Hydroxypropyl methylcellulose (HPMC)yog ib qho cellulose derivative uas yaj tau hauv dej, siv dav hauv kev tsim kho, tshuaj, khoom noj thiab kev lag luam tshuaj txhua hnub. Hauv cov ntaub ntawv tsim kho, tshwj xeeb tshaj yog cov nplaum pobzeb, cov phab ntsa putties, cov mortars qhuav, thiab lwm yam., HPMC, ua ib qho tseem ceeb additive, tsis yog tsuas yog txhim kho kev ua tau zoo ntawm kev tsim kho, tab sis kuj muaj qhov cuam tshuam tseem ceeb rau qhov cuam tshuam ntawm kev sib txuas.
1. Cov khoom tseem ceeb ntawm HPMC
AnxinCel®HPMC yog ib qho cellulose derivative uas muaj cov dej zoo solubility, adhesion thiab thickening effects. Nws tsim ib qho colloid hauv dej los ntawm hydroxypropyl thiab methyl pawg hauv nws cov qauv molecular, uas tuaj yeem txhim kho qhov adhesion, rheology thiab dej khaws cia ntawm cov khoom. Hauv cov nplaum tsev, ntxiv HPMC tuaj yeem txhim kho lub zog sib txuas, ntev lub sijhawm qhib, thiab txhim kho kev nthuav dav thiab kev tiv thaiv dej. Yog li ntawd, qhov ntau ntawm HPMC muaj feem cuam tshuam ncaj qha rau kev ua tau zoo ntawm cov khoom no, uas cuam tshuam rau qhov cuam tshuam ntawm kev sib txuas.
2. Cov nyhuv ntawm HPMC koob tshuaj rau ntawm lub zog sib txuas
Lub zog sib txuas yog qhov qhia tseem ceeb rau kev ntsuam xyuas cov nyhuv ntawm cov nplaum hauv tsev. Qhov ntau ntawm HPMC ntxiv rau cov nplaum tuaj yeem cuam tshuam rau lub zog sib txuas. Ntawm ib sab tes, qhov ntau ntawm HPMC tuaj yeem txhim kho kev sib txuas thiab lub zog ntawm cov khoom siv cement. Qhov no yog vim HPMC txhim kho kev khaws dej ntawm cov mortar, tso cai rau cement kom zoo dua cov tshuaj lom neeg nrog cov substrate nto thaum lub sijhawm hardening, yog li txhim kho qhov kawg sib txuas. Ntawm qhov tod tes, thaum qhov ntau ntawm HPMC me dhau, nws cov dej khaws cia tsis txaus, uas yuav ua rau cov cement poob dej ua ntej lub sijhawm, cuam tshuam rau cov txheej txheem hardening thiab ua rau lub zog sib txuas tsis ruaj khov; thaum qhov ntau dhau, nws yuav ua rau cov nplaum nplaum nplaum dhau, cuam tshuam rau kev ua haujlwm ntawm kev tsim kho thiab txawm tias ua rau lub zog txo qis.
Cov kev tshawb fawb tau qhia tias qhov ntau 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 no thaum ua kom muaj lwm yam khoom xws li kev ntws thiab kev ua haujlwm tau zoo. Txawm li cas los xij, qhov ntau tshwj xeeb yuav tsum tau hloov kho raws li hom substrate thiab qhov chaw thov tshwj xeeb.
3. Cov nyhuv ntawm HPMC koob tshuaj rau kev ua haujlwm ntawm kev tsim kho
Kev ua tau zoo ntawm kev tsim kho yog ib qho ntawm cov cim qhia tseem ceeb rau kev ntsuam xyuas cov nplaum, feem ntau suav nrog kev ua haujlwm tau zoo, yooj yim ntawm kev tsim kho thiab lub sijhawm ua haujlwm hloov kho tau. Qhov ntau ntawm HPMC muaj qhov cuam tshuam loj rau cov khoom no. Thaum qhov ntau ntawm HPMC nce ntxiv, qhov viscosity ntawm cov nplaum kuj nce ntxiv, qhia txog kev nplaum zoo dua thiab lub sijhawm qhib ntev dua. Txawm hais tias lub sijhawm qhib ntev qee zaum tuaj yeem txhim kho qhov yooj ywm ntawm kev tsim kho, nws kuj tseem yuav ua rau qhov chaw tsim kho lo rau thiab cuam tshuam rau qhov cuam tshuam ntawm kev sib txuas.
