HydroxyPropyyl Methylcellulose (HPMC)Yog kev hloov kho cov tshuaj kho ntawm cellulose uas tau siv dav hauv ntau yam kev lag luam xws li cov chaw ua tshuaj, khoom noj khoom haus, thiab kev tsim kho. Nws yog ib qho kev sib xyaw ntau ntxiv, feem ntau siv los ua cov tuab, phau ntawv, zaj duab xis-forming tus neeg sawv cev, thiab stabilizer. Txawm li cas los xij, nws tsis muaj ib qho tshwj xeeb "tus lej xov tooj" hauv kev nkag siab ib txwm, xws li cov khoom lag luam lossis cov naj npawb koj tuaj yeem pom hauv lwm cov ntsiab lus tsim khoom. Hloov chaw, HPMC tau txheeb xyuas los ntawm nws cov qauv tshuaj lom neeg thiab tus naj npawb ntawm cov yam ntxwv, xws li qib degrees hloov chaw thiab viscosity.
Cov ntaub ntawv dav dav hais txog hydroxypropyf methylcellulose (HPMC)
Tus qauv tshuaj lom neeg: HPMC yog tsim los ntawm kev kho cellulose cellulose los ntawm kev hloov ntawm hydroxylopyl thiab methyl pawg. Cov khoom hloov pauv hloov cov khoom siv ntawm cellulose, ua rau nws ntau soluble hauv cov khoom siv muaj peev xwm, thiab muaj peev xwm khaws cia ya raws.
Cov cim uas muaj nuj nqi thiab npe
Qhov kev paub txog ntawm HydroxypropylenChlulose feem ntau yog kev ntseeg ntawm ntau yam kev sib dhos ntawm cov kev sib tw uas piav qhia txog nws cov khoom siv tshuaj lom neeg:
Tus lej lej:
Cov tshuaj ARSTRACTION KEV PAB CUAM (CAS) muab lub cim cim rau txhua yam tshuaj lom neeg. Tus lej lej rau HydroxyPropyyl methylcelulose yog 9004-65-3. Qhov no yog tus naj npawb qauv siv los ntawm cov kws thev naus laus zis, cov neeg muab khoom, thiab kev tswj hwm lub cev xa mus rau cov khoom.
Inchi thiab Smiles Codes:
Inchi (Tus neeg tshuaj xyuas thoob ntiaj teb) yog lwm txoj hauv kev los sawv cev rau cov qauv tshuaj lom neeg ntawm cov tshuaj. HPMC yuav muaj txoj hlua ntev ntev uas sawv cev rau nws cov qauv molecular hauv cov qauv qauv.
Luag nyav (yooj yim molecular intampation kab nkag kab system) yog lwm qhov system siv los sawv cev cov lwg me me hauv ib daim ntawv. HPMC kuj muaj qhov luag nyav code, tab sis nws yuav yog txoj kev nyuaj vim yog qhov loj thiab txawv txav ntawm nws cov qauv.
Cov Khoom Qhia Khoom:
Hauv kev ua lag luam kev lag luam, HPMC feem ntau pom los ntawm cov lej khoom, uas tuaj yeem sib txawv los ntawm cov chaw tsim khoom. Piv txwv li, tus xa khoom yuav muaj qib li HPMC K4M lossis HPMC E15. Cov cim no feem ntau yog hais txog lub viscer ntawm kev daws, uas yog txiav txim siab los ntawm kev ua haujlwm methylation thiab hydroxyprodation nrog rau cov molecular hnyav.
Cov qib kawm nyob hauv hydroxypropyl methylcelulose (HPMC)
Cov yam ntxwv ntawm hydroxypropylulose sib txawv raws li cov degree ntawm kev hloov methyl thiab hydroxyprropyl, raws li lub cev molecular. Cov kev hloov pauv no txiav txim siab HPMC lub viscity thiab solubility hauv dej, uas nyeg cuam tshuam rau nws cov ntawv thov hauv ntau yam kev lag luam.
