Introduction about Sodium carboxymethyl cellulose.
Sodium carboxymethyl cellulose (CMC-Na) is a carboxymethylated derivative of cellulose. It is the most important ionic cellulose gum. Carboxymethyl cellulose sodium is a product of cellulose ethers with large output, wide application, and convenient use. Therefore, it is also called “industrial MSG”.
This CMC chemical is widely used in drilling mud treatment agent for petroleum industry, synthetic detergent, organic builder, textile printing and dyeing sizing agent, water-soluble colloidal tackifier for daily chemical products, tackifying and emulsifying for pharmaceutical industry agent, thickener for the food industry, adhesive for ceramic industry, industrial paste, sizing agent for the paper industry, etc. Used as a flocculant in water treatment, it mainly used for wastewater sludge treatment.
Carboxymethyl cellulose sodium has the following uses.
1. Used for oil and gas drilling, oil well drilling and other projects
- The mud containing CMC-Na can form a thin and strong low permeability membrane in the well wall. This can reduce the amount of water loss.
- After adding this CMC chemical to the mud, it can make the drilling rig get the low initial cutting force. Make the mud easy to release the gas trapped inside.
- The drilling mud is the same as other suspension dispersions. It has a certain period of existence. Adding CMC-Na can make it stable and prolong its life.
- CMC-containing mud is rarely affected by mold. Therefore, there is no need to maintain a very high pH value, nor the use of preservatives.
- Containing CMC-Na as a drilling mud washing fluid treatment agent, which can resist the pollution of various soluble salts.
- CMC-containing mud has good thermal stability. Even if the temperature is above 150 ℃, it can still reduce water loss.
2. Used in textile, printing and dyeing industry.
Sodium carboxymethyl cellulose is used as a sizing agent in the textile industry. It can be used for light yarn sizing of strong objects such as cotton, silk wool, chemical fibers, blends, etc.
3. Used in the paper industry
CMC-Na can be used as a paper surface smoothing agent and sizing agent in the paper industry. Adding 0.1%~0.3% of CMC to the pulp can increase the tensile strength of the paper by 40%~50%. Compression rupture increased by 50%. Kneading performance is increased 4 to 5 times.
4. Used in daily chemicals
Carboxymethyl cellulose sodium can be used as a dirt adsorbent when added to a synthetic detergent. The glycerin aqueous solution of CMC is used as the gum base of toothpaste. Used as thickener and emulsifier in the pharmaceutical industry. CMC aqueous solution is used as a flotation ore dressing after being thickened.
5. Used in the ceramic industry
Carboxymethyl cellulose sodium can be used as an adhesive, plasticizer, glaze suspending agent, color fixing agent, etc.
6. Used in construction to improve water retention and strength.
7. Used in the food industry
The food industry uses high-replacement CMC-Na as a thickener for ice cream, canned food, instant noodles, and foam stabilizer for beer. It is used as a thickener and adhesive in processing jams, syrups, sherbet, snacks, ice cream beverages, etc. Agent or due to shape agent.
8. Pharmaceutical industry
Sodium carboxymethyl cellulose with appropriate viscosity is selected as the binder, disintegrant, suspending agent of the suspension, etc.
Conclusion.
Because sodium carboxymethylcellulose has the functions of adhesion, thickening, strengthening, emulsification, water retention, and suspension. CMC-Na can be used as anti-fouling redeposition in detergent. Especially for the hydrophobic synthesis, the anti-fouling redeposition effect of the fiber fabric is significantly better than that of the carboxymethyl fiber.
Carboxymethyl cellulose sodium can also be used as an anti-settling agent, emulsifier, dispersant, leveling agent, and adhesive for coatings. It can make the solid content of the paint evenly distributed in the solvent. The coating will not delaminate for a long time. It is also widely used in paint.
Sodium carboxymethyl cellulose is also a kind of thickener. Because of its good functional characteristics, it has been widely used in the food industry. It has also promoted the rapid and healthy development of the food industry to a certain extent.