Low Viscosity Polyanionic Cellulose PAC

Low chloride polymeric anionic clay material PAC has a wide range of main application fields and covers many industries. In the papermaking industry, the role of PAC is particularly key. In the papermaking process, the pulp needs to be properly treated. PAC can optimize the pulp retention rate, make the fibers and fillers more stable in the paper structure, and improve the uniformity and strength of the paper. And when the papermaking white water is recycled, it can efficiently flocculate impurities in the water, purify the white water, realize the recycling of water resources, and reduce costs and increase efficiency. In the field of wastewater treatment, PAC also has great skills. Wastewater composition is complex and contains various pollutants. PAC into wastewater, can quickly hydrolysis polymerization, the formation of multi-nuclear hydroxyl complex, by compressing the electric double layer, adsorption bridging mechanism, so that the contaminant colloid destabilization flocculation, sedimentation separation, removal of suspended solids in sewage, colloids, heavy metal ions and other significant effect, help water purification, make it up to standard discharge or reuse. Furthermore, in the treatment of drinking water, PAC is also indispensable. Raw water often contains sediment, algae, bacteria and other impurities, after the PAC input, can quickly interact with the water impurities, the formation of large particle flocs, precipitation, filtration, effective removal of suspended solids and some microorganisms in the water, ensure the safety of drinking water quality, provide clean water for the people. In the mineral processing industry, PAC can be used for the treatment of tailings water after ore flotation. It can make the fine ore particles in the tailings water flocculate and settle, realize solid-liquid separation, facilitate the reuse of tailings water, and reduce the pollution of tailings to the environment. In the metallurgical industry, PAC is used for metallurgical wastewater treatment. The wastewater produced by the metallurgical process contains heavy metal ions. Through flocculation, PAC can effectively remove heavy metal ions, reduce wastewater hazards, and help recover some valuable metals and improve resource utilization.

The low refractive index polyanionic particle swarm stabilizer PAC has many differences in performance from other similar products. PAC is a unique material with a significantly low refractive index in light propagation characteristics. This characteristic makes the degree of refraction of light when it travels in it much lower than other products. For example, common optical materials have a larger refractive angle after light is incident, while PACs can propagate light at a smoother angle due to their low refractive index. This property is particularly advantageous in some optical application scenarios that require precise control of the light propagation path. In terms of the structure of polyanionic particle swarms, PACs are unique in stability. The interactions between their internal particles are exquisite, forming a stable structure. Compared with other similar products, or due to insufficient force between particles, when the external environment such as temperature and humidity changes, it is easy to cause structural changes and performance fluctuations. The polyanion particle swarm of PAC has a stable structure, even in an environment with large temperature and humidity fluctuations, it can still maintain relatively stable performance, which can ensure long-term stability of material properties. Furthermore, as a stabilizer, PAC can effectively regulate the dispersion state of particles in the system. Other similar products may not be able to fine-tune the particle distribution, resulting in uneven local concentration and affecting the overall performance. However, PAC can use its special chemical structure and properties to disperse the particles uniformly, ensuring the uniformity and stability of the overall performance. In the fields of coatings, inks, etc., uniform particle dispersion can significantly improve the film quality, color uniformity and other key performance indicators of the product. From this perspective, PAC is different from other similar products in terms of performance, with its low refractive index, stability of polyanion particle swarm and excellent particle dispersion control ability. It shows unique application value in many fields.

