Mu putty, matope a simenti ndi matope opangidwa ndi gypsum,Mtengo wa HPMChydroxypropyl methylcellulose ether makamaka amatenga gawo la kusunga madzi ndi thickening, ndipo akhoza bwino patsogolo adhesion ndi sag kukana wa slurry. Zinthu monga kutentha kwa mpweya, kutentha ndi kuthamanga kwa mphepo zidzakhudza kusinthasintha kwa madzi mu putty, matope a simenti ndi zinthu zochokera ku gypsum. Chifukwa chake, munyengo zosiyanasiyana, pali kusiyana kwina pakusunga madzi pazinthu zomwe zili ndi kuchuluka komweko kwa HPMC. Pakumanga kwapadera, 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 zotentha kwambiri, makamaka m'malo otentha komanso owuma komanso zomangira zowonda kwambiri kumbali yadzuwa, HPMC yapamwamba imafunika kuti ipititse patsogolo kusunga madzi kwa slurry. HPMC yapamwamba imatha kutembenuza madzi aulere mumtondo kukhala madzi omangika, potero amawongolera bwino kutuluka kwamadzi komwe kumachitika chifukwa cha kutentha kwambiri komanso kusunga madzi ambiri.
Ma cellulose apamwamba kwambiri a methyl amatha kumwazikana mokhazikika mumatope a simenti ndi gypsum, ndikukulunga tinthu tolimba, ndikupanga filimu yonyowa, ndipo madziwo adzamasulidwa pang'onopang'ono kwa nthawi yayitali. A hydration reaction zimachitika, potero kuonetsetsa mphamvu ya mgwirizano ndi mphamvu yopondereza ya zinthuzo. Choncho, pomanga chilimwe chotentha kwambiri, kuti mukwaniritse kusungirako madzi, m'pofunika kuwonjezera zinthu za HPMC zapamwamba kwambiri molingana ndi ndondomekoyi. Ngati pawiri HPMC ntchito, osakwanira hydration, kuchepetsa mphamvu, akulimbana, ndi voids zidzachitika chifukwa kwambiri kuyanika. Mavuto abwino monga ng'oma ndi kukhetsa kumawonjezeranso zovuta zomanga kwa ogwira ntchito. Pamene kutentha kumatsika, kuchuluka kwa HPMC komwe kumawonjezeredwa kumatha kuchepetsedwa pang'onopang'ono, ndipo zotsatira zosungira madzi zomwezo zitha kutheka.
Zomwe zimachitika zimayendetsa ndendende kupanga kwaMtengo wa HPMC, ndipo kulowetsedwa kwake kuli kokwanira ndipo kufanana kwake ndikwabwino kwambiri. Njira yake yamadzimadzi ndiyomveka bwino komanso yowonekera, yokhala ndi ulusi waulere wochepa. Kugwirizana ndi ufa wa rabara, simenti, laimu ndi zipangizo zina zazikulu zimakhala zolimba kwambiri, zomwe zingapangitse kuti zipangizo zazikulu ziziyenda bwino. Komabe, HPMC ndi osauka anachita ali ambiri ulusi ufulu, m'malo kugawa m'malo, osauka madzi posungira ndi katundu zina, chifukwa mu kuchuluka kwa madzi evaporation mu nyengo kutentha. Komabe, zomwe zimatchedwa HPMC (mtundu wamagulu) wokhala ndi zonyansa zambiri zimakhala zovuta kugwirizanitsa wina ndi mzake, kotero kuti kusungirako madzi ndi zinthu zina ndizoipa kwambiri. Pamene HPMC yosauka ikugwiritsidwa ntchito, mavuto monga mphamvu yochepa ya slurry, nthawi yochepa yotsegula, ufa, kusweka, kupukuta ndi kukhetsa zidzayambika, zomwe zidzawonjezera zovuta zomanga ndikuchepetsa kwambiri khalidwe la nyumbayo.
Nthawi yotumiza: Apr-28-2024