Kuchita kwa hydroxypropyl methylcellulose HPMC mumatope

Hydroxypropyl methylcellulose ndi imodzi mwazowonjezera za cellulose ether mumatope owuma ndipo imakhala ndi ntchito zingapo mumatope. Ntchito zazikulu za hydroxypropyl methylcellulose mumatope a simenti ndikusunga madzi komanso kukhuthala. Kuphatikiza apo, chifukwa cha kuyanjana kwake ndi simenti, imathanso kutenga nawo gawo pakulowetsa mpweya, kuchedwetsa kukhazikika, komanso kukulitsa mphamvu zomangira zomangira. Chikoka.

Ntchito yofunika kwambiri ya hydroxypropyl methylcellulose mumatope ndikusunga madzi. Monga kusakaniza kwa cellulose ether mumatope, hydroxypropyl methylcellulose ingagwiritsidwe ntchito pafupifupi muzinthu zonse zamatope, makamaka chifukwa cha kusunga madzi. Nthawi zambiri, kusungidwa kwa madzi kwa hydroxypropyl methylcellulose kumakhudzana ndi kukhuthala kwake, kuchuluka kwa m'malo ndi kukula kwa tinthu.

Hydroxypropyl methylcellulose amagwiritsidwa ntchito ngati thickener, ndipo thickening zotsatira zimagwirizana ndi mlingo wa m'malo, tinthu kukula, mamasukidwe akayendedwe ndi mlingo wa kusinthidwa kwa hydroxypropyl methylcellulose. Nthawi zambiri, ndipamwamba mlingo wa m'malo ndi mamasukidwe akayendedwe a cellulose ether, ang'onoang'ono tinthu kukula ndi zoonekeratu thickening kwenikweni.

Mu hydroxypropyl methylcellulose, kuyambitsidwa kwa magulu a methoxy kumachepetsa mphamvu yamadzi amadzimadzi okhala ndi hydroxypropyl methylcellulose, kotero kuti hydroxypropyl methylcellulose imakhala ndi mphamvu yopatsa mpweya pamatope a simenti. Yambitsani kuchuluka koyenera kwa thovu mumtondo. Chifukwa cha "mphamvu ya mpira" ya thovu,

Ntchito yomanga matope imakula bwino, pamene kuyambika kwa thovu la mpweya kumawonjezera zokolola za matope. Inde, kuchuluka kwa mpweya wolowetsedwa kumafunika kuwongoleredwa. Pamene mpweya wochuluka ulowetsedwa, ukhoza kusokoneza mphamvu ya matope.

Hydroxypropyl methylcellulose idzachedwetsa kuyika kwa simenti, kuchedwetsa kukhazikitsa ndi kuuma kwa simenti, ndikuwonjezera nthawi yotsegulira matope moyenerera. Komabe, izi sizili bwino kwa matope m'madera ozizira.

Monga chinthu chotalikirapo cha polima, hydroxypropyl methylcellulose imatha kukonza magwiridwe antchito ndi zinthu zoyambira ndikusunga bwino chinyezi cha slurry ikawonjezeredwa ku simenti.

The katundu waukulu wa HPMC mu matope monga: kusungira madzi, thickening, kuwonjezera nthawi yoika, mpweya entrainment, kupititsa patsogolo kumangika chomangira mphamvu, etc.