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Hydrophobic Fumed Silica Powder for Silicone Rubber/Cosmetics/Paint/ Coating
Basic information:
It is prepared by the chemical reaction of hydrophilic fumed silica with an active guiwan, such as lvguiwan or hexamethyldisilamine. It is hydrophobic (hydrophobic) and does not disperse in water.Hydrophobic fumed silica products are characterized by low hygroscopicity, good dispersion, and rheological regulation even for polar systems. Some products, on the basis of hydrophobic treatment and then through structural modification, can provide further help for customers to develop new products and improve the performance of products. For example, in a liquid system, a high amount of hydrophobic fumed silica can be added with little effect on the viscosity of the system.
Specification
| Items | Analysis Results |
| Appearance | Fluffy white powder |
| SiO2 Content (%) | ≥ 99.8 |
| BET (m2/g) | 270±30 |
| PH of suspension | 6.0~ 9.0 |
| Loss on drying 105ºC (%) | ≤ 0.7 |
| Loss on ignition (LOI) (%) | ≤ 5.0 |
| Tap density (g/L) | 40~60 |
| C content (%) | 2.5~4.0 |
Application:
1. wash resistance: wash resistance to tens of thousands of times
2. Weather resistance: Adding a certain amount of VK-SP30T can significantly improve the UV aging resistance of traditional coating products.
3. stain resistance and self-cleaning: research shows that the stain resistance and self-cleaning of the coating film can be improved by the following ways, one is to use the multi-microporous structure of nano silicon oxide, through a certain process means to form a nanoscale geometric complementary (such as convex and concave) interface structure on the surface of the coating film, so that it absorbs air and forms a stable gas barrier film on the surface; The second is the surface treatment of nano silica particles, so that the surface of its biparental or biphobic, effectively improve the rain on the architectural coating surface wetting and dust adhesion, improve the coating stain resistance and self-cleaning ability.
4. hydrophobic corrosion resistance: VK-SP30T hydrophobic anti-corrosion coating, not only has good adhesion, corrosion resistance, but also has dense and ion permeability resistance.
5. transparency: SP30T can ensure the transparency of nano-modified coatings. High wear-resistant transparent coatings can be prepared by using VK-SP30T, and the wear resistance of the coatings is much higher than before.
6. hardness: when the SP30T nanoparticles are uniform in the organic material and a single particle dispersion, the nanoparticles as a rigid chain on the organic material to enhance the effect, thereby improving the hardness of the UV-curable coating film.
7. thermal stability: in UV-curable coatings, Wanjing nano-silica can increase the glass transition temperature of the coating film.
8. viscosity: The addition of VK-SP30T nano-silica can improve the coating
Storage
Nano 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.
