Mmiri agwakọta ngwa agha: ngwakọta ngwa agha bụ ụdị simenti, ezi mkpokọta, admixture na mmiri, na dị ka Njirimara nke dị iche iche mmiri, dị ka a ụfọdụ ruru, mgbe e tụrụ na Ịgwakọta ọdụ, weere, ebuga na ebe ebe a na-eji gwongworo, wee banye n'ime ụlọ ahịa pụrụ iche nke akpa ahụ wee jiri ngwakọta mmiri emechara maka oge akọwapụtara.
A na-eji Hydroxypropyl methylcellulose mee ihe dị ka ihe na-ejigide mmiri maka ụrọ simenti na retarder maka ịgbapụta ngwa agha. N'ihe banyere gypsum dị ka ihe nkedo iji meziwanye ngwa na ịgbatị oge ọrụ, njigide mmiri nke HPMC na-egbochi slurry ngwa ngwa ngwa ngwa mgbe ihichachara, ma na-eme ka ike dịkwuo ike mgbe ọ gbasasịrị. Njide mmiri bụ ihe dị mkpa nke hydroxypropyl methylcellulose HPMC, ma ọ bụkwa ihe na-eche banyere ọtụtụ ndị na-emepụta ngwa agha mmiri-agwakọta mmiri. Ihe ndị na-emetụta mmetụta njide mmiri nke mmiri mmiri gwakọtara ọnụ gụnyere ọnụọgụ HPMC agbakwunyere, viscosity nke HPMC, ịdị mma nke ihe ndị ahụ na okpomọkụ nke gburugburu ebe obibi.
E nwere atọ isi ọrụ nke hydroxypropyl methylcellulose HPMC na mmiri-mix ngwa agha, otu bụ magburu onwe mmiri na-ejide ikike, nke ọzọ bụ mmetụta na agbanwe agbanwe na thixotropy nke mmiri-mix ngwa agha, na nke atọ bụ mmekọrịta na ciment . Njide mmiri nke cellulose ether na-adabere na ọnụego mmịpụta mmiri nke isi, ihe mejupụtara nke ngwa agha ahụ, ọkpụrụkpụ nke akwa akwa akwa, mmiri chọrọ ngwa ngwa, na oge nhazi. Ka nghọta dị elu nke hydroxypropyl methylcellulose dị elu, ka mma na-ejigide mmiri.
Ihe ndị na-emetụta njide mmiri nke ngwa ngwa agwakọta mmiri gụnyere cellulose ether viscosity, ego mgbakwunye, nha nha na okpomọkụ. Ka viscosity nke cellulose ether dị ukwuu, otú ahụ ka njigide mmiri dị mma. Viscosity bụ oke dị mkpa nke arụmọrụ HPMC. Maka otu ngwaahịa ahụ, nsonaazụ nke iji ụzọ dị iche iche iji tụọ viscosity dịgasị iche iche, ụfọdụ na-enwekwa oghere abụọ. Ya mere, ntụnyere nke viscosity ga-emerịrị n'otu usoro ule, gụnyere okpomọkụ, spindle, wdg.
N'ikwu okwu n'ozuzu, ka viscosity dị elu, ka mma na-ejigide mmiri. Otú ọ dị, ka viscosity dị elu, ịdị arọ nke HPMC dị elu ma na-ebelata solubility nke HPMC, nke nwere mmetụta na-adịghị mma na ike na ịrụ ọrụ nke ngwa agha. Nke dị elu nke viscosity, otú ahụ ka ọ na-apụta ìhè karịa mmetụta nke ngwa agha ahụ, ma ọ dịghị ihe jikọrọ ya na ya. Nke dị elu nke viscosity, ka viscous nke mmiri mmiri na-eme ka ọ dịkwuo mma, na-arụ ọrụ nke ọma na-arụ ọrụ nke ọma, ịrụ ọrụ nke scraper viscous na nke dị elu na-ejikọta ya na mkpụrụ. Otú ọ dị, ụbara ike nhazi nke ngwa agha mmiri n'onwe ya adịghị enyere aka. Ihe owuwu abụọ ahụ enweghị ọrụ mgbochi sag doro anya. N'ụzọ dị iche, ụfọdụ viscosity dị obere na obere ma gbanwee hydroxypropyl methylcellulose nwere ọmarịcha arụmọrụ n'ịkwalite ike nhazi nke ngwa agha mmiri.
Ọnụ ọgụgụ dị ukwuu nke cellulose ether agbakwunyere na mmiri mmiri mmiri PMC, otú ahụ ka njide mmiri dị mma, na elu viscosity, ka mma na-ejigide mmiri. Ịdị mma bụkwa ihe ngosi arụmọrụ dị mkpa nke hydroxypropyl methylcellulose.
Ịdị mma nke hydroxypropyl methylcellulose nwekwara mmetụta ụfọdụ na njide mmiri ya. N'ozuzu, maka hydroxypropyl methylcellulose nwere otu viscosity na ịdị mma dị iche iche, nke dị ntakịrị, obere mmetụta nke njide mmiri n'okpuru otu ego mgbakwunye. nke ka mma.
Na mmiri-agwakọta ngwa agha, na mgbakwunye na ego nke cellulose ether HPMC dị nnọọ ala, ma ọ nwere ike budata mma ewu arụmọrụ nke mmiri ngwa agha, na ọ bụ isi ihe mgbakwunye na tumadi na-emetụta arụmọrụ nke ngwa agha. Nhọrọ ezi uche dị na ya nke hydroxypropyl methylcellulose, arụmọrụ nke ngwa agha mmiri na-emetụta nke ukwuu.
Oge nzipu: Eprel-25-2023