How can silane coupling agent be used for surface modification of nano-powder?

Nano powder has the characteristics of small particle size and large specific surface area, so it has unique small size effect, tunnel effect and surface effect, so it is favored for its excellent reinforcement, stability and thickening. It is widely used in coatings and other fields.

Due to the large surface energy of nano-powders, easy to agglomerate, which limits the exertion of their ultra-fine effect, it is difficult to disperse and infiltrate in the organic phase, so they must be surface-modified to improve their compatibility and structure with organic molecules. and force.

Using the coupling agent molecules to carry out a certain chemical reaction with the surface of the nano-powder, the silane coupling agent is uniformly covered on the surface of the nano-powder, thereby improving the hydrophobicity of the nano-powder, which is a commonly used method for modifying the nano-powder.

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