Kusunga madzi kwa hydroxypropyl methylcellulose

Hydroxypropyl methylcellulose (HPMC) ndi ether ya cellulose yosakhala ionic yopangidwa kuchokera ku cellulose yachilengedwe ya polymer kudzera mu njira zingapo zamakemikolo. Hydroxypropylmethylcellulose (HPMC) ndi ufa woyera wopanda fungo, wopanda kukoma, wopanda poizoni womwe ungasungunuke m'madzi ozizira kuti upange yankho lowonekera bwino la viscous. Ili ndi mphamvu zokhuthala, kumangirira, kufalitsa, kusakaniza, kupanga filimu, kuyimitsa, kulowetsa, kulowetsa gelling, kugwira ntchito pamwamba, kusunga chinyezi ndikuteteza colloid. Mu matope, ntchito yofunika kwambiri ya hydroxypropyl methylcellulose ndikusunga madzi, komwe ndi kuthekera kwa matope kusunga madzi.

1. Kufunika kosunga madzi pa matope

Mtondo wokhala ndi madzi ochepa umatha kusungunuka mosavuta komanso kulekanitsidwa panthawi yonyamula ndi kusungira, kutanthauza kuti, madzi amayandama pamwamba, mchenga ndi simenti pansi pake, ndipo ayenera kusunthidwanso musanagwiritse ntchito. Mtondo wokhala ndi madzi ochepa, panthawi yopaka, bola ngati matope osakanikirana bwino akhudzana ndi chipika kapena maziko, matope osakanikirana bwino adzatengedwa ndi madzi, ndipo nthawi yomweyo, pamwamba pa matopewo padzasanduka nthunzi kupita mumlengalenga, zomwe zimapangitsa kuti madzi a matopewo atayike. Madzi osakwanira adzakhudza kuchuluka kwa madzi a simenti ndikukhudza kukula kwabwinobwino kwa mphamvu ya matope, zomwe zimapangitsa kuti mphamvu ya matope ikhale yochepa, makamaka mphamvu yolumikizirana pakati pa matope olimba ndi maziko, zomwe zimapangitsa kuti matopewo asweke ndikugwa.

2. Njira yachikhalidwe yowongolera kusunga madzi mu matope

Njira yachikhalidwe ndiyo kuthirira pansi, koma sizingatheke kuonetsetsa kuti pansi pake panyowa mofanana. Cholinga chabwino kwambiri cha matope a simenti pa maziko ndi ichi: madzi opangidwa ndi simenti amalowa pansi pamodzi ndi njira yomwe maziko amayamwa madzi, ndikupanga "kugwirizana kofunikira" ndi maziko, kuti akwaniritse mphamvu yolumikizirana yofunikira. Kuthirira mwachindunji pamwamba pa maziko kumayambitsa kufalikira kwakukulu mu kuyamwa kwa madzi pa maziko chifukwa cha kusiyana kwa kutentha, nthawi yothirira, komanso kufanana kwa kuthirira. Pansi pake pamakhala kuyamwa kochepa kwa madzi ndipo padzapitiriza kuyamwa madzi mu matope. Madzi a simenti asanapitirire, madzi amayamwa, zomwe zimakhudza kulowa kwa madzi ndi zinthu zothirira simenti mu matrix; maziko amakhala ndi kuyamwa kwakukulu kwa madzi, ndipo madzi mu matope amatsikira ku maziko. Liwiro losamuka lapakati ndi lochepa, ndipo ngakhale wosanjikiza wolemera madzi umapangidwa pakati pa matope ndi matrix, zomwe zimakhudzanso mphamvu yolumikizirana. Chifukwa chake, kugwiritsa ntchito njira yodziwika bwino yothirira madzi pansi sikungothetsa vuto la kuyamwa madzi ambiri pansi pa khoma, komanso kudzakhudza mphamvu yomangirira pakati pa matope ndi pansi, zomwe zimapangitsa kuti pakhale mabowo ndi ming'alu.

3. Kusunga madzi moyenera

(1) Kagwiridwe kabwino ka madzi kamene kamasunga bwino madzi kamatsegula matopewo kwa nthawi yayitali, ndipo ali ndi ubwino womanga malo akuluakulu, moyo wautali wa ntchito m'botolo, komanso kusakaniza ndi kugwiritsa ntchito matopewo.

(2) Kusunga bwino madzi kumapangitsa simenti yomwe ili mu matope kukhala ndi madzi okwanira, zomwe zimapangitsa kuti matopewo azigwira bwino ntchito.

(3) Mtondo uli ndi mphamvu yabwino kwambiri yosunga madzi, zomwe zimapangitsa kuti matopewo asapatuke komanso asatuluke magazi ambiri, zomwe zimapangitsa kuti matopewo azigwira ntchito bwino komanso kuti asamangidwe bwino.