CMC Usages in Ceramic Industry

CMC Usages in Ceramic Industry

1.1 CMC Applications in Ceramic Blank


Ceramic grade CMC is used as a plasticizer, liquefacient and adhesion agent for blank. Applying proper CMC into ceramic blank can enhance the slurry fluidity, have a water-reducing effect, increase the powder production rate, reduce production energy consumption. Moreover, blank is easy to form. Mechanical strength can increase 2-3 times. It can improve the stability of the blank so that it raises the top-grade product rate, reduce late conversion cost. Meanwhile, it can form uniformly blank material during spraying and drying with big specific gravity granule and sound aggregation. Not easy to pulverize. In favor of increasing the uniformity of blank. Prevent drying and cracking. Besides, due to the good uniformity of formed blank, so.., can well control product deformation. Have a promotion effect on ensuring stable product size.


Ceramic grade CMC powder from Fortune Biotech is fine, easy to dissolve with high purity and fewer ashes after baking, which can result in good use effect to produce polishing tiles.


1.2 CMC Model Selection for Blank and Dosage


CMC dosage for the ceramic blank is 0.1%-0.5%. Can adjust properly according to actual needs. Put compounded CMC into a ball crusher to effect ball milling. Or can compound CMC into 3% aqueous solution, then ball milling with ball grinder.


Usually, use CMC model C0464 or C1074.


2.1 CMC Effects in Ground Glaze and Over Glaze


CMC is an excellent film-forming agent and color fixing agent is applied in ground glaze and overglaze of ceramic tiles. As glaze is unstable suspending liquid, easy to precipitate and thixotropic, so the use of CMC can strengthen the combining powder of glaze and blank. Besides, CMC can match with various pigment with great dispersing and protective colloid effect can make glaze at stable dispersing state. Reduce color difference from unstable glaze during production. The special binding function of CMC can bind glaze and blank firmly, reduce glaze peeling phenomenon during processing and form bright, smooth glaze which is helpful for printing. CMC has an effect of decondensation. It can increase the fluidity and concentration, reduce the water content of glaze slurry. Guard against strength decreasing arising from moisture in glaze infiltrate the blank, as well as cracking and printing brush breaking during the glaze slurry transferring process.


2.2 CMC Use Methods in Ceramic Glaze


CMC dosage in-ground glaze and overglaze is 0.1%-0.3%. Can adjust according to actual needs. Grind CMC and glaze raw materials together in a ball crusher. Or dissolve CMC firstly, then grind the solution with glaze raw materials with a ball crusher. If need to store for several days, add moderate preservative into the solution and keep in a well-sealed container at low temperature.


Can use C1074, C1083, C1082, C1092.


3.1 CMC Applications in Screen Printing Glaze


Ceramic grade CMC powder from Fortune Biotech is fine with high purity, less insoluble matters, strong suspending and dispersing functions. Good acid tolerance and salt-resistant effect. It can dissolve with various organic solutions after dissolving with water. It can make printing a glaze blending agent with different functions. Through adjustment of CMC dosage can control the binding effect of printing glaze and glaze surface. Also can control the wet and dry of printing glaze. Sound suspension property of CMC aqueous solution has to stabilize the effect on printing glaze color fixing, can reduce color aberration owing to printing.


3.2 CMC Applications in Printing Glaze


CMC dosage in screen printing glaze is 1.5%-3.0%. Can mix CMC, printing glaze and other blending agents together and put into ball crusher. Or can dissolve CMC with water and mix with other organic solvents as blending agents.


Usually can select and use C1083, C1082, C1092, C1002.