Products Description
JK-01NP Sodium Polynaphthalene Sulfonate(PNS) CAS NO 36290-04-7, a polymeric surfactant, primarily functions as an efficient water-reducing agent for concrete. It lowers the surface tension between water and cement particles, significantly reducing water demand while maintaining or enhancing concrete strength and workability. PNS improves concrete flow and plasticity, ensuring good performance at low water-cement ratios and contributing to increased density and durability. This material is widely used in modern construction to optimize concrete performance and construction efficiency.
Products Advantages
Exceptional Dispersing Capability
JK-01NP Sodium Polynaphthalene Sulfonate(PNS) CAS NO 36290-04-7, as a highly effective dispersant, possesses remarkable dispersing ability thanks to the sulfonate groups in its molecular structure. These groups can rapidly ionize in water, forming negatively charged ions that disperse dye particles through electrostatic repulsion, preventing agglomeration and precipitation. Compared to standard products, PNS demonstrates a dispersing force of over 90%, ensuring uniform distribution of dye particles in water, which enhances the brightness and uniformity of dye coloration.
Excellent Heat Stability
The exceptional heat stability of PNS is primarily attributed to the stability of its molecular structure and chemical inertness at high temperatures. Under high-temperature conditions, the molecular chains of PNS are resistant to breakage and do not undergo adverse chemical reactions with dyes or other additives. This stability allows PNS to maintain its dispersing performance in environments up to 130°C and beyond, without losing effectiveness due to temperature increases. Therefore, in high-temperature processes such as polyester high-temperature high-pressure dyeing, PNS ensures the stability and uniformity of dyes at high temperatures, improving dyeing quality.
Resistance to Acid, Alkali, and Hard Water
The resistance of PNS to acid, alkali, and hard water is due to the sulfonate groups in its molecules. These groups have strong ionization ability in water, forming a stable negative charge layer that resists the interference of ions in acid, alkaline, and hard water environments. In acidic or alkaline conditions, the molecular structure of PNS does not undergo significant changes due to changes in pH, maintaining stable dispersing effects. Additionally, in hard water, PNS effectively resists the interference of calcium, magnesium, and other ions, preventing precipitation or reduction in dispersing performance. This resistance to acid, alkali, and hard water allows PNS to exhibit excellent dispersing effects in various complex water conditions.
High-Efficiency Water-Reducing Performance
Apart from being a dye dispersant, PNS can also be used as an early-strength water-reducing agent for concrete. The sulfonate groups in its molecular structure can adsorb onto the surface of cement particles, forming a protective layer that reduces friction between cement particles, thereby improving the fluidity of concrete. Simultaneously, PNS promotes the hydration reaction of cement, accelerating the hardening process of concrete and enhancing its strength and durability. Experimental data shows that using PNS as a water-reducing agent can significantly reduce the water consumption of concrete and improve its compressive strength and impermeability.
Specifications
|
Items |
Sodium Polynaphthalene Sulfonate(PNS) |
|
Appearance |
Brown Powder |
|
Solid Content |
≥93% |
|
Moisture |
≤7% |
|
PH value |
7-9 |
|
Sodium Sulfate Content |
≤10% |
|
Surface Tension(mN/m) |
70±2 |
|
Chloride Content |
≤0.5% |
|
Water Reducing Rate |
17%-25% |
|
Steel-bar Corrosion |
None |
Dosage
Recommended dosage is 0.5 – 1.5% by weight of cement. Therefore, in many cases it is advisable to carry out trial mixes.
Package
For powder: Powder packed in 25kg bag/650kg/700kg jumbo bag.
Why Choose Us
Extensive Production Capacity & Customized Solutions
Located in China-Yuncheng, Shanxi Jiankai Fine Chemicals Co., Ltd boasts five production bases and a total of 20 production lines, enabling us to supply stable and high-quality chemical additives. Our "Customized Production" concept ensures tailored solutions to meet diverse industry requirements.
Commitment to Quality and Compliance
At Jiankai, quality is paramount. We implement stringent control measures from raw material procurement through to finished product inspection, ensuring all products comply with international standards. This commitment has earned us high praise and a strong reputation among both domestic and international customers.
Technological Innovation and Collaboration
We are at the forefront of technological advancement through our continuous development of new additives. By collaborating with renowned laboratories and other enterprises, we drive innovation and maintain our leadership in the chemical additives industry.
Comprehensive After-Sales Support
Our robust after-sales service system provides customers with peace of mind. We offer regular training to our internal staff to ensure they can provide practical solutions and support, reinforcing our dedication to customer satisfaction and long-term partnerships.
FAQs
Q: How should PNS be stored to maintain its efficacy?
A: PNS should be stored in a dry, cool place away from direct sunlight and moisture. Proper storage conditions help maintain its chemical stability and effectiveness when used in concrete applications.
Q: Can PNS be mixed with other concrete admixtures?
A: Yes, PNS can be combined with other admixtures, but compatibility tests are recommended to ensure synergistic effects and avoid potential chemical interactions that may affect performance.
Q: What safety precautions should be taken when handling PNS powder?
A: When handling PNS, use appropriate personal protective equipment (PPE), including gloves and masks. Avoid inhalation of dust and contact with skin or eyes. In case of accidental exposure, rinse thoroughly with water and seek medical advice if necessary.
Q: Is PNS environmentally friendly?
A: PNS is considered environmentally friendly as it complies with stringent environmental regulations. It does not release harmful substances during usage and has low toxicity levels, making it safe for use in eco-sensitive areas.
Q: How does PNS perform under high-temperature conditions?
A: PNS exhibits excellent thermal stability, maintaining its efficacy even at elevated temperatures. This makes it suitable for use in hot climates and applications requiring heat resistance.
Q: Can PNS be used in precast concrete elements?
A: Yes, PNS is well-suited for precast concrete elements due to its ability to improve workability and strength, ensuring consistent quality and performance in prefabricated components.
Q: Does PNS affect the setting time of concrete?
A: PNS can influence the setting time of concrete, typically extending it slightly. However, this effect is minimal and can be adjusted through dosage modifications to meet specific project requirements.
Q: Is there a standard dosage for PNS in concrete mixtures?
A: The recommended dosage of PNS in concrete varies depending on the desired properties and specific application. Generally, it ranges from 0.5% to 2.0% by weight of cement, but it's best to follow manufacturer guidelines or conduct trials for optimal results.
Q: How does PNS impact the carbon footprint of concrete production?
A: By reducing the amount of cement needed and enhancing the efficiency of concrete production, PNS helps lower the carbon footprint associated with concrete manufacturing, contributing to more sustainable construction practices.
Q: Can PNS be used in self-consolidating concrete (SCC)?
A: Yes, PNS is an effective admixture for self-consolidating concrete, improving flowability and fill capacity without segregation, making it ideal for complex formwork and densely reinforced structures.