Hydroxypropyl methylcellulose (HPMC)yog ib qho kev siv dej-soluble cellulose derivative, dav siv hauv kev tsim kho, tshuaj, zaub mov thiab kev lag luam tshuaj txhua hnub. Hauv cov khoom siv hauv tsev, tshwj xeeb tshaj yog nyob rau hauv cov nplais nplaum, phab ntsa putties, mortars qhuav, thiab lwm yam, HPMC, yog ib qho tseem ceeb additive, tsis tsuas yog txhim kho kev tsim kho, tab sis kuj tseem muaj kev cuam tshuam tseem ceeb ntawm kev sib txuas lus.
1. Cov khoom tseem ceeb ntawm HPMC
AnxinCel®HPMC yog cellulose derivative nrog dej solubility zoo, adhesion thiab thickening teebmeem. Nws tsim cov colloid hauv dej los ntawm hydroxypropyl thiab methyl pawg hauv nws cov qauv molecular, uas tuaj yeem txhim kho qhov adhesion, rheology thiab dej tuav ntawm cov khoom. Hauv kev tsim cov nplaum, qhov sib ntxiv ntawm HPMC tuaj yeem txhim kho lub zog sib txuas, ua kom lub sijhawm qhib, thiab txhim kho kev sib kis thiab dej tsis kam. Yog li ntawd, tus nqi ntawm HPMC yog ncaj qha ntsig txog kev ua haujlwm ntawm cov khoom no, uas ua rau muaj kev cuam tshuam rau kev sib txuas lus.
2. Qhov cuam tshuam ntawm HPMC ntau npaum li cas ntawm kev sib khi lub zog
Bonding zog yog ib qho tseem ceeb qhia rau kev ntsuam xyuas cov nyhuv ntawm lub tsev adhesives. Tus nqi ntawm HPMC ntxiv rau cov nplaum tuaj yeem cuam tshuam rau lub zog sib txuas. Ntawm ib sab, qhov tsim nyog ntawm HPMC tuaj yeem txhim kho kev sib raug zoo thiab lub zog ntawm cov khoom siv cement. Qhov no yog vim HPMC txhim kho cov dej khaws cia ntawm cov tshuaj khib nyiab, tso cai rau cov cement kom zoo dua cov tshuaj lom neeg nrog rau lub substrate nto thaum lub sij hawm hardening txheej txheem, yog li txhim kho qhov kawg kev sib txuas nyhuv. Ntawm qhov tod tes, thaum tus nqi ntawm HPMC tsawg dhau, nws cov dej tuav tsis txaus, uas tuaj yeem ua rau cov cement poob dej ntxov ntxov, cuam tshuam rau cov txheej txheem hardening thiab ua rau lub zog tsis ruaj khov; thaum thaum cov nyiaj ntau dhau, nws yuav ua rau cov nplaum nplaum dhau, cuam tshuam rau kev tsim kho kev ua haujlwm thiab txawm tias ua rau lub zog poob qis.
Cov kev tshawb fawb tau pom tias qhov tsim nyog tshaj plaws ntawm HPMC feem ntau yog nyob nruab nrab ntawm 0.5% thiab 2%, uas tuaj yeem txhim kho lub zog sib txuas hauv qhov ntau thiab ua kom ntseeg tau lwm yam khoom xws li fluidity thiab workability. Txawm li cas los xij, tus nqi tshwj xeeb yuav tsum tau hloov kho raws li hom substrate thiab qhov chaw thov tshwj xeeb.
3. Cov nyhuv ntawm HPMC ntau npaum li cas ntawm kev tsim kho kev ua haujlwm
Kev tsim kho kev ua tau zoo yog ib qho tseem ceeb rau kev ntsuas cov nplaum, feem ntau suav nrog fluidity, yooj yim ntawm kev tsim kho thiab kho lub sijhawm ua haujlwm. Tus nqi ntawm HPMC muaj qhov cuam tshuam loj rau cov khoom no. Raws li tus nqi ntawm HPMC nce, qhov viscosity ntawm cov nplaum kuj nce, uas qhia tau tias muaj zog adhesion thiab lub sijhawm qhib ntev dua. Txawm hais tias lub sijhawm qhib ntev tuaj yeem txhim kho qhov hloov tau yooj yim ntawm kev tsim kho, nws kuj tseem tuaj yeem ua rau qhov chaw tsim kho kom rov qab thiab cuam tshuam rau kev sib raug zoo.
