Hydroxypropyl methylcellulose imagwiritsidwa ntchito makamaka ngati chosungunula popanga polyvinyl chloride, ndipo ndiye wothandizira wamkulu wokonzekera PVC ndi suspension polymerization. Mu ntchito yomanga makampani omanga, imagwiritsidwa ntchito kwambiri pakupanga makina monga kumanga makoma, kupaka pulasitala, kuyika ma caulking, ndi zina zotero; makamaka pakupanga zokongoletsera, imagwiritsidwa ntchito kuyika matailosi a ceramic, marble, ndi zokongoletsa za pulasitiki. Ili ndi mphamvu yayikulu yolumikizirana ndipo imatha kuchepetsa kuchuluka kwa simenti. . Imagwiritsidwa ntchito ngati chokhuthala mumakampani opanga utoto, chomwe chingapangitse kuti wosanjikizawo ukhale wowala komanso wofewa, kupewa kuchotsa ufa, kukonza magwiridwe antchito, ndi zina zotero.
Mu simenti ndi matope okhala ndi gypsum, hydroxypropyl methylcellulose imagwira ntchito makamaka posunga ndi kukhuthala kwa madzi, zomwe zingathandize bwino kulimbitsa mphamvu yogwirizana komanso kukana kwa matope. Zinthu monga kutentha kwa mpweya, kutentha ndi kuthamanga kwa mphepo zimakhudza kuchuluka kwa madzi mu matope a simenti ndi zinthu zopangidwa ndi gypsum. Chifukwa chake, m'nyengo zosiyanasiyana, pali kusiyana pakati pa zotsatira za kusunga madzi ndi zinthu zomwe zimawonjezeredwa ndi hydroxypropyl methylcellulose. Pakupanga kwake, zotsatira za kusunga madzi mu matope zitha kusinthidwa powonjezera kapena kuchepetsa kuchuluka kwa HPMC komwe kumawonjezeredwa. Kusunga madzi mu methyl cellulose ether pansi pa kutentha kwakukulu ndi chizindikiro chofunikira chosiyanitsa mtundu wa hydroxypropyl methyl cellulose ether. Zogulitsa zabwino kwambiri za hydroxypropyl methylcellulose zimatha kuthetsa vuto la kusunga madzi pansi pa kutentha kwakukulu. M'nyengo yotentha kwambiri, makamaka m'malo otentha komanso ouma komanso kapangidwe kowonda kumbali ya dzuwa, HPMC yapamwamba imafunika kuti iwonjezere kusunga madzi mu matope.
Hydroxypropyl methylcellulose (HPMC) yapamwamba kwambiri ili ndi kufanana kwabwino kwambiri. Magulu ake a methoxy ndi hydroxypropoxy amagawidwa mofanana mu unyolo wa maselo a cellulose, zomwe zimatha kuwonjezera maatomu a okosijeni pa ma hydroxyl ndi ether bonds. Kuthekera kogwirizana ndi madzi kupanga ma hydrogen bonds kumasintha madzi omasuka kukhala madzi omangika, motero kuwongolera bwino kuuluka kwa madzi komwe kumachitika chifukwa cha kutentha kwambiri komanso kukwaniritsa kusunga madzi ambiri. Madzi amafunika kuti azitha kusungunuka kuti akhazikitse zinthu zolimbitsa monga simenti ndi gypsum. Kuchuluka koyenera kwa HPMC kumatha kusunga chinyezi mu matope kwa nthawi yayitali kuti njira yokhazikika ndi kuuma ipitirire.
Kuchuluka kwa hydroxypropyl methylcellulose (HPMC) komwe kumafunika kuti madzi asungidwe mokwanira kumadalira:
Kuyamwa kwa maziko
Kupangidwa kwa Mchere
Kukhuthala kwa matope
Kufunika kwa madzi a m'matope
Nthawi yokhazikitsa zinthu zomangira simenti
Hydroxypropyl methylcellulose imatha kufalikira mofanana komanso moyenera mu simenti ndi zinthu zopangidwa ndi gypsum, ndikukulunga tinthu tonse tolimba, ndikupanga filimu yonyowetsa, chinyezi chomwe chili pansi chimatulutsidwa pang'onopang'ono kwa nthawi yayitali, ndipo chimagwirizana ndi zinthu zopanda chilengedwe. Kuthamanga kwa madzi kwa zinthu zopangidwa ndi gelled kumatsimikizira mphamvu yomangirira ndi mphamvu yokakamiza ya zinthuzo.
Chifukwa chake, pomanga nthawi yotentha kwambiri yachilimwe, kuti madzi asungidwe bwino, ndikofunikira kuwonjezera zinthu zabwino kwambiri za HPMC mokwanira motsatira njira yopangira, apo ayi, sipadzakhala madzi okwanira, mphamvu yochepa, ming'alu, mabowo ndi kutayika kwa madzi chifukwa cha mavuto ouma kwambiri, komanso kuwonjezera zovuta zomangira. Pamene kutentha kukutsika, kuchuluka kwa madzi omwe HPMC imawonjezera kumatha kuchepetsedwa pang'onopang'ono, ndipo zotsatira zomwezo zosungira madzi zitha kupezeka.
Nthawi yotumizira: Epulo-10-2023