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Talc Powder for Adhesives and Sealants

Talc Powder for Adhesives and Sealants

Talc powder is used as a filler and extender in adhesives and sealants. It improves the mechanical properties, reduces shrinkage, and enhances the bonding strength of the adhesive. Talc powder is compatible with various adhesive types, including epoxies and polyurethane-based adhesives. It is used in numerous applications, such as construction adhesives and industrial sealants.

Talc Powder Grade and Specification

Product Code
Whiteness by Hunter Lab L* (%)
Particle size: D50, D97 (micron)
Apparent, Tapped Density (g/cc)
SiO2, MgO
Remarks
WIN7D27R (P0151007025H)
92 min.
6±2, 20±3
0.24-0.34,
0.28-0.38
60 min., 30 min.
-
WIN7D27R (P016A1007025H)
94 min.
10±2, 37±3
0.31-0.41,
0.38-0.48
60 min., 30 min.
-
WIN7A17R (P0171007025H)
96 min.
12±2, 37±3
0.27-0.37,
0.32-0.42
60 min., 30 min.
-
WIN7A17R (P0191007025H)
96 min.
6±2, 20±3
0.24-0.34,
0.30-0.40
60 min., 30 min.
-
WIN7A17R (P0301007030H)
96 min.
4±2, 15±3
0.30-0.40,
0.35-0.45
60 min., 30 min.
-
WIN7A17R (P0321007030H)
96 min.
4±2, 9±3
0.35-0.45,
0.41-0.51
60 min., 30 min.
-
WIN7A17R (P0331007030H)
96 min.
3±2, 7±3
0.24-0.34,
0.31-0.41
60 min., 30 min.
-

Properties and Benefits of Talc Powder in Adhesives and Sealants:

  1. Reinforcing Agent: The lamellar structure of talc provides excellent reinforcement, improving the mechanical strength and durability of adhesives and sealants, making them more resistant to wear and stress. 
  2. Rheology Control: Talc's influence on the viscosity and flow behavior of formulations enhances application properties, providing smooth, consistent flow and preventing sagging or dripping during application. 
  3. Thermal Stability: Talc resists high temperatures without decomposing, improving the heat resistance of adhesives and sealants used in high-temperature environments. 
  4. Chemical Inertness: Talc's chemical stability and non-reactivity with most ingredients ensure compatibility with a wide range of adhesive and sealant formulations and enhance long-term chemical stability. 
  5. Improved Bonding: Talc has excellent surface properties that contribute to adhesion, enhancing the bonding strength of adhesives and sealants to various surfaces, including metal, plastic, and wood. 
  6. Moisture Resistance: Talc reduces the permeability of formulations, enhancing water and moisture resistance, and making products more durable in humid or wet environments. 
  7. Abrasion Resistance: Talc adds toughness to formulations, improving the wear resistance of adhesives and sealants used in high-stress applications. 
  8. UV and Weather Resistance: Talc improves resistance to UV radiation and weathering, prolonging outdoor adhesives and sealants' lifespan by preventing degradation due to sunlight and environmental exposure. 
  9. Dimensional Stability: Talc minimizes shrinkage and expansion, ensuring consistent performance and appearance of adhesives and sealants over time. 
  10. Filler and Extender: Talc acts as a cost-effective filler, reducing production costs while maintaining or enhancing product performance. 
  11. Improved Surface Finish: Talc contributes to a smooth texture in formulations, providing a uniform and appealing surface finish for adhesives and sealants after application.
  12. Ease of Processing: Talc enhances the flow and mixing properties of adhesive and sealant formulations, simplifying production and improving consistency in the final product.

Finished Products in the Adhesives and Sealants That Can Incorporate Talc Powder:

  1. Construction Adhesives and Sealants:
  • Tile Adhesives
  • Grouts
  • Sealants for Windows and Doors
  • Roofing Sealants
  1. Automotive Adhesives and Sealants:
  • Structural Adhesives for Body Panels
  • Sealants for Windshields
  • Underbody Coatings
  1. Industrial Adhesives:
  • Epoxy Adhesives
  • Hot Melt Adhesives
  • Contact Adhesives
  1. Packaging Adhesives:
  • Labels and Tapes Adhesives
  • Flexible Packaging Sealants
  • Food-Safe Adhesives
  1. Woodworking and Furniture Adhesives:
  • PVA (Polyvinyl Acetate) Wood Glues
  • Edge Banding Adhesives
  • Veneer Bonding Adhesives
  1. Electronics and Electrical Sealants:
  • Potting Compounds
  • Insulating Adhesives
  • Thermal Conductive Sealants
  1. Household Adhesives:
  • Super Glues
  • Multipurpose Sealants
  • Craft and DIY Adhesives
  1. Aerospace and Defense Adhesives:
  • Heat-Resistant Sealants
  • Structural Bonding Adhesives
  • Fuel Tank Sealants
  1. Marine Adhesives and Sealants:
  • Waterproof Adhesives
  • Corrosion-Resistant Sealants
  • Deck Bonding Adhesives

Raw Materials in the Adhesives and Sealants Supply Chain That Can Incorporate Talc Powder:

  1. Base Polymers:
  • Epoxy Resins
  • Polyurethane Resins
  • Silicone Polymers
  • Acrylic Polymers
  • Rubber-Based Polymers (e.g., Natural Rubber, Styrene-Butadiene Rubber (SBR))
  1. Fillers and Extenders:
  • Calcium Carbonate
  • Silica
  • Mica
  1. Additives:
  • Rheology Modifiers
  • Anti-Sagging Agents
  • Defoamers
  • Plasticizers
  1. Curing Agents:
  • Isocyanates
  • Peroxides
  • Amines
  1. Reinforcing Agents:
  • Glass Fibers
  • Mineral Fibers
  • Carbon Black
  1. Solvents:
  • Organic Solvents (e.g., Toluene, Xylene)
  • Water (for water-based adhesives and sealants)
  1. Pigments and Colorants:
  • Titanium Dioxide
  • Iron Oxides