Fast-Setting SMF Polymer for Cement Dispersion

• Customization: Available
• Appearance: Powder
• Application: Concrete Admixture, Mortar Admixture
• Model NO.: SMF-01
• Chemical Composition: Sulfonated Melamine Formaldehyde
• Setting Time: Normal Setting Time
• Water Reduction Rate: 20%-30%
• Transport Package: 25kg/Bag
• Origin: China
• HS Code: 382440
• Production Capacity: 50000mt/Year

Product Description

Sulfonated Melamine Formaldehyde (SMF) is a high-performance, synthetic polymer-based superplasticizer widely used in concrete and mortar formulations. As a naphthalene-free alternative to traditional water reducers, SMF enhances workability, strength, and durability while reducing water content.

 

Specifications

 

Parameter	Specification
Chemical Formula	(C3H6N6·CH2·SO3Na)n (Polymer)
CAS No.	9011-05-6 (Melamine-Sulfonate)
Appearance	White/Yellowish Powder
Solid Content	≥92%
pH Value	7-9 (1% aqueous solution)
Chloride Content	≤0.1% (Low-corrosion grade)

 

Application

 

1. Precast Concrete: Enhances flowability for intricate molds.
 

2. Self-Leveling Floors: Achieves slump flow ≥600mm.
 

3. Shotcrete: Reduces rebound in wet-mix spraying.
 

4. GRC Products: Improves fiber dispersion in thin sections.

5. Underwater Concrete: Minimizes washout loss.
 

 

Our Advantages

 

-- Naphthalene-Free: Eco-friendly alternative to NSF superplasticizers.
-- Sulfate Resistance: Ideal for marine environments.
-- Compatibility: Works with PCE-based admixtures for synergy.


 

Usage Guidelines

 

• Recommended Dosage (by Cement Weight)

• Standard Concrete: 0.5-1.0%

• High-Flow Concrete: 1.0-1.5%

• Precast Elements: 0.3-0.8%

 

Package and storage

 

• Packaging: 25 kg woven bags with inner PE liner / 500 kg palletized drums.

• Storage: Keep dry (<50% humidity) at 10-30°C. Shelf life: 24 months.

 

FAQ Section

 

Q1: Can SMF be used with PCE-based superplasticizers?
---- Yes, but conduct compatibility tests to avoid over-dispersion.
 

Q2: Does SMF delay setting time?
---- Minimal effect (1-2 hrs delay for OPC). Use retarders for longer delays.
 

Q3: Is SMF suitable for hot weather concreting?
---- Yes, but consider a retarded SMF type (>4 hrs setting delay).
 

Q4: How does SMF compare to NSF superplasticizers?
---- Advantages: Better sulfate resistance, less foaming.
---- Limitations: Lower water reduction than PCE.
 

Q5: Shelf life of SMF powder?
---- 24 months in sealed, dry conditions.