Hydroxypropyl methylcellulose (HPMC) mumatope osakaniza onyowa

Udindo waHPMC mumatope osakanikirana ndi madzi

Mtondo wosakanizidwa ndi madzi ndi simenti, zophatikizika bwino, zophatikizika, madzi ndi zinthu zosiyanasiyana zomwe zimatsimikiziridwa malinga ndi magwiridwe antchito. Malingana ndi gawo lina, atatha kuyeza ndi kusakaniza mu malo osakaniza, amatumizidwa kumalo ogwiritsidwa ntchito ndi galimoto yosakaniza, ndikuyika mu wapadera Kusakaniza konyowa kumasungidwa mu chidebe ndikugwiritsidwa ntchito mkati mwa nthawi yotchulidwa.

Hydroxypropyl methylcellulose imagwiritsidwa ntchito ngati choteteza ku slurry ya simenti komanso ngati retarder kuti slurry ikhale yopopa. Hydroxypropyl-Methyl Cellulose HPMC Cellulose Mphamvu yonyowa ngati yankho la viscous imawonjezera mphamvu ya dab ndikuwonjezera nthawi yogwira ntchito. Izi zimapangitsa kuti sesame isaphwanyike mwachangu mukatha kuthira mafuta ndikuwonjezera mphamvu mukaumitsa. . Hydrochloric acid ndi ntchito yofunika ya HPMC kuti hydrolyze mapadi, ndipo ndi wopanga zamkati zambiri China. Zinthu zomwe zimakhudza slurry yonyowa ndi monga kuchuluka kwa HPMC, kukhuthala kwa HPMC, kukongola kwa tinthu ndi kutentha kozungulira.

Udindo wofunikira wa HPMC pakusakaniza konyowa umawonekera makamaka m'magawo atatu: imodzi ndi mphamvu yosungira madzi bwino, ina ndi chikoka pa kusasinthasintha ndi kusinthika kwamaganizo kwa kusakaniza konyowa, ndipo inayo ndi kugwirizana ndi simenti. Kuchuluka kwa cellulose ether kumatengera kutengedwa kwa madzi ndi gawo lapansi, kapangidwe ka mchenga, makulidwe a wosanjikiza, kufunikira kwa madzi mu njira, komanso nthawi yokhazikika ya zinthuzo.

Zomwe zimasunga chinyezi zomwe zimakhudza cellulose ya hydrolyzed zimaphatikizira kukhuthala kwa zamkati, kuchuluka kowonjezera, kununkhira kwa tinthu ndi kutentha. Kuchuluka kwa cellulose ether, kumapangitsa kuti madzi asamve bwino. Viscosity ndi gawo lofunikira la magwiridwe antchito a HPMC. Kwa mankhwala omwewo, zotsatira za viscosity zoyezedwa ndi njira zosiyanasiyana zimasiyana kwambiri, ndipo zina zimafika mpaka kukula kwa geometric. Chifukwa chake, kufananiza ma viscosities, ziyenera kuchitika pakati pa njira zoyesera zomwezo, kuphatikiza kutentha, spindle, etc.

Nthawi zambiri, kukhuthala kwamphamvu kumapangitsa kuti madzi asalowe. Koma kukula kwakukulu kwa viscosity, HPMC, kulemera kwa maselo, kutsika kwa solubility katundu, yankho liri lamphamvu, ndipo katundu amakhudzidwa molakwika. The apamwamba mamasukidwe akayendedwe, ndi bwino thickening zotsatira mu njira, koma osati mwachindunji mogwirizana ndi chiŵerengero. Kuchuluka kwa viscosity, njira yonyowa komanso yowoneka bwino kwambiri, pomanga, imasonyeza kukana kwakukulu pamaso pa masamba ndi zipangizo zomata. Koma kuwonjezera mphamvu zamapangidwe ku dothi lonyowa sikungathandize. Nyumba ziwirizi zitamangidwa, zidapezeka kuti ntchito yolimbana ndi udzudzu idasowa. Mosiyana, ena otsika mamasukidwe akayendedwe post-modified methacrylic asidi, pamene mapadi bwino chonyowa njira ndi mphamvu structural, ali ndi katundu kwambiri.