Overview
Cellulose ipolymer yakasikwa inoumbwa neanhydrous β-glucose units, uye ine mapoka matatu ehydroxyl pane yega yega mhete.Nekugadziriswa kwekemikari cellulose, zvakasiyana-siyana zvinobva kune cellulose zvinogona kugadzirwa, uye imwe yacho ndeye cellulose ether.Cellulose ether inhengo yepolymer ine ether chimiro chinobva muselulosi, kusanganisira methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose, nezvimwe.Izvi zvinobva kune zvinowanzogadzirwa nekuita alkali cellulose ne monochloroalkane, ethylene oxide, propylene oxide, kana monochloroacetic acid.Iyo inoguma cellulose ether ine yakanakisa kunyungudika kwemvura, kugona kukora, uye firimu-kugadzira zvivakwa, uye inoshandiswa zvakanyanya mumaindasitiri akadai sekuvaka, mishonga, chikafu, uye zvizorwa.Cellulose ether chinhu chinodzoreredzwa, chinoparadza, uye chisiri chepfu, zvichiita kuti ive yakakurumbira imwe nzira kune yakagadzirwa polymers.
Performance uye Features
1. Chitarisiko Chimiro
Cellulose ether ichena, isinganhuhwi, hupfu hunyoro hunotora hunyoro nyore nyore uye hunoumba yakagadzikana, inopenya, yakajeka colloid kana yakanyungudutswa mumvura.
2. Kuumbwa kweFirimu uye Kunamatira
Kugadziriswa kwekemikari ye cellulose kugadzira cellulose ether kunokanganisa zvakanyanya zvimiro zvayo, kusanganisira kunyungudika kwayo, kugona kugadzira firimu, kusimba kwebhondi, uye kuramba munyu.Hunhu uhu hunoita kuti cellulose ether ive polima inodiwa zvikuru ine simba remuchanicha rakanakisa, kuchinjika, kudzivirira kupisa, uye kutonhora kwechando.Pamusoro pezvo, inoratidzira kuenderana kwakanaka nemaresheni akasiyana uye mapurasitiki, zvichiita kuti ive yakakodzera kushandiswa mukugadzira mapurasitiki, mafirimu, varnishes, adhesives, latex, uye zvinodhaka zvekuputira zvinhu.Nekuda kwemaitiro ayo akasiyana-siyana, cellulose ether yave chinhu chakakosha muindasitiri yekugadzira, ichipa kuvandudzwa kwekuita, kugadzikana, uye kusimba kune akawanda ezvigadzirwa.Nekuda kweizvozvo, ine huwandu hwakawanda hwekushandisa munzvimbo dzakasiyana siyana, kusanganisira mishonga, machira, machira, kuvaka, uye maindasitiri ezvekudya, pakati pezvimwe.
3. Solubility
Kunyungudika kwema cellulose ethers akadai semethylcellulose, methyl hydroxyethyl cellulose, hydroxyethyl cellulose, uye sodium carboxymethyl hydroxyethyl cellulose inosiyana zvichienderana nekupisa uye solvent inoshandiswa.Methylcellulose uye methyl hydroxyethyl cellulose zvinonyungudika mumvura inotonhora uye zvimwe organic solvents asi inonaya kana yapiswa, ine methylcellulose inonaya pa45-60°C uye yakasanganiswa etherified methyl hydroxyethyl cellulose pa65-80°C.Nekudaro, iyo precipitates inogona kunyungudika zvakare kana tembiricha yadzikiswa.Kune rimwe divi, hydroxyethyl cellulose uye sodium carboxymethyl hydroxyethyl cellulose inonyungudika nemvura chero ipi zvayo tembiricha asi isinganyungudike muzvinonyungudutsa zveorganic.Aya ma cellulose ether ane akasiyana solubility uye kunaya kwemvura anoita kuti akwanise kushandiswa kwakasiyana-siyana mumaindasitiri akadai semapurasitiki, mafirimu, machira, uye zvinonamira.
