Kaolin for Polymer Compounding

In advanced polymer compounds, the right mineral filler does more than reduce resin cost — it becomes part of the structural backbone. Without reinforcement, compounds suffer warpage, sagging under heat, and inconsistent surface finish.

Kaolin with a high-silica matrix and an optimized particle size distribution slots into the polymer melt to act as a reinforcing skeleton. The result is higher heat deflection, greater rigidity, and a smooth final surface — even at elevated filler loadings in PVC, PE, and engineering polymers.

Improves dimensional stability & heat deflection
Supports high filler loading without melt-flow loss
Enhances rigidity & surface finish of molded parts

Structural Reinforcement Mechanism

Kaolin platelets reinforce the polymer matrix to resist deformation

Performance Characteristics

High Heat Deflection

High-silica matrix raises the heat-deflection temperature of PVC and PE compounds.

High Filler Loading

Optimized 6.115 µm mean particle size supports heavy loading without compromising melt flow.

Smooth Surface Finish

Reinforces molded parts while keeping a uniform, defect-free surface.

Recommended Grades

Grades engineered for polymer compounding, providing structural reinforcement, dimensional stability, and a smooth surface finish in PVC, PE, and engineering polymers.

UT-WHITE

Engineered for premium aesthetics and maximum coverage. This highly refined hydrous kaolin offers an elite level of brightness that enhances color vibrancy and provides superior hiding power for high-end coatings and premium polymer compounds.

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

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Coming Soon

UT-WASH

A fine, washed grade for premium polymer compounds where surface aesthetics and zero grit are critical. Its consistent particle size distribution prevents extruder wear and surface defects in thin-wall, high-gloss, and clear-tinted compounds.

ProcessPrecision Washing

Target GritZero (0.000% on 400 Mesh)

Target WhitenessHigh (94%+)

Purity LevelLess Contamination

Primary UseCeramics & Precision Coatings

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Coming Soon

UT-ULTRA

Our upcoming calcined grade with maximum brightness and ultra-low metallic content, targeting engineering plastics and medical-grade compounds where purity, mechanical strength, and optical performance are non-negotiable.

ProcessFull Calcination

Target WhitenessExtremely High

Target QualityMedical Grade Sterile

Impurity LevelZero Contamination

Primary UseEngineering & Medical-Grade Plastics

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