Chii chinonzi Cellulose Ether application?

Inosuma iyo cellulose ether kugadzirira, cellulose ether performance uyecellulose ether application, kunyanya kushandiswa mune coatings.
Mazwi akakosha: cellulose ether, kuita, kushandisa
Cellulose ndeye yakasikwa macromolecular compound.Chimiro chayo chemakemikari ndeye polysaccharide macromolecule ine anhydrous β-glucose sechindori chepasi.Kune rimwe rekutanga hydroxyl boka uye maviri echipiri hydroxyl mapoka pane yega yega mhete.Kuburikidza nekugadzirisa kwayo kemikari, mutsara we cellulose derivatives inogona kuwanikwa, uye cellulose ether ndeimwe yavo.Cellulose ethers inoshandiswa zvakanyanya mumaindasitiri mazhinji.

1.Kugadzirira

Cellulose ether inowanikwa nekuita selulosi neNaOH, yobva yaita nemamonomers akasiyana-siyana akadai semonochloromethane, ethylene oxide, propylene oxide, nezvimwewo, uye kugeza ne-product munyu uye cellulose sodium.

2.Performance

2.1 Chitarisiko: Cellulose ether chena kana mukaka chena, haina kunhuwa, isiri-chepfu, fibrous poda ine fluidity, nyore kutora unyoro, uye inonyungudika kuita yakajeka viscous stable colloid mumvura.
2.2 Ionicity: MC, MHEC, MHPC, HEC ndeye nonionic;NaCMC, NaCMHEC ndeye anionic.
2.3 Etherification: Hunhu uye dhigirii ye etherification ye etherification ichakanganisa kushanda kwe cellulose ether panguva ye etherification, yakadai sekunyungudika, kukwanisa kugadzira firimu, kusimba kwekubatanidza uye kupikisa munyu.
2.4 Solubility: (1) MC inonyungudika mumvura inotonhora, isinganyunguriki mumvura inopisa, uye inonyungudika mune zvimwe zvinonyungudutsa;MHEC inonyungudika mumvura inotonhora, isingasviki mumvura inopisa uye organic solvents.Nekudaro, kana mhinduro ine mvura yeMC neMHEC ichipisa, MC neMHEC inonaya.MC inonaya pa45-60°C, ukuwo tembiricha yemvura yakasanganiswa etherified MHEC ichikwira kusvika 65-80°C.Kana tembiricha yadzikiswa, mvura yacho inonyungudika.(2) HEC, NaCMC, uye NaCMHEC inonyungudika mumvura pane chero tembiricha, asi isinganyungudika mune organic solvents (pamwe nechero mashoma).
2.5 Kunonoka kuzvimba: Cellulose ether ine kumwe kunonoka kuzvimba mumvura isina kwayakarerekera pH, asi inogona kukunda uku kunonoka kuzvimba mu alkaline pH mvura.
2.6 Viscosity: Cellulose ether inonyungudika mumvura muchimiro checolloid, uye viscosity yayo inoenderana nedhigirii repolymerization ye cellulose ether.Mhinduro yacho ine hydrated macromolecules.Nekuda kwekupinzwa kwema macromolecules, mafambiro ekuyerera kwemhinduro anosiyana neaya eNewtonian fluid, asi anoratidza hunhu hunochinja neshear force.Nekuda kweiyo macromolecular chimiro che cellulose ether, viscosity yemushonga inowedzera nekukurumidza nekuwedzera kwekutarisa uye inoderera nekukurumidza nekuwedzera kwekushisa.
2.7 Kugadzikana kweBiological: Cellulose ether inoshandiswa muchikamu chemvura.Chero bedzi mvura iripo, mabhakitiriya anokura.Kukura kwebhakitiriya kunotungamira mukugadzirwa kwe enzyme bacteria.Iyo enzyme inotyora isina kuisirwa anhydroglucose unit bond padyo ne cellulose ether, ichideredza huremu hwepolymer.Nokudaro, kana iyo cellulose ether aqueous solution inofanira kuchengetedzwa kwenguva yakareba, inochengetedza inofanira kuwedzerwa kwairi.Izvi ndezvechokwadi kunyangwe neantimicrobial cellulose ethers.

