yog li no ntau cov kabke ntau cov captories xav txog tus nqi thiab hloov viscosity cellivose (20000-40000) nrog nruab nrab viscosity cellulose (75000-100000) txhawm rau txo tus nqi ntxiv. Cov.