Viscosity ndi gawo lofunikira la cellulose ether.Nthawi zambiri, kukhathamira kwamphamvu kumapangitsa kuti matope a gypsum asunge madzi.Komabe, kukhuthala kwake kukakhala kokwezeka, kumapangitsanso kulemera kwa maselo a cellulose ether, ndipo kusungunuka kwa cellulose ether kumachepa moyenerera.Kuchuluka kwa mamasukidwe akayendedwe ndi, m'pamenenso zoonekeratu thickening zotsatira ndi, koma si molingana.Kukwera kwa mamasukidwe amphamvu, matope amadzimadzi amakhala olimba kwambiri, pomangapo, ntchito yomata scraper ndi kumamatira kwambiri ku gawo lapansi.Koma sizothandiza kuwonjezera mphamvu zamapangidwe a matope okha.Kuonjezera apo, pakumanga, ntchito ya matope otsekemera otsutsa-sagging sikuwonekera.Mosiyana ndi izi, ena osinthidwa a Methyl cellulose okhala ndi mawonekedwe otsika mpaka apakatikati adawonetsa kusintha kwamphamvu kwamapangidwe amatope onyowa.Zomangamanga khoma ndi zambiri porous nyumba, iwo mayamwidwe madzi.Ndipo zida zomangira za gypsum zomwe zimagwiritsidwa ntchito pomanga khoma, mutawonjezera kusinthasintha kwamadzi pakhoma, chinyezi chimakhala chosavuta kutengera khoma, zomwe zimapangitsa kuti gypsum isakhale ndi chinyezi chofunikira kuti hydration, kubweretsa zovuta pakumanga pulasitala ndikuchepetsa mphamvu yomangira. , motero pali ming'alu, ng'oma yopanda kanthu, spalling ndi zovuta zina.Kupititsa patsogolo kusungirako madzi kwa zida zomangira gypsum kumatha kuthetsa vuto la zomangamanga ndikuwongolera mphamvu yolumikizira khoma.Chifukwa chake, wosungira madzi wakhala chimodzi mwazinthu zofunika kwambiri zomangira gypsum.
Pofuna kupititsa patsogolo ntchito yomanga, zipangizo zomangira ufa monga pulasitala, zomatira, pulasitala, pulasitala ndi pulasitala putty amagwiritsidwa ntchito, ndipo gypsum retarder amawonjezedwa pakupanga kuti atalikitse nthawi yomanga pulasitala, chifukwa hydration ndondomeko hemihydrate. gypsum imaletsedwa ndikuwonjezera retarder ku gypsum, mtundu uwu wa gypsum phala uyenera kukhalabe pakhoma kwa maola 1-2 usanakhazikitsidwe, ndipo makoma ambiri amakhala ndi mayamwidwe amadzi, makamaka zida zatsopano zopepuka zopepuka monga makoma a njerwa, makoma aerated konkire, perforated matenthedwe kutchinjiriza mapanelo, kuti achite madzi kusunga mankhwala a gypsum slurry, kupewa kulanda ena slurry madzi khoma, amachititsa gypsum phala kuumitsa pamene kusowa kwa madzi, ndi hydration si wathunthu. , imayambitsa gypsum ndi khoma pamwamba pa malo olowa kulekana, chipolopolo.Kuonjezera chosungira madzi ndi kusunga chinyezi chomwe chili mu gypsum phala, kuonetsetsa kuti hydration reaction ya gypsum paste pa mawonekedwe, motero kuonetsetsa mphamvu ya mgwirizano.Zomwe zimagwiritsidwa ntchito posungira madzi ndi ma cellulose ethers, monga Methyl cellulose (MC), hypromellose (Mtengo wa HPMChydroxyethyl methyl cellulose (Mtengo HEMC), ndi zina.Kuphatikiza apo, mowa wa polyvinyl, sodium alginate, wowuma wosinthidwa, diatomite ndi ufa wosowa wapadziko lapansi ungagwiritsidwenso ntchito kukonza kusunga madzi.
Nthawi yotumiza: Jul-26-2023