Cellulose ethersmapolymer anonyungudika nemvura anotorwa kubva ku cellulose, iyo yakanyanya kuwanda polima muzvisikwa. Kwemakore anopfuura makumi matanhatu, izvi zvigadzirwa zvakasiyana-siyana zvakaita basa rakakosha mukuwanda kwekushandisa, kubva kune zvigadzirwa zvekuvaka, ceramics uye pendi kusvika kune chikafu, cosmetics nemishonga.
Kune zvigadzirwa zvekuvaka, cellulose ethers inoshanda seyakakora, mabhainda, magadzirirwo emafirimu uye ekuchengetedza mvura. Izvo zvinoshandawo sezviyamuro zvekumisa, surfactants, lubricant, inodzivirira colloids uye emulsifers. Uye zvakare, aqueous mhinduro yeimwe cellulose ethers thermally gel, yakasarudzika pfuma inoita basa rakakosha mune zvinoshamisa.
zvakasiyana-siyana zvekushandisa. Uku kusanganiswa kwakakosha kwezvivakwa hazviwanikwe mune chero imwe mvura-inonyungudika polymer.
Icho chokwadi chekuti zvinhu zvakawanda zvinobatsira zviripo panguva imwe chete uye zvinowanzoita musanganiswa zvinogona kuve zvakakosha zvehupfumi. Mumaapplication akawanda, maviri, matatu kana anopfuura angazodiwa kuita basa rimwechete rinoitwa nekamwe cellulose ether chigadzirwa. Mukuwedzera, cellulose ethers inonyanya kushanda, kazhinji
kuburitsa optimal performance panzvimbo yakaderera pane inodiwa nemamwe mapolymer anonyungudika nemvura.
Dow Kuvaka Kemikari inopa huwandu hwakawanda hwezvigadzirwa zve cellulosic, zvinosanganisira methyl cellulose, hydroxyethyl cellulose uye carboxymethyl cellulose. Methyl cellulose ethers inonyanya kushandiswa kune akawanda maapplication muindasitiri yekuvaka nekuvaka.
Chemistry yeCellulose Ethers
Bhizinesi redu rinopa cellulose ethers mumhando ina dzinokosha:
1.Hydroxyethyl methyl cellulose (HEMC/MHEC)
2.Hydroxypropyl methyl cellulose (HPMC,MC)
3. Hydroxyethyl cellulose (HEC)
4.Carboxy methyl cellulose(CMC)
Marudzi ese ari maviri ane polymeric musana we cellulose, yakasikwa carbohydrate iyo ine yakakosha kudzokorora chimiro cheanhydroglucose mayunitsi. Munguva yekugadzirwa kwe cellulose ethers, cellulose fibers inopisa ne caustic solution iyo, zvakare, inobatwa nemethyl chloride, uye kana propylene oxide kana ethylene oxide, ichipa hydroxypropyl methyl cellulose kana hydroxyethyl methyl cellulose, zvichiteerana. Iyo fibrous reaction product inonatswa uye inogayiwa kuita yakanaka, yakafanana poda.
Zvigadzirwa zvegiredhi zvakakosha zvakagadzirirwawo kuti zvisangane nezvinodiwa zveSpecifc maindasitiri.
Zvigadzirwa zvedu zve cellulose ether zvinowanikwa mumhando nhatu dzakasiyana: hupfu, hupfu hwakashongedzwa pamusoro uye granular. Rudzi rwechigadzirwa chiri kugadzirwa rinokurudzira kuti usarudzwe. Mumapurogiramu akawanda akaoma-musanganiswa, poda isina kushandiswa inowanzoshandiswa, asi kune yakagadzirira-kusanganiswa kushandiswa, umo iyo cellulosic powder inowedzerwa zvakananga kumvura, pamusoro-inogadziriswa poda kana mafomu egranular anosarudzwa.