3. Chinangwa

3.1 Oilfield: NaCMC inonyanya kushandiswa mukushandiswa kwemafuta, uye inoshandiswa mukugadzira madhaka kuwedzera viscosity uye kuderedza kurasikirwa kwemvura.Inogona kuramba dzakasiyana-siyana soluble munyu kusvibiswa uye kunatsiridza mafuta kupora.Sodium carboxymethyl hydroxypropyl cellulose uye sodium carboxymethyl hydroxyethyl cellulose zvakanaka kuchera madhaka ekurapa madhiri uye zvinhu zvekugadzira mvura yekupedzisa, ine yakakwirira pulping rate, yakanaka munyu uye calcium kuramba, Iine yakanaka viscosity-inowedzera kugona uye tembiricha kuramba (160 ° C).Yakakodzera kugadzirira kupedzisa zvinwiwa zvemvura yakachena, mvura yegungwa uye yakazara mvura yemunyu.Inogona kugadzirwa kuti iite zvinwiwa zvekupedzisa zvakasiyana-siyana (1.03-1.279 / Cm3) pasi pehuremu hwecalcium chloride, uye ine imwe viscosity.Uye kuderera kwemvura kurasikirwa, viscosity yayo inowedzera kugona uye kurasikirwa kwemvura kudzikisa kugona kuri nani pane hydroxyethyl cellulose, iri muwedzeredzo wakanaka wekuwedzera kugadzirwa kwemafuta.
3.2 Kuvaka Ceramics: NaCMC inogona kushandiswa seretarder, inochengetedza mvura, thickener uye binder, kuitira kuti zvigadzirwa zveceramic zvinogadzirwa zvive nechitarisiko chakanaka uye zvisina hurema uye mabhuru.
3.3 Kugadzira Pepa: NaCMC inoshandiswa mukati nekunze saizi uye kuzadza nekuchengetedza bepa pamusoro, uye inogona kutsiva casein, kuitira kuti inki yekudhinda ipinde nyore uye mipendero ijeke.Mukugadzira Wallpaper, inogona kushandiswa se pigment dispersant, tackifier, stabilizer uye sizing agent.
3.4 Machira: NaCMC inoshandiswa sechinotsiva zviyo uye saizi muindasitiri yemachira, uye hazvisi nyore kushata nekuumbwa.Paunenge uchidhinda uye kudhaya, hapana chikonzero chekubvisa, uye dhayi inogona kuwana yunifomu colloid mumvura, iyo inowedzera hydrophilicity uye kupinda kwedhayi.Panguva imwecheteyo, nekuda kwekuchinja kuduku mu viscosity, zviri nyore kugadzirisa kusiyana kwemavara.CMHEC inoshandiswa seyakakora yekudhinda uye kudhaya pulp, ine masara madiki uye yakakwira goho remavara, uye kudhinda uye kudhaya mhando yakakwirira kwazvo kupfuura yayo imwechete ionic uye isiri-ionic cellulose ether zvigadzirwa.
3.5 Fodya: NaCMC inoshandiswa kubatanidza fodya.Inonyungudika nokukurumidza uye ine simba rakasimba rekubatanidza, izvo zvinobatsira kuvandudza kunaka kwefodya uye kuderedza mari.
3.6 Cosmetics: NaCMC inobata basa rekuparadzira, kumisa uye kudzikamisa zvigadzirwa zvekunamira zvezvakasimba silty zvigadzirwa, uye inotora basa rekukora, kuparadzira uye homogenizing mune yemvura kana emulsion cosmetics.Inogona zvakare kushandiswa se emulsifier, thickener uye stabilizer yemafuta uye shampoo.
3.7 Mabhatiri: NaCMC ine kuchena kwakanyanya, yakanaka asidhi uye munyu kuramba, kunyanya yakaderera iron uye heavy metal content, uye iyo colloid yakasimba kwazvo, inokodzera alkaline mabhatiri uye zinc-manganese mabhatiri.
3.8 Pendi dzakagadzirwa nemvura: HEC neMHEC inogona kushandiswa sezvidziviriro, makobvu uye maajenti ekuchengetedza mvura kune latex pendi.Uye zvakare, ivo vanogona zvakare kushandiswa sevanoparadzira, tackifiers uye firimu-inogadzira vamiririri vemavara esimende pendi.
3.9 Midziyo yekuvakisa: inogona kushandiswa se dissperser, mvura inochengetedza mvura uye thickener yekupurasita nedhaka regypsum yepasi layer uye simende yepasi layer, uye pasi pevhu.
3.10 Glaze: Inogona kushandiswa seyakanamira ye glaze.
3.11 Detergent: Inogona kushandiswa seanorwisa-adhesion agent yekukora tsvina.
3.12 Emulsion dispersion: inogona kushandiswa sekudzikamisa uye thickener.
3.13 Mushonga wemazino: NaCMHPC inogona kushandiswa seyakagadzika yezvinonamira mushonga wemazino.Iine yakanaka thixotropic properties, ichiita kuti mazino ave akanaka muchimiro, kwenguva refu pasina deformation, uye ane yunifomu uye yakapfava kuravira.NaCMHPC ine yakanyanya munyu kuramba uye asidi kuramba, uye mhedzisiro yaro yakakura kudarika yeCMC.

