This high-strength polyurethane adhesive is engineered for modular construction applications, providing exceptional adhesion for large panels on diverse substrates like concrete, steel, and foam. It ensures rapid curing and maintains outstanding load-bearing capacity under dynamic stress, improving the structural integrity of assemblies.
Technical Specifications
pH Level: 7.0 - Neutral
Shelf Life: 12 months in closed containers at 5-25°C
Batch Size: 1000 kg
Processing Time: Approximately 2 hours including mixing and quality checks
Temperature: Mixing at 25-30°C; Final processing at 20°C
Storage: Store in a cool, dry place with humidity under 50%, away from direct sunlight and freezing conditions.
Viscosity: 6,000 - 8,000 cps at 25°C
Certification: ISO 9001 Production Standards, ASTM D3498 Compliance
Ingredients
Ingredient
Percentage
Function
Polyurethane Prepolymer
72.0%
Primary structural binder providing strength and elasticity
Methylene Diphenyl Diisocyanate
18.0%
Reacts with hydroxyl groups to form polyurethane linkages
Fillers
5.0%
Enhances viscosity and dimensional stability
Additive
2.0%
Improves adhesion to diverse substrates
Plasticizer
2.5%
Increases flexibility and ease of application
Catalyst
0.5%
Accelerates cure rate of polyurethane matrix
Manufacturing Process
Pre-Polymer Mixing Phase
In a high-shear mixer, maintain a temperature of 25-30°C.
Add Polyurethane Prepolymer and start stirring at 500 RPM.
Introduce Methylene Diphenyl Diisocyanate slowly over 15 minutes.
Filler and Additive Integration
Gradually incorporate Calcium Carbonate and Silane Coupling Agent at 700 RPM.
Ensure homogeneity for 30 minutes, monitoring viscosity at intervals.
Final Mixing and Quality Control
Lower temperature to 20°C and add Dioctyl Phthalate and Dibutyltin Dilaurate.
Mix thoroughly for 20 minutes, ensuring dispersion.
Conduct viscosity and adhesion tests to confirm specific standards.
Usage Instructions
Apply a uniform bead to the substrate. Press firmly within 3 minutes for optimal adhesion. Recommended usage: 150-200 g/m².