Epoxy resin-silicon dioxide composite mono-porous Janus hollow microsphere and preparation method thereof

Abstract

The invention discloses an epoxy resin-silicon dioxide composite mono-porous Janus hollow microsphere and a preparation method thereof. The epoxy resin-silicon dioxide composite mono-porous Janus hollow microsphere consists of an inner cavity and a shell, wherein a mono-pore communicating the outside with the inner cavity is formed in the surface of the shell; the shell consists of an outer silicon dioxide coating layer and an inner crosslinked epoxy resin framework layer. The epoxy resin-silicon dioxide composite mono-porous Janus hollow microsphere is formed by compositing organic and inorganic materials, defects of a single component are overcome, high toughness of the inner organic framework provides high support strength, the outer inorganic material protects the organic layer, and other groups are introduced through a silanization reaction to facilitate further expansion application; structurally, the organic layer and the inorganic layer are strictly distinguished, and the reaction is controllable. Epoxy resin and a silane precursor are used as raw materials according to the preparation method, the raw materials are widely sourced, the cost is low, the condition is mild, and mass production and preparation can be realized.

Description

Technical field [0001] The invention relates to a single-hole hollow microsphere and a preparation method thereof, in particular to an organic-inorganic composite single-hole Janus hollow microsphere and a preparation method thereof. Background technique [0002] Single-hole hollow microspheres refer to a type of spherical shell material with a size ranging from nanometers to micrometers, with an internal cavity and a hole-like channel (usually greater than 20nm) that penetrates the internal cavity on the surface of the shell. The cavity structure of this material is conducive to the loading and transportation of specific substances. At the same time, the larger transmission channel facilitates the transmission of large substances (large molecular weight proteins, nano-functional particles, etc.) between the inside of the sphere and the outside world. Such substances play an important role as microreactors, self-repair materials, or targeted drug delivery materials. [0003] At pr...

AI Technical Summary

Problems solved by technology

Although silica has good chemical stability, the material itself lacks toughness and is a brittle material, which has the disadvantages of insufficient strength and easy rupture under high pressure environment.

In addition, some foreign literatures have also reported the use of organic materials, such as polystyrene, as single-hole hollow microspheres prepared as shell materials (Nat.Mater.2005,4,671; Langmuir2005,21,5655; Adv.Mater.2007,19,2370 ; Colloid Polym.Sci.2008,286,1335), but there are generally disadvantages such as cumbersome preparation methods and difficult structure control, and the use of organic materials alone cannot solve the problem of easy aging of materials, and it is not easy to further modify reactions. space for its application expansion

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