Polyanionic cellulose (PAC) Instructions
I）. Introduction: PAC is made from natural cotton short fibers through a complex series of chemical reactions in the system cellulose ether derivatives, is an important water-soluble anionic cellulose ether. With "three high and one low" features: high stability, high temperature resistance, high acid salt, low usage.
2）, PAC basic properties:
Physical Properties: Appearance is white, white or light yellow powder or granules, non-toxic, odorless, hygroscopic, soluble in cold water and hot water.
3）, excellent chemical properties:
1. The high degree of substitution: substitution value 0.85-1.4.
2. Heat stability: water below 80 ℃ stable performance, when the temperature can be displayed up to close to 150 ℃ certain viscosity.
3. Acid Salt: PH value stable within the range of 3-11, can be applied to various types of polar harsh environments.
4. Good compatibility: and other cellulose ethers, water soluble adhesive, softener, resin, etc. can be compatible.
5. The good solubility: using simple stirring equipment can be rapidly dissolved in cold water and hot water, dissolved in hot water faster.
6. Good stability: PAC solution with a light stability, longer shelf life; strong mildew anti-bacterial properties, not fermented.
7. The low dosage: PAC because of the high degree of substitution, high stability characteristics, in the same environment is very small amounts, generally add about 0.2% to about 0.6%, equivalent to only other cellulose ethers ( as about CMC, etc.) 30-50%, reducing the cost, with a higher price advantage.
8. Green: PAC is the main raw material for refined cotton, itself has no pharmacological effect on humans, the production process of green.
4）, PAC's purpose and effect:
Polyanionic cellulose sodium salt (PAC) is a water-soluble organic polymer, can be dissolved in water to form a transparent viscous liquid with a certain degree, can be widely used in industrial production in many areas, play a very good thickening, thickening, binding, suspension, water, emulsifying, dispersing, stabilizing role. In oil drilling, wells and other projects, PAC easily in water-based drilling fluids, including fresh water, sea water, saturated brine and other fluids can be applied, mainly for offshore drilling and land deep in the low solids drilling fluid , PAC can significantly reduce the amount of fluid loss, thinning the thickness of the cake, and the pages have a strong inhibition of the brine. Divided viscosity (HV), low viscosity (LV), medium viscosity (R) three.
5）, loaded transport and storage:
This product is a "triple play" bag lined with polyethylene film bag, net weight 25kg; stored in a cool, dry, well-ventilated place. In the storage medium, its solubility in water, avoid bulk packages, moisture does not affect use.