The wide application of Calcium Lignosulfonate CAS 8061-52-7

Calcium Lignosulphonate:

Calcium lignosulfonate is one of the lignin derivatives obtained from pulp industry. Its molecular structure basically retains the structural characteristics of lignin, that is, phenylpropane unit structure and a large number of bond structure, and a large number of sulfonate groups are introduced into its side chain. Therefore, when the lignin Chemicalbook calcium sulfonate is heated, some intermolecular and intramolecular condensation reactions should occur. Obviously, it is necessary to study the thermal behavior of calcium lignosulfonate and understand the changes of chemical structure and corresponding physical properties under heating conditions for the application of calcium lignosulfonate itself and its derivatives.

Calcium lignosulfonate can be used as dispersant, emulsifier, wetting agent, etc. It can be used in industrial detergents, pesticides, insecticides, herbicides, mildew agents, brick and refractory Chemicalbook materials, concrete, cement, coke and charcoal processing, dyes and pigments, casting, gypsum products, granulating processing, petroleum, electroplating bath, tanning leather, wax emulsion and so on.

Although calcium lignosulfonate is a waste produced in the papermaking process, it still has the basic structure of lignin-phenylmethylpropane derivatives, and its sulfonic acid groups make it soluble in water. Calcium lignosulfonate contains a variety of chromophore groups, and its solid powder is yellowish-brown and easily caked by moisture. Calcium lignosulfonate molecules contain a large number of active groups, such as phenol hydroxyl, carbonyl, sulfuric acid, etc. It can self-condensation or polycondensation with other substances, calcium Lignosulfonate molecular weight and functional groups are different, so it has different degrees of dispersion, can be adsorbed on the surface of various solid particles. Industrial lignin itself has the characteristics of polymers and some special properties, mainly used in water treatment agents, concrete admixtures, dye dispersants and various complexing agents, adhesives, etc.

Calcium lignosulfonate is a multi-component polymer anionic surfactant, referred to as wood calcium, and sodium lignosulfonate water reducing agent is a surfactant, a linear polymer, the appearance of brown-yellow powder, slightly aromatic odor, the average relative molecular weight of about 20000, It is made of anionic surfactant, which is processed by acidification, sulfonation and modification of wood pulp waste liquid by advanced production technology. It is connected by C-O bond and C-C chain with phenylpropane derivative as structural unit. It has supramolecular characteristics and high specific surface area, and contains a large number of functional groups. Such as phenol hydroxyl group, group, benzyl hydroxyl group, carbonyl group, carboxyl group, vinyl group, etc. Calcium lignosulfonate has strong decomposability, adhesivity and crabness, and has been widely used as pesticide filler, emulsifying dispersant, water suspension agent and suspension emulsion, concrete water reducer, cement water reducer and mold aid agent. Printing and dyeing additives, compound fertilizers, resins, leather tanning agents, mineral powder adhesives, ceramic additives, refractory plasticizers and bonding agents, casting, oil well or dam grouting gels, mineral dispersants, feed additives, coal water slurry dispersants and additives, carbon black granulation agents, asphalt emulsification chemical pesticides and other chemical deep processing fields, etc.

Calcium lignosulfonate is used as a water-reducing agent for concrete, which can adsorb and disperse cement and improve various physical properties of concrete. After adding to the concrete, the water-repellent group is directionally adsorbed on the surface of the cement particles, so that the cement has a negative charge. The cement particles with the same charge are repulsive and disperse each other under the action of charge repulsion, and the flocculent structure formed in the initial stage of cement water addition becomes a dispersive structure, and the free water in the flocculating condensate is released, so as to achieve the purpose of water reducing agent.

The main characteristics are as follows:

1. the dosage is 0.20-0.30% of the cement dosage, the common dosage is 0.25%, and the water consumption can be reduced by 8-12%.

2. without changing the amount of concrete water Chemicalbook, it can increase the fluidity of concrete, improve workability, and improve project quality.

3. In the maintenance of concrete collapse, strength and the benchmark concrete at the same time, can save cement 8-10%.

4. It has micro air induction, which can improve the freeze-thaw resistance of concrete.

5. The agent is not corrosive to reinforcement and aggregate after incorporation of concrete.

Calcium lignosulfonate superplasticizer is suitable for large volume concrete, large flow concrete, pumped concrete, commercial concrete and summer concrete construction as well as concrete with special requirements for slow setting, cast-in pile concrete, sunk pipe pile concrete, artificial dug concrete and underground mass concrete construction, generally combined with high efficiency superplasticizer.

Package and Storage:
(1) The product comes in the form of powdery.The powdery form is packed in PE/PP woven bags, 25kg/package; Jumbo bag.
(2) keep away from moisture.
(3) The product is non-flammable, non-toxic, non-explosive, and can be stored for a long time.

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