4. Kukora
Kana cellulose ether inonyungudika mumvura, inoumba colloidal solution iyo viscosity inokonzerwa nehuwandu hwepolymerization ye cellulose ether.Mhinduro yacho ine hydrated macromolecules inoratidza maitiro asiri eNewtonian, kureva, mafambiro ekuyerera anoshanduka neshear force inoshandiswa.Nekuda kweiyo macromolecular chimiro, iyo viscosity yemhinduro inowedzera nekukurumidza nekufungisisa, asi inoderera nekukurumidza nekuwedzera tembiricha.Iyo viscosity ye cellulose ether mhinduro inokonzerwawo nepH, ionic simba, uye kuvapo kwemamwe makemikari.Izvi zvakasiyana-siyana zve cellulose ether zvinoita kuti zvive zvakakosha mumashandisirwo akasiyana siyana seanonamira, marashi, zvizorwa, uye zvigadzirwa zvekudya.
Application
1. Indasitiri yePetroleum
Sodium carboxymethyl cellulose (NaCMC) is a cellulose ether ine huwandu hwakasiyana hwekushandisa mukubvisa oiri maitiro.Yakanakisa viscosity-inowedzera uye kurasikirwa kwemvura kudzikisa zvivakwa kunoita kuti ive sarudzo yakakurumbira mukuchera zvinwiwa, simende zvinwiwa, uye zvinwiwa zvinotsemuka.Kunyanya, yakaratidza mhedzisiro inovimbisa mukuvandudza mafuta ekudzoreredza.NaCMC inogona kuramba kusvibiswa kwakasiyana-siyana kunyungudika kwemunyu uye kuwedzera kudzoreredza kwemafuta nekudzikisa kurasikirwa kwemvura, uye kuramba kwayo munyu uye kugona-kuwedzera-kusimba kunoita kuti ive yakakodzera kugadzirira zvinwiwa zvekuchera zvemvura yakachena, mvura yegungwa, uye yakazara mvura yemunyu.
Sodium carboxymethyl hydroxypropyl cellulose (NaCMHPC) uye sodium carboxymethyl hydroxyethyl cellulose (NaCMHEC) maviri e-cellulose ether anobva kune yakakwira slurrying mwero, yakanaka anti-calcium kuita, uye yakanaka viscosity-inowedzera kugona, zvichiita kuti ive sarudzo dzakanakisa sevashandi vekuchera madhaka ekurapa uye zvinhu. kugadzirira mvura yekupedzisira.Ivo vanoratidza yepamusoro viscosity-inowedzera kugona uye kurasikirwa kwemvura kudzikisa zvivakwa zvichienzaniswa nehydroxyethyl cellulose, uye kugona kwavo kugadzirwa kuita zvinwiwa zvekudhirowa zvakasiyana-siyana pasi pehuremu hwecalcium chloride zvinovaita chiwedzere chakasiyana-siyana chekuwedzera kugadzirwa kwemafuta.
Hydroxyethyl cellulose (HEC) chimwe chinobva muselulosi chinoshandiswa sedhaka rinowedzera uye inodzikamisa mumiriri mukuchera, kupedzisa, uye kuita simende.Kuenzaniswa nesodium carboxymethyl cellulose uye guar gum, HEC ine kumiswa kwejecha kwakasimba, munyu wakawanda, kumira zvakanaka kwekupisa, kushomeka kusanganisa kuramba, kurasikirwa kwemvura kushoma, uye gel breaking block.HEC yakashandiswa zvakanyanya nekuda kwekunaka kwayo kukora mhedzisiro, yakaderera masara, uye zvimwe zvivakwa.Pakazere, cellulose ethers seNaCMC, NaCMHPC, NaCMHEC, uye HEC vanoita basa rakakosha mukuita kwekubvisa oiri uye vakaratidza kugona kwakakosha mukuvandudza kudzoreredzwa kwemafuta.
2. Kuvaka uye Pendi Indasitiri
Sodium carboxymethyl cellulose inosiyana-siyana yekuvakisa yekuwedzera iyo inogona kushandiswa senge retarder, inochengetedza mvura mumiriri, thickener uye binder yekuvaka masonry uye plastering dhaka.Inogona zvakare kushandiswa seanoparadzira, inochengetedza mvura mumiriri uye thickener yepurasita, dhaka uye pasi zvinhu zvinomisa.Yakakosha masonry uye plastering dhaka musanganiswa wakagadzirwa necarboxymethyl cellulose inogona kuvandudza kushanda, kuchengetwa kwemvura uye kusagadzikana kwekuputika, kudzivirira kuputika uye kuvharika mumadziro evhavha.Uye zvakare, methyl cellulose inogona kushandiswa kugadzira zvakatipoteredza zvine hushamwari zvivakwa zvekushongedza zvivakwa zvepamusoro-giredhi madziro uye ematombo mataira enzvimbo, pamwe nekushongedza kwepamusoro kwembiru uye zviyeuchidzo.
