Li-cellulose ethers ke eng

Li-cellulose ethers ke lelapa la metsoako ea lik'hemik'hale e nkiloeng ho cellulose, polymer ea tlhaho e fumanehang maboteng a lisele tsa limela. Li-derivatives tsena li entsoe ka phetoho ea lik'hemik'hale ea limolek'hule tsa cellulose ho hlahisa lihlopha tse fapaneng tse sebetsang, tse hlahisang mefuta e mengata ea thepa le lisebelisoa. Li-cellulose ethers li sebelisoa hangata liindastering tse kang tsa kaho, meriana, lijo, litlolo, le tlhokomelo ea botho ka lebaka la tlhaho ea tsona e fapaneng le thepa e molemo. Mona ke mefuta e meng e tloaelehileng ea li-cellulose ethers le ts'ebeliso ea tsona:

1. Methyl Cellulose (MC):
   • Methyl cellulose e hlahisoa ka ho phekola selulose ka methyl chloride.
   • E qhibiliha ka metsing 'me e etsa litharollo tse hlakileng, tse hlakileng.
   • MC e sebelisoa e le sekontiri, se tlamang, le se tsitsitseng linthong tsa kaho (mohlala, lirekere tse thehiloeng ho samente, li-plaster tse entsoeng ka gypsum), lihlahisoa tsa lijo, meriana, le lintho tsa tlhokomelo ea botho.
2. Hydroxyethyl Cellulose (HEC):
   • Hydroxyethyl cellulose e entsoe ka ho arabela selulose ka ethylene oxide ho hlahisa lihlopha tsa hydroxyethyl.
   • E qhibiliha ka metsing 'me e etsa litharollo tse hlakileng, tse hlakileng tse nang le thepa e ntle ea ho boloka metsi.
   • HEC e atisa ho sebelisoa e le motenya, mofetoleli oa rheology, le moemeli oa ho etsa lifilimi ka lipente, li-adhesive, lihlahisoa tsa tlhokomelo ea botho, le meriana.
3. Hydroxypropyl Methyl Cellulose (HPMC):
   • Hydroxypropyl methyl cellulose e hlahisoa ka ho hlahisa hydroxypropyl le lihlopha tsa methyl mokokotlong oa cellulose.
   • E bonts'a thepa e ts'oanang le methyl cellulose le hydroxyethyl cellulose, ho kenyelletsa le ho qhibiliha ha metsi, bokhoni ba ho etsa lifilimi, le ho boloka metsi.
   • HPMC e sebelisoa haholo linthong tsa kaho (mohlala, likhomaretsi tsa lithaele, li-renders tse thehiloeng ho samente, metsoako ea ho ikemela), hammoho le meriana, lihlahisoa tsa lijo, le lintho tsa tlhokomelo ea motho.
4. Carboxymethyl Cellulose (CMC):
   • Carboxymethyl cellulose e tsoa ho selulose ka ho e phekola ka sodium hydroxide le monochloroacetic acid ho hlahisa lihlopha tsa carboxymethyl.
   • E qhibiliha ka metsing 'me e etsa litharollo tse hlakileng, tse nang le li-viscous tse nang le thepa e ntle haholo ea ho tiisa, ho tsitsisa le ho boloka metsi.
   • CMC e atisa ho sebelisoa e le motenya, binder, le rheology modifier lihlahisoa tsa lijo, meriana, masela, pampiri, le lisebelisoa tse ling tsa kaho.

Tsena ke tse ling tsa li-cellulose ethers tse sebelisoang hangata, e 'ngoe le e' ngoe e na le thepa e ikhethang le ts'ebeliso ho liindasteri tse fapaneng. Li-ether tse ling tse khethehileng tsa cellulose le tsona li ka ba teng, tse etselitsoeng litlhoko tse ikhethileng lits'ebetsong tse fapaneng.