Specification
Silicon dioxide (SiO2) finds various applications in plastic coatings due to its unique properties. Here are several ways SiO2
is used in plastic coatings:
Matting Agent: SiO2 can be used as a matting agent to reduce the glossiness of plastic coatings and provide a matte finish.
By incorporating SiO2 particles into the coating formulation, the surface texture can be modified to achieve the desired level of
gloss or sheen.
Reinforcement: SiO2 nanoparticles can act as reinforcing fillers in plastic coatings, enhancing mechanical properties such as
hardness, scratch resistance, and abrasion resistance. This reinforcement helps improve the durability and lifespan of the coated
plastic surfaces.
Thickening Agent: SiO2 nanoparticles can function as thickening agents in plastic coatings, improving viscosity control and
application properties. Controlled addition of SiO2 particles helps achieve the desired coating thickness and uniformity during
application.
Anti-blocking Agent: SiO2 can act as an anti-blocking agent in plastic coatings, preventing the coated surfaces from sticking
together or blocking during storage or handling. This property is particularly important for coatings applied to flexible plastic films
or sheets.
UV Protection: SiO2 nanoparticles can provide UV protection to plastic coatings by absorbing or scattering harmful UV radiation. Incorporating SiO2 particles into the coating formulation helps prevent color fading, degradation, and other forms of UV-induced
damage to the plastic substrate.
Barrier Properties: SiO2 nanoparticles can enhance the barrier properties of plastic coatings, reducing permeability to gases,
moisture, and other environmental contaminants. This property is beneficial for applications requiring improved moisture
resistance, corrosion protection, or barrier against chemical substances.
Adhesion Promoter: SiO2 can improve adhesion between the plastic substrate and the coating, leading to better coating
performance and durability. Surface-modified SiO2 nanoparticles can enhance compatibility with the plastic surface, promoting
stronger adhesion and reducing the risk of delamination or peeling.
Surface Modification: SiO2 nanoparticles can modify the surface properties of plastic coatings, such as surface energy, wettability,
and surface roughness. This modification can improve surface characteristics like water repellency, printability, or paintability,
depending on the specific application requirements.
By leveraging these properties, SiO2 can significantly enhance the performance, durability, and functionality of plastic coatings
across various applications, including automotive, packaging, construction, electronics, and consumer goods.
Chemical Instructions
| Item Type | SL-410 |
| Content of sio2(dry basis) %, | ≥99.0 |
| Porosity ml/g | 1.8-2.0 |
| Oil absorption, g/100g , g/100g | 260-320 |
| Particle Size, um(Malvent,D50) | 3.0-3.5 |
| Loss on drying(105℃,2Hrs) | ≤5.0 |
| Ignition loss(1000℃,2Hrs) | ≤9.0 |
| Whiteness | ≥90.0 |
| PH(5% Liquor) | 6-7 |
| Surface Treatment | NONE |
Silica Matting Agent Process
1. Wet-PROCESS SILICA GEL TYPE SILICA(SILICA GELS) Aerogel
Water Glass+Acid→n Sio2+Na2So4+H2o(NA2o.nSio2)(H2so4))
Controllable Porosity: Matting/Anti/Blocking/Adsorption
2. PRECIPITEAD SILICA
Water Glass+ Acid→n Sio2+Na2So4+H2o
Difficult to Porosity- Control: Reinforcement/Matting
White Carbon
Anticorrosion Pigments, Inkjet Receptive Coating, Matting Agent
