Phapang ea thepa ea 'mele le ea lik'hemik'hale le ts'ebeliso ea HPMC le HEMC indastering ea kaho

Phapang ea thepa ea 'mele le ea lik'hemik'hale le ts'ebeliso ea HPMC le HEMC indastering ea kaho

Hydroxypropyl Methylcellulose (HPMC) le Hydroxyethyl Methylcellulose (HEMC) ke mefuta e 'meli ea li-cellulose ethers tse sebelisoang hangata indastering ea kaho. Le hoja ba arolelana lintho tse ling tse tšoanang, ho boetse ho na le liphapang tse ka sehloohong tsa thepa ea bona ea 'mele le ea lik'hemik'hale, hammoho le ts'ebeliso ea bona.

Thepa ea Sebele:

1. Solubility: HPMC le HEMC ka bobeli li qhibiliha ka metsing, ho bolelang hore li qhibiliha habonolo metsing ho etsa tharollo e hlakileng. Leha ho le joalo, ho qhibiliha ha HEMC ho molemo ho feta ho HPMC.
2. Viscosity: Ka bobeli HPMC le HEMC ke li-thickeners 'me li bontša boitšoaro ba pseudoplastic, e leng se bolelang hore viscosity ea bona e fokotseha ha e le tlas'a khatello ea ho kuta. HEMC ka kakaretso e na le viscosity e phahameng ho feta HPMC.
3. Ho Boloka Metsi: Ka bobeli HPMC le HEMC li tsejoa ka thepa ea tsona e babatsehang ea ho boloka metsi, e leng se etsang hore e be molemo mesebetsing ea kaho moo ho laola mongobo ho leng bohlokoa.

Lintho tsa Lik'hemik'hale:

1. Sebopeho sa Lik'hemik'hale: Phapang e kholo pakeng tsa HPMC le HEMC e itšetlehile ka sebopeho sa tsona sa lik'hemik'hale. HPMC e na le sehlopha sa hydroxypropyl se khomaretsoeng mokokotlong oa cellulose, ha HEMC e na le sehlopha sa hydroxyethyl se khomaretsoeng.
2. Tšebeliso ea Lik'hemik'hale: Ka bobeli HPMC le HEMC ke nonionic cellulose ethers 'me kahoo li tsitsitse lik'hemik'hale. Leha ho le joalo, HEMC e sebetsa haholo ho feta HPMC ka lebaka la ho ba teng ha sehlopha sa ethyl, e leng se etsang hore e be bonolo haholoanyane ho hydrolysis.

Lisebelisoa:

1. HPMC Applications: HPMC e atisa ho sebelisoa ho li-adhesives tsa lithaele, lirafshoa tsa samente, le lihlahisoa tse thehiloeng ho gypsum ka lebaka la ho boloka metsi hantle le thepa ea eona e teteaneng. E boetse e sebelisoa lits'ebetsong tsa kantle tsa ho kenya le ho qeta (EIFS) ho ntlafatsa ts'ebetso ea seretse.
2. HEMC Applications: HEMC e atisa ho sebelisoa liretseng tse entsoeng ka samente, li-adhesive tsa lithaele, le lihlahisoa tse entsoeng ka gypsum ka lebaka la thepa ea eona e phahameng ea ho boloka metsi. E boetse e sebelisoa ka metsoako ea boipheliso, moo e sebetsang e le moemeli oa ho laola phallo.

Ka kakaretso, HPMC le HEMC ke mefuta e 'meli ea li-cellulose ethers tse sebelisoang hangata indastering ea kaho. Leha ba arolelana lintho tse ling tse tšoanang, joalo ka ho qhibiliha ha bona ha metsi, boits'oaro ba pseudoplastic, le thepa e ntle ea ho boloka metsi, ho boetse ho na le liphapang tse ling tsa bohlokoa tsa 'mele le lik'hemik'hale tsa bona, hammoho le ts'ebeliso ea bona. HPMC e atisa ho sebelisoa ho li-adhesives tsa lithaele, lirekere tsa samente, le lihlahisoa tse entsoeng ka gypsum, ha HEMC e atisa ho sebelisoa liretseng tse entsoeng ka samente, li-adhesive tsa lithaele le metsoako ea ho ikemela.