Mumatope, cellulose ether imagwira ntchito yosunga madzi, kukhuthala, kuchedwetsa mphamvu ya simenti ya simenti, ndikuwongolera ntchito yomanga. Kusunga madzi abwino kumapangitsa kuti simenti ikhale yokwanira, imatha kusintha kukhuthala konyowa kwamatope, kuonjezera mphamvu yomangirira yamatope, ndikusintha nthawi. Kuonjezera cellulose ether ku makina kupopera matope matope akhoza kupititsa patsogolo kupopera kapena kupopera ntchito ndi structural mphamvu ya matope. Ma cellulose amagwiritsidwa ntchito kwambiri ngati chowonjezera chofunikira mumatope osakaniza okonzeka. Kutengera gawo la zida zomangira mwachitsanzo, cellulose ether ili ndi zinthu zabwino kwambiri monga kukhuthala, kusunga madzi, ndi kuchedwa. Choncho, zomangira kalasi mapadi ether chimagwiritsidwa ntchito bwino kupanga matope okonzeka-osakaniza (kuphatikizapo chonyowa wothira matope ndi youma wothira matope), PVC utomoni, etc. , lalabala utoto, putty, etc., kuphatikizapo ntchito ya zomangira zakuthupi.
Ma cellulose amatha kuchedwetsa hydration ya simenti. Ma cellulose ether amawonjezera matope okhala ndi zinthu zosiyanasiyana zopindulitsa, komanso amachepetsa kutentha koyambirira kwa simenti ndikuchedwetsa hydration dynamic process ya simenti. Izi sizothandiza kugwiritsa ntchito matope m'madera ozizira. Kuchedwetsaku kumachitika chifukwa cha kutengeka kwa ma cellulose ether mamolekyu pa zinthu za hydration monga CSH ndi ca(OH)2. Chifukwa cha kuchuluka kwa mamasukidwe akayendedwe a pore yankho, mapadi ether amachepetsa kuyenda kwa ayoni mu yankho, potero kuchedwa hydration ndondomeko. Kuchulukirachulukira kwa cellulose ether mu mineral gel zakuthupi, m'pamenenso zimawonekera kwambiri kuchedwa kwa hydration. Cellulose ether sikungochedwetsa kukhazikitsa, komanso kuchedwetsa kuuma kwa dongosolo la matope a simenti. The retarding zotsatira za cellulose ether zimadalira ndende yake mu mchere gel osakaniza dongosolo, komanso dongosolo mankhwala. Kukwera kwa methylation ya HEMC, kumapangitsanso kuchepa kwa cellulose ether. Chiŵerengero cha m'malo mwa hydrophilic m'malo mwa madzi ochulukirapo. Komabe, kukhuthala kwa cellulose ether sikukhudza kwenikweni ma kinetics a simenti.
Ndi kuwonjezeka kwa zomwe zili mu hydroxypropyl methylcellulose ether, nthawi yoyika matope inakula kwambiri. Pali mgwirizano wabwino wopanda mzere pakati pa nthawi yoyambira yoyika matope ndi zomwe zili mu cellulose ether, komanso kulumikizana kwabwino kwa mzere pakati pa nthawi yomaliza yokhazikitsa ndi zomwe zili mu cellulose ether. Titha kuwongolera nthawi yogwiritsira ntchito matope posintha kuchuluka kwa cellulose ether.
Nthawi yotumiza: Mar-09-2023