Cellulose Ether- Makulidwe ndi Thixotropy
Cellulose etherimapanga matope onyezimira okhala ndi kukhuthala kwabwino kwambiri, komwe kumatha kukulitsa kumamatira pakati pa matope onyowa ndi wosanjikiza, kuwongolera magwiridwe antchito amatope, ndipo amagwiritsidwa ntchito kwambiri popaka matope, matope a ceramic omangira matope, ndi njira yotchinjiriza kunja kwa khoma. Kukhuthala kwa cellulose ether kumathanso kukulitsa luso lodana ndi kubalalitsidwa ndi kufanana kwa zida zatsopano, ndikuletsa kusanja kwazinthu, kulekana, ndi kutsika. Itha kugwiritsidwa ntchito ngati konkriti yolimba ya fiber, konkire ya pansi pamadzi, komanso konkriti yodzipangira yokha.
The thickening zotsatira zacellulose etherpazida zopangira simenti zimachokera ku viscosity ya cellulose ether solution. Pazikhalidwe zomwezo, ndipamwamba kukhuthala kwa mamasukidwecellulose ether, kumapangitsanso kukhuthala kwa zinthu zosinthidwa za simenti. Komabe, ngati mamasukidwe akayendedwe ndi apamwamba kwambiri, zingakhudze flowability ndi operability wa zinthu (monga pulasitala mipeni). Dongo lodziyimira pawokha, konkire yodzipangira yokha, ndi zina zambiri zimafunikira madzi ambiri, ndipo kukhuthala kwa cellulose ether ndikotsika kwambiri. Kuphatikiza apo, kukhuthala kwa cellulose ether kudzakulitsanso kufunikira kwa madzi a gawo lapansi la simenti ndikuwonjezera kupanga matope.
Njira yamadzimadzi ya high viscosity cellulose ether imakhala ndi thixotropy wapamwamba, womwenso ndi khalidwe la cellulose ether. The amadzimadzi njira ya methyl mapadi zambiri pseudoplastic ndi sanali thixotropic otaya katundu m'munsi kuposa ake gel osakaniza kutentha, koma amasonyeza Newtonian otaya pa otsika kukameta ubweya mlingo. Mosasamala kanthu za mtundu ndi mlingo wa kulowetsa m'malo, pseudoplasticity imawonjezeka ndi kuwonjezeka kwa kulemera kwa maselo kapena kuchuluka kwa cellulose ether. Choncho, malinga ngati ndende ndi kutentha kumakhalabe kosasintha, ma cellulose ethers omwe ali ndi kalasi yofanana ya viscosity (mosasamala kanthu za MC),Mtengo wa HPMC, Mtengo HEMC) nthawi zonse amawonetsa zinthu zofanana za rheological. Kutentha kumakwera, mawonekedwe a gel osakaniza ndi kutuluka kwapamwamba kwa thixotropic kumachitika.
Cellulose etheropanga akukuuzani kuti mapadi efa ndi mkulu ndende ndi otsika mamasukidwe akayendedwe ali ndi thixotropy ngakhale pansi kutentha gel osakaniza. Katunduyu ndiwopindulitsa kwambiri popanga matope kuti asinthe momwe angakulire komanso kugwa. Kuyenera kudziŵika kuti apamwamba mamasukidwe akayendedwe acellulose ether, ndi bwino kusunga madzi ake. Komabe, kukhuthala kwamphamvu kumapangitsa kuti maselo a cellulose ether achuluke kwambiri, komanso kuchepa kwake kwa kusungunuka kwake. Zili ndi zotsatira zoipa pa ndende ndi processability wa matope.
Cellulose Ether- Wachedwa
Cellulose etheramatha kutalikitsa nthawi yoyika simenti kapena matope, kuchedwetsa ma hydration kinetics a simenti, ndikusintha moyo wautumiki wa zida zatsopano, potero kumapangitsa kuti kugwa pakati pa matope ndi konkriti. Mlingo wa kutayika pakapita nthawi, koma zitha kuchedwetsanso ntchito yomanga.
Nthawi yotumiza: Aug-25-2023