Hauv qab no yog lub rooj uas qhia cov qib sib txawv ntawm hydroxypropyl methylulose:
| Teem nqi | Viscosity (Cp hauv 2% Tshuaj) | Cov Ntawv Thov | Kev piav txog |
| HPMC K4M | 4000 - 6000 CP | Kws Tshuaj Khoo, Kev Lag Luam Khoom Noj Khoom Haus (Cov Khoom Noj) | Nruab nrab Viscosity qib, feem ntau siv nyob rau hauv cov ntsiav tshuaj ntawm qhov ncauj. |
| HPMC K100M | 100,000 - 150,000 CP | Kev tswj hwm cov yeeb yam hauv cov tshuaj, tsim kho, thiab xim pleev xim | Cov viscosity siab, zoo heev rau kev tswj cov tshuaj. |
| HPMC E4M | 3000 - 4500 CP | Cov tshuaj pleev ib ce, cov quav dej, kev ua zaub mov noj, cov nplaum, thiab txheej | Soluble hauv dej txias, siv nyob rau hauv cov khoom lag luam thiab khoom noj. |
| HPMC E15 | 15,000 CP | Tus neeg saib xyuas tuab rau cov xim tha xim, tsho dawb, khoom noj, thiab cov khoom lag luam | Cov viscosity siab, soluble hauv dej txias, siv hauv kev lag luam thiab cov khoom lag luam. |
| HPMC M4C M4C | 4000 - 6000 CP | Khoom noj khoom haus thiab dej haus ua kev lag luam ua lub stabilizer, kws tshuaj paus ua lub binder | Maum cov viscirecosity, feem ntau siv los ua cov tuab tuab hauv cov zaub mov tiav. |
| HPMC 2910 | 3000 - 6000 CP | Cov tshuaj pleev ib ce (cream, lotions), zaub mov (tshuab hluav taws xob (tshuab hluav taws xob), tshuaj (tsiav tshuaj, tsej) | Ib qho ntawm cov qib feem ntau, tau siv los ua kev ruaj khov thiab cov neeg saib xyuas tuab. |
| HPMC 2208 | 5000 - 15000 CP | Siv hauv cov cement thiab plaster formative, textiles, ntawv txheej txheej | Zoo rau cov ntawv thov uas xav tau cov khoom ua yeeb yaj kiab zoo tshaj plaws. |
Cov ncauj lus kom ntxaws muaj pes tsawg leeg thiab cov khoom ntawm HPMC
Lub zog ntawm lub cev ntawm hydroxypropyl ntawm cov methylcellose nyob rau ntawm qhov ntawm cov ntawm cov pab pawg hydroxyl hauv cov cellulose molecule. Ntawm no yog cov khoom loj:
Qib ntawm kev hloov pauv (DS):
Qhov no hais txog pes tsawg tus pab pawg hydroxyl hauv cellulose tau hloov los ntawm methyl lossis hydroxyprodlopyl pawg. Cov qib hloov pauv cuam tshuam cuam tshuam cuam tshuam rau HPMC hauv dej, nws viscosity, thiab nws muaj peev xwm ua cov yeeb yaj kiab. Cov raug DS rau HPMC li ntawm 1.4 txog 2.2, nyob ntawm qib.
Viscosity:
HPMC cov qib tau faib raws lawv cov viscosity thaum yaj hauv dej. Qhov siab dua cov molecular hnyav thiab cov qib hloov chaw, ntau dua qhov viscosity. Piv txwv li, HPMC K100M (nrog ntau dua viscosity ntau) feem ntau siv nyob rau hauv kev tswj hwm cov tshuaj kawm qib siab, cov qib qis qis rau cov ntsiav tshuaj thiab cov ntawv thov cov khoom noj.
Dej Solubility:
HPMC yog soluble nyob rau hauv dej thiab ua cov quav tshuaj pleev li thaum uas yaj, tab sis kub thiab pH tuaj yeem cuam tshuam nws solubility. Piv txwv li, hauv dej txias, nws yaj sai sai, tab sis nws sububility tej zaum yuav txo nyob rau hauv dej kub, tshwj xeeb yog nyob rau hauv cov dej kub, feem ntau.