Rau ntau hom substrates, xws li cov vuas, pob zeb, phab ntsa, thiab lwm yam, tus nqi ntawm AnxinCel®HPMC yuav tsum tau kho kom zoo. Piv txwv li, nyob rau hauv cov xwm txheej uas yuav tsum tau ua haujlwm ntev thiab hloov kho, ua kom cov HPMC kom tsim nyog tuaj yeem ncua lub sijhawm qhib thiab tsis txhob ziab sai heev, ua rau muaj kev sib txuas tsis muaj zog. Txawm li cas los xij, yog tias lub sijhawm qhib ntev dhau lawm, nws yuav ua rau tsis tsim nyog slippage thaum lub sij hawm tsim kho thiab cuam tshuam rau kev tsim kho qhov tseeb.
4. Cov nyhuv ntawm HPMC ntau npaum li cas ntawm cov dej tsis kam thiab huab cua tsis kam
HPMC tuaj yeem tsis tsuas yog txhim kho kev sib raug zoo thiab kev tsim kho kev ua haujlwm, tab sis kuj tseem txhim kho cov dej tsis kam thiab huab cua tsis kam ntawm cov nplaum. HPMC txhim kho cov dej tuav ntawm cov cement, yog li cov cement-raws li nplaum nplaum yuav tsis poob dej sai heev thaum lub sij hawm hardening txheej txheem, yog li txhim kho nws cov dej tsis kam thiab huab cua tsis kam. Thaum cov koob tshuaj ntawm HPMC tsim nyog, cov dej tsis kam thiab kev pabcuam lub neej ntawm cov khoom tuaj yeem txhim kho tau zoo, tshwj xeeb tshaj yog nyob rau sab nrauv phab ntsa thiab qhov chaw ntub dej, qhov twg cov dej tsis kam ntawm cov nplaum yog qhov tseem ceeb.
Txawm li cas los xij, ntau dhau ntawm HPMC tuaj yeem ua rau cov nplaum nplaum ntau dhau, cuam tshuam rau kev ruaj ntseg ntawm cov khoom siv cement, thiab txo nws cov dej tsis kam. Yog li ntawd, kev ua kom zoo dua ntawm HPMC kom sib npaug ntawm cov dej thiab dej tsis kam ntawm cov cement yog tus yuam sij kom ntseeg tau cov txiaj ntsig kev sib raug zoo.
5. Qhov cuam tshuam ntawm HPMC ntau npaum li cas rau lwm yam khoom ntawm lub cev
Ntxiv nrog rau kev sib khi lub zog, kev tsim kho kev ua haujlwm, dej tsis kam, thiab lwm yam, qhov ntau npaum ntawm HPMC kuj tseem cuam tshuam rau lwm yam khoom ntawm lub cev ntawm cov nplaum. Piv txwv li, nrog kev nce ntawm HPMC ntau npaum li cas, qhov ruaj khov ntawm cov nplaum yuav raug txhim kho vim tias HPMC tuaj yeem cuam tshuam cov sedimentation thiab stratification hauv cov nplaum thiab tuav cov khoom sib xws. Tsis tas li ntawd, qhov ntau npaum ntawmHPMCkuj tseem muaj feem cuam tshuam nrog cov yam ntxwv xws li xim, cov khoom siv los tiv thaiv, thiab lub sijhawm kho ntawm cov nplaum. Cov tshuaj HPMC sib txawv tuaj yeem ua tiav lub cev zoo tshaj plaws raws li kev tsim kho sib txawv.
Raws li ib qho tseem ceeb additives rau lub tsev adhesives, AnxinCel®HPMC muaj kev cuam tshuam tseem ceeb rau kev sib txuas lus. Nws qhov ntau npaum li cas yuav tsum tau ua kom zoo raws li kev tsim kho tshwj xeeb, cov yam ntxwv substrate thiab ib puag ncig. Tus nqi tsim nyog ntawm HPMC tuaj yeem txhim kho kev sib raug zoo, kev tsim kho kev ua haujlwm, dej tsis kam thiab huab cua tsis kam, thaum tuav lub cev zoo. Txawm li cas los xij, ntau dhau lossis tsis txaus HPMC tuaj yeem ua rau cov khoom tsis ruaj khov thiab cuam tshuam rau kev sib raug zoo. Yog li ntawd, nyob rau hauv cov ntaub ntawv siv tau, nws yog ib qho tsim nyog los txiav txim siab qhov pom ntawm HPMC ntau npaum li cas los ntawm kev sim thiab kev hloov kho kom ua tiav cov txiaj ntsig zoo sib xws.
Post lub sij hawm: Dec-26-2024