Sodium naphthalene sulfonate formaldehyde (SNF), also known as SNF superplasticizer, naphthalene based superplasticizer, sodium naphthalene, naphthalene sulfonate, poly naphthalene sulfonate (PNS), sodium naphthalene formaldehyde, sulphonated naphthalene formaldehyde (SNF), naphthalene sulfonate formaldehyde (NSF),etc. The sodium naphthalene sulfonate is a derivative of sulfonic acid containing naphthalene functional group, which belongs to the naphthalene series superplasticizer. It not only has a strong dispersing effect on cement particles, but also has a high water reduction rate for concrete.Therefore, it is widely used in the construction industry. Besides, it is also highly utilized in various industries such as agriculture, plastics and rubber, papermaking, textiles and petroleum, etc.
Kingsun Sodium Naphthalene Sulfonate (SNF)
Sodium naphthalene sulfonate (SNF) is a light yellow to yellow-brown powder, and it is easily soluble in water, ethylene glycol, diethylene glycol, slightly soluble in alcohols, and insoluble in organic solvents. In construction industry, SNF is widely used to prepare free-flowing and pumpable concrete mixtures. As a leading manufacturer in China, Kingsun naphthalene sulfonate powder for sale has three types, they are SNF-A, SNF-B, SNF-C. And they all have different technical specifications (as shown in the table below).
|Solid Content (%) ≥||92%|
|Na2SO4 Content (%)≤||5||10||18|
|Chlorine Content (%)≤||0.3||0.4||0.5|
|Net Starch Fluidity(mm)≥||250||240||230|
|Water Reducing Rate(%)||26||25||23|
|Packing||25kg pp bag; 650kg Jumbo bag. A customized package is available.|
The Main Features of Sodium Naphthalene Sulfonate Formaldehyde
- Reduce cement dosage. If the concrete strength and slump are basically the same, cement consumption can reduce by 10-25 %.
- As a kind of high range water reducer, naphthalene sulfonate formaldehyde can improve the water reducing rate. When the water-cement ratio is constant, the initial slump of concrete can increase by more than 10 cm, and the water-reducing rate can reach 15-25%.
- The early strength of concrete. As long as using it, the strength of concrete can increase by 20-60%.
- Improving the workability of concrete. Adding SNF powder to concrete can not only save the amount of cement, improve the workability of concrete, but also speed up the construction progress.
- Good adaptability. Sodium naphthalene formaldehyde has good adaptability to many types of cement, moreover, it is compatible with other types of concrete admixtures.
- Safety. Non-irritating or radioactive, non-dangerous.
- The use of sodium naphthalene has obvious technical effects and economic benefits.
- Suitable for many types of cement. Such as Portland cement, ordinary Portland cement, Portland slag cement, Portland fly ash cement, etc.
- It has a good effect on preparing a variety of concretes. For example, high-strength concrete, high-performance concrete, steamed concrete, large-fluid concrete, pumped concrete, etc. Of course, it is also particularly suitable for concrete construction in winter.
- SNF has been widely used in highways, bridges, tunnels, water conservancy and hydropower projects, ports, docks, skyscrapers, power engineering, industrial and civil buildings, prestressed components, etc.
- SNF powder can be used directly, or the cement aggregate can be fully moistened with 60% mixing water before adding it.
- When using porous aggregate, in this case, you should add water first, and then add SNF superplasticizer.
- When the slump is large, the vibrating time should not be too long to prevent bleeding and stratification.
- It can be used when it is prepared into a solution of the required concentration.
- When concrete needs to be transported for a long time or a mixer truck is used, it is a good method to mix the concrete with sodium naphthalene sulfonate before use.
- It has good adaptability with other concrete admixtures. For example, it can be widely used as a composite auxiliary agent composition, formulated into special functional auxiliary agents, such as pumping agents, waterproofing agents, air-entraining water-reducing agent additives, antifreeze, etc.
- Prevent damp and caking. When SNF powder becomes damp and agglomerates, it must be dissolved in hot water first, and then added together with the concrete mixing water, and the moisture must be deducted.
- The content of Na2SO4 (3%-19%) within a certain range can improve the fluidity of cement paste. But if it exceeds this range, the fluidity of concrete will drop sharply.
- Generally, under the premise of a certain amount of water reducing agent, adding Na2SO4 can increase the early strength of concrete, but after 28d, its strength growth rate will decrease.
- When the content of Na2SO4 in SNF superplasticizer is increased, it can improve the fluidity of cement paste, the compressive and flexural strength of concrete, chloride ion penetration resistance and carbonization resistance. However, it may adversely affect the shrinkage and deformation properties of concrete.
- If the Na2SO4 content is increased in a lower range, the ability of the concrete to resist carbonization and chloride ion penetration can be improved.
- If excessive Na2SO4 is added to SNF, this will increase the alkali content in the concrete, accelerate the hydration, hardening and loss of water of the cement slurry, resulting in greater restraint stress and weakening the crack resistance.
sodium Naphthalene Sulphonate Manufacturer in China
As one of the most professional concrete admixtures manufacturers & suppliers in China, Henan Kingsun Chemical Co., Ltd. has focused on researching and producing various types of water reducing admixtures for more than 15 years. These conrete admixtures mainly include high range concrete superplasticizers (sodium naphthalene sulphonate, polycarboxylate superplasticizer and other superplasticizers), ordinary water reducing agents (sodium lignosulfonate and calcium lignosulfonate), concrete retarder (sodium gluconate). By the way, if you are interested in these chemicals or get the latest price list, please contact us online at any time!
There are several advantages of Kingsun company
- Firstly, We have our own factory, R&D and sales team. We now have over 600 employees, including more than 300 employees with senior titles, high technology, and professionalism. Because of advanced science and technology, a high level of management team, advanced detection and testing device, Kingsun is certificated as AAA Enterprise, Top 100 enterprises of China Light Industry, etc.
- Second, Kingsun products has been exported to around 60 countries and regions, they are Mexico, Israel, Qatar, Bahrain, Pakistan, Chile, Brazil, Turkey, Saudi Arabia, UAE, South Africa, Jordan, Russia, Peru, Bangladesh, South Korea, Indonesia, Thailand, Philippines, Vietnam, Malaysia, Singapore, India, etc. And most importantly, our company has established a long-term and friendly cooperative relationship with many foreign and new customers. At the same time, our brand “Kingsun” also enjoys a good appetite in the domestic and foreign markets.
- Third, All of our products have passed many product certificates, for example, ISO9001 quality management system, ISO14001 environmental management system, OHSAS18000 occupational health, and safety management system, etc. So the quality of our products can be guaranteed.
- At last, Kingsun always provides the factory sales prices and good services for all the customers. If you would like to know the naphthalene superplasticizer price, please feel free to contact us. We will reply to your message as soon as possible.