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Open-cell type heat-conducting epoxy matrix composite porous material and preparation method and application thereof

A porous material and thermal conductivity technology, applied in the field of porous materials, can solve the problems that do not involve the strength of porous materials, the limited number of reusable times, the influence of material strength, etc., and achieve the effects of excellent air permeability and water permeability, good thermal conductivity, and good toughness

Active Publication Date: 2015-03-25
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese Patent ZL98117513.9 "A Resin Mold Material" adopts the method of adding plasticizer to improve the toughness of the mold. Obviously, with the repeated use of the mold, the plasticizer will migrate outward under external pressure, and the material strength is high. Affected, limited number of reuses
ZL201110272600.X "A Preparation Method of Epoxy Resin Porous Material" discloses the use of organic solvents and water to extract organic by-products in the industrial production of epoxy resin, and obtain soluble organic matter and salts to prepare epoxy resin porous materials. Its strength is low and its application range is small
ZL200810198509.6 "A Microporous Epoxy-Based Thermosetting Resin and Its Preparation Method" discloses the use of organic solvents and supercritical carbon dioxide to control the pore formation of epoxy resins, but does not involve the strength of the prepared porous materials

Method used

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  • Open-cell type heat-conducting epoxy matrix composite porous material and preparation method and application thereof
  • Open-cell type heat-conducting epoxy matrix composite porous material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043]Preparation of polyoxypropylene polyether modified epoxy resin:

[0044] Add 800g of polyether N210 into a 5000mL three-necked flask, then add 167g of TDI under stirring, and raise the temperature to 90°C for 3 hours. Then, 2500 g of E-44 epoxy resin was added, and the reaction was continued at 90° C. for 3 hours, and cooled to obtain modified epoxy resin E1 with a polyoxypropylene polyether percentage content of 23.1 wt%.

Embodiment 2

[0046] Preparation of modified amine curing agent:

[0047] (1) Amino-terminated dendritic polyamide-amine (PAMAM)

[0048] Add 0.3mol (34.86g) of 1,6-hexanediamine and 150g of anhydrous methanol into a 500mL three-necked flask, slowly add 1.2mol (103.2g) of methyl acrylate dropwise at room temperature, and drop it within 1 hour. Stirring was continued at room temperature for 4 hours, and then the temperature was raised to 70° C. for reflux reaction for 5 hours. Then distilled under reduced pressure to remove methanol. Cool, then add 1.2mol (139.44g) of 1,6-hexanediamine and 5g of methanol, heat up to 70°C for reflux reaction for 2 hours, distill under reduced pressure, remove methanol, and cool to obtain the first generation of dendrites with terminal amino groups Polyamidoamine PAMAM, counted as PAMAM1.

[0049] Take out 1 / 4 weight of PAMAM1, add 150g of anhydrous methanol again, slowly add 1.2mol (103.2g) of methyl acrylate dropwise at room temperature, drop it within 1 ...

Embodiment 3

[0062] An open-cell thermally conductive epoxy-based composite porous material is prepared through the following steps:

[0063] (1) At a room temperature of 35°C, add 50 g of silicon oxide with an average particle size of 100 μm, 200 g of silicon carbide of 30 μm, 65 g of montmorillonite of 10 μm and 175 g of water in sequence into a 1000 mL plastic measuring cup, and stir evenly (the stirring time is 10min, stirring speed is 500r / min), obtain filler-water suspension 490g;

[0064] (2) At a room temperature of 35°C, add 93g of the polyoxypropylene polyether modified epoxy resin E1 prepared in Example 1, 15g of aluminum hydroxide with an average particle size of 3μm, and an average particle size of 12g of silicon carbide with a diameter of 30μm and 90g of the modified polyamide PAM2 prepared in Example 2 were stirred rapidly at a stirring speed of 1000r / min for 3 minutes at 35°C to obtain epoxy resin-thermally conductive ceramic powder-modified 210g of amine premix;

[0065]...

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Abstract

The invention discloses an open-cell type heat-conducting epoxy matrix composite porous material and a preparation method and an application of the porous material. The porous material is prepared from 20 to 40wt% of epoxy resin-heat conducting ceramic powder-modified amine pre-mixed solution and 80 to 60wt% of inorganic filler-aqueous suspension; the epoxy resin-heat conducting ceramic powder-modified amine pre-mixed solution is prepared from 100 parts by weight of epoxy resin, 3 to 30 parts by weight of heat conducting ceramic powder and 50 to 100 parts by weight of poly-oxypropylene polyether modified amine curing agent by pre-mixing for 3 to 10 minutes under a temperature of 20 to 35 DEG C. The porous material is of an open-cell structure, remarkable in air and water permeability, and outstanding in toughness and heat conductivity, and has a good application prospect in the ceramics field, the electronic field, the battery diaphragm field, the environmental protection field, the air purifying field, the chemicals field, the building field and other fields.

Description

technical field [0001] The invention belongs to the field of porous materials, and in particular relates to an open-cell thermally conductive epoxy-based composite porous material and its preparation method and application. Background technique [0002] Porous material is a solid material with a large number of air bubbles inside. Due to its special periodic structure, high specific surface area, high adsorption, assemblability, and high porosity, it has been widely used in many fields. Porous materials are divided into open cell type and closed cell type. Porous materials can be divided into micropores (less than 2nm), mesopores (2-50nm), and macropores (greater than 50nm) according to the pore size according to the division of the International Union of Theoretical and Applied Chemistry (IUPAC), each of which corresponds to the corresponding use. . [0003] Open-cell porous material refers to a solid material with interconnected pores, also known as through-pore material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08G59/54C08K3/36C08K3/34C08K3/22C08K3/04C08J9/28
Inventor 黄月文王斌
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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