Cov tshuaj HPMC yog dab tsi?

HydroxyPropyyl methylcellose (HPMC), ib qho kev tsim kho qib, yog siv dav hauv tsev, tshuaj, khoom noj khoom haus, tshuaj pleev zaub mov thiab lwm thaj teb.

1. Cov lus qhia yooj yim

1.1 txhais
HydroxyPropyyl methylcellose (HPMC) yog cov tsis-ionic cellulose ither ua los ntawm cov ntaub ntawv pom zoo los ntawm kev ua yeeb yam ntawm lub ntuj. HPMC tuaj yeem yaj nyob hauv dej los tsim cov pob tshab lossis cov kua huv, dej ua kom huv, ua yeeb yaj kiab, kev sib raug zoo thiab cov khoom sib txawv thiab emulsification.

1.2 Lub cev siv mis thiab tshuaj lom neeg
Zog: Dawb lossis tawm-dawb fibroous hmoov.
Solubility: soluble hauv dej txias thiab qee cov kuab tshuaj organic, insoluble hauv dej kub, ethanol, thiab lwm yam.
Stability: Cov tshuaj ruaj khov, kua qaub thiab alkali tsis kam.
Thickening: zoo nce viscosity ntawm kev daws.
Zaj duab xis-tsim: tuaj yeem tsim cov yeeb yaj kiab ntom ntom nyob rau saum npoo ntawm ntau yam ntaub ntawv.

2. Cov yam ntxwv tseem ceeb

2.1 thickening
HPMC qhia cov nyhuv zoo heev rau hauv kev daws teeb meem thiab tuaj yeem ua kom muaj zog ua kom lub viscosity ntawm cov kua. Cov xeeb ceem no ua rau HPMC dav siv hauv cov cuab yeej kos duab kos, cov nplaum, cov xim pleev xim rau thiab lwm thaj teb. Lub viscosity ntawm cov khoom tuaj yeem tswj hwm los ntawm kev kho tus nqi ntawm HPMC ntxiv kom tau raws li cov kev xav tau ntawm daim ntawv thov sib txawv.

2.2 Dej Ua Ke
HPMC muaj cov dej ua haujlwm zoo heev thiab tuaj yeem txo cov dej evaporation. Qhov no yog qhov tshwj xeeb tshaj nyob rau hauv cov ntaub ntawv tsim xws li cement cug thiab ua rau hmoov. Nws tuaj yeem txuas cov kev ua haujlwm ntawm cov khoom siv, txhim kho cov khoom siv ua kom zoo, thiab zam kom tsis txhob tawg thiab lub zog poob los ntawm kev ziab nrawm dhau.

2.3 Zaj duab xis-ua cov cuab yeej
HPMC tuaj yeem tsim cov pob tshab thiab cov zaj duab xis tawv nyob rau saum npoo ntawm ntau yam substrates tom qab tau yaj hauv dej. Zaj duab xis no muaj qhov zoo heev, elasticity thiab waterproof cov khoom. Nws yog dav siv nyob rau hauv cov cuab yeej txheej txheem kws kos duab, tshuaj pleev pob tshuaj, khoom noj khoom haus thiab lwm daim teb los muab kev tiv thaiv thiab txhim kho kev ua haujlwm ntawm cov khoom.

2.4 Adhaesion
Vim nws cov nplaum nplaum zoo, HPMC tau dav siv hauv cov khoom lag luam xws li cov khoom nplaum, thiab lwm yam.

2.5 lubricity
HPMC muaj cov khoom hluav taws xob zoo tshaj plaws, uas tuaj yeem txo kev sib txhuam thiab txhim kho kev sib txhuam thiab kev ua haujlwm thaum kev tsim kho. Qhov no yog lub luag haujlwm tseem ceeb hauv kev siv xws li cov nplais nplaum, putty hmoov, thiab tuaj yeem txhim kho kev ua haujlwm tau zoo thiab txo qis kev coj ua.

2.6 emulsification
HPMC tuaj yeem siv los ua emulsifier los pab ruaj khov lub emulsion system, tso cai tsis sib xws los ua cov khoom ruaj khov ua ke. Cov cuab yeej no tau siv dav hauv cov txheej txheem emulsion, tshuaj pleev ib ce, kev npaj khoom lag luam, thiab lwm yam. Txhawm rau kom muaj kev sib txuam thiab ruaj khov ntawm cov khoom.

3. Cov chaw thov

3.1 Cov Ntaub Ntawv Hauv Tsev
Hauv kev tsim kho, HPMC yog siv nyob rau hauv xis mas cug, ua rau hmoov txhuas, hmoov av nplaum thiab lwm yam ntaub ntawv. Nws cov dej ua tuab, lubrication thiab zaj duab xis tsim cov khoom siv tau txhim kho, txhim kho cov khoom tsim kho, txhim kho cov khoom tsim kho, thiab txhim kho cov khoom tsim kho tau zoo.