General Properties
General zvivakwa zvakajairika kune yedu cellulose ethers zvakanyorwa pano. Zvigadzirwa zvega-munhu zvinoratidzira izvi zvivakwa kune akasiyana madhigirii uye zvinogona kuve nazvo
additional properties desirable for specific applications. For more information, email at sales@kimachemical.com .
| Property | Details | Zvakanakira |
| Kusunga | Inoshandiswa sepamusoro-inoshanda bhainda kune extruded fber-simende zvinhu | Simba regirini |
| Emulsifcation | Gadzirisa emulsions nekudzikisa pamusoro uye nepakati kusawirirana uye ne | Kugadzikana |
| Kugadzirwa kwemafirimu | Gadzira mafirita akajeka, akaoma, anonyungudika mumvura | • Zvipingamupinyi zvakanakisisa zvemafuta nemafuta |
| Lubrication | Inoderedza kukakavara mu simenti extrusion; inovandudza kushandiswa kwemaoko-chishandiso | • Kukwenenzvera kupomba kwekongiri, magiroti emuchina nekupfapfaidza |
| Nonionic | Zvigadzirwa hazvina ionic charge | • Hazvizove zvakaoma nesimbi yemunyu kana mamwe marudzi eionic kuti aumbe |
| Solubility (organic) | Soluble mubinary organic uye organic solvent/mvura masisitimu emhando dzakasarudzwa uye mamakisi | Yakasarudzika musanganiswa we organic solubility uye mvura solubility |
| Solubility (mvura) | • Zvigadzirwa zvepamusoro-zvakagadziriswa / granular zvinogona kuwedzerwa zvakananga kune aqueous | • Kureruka kwekupararira uye kuparara |
| pH kugadzikana | Yakagadzikana pamusoro pehupamhi hwepH hwe2.0 kusvika 13.0 | • Viscosity kugadzikana |
| Chiitiko chepamusoro | • Ita semafivhavha muine aqueous solution | • Emulsifcation |
| Kumiswa | Inodzora kugadzika kwezvimedu zvakasimba mumasisitimu ane aqueous | • Anti-kugadzirisa kweaggregate kana pigments |
| Thermal gelation | Inowanikwa kune aqueous solutions yemethyl cellulose ethers kana ichipisa pamusoro peimwe tembiricha | • Inodzoreka inokurumidza-yakaiswa zvivakwa Gels inodzokera mumhinduro pakutonhodzwa |
| Kukora | Huremu hwakawanda hwemamorekuru ekukora mvura-based system | • Range yerheological profles |
| Kuchengetedza mvura | Simba rekuchengetedza mvura mumiririri; inochengetedza mvura muhurongwa hwakagadzirwa | • Kunyatsoshanda |
Cement-Yakavakirwa Tile Adhesives
Zvigadzirwa zvedu zvinogonesa kuita kwematepi-seti madhaka kuburikidza nekuchengetedza mvura uye nepseudoplastic rheological performance. Wana hunyoro uye nyore kushanda uye kuenderana, kuchengetedza mvura yakakwira, yakagadziridzwa weti kune tile, yakanakisa kuvhura nguva uye kugadzirisa nguva, nezvimwe.
Tile Grouts
Cellulose ethers inoshanda sekuchengetedza mvura uye kumisa rubatsiro. Ziva kushanda kuri nyore, kunamatira kwakanaka kumapendero ematairi, kuderera kwakadzika, kukwira kweabrasion kuramba, kusimba kwakanaka uye kubatana, nezvimwe.
Self-Leveling Underlayments
Celulosics inopa kuchengetedza kwemvura uye lubricity kuvandudza mafambiro uye kupomba, kuderedza kupatsanura uye nezvimwe.
Madhaka eEIFS/Skim Coat
Nunura iyo yakakwana yekupedza kubata nekuvandudza kushanda, mhepo isina kugadzikana, kunamatira, kuchengetedza mvura uye nezvimwe.
Cement-Based Plasters
Nunura kuita kuri nani kuburikidza nekunatsiridza sag kuramba, kushanda, nguva yakavhurika, mhepo-void kugadzikana, kunamatira, kuchengetedza mvura, goho nezvimwe.
Gypsum-Yakavakirwa Pakuvaka Zvishandiso
Nunura iyo yaunoda yekupedzisira mhedzisiro yenzvimbo yakatsetseka, yakagadzikana uye yakasimba ine inowirirana mhando yechigadzirwa uye akakosha maitiro ekuita.
Simende uye Simende-Fiber Yakawedzerwa Zvinhu
Deredza kukwesha uye kupa lubricity kubatsira muextrusion uye mamwe maitiro ekugadzira.
Latex-Yakavakirwa Systems (Yakagadzirira-Ku-Kushandisa)
Mhando yemagiredhi e-viscosity inopa kushanda zvakanaka, kunonoka kunyungudika, nguva yakavhurika, nguva yekugadzirisa nezvimwe.
Nguva yekutumira: Nov-13-2018