Kusunga madzi kwa efa ya hydroxypropyl methylcellulose
Kusunga madzi kwa matope osakaniza ouma kumatanthauza kuthekera kwa matope kugwira ndi kutseka madzi. Kukhuthala kwa hydroxypropyl methylcellulose ether kukakwera, kumakhala bwino kusunga madzi. Chifukwa kapangidwe ka cellulose kali ndi ma hydroxyl ndi ether bond, maatomu a okosijeni omwe ali m'magulu a hydroxyl ndi ether bond amalumikizana ndi mamolekyu amadzi kupanga ma hydrogen bond, kotero kuti madzi omasuka amakhala omangika madzi ndikumangirira madzi, motero amachita gawo pakusunga madzi.
Kusungunuka kwa Hydroxypropyl Methyl Cellulose Ether
1. Etha ya cellulose yokhala ndi tinthu tating'onoting'ono tomwe timapanga timatha kufalikira mosavuta m'madzi popanda kusonkhana, koma kuchuluka kwa kusungunuka kumakhala kochedwa kwambiri. Etha ya cellulose yomwe ili pansi pa maukonde 60 imasungunuka m'madzi kwa mphindi pafupifupi 60.
2. Etha ya cellulose yokhala ndi tinthu tating'onoting'ono ndi yosavuta kufalikira m'madzi popanda kusonkhana, ndipo kuchuluka kwa kusungunuka kumakhala kocheperako. Etha ya cellulose yoposa maukonde 80 imasungunuka m'madzi kwa mphindi pafupifupi zitatu.
3. Etha ya cellulose ya tinthu tating'onoting'ono kwambiri imafalikira mwachangu m'madzi, imasungunuka mwachangu, ndipo imapanga kukhuthala mwachangu. Etha ya cellulose pamwamba pa maukonde 120 imasungunuka m'madzi kwa masekondi pafupifupi 10-30.
Tinthu tating'onoting'ono ta hydroxypropyl methylcellulose ether tikamakhala tating'onoting'ono, timasunga bwino madzi. Pamwamba pa ether ya cellulose yopyapyala imasungunuka nthawi yomweyo ikakhudzana ndi madzi ndipo imapanga chinthu chonga gel. Guluuyo amakulunga zinthuzo kuti mamolekyu amadzi asapitirire kulowa. Nthawi zina sizingafalitsidwe mofanana ndikusungunuka ngakhale mutasakaniza kwa nthawi yayitali, ndikupanga yankho la mitambo kapena agglomeration. Tinthu tating'onoting'ono timafalikira ndikusungunuka nthawi yomweyo ikakhudzana ndi madzi kuti tipange kukhuthala kofanana.
PH value ya hydroxypropyl methylcellulose ether (yochedwa kapena mphamvu yoyambirira)
Mtengo wa pH wa opanga ma ether a hydroxypropyl methylcellulose kunyumba ndi kunja kwenikweni umayendetsedwa pafupifupi 7, womwe uli mu mkhalidwe wa acidic. Popeza pakadalibe mitundu yambiri ya mphete ya anhydroglucose mu kapangidwe ka molekyulu ya cellulose ether, mphete ya anhydroglucose ndiye gulu lalikulu lomwe limayambitsa kuchepa kwa simenti. Mphete ya anhydroglucose imatha kupanga ma calcium ions mu yankho la hydration ya simenti kupanga ma molekyulu a shuga-calcium, kuchepetsa kuchuluka kwa ma calcium ion panthawi yoyambitsa hydration ya simenti, kuletsa kupangika ndi kutsika kwa calcium hydroxide ndi makristalo amchere a calcium, ndikuchedwetsa hydration ya simenti. Ngati mtengo wa PH uli mu mkhalidwe wa alkaline, matope adzawonekera mu mkhalidwe wa mphamvu yoyambirira. Tsopano mafakitale ambiri amagwiritsa ntchito sodium carbonate kusintha pH. Sodium carbonate ndi mtundu wa chothandizira chokhazikika mwachangu. Sodium carbonate imasintha magwiridwe antchito a pamwamba pa tinthu ta simenti, imalimbikitsa mgwirizano pakati pa tinthu tating'onoting'ono, ndikuwonjezera kukhuthala kwa matope. Nthawi yomweyo, sodium carbonate imaphatikizana mwachangu ndi ma calcium ions mumatope kuti ilimbikitse kupangika kwa ettringite, ndipo simenti imakhuthala mwachangu. Chifukwa chake, pH iyenera kusinthidwa malinga ndi makasitomala osiyanasiyana pakupanga kwenikweni.
Katundu Wopumira M'mlengalenga wa Hydroxypropyl Methyl Cellulose Ether
Mphamvu yolowetsa mpweya ya hydroxypropyl methylcellulose ether makamaka imachitika chifukwa chakuti cellulose ether ndi mtundu wa surfactant. Ntchito yolumikizirana ya cellulose ether imachitika makamaka pa gas-liquid-solid interface. Choyamba, kuyambitsa thovu la mpweya, kutsatiridwa ndi dispersion ndi Wetting effect. Cellulose ether ili ndi magulu a alkyl, omwe amachepetsa kwambiri kupsinjika kwa pamwamba ndi mphamvu yolumikizirana ya madzi, zomwe zimapangitsa kuti zikhale zosavuta kupanga thovu laling'ono lotsekedwa panthawi yosakaniza madzi.
Katundu wa Gel wa Hydroxypropyl Methyl Cellulose Ether
Pambuyo poti ether ya hydroxypropyl methylcellulose yasungunuka mu mortar, magulu a methoxyl ndi hydroxypropyl omwe ali pa unyolo wa mamolekyulu amakumana ndi ma calcium ion ndi ma aluminium ion omwe ali mu slurry kuti apange gel yokhuthala ndikudzaza matope a simenti. , kuwongolera kukhuthala kwa mortar, kuchita gawo la kudzaza ndi kulimbitsa. Komabe, pamene matrix yophatikizika ili pansi pa kupanikizika, polima sangathe kuchita gawo lolimba lothandizira, kotero mphamvu ndi kupindika kwa mortar kumachepa.
Kupanga Mafilimu a Hydroxypropyl Methyl Cellulose Ether
Pambuyo poti hydroxypropyl methyl cellulose ether yawonjezedwa kuti iume, filimu yopyapyala ya latex imapangidwa pakati pa tinthu ta simenti. Filimuyi imakhala ndi mphamvu yotseka ndipo imapangitsa kuti pamwamba pa matope pakhale kuuma. Chifukwa cha kusunga bwino madzi kwa hydroxypropyl methylcellulose ether, mamolekyu okwanira amadzi amasungidwa mkati mwa matope, motero kuonetsetsa kuti simenti imauma komanso kukula kwathunthu kwa mphamvu, kukonza mphamvu yolumikizirana ya matope, komanso nthawi yomweyo imawongolera mgwirizano wa matope, imapangitsa matope kukhala ndi pulasitiki wabwino komanso kusinthasintha, komanso imachepetsa kuchepa ndi kusinthika kwa matope.
Nthawi yotumizira: Meyi-23-2023