The role of ceramic grade methyl cellulose sodium:
It is widely used in the ceramic industry, mainly in the glaze slurry of ceramic body, ceramic tile bottom glaze and surface glaze, printing glaze and seepage glaze. Ceramic grade chitosan cellulose CMC is mainly used as an excipient, plasticizer and reinforcing agent in the ceramic green body, which can improve the green body speed, prevent the finished product from cracking, and facilitate the green body forming;
The role of ceramic grade chitosan cellulose CMC in the glaze slurry is a binder, a suspending agent and a decoagulating agent. Adding an appropriate amount of ceramic grade methyl cellulose CMC can improve the grinding efficiency, improve the fluidity of the glaze slurry, increase the strength of the raw glaze, reduce the drying shrinkage of the glaze, and make it firmly combined with the green body without peeling off; The viscosity of methylcellulose CMC aqueous solution decreased sharply with increasing temperature. The viscosity of the glaze slurry added with antelope methyl cellulose CMC also changes with temperature, so attention should be paid to keeping the glaze slurry temperature not too fluctuating in production. In addition, the glaze slurry containing ceramic grade antelope methyl cellulose CMC has water retention, which makes the glaze layer dry evenly, the glaze surface is flat and compact, and the glaze surface after firing is smooth and smooth, and the effect is good.
The dissolution method of ceramic grade methyl cellulose:
The ceramic grade methyl cellulose is directly mixed with water to prepare a paste-like glue, and it is ready for use. When configuring the ceramic grade carboxymethyl cellulose paste, first add a certain amount of clean water into the batching tank with a stirring device, and when the stirring device is turned on, slowly and evenly mix the ceramic grade anthomethyl cellulose. Sprinkle it into the batching tank and keep stirring, so that the ceramic grade methyl cellulose and water are completely fused, and the ceramic grade antelope methyl cellulose can be fully melted. When dissolving ceramic-grade methylcellulose, the reason why it should be spread evenly and continuously stirred is to “prevent the occurrence of agglomeration and caking when ceramic-grade methylcellulose meets water, and reduce the occurrence of ceramic-grade methylcellulose. The problem of dissolving amount of methyl cellulose”, and improve the dissolving speed of ceramic grade methyl cellulose. The stirring time is not the same as the time for the ceramic grade methylcellulose to melt completely. They are two concepts. Generally speaking, the stirring time is much shorter than the time required for the ceramic grade methylcellulose to melt completely. The amount of time required depends on the specific situation.
The basis for determining the stirring time is: when the ceramic-grade methylcellulose is uniformly dispersed in the water and there is no obvious large agglomerate, the stirring can be stopped, and the ceramic-grade methylcellulose and water can be left standing. Infiltrate and merge with each other.
The basis for determining the time required for complete melting of ceramic grade antelope methylcellulose is as follows:
(1) The ceramic grade carboxymethyl cellulose is completely bonded to water, and there is no solid-liquid separation between the two;
(2) The mixed paste is in a uniform state, and the surface is smooth and smooth;
(3) The color of the mixed paste is close to colorless and transparent, and there are no granular objects in the paste. It takes 10 to 20 hours from when the ceramic grade antelope methyl cellulose is put into the batching tank and mixed with water until the ceramic grade methyl cellulose is completely dissolved.
Post time: Nov-09-2022