1. Overview:
Cellulose ether is natural polymer compound, chimiro chayo chemakemikari ipolysaccharide macromolecule inobva pane anhydrous β-glucose, uye kune rimwe boka rekutanga rehydroxyl uye mapoka maviri echipiri ehydroxyl pane imwe neimwe mhete. Kuburikidza nekugadziriswa kwemakemikari, mutsara we cellulose derivatives inogona kuwanikwa, uye cellulose ether ndeimwe yavo. Cellulose ether inhengo yepolymer ine ether yakagadzirwa ne cellulose, yakadai semethyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose, nezvimwewo. Kazhinji, inogona kuwanikwa nekuita kwe alkali cellulose uye monochloroalkane, ethylene oxide. , propylene oxide kana monochloroacetic acid.
2. Kuita uye Zvimiro:
(1) Chitarisiko
Cellulose ether inowanzo chena kana mukaka chena, haina kunhuwa, isina chepfu, fluid fibrous poda, iri nyore kusveta mwando, uye inonyungudika kuita stable viscous stable colloid mumvura.
(2) Kugadzira firimu uye kunamatira
Iyo etherification ye cellulose ether ine simba guru pamaitiro ayo uye kuita kwayo, sekunyungudika, kugona kugadzira firimu, kusimba kwechisungo uye munyu kuramba. Cellulose ether ine high mechanical simba, flexibility, heat resistance and cold resistance, uye inoenderana zvakanaka nesiyana resin uye plasticizers, uye inogona kushandiswa kugadzira mapurasitiki, mafirimu, varnishes, adhesives, latex uye Drug coating zvinhu, nezvimwe.
(3) Solubility
Methylcellulose inonyungudika mumvura inotonhora, isinganyunguriki mumvura inopisa, uye inonyungudika mune mamwe organic solvents; methyl hydroxyethyl cellulose inonyungudika mumvura inotonhora, isinganyunguriki mumvura inopisa uye organic solvents. Nekudaro, kana iyo aqueous solution yemethylcellulose uye methylhydroxyethylcellulose ichipisa, methylcellulose uye methylhydroxyethylcellulose inonaya. Methylcellulose inonaya pa45-60°C, ukuwo tembiricha yekunaya kwemusanganiswa etherified methyl hydroxyethyl cellulose inowedzera kusvika 65-80°C. Kana tembiricha yadzikiswa, mvura yacho inonyungudika. Hydroxyethyl cellulose uye sodium carboxymethyl hydroxyethyl cellulose inonyungudika mumvura pane chero tembiricha uye isinganyungudika muorganic solvents.
(4) kukobvu
Cellulose ether inonyungudika mumvura mune colloidal fomu, uye viscosity yayo inoenderana nehuwandu hwepolymerization ye cellulose ether. Mhinduro yacho ine hydrated macromolecules. Nekuda kwekupinzwa kwema macromolecules, mafambiro ekuyerera kwezvigadziriso akasiyana neayo emvura yeNewtonian, asi anoratidza maitiro anochinja nekuchinja kweshear force. Nekuda kweiyo macromolecular chimiro che cellulose ether, viscosity yemushonga inowedzera nekukurumidza nekuwedzera kwekutarisa uye inoderera nekukurumidza nekuwedzera kwekushisa.
Application
(1) Indasitiri yePetroleum
Sodium carboxymethyl cellulose inonyanya kushandiswa mukutora mafuta, uye inoshandiswa mukugadzira madhaka kuwedzera viscosity uye kuderedza kurasikirwa kwemvura. Inogona kuramba kwakasiyana soluble munyu kusvibiswa uye kuwedzera mafuta kupora. Sodium carboxymethyl hydroxypropyl cellulose (NaCMHPC) uye sodium carboxymethyl hydroxyethyl cellulose (NaCMHEC) yakanaka kuchera madhaka ekurapa madhiri uye zvinhu zvekugadzirira mvura yekupedza, ine yakanyanya slurrying mwero uye munyu kuramba, Yakanaka anti-calcium kuita, yakanaka viscosity-inowedzera kugona, tembiricha kuramba. (160 ℃) pfuma. Yakakodzera kugadzirira zvinwiwa zvekuchera zvemvura yakachena, mvura yegungwa uye yakazara mvura yemunyu. Inogona kugadzirwa kuita zvinwiwa zvekuchera zvakasiyana-siyana (103-127g/cm3) pasi pehuremu hwecalcium chloride, uye ine imwe viscosity uye kuderera kwemvura kurasikirwa, kugona kwayo kuwedzera viscosity uye kurasikirwa kwemvura kuderedza kugona kuri nani pane hydroxyethyl cellulose. , uye chinhu chinowedzera chakanaka chekuwedzera kugadzirwa kwemafuta.
Sodium carboxymethyl cellulose inotorwa selulosi inoshandiswa zvakanyanya mukuita kubviswa kweoiri. Inoshandiswa mukuchera mvura, simende fluid, fracturing fluid uye kuvandudza kudzoreredza kwemafuta, kunyanya mukuchera mvura. Iyo inonyanya kuita basa rekudzikisa kurasikirwa kwemvura uye kuwedzera viscosity. Hydroxyethyl cellulose (HEC) inoshandiswa sedhaka rinowedzera uye inodzikamisa mugadziri mukuchera, kupedzisa matsime uye simende. Kuenzaniswa nesodium carboxymethyl cellulose uye guar gum, hydroxyethyl cellulose ine yakanaka thickening mhedzisiro, yakasimba jecha kuturika, yakakwirira munyu munyu, yakanaka kupisa kupisa, kushoma kusanganisa kuramba, kurasikirwa kwemvura kushoma, uye kuputsika kwegel. Block, yakaderera yakasara uye mamwe maitiro, yakashandiswa zvakanyanya.
