HPMC (Hydroxypropyl methylcellulose) yog ib qho tseem ceeb mortar admixture dav siv hauv cov khoom siv hauv tsev. Nws lub luag haujlwm tseem ceeb suav nrog kev txhim kho cov dej tuav ntawm mortar, txhim kho kev ua haujlwm thiab txhim kho kev tawg. Qhov zoo ntawm AnxinCel®HPMC yog ib qho tseem ceeb ntawm nws qhov kev ua tau zoo, uas cuam tshuam ncaj qha rau nws cov solubility thiab kev faib tawm hauv mortar thiab nws cov txiaj ntsig kev txhim kho ntawm cov khoom ntawm mortar.
1. Kev txhais ntawm HPMC fineness
HPMC fineness feem ntau yog hais nyob rau hauv cov nqe lus ntawm qhov nruab nrab particle loj ntawm nws hais los yog feem pua ntawm ib tug tshwj xeeb sieve. HPMC particles nrog high fineness yog me me thiab muaj ib tug loj dua qhov chaw; HPMC particles uas tsis tshua muaj fineness yog loj thiab muaj ib tug me me qhov chaw. Fineness muaj qhov cuam tshuam loj rau ntawm qhov sib cais, kev sib faib sib luag thiab kev sib cuam tshuam ntawm HPMC nrog cov cement hais.
2. cuam tshuam rau kev tuav dej
Kev tuav dej yog qhov taw qhia tseem ceeb ntawm kev ua haujlwm ntawm mortar, uas cuam tshuam ncaj qha rau kev tsim kho thiab kev ua haujlwm zoo tom qab hardening. Qhov siab dua qhov zoo ntawm HPMC, qhov sib npaug sib npaug ntawm cov khoom yog nyob rau hauv mortar, uas tuaj yeem tsim cov dej tuav pov hwm, yog li txhim kho cov dej tuav ntawm lub mortar. Tsis tas li ntawd, cov nplua-grained HPMC yaj sai dua thiab tuaj yeem khaws cov dej ua ntej, uas yog qhov tshwj xeeb tshaj yog muaj txiaj ntsig zoo nyob rau hauv high-temperature los yog dej-absorbent puag.
Txawm li cas los xij, kev nplua ntau dhau yuav ua rau HPMC agglomerate thaum nws los rau hauv kev sib cuag nrog dej sai, cuam tshuam rau nws qhov kev faib tawm hauv mortar, yog li txo qhov kev tuav dej tiag tiag. Yog li ntawd, qhov kev thov tiag tiag yuav tsum tau txiav txim siab zoo thaum xaiv HPMC fineness.
3. cuam tshuam rau kev ua haujlwm
Kev ua haujlwm yog hais txog kev tsim kho ntawm mortar, uas feem ntau cuam tshuam nrog cov kua dej thiab thixotropy ntawm mortar. HPMC cov khoom uas muaj qhov zoo dua tuaj yeem tsim cov txheej txheem colloid nyob rau hauv lub mortar tom qab dissolving, uas yuav pab txhim kho lub fluidity thiab lubrication ntawm lub mortar, yog li txhim kho kev ua hauj lwm. Tshwj xeeb tshaj yog hauv kev tsim kho tshuab, kev ua haujlwm siab HPMC tuaj yeem txo cov tshuaj tiv thaiv thiab txhim kho kev tsim kho.
Ntawm qhov tsis sib xws, vim qhov qeeb qeeb ntawm HPMC cov khoom nrog qis dua, cov tshuaj khib nyiab tuaj yeem muaj cov viscosity tsis txaus nyob rau theem pib ntawm kev sib xyaw, cuam tshuam rau kev tsim kho kev xav. Tsis tas li ntawd, HPMC nrog cov khoom loj tuaj yeem raug faib tsis sib npaug hauv cov tshuaj khib nyiab, cuam tshuam rau kev ua haujlwm tag nrho.
4. cuam tshuam rau kev tawg tsis kam
Kev sib tsoo tsis kam yog feem ntau cuam tshuam los ntawm kev ziab shrinkage thiab sab hauv kev faib tawm uniformity ntawm mortar. HPMC nrog kev ua haujlwm siab tuaj yeem muab faib ua ntau qhov sib npaug hauv cov mortar los tsim cov yeeb yaj kiab cellulose txuas ntxiv, uas ncua sijhawm cov dej evaporation thiab txo qhov ziab ntawm cov mortar, yog li txhim kho cov kab nrib pleb.
Ntawm qhov tod tes, HPMC nrog qis fineness yuav ua rau cov cheeb tsam hauv cheeb tsam hauv lub mortar vim tsis zoo dispersion, tsis muaj peev xwm tswj kom qhuav shrinkage zoo, thiab muaj tsis zoo tawg tsis kam.
5. cuam tshuam rau lub zog
Qhov zoo ntawm HPMC muaj qhov cuam tshuam ncaj qha rau lub zog ntawm mortar. HPMC nrog high fineness feem ntau pab cov cement kom hydrate ntau dua vim kev txhim kho cov dej tuav thiab dispersion, yog li txhim kho lub zog thaum ntxov ntawm mortar. AnxinCel®HPMC nrog qis fineness yog tsis muaj zog nyob rau hauv dissolution thiab tis, uas tej zaum yuav ua rau tsis txaus hydration nyob rau hauv lub zos cheeb tsam, yog li cuam tshuam lub uniformity ntawm mortar zog.
Nws yuav tsum raug sau tseg tias siab dhau ntawm HPMC cov ntsiab lus lossis kev ua kom zoo yuav ua rau muaj kev cuam tshuam tsis zoo rau lub zog, vim tias cellulose nws tus kheej muaj kev txwv tsis pub muaj kev cuam tshuam rau cov khoom siv ntawm cov tshuaj khib nyiab, thiab ntau dhau yuav dilute qhov piv ntawm aggregate thiab cement.
6. Kev xav txog nyiaj txiag thiab kev tsim kho
Hauv cov haujlwm tiag tiag, kev ua haujlwm siab HPMC feem ntau yog kim dua, tab sis nws cov txiaj ntsig kev ua tau zoo yog qhov pom tseeb, thiab nws tsim nyog rau lub sijhawm uas yuav tsum muaj siab ntawm kev tuav dej thiab tawg ua haujlwm. Rau cov kev xav tau kev tsim kho dav dav, qhov nruab nrab HPMC fineness feem ntau tuaj yeem ua tiav qhov sib npaug ntawm kev ua haujlwm thiab kev lag luam.
HPMC nrog sib txawv fineness muaj feem cuam tshuam rau cov khoom ntawm mortar. High-fineness HPMC feem ntau muaj kev ua tau zoo tshaj plaws ntawm cov dej tuav, kev ua haujlwm thiab kev ua haujlwm tawg, tab sis tus nqi siab dua thiab tuaj yeem ua rau muaj kev pheej hmoo ntawm kev sib sau ua ke thaum lub sijhawm tawg; low-finness HPMC yog tus nqi qis dua, tab sis muaj kev txwv hauv kev txhim kho kev ua haujlwm. . Kev xaiv tsim nyog ntawm AnxinCel®HPMC kev ua kom zoo raws li kev tsim kho tshwj xeeb yog lub tswv yim tseem ceeb los txhim kho kev ua haujlwm mortar thiab tswj cov nqi.
Post lub sij hawm: Jan-08-2025