Kusunga madzi kwama cellulose ethers
Kusunga madzi mumatope kumatanthauza kuthekera kwa matope kusunga ndi kutseka chinyezi. Kuchuluka kwa kukhuthala kwa cellulose ether, kumapangitsa kuti madzi asungidwe bwino. Chifukwa mapangidwe a cellulose amakhala ndi ma hydroxyl ndi ether, atomu ya okosijeni pagulu la hydroxyl ndi ether bond imalumikizidwa ndi molekyulu yamadzi kuti ipange zomangira za haidrojeni, kotero kuti madzi aulere amakhala omangika madzi ndikuwongolera madzi, motero amasewera gawo la madzi. kusunga.
Kusungunuka kwacellulose ether
1. Coarser cellulose ether imamwazikana mosavuta m'madzi popanda kuphatikizika, koma kusungunuka kumakhala pang'onopang'ono.Ma cellulose etherspansi pa mauna 60 amasungunuka m'madzi kwa mphindi pafupifupi 60.
2. Tinthu tating'ono ta cellulose ether timamwazikana mosavuta m'madzi popanda agglomeration, ndipo kusungunuka kumakhala kochepa. Zoposa 80 maunacellulose etherimasungunuka m'madzi kwa mphindi zitatu.
3. Ultra-fine cellulose ether imamwazika mwachangu m'madzi, imasungunuka mwachangu, ndikupanga kukhuthala kofulumira. Zoposa 120 maunacellulose etherimasungunuka m'madzi kwa masekondi 10-30.
Kuchuluka kwa tinthu ta cellulose ether, kumapangitsa kuti madzi asungidwe bwino. Pamwamba pa coarseCellulose Ether HEMCamasungunuka atangokumana ndi madzi ndikupanga chodabwitsa cha gel. Guluuyo amakulunga zinthuzo kuti mamolekyu amadzi asapitirire kulowa, ndipo nthawi zina sangathe kumwazikana ndikusungunuka pakapita nthawi yayitali, ndikupanga njira yowongoka ya turbidized kapena caking. The zabwino particles yomweyo kumwazikana ndi kupasuka kukhudzana ndi madzi kupanga yunifolomu mamasukidwe akayendedwe.
Kusintha kwa cellulose ether
The mpweya wa mapadi etere makamaka chifukwa mapadi etere ndi mtundu wa surfactant, ndi interfacial ntchito ya mapadi etere makamaka zimachitika pa mpweya-zamadzimadzi-olimba mawonekedwe, choyamba poyambitsa thovu, kenako kubalalitsidwa ndi kunyowetsa. Ma cellulose ethers ali ndi magulu a alkyl, omwe amachepetsa kwambiri kugwedezeka kwapamadzi ndi mphamvu yamadzi, zomwe zimapangitsa kuti madzi amadzimadzi azitulutsa mosavuta ming'oma yaing'ono yotsekedwa panthawi yachisokonezo.
Gelatincity ya cellulose ethers
Pambuyo pa kusungunuka kwa cellulose ether mumatope, gulu la methoxy ndi gulu la hydroxypropyl pa unyolo wa maselo lidzalumikizana ndi ayoni a calcium ndi aluminiyamu mu slurry kuti apange gel osakaniza ndi kudzaza matope a simenti, kupititsa patsogolo kachulukidwe ka matope a simenti. matope ndikusewera gawo la kudzaza kosinthika ndi kulimbikitsa. Komabe, masanjidwewo akakanikizidwa, polima sangathe kuchitapo kanthu mokhazikika, kotero mphamvu ndi kupindika kwa chiŵerengero cha matope kumachepa.
Mafilimu kupanga katundu wa cellulose ether
Filimu yopyapyala ya latex imapangidwa pakati pa cellulose ether ndi simenti particles pambuyo pa hydration, yomwe imakhala ndi kusindikiza komanso kumapangitsa kuyanika kwapamwamba kwa matope. Chifukwa cha kusungidwa bwino kwa madzi a cellulose ether, mamolekyu amadzi okwanira amasungidwa mkati mwa matope, kuti atsimikizire kuti hydration ndi kuumitsa simenti ndikukula kwathunthu kwa mphamvu, kupititsa patsogolo mphamvu yolumikizira matope, ndikuwongolera matope. cohesiveness wa matope, kotero kuti matope ndi pulasitiki wabwino ndi kusinthasintha, ndi kuchepetsa shrinkage mapindikidwe matope.
Nthawi yotumiza: Mar-12-2024