Part 1: Product Overview

Wet-process mica powder, also known as wet-ground mica powder, is a high-quality mineral filler produced from high-quality flaky mica raw materials through a series of wet processes including water washing, impurity removal, soaking, roller milling, low-temperature drying, and precise classification.

Unlike the traditional dry process, the wet process uses water as the medium for grinding and exfoliation, which maximally preserves the natural flaky structure, large aspect ratio, and high gloss of mica crystals. Our wet-process mica products feature a smooth surface, pure texture, intact crystal planes, large aspect ratio (up to 60–100 times), and concentrated particle size distribution - outstanding advantages that make it a high-end filler unparalleled by dry-process mica powder.

Part 2: Core Advantages & Properties

Complete Flaky Structure & Large Aspect Ratio

The wet process uses water as the medium for mild grinding, resulting in no tearing, no perforation, and no abrasion damage on the surface of mica flakes. The aspect ratio (ratio of diameter to thickness) can reach 60–100 times, much higher than approximately 10 times for the dry process. This feature enables an excellent parallel arrangement in the matrix, significantly improving the barrier properties and mechanical strength of finished products.

High Purity & Low Impurity Content

The wet process includes multiple purification steps such as water washing, impurity removal, and cyclonic classification, effectively removing associated impurities including quartz, feldspar, and iron. The product purity reaches over 99.5%, with stable chemical composition, and its whiteness is more than 10% higher than that of dry-process products.

Smooth Surface & High Gloss

The crystal surface remains undamaged, retaining natural cleavage luster, smooth hand feel, and strong adhesion. It provides unique luster and a silky touch in high-grade coatings and cosmetics.

Good Dispersibility & Suspension Stability

It exhibits excellent dispersibility and suspension stability in both aqueous and oil-based systems, with low sedimentation, facilitating processing and application.

Safe & Eco-Friendly

Non-toxic, harmless, odorless, and free of radioactive elements, meeting stringent requirements for cosmetics and food-contact materials.

Wet-Process Mica vs. Dry-Process Mica

Item	Wet-Process Mica Powder	Dry-Process Mica Powder
Flaky Structure	Intact and smooth crystal planes	Prone to tearing, perforation, and surface abrasion
Aspect Ratio	60–100 times	Approx. 10 times
Purity	>99.5%, low impurity content	Relatively low, with associated minerals
Whiteness	High, over 10% higher than dry-process	Relatively low
Surface Gloss	Strong pearlescent luster, smooth hand feel	Poor gloss

Part 3: Main Application Fields

With its excellent flaky structure and surface properties, wet-process mica powder has become an indispensable functional filler in high-end manufacturing.

1. Pearlescent Pigments (Core Application)

Wet-process mica powder is the preferred substrate for manufacturing mica-titanium pearlescent pigments. Its smooth and intact crystal planes provide an ideal surface for coating metal oxides such as titanium dioxide, resulting in pearlescent pigments with stronger luster, purer color, and higher color strength.It is widely used in automotive coatings, high-grade inks, plastic decorations, cosmetic packaging, etc.

2. High-Grade Coatings & Paints

Anticorrosive Coatings

Wet-process mica powder arranges in parallel in the paint film, creating a "labyrinth effect" that significantly improves impermeability, weather resistance, and corrosion protection, extending coating service life.

Architectural Coatings

Used in interior and exterior latex paints, textured coatings, etc., to improve scrub resistance, crack resistance, and adhesion while providing soft pearlescent luster.

Automotive & Marine Coatings

In metal protective coatings, it can partially replace zinc powder and aluminum powder, enhancing protection while delivering a smoother finish and richer color.

3. Plastic Reinforcement & Modification

Adding wet-process mica powder to engineering plastics (e.g., PA66, PP, ABS, PBT) significantly improves toughness, heat resistance, rigidity, and dimensional stability, with better reinforcement than other inorganic fillers. Applications include automotive parts (dashboards, door panels, thermal valve housings), electrical components, sanitary ware, etc.

4. Cosmetics

Wet-process mica powder is an ideal raw material for high-end cosmetics. Pure, non-toxic, smooth, highly adhesive, and naturally lustrous, it is widely used in eye shadow, pressed powder, blush, lip gloss, nail polish, etc. It provides vibrant color and a silky texture while offering UV shielding effects.

5. Rubber & Insulation Materials

Used as a release agent and anti-blocking agent in rubber tire manufacturing to prevent adhesion between inner and outer tires.

In cable production, it improves insulation performance and prevents sheath hardening and core adhesion.

6. Fine Chemicals & Other Applications

Used as a coating auxiliary for welding electrodes to improve extrusion performance and arc stability.

Applied in unsaturated polyester products such as shower enclosures, bathing units, and tank liners.

Specifications

SiO₂ content	45～60%
Fe₂O₃ content	0.5–2%
Al₂O₃ content	20～33%
Alumina content	18–30%
CaO content	0.02～0.07%
K₂O content	8–12%
Country of Origin	Hebei, China
Applications	Building materials, coatings, chemicals, industry, rubber & plastics
Specification	100–600 mesh
Oil Absorption Value	40