Nano-silica for epoxy resin matting Nano-silica has strong electronic and electrical properties, which can greatly improve the material performance. Jingrui nano silica has been treated with a special epoxy resin coupling agent to produce epoxy resin-specific nano silica (), which has better dispersion and can greatly improve the tensile strength of epoxy resin. Strength, impact strength, elongation at break, thermal stability and other properties, maintain transparency, and at the same time have good matting effect
Application of nano-silica in epoxy resin:
, heat resistance Property: Due to the large specific surface area of nano-silica particles, strong interface bonding with the epoxy matrix, absorbing a large amount of impact energy, and increasing the rigidity of the matrix, nano-silica particles can strengthen the toughening ring within a certain range. oxy resin, and also improves the heat resistance of the material
and enhances the toughening effect: due to the addition of nano-silica particles, the impact strength, tensile strength, elongation at break and other properties of the epoxy resin composite material There is a large improvement within a certain range, which shows that the nano-silica particles play a role in strengthening and toughening. It highlights the excellent filling characteristics of nanoscale silica and greatly improves the material performance
3. Matting effect: The product has a large pore volume, a polyhedral molecular structure, a narrow particle diameter distribution, and Ideal specific surface area, high oil absorption value and other characteristics. In practical applications, it fully reflects high adsorption, matting, multi-thixotropy and anti-stick properties. It can be widely used for matting and thickening of paint, anti-sticking of resin, adsorption of printing media, surface treatment of leather, etc. This product can significantly improve the physical and mechanical properties of the resin in a wet state, has good accelerating dispersion and anti-sedimentation effects, can significantly improve the gloss of the coating film, and achieve good matting effects
Product indicators:
Project< br/> Index
Appearance
White powder
Model
Particle size,
Specific surface area,
Content
Value
Instructions for use:
Add the dried and dehydrated nano-silica to the dissolved coupling In the solvent of the agent, it is then treated with grinding, high-speed shearing, ball milling, sand grinding, ultrasonic wave, etc. for dozens of minutes. Under stirring, mix the above solution and epoxy resin evenly, remove the solvent, and raise the temperature to 3°C to allow the coupling agent to react with the epoxy resin. After cooling, add a stoichiometric amount of curing agent, mix evenly, evacuate and degas, pour into a steel mold coated with release agent and preheated, and then cool and release after programmable temperature rise and solidification.
Adding amount:
The recommended adding amount is: The mass ratio of epoxy resin to nano-silica: Customers can also choose a suitable adding ratio according to their actual situation.
Dispersion of nanosilica:
Due to the small size of nanoparticles and high surface activity, they are easy to agglomerate and lose their role in reinforcing and toughening the polymer. Therefore, when preparing nanoparticle-filled composite materials, Nanoparticles should be fully dispersed. Grinding, high-speed shearing, ball milling, sanding, ultrasonic and other treatments will help the dispersion of nanoparticles in the resin. Due to the high surface energy and strong adsorption of nanoparticles, they are easy to aggregate and difficult to disperse uniformly and stably. Dispersion, therefore, we use grinding, high-speed shearing, ball milling, sand grinding, ultrasonic and coupling agent treatment methods to promote the uniform dispersion of nano-silica in epoxy resin
According to the action of coupling agent According to the monolayer theory, the particle size decreases and the amount of coupling agent increases. The mass ratio of silane coupling agent to nanosilica is /.
Packing: kg/bag
Storage method: Nano-silica should be stored in a dry and airtight environment, and is not allowed to be exposed to volatile substances
Xuancheng Jingrui New Materials,< br/>
Nano silica for epoxy resin matting