Year1
- 型号：
- VK-SP30T
- 规格：
- 10公斤/袋
Adding nano-silica to coatings can improve the scrub resistance, strength, hardness, etc. of the coatings. By adding a small amount of Wanjing nano-silica to the coating, the anti-UV aging test performance of the coating can be improved from the original to above, the scrub resistance is increased by more than 10 times, and the drying time is greatly reduced. Moreover, the raw materials have poor suspension stability and poor thixotropy. , low smoothness and other problems have also been well solved. The can-opening effect of the paint added with Wanjing nano-silica is also significantly improved. The paint does not delaminate, prevents sagging, has good workability, greatly improves stain resistance, and has excellent self-cleaning and adhesion.
Product technical indicators:
Item
Indicators
Appearance
White powder
Model
Average particle size,
Specific surface area,
Content
Value
Weight loss on ignition () ℃
Application characteristics of nano-silica in coatings:
, Washing resistance: The washing resistance is increased from thousands to tens of thousands of times
, Weather resistance: The weather resistance can be increased by about 3 times, adding A certain amount of Wanjing nano-silica can improve the anti-UV aging performance of traditional coating products from the original to above.
Contamination resistance and self-cleaning: Research shows that the stain resistance and self-cleaning properties of the coating can be improved through the following methods. First, the porous structure of nano-silica is used to create a The surface of the coating film forms an interface structure with complementary geometric shapes (such as convex and concave) within the nanoscale range, allowing it to absorb air and form a stable gas barrier film on the surface. The second is to perform surface treatment on the nano-silica particles so that Its surface is amphiphilic or amphiphobic, which can effectively improve the wetting of rainwater on the surface of the architectural coating film and the adhesion of dust, and improve the stain resistance and self-cleaning ability of the coating film.
Antibacterial properties: In coatings, when the added amount of Wanjing nano-silica exceeds.
. Hydrophobic anti-corrosion property: Wanjing nano-silica hydrophobic anti-corrosion coating not only has good adhesion and corrosion resistance, but also has high density and resistance to ion permeability.
Transparency: Wanjing nano-silica can ensure the transparency of nano-modified coatings. Wanjing nano-silica can be used to produce highly wear-resistant transparent coatings, whose wear resistance is more than doubled compared to the original.
Hardness: When Wanjing nano-silica particles are uniformly dispersed in organic materials and individual particles are dispersed, the nano-particles act like rigid chains to strengthen the organic materials, thereby improving the film hardness of UV-cured coatings. , up to . times or more.
. Thermal stability: In UV-cured coatings, Wanjing nano-silica can increase the glass transition temperature of the coating film.
Viscosity: The addition of Wanjing nano-silica can significantly increase the viscosity of the coating
Adding amount:
It has been proved by practice that the Wanjing nano-silica added to the coating has a better The hardness, adhesion, weather resistance, as well as the viscosity and anti-settling ability of the coating and the stability of the coating are optimal. The recommended dosage is ., individual product systems can reach the above, which needs to be determined according to the actual situation.
Usage method:
Nano-silica can be dispersed using a variety of methods, such as grinding, high-speed shearing, ball milling, sand grinding, ultrasonic dispersion, etc., of which the first two methods are more commonly used. . Nano-silica is added to the coating, and its dispersion step is divided into one-step method and two-step method.
The one-step method refers to adding nano-silica into the product raw material system to directly obtain the required certain content of the product. The one-step method is characterized by a simple production process and is more suitable for large-scale, single-product production.
The two-step method is to first disperse nano-silica into raw materials at a higher ratio to make a masterbatch, and then add raw materials to dilute it to a certain ratio. The characteristics of the two-step method are that due to the high viscosity of the system and the large shear force during dispersion, the nano-silica is well dispersed and is suitable for the production of many varieties. At present, the dispersion method used by domestic companies with better product quality mainly adopts one-step high-speed shear dispersion, which can basically meet the needs of users
Packaging: kg/bag
Anti-scratch and wear-resistant agent nanometer for coatings Scratch Resistant Coating Coating Wear Resistant Agent Nano Silica
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