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Precipitated Silica Powder 3-5μ M Silicon Dioxide at Best Price
Basic information:
Precipitated silica is a porous substance, and its composition can be expressed by SiO2 * nH2O, where nH2O exists in the form of surface hydroxyl groups. Soluble in NAOH and HF, insoluble in water, solvents and acids (except HF). High temperature resistance, non-flammable, tasteless, odorless, with good electrical insulation.
| Items | Specification | Results | Inspection Standard |
| SiO2 Content (%) | ≥ 98.0 | 98.92 | HG/T3062-2008 |
| Particle Size (μm) | 3.0-5.0 | 4.26 | HG/T3063-2008 |
| PH value | 6.0- 8.0 | 6.92 | HG/T3067-2008 |
| Loss on drying (%) | 5.0-7.0 | 5.84 | HG/T3065-2008 |
| Loss on ignition (%) | 4.0-6.0 | 4.21 | HG/T3066-2008 |
| Specific Surface Area (m2/g) | 100-300 | 196.35 | GB/T10722-2003 |
| Residue On Sieve (325mesh) | ≤ 0.5 | 0.10 | HG/T3064-2008 |
| DBP Absorption (cm3/g) | 2.0- 3.0 | 2.52 | HG/T3072-2008 |
| Fe Content (mg/kg) | ≤ 150 | 129.28 | HG/T3061-2008 |
Application:
In the resin matrix composite material, the white carbon black particles can be fully and evenly dispersed into the resin material, which greatly improves the strength, toughness and ductility of the epoxy resin material, improves the wear resistance and improves the finish of the material surface, and improves the anti-aging performance. To achieve the purpose of improving the properties of resin based materials.
In the plastics industry, the use of white carbon black light transmission, small particle size, can make plastics more dense. It not only improves its transparency, strength and toughness, but also significantly improves its waterproof performance, anti-aging performance, hardness and finish.
In the rubber industry, it is usually necessary to add carbon black to the rubber material to improve strength, wear resistance and aging resistance, but because of the addition of carbon black, the products are black. For example, after adding a small amount of nano white carbon black to ordinary rubber, the strength, wear resistance and anti-aging properties of the product reach or exceed that of high-grade rubber products, and the color can be kept unchanged for a long time.
In the coating industry, nano-carbon black modified coatings have changed the shortcomings of previous products, and greatly improved such as poor suspension stability, poor thixotropy, poor weather resistance, poor wash resistance.
In the pigment and dye industry, it can overcome the shortcomings of organic pigments (dyes) although they have bright colors and strong coloring power, they are generally light resistant, heat resistant, solvent resistant and migration resistant.
The ability of white carbon black to reflect ultraviolet light is strong, good stability, after being irradiated by ultraviolet light does not decompose, does not change color, and will not react with other components in the formula. Therefore, it can be used in advanced cosmetics and new plexiglass with ultraviolet protection.
Silica should be stored in a dry, airtight environment, not exposed to volatile substances.
Certificate
The products have been approved by FDA,REACH,ROSH,ISO and other certification, in line with national standards.
Advantage
Quality First
Competitive Price
First-class Production Line
Factory Origin
Customized Services
Factory
Packing
1kg/ bag; 25kg/ barrel;
20 tons/1×20‘FCL Shipment.
FAQ:
Q: Are you trading company or manufacturer ?
A: We are factory.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
