Hydroxypropyl methylcelluloseka viscosity ea 100,000 ka kakaretso e lekane ka putty powder, ha seretse se na le tlhokahalo e batlang e phahame bakeng sa viscosity, kahoo viscosity ea 150,000 e lokela ho khethoa bakeng sa tšebeliso e molemo. Mosebetsi oa bohlokoa ka ho fetisisa oahydroxypropyl methylcelluloseho bolokoa ha metsi, ebe ho lateloa ke ho teteana. Ka hona, ka phofo ea putty, hafeela ho boloka metsi ho finyelloa, viscosity e tlaase e boetse e amoheleha. Ka kakaretso, ha viscosity e phahame, ho boloka metsi ho molemo, empa ha viscosity e feta 100,000, phello ea viscosity ho boloka metsi ha e bohlokoa.
Hydroxypropyl methylcelluloseka kakaretso e arotsoe ka lihlopha tse latelang ho ea ka viscosity:
1. Viscosity e tlaase: 400 viscosity cellulose, haholo-holo e sebelisetsoang seretse sa ho ikemela.
Viscosity e tlaase, metsi a matle, ka mor'a ho e eketsa e tla laola ho bolokoa ha metsi ka holim'a metsi, ho phalla ha metsi ha ho totobetse, ho fokotseha ho nyane, ho phunyeha ho fokotsehile, hape ho ka hanela sedimentation, ho matlafatsa metsi le ho pompa.
2. Viscosity e tlaase-tlaase: 20,000-50,000 viscosity cellulose, haholo-holo e sebelisetsoang lihlahisoa tsa gypsum le li-caulking agents.
Viscosity e tlase, ho boloka metsi, ts'ebetso e ntle ea kaho, tlatsetso e nyane ea metsi.
3. Viscosity e bohareng: 75,000-100,000 viscosity cellulose, haholo-holo e sebelisetsoang putty ea ka hare le ka ntle ea lerako.
Viscosity e itekanetseng, ho boloka metsi hantle, mohaho o motle le thepa e leketlileng
4. Viscosity e phahameng: 150,000-200,000, haholo-holo e sebelisetsoang polystyrene particle insulation mortar glue powder le vitrified micro-bead insulation seretse. Viscosity e phahameng, ho boloka metsi a mangata, seretse ha se bonolo ho oela, ho phalla, ho ntlafatsa mohaho.
Ha re bua ka kakaretso, ha viscosity e phahame, ho boloka metsi ho molemo. Ka hona, bareki ba bangata ba tla khetha ho sebelisa selulose e bohareng ba viscosity (75,000-100,000) ho e-na le selulose e tlaase ea viscosity (20,000-50,000) ho fokotsa chelete e kenyelletsoeng mme kahoo ho laola litšenyehelo.
Hydroxypropyl methylcellulose (HPMC)ke polymer ea semisynthetic e sebelisoang hangata liindastering tse fapaneng, ho kenyeletsoa kaho, meriana le tlhahiso ea lijo. Viscosity ea HPMC ke thepa ea bohlokoa e khethollang ts'ebetso ea eona lits'ebetsong tse fapaneng.
The viscosity ea HPMC e susumetsoa ke lintlha tse kang degree of substitution (DS), boima ba molek'hule, le mahloriso a tharollo ea HPMC. Ka kakaretso, ha tekanyo ea ho fetola le boima ba limolek'hule ea HPMC e eketseha, ho joalo le ka viscosity ea eona.
HPMC e fumaneha ka mefuta e fapaneng ea limaraka tsa viscosity, eo hangata e lekantsoeng ho latela "boima ba eona ba molek'hule" kapa "methoxyl content." Viscosity ea HPMC e ka fetoloa ka ho khetha kereiti e nepahetseng kapa ka ho lokisa mohopolo oa tharollo ea HPMC.
Lits'ebetsong tsa kaho, HPMC e nang le viscosity e phahameng hangata e sebelisoa ho ntlafatsa ts'ebetso le ho boloka metsi a thepa e thehiloeng ho samente. Litlhare tsa meriana, viscosity ke ntlha ea bohlokoa ho laola sekhahla sa ho lokolloa ha metsoako e sebetsang mekhoeng ea lithethefatsi.
Ka hona, ho utloisisa viscosity ea hydroxypropyl methylcellulose ho bohlokoa bakeng sa ho khetha kereiti e nepahetseng bakeng sa lits'ebetso tse ikhethileng le ho netefatsa litšobotsi tsa ts'ebetso tse lakatsehang.
Nako ea poso: May-30-2024