3.2 tshuaj
HPMC yog siv nyob rau hauv lub chaw muag tshuaj paus ua cov khoom siv txheej thiab tus neeg sawv cev tso tawm rau cov chaw npaj tshuaj. Nws cov khoom ua yeeb yaj kiab, adhesion thiab tsis muaj tshuaj lom ua nws cov khoom siv cov tshuaj zoo tshaj plaws, uas tuaj yeem txhim kho cov tshuaj thiab kev tswj hwm cov tshuaj tso tawm tshuaj thiab tswj cov tshuaj tso tawm tshuaj.

3.3 Zaub Mov
Hauv kev lag luam khoom noj, HPMC yog siv los ua cov tuab, stabilizer thiab emulsifier. Feem ntau nws siv hauv cov khoom xws li jelly, jam, mis, khoom khov, thiab lwm yam los txhim kho cov qauv thiab ruaj khov ntawm cov khoom thiab txuas lub txee lub neej.

3.4 Tshuaj pleev ib ce
Daim ntawv thov ntawm HPMC hauv Tshuaj pleev ib ce suav nrog cov khoom siv xws li tshuaj pleev ib yam, thiab siv cov khoom siv khov kho, thiab txhim kho kev ntxhib los mos thiab cov khoom ntawm cov khoom.

3.5 Lwm Tus
In addition, HPMC is also widely used in paints, paper, textiles, ceramics and other fields as a thickener, stabilizer and binder to improve product performance, stability and use effect.

4. Kev tsis muaj

4.1 Cov Lus Qhia Tshwj Xeeb
Cov lus qhia kev ua haujlwm ntawm HPMC feem ntau suav nrog viscosity, qib ntawm cov ntsiab lus ntawm cov lus qhia, thiab cov ntsiab lus tshauv tuaj yeem hloov kho raws li cov kev thov sib txawv.

4.2 Viscosity
Viscosity yog ib qho ntawm cov tsis tseem ceeb ntawm HPMC, uas cuam tshuam ncaj qha cuam tshuam nws cov nyhuv hauv kev thov. HPMC muaj ntau cov kev xaiv viscosity los ntawm qhov qis rau siab, uas tuaj yeem tswj hwm los ntawm kev kho qhov kub, lub sijhawm thiab cov tshuaj tiv thaiv cov txheej txheem thaum cov txheej txheem ntau lawm.

4.3 Qib ntawm hloov chaw
Cov degree ntawm kev hloov pauv yog hais txog degree hloov chaw ntawm methoxy thiab hydroxyprropoxy hauv HPMC. Cov ntsiab lus ntawm cov kev hloov no cuam tshuam rau cov solubility, adceesion thiab ruaj khov ntawm HPMC. HPMC nrog cov qib sib txawv ntawm kev hloov chaw yog haum rau cov ntawv thov sib txawv.

5. Qhov zoo thiab cov nyom

5.1 Zoo
Versatility: HPMC muaj ntau lub zog xws li thickening, dej khaws cia, ua yeeb yaj kiab, thiab muaj ntau cov kev siv.
Kev Nyab Xeeb: Tsis muaj tshuaj lom thiab tsis muaj kuab thiab tsis muaj mob, ua tau raws li cov qauv kev nyab xeeb, thiab tsim nyog rau cov chaw xws li cov tshuaj thiab cov khoom noj muaj cov dej num muaj kev nyab xeeb.
STABILITY: Cov tshuaj ruaj khov, tuaj yeem tswj hwm kev ua tau zoo nyob rau hauv cov kev sib txawv ib puag ncig, thiab muaj zog yoog tau.

5.2 Cov Kev Sib Tw
Tus nqi: piv nrog qee cov ntaub ntawv ib txwm muaj, tus nqi HPMC yog qhov tseem ceeb, uas yuav cuam tshuam nws qhov kev tshaj tawm hauv qee cov ntawv thov tsawg.
Kev sib tw: raws li kev lag luam xav tau rau cov khoom ua haujlwm nce, hloov chaw ua haujlwm thiab cov khoom sib tw kuj tau tawm mus rau HPMC cov kev sib tw rau HPMC cov khoom lag luam qhia tawm.

6. Yav Tom Ntej Kev Loj Hlob

Nrog thev naus laus zis thiab kev nthuav dav ntawm cov chaw thov, qhov kev thov rau HPMC yuav loj hlob ntxiv. Cov lus qhia txog yav tom ntej muaj xws li:
Txhim kho ntau dua: los ntawm kev txhim kho cov txheej txheem ntau lawm, txo cov nqi thiab txhim kho cov khoom sib tw tau muaj kev sib tw.
Nthuav cov ntawv thov tshiab: Tshawb cov ntawv thov ntawm HPMC hauv cov ntaub ntawv tshiab, xws li cov ntaub ntawv zoo ib puag ncig, kev npaj khoom tshiab, thiab lwm yam.
Txhim kho kev ua haujlwm: txuas ntxiv txhim kho kev ua haujlwm ntawm HPMC thiab tsim cov khoom lag luam ntau dua thiab txuag tau txiaj ntsig ntawm cov kev xav tau sib txawv.