Hydroxypropyl methylcellulose amagwiritsidwa ntchito ngati dispersant popanga polyvinyl kolorayidi, ndipo ndiye wothandizira wamkulu pokonzekera PVC ndi kuyimitsidwa kwa polymerization.Pomanga makampani omangamanga, amagwiritsidwa ntchito makamaka pomanga makina monga kumanga khoma, pulasitala, caulking, etc.;makamaka pomanga zokongoletsera, amagwiritsidwa ntchito kuyika matailosi a ceramic, marble, ndi zokongoletsera zapulasitiki.Zili ndi mphamvu zomangirira kwambiri ndipo zimatha kuchepetsa kuchuluka kwa simenti..Amagwiritsidwa ntchito ngati thickener mumakampani opanga utoto, omwe amatha kupanga wosanjikiza kukhala wowala komanso wosakhwima, kupewa kuchotsa ufa, kukonza magwiridwe antchito, ndi zina.
Mumatope a simenti ndi gypsum-based slurry, hydroxypropyl methylcellulose makamaka imagwira ntchito yosungira madzi ndi kukhuthala, zomwe zimatha kusintha mphamvu yogwirizana komanso kukana kwa slurry.Zinthu monga kutentha kwa mpweya, kutentha ndi kuthamanga kwa mphepo zidzakhudza kusungunuka kwa madzi mumatope a simenti ndi zinthu zopangidwa ndi gypsum.Chifukwa chake, munyengo zosiyanasiyana, pali kusiyana kwina pakusunga madzi pazinthu zomwe zili ndi kuchuluka kofanana kwa hydroxypropyl methylcellulose.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 khalidwe la hydroxypropyl methyl cellulose ether.Zabwino kwambiri za hydroxypropyl methylcellulose mndandanda zimatha kuthetsa vuto la kusunga madzi kutentha kwambiri.M'nyengo zotentha kwambiri, makamaka m'malo otentha komanso owuma komanso zomanga zowonda kumbali yadzuwa, HPMC yapamwamba imafunikira kuti ipititse patsogolo kusunga madzi kwa slurry.
Wapamwamba kwambiri wa hydroxypropyl methylcellulose (HPMC) ali ndi mawonekedwe abwino kwambiri.Magulu ake a methoxy ndi hydroxypropoxy amagawidwa mofanana pamagulu a cellulose, omwe amatha kuonjezera maatomu a okosijeni pa hydroxyl ndi ether bond.Kutha kuyanjana ndi madzi kupanga zomangira za haidrojeni kumasintha madzi aulere kukhala madzi omangika, motero amawongolera bwino kutuluka kwamadzi komwe kumachitika chifukwa cha kutentha kwanyengo komanso kusunga madzi ambiri.Madzi amafunikira hydration kuti akhazikitse zida za simenti monga simenti ndi gypsum.Kuchuluka koyenera kwa HPMC kumatha kusunga chinyezi mumtondo kwa nthawi yayitali kuti kukhazikitsa ndi kuumitsa kupitirire.
Kuchuluka kwa hydroxypropyl methylcellulose (HPMC) yofunikira kuti mupeze kusunga madzi okwanira kumadalira:
Kumwa kwa base layer
Kupanga kwa Mortar
matope wosanjikiza makulidwe
Kufuna madzi amatope
Nthawi yoyika zinthu za simenti
Hydroxypropyl methylcellulose akhoza uniformly ndi mogwira omwazika mu simenti matope ndi gypsum ofotokoza mankhwala, ndi kukulunga particles onse olimba, ndi kupanga chonyowa filimu, chinyezi m'munsi ndi pang'onopang'ono anamasulidwa kwa nthawi yaitali, ndipo n'zogwirizana ndi zolengedwa. Ma hydration reaction of the gelled material amatsimikizira mphamvu ya mgwirizano ndi mphamvu yopondereza ya zinthuzo.
Chifukwa chake, pakumanga kwanyengo yachilimwe yotentha kwambiri, kuti mukwaniritse kusungirako madzi, ndikofunikira kuwonjezera zinthu zamtundu wa HPMC pamlingo wokwanira molingana ndi chilinganizo, apo ayi, padzakhala hydration osakwanira, kuchepetsedwa mphamvu, kusweka, kukumba. ndi kukhetsa chifukwa cha kuyanika kwambiri.mavuto, komanso kuonjezera zovuta zomangamanga ogwira ntchito.Pamene kutentha kumatsika, kuchuluka kwa madzi a HPMC omwe amawonjezeredwa akhoza kuchepetsedwa pang'onopang'ono, ndipo zotsatira zofanana zosungira madzi zimatha kutheka.
Nthawi yotumiza: Apr-10-2023