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Wholesale 3A Activated Powder in Polyurethane Floor Glue

Table of Contents

Customer Background

3A for Polyurethane floor glue
3A activated powder adsorbing moisture is ideal for polyurethane floor glue in building chemical.

A high-end building materials company faced issues like curing bubbles and uneven adhesive strength in its two-component polyurethane floor glue. The cause was trace moisture (300–500 ppm) reacting with isocyanates, generating CO₂ bubbles. To address this, the company used 3A  activated powder for efficient dehydration—successfully resolving the problem.

Key Advantages of 3A Molecular Sieve Powder

- Precise Dehydration:

  • 3Å pore size targets water (2.8Å) without affecting polyether polyols
  • Reduces polyol moisture from 500 ppm to <50 ppm

- Chemically Inert:

  • No reaction with raw materials, no by-products
  • Neutral pH (6.5–7.5), stable curing environment

- Excellent Dispersibility:

  • Ultrafine 5–20μm particles distribute evenly
  • Static water absorption ≥22% (25°C, RH 50%)

Application Method

- Pretreatment:

Add 3% 3A activated powder to polyol, stir at 60°C for 30 min, then filter or use directly.

- Results Comparison:

Indicator                                         Untreated                                     3A Treated
Curing Bubbles                              Present                                         None
Tensile Strength                            8 MPa                                           12 MPa
Curing Time                                   6 hrs                                               4 hrs
Storage Stability                            3 months                                      12 months

Implementation Results

- Quality Boost:

  • No curing bubbles, surface flatness ≤0.2 mm/2 m
  • 50% increase in adhesion strength, meets EN 13813

- Cost Savings:

  • Replaces costly dehydration like molecular distillation
  • Only 3% addition, saving ¥800,000 annually

- Environmental Compliance:

  • No solvent use, 30% VOC reduction
  • Meets GB 18583-2008 standards
3A powder for PU adhesive

Broader Applications

Ideal for:

  • Polyurethane sealants & structural adhesives
  • Epoxy resin systems
  • Other moisture-sensitive polymers 

Technical Notes

  • Powder must be well-activated (250°C × 2h)
  • Best used with vacuum degassing
  • Test system volume changes after addition

Conclusion

3A molecular sieve activated powder offers an effective, economical, and eco-friendly solution to moisture challenges in polyurethane systems—delivering better product performance and significant cost reduction.

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