Zaj duab xis-tsim muaj peev xwm:
Ib qho ntawm cov tseem ceeb ntawm hydroxypropy kasthylulose yog nws muaj peev xwm los ua ib zaj duab xis hloov tau. Cov cuab yeej no ua rau nws haum rau kev siv hauv cov tshuaj pleev ntsiav tshuaj, qhov chaw uas nws muab tus du, tswj kev tso tawm saum npoo. Nws tseem muaj txiaj ntsig hauv kev lag luam khoom noj los txhim kho kev ntxhib los mos thiab txee lub neej.
Gelation:
Nyob rau tej yam thiab kub, HPMC tuaj yeem ua cov gels. Cov cuab yeej no tau txais txiaj ntsig zoo hauv cov tshuaj yeeb yaj kiab, qhov chaw uas nws tau siv los tsim cov tshuaj tswj kev tso tawm.
Cov ntawv thov ntawm hydroxypropy kas methylcellulose
Kws Kev Lag Luam:
HPMC yog siv los ua phau ntawv hauv ntsiav tshuaj tsim, tshwj xeeb hauv kev ncua thiab tswj-tso tawm. Nws tseem ua hauj lwm ua ib ce tus neeg sawv cev rau cov ntsiav tshuaj thiab cov tsiav tshuaj kom tswj tau cov kev tso tawm ntawm cov khoom siv nquag. Nws lub peev xwm los ua cov yeeb yaj kiab ruaj khov thiab cov kua pleev yog qhov zoo tagnrho rau cov tshuaj tiv thaiv tshuaj.
Kev Lag Luam Khoom Noj
Hauv kev lag luam khoom noj khoom haus, HPMC yog siv los ua cov tshuaj lom neeg tuab, thiab stabilizer nyob rau hauv ntau yam khoom, nrog rau cov kua ntses, hnav khaub ncaws, thiab cov khoom ci. Nws pab txhim kho kev ntxhib los mos thiab txuas ntxiv txee lub neej los ntawm kev txo cov dej noo ploj.
Tshuaj pleev ib ce thiab kev saib xyuas tus kheej:
HPMC tau siv dav hauv cov tshuaj pleev ib ce, qhov nws ua raws li cov tuab thiab muaj kuab thiab muaj kuab tshuaj, thiab lwm yam khoom siv saib xyuas. Nws lub peev xwm los tsim cov qauv gel yog cov txiaj ntsig tshwj xeeb hauv cov ntawv thov no.
Kev Lag Luam Kev Tsim Kho Kev Tsim Kho:
Hauv kev tsim kho kev tsim kho, tshwj xeeb hauv cov cement thiab plaster formatic, HPMC yog siv los ua cov dej-khaws cia. Nws pab txhim kho kev ua haujlwm thiab txhim kho cov khoom sib txuas lus ntawm cov ntaub ntawv.
Lwm Yam Kev Siv:
HPMC kuj tseem ua haujlwm hauv kev lag luam textile, ntawv txheej, thiab txawm tias muaj ntau lawm ntawm cov yeeb yaj kiab biodegradable.
HydroxyPropyyl Methylcellulose (HPMC)Yog ib qho kev sib txuas zoo siv thoob plaws ntau cov kev lag luam vim nws cov khoom lag luam xws li kev ua yeeb yam, thickening muaj peev xwm, thiab dej rov qab. Thaum nws tsis muaj "tus lej xov tooj" nyob rau hauv lub koob npe nrov zoo li nws tus lej (9004-65) thiab cov khoom lag luam HPMC K100M, HPMC E4M). Ntau yam muaj ntau yam ntawm HPMC cov qhab nia muaj cov kev siv tau nyob rau hauv ntau daim teb, los ntawm kws tshuaj rau cov zaub mov, tshuaj pleev ib ce, thiab kev tsim kho.
Lub sij hawm Post: Mar-21-2025