Hydroxypropyl methylcelluloseỌ bụrụ na viscosity nke 100,000 zuru oke na ntụ ntụ putty, ebe mortar nwere ihe achọrọ dị elu karịa maka viscosity, yabụ a ga-ahọrọ viscosity nke 150,000 maka ojiji ka mma. Ọrụ kachasị mkpa nkehydroxypropyl methylcellulosebụ idobe mmiri, wee soro ya mee ka ọ dị arọ. Ya mere, na ntụ putty, ma ọ bụrụhaala na e nwetara idobe mmiri, a na-anabatakwa obere viscosity. N'ikwu ya n'ozuzu, ka viscosity dị elu, otú ahụ ka idobe mmiri ka mma, mana mgbe viscosity karịrị 100,000, mmetụta nke viscosity na idobe mmiri adịghị mkpa.
Hydroxypropyl methylcelluloseA na-ekewakarị ya n'ime ụdị ndị a dabere na viscosity:
1. Ọbara dị ala: 400 viscosity cellulose, nke a na-ejikarị eme ihe maka ngwa agha na-eme ka ọ dị larịị.
Ọ dị obere, ọ na-agbanwe agbanwe nke ọma, mgbe etinyere ya, ọ ga-achịkwa njide mmiri n'elu, mmiri anaghị apụta ìhè, mbelata dị obere, a na-ebelata mgbawa, ọ nwekwara ike iguzogide nsị, mee ka mmiri na-agbapụta nke ọma.
2. Ọbara dị ala karịa: 20,000-50,000 viscosity cellulose, nke a na-ejikarị eme ihe maka ngwaahịa gypsum na ihe ndị na-eme ka ihe dị n'ime ya dị ọcha.
Ọ dịghị viscosity dị ala, njigide mmiri, arụmọrụ owuwu dị mma, mbelata ntinye mmiri.
3. Ọbara dị n'etiti: 75,000-100,000 viscosity cellulose, nke a na-ejikarị eme ihe maka putty dị n'ime na n'èzí mgbidi.
Ọbara dị ala, ezigbo njigide mmiri, ezigbo owuwu na ihe ndị na-akwụgide ya
4. Oke viscosity: 150,000-200,000, nke a na-ejikarị eme ihe maka mkpuchi ihe polystyrene nke ihe mkpuchi ihe na-eme ka ihe dị nro na ihe mkpuchi ihe na-eme ka ihe dị nro. Oke viscosity, oke viscosity, oke viscosity, enweghị ike ịda, na-asọ, na imeziwanye ihe owuwu ahụ.
N'ozuzu, ka viscosity dị elu, otú ahụ ka nchekwa mmiri ka mma. Ya mere, ọtụtụ ndị ahịa ga-ahọrọ iji cellulose dị ọkara-viscosity (75,000-100,000) kama iji cellulose dị ọkara-ala-ala (20,000-50,000) iji belata ego agbakwunyere ma si otú a chịkwaa ọnụ ahịa.
Hydroxypropyl methylcellulose (HPMC)bụ polima semisynthetic nke a na-ejikarị eme ihe n'ọtụtụ ụlọ ọrụ, gụnyere owuwu, ọgwụ, na mmepụta nri. Ọdịdị nke HPMC bụ ihe dị mkpa nke na-ekpebi arụmọrụ ya n'ọtụtụ ngwa.
Ihe ndị dị ka ogo mgbanwe (DS), ibu molekul, na ntinye nke ngwọta HPMC na-emetụta oke viscosity nke HPMC. N'ozuzu, ka ogo mgbanwe na ibu molekul nke HPMC na-abawanye, otú ahụ ka viscosity ya na-abawanye.
A na-enweta HPMC n'ọtụtụ ọkwa viscosity, nke a na-atụkarị n'ihe gbasara "ibu molekul" ma ọ bụ "ọdịnaya methoxyl." Enwere ike ịgbanwe viscosity nke HPMC site na ịhọrọ ọkwa kwesịrị ekwesị ma ọ bụ site na ịgbanwe mkpokọta nke ngwọta HPMC.
N'ọrụ owuwu ụlọ, a na-ejikarị HPMC nwere oke viscosity dị elu eme ihe iji melite ike ọrụ na idobe mmiri nke ihe ndị e ji simenti mee. N'ọgwụ, viscosity bụ ihe dị mkpa n'ịchịkwa ọnụego mwepụta nke ihe ndị na-arụ ọrụ na usoro ọgwụ.
Ya mere, ịghọta viscosity nke hydroxypropyl methylcellulose dị oke mkpa maka ịhọrọ ọkwa kwesịrị ekwesị maka ngwa ụfọdụ yana ijide n'aka na njirimara arụmọrụ achọrọ.
Oge ozi: Mee-30-2024