New method for superfine particle surface modification

Abstract

The invention refers to a kind of new method of superfine inorganic solid particle's surface modification method. It includes the following steps: in the condition of certain temperature, mechanical milling, the protection of nitrogen gas and the existence of catalyzer, choose the superfine particle as the reaction core, pass through the polycondensation with the monomer of ABx or AxB and graft the super-ramus polymer onto the surface of superfine particle. The surface character of superfine particle modified by the super-ramus polymer grafting is changed greatly and can disperse well in all kind of matrixes of rosin and solvent. The method can finish the task in one step. The modified inorganic solid particle can be applied to macromolecule composites, electric bloching material, plastics, dope, latex, antibiotic material and other fields and has a promising industrial application.

Description

technical field

[0001] The invention relates to a new method for surface modification of ultrafine particles. Background technique

[0002] As we all know, the application fields of ultrafine particles are very extensive. Taking nano-silica as an example, it can be widely used in electronic packaging materials, resin-based composite materials, plastics, coatings, rubber and antibacterial materials and other fields. However, due to the large surface energy of ultrafine particles, they are easy to agglomerate, making it difficult to disperse evenly into the polymer matrix. Directly add untreated ultrafine particles, the addition amount is generally at a very low level (generally below 1%), then the effect of ultrafine particles cannot be fully reflected. Therefore, solving the problem of ultrafine particle agglomeration and improving its dispersion in the matrix has become an important research direction. The method to solve the agglomeration and poor dispersion of ultrafin...

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