Li-cellulose ethers ke li-polymers tsa maiketsetso tse entsoeng ka selulose ea tlhaho 'me li fetotsoe ka lik'hemik'hale. Cellulose ether e tsoa ho cellulose ea tlhaho. Ho fapana le li-polymers tsa maiketsetso, tlhahiso ea cellulose ether e thehiloe ho selulose, thepa ea motheo ka ho fetisisa, motsoako oa tlhaho oa polymer. Ka lebaka la ho khetheha ha sebopeho sa cellulose ea tlhaho, selulose ka boeona ha e na bokhoni ba ho itšoara ka li-etherizing agents. Leha ho le joalo, ka mor'a ho phekoloa ha li-solubilizers, maqhama a matla a hydrogen pakeng le ka har'a liketane tsa molek'hule ea senyeha, 'me mosebetsi oa sehlopha sa hydroxyl o lokolloa ka selulose ea alkali e nang le bokhoni ba ho itšoara,' me ka mor'a karabelo ea moemeli oa etherizing, sehlopha sa OH se fetoloa. ka sehlopha KAPA ho fumana cellulose ether.
Li-cellulose ethers li na le phello e hlakileng ea ho kenya moea linthong tse sa tsoa tsoakoa tsa samente. Li-cellulose ethers li na le lihlopha tsa hydrophilic (hydroxyl, ether) le hydrophobic (methyl, glucose ring) 'me ke li-surfactants tse sebetsang ka holim'a metsi, kahoo li na le phello ea moea. Phello ea ho kenya moea ea cellulose ether e tla hlahisa phello ea "bolo", e ka ntlafatsang ts'ebetso ea lisebelisoa tse ncha, tse kang ho eketsa polasetiki le boreleli ba seretse nakong ea ts'ebetso, e leng molemo ho jala seretse; e tla boela e ntlafatse tlhahiso ea seretse le ho fokotsa litšenyehelo tsa tlhahiso ea seretse; leha ho le joalo, e tla eketsa porosity ea thepa e thata le ho fokotsa matla a eona le modulus elastic, joalo-joalo. Mechanical properties.
Ha e le surfactant, cellulose ether e boetse e na le phello ea ho kolobisa kapa ho tlotsa likaroloana tsa samente, tseo hammoho le phello ea eona ea ho kenya moea e eketsang metsi a lisebelisoa tsa samente, empa phello ea eona e teteaneng e fokotsa ho phalla, le phello ea cellulose ether ho fluidity ea. thepa ea cementitious ke motsoako oa plasticizing le thickening liphello. Ka kakaretso, ha palo ea cellulose ether e le tlase haholo, e bontša haholo-holo phello ea polasetiki kapa ho fokotsa metsi; ha palo e phahame, phello e matla ea cellulose ether e eketseha ka potlako, 'me phello ea eona ea ho kenya moea e atisa ho tlala, kahoo e bontša phello e teteaneng kapa e eketsa tlhokahalo ea metsi.
Nako ea poso: Apr-24-2022