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A kind of epoxy resin-silicon dioxide composite single hole janus hollow microsphere and preparation method thereof

A technology of epoxy resin and silicon dioxide, which is applied in chemical instruments and methods, alkali metal compounds, alkali metal oxides/hydroxides, etc., can solve the problems of lack of toughness, insufficient strength, and easy cracking of materials, and achieve raw materials The effect of a wide range of sources, high support strength, and mild conditions

Inactive Publication Date: 2019-12-10
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • A kind of epoxy resin-silicon dioxide composite single hole janus hollow microsphere and preparation method thereof
  • A kind of epoxy resin-silicon dioxide composite single hole janus hollow microsphere and preparation method thereof
  • A kind of epoxy resin-silicon dioxide composite single hole janus hollow microsphere and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 4

[0049] The number of carbon atoms in the paraffin wax in Example 4 is 25-35.

Embodiment 1

[0050] Example 1, preparation of epoxy resin-silica composite single-hole Janus hollow microspheres

[0051] Prepare epoxy resin-silica composite single-hole Janus hollow microspheres according to the following steps:

[0052] (1) Preparation of epoxy resin prepolymer emulsion

[0053] oil phase

[0054] Epoxy resin E51 1g

[0055] n-Hexadecane 0.2g

[0056] Toluene 2.5g

[0057] water box

[0058] water 24g

[0059] Epoxy resin-polyethylene glycol copolymer 0.3g

[0060] According to the above ratio, dissolve epoxy resin E51 and n-hexadecane in toluene to obtain an oil phase; dissolve epoxy resin-polyethylene glycol copolymer in water to obtain a water phase; mix the oil phase and water phase, 15000rpm shear emulsification for 10min to obtain a stable epoxy resin prepolymer emulsion;

[0061] (2) Preparation of cross-linked epoxy resin single-hole hollow microspheres

[0062] Add 0.1 g of 2-ethyl-4-methylimidazole to the emulsion obtained in step (1), react at 70°C f...

Embodiment 2

[0066] Example 2, preparation of epoxy resin-silica composite single-hole Janus hollow microspheres

[0067] Prepare epoxy resin-silica composite single-hole Janus hollow microspheres according to the following steps:

[0068] (1) Preparation of epoxy resin prepolymer emulsion

[0069] oil phase

[0070]

[0071]

[0072] water box

[0073] water 30g

[0074] Epoxy resin-polyethylene glycol copolymer 0.2g

[0075] According to the above ratio, epoxy resin E44, epoxy resin E51 and n-octadecane were dissolved in xylene to obtain an oil phase; epoxy resin-polyethylene glycol copolymer was dissolved in water to obtain a water phase; Phase and water phase mixing, ultrasonic emulsification (ultrasonic intensity 200W / cm 2 ) 10min, get stable epoxy resin prepolymer emulsion;

[0076] (2) Preparation of cross-linked epoxy resin single-hole hollow microspheres

[0077] Add 0.05 g of 2-methylimidazole to the emulsion obtained in step (1), react at 60° C. for 24 h, centrifuge...

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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 whose size is on the order of nanometers to micrometers, has an internal cavity, and has a pore-like channel (usually greater than 20 nm) on the surface of the shell that communicates with the internal cavity. The cavity structure of this material is conducive to the loading and transportation of specific substances, and at the same time, the large transmission channel facilitates the transmission of large substances (large molecular weight proteins, nano-functional particles, etc.) between the interior of the sphere and the outside. Such substances play an important role as microreactors, self-healing materials, or as targeted drug delivery...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28
CPCB01J20/103B01J20/26B01J20/28021C02F1/288
Inventor 杨振忠刘嘉贤梁福鑫
Owner INST OF CHEM CHINESE ACAD OF SCI
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