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Dispersion method of graphene in phenolic resin and graphene-modified phenolic resin

A technology of graphene modification and phenolic resin, which is applied to the dispersion method of graphene in phenolic resin and the field of graphene modified phenolic resin, can solve the problems affecting the quality of phenolic resin and the concentration of formaldehyde solution, and achieve high strength, Avoid the effect of volatilization

Active Publication Date: 2014-12-24
JINAN SHENGQUAN GROUP SHARE HLDG
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  • Abstract
  • Description
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Problems solved by technology

However, there are great technical hidden dangers in this technology, because phenol or formaldehyde are toxic reagents with a strong pungent smell, and graphene will emit great toxicity when dispersed in these two reagents
At the same time, formaldehyde also has a certain volatility. When graphene is dispersed in formaldehyde solution, it will affect the concentration of formaldehyde solution, and then affect the quality of the prepared phenolic resin.

Method used

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  • Dispersion method of graphene in phenolic resin and graphene-modified phenolic resin
  • Dispersion method of graphene in phenolic resin and graphene-modified phenolic resin
  • Dispersion method of graphene in phenolic resin and graphene-modified phenolic resin

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preparation example Construction

[0048] In the present invention, the biomass carbon source is preferably one or both of cellulose and lignin; more preferably cellulose; most preferably porous cellulose. In the present invention, the preparation method of the porous cellulose preferably includes the following steps:

[0049] A), hydrolyzing biomass resources in acid to obtain lignocellulose, said biomass resources including one or more of plants and agricultural and forestry wastes;

[0050] B) Treating the lignocellulose to obtain porous cellulose, the treatment includes acid treatment, salt treatment or organic solvent treatment.

[0051] In the present invention, the biomass resources are preferably hydrolyzed in acid to obtain lignocellulose, and the biomass resources include one or more of plants and agricultural and forestry wastes. In the present invention, the hydrolysis temperature is preferably 90°C to 180°C, more preferably 120°C to 150°C. In the present invention, the hydrolysis time is preferab...

Embodiment 1

[0103] At 90° C., hydrolyzing corncobs in sulfuric acid for 10 minutes to obtain lignocellulose, the mass of the sulfuric acid being 3% of the mass of the corncobs;

[0104] At 70°C, the lignocellulose was subjected to acidic sulfite treatment for 1 hour to obtain porous cellulose, the pH value in the acidic sulfite treatment process was 1, the acid was sulfuric acid, and sulfite It is magnesium sulfite, the quality of the sulfuric acid is 4% of the quality of the lignocellulose, and the liquid-solid ratio is 2:1.

[0105] The obtained porous cellulose is bleached with hydrogen peroxide, the mass of the hydrogen peroxide is 5% of the mass of the porous cellulose, the bleaching temperature of the hydrogen peroxide bleaching is 100° C., and the bleaching time is 5 hours.

Embodiment 2

[0107] At 180°C, hydrolyzing corncobs in nitric acid for 10 hours to obtain lignocellulose, the mass of the nitric acid being 20% ​​of the mass of the corncobs;

[0108] At 180°C, the lignocellulose was subjected to acidic sulfite treatment for 6 hours to obtain porous cellulose, the pH value during the acidic sulfite treatment process was 7, the acid was sulfuric acid, and sulfite It is sodium sulfite, the quality of the sulfuric acid is 30% of the quality of the lignocellulose, and the liquid-solid ratio is 20:1.

[0109] The porous cellulose is bleached with hydrogen peroxide, the mass of the hydrogen peroxide is 5% of the mass of the porous cellulose, the bleaching temperature of the hydrogen peroxide bleach is 100° C., and the bleaching time is 5 hours.

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Abstract

The invention provides a dispersion method of graphene in phenolic resin. The dispersion method comprises the following steps: A) mixing a graphene solution with first phenolic resin and dispersing to obtain first graphene-modified phenolic resin; and B) mixing the first graphene-modified phenolic resin obtained in the step A) with second phenolic resin to obtain the graphene-modified phenolic resin. According to the dispersion method, graphene can be directly dispersed in phenolic resin very well by virtue of a multi-time dispersion method without being dispersed into formaldehyde, so that the volatilization of formaldehyde is avoided; and the prepared graphene-modified phenolic resin has high strength.

Description

technical field [0001] The invention relates to the technical field of phenolic resins, in particular to a method for dispersing graphene in phenolic resins and graphene-modified phenolic resins. Background technique [0002] Phenolic resin is the first synthetic resin to be industrialized in the world, and it has a history of nearly a hundred years so far. The raw materials are easy to get, the price is low, the production process and equipment are simple, and more importantly, it has excellent mechanical properties, heat resistance, ablation resistance, electrical insulation, dimensional stability, molding processability and flame retardancy. Therefore, phenolic resin has become an indispensable material in the industrial sector. [0003] However, with the development of industry, especially the development of aerospace and other cutting-edge defense technologies, the traditional unmodified phenolic resin has high brittleness, poor toughness and heat resistance, which lim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/06C08K7/24C08K3/04C01B31/04C01B32/184
Inventor 唐一林张金柱郑应福刘晓敏
Owner JINAN SHENGQUAN GROUP SHARE HLDG
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