01. Zvinhu zve sodium carboxymethylcellulose
Sodium carboxymethyl cellulose is anionic polymer electrolyte.Iyo dhigirii yekutsiva yekutengeserana CMC inotangira pa0.4 kusvika 1.2.Zvichienderana nekuchena, chitarisiko chichena kana chisina-chena poda.
1. Iyo viscosity yemhinduro
Iyo viscosity yeCMC aqueous solution inowedzera nekukurumidza nekuwedzera kwekunzwa, uye mhinduro ine pseudoplastic kuyerera maitiro.Mishonga ine dhigirii yakaderera yekutsiva (DS = 0.4-0.7) kazhinji ine thixotropy, uye inooneka viscosity inoshanduka kana shear ichiiswa kana kubviswa kune mhinduro.Iyo viscosity yeCMC aqueous solution inodzikira nekuwedzera tembiricha, uye izvi zvinodzokororwa kana tembiricha isingapfuure 50 °C.Pakupisa kwepamusoro kwenguva yakareba, CMC inodzikisira.Ichi ndicho chikonzero nei kubuda ropa kupenya kuri nyore kushanduka kuchena uye kushata kana uchidhinda nhete mutsara pateni inobuda ropa glaze.
Iyo CMC inoshandiswa kupenya inofanira kusarudza chigadzirwa chine dhigirii yakakwira yekutsiva, kunyanya kubuda kweropa.
2. Mhedzisiro yepH kukosha paCMC
Iyo viscosity yeCMC aqueous solution inoramba iri yakajairika muhupamhi pH renji, uye yakanyanya kugadzikana pakati pepH 7 ne9. Iine pH
Kukosha kunodzikira, uye CMC inotendeuka kubva mumunyu kuita fomu yeasidhi, iyo isinganyungudika mumvura uye inonaya.Kana iyo pH kukosha iri pasi pe4, yakawanda yemunyu fomu inoshanduka kuita asidhi fomu uye inonaya.Kana iyo pH iri pasi pe3, dhigirii yekutsiva ishoma pane 0.5, uye inogona kushanduka zvachose kubva mumunyu fomu kuenda kuasidhi fomu.Iyo pH kukosha kwekushandurwa kwakakwana kweCMC nehupamhi hwekutsiviwa (pamusoro pe0.9) iri pasi pe 1. Nokudaro, edza kushandisa CMC nehupamhi hwekutsinhanisa kune seepage glaze.
3. Ukama pakati CMC uye simbi ions
Monovalent metal ions inogona kuumba salt-soluble salts neCMC, iyo isingakanganise viscosity, pachena uye zvimwe zvimiro zvemushonga wemvura, asi Ag + inosarudzika, iyo ichaita kuti mhinduro iwedzere.Divalent metal ions, yakadai seBa2+, Fe2+, Pb2+, Sn2+, nezvimwewo zvinokonzera kuti mhinduro iwedzere;Ca2 +, Mg2 +, Mn2 +, nezvimwewo hazvina simba pane mhinduro.Trivalent simbi ions inoumba munyu usinganyungudika neCMC, kana mvura inonaya kana gel, saka ferric chloride haigone kukora neCMC.
Pane kusavimbika mukushivirira munyu mhedzisiro yeCMC:
(1) Inoenderana nerudzi rwesimbi munyu, iyo pH kukosha kwemhinduro uye dhigirii rekutsiva CMC;
(2) Iyo ine hukama nekusanganiswa kurongeka uye nzira yeCMC nemunyu.
CMC ine yakakwira dhigirii yekutsiva ine zvirinani kugarisana nemunyu, uye mhedzisiro yekuwedzera munyu kuCMC mhinduro iri nani pane yemvura yemunyu.
CMC yakanaka.Naizvozvo, kana uchigadzira osmotic glaze, kazhinji nyungudutsa CMC mumvura kutanga, wozowedzera osmotic munyu mhinduro.
02. Nzira yekuziva CMC mumusika
Inorongwa nekuchena
High-kuchena giredhi - zvirimo zviri pamusoro 99.5%;
Industrial pure giredhi - zvirimo zviri pamusoro pe96%;
Crude product - zvirimo zviri pamusoro pe65%.
Yakarongedzwa ne viscosity
High viscosity type - 1% solution viscosity iri pamusoro pe5 Pa s;
Medium viscosity type - iyo viscosity ye2% mhinduro iri pamusoro pe5 Pa s;
Low viscosity type - 2% solution viscosity pamusoro pe 0.05 Pa · s.
03. Tsanangudzo yemhando dzakajairika
Mugadziri wega wega ane modhi yake, zvinonzi kune anopfuura mazana mashanu marudzi.Muenzaniso unozivikanwa zvikuru une zvikamu zvitatu: X—Y—Z.
Tsamba yekutanga inomiririra kushandiswa kweindasitiri:
F - giredhi rekudya;
Ini——giredhi remaindasitiri;
C - ceramic giredhi;
O - petroleum giredhi.
Tsamba yechipiri inomiririra viscosity level:
H - high viscosity
M——pakati viscosity
L - yakaderera viscosity.
Tsamba yechitatu inomiririra dhigirii rekutsiva, uye nhamba yaro yakakamurwa negumi ndiyo dhigirii chaiyo yekutsiva CMC.
Muenzaniso:
Modhi yeCMC ndeye FH9, zvinoreva kuti CMC ine giredhi rekudya, high viscosity uye dhigirii rekutsiva re0.9.
Muenzaniso weCMC iCM6, zvinoreva kuti CMC yegiredhi receramic, yepakati viscosity uye dhigirii rekutsiva re0.6.
Saizvozvo, kune zvakare mamakisi anoshandiswa mukurapa, machira uye mamwe maindasitiri, ayo asingawanzo kusangana mukushandiswa kweindasitiri yeceramic.
04. Ceramic Industry Selection Standards
1. Viscosity kugadzikana
Iyi ndiyo yekutanga mamiriro ekusarudza CMC ye glaze
(1) Viscosity haina kuchinja zvakanyanya chero nguva
(2) Viscosity haina kuchinja zvakanyanya nekushisa.
2. Diki thixotropy
Mukugadzirwa kwematairi akapenya, iyo glaze slurry haigone kuva thixotropic, zvikasadaro ichakanganisa kunaka kweiyo glazed pamusoro, saka zviri nani kusarudza chikafu-giredhi CMC.Kuti uderedze mutengo, vamwe vagadziri vanoshandisa maindasitiri-giredhi CMC, uye glaze mhando inokanganiswa nyore.
3. Teerera kune viscosity test nzira
(1) Iyo CMC yekumisikidza ine exponential hukama neiyo viscosity, saka kutarisisa kunofanirwa kubhadharwa kune kurongeka kwekuyera;
(2) Teerera kune kufanana kweiyo CMC mhinduro.Iyo yakasimba yekuedza nzira ndeyekumutsa mhinduro kwemaawa maviri isati yayera viscosity yayo;
(3) Tembiricha ine simba guru pane viscosity, saka kutarisisa kunofanirwa kubhadharwa kune ambient tembiricha panguva yekuedzwa;
(4) Teerera kuchengetedzwa kweCMC mhinduro kudzivirira kuparara kwayo.
(5) Teerera pamusiyano uripo pakati peviscosity uye kuenderana.
Nguva yekutumira: Jan-05-2023