(2) Indasitiri yekuvaka uye pendi
Sodium carboxymethyl cellulose inogona kushandiswa seretarder, kuchengetedza mvura, thickener uye binder pakuvaka masonry uye plastering dhaka admixtures, uye inogona kushandiswa sepurasita, dhaka uye pasi kuenzanisa zvinhu zvegypsum base uye simende base Inoshandiswa se dispersant, mvura. kuchengetedza agent uye thickener. Yakakosha masonry uye plastering dhaka musanganiswa wakagadzirwa necarboxymethyl cellulose, iyo inogona kuvandudza kushanda, kuchengetedza mvura uye kutsemuka kuramba kwedhaka, uye kudzivirira kuputika uye kuvharika mumadziro eblock. ngoma. Zvivako zvekushongedza pamusoro pezvivakwa Cao Mingqian nevamwe vakagadzira chivakwa chepamusoro chekushongedza zvinhu kubva kumethyl cellulose. Nzira yekugadzira iri nyore uye yakachena. Inogona kushandiswa kune yakakwirira-giredhi madziro uye matombo mataira enzvimbo, uye inogona zvakare kushandiswa pakushongedza kwepamusoro kwembiru uye zviyeuchidzo.
(3) Zuva nezuva indasitiri yemakemikari
Iyo inodzikamisa viscosifier sodium carboxymethyl cellulose inotora basa rekuparadzira uye kumiswa kudzikamisa muzvigadzirwa zvekunamira zvehupfu hwakasimba zvinhu, uye inotora basa rekukora, kuparadzira uye homogenizing mune yemvura kana emulsion cosmetics. Inogona kushandiswa se stabilizer uye tackifier. Emulsion stabilizers inoshandiswa se emulsifiers, thickeners uye stabilizers yezvizoro uye shampoos.Sodium carboxymethyl hydroxypropyl celluloseinogona kushandiswa seyakagadzikana yeanonamatira mazino. Iine yakanaka thixotropic properties, iyo inoita kuti mazino ave akanaka mukuumbwa, kuchengetedza kwenguva refu pasina deformation, uye yunifomu uye yakapfava kuravira. Sodium carboxymethyl hydroxypropyl cellulose ine yakanyanya munyu kuramba uye asidi kuramba, uye mhedzisiro yaro yakakura zvikuru kupfuura iyo yecarboxymethyl cellulose. Inogona kushandiswa seyakakora mune detergents uye anti-stain agent. Dispersion thickener mukugadzirwa kwe detergents, sodium carboxymethylcellulose inowanzo shandiswa setsvina inorasa poda yekuwachisa, thickener uye dispersant yezvinosuka mvura.
(4) Mushonga uye indasitiri yezvokudya
Muindasitiri yemishonga, hydroxypropyl carboxymethylcellulose (HPMC) inogona kushandiswa semushonga wemushonga, unoshandiswa zvakanyanya mumuromo zvinodhaka matrix inodzorwa kuburitswa uye inosimudzira kuburitswa gadziriro, seyakaburitswa inodzosera zvinhu kudzora kuburitswa kwezvinodhaka, sechinhu chekuputira kunonoka Kuburitswa. magadzirirwo, akawedzera-kuburitswa pellets, akawedzera-kuburitswa capsules. Inonyanya kushandiswa ndeye methyl carboxymethyl cellulose uye ethyl carboxymethyl cellulose, yakadai seMC, iyo inowanzoshandiswa kugadzira mahwendefa nemakapisi, kana kupfekedza mahwendefa akaputirwa neshuga. Premium giredhi cellulose ethers inogona kushandiswa muindasitiri yechikafu, uye inoshanda thickeners, stabilizers, excipients, mvura inochengetedza maajenti uye mechanical foaming agents mukudya kwakasiyana. Methyl cellulose uye hydroxypropyl methyl cellulose zvakazivikanwa se physiologically isingakuvadzi metabolic inert zvinhu. High-kuchena (pamusoro pe99.5%) carboxymethylcellulose (CMC) inogona kuwedzerwa kune zvokudya, zvakadai semukaka nemishonga yekrimu, condiments, jamu, jelly, zvokudya zvekakani, sirasi yetafura uye zvinwiwa. Carboxymethyl cellulose ine kuchena kweinopfuura 90% inogona kushandiswa mune zvine chekuita nechikafu, sekutakura uye kuchengetedza michero mitsva. Rudzi urwu rwekuputira epurasitiki rune mabhenefiti ezvakanaka-kuchengetedza maitiro, kushomeka kusvibiswa, hapana kukuvadzwa, uye nyore kugadzira michina.
(5) Optical uye magetsi anoshanda zvinhu
Electrolyte thickening stabilizer ine kuchena kwakakwirira kweselulosi ether, yakanaka asidi kuramba uye munyu kuramba, kunyanya pasi pasi uye heavy metal content, saka colloid yakasimba kwazvo, yakakodzera kune alkaline mabhatiri, zinc-manganese mabhatiri Electrolyte thickening stabilizer. Mazhinji cellulose ether anoratidza thermotropic liquid crystallinity. Hydroxypropyl cellulose acetate inoumba thermotropic cholesteric liquid makristasi ari pasi pe164°C.
Nguva yekutumira: Jan-12-2023