HPMC imasintha madzi amatope

Monga zida zomangira zomwe zimagwiritsidwa ntchito kwambiri pantchito yomanga, matope amagwira ntchito yofunika kwambiri pamapangidwe komanso magwiridwe antchito. The fluidity of mortar ndi chimodzi mwa zizindikiro zofunika zomwe zimakhudza ntchito yake yomanga. Madzi abwino amathandizira kuti ntchito yomangayo ikhale yabwino komanso kuti nyumbayo ikhale yabwino. Pofuna kupititsa patsogolo kusungunuka kwa madzi ndi kugwira ntchito kwa matope, zowonjezera zosiyanasiyana zimagwiritsidwa ntchito pakusintha. Mwa iwo,hydroxypropyl methylcellulose (HPMC), monga polima yosungunuka m'madzi yomwe imagwiritsidwa ntchito kwambiri, imakhala ndi gawo lofunikira mumatope. .

Makhalidwe oyambira a HPMC: HPMC ndi chinthu chosungunuka m'madzi cha polima chopangidwa kuchokera ku cellulose yachilengedwe yosinthidwa ndi mankhwala. Ili ndi makulidwe abwino kwambiri, gelling, kusunga madzi ndi zina. Izo sizisungunuka m'madzi, koma zimatha kupanga yankho la viscous m'madzi, choncho nthawi zambiri zimagwiritsidwa ntchito pomanga, zokutira, mankhwala ndi zina. Akagwiritsidwa ntchito ngati chowonjezera chamatope, HPMC imatha kusintha bwino madzi, kusunga madzi komanso kugwira ntchito kwa matope.

Mphamvu yamakina a HPMC pamadzi amatope:

Kukhuthala kwamphamvu: HPMC yokha imakhala ndi kukhuthala kwakukulu. Akawonjezeredwa kumatope, amatha kuwonjezera kukhuthala kwa matope. The thickening zotsatira ndi chifukwa mamolekyu HPMC kupanga maukonde dongosolo madzi, amene amayamwa madzi ndi kufutukuka, kuonjezera mamasukidwe akayendedwe a gawo madzi. Njirayi imalola kuti madzi a matope asinthe. Pamene HPMC zili mu matope ndi mkulu, kuyenda kwaulere kwa madzi adzakhala oletsedwa pa mlingo winawake, kotero fluidity wonse wa matope kusonyeza kusintha zina.

Limbikitsani kusungidwa kwa madzi: HPMC ikhoza kupanga filimu yopyapyala mumatope kuti muchepetse kutuluka kwa madzi ndikuwongolera kusunga madzi mumatope. Tondo lokhala ndi madzi osungira bwino limatha kugwira ntchito kwa nthawi yayitali, zomwe ndizofunikira kuti ntchito yomanga ikhale yosavuta pomanga. Kusungidwa kwamadzi kwambiri kumatha kuletsa matope kuti asaume msanga komanso kuwongolera nthawi yomanga komanso kugwira ntchito bwino kwa matope.

Kubalalitsidwa: HPMC akhoza kupanga njira colloidal m'madzi, amene angathe kusintha kubalalitsidwa pakati matope zigawo zikuluzikulu. The fluidity wa matope si zogwirizana ndi kuchuluka kwa simenti, mchenga ndi admixtures, komanso zogwirizana kwambiri kubalalitsidwa kwa zigawo zikuluzikuluzi. Ndi kusintha kuchuluka kwa HPMC, zigawo zikuluzikulu mu matope akhoza kumwazikana kwambiri wogawana, potero kupititsa patsogolo fluidity.

Gelling effect: HPMC imatha kulimbikitsa kugawa kwambiri tinthu tating'ono mumatope ndikuwongolera kukhazikika kwa kapangidwe kake. Mwa kuwongolera momwe ma gelling amagwirira ntchito, HPMC imatha kukhala ndi madzi okhazikika amatope panthawi yosungirako nthawi yayitali ndikupewa kuchepa kwamadzi chifukwa cha kuchedwa kwa nthawi.

Kupititsa patsogolo pulasitiki: Kuwonjezera kwa HPMC kungathenso kupititsa patsogolo pulasitiki yamatope, kupangitsa kuti ikhale yosavuta kugwira ntchito komanso kukhala ndi pulasitiki yabwino panthawi yomanga. Mwachitsanzo, popaka khoma, madzi abwino ndi pulasitiki amatha kuchepetsa kuphulika kwa ming'alu ndikupangitsa kuti pulasitala ikhale yabwino.

Kugwiritsa ntchito bwino kwa HPMC pakusintha kwamadzimadzi amatope:

Kuwongolera Mlingo: Mlingo wa HPMC umakhudza mwachindunji kusungunuka kwa matope. Nthawi zambiri, kuchuluka kwa HPMC kukakhala kocheperako, kuchuluka kwa madzi ndi kusunga madzi mumatope kumatha kusintha kwambiri. Komabe, kuchuluka kwa HPMC kungayambitse kukhuthala kwa matope kukhala okwera kwambiri, zomwe zimachepetsa madzi ake. Chifukwa chake, kuchuluka kwa HPMC kowonjezera kumafunikira kuwongolera moyenera malinga ndi zosowa zenizeni pazogwiritsa ntchito.

Synergy ndi admixtures ena: Kuwonjezera HPMC, admixtures ena nthawi zambiri anawonjezera matope, monga superplasticizers, retarders, etc. The synergy pakati admixtures ndi HPMC akhoza bwino kulamulira otaya matope. kugonana. Mwachitsanzo, superplasticizers akhoza kuchepetsa kuchuluka kwa madzi mu matope ndi kusintha fluidity wa matope, pamene HPMC akhoza kusintha madzi posungira ndi ntchito yomanga pamene kusunga mamasukidwe akayendedwe matope.

Kusintha kwamitundu yosiyanasiyana yamatope: Mitundu yosiyanasiyana yamatope imakhala ndi zofunikira zosiyanasiyana zamadzimadzi. Mwachitsanzo, matope opaka pulasitala amakhala ndi zofunikira zambiri zamadzimadzi, pomwe matope amiyala amasamalira kwambiri kulumikizana kwake ndi makulidwe ake. Panthawi imeneyi, kuchuluka ndi mtundu wa HPMC anawonjezera ayenera wokometsedwa ndi kusintha malinga ndi zofunika za matope osiyanasiyana kuonetsetsa mulingo woyenera fluidity ndi bwino.

Monga chowonjezera chamatope chomwe chimagwiritsidwa ntchito kwambiri,Mtengo wa HPMCamatha kusintha bwino madzi a matope kudzera mu thickening, kusunga madzi, kubalalitsidwa, gelling, ndi zina zotero. Komabe, mlingo wa HPMC uyenera kusinthidwa molondola malinga ndi momwe ntchito ikugwiritsidwira ntchito kuti tipewe kugwiritsa ntchito mopitirira muyeso komwe kumabweretsa kuchepa kwa madzi. Ndi kuwongolera kosalekeza kwa magwiridwe antchito a matope pantchito yomanga, kuwongolera kwa HPMC kumakhala ndi chiyembekezo chogwiritsa ntchito mtsogolo.