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High-Performance Sodium Naphthalene Sulfonate Formaldehyde (SNF) Superplasticizer for Concrete Admixtures1

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High-Performance Sodium Naphthalene Sulfonate Formaldehyde (SNF) Superplasticizer for Concrete Admixtures5

Sodium Naphthalene Sulfonate Formaldehyde (SNF/PNS/FDN)

Product Overview: Sodium naphthalene sulfonate formaldehyde (SNF/PNS/FDN) or named naphthalene sulfonate superplasticizer is a second-generation high-performance concrete superplasticizer synthesized from industrial naphthalene through sulfonation, hydrolysis, and polycondensation processes. It is one of the most widely used admixtures in the construction industry, offering exceptional water-reducing efficiency and strength enhancement.

Key Features & Performance Characteristics

  • High Dispersibility: Effectively breaks down cement particle flocculation, releasing free water for improved workability.
  • Early Strength Enhancement: Increases 3-day compressive strength by 40–60% compared to plain concrete.
  • Superior Water Reduction: Achieves over 25% water reduction rate, significantly enhancing concrete fluidity.
  • Reduced Bleeding & Segregation: Maintains homogeneity during transport and placement.
  • Strength Growth: Boosts early and long-term compressive strength—up to 110% increase within one day.
  • Low Sodium Sulfate Content: Prevents pipeline crystallization and blockage in winter conditions.
  • Excellent Compatibility: Works efficiently with various cement types including OPC, PPC, and slag cement.

Technical Specifications

Property Specification
Appearance Brown powder
Solid Content ≥ 92%
Sodium Sulfate Content < 5%
Chloride Ion Content < 0.3%
pH Value 7 ~ 9
Fluidity of Cement Paste ≥ 250 mm
Fineness (0.315 mm sieve) < 15%
Surface Tension (70±1) × 10⁻³ N/m

Applications

This superplasticizer is ideal for use in:

  • Ready-mix concrete as High Water Reduction
  • Precast concrete (pipe piles, blocks, panels)
  • C15–C50 grade concrete production
  • Grouts & Mortars
  • Shotcrete applications
  • Self-leveling and high-flowability concrete
  • Construction, water conservancy, transportation, port, and municipal projects
  • Gypsum board manufacturing
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Address: Zhengzhou, China


Main Product: PVC Resin , Paste PVC Resin, Titanium Dioxide, PVA Polyvinyl alcohol, PET RESIN, Iron Oxide

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