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Petroleum grade CMC serves as a water-soluble colloid in the drilling mud system, composing the drilling fluid. It exhibits a high water loss control capability, functioning as a filtrate reducer. At lower dosages, it effectively controls water loss while maintaining the mud's other properties. The mud cake formed is of high quality, firm, and tough. Moreover, CMC demonstrates excellent temperature resistance and superior salt resistance. It retains its ability to reduce water loss and maintain a certain rheological behavior even at specific salt concentrations. In both brine and aqueous solutions, the viscosity remains almost unchanged. This makes it particularly suitable for the demands of offshore drilling and deep wells.
CMC has been recognized as a safe food additive by the Food and Agriculture Organization of the United Nations, with a non-toxic daily intake for humans of 0-30mg/kg. It has found widespread use as a food thickener, stabilizer, and solidifying agent, effectively extending the shelf life of various food products.
CMC serves various functions in paints, acting as an anti-settling agent, emulsifier, dispersing agent, leveling agent, and binder. It ensures even distribution of paint solids in the solvent,
In ceramic production, CMC serves as a binder, excipient, plasticizer, and reinforcing agent. Its application in ceramic glazes enhances suspension, dispersion, and color fixation. When used in printing glazes, it primarily contributes to thickening, bonding, and dispersing properties.
CMC exhibits adhesive properties to most fibers, enhancing the bond between them. The stability of its viscosity ensures uniform sizing, thereby improving weaving efficiency. Additionally, CMC finds application as a finishing agent for textiles, especially in permanent anti-wrinkle treatments, providing lasting changes to the fabric. By replacing traditional starch sizes, CMC significantly reduces environmental pollution in fabric sizing and desizing processes. Simultaneously, it forms a thin film on the fabric, offering moisture absorption, increasing fabric plasticity, and reducing issues like flushing and warp breaking on high-speed looms.
Sodium carboxymethyl cellulose (CMC) is a surfactant with hydrophilic and hydrophobic groups, serving as a highly efficient anti-sorbent adsorbent. CMC exhibits excellent thickening, dispersing, and emulsifying effects when dissolved in water. It can adsorb oil particles in oil, disperse oil suspensions in water, disperse suspended matter in oil in water, and form a hydrophilic film on the surface of the objects being washed, preventing direct contact.
Due to the pseudoplasticity of non-Newtonian fluid, CMC plays a role in forming strips and thixotropy in toothpaste. CMC's excellent acid resistance and salt resistance make it suitable for low-acid paste applications, including the use of inorganic salts. The application of CMC ensures that toothpaste does not experience phase separation or coarsening during storage.
As a binder, CMC can be widely used in different types of electrode materials such as lithium batteries, natural graphite, lithium titanate, etc. It ensures that the electrode slurry coating processing performance is superior, the layer is complete and uniform at the same time, and it can make the battery capacity, cyclic stability, cycle life to be improved to a certain extent.
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