Ntchito ya cellulose ether mumatope

Cellulose etherkusunga madzi

Kusunga madzi mumatope kumatanthauza kuthekera kwa matope kuti agwire ndikutseka madzi.Kuchuluka kwa kukhuthala kwa cellulose ether, kumapangitsa kuti madzi asungidwe bwino.Chifukwa mapangidwe a cellulose ali ndi hydroxyl ndi ether bond, hydroxyl ndi ether bond gulu la maatomu okosijeni ndi mamolekyu amadzi kuti apange chomangira cha haidrojeni, kuti madzi aulere kukhala madzi omangira, okhotakhota, kuti agwire ntchito yosungira madzi.

Kusungunuka kwacellulose ether

1. The coarser cellulose ether ndi yosavuta kumwazikana m'madzi popanda agglomerating, koma mlingo Kusungunuka ndi pang'onopang'ono.Ma cellulose ether pansi pa 60 mesh amasungunuka m'madzi kwa mphindi 60.

2. Fine particles of cellulose ether in water is easy kubalalitsa osati agglomerate, ndi Kusungunuka mlingo ndi zolimbitsa.Cellulose ether pa 80 mesh kusungunuka m'madzi kwa mphindi zitatu.

3. Ultrafine cellulose ether imamwaza mwachangu m'madzi, imasungunuka mwachangu ndikupanga kukhuthala kofulumira.Ma cellulose ether pamwamba pa 120 mesh amasungunuka m'madzi kwa masekondi 10-30.

The bwino mapadi etere particles, ndi bwino madzi posungira, coarse particles wa mapadi etere ndi madzi kukhudzana pamwamba yomweyo kusungunuka ndi kupanga gel osakaniza chodabwitsa.Guluuyo amakulunga zinthuzo kuti mamolekyu a madzi asapitirire kulowa.Nthawi zina, ngakhale analimbikitsa kwa nthawi yaitali, yankho sangathe wogawana omwazika ndi kusungunuka, kupanga matope flocculent njira kapena agglomerate.Fine particles kumwazikana ndi kupasuka yomweyo pamene kukhudzana ndi madzi kupanga yunifolomu mamasukidwe akayendedwe.

PH mtengo wa cellulose ether (kuchedwa kutsika kapena mphamvu zoyambirira)

Mtengo wa PH wa opanga ma cellulose ether kunyumba ndi kunja kwenikweni umayendetsedwa pafupifupi 7, yomwe ili acidic.Chifukwa pamakhala ma ring ring amtundu wa glucose omwe alibe madzi ambiri m'maselo a cellulose ether, mphete ya glucose yopanda madzi ndiye gulu lalikulu lomwe limayambitsa kuchedwa kwa simenti.Mphete ya shuga yopanda madzi imatha kupanga ayoni a calcium mu simenti ya hydration njira yopangira shuga wa calcium ma cell, kuchepetsa kuchuluka kwa ayoni wa calcium mu simenti ya simenti ya kupatsidwa ulemu, kuteteza mapangidwe ndi mpweya wa calcium hydroxide ndi makristasi amchere a calcium, motero kuchedwetsa njira ya simenti.Ngati mtengo wa PH ukhala wamchere, matope amawoneka ngati mphamvu yamphamvu.Tsopano ambiri a mafakitale kusintha PH mtengo ntchito sodium carbonate, sodium carbonate ndi mtundu wa mathamangitsidwe wothandizira, sodium carbonate akhoza kusintha ntchito ya simenti tinthu pamwamba, zikuchititsa mgwirizano pakati particles kuwonjezeka, kupititsa patsogolo kukhuthala kwa slurry, matope ndi sodium carbonate. ndi calcium ion pawiri mofulumira, chinachititsa mapangidwe ettringite, simenti condensation mwamsanga.Chifukwa chake, mtengo wa PH uyenera kusinthidwa malinga ndi makasitomala osiyanasiyana pakupanga kwenikweni.

Kulowetsa gasi wa cellulose ether

The mpweya entraining wa mapadi etere makamaka chifukwa mapadi etere ndi surfactant, mawonekedwe ntchito mapadi etero makamaka zimachitika mu mpweya-zamadzimadzi-olimba mawonekedwe, choyamba ndi kumayambiriro thovu, kenako kubalalitsidwa ndi kunyowetsa.Cellulose ether lili alkyl gulu, kwambiri kuchepetsa mavuto padziko ndi interfacial mphamvu ya madzi, madzi njira mu mukubwadamuka n'zosavuta kutulutsa thovu ambiri ang'onoang'ono chatsekedwa.

Kusintha kwa cellulose ether

Cellulose etha kusungunuka mu matope chifukwa cha maselo unyolo wa methoxy ndi hydroxypropyl gulu mu slurry ndi ayoni kashiamu ndi ayoni zotayidwa mu mapangidwe viscous gel osakaniza ndi wodzazidwa mu simenti matope kusiyana, kusintha kachulukidwe matope, amatenga mbali yosinthika kudzazidwa ndi. kulimbikitsa.Komabe, masanjidwewo akamakanizidwa, polima sangathe kusewera mokhazikika, kotero mphamvu ndi kupsinjika kwa chiŵerengero cha matope kumachepa.

Kupanga filimu ya cellulose ether

Filimu yopyapyala ya latex imapangidwa pakati pa cellulose ether ndi tinthu ta simenti pambuyo pa hydration.Mufilimuyi ali kusindikiza kwenikweni ndi bwino pamwamba youma chodabwitsa matope.Chifukwa cellulose ether ali ndi madzi posungira bwino, kukhalabe mamolekyu okwanira madzi mkati mwa matope, motero kuonetsetsa mphamvu ya simenti hydration ndi kuumitsa ndi chitukuko kwathunthu, kupititsa patsogolo kugwirizana mphamvu ya matope, pa nthawi yomweyo kusintha zomatira wa simenti. matope, matope amakhala ndi pulasitiki wabwino komanso wolimba, amachepetsa kupindika kwa matope.