I-MHEC LH 620M

I-EipponCell MHEC LH 620M i-methyl hydroxyethyl cellulose isetshenziswa ku-gypsum slurry ukunikeza umphumela wokujiya obonakalayo.Emazingeni okushisa asekamelweni, njengoba i-viscosity kanye nomthamo we-cellulose ether yanda, umphumela wayo wokuqina ubonakala kakhulu.Kodwa-ke, njengoba izinga lokushisa likhuphuka, i-viscosity ye-cellulose ether iyancipha, okuholela ekubeni buthakathaka komphumela wayo wokujiya.Lokhu kuholela ekwehleni kwengcindezi ye-shear yesivuno, i-viscosity yepulasitiki, kanye ne-pseudoplasticity yengxube ye-gypsum, ekugcineni okuholela ekusebenzeni kabi.

I-Cellulose ether ithuthukisa ukugcinwa kwamanzi e-gypsum.Kodwa-ke, njengoba izinga lokushisa likhuphuka, ukugcinwa kwamanzi e-gypsum eshintshiwe kuncipha kakhulu futhi kulahlekelwa ngokuphelele umphumela wokuthuthukiswa kokugcinwa kwamanzi ku-60 °C.Izinga lokugcinwa kwamanzi le-gypsum slurry lithuthukiswa kakhulu nge-cellulose ether, futhi izinga lokugcinwa kwamanzi kancane kancane lifinyelela endaweni yokugcwala ngokwenyuka kokuqukethwe kwe-HPMC modified gypsum slurry enama-viscosity ahlukene.Ngokuvamile, ukugcinwa kwamanzi kwe-gypsum kuhambisana ne-viscosity ye-cellulose ether, kodwa kunomphumela omncane ku-viscosity ephezulu.

Izinguquko ekugcinweni kwamanzi kwama-cellulose ether anezinga lokushisa zihlobene eduze ne-microscopic morphology yama-cellulose ethers esigabeni soketshezi.Ekugxilweni okuthile, i-cellulose ether ijwayele ukuhlanganisa futhi yakhe izinhlangano ezinkulu ze-colloidal, ivimbele ngokuphumelelayo iziteshi zokulethwa kwamanzi zengxube ye-gypsum ukuze kuzuzwe ukugcinwa kwamanzi okusebenzayo.Kodwa-ke, njengoba izinga lokushisa likhuphuka, izakhiwo ze-gelation ezishisayo ze-cellulose ether zibangela ukuthi izinhlangano ezinkulu ze-colloidal ezakhiwe ngaphambilini ziphinde zihlakazeke, okuholela ekwehleni kokugcinwa kwamanzi.