MHEC LH 620 M

EipponCell MHEC LH 620M methyl hydroxyethyl cellulose yog siv nyob rau hauv gypsum slurry los muab cov nyhuv thickening.Nyob rau hauv chav tsev kub, raws li qhov viscosity thiab ntau npaum ntawm cellulose ether nce, nws cov nyhuv thickening yuav ntau pronounced.Txawm li cas los xij, raws li qhov kub nce siab, viscosity ntawm cellulose ether txo qis, ua rau tsis muaj zog ntawm nws cov nyhuv thickening.Qhov no ua rau txo qis ntawm cov qoob loo shear kev nyuaj siab, yas viscosity, thiab pseudoplasticity ntawm gypsum sib tov, thaum kawg ua rau kev ua haujlwm tsis zoo.

Cellulose ether txhim kho cov dej tuav ntawm gypsum.Txawm li cas los xij, raws li qhov kub thiab txias, cov dej khaws cia ntawm kev hloov kho gypsum txo qis thiab txawm tias tag nrho nws cov dej tuav txhim kho cov nyhuv ntawm 60 ° C.Cov dej tuav tus nqi ntawm gypsum slurry yog qhov zoo dua los ntawm cellulose ether, thiab cov dej tuav tau maj mam nce mus txog qhov saturation nrog qhov nce hauv cov ntsiab lus rau HPMC hloov gypsum slurry nrog cov viscosities sib txawv.Feem ntau, cov dej tuav ntawm gypsum yog proportional rau viscosity ntawm cellulose ether, tab sis nws muaj me ntsis cuam tshuam ntawm viscosity siab.

Cov kev hloov hauv dej tuav ntawm cellulose ethers nrog qhov kub thiab txias yog ze ze rau lub microscopic morphology ntawm cellulose ethers hauv cov kua theem.Ntawm ib qho concentration, cellulose ether nyiam sib sau ua ke thiab tsim cov koom haum colloidal loj, thaiv cov dej xa dej ntawm cov gypsum sib tov kom ua tiav cov dej tuav tau zoo.Txawm li cas los xij, raws li qhov kub thiab txias, cov khoom thermal gelation ntawm cellulose ether ua rau yav tas los tsim cov colloidal cov koom haum loj kom rov tawg, ua rau txo qis hauv dej tuav.