Rau ntau hom substrates, xws li vuas, pob zeb, phab ntsa, thiab lwm yam, qhov ntau ntawm AnxinCel®HPMC yuav tsum tau ua kom zoo. Piv txwv li, thaum xav tau lub sijhawm ntev ntawm kev ua haujlwm thiab kev kho kom haum, kev nce qhov ntau ntawm HPMC kom raug tuaj yeem ncua lub sijhawm qhib thiab zam kev qhuav sai dhau, ua rau kev sib txuas tsis zoo. Txawm li cas los xij, yog tias lub sijhawm qhib ntev dhau, nws yuav ua rau tsis tsim nyog thaum lub sijhawm tsim kho thiab cuam tshuam rau qhov tseeb ntawm kev tsim kho.
4. Cov nyhuv ntawm HPMC koob tshuaj rau kev tiv thaiv dej thiab kev tiv thaiv huab cua
HPMC tsis yog tsuas yog txhim kho lub zog sib txuas thiab kev ua haujlwm ntawm kev tsim kho xwb, tab sis kuj txhim kho qhov tsis kam dej thiab tiv taus huab cua ntawm cov nplaum. HPMC txhim kho qhov khaws cia dej ntawm cov cement, yog li cov nplaum cement yuav tsis poob dej sai dhau thaum lub sijhawm ua kom tawv, yog li ua kom nws tiv taus dej thiab tiv taus huab cua zoo dua. Thaum cov tshuaj HPMC raug, qhov tsis kam dej thiab lub neej ua haujlwm ntawm cov khoom tuaj yeem txhim kho tau zoo heev, tshwj xeeb tshaj yog nyob rau hauv phab ntsa sab nraud thiab cov chaw noo noo, qhov twg qhov tsis kam dej ntawm cov nplaum yog qhov tseem ceeb.
Txawm li cas los xij, HPMC ntau dhau yuav ua rau cov nplaum tuab dhau, cuam tshuam rau kev ruaj khov 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 qhov dej thiab dej tsis kam ntawm cement yog qhov tseem ceeb rau kev ua kom muaj kev sib txuas.
5. Cov nyhuv ntawm HPMC koob tshuaj rau lwm yam khoom siv lub cev
Ntxiv rau qhov muaj zog sib txuas, kev ua haujlwm ntawm kev tsim kho, kev tiv thaiv dej, thiab lwm yam, qhov ntau npaum li cas ntawm HPMC kuj tseem yuav cuam tshuam rau lwm yam khoom siv ntawm cov nplaum. Piv txwv li, nrog rau kev nce ntxiv ntawm HPMC koob tshuaj, qhov ruaj khov ntawm cov nplaum yuav raug txhim kho vim tias HPMC tuaj yeem tiv thaiv kev sib xyaw thiab kev faib ua pawg hauv cov nplaum thiab tswj cov khoom siv lub cev sib xws. Tsis tas li ntawd, qhov ntau npaum li cas ntawmHPMCkuj muaj feem cuam tshuam nrog cov yam xws li xim, cov khoom tiv thaiv kev plam, thiab lub sijhawm kho ntawm cov nplaum. Cov koob tshuaj HPMC sib txawv tuaj yeem ua tiav qhov kev ua tau zoo tshaj plaws hauv qab cov kev cai tsim kho sib txawv.
Ua ib qho tshuaj ntxiv tseem ceeb rau cov nplaum hauv tsev, AnxinCel®HPMC muaj feem cuam tshuam loj heev rau qhov cuam tshuam ntawm kev sib txuas. Nws cov koob tshuaj yuav tsum tau ua kom zoo raws li qhov yuav tsum tau ua ntawm kev tsim kho, cov yam ntxwv ntawm cov khoom siv thiab cov xwm txheej ib puag ncig. Kev siv HPMC kom raug tuaj yeem txhim kho lub zog sib txuas, kev ua haujlwm ntawm kev tsim kho, kev tiv thaiv dej thiab kev tiv thaiv huab cua, thaum tswj hwm qhov ruaj khov ntawm lub cev. Txawm li cas los xij, kev siv HPMC ntau dhau lossis tsis txaus yuav ua rau cov khoom nplaum tsis ruaj khov thiab cuam tshuam rau qhov cuam tshuam ntawm kev sib txuas. Yog li ntawd, hauv kev siv tiag tiag, nws yog qhov tsim nyog los txiav txim siab qhov koob tshuaj HPMC zoo tshaj plaws los ntawm kev sim thiab kev hloov kho kom ua tiav qhov cuam tshuam zoo tshaj plaws.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-26-2024