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Sodium Salt Of Polynaphthalene Sulphonic Acid
"Sodium + Salt + Of + Polynaphthalene + Sulphonic + Acid" does not exist in the genus of "Tiangong Kaiwu". However, based on today's knowledge, this product is sodium polynaphthalene sulfonate salt. It has a wide range of uses and is used in many fields.
In the construction industry, this salt can be used as a concrete admixture. It can reduce water and plasticize, making concrete more workable. In this way, during construction, concrete is easy to pour, vibrate, and can enhance its fluidity, preventing easy segregation and water secretion, thereby improving the construction quality of concrete. It can also reduce the water-cement ratio, improve the strength of concrete, enhance durability, and improve the ability to resist external erosion.
In the paper industry, it is an excellent dispersant. In the manufacture of paper, the fibers need to be evenly dispersed. The sodium salt of polynaphthalenesulfonate can be adsorbed on the surface of the fiber, giving the fiber the same charge. By the force of charge repulsion, the fibers are evenly dispersed in water, resulting in better paper uniformity and improved strength.
In the printing and dyeing industry, it is used as a diffusing agent. The dye needs to be evenly dispersed in the dye solution to ensure uniform dyeing. The sodium salt of polynaphthalenesulfonate can promote the uniform dispersion of the dye, avoid the accumulation and precipitation of the dye, ensure the dyeing quality, and make the fabric uniform and bright.
Furthermore, in the field of pesticide production, it can be used Pesticides are mostly solid or liquid particles, which need to be evenly dispersed in water to make suspensions, emulsions and other dosage forms. Polynaphthalenesulfonate sodium salt can effectively disperse pesticide particles, improve the stability and efficacy of pesticides, make them easier to adhere to the surface of crops, and play the role of insect prevention and disease prevention.
What Are The Physical Properties Of Polynaphthalene Sulphonic Acid Of Sodium Salt
In the ancient words of "Tiangong Kaiwu", this is the physical property of "sodium naphthalenesulfonate". Sodium naphthalenesulfonate is often powdery in appearance, white or yellowish in color, uniform and delicate in quality. It has good water solubility, dissolves quickly in water, and forms a uniform transparent liquid. This property makes it easy to apply in many industrial fields.
When it comes to dispersion, sodium naphthalenesulfonate is exceptional. It can make solid particles evenly dispersed in the liquid phase system, inhibiting its agglomeration and sedimentation. For example, in the preparation of pigments and coatings, it can make pigment particles well dispersed, uniform in color and luster, and increase stability, preventing precipitation and agglomeration.
Furthermore, its surface activity is quite strong. It can reduce the surface tension of the liquid and increase the wettability of the liquid to the solid. In the printing and dyeing industry, it promotes the penetration of the dyeing liquid into the fabric, making the dyeing uniform and firm.
and has the ability to reduce water. Adding it to concrete can reduce water without compromising its workability, improve strength and durability. This is because the sodium salt molecule of poly naphthalene sulfonate is adsorbed on the surface of the cement particles, making them repel each other, release the wrapped water, and achieve the effect of reducing water.
And it has good chemical stability, and it is not easy to react with common chemicals under normal conditions. It can maintain its physical properties in different environments, ensuring the stable operation of many industrial processes.
Is the Sodium Salt Of Polynaphthalene Sulphonic Acid Chemically Stable?
"Tiangong Kaiwu" is a scientific and technological masterpiece written by Song Yingxing in the Ming Dynasty. Although the book does not directly mention "Sodium + Salt + Of + Polynaphthalene + Sulphonic + Acid" (sodium salt of polynaphthalene sulfonate), one or two can be inferred from the ancient people's investigation of material properties and stability.
The stability of all things depends on its composition and structure. Sodium salt of polynaphthalene sulfonate is composed of naphthalene ring, sulfonic acid group and sodium ion. The naphthalene ring has a conjugated system and its structure is relatively stable. It resembles a natural solid structure, which can ensure the stability of the molecular foundation. Sulfonic acid groups have strong hydrophilicity and acidity, and can react with many substances. However, in the sodium salt of polynaphthalenesulfonate, it is connected to the naphthalene ring, and its activity is partially constrained by the conjugation effect of the naphthalene ring. Sodium ions and sulfonic acid groups form salts, and the existence of ionic bonds also contributes to the overall stability.
