01. Hunhu hwe sodium carboxymethylcellulose
Sodium carboxymethyl cellulose i anionic polymer electrolyte. Mwero wekutsiva CMC yekutengeserana unotangira pa0.4 kusvika pa1.2. Zvichienderana nekuchena kwayo, chitarisiko chayo ipfu chena kana kuti isina kuchena.
1. Kusimba kwemushonga
Kuwanda kwemvura yeCMC kunowedzera nekukurumidza nekuwedzera kwehuwandu, uye mhinduro ine hunhu hwepseudoplastic flow. Mhinduro dzine mwero wakaderera wekutsiva (DS=0.4-0.7) dzinowanzova nethixotropy, uye kuwanda kwemvura kunoshanduka kana shear ikaiswa kana kubviswa mumushonga. Kuwanda kwemvura yeCMC kunoderera nekupisa kuri kuwedzera, uye izvi zvinodzokororwa kana tembiricha isingapfuure 50 °C. Pakupisa kwakanyanya kwenguva yakareba, CMC inoderera. Ichi ndicho chikonzero nei bleed glaze iri nyore kuchinja kuva chena uye kuora kana uchidhinda thin line pattern bleed glaze.
CMC inoshandiswa pakugadzira glaze inofanira kusarudza chigadzirwa chine mwero wepamusoro wekutsiva, kunyanya glaze inobuda ropa.
2. Mhedzisiro ye pH kukosha pa CMC
Kusimba kwemvura yeCMC kunoramba kwakajairika mune pH yakakura, uye kwakasimba pakati pe pH 7 ne9. Kana pH iine
Kukosha kunoderera, uye CMC inoshanduka kubva muchimiro chemunyu kuenda muchimiro cheasidhi, iyo isinganyungudike mumvura uye inonaya. Kana pH iri pasi pe4, munyu muzhinji unoshanduka kuita chimiro cheasidhi uye unonaya. Kana pH iri pasi pe3, chiyero chekutsiva chinenge chiri pasi pe0.5, uye chinogona kushanduka zvachose kubva muchimiro chemunyu kuenda muchimiro cheasidhi. pH kukosha kwekushandurwa kwakazara kweCMC ine chiyero chepamusoro chekutsiva (pamusoro pe0.9) iri pasi pe1. Saka, edza kushandisa CMC ine chiyero chepamusoro chekutsiva glaze inoyerera.
3. Hukama huripo pakati peCMC nemaayoni esimbi
Maion esimbi emonovalent anogona kugadzira munyu unonyungudika mumvura neCMC, izvo zvisingakanganisi viscosity, kujeka uye zvimwe zvinhu zvemushonga wemvura, asi Ag+ imhando yakasiyana, izvo zvinoita kuti mhinduro iite mvura. Maion esimbi edivalent, akadai seBa2+, Fe2+, Pb2+, Sn2+, nezvimwewo, anokonzera kuti mhinduro iite mvura; Ca2+, Mg2+, Mn2+, nezvimwewo, haana simba pamhinduro. Maion esimbi etrivalent anogadzira munyu usinganyungudike neCMC, kana kuti precipitate kana gel, saka ferric chloride haigone kukora neCMC.
Pane kusava nechokwadi pamusoro pemhedzisiro yeCMC yekushivirira munyu:
(1) Zvine chekuita nerudzi rwemunyu wesimbi, pH yemushonga uye mwero wekutsiva CMC;
(2) Zvinoenderana nekusanganiswa kweCMC nemunyu uye nzira yekusanganisa.
CMC ine mwero wepamusoro wekutsiva inoenderana zviri nani nemunyu, uye mhedzisiro yekuwedzera munyu mumushonga weCMC iri nani pane yemvura ine munyu.
CMC yakanaka. Saka, paunenge uchigadzira osmotic glaze, tanga wanyungudutsa CMC mumvura, wobva wawedzera osmotic salt solution.
02. Maitiro ekuziva CMC mumusika
Yakarongwa nerucheno
Kuchena kwakanyanya — zviri mukati zviri pamusoro pe99.5%;
Mhando yakachena yeindasitiri — zviri mukati zviri pamusoro pe96%;
Chigadzirwa chisina kuchena — zviri mukati zviri pamusoro pe65%.
Yakarongwa zvichienderana nekupenya
Rudzi rwekusviba kwakanyanya - 1% viscosity yemhinduro iri pamusoro pe5 Pa s;
Rudzi rwekusviba kwepakati - kusviba kwe2% mhinduro kuri pamusoro pe5 Pa s;
Rudzi rwekusviba kwakaderera - 2% yekusviba kwemhinduro pamusoro pe 0.05 Pa·s.
03. Tsananguro yemamodheru akajairika
Mugadziri wega wega ane modhi yake, zvinonzi kune mhando dzinopfuura 500. Modhi inowanzo shandiswa ine zvikamu zvitatu: X—Y—Z.
Tsamba yekutanga inomiririra kushandiswa kweindasitiri:
F - giredhi rechikafu;
Ini——giredhi reindasitiri;
C - giredhi receramic;
O - giredhi repeturu.
Tsamba yechipiri inomiririra mwero we viscosity:
H - kusviba kwakanyanya
M——kusviba kwepakati
L - kusviba kwakaderera.
Bhii rechitatu rinomiririra mwero wekutsiva, uye nhamba yaro yakakamurwa ne10 ndiyo mwero chaiwo wekutsiva CMC.
Muenzaniso:
Muenzaniso weCMC ndiFH9, zvinoreva CMC ine giredhi rechikafu, viscosity yakakwira uye dhigirii rekutsiva re0.9.
Muenzaniso weCMC iCM6, zvinoreva kuti CMC yegiredhi receramic, viscosity yepakati uye dhigirii rekutsiva ye0.6.
Saizvozvo, kunewo magiredhi anoshandiswa mumishonga, machira nedzimwe nzvimbo, ayo asingawanzo kuwanikwa mukushandiswa kweindasitiri yeceramic.
04. Maitiro Ekusarudza Maindasitiri Esimbi
1. Kugadzikana kwe viscosity
Iyi ndiyo mamiriro ekutanga ekusarudza CMC ye glaze
(1) Kupenya hakuchinji zvakanyanya chero nguva
(2) Kupenya kwechinhu hakuchinji zvakanyanya nekupisa.
2. thixotropy diki
Mukugadzirwa kwemataira ane glaze, glaze slurry haigone kuva thixotropic, zvikasadaro inokanganisa mhando ye glaze pamusoro, saka zvakanaka kusarudza CMC yemhando yechikafu. Kuti kuderedza mitengo, vamwe vagadziri vanoshandisa CMC yemhando yeindasitiri, uye mhando ye glaze inokanganiswa nyore nyore.
3. Teerera nzira yekuyedza viscosity
(1) Kuwanda kweCMC kune hukama hwe exponential ne viscosity, saka kutarisirwa kunofanira kupihwa kune kururama kwekuyera;
(2) Nyatsocherechedza kufanana kwemushonga weCMC. Nzira yekuyedza yakaoma ndeyekukurunga mushonga kwemaawa maviri usati wayera kusimba kwawo;
(3) Tembiricha ine simba guru pakupenya kwebvudzi, saka kutarisisa tembiricha yemhepo panguva yekuedzwa kunofanira kupihwa;
(4) Nyatsoteerera kuchengetedzwa kwemushonga weCMC kudzivirira kuora kwawo.
(5) Nyatsocherechedza musiyano uripo pakati pekusimba uye kusimba.
Nguva yekutumira: Ndira-05-2023