Industrial Applications

Kaolin for Adhesives

Controlling flow, preventing slump, and filling gaps for stronger bonds.

Home / Applications / Adhesives
Previous: Construction Next: Agriculture

Kaolin for Adhesives & Sealants

Adhesives and sealants need to flow easily when pumped but stay in place (not drip) once applied. This property is called thixotropy.

Darson Kaolin modifies the rheology of adhesives. Its fine platelets stack up to build viscosity at rest (preventing slump on vertical surfaces) but slide past each other under pressure (easy application). It also prevents adhesive from soaking too deeply into porous substrates like cardboard.

  • Prevents Slump & Drip
  • Controls Penetration (Holdout)
  • Lowers Formulation Cost

Gap Filling Mechanism

Substrate A Substrate B Viscosity Build-up

Kaolin builds body to bridge gaps without dripping

Performance Characteristics

High Viscosity

Increases body and texture in water-based and solvent-based adhesives.

Fast Tack

Helps improve initial grab strength, crucial for packaging glues.

Inert Chemical

Stable in starch, latex, and synthetic resin systems.

Recommended Grades

Grades for adhesive and sealant formulations — controlling rheology, reducing cost, and improving thermal and moisture resistance.

UT-WHITE High Brightness Kaolin

UT-WHITE

A functional extender for water-based adhesives and construction sealants. Its platelet morphology acts as a rheology modifier, improving sag resistance in vertical applications and reducing overall formulation cost without compromising bond strength.

SiO272.2%
Al2O313.7%
Whiteness96.6%
pH Value8.0
Oil Adsorption (g/g)0.468
Median Size (D50)4.571 μm
Particle Size400-1200 Mesh
Download Spec Sheet
UT-WASH Precision Kaolin

UT-WASH

A fine, washed grade for high-performance adhesives where low grit and consistent particle size are critical. Used in structural epoxies and pressure-sensitive adhesives to improve tack, cohesive strength, and resistance to humidity.

SiO267.6%
Al2O316.8%
Whiteness94.1%
pH Value7.6
Oil Adsorption (g/g)0.511
Median Size (D50)4.233 μm
Particle Size600-1200 Mesh
Download Spec Sheet
UT-ULTRA Premium Calcined Kaolin

UT-ULTRA

Our upcoming calcined grade for specialty industrial adhesives and thermal-interface materials. High surface area and near-zero metallic impurities improve thermal conductivity and ensure compatibility with sensitive electronic substrates.

ProcessFull Calcination
Target WhitenessExtremely High
Target QualityMedical Grade Sterile
Impurity LevelNear Zero
Primary UseThermal-Interface & Electronic Adhesives
Request Early Access

Start Your Inquiry

Factory direct pricing for local and international orders.

We will contact you back as soon as possible.

sales@darson.co.th
Nakhon Pathom, Thailand
Darson