Boron-containing phenolic resin microspheres and preparation method thereof

A technology of boron phenolic resin and phenolic resin, which is applied in the field of boron-containing phenolic resin microspheres and its preparation, can solve the problems of large irreversible capacity loss of boron-containing phenolic resin microspheres, achieve reduced irreversible capacity loss, good sphericity, The effect of low production cost

Inactive Publication Date: 2019-02-19
昆山昆鹏利杰高分子材料技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims at the above problems, and aims to provide a boron-containing phenolic resin microsphere and a preparation method thereof, which can solve the technical problem of large irreversible capacity loss of the boron-containing phenolic resin microsphere in the prior art

Method used

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  • Boron-containing phenolic resin microspheres and preparation method thereof

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[0024] One embodiment of the present invention discloses a preparation method of boron-containing phenolic resin microspheres, comprising the following steps:

[0025] Step 1: mixing boron-containing thermoplastic phenolic resin, thermosetting phenolic resin and ethanol in proportion to form a resin solution;

[0026] Step 2: Put the resin solution, surfactant and solvent into a container, stir and react at a predetermined temperature, and after the reaction is completed, wash and dry the precipitate to obtain spherical boron-containing phenolic resin particles.

[0027] In some preferred embodiments, in Step 1, the mass ratio of boron-containing thermoplastic phenolic resin, thermosetting phenolic resin and ethanol is 1:(2-2.5):2. In step 2, the surfactant is sodium lauryl sulfate; the mass ratio of resin solution, surfactant and solvent is 1: (0.016-0.032): (2.380-4.760); the predetermined temperature is 150-160 °C; the stirring reaction is 400-1000rpm constant speed stirri...

Embodiment 1

[0030] First, mix commercial boron-containing thermoplastic phenolic resin, industrial ethanol, and thermosetting phenolic resin at a mass ratio of 1:2:2.5.

[0031] Next, put the above prepared solution, sodium lauryl sulfate, and liquid paraffin directly into the beaker with a mass ratio of 1:0.032:2.380, stir at a constant speed of 500 rpm, heat up to 150°C, and keep the temperature for 90 minutes. After the reaction stops, , the boron phenolic resin microsphere particle size obtained by the method is between 40-90 μm. Its optical micrograph is shown in figure 1 , it can be seen that its sphericity is good.

Embodiment 2

[0033] First, mix commercial boron-containing thermoplastic phenolic resin, industrial ethanol, and thermosetting phenolic resin at a mass ratio of 1:2:2.5.

[0034] Next, put the above prepared solution, sodium lauryl sulfate, and liquid paraffin directly into the beaker with a mass ratio of 1:0.020:3.170, stir at a constant speed of 500 rpm, heat up to 150°C, and keep the temperature for 90 minutes. After the reaction stops, , the particle size of boron phenolic resin microspheres obtained by this method is about 370 μm in D50.

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Abstract

The invention relates to boron-containing phenolic resin microspheres and a preparation method thereof. The method comprises the steps of mixing boron-containing thermoplastic phenolic resin, thermosetting phenolic resin and ethanol according to a proportion to form a resin solution; putting the resin solution, a surfactant and a solvent into a container, stirring the mixture at a predetermined temperature for a reaction, and after the reaction is completed, washing and drying precipitate to obtain spherical boron-containing phenolic resin particles. The boron-containing phenolic resin microspheres and the preparation method thereof have the advantages that the operation steps are simple, the production cost is low, the boron-containing thermoplastic phenolic resin, the thermosetting phenolic resin, the surfactant, the solvent and the like are mixed, and heating and stirring are conducted to form the spheres; the solvent is washed with distilled water, and the adopted materials are free of pollution and environmentally friendly. The obtained boron-containing phenolic resin microspheres have good sphericity and uniform particle size distribution, and the irreversible capacity loss is greatly reduced when the microspheres are used for negative electrode materials of lithium ion batteries.

Description

technical field [0001] The invention relates to the field of material technology, and more specifically, relates to a boron-containing phenolic resin microsphere and a preparation method thereof. Background technique [0002] The cured structure of thermosetting phenolic resin has the characteristics of three-dimensional network crosslinking. As the main element, carbon element not only has high chemical bond energy between atoms, but also has a large cohesive force between molecular chains. Therefore, after pyrolysis, thermosetting phenolic resin It has a high carbon residue rate and strong carbon forming ability. In addition, the small molecules that can escape from the thermoplastic phenolic resin during the pyrolysis process will produce a large number of microporous structures, so the specific surface area of ​​the carbon material will increase after pyrolysis. [0003] After the carbon material prepared by the phenolic resin material is doped with boron (B), the worki...

Claims

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Application Information

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IPC IPC(8): C08L61/06C08L61/14C08J3/12
CPCC08J3/12C08J2361/06C08J2461/14
Inventor 王安苗刘杰万青李伟
Owner 昆山昆鹏利杰高分子材料技术有限公司
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