HPMC makamaka imagwira ntchito yosunga madzi ndikukhuthala mumatope a simenti ndi matope opangidwa ndi gypsum, omwe amatha kupititsa patsogolo mgwirizano ndi kukana kwa slurry.
Zinthu monga kutentha kwa mpweya, kutentha ndi kuthamanga kwa mphepo zidzakhudza kuchuluka kwa madzi mumatope a simenti ndi gypsum. Chifukwa chake, munyengo zosiyanasiyana, kuwonjezera kuchuluka komweko kwa HPMC, kusungidwa kwamadzi kwazinthuzo kumakhala ndi zosiyana. Kusungidwa kwa madzi kwa methyl cellulose ether pa kutentha kwakukulu ndi chizindikiro chofunikira kusiyanitsa ubwino wa methyl cellulose ether. HPMC yabwino kwambiri imatha kuthetsa vuto la kusunga madzi pansi pa kutentha kwakukulu. M'nyengo zotentha kwambiri, makamaka m'malo otentha komanso owuma komanso zomangira zowonda kwambiri kumbali yadzuwa, HPMC yapamwamba imafunika kuti ipititse patsogolo kusunga madzi kwa slurry. Apamwamba HPMC, ndi chifanane zabwino kwambiri, methoxy ake ndi hydroxypropoxy magulu ndi wogawana anagawira pamodzi mapadi unyolo maselo, amene angathe kusintha luso la maatomu mpweya pa hydroxyl ndi efa zomangira kugwirizana ndi madzi kupanga zomangira haidrojeni, kuti madzi aulere amakhala omangidwa madzi, kuti mogwira kulamulira evaporation mkulu ndi kutentha kwa madzi chifukwa cha kutentha kwa madzi.
Zapamwamba mapadi HPMC akhoza uniformly ndi mogwira omwazika mu matope simenti ndi gypsum ofotokoza mankhwala, ndi encapsulates onse olimba particles, ndi kupanga filimu wetting, ndi chinyezi m'munsi pang'onopang'ono anamasulidwa kwa nthawi yaitali. The hydration anachita wa zinthu coagulating kumachitika, potero kuonetsetsa kugwirizana mphamvu ndi compressive mphamvu zakuthupi. Choncho, pomanga kutentha kwa chilimwe, kuti mukwaniritse zotsatira za kusunga madzi, m'pofunika kuwonjezera mankhwala apamwamba a HPMC molingana ndi ndondomekoyi, apo ayi, padzakhala hydration yosakwanira, kuchepetsa mphamvu, kusweka, kupukuta ndi kugwa chifukwa cha kuyanika mofulumira kwambiri. Zimawonjezeranso zovuta zomanga kwa ogwira ntchito. Pamene kutentha kumachepa, kuwonjezereka kwa HPMC kumatha kuchepetsedwa pang'onopang'ono, ndipo zotsatira zofanana zosungira madzi zimatha kupezeka.
Nthawi yotumiza: Mar-26-2022