Surface treatment method of inorganic nano-microparticle and preparation method of composite material

Abstract

The invention relates to the technical field of polymer composite materials and discloses a surface treatment method of an inorganic nano-microparticle and a preparation method of a composite material. By utilizing the surface treatment method, the inorganic nano-microparticle is added into mixed solvent composed of a silane coupling agent containing benzoxazine-functional group, water and an organic solvent, and the mixed solvent is heated and stirred to extract the inorganic nano-microparticle after surface modification, so that the agglomerate phenomenon of the inorganic nano-microparticle in polymer can be effectively improved, and the dispersity of the inorganic nano-microparticle in the polymer can be improved. In addition, as the benzoxazine-functional group on the surface of the inorganic nano-microparticle can be subjected to auto-agglutination and also can be subjected to copolymerization with polymer monomers of epoxy resin, benzoxazine, cyanate ester, and the like, the polymer composite material can be prepared by the inorganic nano-microparticle treated by the silane coupling agent containing the benzoxazine-functional group.

Description

technical field [0001] The invention relates to the technical field of polymer composite materials, in particular to the surface treatment of inorganic nanoparticles and the preparation technology of composite materials. Background technique [0002] Inorganic materials usually have excellent mechanical properties (high hardness, high modulus, etc.) and physical properties (optical, thermal conductivity, electrical conductivity, magnetism, electromagnetics, etc.), but their preparation and processing properties are poor. Polymer-based composite materials are materials prepared by compounding nano- and micro-scale inorganic materials and organic polymer materials. Comprehensive performance. This composite material not only has the characteristics of flexibility and easy processing and forming of polymer materials, but also has the advantages of excellent mechanical properties (high hardness, high modulus, etc.) and good heat resistance and high thermal conductivity of inorga...

AI Technical Summary

Problems solved by technology

[0003] However, due to the small particle size, large specific surface area, and high surface energy of inorganic nanoparticles, it is easy to agglomerate, so it is difficult to uniformly disperse them into polymer materials.

In order to improve the dispersion of inorganic nanoparticles, mechanical stirring, banburying, ultrasonic dispersion and other methods are usually used, but the dispersion effect is not ideal.

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