60% Min Sodium Lignosulfonate Concrete Admixture HS3804000090 Brown Powder

Sodium Lignonsulphonate:

Lignin is a complex phenolic polymer composed of four alcohol monomers (p-coumarin, coniferol, 5-hydroxyconiferol and sinapol), which is widely present in plant woody tissues. It is one of the components of plant cell wall, and its main function is to harden the cell wall by forming interwoven webs, and it is the main component of secondary wall. Lignin itself is not soluble in water, and it needs to be sulfonated (sulfite) and alkalized (OH) to dissolve in water. Lignosulfonate (such as sodium lignosulfonate, calcium lignosulfonate, etc.) is prepared by the process of sulfonation, condensation, transformation and desugar.

The properties of lignosulfonates made from different raw materials are different. Compared with the lignin sulfonate made from wheat grass, the lignin sulfonate made from trees has higher molecular weight and better dispersion. The size of the molecular weight of lignosulfonate depends on the raw material itself and the subsequent chemical modification. Under the same degree of sulfonation, the larger the molecular weight, the better the dispersion and suspension, because the larger the molecular weight, the greater the steric hindrance effect, which can prevent the lower layer or transfer of the original drug. The degree of sulfonation refers to the ratio of sulfonic acid group and total molecular weight, some units with millimolar gram ratio, the main reaction of the degree of sulfonation of lignin, the better the sulfonation, the better the water solubility, the high degree of sulfonation of lignosulfonate regardless of acid and base are dissolved well. If the degree of sulfonation is low, the solubility is certainly poor, and some cheap lignosulfonates also contain a lot of alkaline lignin, which affects the solubility of the lignin. Therefore, lignin with a high pH value has poor dispersibility because of its high alkaline lignin content.

Sodium lignosulfonate has the following uses:

1, mainly used as cement water-reducing agent, so that the group cement diffusion, water analysis, increase its fluidity. Thus reduce mixing water and save cement. When used for oil drilling mud formulation, it can effectively reduce mud viscosity and shear force, so as to control the flow of drilling mud, keep the inorganic soil and inorganic salt impurities suspended in drilling, prevent mud flocculation, and has excellent salt resistance, calcium resistance and high temperature resistance. Lignosulfonate is a natural polymer with a molecular weight of 1000 ~ 30000. It is produced by the waste liquor of the pulp fermentation extracted alcohol, and then neutralized with alkali, mainly calcium lignosulfonate, sodium lignosulfonate, magnesium lignosulfonate, etc., of which the most widely used calcium Lignosulfonate is made of sulfite pulp waste. This kind of water reducing agent raw materials are rich in sources, simple manufacturing process, low price, and more common in domestic application, accounting for about 80% of the total production of water reducing agent. However, its effect is not good, it has the effect of entraining air and retarding coagulation, it is a common water reducer, and the composite use of early strength agent has a better effect.

2, used as concrete water-reducing agent, oil drilling mud dispersant, printing and dyeing diffusion agent. Used as concrete water reducer, oil drilling mud dispersant, printing and dyeing diffusion agent.

3, refractory ceramic body reinforcement agent: in the manufacturing process of large walls and refractory bricks, the raw material particles of the body can be firmly bonded, and the dry strength of the body can be increased by more than 20%-60%.

4. Fillers and dispersants for dye industry and pesticide processing: when used as dispersants and fillers for VAT dyes and disperse dyes, the color power of dyes can be increased, the color is more uniform, and the grinding time of dyes can be shortened; It can be used as filler, dispersant and suspension agent in pesticide processing, which greatly improves the suspension rate and wettability of wettable powder.

5, as a binder for powdery and granular materials: used for iron ore powder, lead-zinc ore powder, coal powder, coke powder pressure ball; Pressing of cast iron and steel sand mold; Mud brick wall floor tile extrusion molding; Good results such as high strength, good stability and good lubrication mold can be obtained in ore pelleting.

6. Used as diluent dispersant and viscosity reducer in drilling; Improve the flow of crude oil and reduce energy consumption. It is used in petroleum products as cleaning agent, dispersant, high alkaline additive, anti-rust agent, antistatic agent, emulsifying viscosifier, dewaxing and anti-waxing agent.

agent in pesticide processing, which greatly improves the suspension rate and wettability of wettable powder.

Packaging and storage

1. Powder products are made of chemical fiber woven bags, lined with plastic film bags, each bag net weight (40±0.2kg) or (25±0.2kg) or (750±0.2kg), can also be customized according to customer requirements.

2. Powder products should be stored in dry and ventilated special warehouse, products such as damp caking can be crushed or dissolved into water agent use does not affect the actual effect.

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