3. Daily Chemical Industry
Sodium carboxymethyl cellulose inogoneka inodzikamisa viscosifier inogona kushandiswa mumhando dzakasiyana dzezvigadzirwa.Muzvigadzirwa zvepaste zvine hupfu hwakasimba mbishi zvinhu, inoita basa rakakosha mukuparadzira uye kumisa kudzikamisa.Kune yemvura kana emulsion cosmetics, inoshanda seyakakora, inoparadzira, uye homogenizing agent.Iyi cellulose inobuda inogona zvakare kuita semulsion stabilizer, mafuta ekuzora uye shampoo thickener uye stabilizer, mazino anonamira stabilizer, uye detergent thickener uye anti-stain agent.Sodium carboxymethyl hydroxypropyl cellulose, rudzi rwe cellulose ether, inoshandiswa zvakanyanya seye mazino stabilizer nekuda kweiyo thixotropic zvimiro, iyo inobatsira kuchengetedza mazino kuumbwa uye kuenderana.Iri rinobva kune zvakare rinopokana nemunyu neasidhi, zvichiita kuti rive rinoshanda mukobvu mune zvekugezesa uye anti-stain agents.Sodium carboxymethyl cellulose inowanzoshandiswa setsvina dispersant, thickener, uye dispersant mukugadzira washing powder uye liquid detergents.
4. Mushonga uye Indasitiri Yekudya
Muindasitiri yemishonga, Yibang hydroxypropyl carboxymethylcellulose (HPMC) inoshandiswa zvakanyanya semushonga wekubvisa mushonga wemukanwa unodzorwa kuburitswa uye gadziriro dzekuburitsa.Inoita sekusunungurwa kunonoka zvinhu kugadzirisa kusunungurwa kwemishonga, uye sechinhu chinoputira kunonoka kusunungurwa kwemaitiro.Methyl carboxymethyl cellulose uye ethyl carboxymethyl cellulose inowanzoshandiswa kugadzira mahwendefa nemakapisi, kana kupfeka mahwendefa akaputirwa neshuga.Muindasitiri yechikafu, premium giredhi cellulose ethers anoshanda thickeners, stabilizers, excipients, mvura inochengetedza maajenti uye mechanic foaming agents muzvikafu zvakasiyana.Methylcellulose uye hydroxypropylmethylcellulose inoonekwa se metabolically inert uye yakachengeteka kushandiswa.High-purity carboxymethylcellulose inogona kuwedzerwa kune zvigadzirwa zvekudya, kusanganisira mukaka nekrimu, condiments, jamu, jelly, zvokudya zvekakani, sirasi yetafura, uye zvinwiwa.Pamusoro pezvo, carboxymethyl cellulose inogona kushandiswa mukufambisa nekuchengetedza michero mitsva seyekuputira epurasitiki, ichipa yakanaka yekuchengeta mhedzisiro, kushoma kusvibiswa, kusakuvadzwa, uye nyore kugadzira michina.
5. Optical uye Electrical Functional Materials
Iyo yakakwirira-kuchena cellulose ether ine asidhi yakanaka uye munyu kuramba inoshanda se electrolyte thickening stabilizer, ichipa yakagadzikana colloidal mabhatiri ealkaline uye zinc-manganese.Mamwe macellulose ether anoratidza thermotropic liquid crystallinity, yakadai sehydroxypropyl cellulose acetate, inoumba makristasi emvura echolesteric ari pasi pe164°C.
Main Reference
● Duramazwi reMakemikari.
● Hunhu, kugadzirira uye kushandiswa kwemaindasitiri kwe cellulose ether.
● Status Quo uye Kuvandudza Trend yeCellulose Ether Market.