Ancient theory of substances, it is often viewed in the state of environmental changes. If the sodium salt of polynaphthalenesulfonate is in a dry environment, the structure may be maintained for a long time due to ionic bonding. However, when exposed to water, the hydrophilicity of the sulfonic acid group makes the molecule easily soluble in water, and the ionic bonds will also be dissociated in water, and the stability may change. And if there are substances that can react with sulfonic acid groups in the environment, such as some basic substances, the two meet or react chemically, causing the
Considering the application of materials by the ancients, they often tried to explore their characteristics through repeated practice. If sodium naphthalenesulfonate is used in a specific process, its stability must be considered. If it is used in printing and dyeing, if its stability is not good, it will decompose or change during the dyeing process, and it may be difficult to achieve the expected dyeing effect. Therefore, the stability of sodium naphthalenesulfonate is not absolute, and it varies according to the environment and the substances it comes into contact with.
Sodium Salt Of Polynaphthalene Sulphonic Acid
Sodium poly naphthalene sulfonate, when using, many matters need to be paid attention to.
The first dose of this agent. The dosage of this agent is related to the effect and cost. If the dosage is too small, it is difficult to fully display its performance, or the work of dispersion and water reduction is not up to expectations; if the dosage is too large, not only the cost will increase, but also it may cause adverse reactions, such as abnormal concrete setting time, and it may have an adverse impact on its later strength. Therefore, the dosage must be accurately determined according to actual needs.
It is appropriate for the second time and the environment. Environmental factors such as temperature and humidity have a great impact on its effectiveness. When the temperature is high, the water evaporates rapidly, and the adsorption and dispersion effects of this agent may change, so the dosage or formula needs to be adjusted in a timely manner; where the humidity is high, the water content of the material is different from the normal, and it should also be dealt with carefully to ensure its stable performance.
Furthermore, mix evenly. During the mixing process of the material, ensure that the sodium poly naphthalene sulfonate is evenly distributed. If the mixing is uneven, the local concentration difference is too large, and the performance of some materials is difficult to meet the standard, which affects the overall quality. Therefore, it is necessary to choose suitable mixing equipment and processes to ensure the uniformity of mixing.
Also, the compatibility is careful. This agent is often used in combination with other admixtures, and the compatibility of each other needs to be carefully considered. Different admixtures may interact with each other, or enhance the efficacy, If used in combination with retarder, it is necessary to study the ratio of the two, control the setting time, and prevent the disadvantages of excessive retarding or early setting.
Repeated, good storage. Sodium polynaphthalene sulfonate should be placed in a dry and cool place, protected from direct sunlight and rain. If stored improperly, it will be damp or deteriorated, the content of active ingredients will decrease, the performance will be damaged, and the use effect will be affected.
Sodium polynaphthalene sulfonate should be used with caution in terms of dosage, environment, mixing, compatibility, and storage, so as to maximize its effect and ensure the excellent quality of materials.
Sodium Salt Of Polynaphthalene Sulphonic Acid
There are many different methods for making sodium naphthalenesulfonate. The ancient method is to take naphthalene first and sulfonate it with sulfuric acid. When naphthalene encounters sulfuric acid, a sulfonation reaction occurs, and the sulfonic acid group enters the naphthalene ring to form naphthalenesulfonic acid. This step requires temperature control to obtain the desired isomer.
Then, naphthalenesulfonic acid and formaldehyde are condensed. Formaldehyde is a condensation agent. Under appropriate acid-base conditions and temperatures, naphthalenesulfonic acid molecules are connected to formaldehyde and polymerized into macromolecules. This process also needs fine regulation, because the reaction conditions have a great influence on the structure and properties of the polymer. After condensation, it is neutralized with bases, such as sodium hydroxide, to form sodium naphthalenesulfonate.
< b In the step of sulfonation, or with a special catalyst, increase the reaction rate and improve the purity of the product. There are also those who optimize the reaction equipment and process to make the reaction more efficient and stable. Temperature control and time control techniques are also refined to achieve the purpose of homogeneous product and excellent performance. There are also those who study new raw material substitutes or compound formulas, hoping to obtain sodium poly naphthalene sulfonate with specific properties. In short, the method of making sodium poly naphthalene sulfonate is constantly changing and improving with the advancement of science and technology to meet the needs of all parties.