Daim ntawv thov ntawm methyl cellulose hauv cov zaub mov

Cellulose yog qhov ntau tshaj plaws cov txiv ntoo polymer hauv xwm. Nws yog ib txoj kab polymer sib txuas txuas nrog los ntawm D-kua halcose los ntawm β- (1-4) glycosidic bonds. Cov qib ntawm polymerization ntawm cellulose tuaj yeem ncav cuag 18,000, thiab txoj kev molecular muaj peev xwm ncav cuag ntau lab.

Cellulose tuaj yeem tsim los ntawm cov ntoo purpp lossis paj rwb, uas muaj zog nrog cov roj methylropen (MCRMC), uas yog, methoxy thiab hydroxyprropoxy tau siv los hloov lub Hydroxyl pawg rau ntawm C2, C3 thiab C6 txoj haujlwm ntawm cov piam thaj mus ua cov neeg tsis muaj kev ua tsis tau zoo.

Cov lag luam methylcellu / hydroxyprropyloostrose yog tus ntxhiab tsw qab, dawb mus creamy dawb hmoov zoo nyob rau hauv cov hmoov av, thiab pheeb suab yog nruab nrab ntawm 5-8.

Cov ntsiab lus methoxyl ntawm methylcellulose siv los ua cov zaub mov ntxiv feem ntau ntawm 25% thiab 33%, cov qib kev hloov pauv ntawm 0-3.

Raws li cov zaub mov ntxiv, tshuaj methoxyl cov ntsiab lus ntawm hydroxypropylulose feem ntau ntawm 19% thiab 30%, thiab 30% thiab 12%.

Cov yam ntxwv ua
Thermoreversible gel
Methylcellulose / hydroxypropyloosyloosylcethylcellose muaj thermoreversible gelling cov khoom.

Methyl cellulose / hydroxypropyl cellulose yuav tsum yaj nyob rau hauv dej txias lossis dej ib txwm muaj. Thaum cov tshuaj aqueous yog rhuab, lub viscosity yuav txuas ntxiv mus, thiab gelation yuav tshwm sim thaum nws mus txog ib qho kub. Nyob rau lub sijhawm no, methyl cellulose / hydroxypropyl cellulose cov tshuaj methylcellulose pib kom tig mus rau opaque milky dawb, thiab pom viscosity tau nce nrawm.

Qhov kub no hu ua lub thermal gel pib kub. Raws li cov gel txias, lub meej viscosity dlops sai. Thaum kawg, lub viscosity nkhaus thaum txias yog raws li thawj cov cua kub viscosity nkhaus, thiab cov txheej txheem ntawm tig rov qab rau hauv kev daws tom qab txias yog thim rov qab yog rov qab.

HydroxyPropyyl methylulose muaj cov thermal thermal gelation qhib kev kub tshaj methylcellulose thiab lub zog qis dua.

ua yeeb yam
1. Zaj duab xis-tsim cov khoom
Zaj duab xis tsim los ntawm methylcellulose / hydroxyprropencellulose los yog cov yeeb yaj kiab uas muaj ob leeg tuaj yeem tiv thaiv cov roj tsiv teb tsaws thiab dej poob, yog li ua kom muaj kev ruaj khov ntawm cov qauv khoom noj.

2. Emulsifying Khoom
Methylcellulose / hydroxyprropyloosylropencellulose nro thiab txo qis kev txhawb nqa rau kev ruaj khov zoo dua.

3. Kev tswj dej poob
Methylcellulose / hydroxypropyloostrose tuaj yeem tswj cov dej noo noo, thiab tuaj yeem txo qhov kev puas tsuaj, dej khov hloov ntawm cov zaub mov los ntawm tub yees.

4. Adhesive Performance
Methylcellulose / hydroxypropylropencellulose tau siv rau cov nyiaj tau los tsim kho kom zoo rau kev coj ua kom zoo thaum muaj kev ya raws thiab qab tso tawm kev tswj hwm.

5. Kev ncua hydration kev kawm
Kev siv methylcellulose / hydroxypropylropencosylulose tuaj yeem txo cov zaub mov viscosity ntawm zaub mov thaum ua hluav taws xob, yog li kev txhim kho kom tau zoo dua. Txo cov boiler thiab cov khoom siv fouling, ceev kom cov txheej txheem kev sib tw puag ncig, txhim kho kev ua haujlwm ua haujlwm, txhim kho kev tso nyiaj.

6. Thickening kev ua tau zoo
Methylcellulose / hydroxypropylropencellulose tuaj yeem siv ua ke nrog cov nyas ua ke, uas tuaj yeem nce qib viscosity txawm nyob rau theem qis heev.

7. Qhov kev daws teeb meem yog ruaj khov nyob rau hauv acidic thiab dej cawv
Methylcellulose / hydroxyprropylroplosylulose colutions yog ruaj khov rau pH 3 thiab muaj kev ruaj khov nyob hauv cov kev daws teeb meem muaj cawv.

Daim ntawv thov ntawm methyl cellulose hauv cov zaub mov

Methyl cellulose yog ib hom ntawm cov neeg tsis-ionic cellulose tsim los ntawm kev siv cov khoom siv hydlulous nyob rau hauv ib pawg ntawm cellulos nrog cov pab pawg methoxy. Nws muaj dej khaws cia, thickening, emulsification, zaj duab xis, kev hloov pauv ntawm cov ntau thiab cov haujlwm saum npoo av thiab lwm yam haujlwm.

Nws cov tshwj xeeb tshaj plaws yog qhov kev txhawb nqa gelation tau thim rov qab, yog, nws cov kua aqueous gel thaum ua kom sov, thiab tig rov qab rau kev daws teeb meem thaum txias. Nws yog dav siv nyob rau hauv cov zaub mov ci, kib zaub mov, khoom qab zib, kua zaub, kua zaub, dej haus, thiab cov khoom noj. Thiab khaub noom.

Lub zog loj hauv methyl me me muaj lub zog gel ntau dua peb zaug uas muaj lub zog me me, thiab muaj cov dej khov kho thiab cov khoom siv ceev ceev.

Nws tso cai rau cov zaub mov kom haum kom rov ua kom lawv cov khoom siv khov kho thiab cov kua mis pom ob lub sijhawm thaum lub sij hawm thiab ntev dua tom qab rov ua dua. Cov ntawv thov raug yog cov zaub mov khov-khov, cov nqaij tsis noj nqaij, cov nqaij ntses thiab nqaij ntses thiab nqaij ntses tsawg.