Viscosity ndi kusungira madzi katundu wa cellulose ethers

Cellulose ether nthawi zambiri ndi chinthu chofunikira kwambiri mumatope osakanizika owuma. Chifukwa ndi chinthu chofunikira chosungira madzi chokhala ndi zinthu zabwino kwambiri zosungira madzi. Malo osungira madziwa amatha kuletsa madzi mumtondo wonyowa kuti asatuluke msanga kapena kutengeka ndi gawo lapansi, kutalikitsa nthawi yogwiritsira ntchito matope onyowa, kuonetsetsa kuti simentiyo ili ndi madzi okwanira, ndipo potero kuonetsetsa kuti makina amatopewo, ndizothandiza makamaka pomanga matope opyapyala (monga matope opaka pulasitala) ndi matope m'magawo omwe amayamwa kwambiri (monga midadada ya konkire ya aerated), kutentha kwambiri ndi mikhalidwe youma.

Katundu wosungira madzi wa cellulose umagwirizana kwambiri ndi kukhuthala kwake. Kuchuluka kwa kukhuthala kwa cellulose ether, kumapangitsa kuti madzi asungidwe bwino. Viscosity ndi gawo lofunikira la magwiridwe antchito a MC. Pakalipano, opanga MC osiyanasiyana amagwiritsa ntchito njira zosiyanasiyana ndi zida kuyesa kukhuthala kwa MC, ndipo njira zazikulu ndi Haake Rotovisko, Hoppler, Ubbelohde ndi Brookfield. Kwa chinthu chomwecho, zotsatira za viscosity zoyesedwa ndi njira zosiyanasiyana zimasiyana kwambiri, ndipo zina zimakhala zosiyana kwambiri. Chifukwa chake, poyerekeza ma viscosity, ndikofunikira kutero pakati pa njira zoyesera zomwezo, kuphatikiza kutentha, rotor, ndi zina.

Nthawi zambiri, kukwezeka kwa mamachulukidwe kumapangitsa kuti madzi asungidwe bwino. Komabe, kukwezeka kwa mamachulukidwe apamwamba, kumapangitsanso kulemera kwa mamolekyu a MC ndi kuchepa kofananira ndi kusungunuka kwake, komwe kumawononga mphamvu ndi ntchito yomanga ya matope. The apamwamba mamasukidwe akayendedwe, ndi zoonekeratu kwambiri thickening zotsatira pa matope. Kukwera kwa mamachulukidwe amphamvu, matope amadzimadzi amakhala omata kwambiri, pomanga, monga momwe zimasonyezedwera ndi chopukutira chomata komanso kumamatira kwakukulu ku gawo lapansi. Komabe, sizimathandiza kwambiri kuwonjezera mphamvu zamapangidwe a matope okhawo. Pamene zonsezi zimamanga, zimasonyeza kuti ntchito yotsutsa-sagging sizowonekera. M'malo mwake, ma viscosity ena otsika mpaka apakatikati koma osinthidwa a methyl cellulose ether ali ndi ntchito yabwino kwambiri pakuwongolera mphamvu zamapangidwe amatope onyowa.