Lub luag haujlwm tseem ceeb ntawm HPMC hauv cov mortar ntub-mixed

Lub luag haujlwm tseem ceeb ntawm HPMC hauv cov mortar ntub-mixed feem ntau muaj peb yam hauv qab no:

1. HPMC muaj peev xwm khaws dej zoo heev.

2. Qhov cuam tshuam ntawm HPMC rau qhov sib xws thiab thixotropy ntawm cov mortar ntub sib xyaw.

3. Kev sib cuam tshuam ntawm HPMC thiab cement.

Kev khaws dej yog ib qho kev ua tau zoo tseem ceeb ntawm HPMC, thiab nws kuj yog ib qho kev ua tau zoo uas ntau lub tuam txhab tsim cov tshuaj sib xyaw ntub dej tau them sai sai rau.

Qhov cuam tshuam ntawm kev khaws dej ntawm HPMC nyob ntawm qhov nqus dej ntawm cov txheej hauv paus, cov khoom sib xyaw ntawm cov tshuaj khib, cov txheej tuab ntawm cov tshuaj khib, qhov xav tau dej ntawm cov tshuaj khib, thiab lub sijhawm teeb tsa ntawm cov khoom teeb tsa.

HPMC - kev khaws cia dej

Qhov kub ntawm HPMC gel siab dua, qhov zoo dua ntawm kev khaws dej.

Cov yam tseem ceeb uas cuam tshuam rau kev khaws dej ntawm cov tshuaj khib ntub yog HPMC viscosity, qhov ntxiv ntawm cov khoom me me, qhov zoo ntawm cov khoom me me thiab qhov kub siv.

Viscosity yog ib qho tseem ceeb rau HPMC kev ua tau zoo. Rau tib yam khoom, cov txiaj ntsig viscosity ntsuas los ntawm ntau txoj kev sib txawv sib txawv heev, thiab qee qhov txawm tias ob npaug ntawm qhov sib txawv. Yog li ntawd, thaum piv viscosities, nws yuav tsum tau ua ntawm tib txoj kev sim, suav nrog kub, spindle, thiab lwm yam. Feem ntau hais lus, qhov siab dua viscosity, qhov zoo dua qhov dej khaws cia nyhuv.

Txawm li cas los xij, qhov siab dua qhov viscosity thiab qhov loj dua qhov hnyav molecular ntawm HPMC, qhov txo qis hauv nws cov solubility yuav muaj qhov cuam tshuam tsis zoo rau lub zog thiab kev ua haujlwm ntawm cov mortar. Qhov siab dua qhov viscosity, qhov pom tseeb ntau dua qhov thickening effect ntawm cov mortar, tab sis tsis proportional. Qhov siab dua qhov viscosity, qhov ntau dua viscosity ntawm cov ntub mortar yog, uas qhia txog kev nplaum rau lub scraper thaum lub sijhawm tsim kho thiab kev nplaum siab rau lub substrate. Txawm li cas los xij, HPMC muaj me ntsis cuam tshuam rau kev txhim kho lub zog ntawm cov ntub mortar nws tus kheej, qhia tias qhov kev ua tau zoo tiv thaiv kev sagging tsis pom tseeb. Ntawm qhov tsis sib xws, qee qhov hloov kho HPMC nrog nruab nrab thiab qis viscosity zoo heev hauv kev txhim kho lub zog ntawm cov ntub mortar.

Qhov zoo ntawm HPMC kuj muaj qee yam cuam tshuam rau nws cov dej khaws cia. Feem ntau hais lus, rau HPMC nrog tib lub viscosity tab sis sib txawv fineness, qhov zoo dua HPMC, qhov zoo dua qhov dej khaws cia nyhuv nyob rau hauv tib qho ntxiv.