Iqhaza le-HPMC ku-Drymix Mortars

IHydroxypropyl methylcellulose (HPMC) iyisengezo esisetshenziswa kakhulu osikeni lwe-drymix. Iphuma ku-cellulose encibilika emanzini futhi inamandla okwenza into efana nejeli uma ifakwa emanzini. Lesi sakhiwo senza i-HPMC ibe i-ejenti enhle kakhulu yokuqina nebophayo, yingakho isetshenziswa ezimbonini eziningi ezifana nezokudla, izimonyo, nezokwakha.

Emasikeni e-drymix, i-HPMC isetshenziswa njengesilungisi se-rheology, i-ejenti yokugcinwa kwamanzi, kanye ne-ejenti ehlakazayo. Inomthelela omkhulu kwikhwalithi nokusebenza kwe-drymix mortar. I-HPMC ivamise ukungezwa ngamanani amancane, ngokuvamile angu-0.1% kuya ku-0.5% ngesisindo sezinto zikasimende odakeni lwe-drymix.

Omunye wemisebenzi eyinhloko ye-HPMC ku-drymix mortars ukuthuthukisa ukusebenza kodaka. Isebenza njenge-rheology modifier ngokwandisa i-viscosity yengxube, okwenza kube lula ukusebenza nayo. Lokhu kubaluleke kakhulu kuma-drymix mortars asetshenziselwa ukufaka amathayela noma izinhlelo zokubeka phansi, lapho ukuhambisana kodaka kubalulekile ukuze kufakwe kahle.

Omunye umsebenzi obalulekile we-HPMC ku-drymix mortars amandla ayo okugcina amanzi. Uma ixutshwa namanzi, i-HPMC yenza into efana nejeli evalela ama-molecule amanzi ngaphakathi kwesakhiwo sayo. Lesi sakhiwo sisiza ukugcina i-drymix mortar imanzi, okubalulekile ekwelapheni okufanele nokubeka udaka. Kuyasiza futhi ekunciphiseni ukushwabana nokuqhekeka kodaka.

I-HPMC futhi isebenza njenge-ejenti ehlakazayo osikeni lwe-drymix. Kuyasiza ukuhlukanisa izigaxa zezinhlayiya, okwenza kube lula ukuthi zixubane ngokulinganayo kulo lonke udaka. Lesi sakhiwo sibaluleke kakhulu kuma-drymix mortars aqukethe izingxenye eziningi, njengesihlabathi, usimende, nezithasiselo ezihlukahlukene.

Ngokungeziwe kule misebenzi eyinhloko, i-HPMC ingase futhi inikeze ezinye izinzuzo ku-drymix mortars. Isibonelo, ingathuthukisa ukunamathela kodaka ku-substrate, okubalulekile kuzinhlelo zokusebenza ezifana nokufakwa kwe-tile. Kungase futhi kuthuthukise ukuguquguquka kodaka, kukwenze kungabi lula ukuqhekeka nokuphuka ngaphansi kwengcindezi.

Lapho ukhetha i-HPMC ezosetshenziswa ku-drymix mortars, izici ezimbalwa zidinga ukucatshangelwa. Okubaluleke kakhulu kulezi zici yi-viscosity ye-HPMC. I-viscosity ye-HPMC izonquma izinga lokujiya kanye nokugcinwa kwamanzi ehlinzeka ngodaka. Ezinye izici ezidinga ukucatshangelwa zihlanganisa i-pH ye-HPMC, izinga layo lokushintshwa (DS), nosayizi wayo wezinhlayiyana.

I-pH ye-HPMC ibalulekile ngoba ingathinta isikhathi sokumiswa kodaka. Uma i-pH iphezulu kakhulu noma iphansi kakhulu, ingaba nomthelela ekusebenzeni kwamakhemikhali okwenzeka phakathi nenqubo yokwelapha, okuholela ezinkingeni ezinjengokuncipha kwamandla noma ukwanda kokuncipha.

I-DS ye-HPMC iyisilinganiso sokuthi mangaki amaqembu e-hydroxypropyl ne-methyl anamathiselwe kumgogodla we-cellulose. I-DS ephakeme isho ukuthi kukhona amaqembu amaningi e-hydroxypropyl kanye ne-methyl, okuholela ku-HPMC encibilikayo emanzini ne-viscous. I-DS ephansi isho ukuthi ambalwa amaqembu e-hydroxypropyl kanye ne-methyl akhona, okuholela ku-HPMC engancibiliki kalula emanzini futhi ne-viscous encane.

Ubukhulu bezinhlayiyana ze-HPMC bungaphinda buthinte ukusebenza kwayo osikeni lwe-drymix. Osayizi bezinhlayiyana ezinkulu bangabangela ukusatshalaliswa okungalingani kwe-HPMC kulo lonke udaka, kuyilapho osayizi bezinhlayiyana ezincane kungabangela ukunqwabelana kanye nokuhlangana kwe-HPMC.

Sengiphetha, i-HPMC iyisengezo esibalulekile ku-drymix mortars. Ihlinzeka ngezinhlobonhlobo zezinzuzo, okuhlanganisa ukusebenza okuthuthukisiwe, ukugcinwa kwamanzi, nokuhlakazeka kwezinhlayiya.