Katundu wa Hydroxypropyl Methyl Cellulose Ether mu Mortar

Monga imodzi mwazinthu zofunika kwambiri za cellulose ether admixtures mumatope owuma a ufa, hydroxypropyl methylcellulose ili ndi ntchito zambiri mumatope. Udindo wofunikira kwambiri wa hydroxypropyl methylcellulose mumatope a simenti ndikusunga madzi ndikukhuthala. Kuphatikiza apo, chifukwa cholumikizana ndi makina a simenti, imatha kukhalanso ndi gawo lothandizira pakulowetsa mpweya, kuchedwetsa kukhazikika, komanso kukulitsa mphamvu zomangira zomangira. zotsatira.

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, kuchuluka kwa kulowetsedwa m'malo ndi kukhuthala kwa cellulose ether, ndi tinthu tating'onoting'ono, m'pamenenso kukhuthala kumawonekera.

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 thovu loyenera la mpweya mumatope, chifukwa cha "mpira" wa thovu la mpweya,

Ntchito yomanga matope imakhala bwino, ndipo nthawi yomweyo, kuyambitsidwa kwa thovu la mpweya kumawonjezera kuchuluka kwa matope. Zoonadi, kuchuluka kwa kulowetsedwa kwa mpweya kumafunika kuwongoleredwa. Kuchuluka kwa mpweya kudzakhala ndi zotsatira zoipa pa mphamvu ya matope.

Hydroxypropyl methylcellulose idzachedwetsa kuyika kwa simenti, potero kumachepetsa kuyika ndi kuuma kwa simenti, ndikutalikitsa nthawi yotsegulira matope moyenerera, koma izi sizili zabwino kwa matope m'madera ozizira.

Monga chinthu chotalikirapo cha polima, hydroxypropyl methylcellulose imatha kusintha magwiridwe antchito ndi gawo lapansi pambuyo powonjezeredwa ku simenti yokhazikika potengera kusunga chinyezi mu slurry.

Kufotokozera mwachidule, machitidwe aMtengo wa HPMCmu matope makamaka zikuphatikizapo: kusunga madzi, thickening, kutalikitsa nthawi yokhazikitsa, entraining mpweya ndi kupititsa patsogolo kumangika chomangira mphamvu, etc.