01 High Purity
REOLOSIL™ is made from highly purified raw materials and manufactured under rigorous process control. As a result, REOLOSIL™ is an amorphous silica fine powder with extremely few impurities.
Silica for Rheology Modifying
REOLOSIL™
Hydrophilic / Hydrophobic Series
About
About the REOLOSIL™
Hydrophilic / Hydrophobic Series
02 Excellent Dispersibility
Because REOLOSIL™ is gently agglomerated, it can be finely dispersed to the aggregates smaller than light wave length (400～760nm) under optimum dispersion condition.
03 Enormous surface area
REOLOSIL™ consists of extremely fine particles with large specific surface areas on the order of 90～380m²/g and particles averaging 7～22nm in diameter. It is amorphous silica which does not have internal specific surface area because of manufactured by high temperature reaction in gas phase.
04 Surface Chemistry
Silanol groups are found on the surface of REOLOSIL™. Depending on the type of resin to be dispersed, it is possible to obtain desired thickening characteristics by separately using hydrophilic REOLOSIL™ and hydrophobic REOLOSIL™ modified with surface treatment agent.
Structure
REOLOSIL™ has a loose agglomerate structure and can be finely dispersed in paints.
Applications
By adding REOLOSIL™, thickening and thixotropic* properties are imparted, enabling both workability and anti-drip properties.
Thixotropic property: The property of temporarily reducing viscosity when an external force is applied.
Image of the Anti-Drip Effect
Characteristics
There are grades that are best suited for various usage environments (resin polarity, dispersion condition, etc.).
Resin polarity, dispersion and rheology control
Hydrophilic Series in case of low dispersion × Polar resin or high dispersion × Non-Polar resin,
Hydrophobic Series in case of medium dispersion × Polar resin or medium dispersion × Non-Polar resin
are particularly effective in thickening and thixotropic effect.
Specific Surface Area, Dispersibility and Rheology Control of Silica
1Pa･s＝10P=1,000cP
- 130 ㎡/g
- 200 ㎡/g
- 300 ㎡/g
- 380 ㎡/g
- 130 ㎡/g
- 200 ㎡/g
- 300 ㎡/g
- 380 ㎡/g
*Resin : Polyester resin *Silica addition ratio： 2.5 PHR
For low dispersion, silica with a small specific surface area,
and for high dispersion, silica with a large specific surface area
is particularly effective in thickening and imparting thixotropy.
Examples Of Additives
Examples of addition to various resins
Polyester resins
Test conditions
- Resin
- Polyester resin
- Addition ratio
- 2.5 PHR
- Dispersion condition
- Dispersion mixer 1000rpm, 3000rpm, Homo mixer 10000rpm (2 minutes each)
- Viscometer
- BLtype rotor No.4
- PM-20L
- HM-20L
- DM-20S
- QS-102
- NON-Additive
- PM-20L
- HM-20L
- DM-20S
- QS-102
The PM, HM, and QS grades are particularly effective in imparting thickening and thixotropic properties to polyester resins.
Epoxy resins
Test conditions
- Resin
- Epoxy resin
- Addition ratio
- 3 PHR
- Dispersion condition
- Dispersion mixer 1000rpm, 3000rpm, Homo mixer 10000rpm (2 minutes each)
- Viscometer
- BH type rotor No.6
- PM-20L
- HM-20L
- DM-20S
- QS-102
- NON-Additive
- PM-20L
- HM-20L
- DM-20S
- QS-102
The PM and HM grades are particularly effective in imparting thickening and thixotropic properties to epoxy resins
View other results
Close other results
Grades
Primary Particle Size
Hydrophilic
Hydrophobic
| Specific surface area (㎡/g) (before surface treatment) | |||||||
|---|---|---|---|---|---|---|---|
| 90±20 | 140±20 | 200±20 | 220±20 | 300±30 | 380±30 | ||
| Surface treatment | Untreated | QS-09 | QS-10 | QS-102 CP-102*1 |
QS-20 QS-20L*2 |
QS-30 | QS-40 |
| Monomethyltrichlorosilane | ー | MT-10 MT-10C*1 |
ー | ー | ー | ー | |
| Dimethyldichlorosilane | ー | DM-10 DM-10C*1 |
DM-20S*3 | ー | DM-30 DM-30S*3 |
ー | |
| Silicon oil A*4 | ー | ー | KS-20SC | ー | ー | ー | |
| Hexamethyldisilazane | ー | ー | HM-20L*2 | ー | HM-30S*3 | ー | |
|
Dimethyldichlorosilane + Hexamethyldisilazane |
ー | ー | ー | ー | ZD-30ST | ー | |
| Silicon oil B*4 | PM-09 | ー | PM-20 PM-20L*2 X-20*3 |
ー | X-30 | ー | |
- “CP” and “C” are grades with high bulk density.
- “L” is a grade with low bulk density.
- “S” and “X” are grades with a higher degree of surface treatment within the same treatment grade.
- Surface treated with silicone oil of different degree of polymerization, so hydrophobicity is different.
View Grade Details List
Hydrophilic Series
| Grade | QS-09 | QS-10 |
QS-102 CP-102 |
QS-20 QS-20L |
QS-30 | QS-40 |
|---|---|---|---|---|---|---|
| Appearance | White fine powder | White fine powder | White fine powder | White fine powder | White fine powder | White fine powder |
| BET surface area (㎡/g) | 90±20 | 140±20 | 200±20 | 220±20 | 300±30 | 380±30 |
| Primary particle (nm) | 22 | 15 | 12 | 12 | 7 | 7 |
| Bulk density (g/L) | 50 | 50 |
50 100 |
50 45 |
50 | 50 |
| Moisture content (Dry up,%) | <1.0 | <1.5 | <1.5 | <1.5 | <2.0 | <2.0 |
| pH(4% suspension) | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 |
| SiO2 purity (%) | > 99.9 | > 99.9 | > 99.9 | > 99.9 | > 99.9 | > 99.9 |
| Cl (ppm) | < 50 | < 50 | < 50 | < 50 | < 50 | < 50 |
| Fe (ppm) | < 20 | < 20 | < 20 | < 20 | < 20 | < 20 |
| Al (ppm) | < 20 | < 20 | < 20 | < 20 | < 20 | < 20 |
| 325 mesh Residue (%) | < 0.01 | < 0.01 | < 0.01 | < 0.01 | < 0.01 | < 0.01 |
| Packaging (kg) | 10 | 5,10 |
5,10 10,15 |
5,10 10 |
5,10 | 10 |
Hydrophobic series①
| Grade | MT-10 | MT-10C | DM-10 | DM-10C | DM-20S | DM-30 | DM-30S |
|---|---|---|---|---|---|---|---|
| Appearance | White powder | White powder | White powder | White powder | White powder | White powder | White powder |
| BET surface area (㎡/g) | 120±20 | 120±20 | 120±20 | 120±20 | 180±20 | 230±20 | 230±20 |
| Primary particle (nm) | 15 | 15 | 15 | 15 | 12 | 7 | 7 |
| Carbon content (%) | 0.9 | 0.9 | 0.9 | 0.9 | 1.6 | 1.7 | 2.2 |
| Bulk density (g/L) | 50 | 100 | 50 | 100 | 50 | 50 | 50 |
| Moisture content (Dry up,%) | < 0.5 | < 0.5 | < 0.5 | < 0.5 | < 0.5 | < 0.5 | < 0.5 |
| pH(4% suspension) | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.5 | 4.5 |
| Cl (ppm) | < 100 | < 100 | < 100 | < 100 | < 100 | < 100 | < 100 |
| Fe (ppm) | < 20 | < 20 | < 20 | < 20 | < 20 | < 20 | < 20 |
| Al (ppm) | < 20 | < 20 | < 20 | < 20 | < 20 | < 20 | < 20 |
| Packaging (kg) | 10 | 15 | 10 | 15 | 10 | 10 | 10 |
Hydrophobic series ②
| Grade | KS-20SC | HM-20L | HM-30S | HG-09 | PM-09 |
PM-20 PM-20L |
X-20 | X-30 |
|---|---|---|---|---|---|---|---|---|
| Appearance | White powder | White powder | White powder | White powder | White powder | White powder | White powder | White powder |
| BET surface area (㎡/g) | 160±20 | 150±20 | 200±20 | 65±20 | 40±20 | 100±20 | 90±20 | 115±20 |
| Primary particle (nm) | 12 | 12 | 7 | 22 | 22 | 12 | 12 | 7 |
| Carbon content (%) | 2.0 | 2.5 | 3.5 | 1.5 | 5.5 | 5.5 | 7.4 | 7.5 |
| Bulk density (g/L) | 100 | 40 | 50 | 50 | 50 |
50 40 |
50 | 50 |
| Moisture content (Dry up,%) | < 0.5 | < 0.5 | < 0.5 | < 0.5 | < 0.5 | < 0.5 | < 0.5 | < 0.5 |
| pH(4% suspension) | 5.1 | 6.0 | 6.6 | 9.2 | 5.2 | 5.2 | 5.0 | 5.3 |
| Cl (ppm) | - | - | - | - | - | - | - | - |
| Fe (ppm) | < 20 | < 20 | < 20 | < 20 | < 20 | < 20 | < 20 | < 20 |
| Al (ppm) | < 20 | < 20 | < 20 | < 20 | < 20 | < 20 | < 20 | < 20 |
| Packaging (kg) | 10 | 5 | 10 | 10 | 10 |
10 5,10 |
10 | 10 |
Close Grades Details List
* 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”