Focus on Cellulose ethers

Chifukwa chiyani kuchuluka kwa matope kumawonjezeka mukawonjezera cellulose ether?

1. Chiyambi cha cellulose ether:

Kapangidwe ka Mankhwala: Ma cellulose ethers ndi ma polima osungunuka m'madzi opangidwa kuchokera ku cellulose, polysaccharide yachilengedwe yomwe imapezeka m'makoma a cellulose. Amakhala ndi mayunitsi obwerezabwereza a glucose olumikizidwa ndi ma β-1,4-glycosidic bond.

Hydrophilicity: Cellulose ether ndi hydrophilic, kutanthauza kuti ili ndi mgwirizano wamphamvu wamadzi.

2. Ntchito ya cellulose ether mumatope:

Kusunga madzi: Imodzi mwa ntchito zazikulu za cellulose ether mumatope ndikuwonjezera kusungidwa kwa madzi. Zimapanga filimu yopyapyala kuzungulira tinthu ta simenti, kuchepetsa kutuluka kwa madzi ndikuwonetsetsa kuti hydration yayitali.

Limbikitsani kugwirira ntchito: Cellulose ether imagwira ntchito ngati rheology modifier kuti matope azigwira ntchito bwino. Izi ndizofunikira makamaka pa ntchito monga kupaka pulasitala ndi kupereka.

3. Mphamvu pa voliyumu yamatope:

Mayamwidwe a Madzi: Mapangidwe a hydrophilic a cellulose ethers amawapangitsa kuti amwe madzi kuchokera kusakaniza. Pamene ikukula, kuchuluka kwa madzi mumatope kumawonjezeka, zomwe zimapangitsa kuti voliyumu ichuluke.

Kulowetsa mpweya: Kuonjezera ma cellulose ethers kungayambitse mpweya mumatope. Mpweya wotsekeka wotsekemera umathandizira kuchulukitsa kwamphamvu.

Kapangidwe ka pore: Ma cellulose ether amatha kukhudza mawonekedwe a matope, kupanga maukonde ochulukirapo. Kusintha kumeneku kwa mapangidwe a pore kumabweretsa kuwonjezeka kwakukulu kwa voliyumu.

4. Njira ya Hydration ndi kukula kwa voliyumu:

Kuchedwetsa hydration: Ma cellulose ether amatha kuchedwetsa hydration ya simenti. Kuchedwetsako kwa hydration kumapangitsa kuti madzi azitha kugawa kwambiri mumtondo, zomwe zingapangitse kuchuluka kwa voliyumu.

Kuchiritsa: Kusungidwa kwamadzi kotalikirako komwe kumalimbikitsidwa ndi ma cellulose ethers kumathandizira kukulitsa nthawi yochiritsa, kulola kuti tinthu tating'ono ta simenti tizikhala ndi madzi okwanira komanso kukhudza voliyumu yomaliza ya matope.

5. Kuyanjana ndi zosakaniza zina:

Kulumikizana kwa Binder: Ma cellulose ether amalumikizana ndi zomangira simenti kuti apange matrix okhazikika. Kuyanjana kumeneku kumakhudza kugwirizanitsa kwa tinthu tating'onoting'ono ndipo kumabweretsa kuwonjezeka kwa voliyumu.

Admixture synergy: Ngati ma cellulose ethers agwiritsidwa ntchito limodzi ndi zosakaniza zina, synergistic zotsatira zitha kuchitika, zomwe zimakhudza kuchuluka kwa matope.

6. Kubalalika ndi kugawa kwa tinthu:

Kubalalika yunifolomu: Pamene cellulose ether imamwazika bwino mumatope, imatha kupanga kugawa kwa tinthu kofananira. Kufanana kumeneku kumakhudza kachulukidwe kakunyamula ndipo motero kuchuluka kwa matope.

7. Mikhalidwe ya chilengedwe:

Kutentha ndi Chinyezi: Mikhalidwe ya chilengedwe monga kutentha ndi chinyezi zingasokoneze khalidwe la cellulose ethers mumatope. Kutupa ndi kuyamwa kwamadzi kumatha kukhala kosiyana malinga ndi chilengedwe, kukhudza kuchuluka kwake.

8. Mapeto:

Mwachidule, kuwonjezeka kwa voliyumu komwe kumawonedwa pakuwonjezeredwa kwa ma cellulose ethers ku matope ndi chifukwa cha kuyanjana kovutirapo kuphatikiza kutengera madzi, kuchedwetsa hydration, kulowetsedwa kwa mpweya, ndi kusintha kwa matope a microstructure. Kumvetsetsa njirazi ndikofunikira kuti muwonjezere kugwiritsa ntchito ma cellulose ethers muzosakaniza zamatope ndikukwaniritsa zomwe mukufuna pakumanga.


Nthawi yotumiza: Dec-01-2023
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