Crystalline Silica Filler for Silicone Rubber 1000–3500 Mesh
Crystalline silica filler for silicone rubber compounds, covering 1000–3500 mesh with whiteness ≥95, Mohs 7, low moisture, electrical insulation and reinforcement as the approved application focus. Confirm the compound and cure process before sampling.
Specifications
- Mesh Size
- 325mesh,400mesh,600mesh,800mesh,1250mesh,2000mesh,2500mesh,3000mesh,5000mesh,6000mesh
- Particle Size
- 3-5mm,1-3mm,1-0.5mm,0.5-0.2mm,0.1-0.2mm,0.1-0mm(120mesh),0.075mm(200mesh)
- SiO₂ Content
- 99.3-99.7%
- Fe₂O₃
- <0.015%
- Moisture
- <0.1%
- Whiteness
- 92-95
- Moh's hardness
- 7
- Specific Gravity
- 2.65g/cm³
SILICONE RUBBER · CRYSTALLINE SILICA FILLER
Crystalline Silica Filler for Silicone Rubber 1000–3500 Mesh
Crystalline silica filler for silicone rubber compounds, covering 1000–3500 mesh with whiteness ≥95, Mohs 7, low moisture, electrical insulation and reinforcement as the approved application focus. Confirm the compound and cure process before sampling.
Filler Evaluation for Silicone Rubber Compounds
This page is focused on silicone rubber compound development. The approved application description points to high whiteness, low moisture, electrical insulation and reinforcement across the 1000–3500 mesh reference. Use those points to frame a compound trial, then verify the result in the customer’s own mixing, loading and cure process.
What to Define Before Mixing
- Identify the silicone system, intended article and compound-processing route.
- Select a grade within the 1000–3500 mesh reference and review its particle-size data.
- Confirm whiteness, moisture, chemistry, hardness and density requirements.
- Set the trial checks for dispersion, handling, insulation and reinforcement in the customer’s formulation.
From Powder Selection to Compound Trial
Compare the application focus with the approved Properties and Particle Size Distribution tables. Low moisture, electrical insulation and reinforcement are source-backed evaluation directions; they should be tested at the planned filler loading and under the buyer’s cure conditions before production approval.
Crystalline Silica Properties
| Item | QG300 | QG400 | QG600 | SP10 | SP5 | SP2 |
|---|---|---|---|---|---|---|
| SiO₂ (%) | 99.3–99.7 | 99.3–99.7 | 99.3–99.7 | 99.3–99.7 | 99.3–99.7 | 99.3–99.7 |
| Fe₂O₃ (%) | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.015 |
| Al₂O₃ (%) | 0.015 | 0.015 | 0.015 | 0.02 | 0.02 | 0.02 |
| K₂O (%) | 0.005 | 0.005 | 0.005 | 0.008 | 0.008 | 0.008 |
| Moisture (%) | <0.1 for all grades | |||||
| Loss on ignition (%) | 0.15 for all grades | |||||
| Mohs hardness | 7 for all grades | |||||
| Na⁺ (ppm) | <2 | <3 | ||||
| Cl⁻ (ppm) | <5 for all grades | |||||
| EC (µS/cm) | <5 | <10 | ||||
| pH | 5.7–7.5 for all grades | |||||
Particle Size Distribution
| Grade | Particle size (μm) |
|---|---|
| QG300 | 21–24 μm |
| QG400 | 17–20 μm |
| QG600 | 15–17 μm |
| SP10 | 9–12 μm |
| SP5 | 3–5 μm |
| SP2 | 1.5–2.5 μm |
Order specification: Please confirm the silicone-rubber compound, target grade within the 1000–3500 mesh reference, whiteness requirement, packing format and destination before sampling or quotation.
Packaging and Supply for Silicone Rubber
- Standard packaging: Net Weight 25 kg per bag.
- Bulk packaging option: 1000 kg.
- Container reference: 20–25 MT per 20 ft container.
- Certification: ISO 9001.
- Country of origin: Made in China.
- Alternative packaging can be discussed according to purchasing requirements.
Information to Include in an Inquiry
- Silicone rubber system and intended article or use.
- Required grade or mesh reference and particle-size requirement.
- Whiteness, moisture or electrical-performance acceptance limits.
- Trial or production quantity, packaging preference and destination.
Silicone Rubber Filler FAQ
Silicone rubber compounds evaluated for high whiteness, low moisture, electrical insulation and reinforcement.
The product reference is 1000–3500 mesh.
Review the approved chemistry, physical properties and particle-size distribution with the compound requirements.
No. Final suitability must be confirmed against the customer’s formulation, loading and cure process.
Request a Quote for Silicone Rubber Filler
Share the silicone system, target grade or mesh, acceptance limits, quantity and destination for a formulation-based quotation.
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