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Preparation of phenolic resin based micro-balls

A technology of phenolic resin and microspheres, applied in the field of preparation of phenolic resin-based microspheres, can solve the problems of increased cost, time-consuming and labor-intensive, many operation steps, etc., achieves convenient operation, saves the steps of solvent removal, and simplifies The effect of the preparation process

Inactive Publication Date: 2006-05-10
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

[0015] The balls obtained by this method are millimeter-sized, and it is time-consuming and labor-intensive
[0016] The above two patents have a common disadvantage, that is, the solvent must be removed, and the solid should be ground and then dissolved. There are many operating steps, which will undoubtedly increase the operating cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] After the novolac resin with a softening point of (95 ± 2)°C is mixed with the curing agent hexamethylenetetramine at 1: 0.01 (weight ratio), it is then dissolved in methanol to form a phenolic resin methanol solution with a concentration of 90 wt%. ; The surfactant polytetrafluoroethylene and water are formulated into a polytetrafluoroethylene aqueous solution at a ratio of 1:100 (weight ratio); the above-mentioned phenolic resin methanol solution is poured into the polytetrafluoroethylene aqueous solution, and the volume ratio of the two is 1:2 , and heated to 110° C. for 30 minutes at a constant temperature to obtain millimeter-sized resin balls; the diameter of the balls is 1-3 mm.

Embodiment 2

[0030] The softening point is (98 ± 2) ℃ novolac phenolic resin and curing agent hexamethylenetetramine mixed with 1: 0.03 (weight ratio), then dissolved in ethanol to form a concentration of 70wt% phenolic resin ethanol solution; Surfactant poly(alcohol butyral) and water are formulated into poly(alcohol butyral) aqueous solution at 3:100 (weight ratio); the above-mentioned phenolic resin ethanol solution is poured into poly(alcohol butyral) aqueous solution, and the volume ratio of the two is 1: 4. Heating to 115° C. for 60 minutes at a constant temperature with constant stirring to obtain micron-sized resin balls; the diameter of the balls is 200-220 μm.

Embodiment 3

[0032] The softening point is (100 ± 2) ° C novolak phenolic resin and curing agent hexamethylenetetramine mixed with 1: 0.05 (weight ratio), and then dissolved in methanol to form a concentration of 50wt% phenolic resin alcohol solution; Surfactant sodium dodecylsulfonate and water are made into sodium dodecylsulfonate aqueous solution with 5: 100 (weight ratio); The volume ratio of the two is 1:4, and heated to 120° C. for 120 minutes at a constant temperature with constant stirring to obtain micron-sized resin balls; the diameter of the balls is 150-170 μm.

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Abstract

A preparation method of phenolic resin-based microspheres is to mix novolak resin with hexamethylenetetramine and dissolve in methanol and / or ethanol to form a phenolic resin alcohol solution; surfactant and water are formulated to contain surfactant The aqueous solution; the phenolic resin alcohol solution is added to the aqueous solution containing the surfactant, and heated to 110-130° C. at a constant temperature for 30-180 minutes under uniform stirring conditions to obtain phenolic resin-based microspheres. The invention has the advantages of mixing the aqueous solution of the surfactant and the resin-containing alcohol solution to form balls directly without removing the solvent, simplifying the preparation process, eliminating the step of solvent removal, and convenient operation.

Description

technical field [0001] The invention belongs to a preparation method of phenolic resin-based microspheres used for capacitor electrode materials. Background technique [0002] Electrochemical supercapacitors have the advantages of high power density of ordinary capacitors and high energy density of secondary batteries, fast charge and discharge and long life, so it is a new type of energy device between secondary batteries and capacitors. The key to preparing a high-performance supercapacitor lies in how to improve the performance of the electrode material, especially under the premise of ensuring a high specific surface area, there are abundant mesopores and high conductivity, while carbon microspheres have The characteristics of spherical shape and uniform distribution, and the pore size of the carbon microspheres are mainly medium and large pores, which is conducive to the full contact of the electrolyte with the electrode material and increases the capacitance of the cap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/07C08L61/06
Inventor 李开喜王芙蓉
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI