01 High purity amorphous Silica
High purity amorphous silica fine powder developed as high-performance matting agents for paints and coating applications.
Silica Matting Agents
REOLOSIL™
FM Series
About
About REOLOSIL™
FM Series
02 Highly controlled particle size and aggregation structure
They have highly controlled particle size and aggregation structure.
03 Superior characteristics for matting effect
Outstanding matting effect, high transparency, and excellent dispersion
04 Various applications
Effective for various types of coating systems; Leather coatings, Wood paints, Water based paints, Plastic paints, UV paints, etc.
Applications
| Applications | Effect |
|---|---|
| Leather coatings |
Matting agent, deep black appearance, smooth and silk texture |
| Water based paints |
Matting agent, clear and very low haze surface |
| Plastic paints | Matting agent |
| Metal lacquers | Matting agent |
| UV paints | Matting agent |
Characteristics
Matting effect
Highly controlled particle size provides outstanding matting effect on the coating surfaces of liquid systems such as urethane resin, UV resin and polyacrylate emulsion.
Transparency
Delivers high transparency to the resin system because of its refractive index(1.46), which is very near to the resin(1.5).
Dispersibility
Due to its loose aggregation structure, it has excellent dispersibility in paints.
Smooth and silk texture
It is possible to form fine irregularities on the coating surface.
Examples of Additives
Test with water-based polyurethane emulsion paint
Clear paint formulation
| No. | Material | Formulation (PHR*) | Test formulation Weight (g) | Test dispersion condition (disper φ40) |
|---|---|---|---|---|
| 1 | Polyurethane emulsion | 100 | 180 |
1500rpm (sequential dosing) |
| 2 | Dilution water | 21.3 | 38.34 | |
| 3 | Defoaming agent | 0.1 | 0.18 | |
| 4 | Dispersing agent | 0.4 | 0.72 | |
| 5 | Matting agent ( REOLOSIL™ FM series) | 2〜5 | 3.6〜9 | 2500rpm×15min |
| 6 | Film-forming agent | 9 | 16.2 |
1500rpm (sequential dosing) |
| 7 | Wetting agent | 3 | 5.4 | |
| 8 | Silicone slip agent | 4 | 7.2 | |
| 9 | Cross-linking agent | 2.85 | 5.13 | |
| 10 | Defoaming agent | 0.6 | 1.08 | 2500rpm×15min |
*PHR：per hundred resin
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1.8
times
Matting effect
Test conditions
- Base material
- Black acrylic plate
- Coating condition
- Film applicator 4mil (100µm)
- Dry condition
- 100℃×20minutes
- Dry film thickness
- 18µm～20µm
- FM-14
- FM-30
- Precipitated silica
- Urethane bead
FM-30 has the same matting effect as precipitated silica.
FM-14 and FM-30 have better matting effect than urethane bead.
Transparency
Test conditions
- Base material
- Transparent glass plate
- Coating condition
- Film applicator 4mil (100µm)
- Dry condition
- 100℃×20minutes
- Dry condition
- 18µm～20µm
- FM-14
- FM-30
- Precipitated silica
- Urethane bead
FM-14 and FM-30 have better transparency than precipitated silica.
Especially FM-14 has excellent transparency.
Matting effect and Transparency
- FM-14
- FM-30
- Precipitated silica
- Urethane bead
FM-14:fine particle size (especially excellent transparency)
FM-30:middle particle size (especially excellent matting effect)
Comparison of coating appearance photos
Coating appearance（Black acrylic plate）
Test conditions
- Amount of each matting agent
- 5PHR
- Base material
- Black acrylic plate
- Coating condition
- Film applicator 4mil (100µm)
- Dry condition
- 100℃×20minutes
- Dry film thickness
- 18µm～20µm
- FM-14
- FM-30
- Precipitated silica
- Urethane bead
- Base material (Black acrylic plate)
FM-14
Base material (Black acrylic plate)
- FM-14
- FM-30
- Precipitated silica
- Urethane bead
- Base material (Black acrylic plate)
- FM-14
- FM-30
- Precipitated silica
- Urethane bead
-
Base material
(Black acrylic plate)
FM-14
FM-30
- FM-14
- FM-30
- Precipitated silica
- Urethane bead
-
Base material
(Black acrylic plate)
Coating appearance（Transparent glass plate／on Hiding power test chart ）
Test conditions
- Amount of each matting agent
- 5PHR
- Base material
- Transparent glass plate
- Coating condition
- Film applicator 4mil (100µm)
- Dry condition
- 100℃×20minutes
- Dry film thickness
- 18µm～20µm
*Photos of the coating appearance were taken by placing each transparent glass plate on a hiding power test chart.
- FM-14
- FM-30
- Precipitated silica
- Urethane bead
-
Base material
(Transparent glass plate)
FM-14
Base material (Transparent glass plate)
- FM-14
- FM-30
- Precipitated silica
- Urethane bead
-
Base material
(Transparent glass plate)
- FM-14
- FM-30
- Precipitated silica
- Urethane bead
-
Base material
(Transparent glass plate)
FM-14
Base material
(Transparent glass plate)
- FM-14
- FM-30
- Precipitated silica
- Urethane bead
-
Base material
(Transparent glass plate)
Coefficient of dynamic friction
Test conditions
- Measuring instrument
- Labthink MXD-02 (measured according to ISO 8295)
- Load
- 500g（cover load with a polypropylene film）
FM series achieve very smooth and silky surfaces. Especially FM-14 has excellent smooth surface.
Grades
- FM-14
- fine particle size (especially excellent transparency, blackness, and feel)
- FM-30
- middle particle size (especially excellent matting effect)
| Grade | FM-14 | FM-30 |
|---|---|---|
| Appearance | White powder | |
| Average particle size (Coulter Multisizer3)(µm) | 1.5-2.4 | 3.3-4.2 |
| BET surface area (㎡/g) | 215-295 | |
| Bulk density (g/L) | 50 | |
| Moisture content (Dry up)*1（%） | <8.0 | |
| Oil absorption volume(ml/100g) | 340 | |
| pH(4% suspension) | 6.0-9.5 | |
| SiO2 *2（%） | >99.8 | |
| Al（%） | <0.01 | |
| Fe（%） | <0.01 | |
| Packaging(kg) | 10 | |
This table represents typical values. NOT guaranteed.
*1: When leaving plant *2: After dry up
* The values and images are examples based on our tests and do not guarantee quality.
Contact Us
The product catalog of silica for rheology modifying can be downloaded from “Request for Information”.
Please request information on Silica Matting Agent directly through “Fumed Silica REOLOSIL™” in the “Contact Us”