Cellulose ether imakhala ndi mphamvu yochedwetsa pang'ono pa matope. Pamene mlingo wa cellulose ether ukuwonjezeka, nthawi yokhazikika ya matope imapitirira. Mphamvu yochedwetsa ya cellulose ether pa simenti phala imadalira kwambiri kuchuluka kwa gulu la alkyl, pomwe sizikugwirizana kwenikweni ndi kulemera kwake kwa mamolekyu.
Kuchuluka kwa alkyl substitution kukakhala kochepa, kuchuluka kwa hydroxyl kumakhala kwakukulu, ndipo mphamvu yochedwetsa imawonekera bwino. Ndipo kuchuluka kwa cellulose ether, mphamvu yochedwetsa ya filimu yovuta pa simenti yoyambirira imaonekera bwino, kotero mphamvu yochedwetsa imawonekeranso bwino.
Mphamvu ndi chimodzi mwa zizindikiro zofunika kwambiri zowunikira momwe zinthu zopangidwa ndi simenti zimakhalira pa chisakanizocho. Pamene mlingo wa etha ya cellulose ukuwonjezeka, mphamvu yokakamiza ndi mphamvu yosinthasintha ya matope idzachepa. Mphamvu yolumikizirana ya matope a simenti yosakanikirana ndi etha ya cellulose imakula; Mphamvu yosinthasintha ndi yokakamiza ya matope a simenti imachepa, ndipo mlingo ukakhala waukulu, mphamvu imachepa;
Pambuyo posakaniza hydroxypropyl methyl cellulose ether, ndi kuwonjezeka kwa mlingo, mphamvu yopindika ya simenti imawonjezeka koyamba kenako imachepa, ndipo mphamvu yopondereza imachepa pang'onopang'ono. Mlingo woyenera uyenera kulamulidwa pa 0.1%.
Cellulose ether imakhudza kwambiri momwe matope amagwirira ntchito. Cellulose ether imapanga filimu ya polima yokhala ndi mphamvu yotseka pakati pa tinthu ta simenti tomwe timathira madzi mu dongosolo la madzi, zomwe zimapangitsa kuti madzi ambiri mu filimu ya polima asakhale ndi madzi okwanira, zomwe zimapangitsa kuti simenti ikhale ndi madzi okwanira, motero imalimbitsa mphamvu ya phala ikauma.
Nthawi yomweyo, kuchuluka koyenera kwa cellulose ether kumawonjezera kusinthasintha ndi kusinthasintha kwa matope, kumachepetsa kulimba kwa malo osinthira pakati pa matope ndi mawonekedwe a substrate, komanso kumachepetsa kuthekera kotsetsereka pakati pa ma interface. Pamlingo winawake, mphamvu yolumikizirana pakati pa matope ndi substrate imakulitsidwa.
Kuphatikiza apo, chifukwa cha kukhalapo kwa cellulose ether mu simenti, malo apadera osinthira mawonekedwe ndi gawo la mawonekedwe zimapangidwa pakati pa tinthu ta matope ndi chinthu chosungunuka. Gawo la mawonekedweli limapangitsa kuti gawo la kusintha mawonekedwe likhale losinthasintha komanso losalimba. Chifukwa chake, zimapangitsa kuti matope akhale ndi mphamvu yolimba yolumikizirana.
Nthawi yotumizira: Juni-02-2023