Hydroxypropyl methylcellulose Hpmc posungira madzi zotsatira ndi mfundo

Mumatope a simenti ndi gypsum-based slurry, HPMC makamaka imagwira ntchito yosunga madzi ndikukhuthala. Ikhoza kupititsa patsogolo mphamvu yomanga ndi anti-pituitarism ya slurry.

Kutentha kwa mpweya, kutentha kwa mpweya komanso kuthamanga kwa mpweya kumakhudza kuchuluka kwa madzi mumatope a simenti ndi gypsum.

Munthawi zosiyanasiyana, pali kusiyana kwina pakusunga madzi kwa HPMC. Pakumanga kwenikweni, mphamvu yosungira madzi ya slurry imatha kusinthidwa ndikuwonjezera kapena kuchepetsa kuchuluka kwa HPMC yowonjezeredwa. Kusungidwa kwa madzi kwa methyl cellulose ether pansi pa kutentha kwakukulu ndi chizindikiro chofunikira kusiyanitsa ubwino wa methyl cellulose ether. Zabwino kwambiri HPMC mndandanda mankhwala angathe kuthetsa vuto la posungira madzi pansi kutentha.

M'nyengo yotentha kwambiri, makamaka m'madera otentha ndi owuma komanso zomangamanga zowonongeka kumbali ya dzuwa. HPMC yapamwamba kwambiri ikufunika kuti ipititse patsogolo kusunga madzi kwa slurry. Ikhoza kupititsa patsogolo mphamvu ya atomu ya okosijeni pa gulu la hydroxyl kupanga mgwirizano wa haidrojeni ndi mgwirizano wa ether. Pangani madzi aulere kukhala madzi omangika, kuti muzitha kuwongolera bwino kutuluka kwa madzi chifukwa cha kutentha kwambiri. Mulingo wapamwamba wosunga madzi.

Ma cellulose apamwamba kwambiri a HPMC amatha kumwazikana moyenera komanso moyenera mumatope a simenti ndi zinthu zopangidwa ndi gypsum. Ndipo kukulunga zonse zolimba particles kupanga wetting filimu. Chinyezi m'munsi wosanjikiza amamasulidwa pang'onopang'ono kwa nthawi yayitali, ndipo inorganic gelling material amakumana ndi hydration reaction. Potero kuonetsetsa mphamvu ya mgwirizano ndi mphamvu yopondereza ya zinthuzo. Choncho, iyenera kumangidwa m'nyengo yozizira kwambiri kuti ikwaniritse zotsatira zosungira madzi. Onetsetsani kuti muwonjezere mankhwala apamwamba a HPMC molingana ndi chilinganizo, apo ayi padzakhala mavuto abwino monga osakwanira hydration. Koma zimawonjezeranso zovuta zomanga za ogwira ntchito. Pamene kutentha kumatsika, kuchuluka kwa HPMC kumatha kuchepetsedwa pang'onopang'ono, ndipo zotsatira zosungira madzi zimathanso kupezeka.