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A Simple Preparation Method of Phenolic Resin Microspheres Without Dispersant

A technology of phenolic resin and dispersing agent, which is applied in the field of simple preparation of phenolic resin microspheres, can solve the problems of inability to form spheres and the like, and achieve the effects of reducing raw material cost, good reproducibility and cost reduction.

Active Publication Date: 2017-03-22
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition to using an autoclave as the reaction equipment in the aforementioned patents, it is also necessary to add a dispersant or emulsifier or surfactant to obtain the corresponding pellets, otherwise they cannot be formed into pellets

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Add 0.5 times the mass of ethanol solvent to the commercially purchased thermosetting phenolic resin, stir briefly to obtain a slurry, and then directly add the slurry to heat transfer oil and silicone oil at a temperature of 70°C with a volume ratio of 1:8 , start stirring, control the stirring rate to 150 rpm, then keep the temperature for 2 hours, separate solid and liquid, wash and dry to obtain phenolic resin microspheres.

[0018] The diameter of the phenolic resin microspheres is between 80-100 microns, and the sphericity is greater than 95%.

Embodiment 2

[0020] Add 4 times the mass of methanol solvent to commercially purchased thermoplastic phenolic resin, stir briefly to obtain a slurry, and then directly add the slurry to heat transfer oil and silicone oil at a temperature of 100°C with a volume ratio of 1:4 , start stirring, control the stirring rate to 250 rpm, then keep the temperature for 0.5h, separate solid and liquid, wash and dry to obtain phenolic resin microspheres.

[0021] The diameter of the phenolic resin microspheres is between 20-30 microns, and the sphericity is greater than 98%.

Embodiment 3

[0023] Add 1 times the mass of ethanol solvent to the commercially purchased thermosetting phenolic resin, stir briefly to obtain a slurry, and then directly add the slurry to heat transfer oil and silicone oil at a temperature of 85°C with a volume ratio of 1:1 , start stirring, control the stirring rate to 300 rpm, then keep the temperature for 1 hour, separate solid and liquid, wash and dry to obtain phenolic resin microspheres.

[0024] The diameter of the phenolic resin microspheres is between 50-90 microns, and the sphericity is greater than 91%.

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PUM

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Abstract

The invention discloses a simple method for preparing phenolic resin microspheres without the adoption of a dispersing agent. The preparation method comprises the following steps: adding an ethyl alcohol or methyl alcohol solution into commercially purchased thermoset or thermoplastic phenolic resin, wherein the mass of the ethyl alcohol or methyl alcohol solution is 0.5-4 times of that of the phenolic resin, and stirring to obtain slurry; directly adding the slurry into an oil mixture of conduction oil and silicone oil with the volume ratio being (1: 8)-(8: 1) at the temperature of 70-100 DEG C, and stirring, wherein the stirring speed is controlled at 150-500 r / min; carrying out constant temperature for 0.5-2 h, performing solid-liquid separation, washing, and drying to obtain the phenolic resin microspheres. The preparation method has the advantages of requiring no dispersing agent and being low in cost.

Description

technical field [0001] The invention belongs to a simple preparation method of phenolic resin microspheres without dispersant. Background technique [0002] Microsphere materials are widely used in many fields, but compared with other shapes of materials, the preparation of microspheres is more difficult and the cost is higher. [0003] As one of the ideal precursors of carbon materials, phenolic resin has a wide range of applications, but the preparation cost of microspherical phenolic resin is relatively high. For example, autoclave equipment is required in many cases: the application number is CN200410016702.5 "a porous A method for preparing phenolic resin-based carbon microspheres", comprising the following steps: mixing an ethanol solution of a resole phenolic resin with an aqueous surfactant solution of a surfactant to form a uniform emulsion, and then at a temperature of 100°C to 150°C, Stirring and solidification, although the autoclave is not mentioned, it is obvi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J13/02
Inventor 李开喜冯翀
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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