Hydroxypropyl methyl cellulose ether (HPMC) ili ndi ntchito yosunga madzi ndikuwonjezera mumatope a simenti ndi matope a gypsum, ndipo imatha kusintha bwino kumamatira komanso kukana kosunthika kwa zinthu zamatope.
Zinthu monga kutentha kwa gasi, kutentha ndi kuthamanga kwa mpweya zimawononga kwambiri kuchuluka kwa chinyezi kuchokera kumatope a simenti ndi gypsum. Chifukwa chake, munyengo iliyonse, pali kusiyana kwina pakuwonjezera kuchuluka kwazinthu za hydroxypropyl methylcellulose ether (HPMC) kuti musunge madzi moyenera.
Pothira konkriti, mphamvu yotsekera madzi imatha kusinthidwa ndikuwonjezera ndikuchepetsa kutuluka kwagawo. Mlingo wosungira madzi wa hydroxypropyl methyl cellulose ether pa kutentha kwakukulu ndiye mtengo wofunikira wosiyanitsa mtundu wa hydroxypropyl methyl cellulose ether.
Mankhwala apamwamba a hydroxypropyl methylcellulose (HPMC) amatha kuthetsa vuto la kusunga madzi otentha kwambiri. M'nyengo yotentha kwambiri, makamaka m'madera otentha ndi amvula komanso kumanga chromatography, hydroxypropyl methylcellulose ether (HPMC) yapamwamba kwambiri imafunika kuti madzi asungidwe bwino.
Hydroxypropyl methylcellulose ether (HPMC) yapamwamba kwambiri, ndipo magulu ake a methoxyl ndi hydroxypropyl amagawidwa mofanana pamagulu a maselo a methylcellulose, omwe angalimbikitse kubadwa kwa mamolekyu a okosijeni pa hydroxyl ndi ether. Kutha kugwira ntchito ndi ma covalent bonds.
Ikhoza kulamulira bwino kutuluka kwa madzi chifukwa cha nyengo yotentha ndikukhala ndi mphamvu yotseka madzi. Wapamwamba kwambiri wa hydroxypropyl methylcellulose (HPMC) atha kugwiritsidwa ntchito pamisiri yosakanikirana yamatope ndi pulasitala.
Gwirizanitsani particles zonse zolimba kuti mupange filimu yonyowa, ndipo chinyezi muzochitikazo chidzamasulidwa pang'onopang'ono kwa nthawi yaitali, ndikuchitapo kanthu ndi organic matter ndi kolajeni kuti mutsimikizire kuti mgwirizanowu ndi wamphamvu komanso wolimba.
Choncho, pofuna kupulumutsa madzi pamalo omanga m'nyengo yotentha, tiyenera kuwonjezera mankhwala apamwamba kwambiri a hydroxypropyl methylcellulose (HPMC) malinga ndi Chinsinsi, mwinamwake, zidzakhala chifukwa cha kusowa kwa coagulation, kuchepa mphamvu, Kuphwanya, ng'oma ya mpweya. ndi zovuta zina zamtundu wazinthu zomwe zimayambitsidwa ndi kuyanika mwachangu.
Izi zimawonjezeranso vuto la zomangamanga kwa ogwira ntchito. Pamene kutentha kumachepa, kuchuluka kwa hydroxypropyl methylcellulose ether (HPMC) kumachepa pang'onopang'ono kuti akwaniritse chinyezi chomwecho.
Nthawi yotumiza: Apr-11-2023