pPoduct Details
The Difference Between Hydrophilic Silica and Hydrophobic Silica Nanoparticles
Spec:
1. hydrophilic: 20-30nm, <100nm, 99.8%, super fluidity.
2. oleophylic: 20-30nm, <100nm, 99.8%
The difference:
Hydrophilic silica features:
1. It is a hydrophilic liquid phase silica obtained by hydrolysis of a volatile chlorosilanes in the oxyhydrogen flame.
2. It is composed of a silica as a white powder of high purity amorphous silica. Hydrophilic nano silica is moistened with water and can be dispersed in water, its surface not treated.
Hydrophilic silica function:
1. suitable for processing, is adjusted to the optimal rheology
2. reinforced silicone elastomer
3.The nonpolar liquid is thickened
4. food and industrial powder flow aid
5. high chemical purity
6. even at elevated temperatures with excellent insulating properties
7. liquid into powder, such as pharmaceuticals, cosmetics
If you want to learn more, please visit our website Hebei Silicon Research Electronic Materials Co., L.
Hydrophobic silica features:
1. is a hydrophobic silica prepared by the chemical reaction of hydrophilic fumed silica reactive silanes (e.g., chlorosilanes or hexamethyldisilazane amine oxide). It is hydrophobic (water repellent), and can not be dispersed in water.
2. hydrophobic silica products are characterized by: low moisture absorption, good dispersion, rheology even have the ability to regulate for polar systems
Hydrophobic silica functions:
1. processing using the most appropriate rheological
2. thickening polar liquids, such as epoxy resin
3. reinforced silicone elastomer
4. High added amount, as in the molded article
5.Good hydrophobicity, improve corrosion resistance
6.Improved dielectric properties, such as composite cables
7.Powder glidants, such as fire extinguishing agent
8. increase in the coatings and plastics scratch resistance
There are various grades of this substance, which are defined by their amorphous structure. It is used to provide thixotropic properties in coatings and adhesives. It also assists in enhancing flow in the production industry, such as cosmetics and pharmaceuticals.
This is a silica-based polymer with a tendency of absorbing moisture. It is used in high-technology fields or as an ingredient in paints, coatings, electronics and optical fibers industries.
Hydrophilic fumed silica, a light white powder, is brought about by the reaction of oxyhydrogen flame and volatile chlorosilanes (Silicon tetrachloride) to form molten spheres of silicon dioxide (and hydrogen chloride). The particle structure of the product depends on the place of application and the market. The variation of these sphere sizes is what brings about the grades.
The hydrophilic nature of fumed silica is a result of the attachment of hydroxyl groups onto silica atoms just at the surface of the particle; the product is now capable of hydrogen bonding&#;this makes it dispersible in water. This makes the product stable at room temperature, thus increasing the shelf life once opened.
By reacting hydrophilic fumed silica with reactive silanes, hydrophobic silica can be produced. The addition of this product in adhesives and coatings increases the surface energy adhesive force of the substrate.
Contact us to discuss your requirements of hydrophilic silica. Our experienced sales team can help you identify the options that best suit your needs.