4. Kushandiswa mukuputira uye mapepa

Cellulose ether inobata basa rakakosha mukuputira uye paste.Ingowedzera huwandu hwehuwandu hwehuwandu hweO. 2% kusvika 0.5% inogona kukora, kuchengetedza mvura, kudzivirira pigments uye mafiritsi kubva pakugadzirisa, uye kuwedzera kunamatira uye kusimba kwekubatanidza.
4.1 Viscosity: The viscosity ye cellulose ether aqueous solution inoshanduka neshear force, uye pendi nenamira zvakakora ne cellulose ether zvinewo hunhu uhu.Kuti zvive nyore kushandiswa kwekuputira, rudzi uye huwandu hwe cellulose ether inofanira kunyatsosarudzwa.Zvekuputira, kana uchishandisa cellulose ether, yepakati viscosity zvigadzirwa zvinogona kusarudzwa.
4.2 Kuchengetedzwa kwemvura: Cellulose ether inogona kudzivirira unyoro kubva nekukurumidza kupinda mu porous substrate, kuitira kuti igadzire yunifomu yekuputira panguva yese yekuvaka pasina kuiomesa nekukurumidza.Apo zvinyorwa zve emulsion zvakakwirira, zvinodiwa zvekuchengetedza mvura zvinogona kusangana nekushandisa zvishoma cellulose ether.Kuchengetwa kwemvura kwependi uye slurries kunoenderana nehuwandu hwe cellulose ether uye kutonhora kweiyo yakavharwa substrate.
4.3 Yakagadzikana pigment uye mafirita: Pigment uye mafirita anowanzo kunaya.Kuti uchengetedze yunifomu yepende uye yakagadzikana, iyo pigment fillers inofanira kunge yakamiswa.Kushandiswa kwe cellulose ether kunogona kuita kuti pendi ive neimwe viscosity, uye hapana kunaya kuchaitika panguva yekuchengetedza.
4.4 Kubata uye kusimba kwekubatanidza: Nekuda kwekuchengetwa kwemvura kwakanaka uye kunamatira kwe cellulose ether, kunamatira kwakanaka pakati pekupfeka uye substrate kunogona kuvimbiswa.MHEC neNaCMC vane yakanakisa yakaoma adhesion uye adhesion, saka ivo vakanyanya kukodzera mapepa pulp, nepo HEC isina kukodzera chinangwa ichi.
4.5 Dziviriro colloid basa: Pamusana pe hydrophilicity ye cellulose ether, inogona kushandiswa sevhavha yekudzivirira yekuvhara.
4.6 Thickener: Cellulose ether inoshandiswa zvakanyanya mu latex pendi semukobvu kugadzirisa viscosity yekuvaka.Yepakati uye yakakwirira viscosity hydroxyethyl cellulose uye methyl hydroxyethyl cellulose inonyanya kushandiswa mu emulsion pendi.Dzimwe nguva cellulose ether inogona zvakare kushandiswa pamwe chete neanogadzira thickeners (senge polyacrylate, polyurethane, nezvimwewo) kuvandudza zvimwe zvimiro zvependi yelatex uye kupa latex pendi yunifomu kugadzikana.
Cellulose ethers ese ane yakanakisa kuchengetedza mvura uye kukora zvivakwa, asi zvimwe zvivakwa zvakasiyana.Anionic cellulose ether, iri nyore kugadzira munyu usinganyungudika nemvura ine divalent uye trivalent cations.Naizvozvo, kana ichienzaniswa nemethyl hydroxyethyl cellulose uye hydroxyethyl fiber, sodium carboxymethyl cellulose ine kushomeka kwekukwesha kuramba.Saka sodium carboxymethyl cellulose inogona kungoshandiswa mune zvakachipa latex pendi maumbirwo.
Methyl hydroxyethyl cellulose uye methyl hydroxypropyl cellulose vane yakaderera shear viscosity uye yakakwirira surfactant zvivakwa kupfuura hydroxyethyl cellulose, nokudaro kuderedza muitiro we latex pendi kuti splatter.Uye carboxymethyl cellulose haina surfactant effect.
Hydroxyethyl cellulose ine hunhu hwekuyerera kwakanaka, kushomeka kwebhurashi kuramba uye kuvakwa kuri nyore mupende yelatex.Kana ichienzaniswa nemethyl hydroxyethyl uye methyl hydroxypropyl cellulose, inoenderana zvirinani nepigment, saka Inokurudzirwa kupenda sirika latex, pendi yemavara latex, pendi yemavara, nezvimwe.