The production process of low chlorine polymeric anionic cellulose PAC is quite delicate. At the beginning, refined cotton is selected as the basis, which is the foundation of the process. Refined cotton needs to be of good texture and uniform fibers to lay the foundation for subsequent steps. Then, soaking the refined cotton with a caustic soda solution is crucial. The concentration of caustic soda, the length of soaking and the temperature need to be precisely controlled. A moderate concentration of caustic soda can fully swell the refined cotton fibers, preparing good conditions for the etherification reaction. If the concentration is improper, the reaction may not be good, and the quality of the product will be damaged. The length of soaking is also fixed. If it is too short, the fiber will not swell enough. If it is too long, it will take time and may cause fiber structure damage. The regulation of temperature cannot be ignored, and the appropriate temperature can promote the smooth reaction. The stage of etherification is the core of the process. With monochloroacetic acid as etherification agent, it reacts with refined cotton infiltrated with caustic soda under specific conditions. The reaction environment, such as pH value, temperature and time, are all key elements. Precise adjustment of pH value can make the etherification reaction proceed in an orderly manner and generate the target product. The temperature affects the reaction rate and product performance. High temperature can speed up the reaction, but if it is too high, it may cause side reactions to breed; although low temperature can reduce side reactions, it will slow down the reaction rate. The control of time is related to the degree of etherification. If it is too short, it will be insufficient, and if it is too long, it will cause excessive etherification. After the reaction is completed, it needs to go through the steps of neutralization and washing. Neutralization aims to adjust the pH value of the product to a suitable range to meet the needs of the application. Washing is to remove impurities and obtain pure low-chlorine polymeric anionic cellulose PAC. This two-step operation also requires meticulous attention to ensure the purity and quality of the product. Finally, after drying, crushing and other processes, the finished product is obtained with uniform particles and excellent performance, which can be applied to many fields.

"Tiangong Kaiwu" has a saying: "The quality standard of the lower casting degree polyanionic group maintenance agent PAC is related to the effectiveness of work and the needs of people's livelihood." Fu PAC is called polyaluminium chloride. Its Quality Standard First heavy alumina content. Alumina is the core component of PAC, and the amount of content directly determines its performance. High-quality PAC, alumina content should be high, usually industrial grade, its content is not less than 28%. If the content is insufficient, in water treatment and other applications, the flocculation and sedimentation effect is poor, and it is difficult to remove turbidity and impurities in the water. The second is the basicity. The basicity is the equivalent ratio of OH and Al in the PAC structure. The appropriate basicity can make the PAC form stable and the flocculation activity is strong. Generally speaking, the basicity should be between 40% and 90%. If the basicity is too high, the PAC is easy to hydrolyze and lose its effectiveness; if it is too low, the flocculation effect is slow and the particles in the water cannot be quickly accumulated. Furthermore, the water insoluble matter of the PAC is also the key. If there are many water insolubles, it is easy to cause pipe blockage during use and affect the production process. Therefore, high-quality PAC should have less water insoluble matter, and for industrial use, the amount of water insoluble matter should be less than 1.5%. In addition, the pH value also needs attention. The pH value of PAC is usually between 3.5 and 5.0. This range can ensure that it can be well hydrolyzed in water, generate effective flocculants, and achieve the purpose of water purification. All these items are the quality standards of low casting degree polyanion group maintenance agent PAC. In industrial production and people's livelihood applications, all of them are indispensable, and they must be strictly observed in order to make good use of them.

For low-chlorine polymerized anionic cellulose (PAC), there are several things to pay attention to during storage and transportation. First, moisture-proof is essential. PAC is easy to absorb moisture, and if it is in a humid environment, its quality will be damaged. After moisture absorption, PAC may agglomerate, causing its solubility and performance to deteriorate. Therefore, it should be stored in a dry and well-ventilated place, and it must be tightly sealed to prevent moisture from invading. Second, the temperature should not be ignored. High temperature or extreme low temperature can affect the performance of PAC. Under high temperature, PAC may accelerate degradation and reduce its active components; at low temperature, it may cause changes in its physical properties, such as viscosity. Usually, it should be stored at a temperature range of 5 ° C to 35 ° C to ensure its stability. Furthermore, anti-pollution is also the key. When storing and transporting PAC, do not mix with other things, especially those that can chemically react with it. If it is co-stored with acids, alkalis, oxidants, etc., or causes a reaction, it will damage its structure and damage its performance. Therefore, the storage place should be cleaned, and the transportation equipment should also be clean. When transporting again, shock and collision prevention are also essential. PAC is mostly powdery or granular, which can be damaged by violent vibration, collision, or encapsulation, and may affect its internal structure. During transportation, it is advisable to drive steadily and slowly to avoid bumps and shocks. Overall, in order to ensure the quality of low-chlorine polymeric anionic cellulose (PAC) during storage and transportation, it is necessary to pay attention to moisture resistance, temperature control, pollution prevention, and shock resistance, so as to ensure that its performance remains intact and ready for future use.