Hydroxypropyl methylcellulosena viscosity nke 100,000 bụ n'ozuzu zuru ezu na putty ntụ ntụ, mgbe ngwa agha nwere ihe dịtụ elu chọrọ maka viscosity, n'ihi ya, a viscosity nke 150,000 kwesịrị ịhọrọ maka mma ojiji. Ọrụ kachasị mkpa nkehydroxypropyl methylcellulosebụ njide mmiri, na-esote thickening. Ya mere, na putty ntụ ntụ, ọ bụrụhaala na a na-enweta njide mmiri, a na-anabatakwa viscosity dị ala. N'ikwu okwu n'ozuzu, ka viscosity dị elu, ka mma na-ejide mmiri, ma mgbe viscosity karịrị 100,000, mmetụta nke viscosity na njide mmiri adịghị mkpa.
Hydroxypropyl methylcellulosea na-ekewakarị na ngalaba ndị a dịka viscosity siri dị:
1. obere viscosity: 400 viscosity cellulose, tumadi eji maka onwe-leveling ngwa agha.
Viscosity dị ala, ezigbo mmiri mmiri, mgbe ọ gbakwụnyere, ọ ga-achịkwa njigide mmiri dị n'elu, mmiri na-ahụ maka mmiri adịghị anya, nkwụsịtụ dị ntakịrị, nkwụsịtụ na-ebelata, ọ pụkwara iguzogide sedimentation, welie mmiri na mgbapụta.
2. Ọkara ala viscosity: 20,000-50,000 viscosity cellulose, tumadi eji gypsum ngwaahịa na caulking agents.
Obere viscosity, njide mmiri, arụ ọrụ ụlọ dị mma, obere mgbakwunye mmiri.
3. Ọkara viscosity: 75,000-100,000 viscosity cellulose, tumadi eji maka ime na mputa mgbidi putty.
Viscosity na-agafeghị oke, njide mmiri dị mma, ihe owuwu dị mma na ihe nkwudo
4. High viscosity: 150,000-200,000, tumadi eji polystyrene urughuru mkpuchi ngwa agha gluu ntụ ntụ na vitrified micro-bead mkpuchi ngwa agha. Nnukwu viscosity, nnukwu njigide mmiri, ngwa agha adịghị mfe ịdapụ, na-asọba, meziwanye ihe owuwu ahụ.
N'ikwu okwu n'ozuzu, ka viscosity dị elu, ka mma na-ejigide mmiri. Ya mere, ọtụtụ ndị ahịa ga-ahọrọ iji cellulose ọkara-viscosity (75,000-100,000) kama obere obere viscosity cellulose (20,000-50,000) iji belata ego agbakwunyere ma si otú ahụ na-achịkwa ụgwọ.
Hydroxypropyl methylcellulose (HPMC)bụ polymer semisynthetic nke a na-ejikarị na ụlọ ọrụ dị iche iche, gụnyere ihe owuwu, ọgwụ na mmepụta nri. Viscosity nke HPMC bụ ihe dị mkpa nke na-ekpebi arụmọrụ ya na ngwa dị iche iche.
A na-emetụta viscosity nke HPMC site na ihe ndị dị ka ogo ngbanwe (DS), ịdị arọ molecular, na itinye uche nke ngwọta HPMC. N'ozuzu, ka ogo nke nnọchi na ịdị arọ molekụla nke HPMC na-abawanye, otu ahụ ka viscosity ya na-abawanye.
HPMC dị na ọkwa viscosity dị iche iche, nke a na-atụkarị n'ihe gbasara "ịdị arọ nke molecular" ma ọ bụ "ọdịnaya methoxyl." Enwere ike gbanwee viscosity nke HPMC site na ịhọrọ ọkwa kwesịrị ekwesị ma ọ bụ site n'ịgbanwe ntinye nke ngwọta HPMC.
N'ime ngwa ihe owuwu, a na-ejikarị HPMC nwere viscosity dị elu iji meziwanye ọrụ na njigide mmiri nke ihe ndị dabeere na ciment. Na ọgwụ, viscosity bụ ihe dị mkpa na-achịkwa ntọhapụ nke ihe na-arụ ọrụ na-emepụta ọgwụ.
Ya mere, ịghọta viscosity nke hydroxypropyl methylcellulose dị oké mkpa maka ịhọrọ ọkwa ziri ezi maka ngwa ngwa yana hụ na njirimara arụmọrụ achọrọ.
Oge nzipu: Mee-30-2024