Heat conduction powder/monomer cast nylon nanometer composite material, method for preparing same and application of heat conduction powder/monomer cast nylon nanometer composite material

A technology of nanocomposite materials and cast nylon, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of poor thermal conductivity, achieve good thermal stability, improve mechanical properties and thermal conductivity, and low water absorption Effect

Inactive Publication Date: 2017-08-04
HUNAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention mainly aims at the disadvantage of poor thermal conductivity of monomer cast nylon, and in-situ modification of thermal conductive powder in the cast nylon polymerization system can better improve the thermal conductivity of cast nylon

Method used

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  • Heat conduction powder/monomer cast nylon nanometer composite material, method for preparing same and application of heat conduction powder/monomer cast nylon nanometer composite material
  • Heat conduction powder/monomer cast nylon nanometer composite material, method for preparing same and application of heat conduction powder/monomer cast nylon nanometer composite material
  • Heat conduction powder/monomer cast nylon nanometer composite material, method for preparing same and application of heat conduction powder/monomer cast nylon nanometer composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The ratio of raw materials in Table 1 is selected, and the heat-conducting powder is silicon dioxide.

[0048] S1. Add the heat-conducting powder, aprotic polar solvent and organic modifier according to the above proportions into the kettle A containing caprolactam monomer 1, adjust the temperature of the kettle A to 70-85°C, and carry out the stirring reaction for 0.5 ~ 2h;

[0049] S2. Warm up the kettle A in step S1 to 130-140° C., and vacuumize for 15-60 minutes under a certain degree of vacuum. The vacuum degree of the vacuum-evacuation is 99000-99997 Pa; then add an initiator to react in a vacuum for 15-30 minutes;

[0050] S3. Put the caprolactam monomer 2 into the kettle B, heat until the caprolactam monomer 2 melts and start vacuuming, the caprolactam monomer 2 is completely melted, add the catalyst and heat up to 130-140°C, and continue vacuuming for 10-15 minutes;

[0051] S4. After mixing the materials obtained in kettle A and kettle B, pour them into a mol...

Embodiment 2

[0054] This embodiment selects the ratio of raw materials in Table 1, and the difference from Example 1 is that the heat-conducting powder is selected from aluminum nitride. Its preparation method is identical with embodiment 1.

[0055] The properties of the prepared thermally conductive powder / monomer cast nylon nanocomposite are shown in Table 1.

Embodiment 3

[0057] This embodiment selects the ratio of raw materials in Table 1, and the difference from Example 1 is that the heat-conducting powder is selected from aluminum oxide. Its preparation method is identical with embodiment 1.

[0058] The properties of the prepared thermally conductive powder / monomer cast nylon nanocomposite are shown in Table 2.

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Abstract

The invention discloses a heat conduction powder/monomer cast nylon nanometer composite material and a method for preparing the same. The method includes adding heat conduction powder, aprotic polar solvents and organic modifiers into a kettle A filled with caprolactam monomers, carrying out until the temperature reaches 70-85 DEG C, stirring the heat conduction powder, the aprotic polar solvents, the organic modifiers and the caprolactam monomers for 0.5-2 h to obtain mixtures, vacuumizing the kettle A for 15-60 min, heating the mixtures until the temperatures of the mixtures reach 130-140 DEG C, adding initiators into the mixtures and carrying out vacuumizing reaction for 15-30 min; heating a kettle B filled with caprolactam monomers until the caprolactam monomers are dissolved, vacuumizing the kettle B, adding catalysts into the completely dissolved monomers to obtain mixtures, heating the mixtures until the temperatures of the mixtures reach 130-140 DEG C and vacuumizing the kettle B for 10-15 min; mixing materials in the kettle A and materials in the kettle B with one another to obtain mixtures, pouring the mixtures into molds at the temperatures of 150-170 DEG C, carrying out polymerization molding, preserving heat for 10-60 min and then releasing the molds. The heat conduction powder/monomer cast nylon nanometer composite material and the method have the advantages that nylon matrixes and the heat conduction powder can be organically combined with one another by the aid of the heat conduction capacity of the heat conduction powder, and accordingly the problems in the aspect of heat conduction of cast nylon can be solved; the heat conduction powder/monomer cast nylon nanometer composite material prepared by the aid of the method is good in heat stability, high in abrasion resistance and excellent in comprehensive performance.

Description

technical field [0001] The present invention relates to monomer cast nylon material and its preparation and application, more specifically, relate to a kind of heat-conducting powder / monomer cast nylon nanocomposite material and its preparation method and application. Background technique [0002] In 1960, Monsanto Company of the United States first poured caprolactam molten monomer at 140°C and a basic catalyst directly into a mold at 150-200°C, and made shaped products under normal pressure for about 15 minutes. This article is known as Monomer Casting Nylon, or MCPA6. MCPA6 has higher molecular weight, crystallinity, and better physical properties than ordinary PA6 because it is rapidly polymerized and molded at a temperature lower than the melting temperature of PA6. [0003] In addition to the advantages of light weight, good mechanical properties, low noise, wear resistance and self-lubrication, MCPA6 also has some shortcomings, such as poor low-temperature impact per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/14C08G69/16C08K9/04C08K3/28C08K3/22C08K3/34C08K3/38C08K3/04C08K3/08C08L77/02C09K5/14
CPCC08G69/14C08G69/16C08K3/04C08K3/08C08K3/22C08K3/28C08K3/34C08K3/38C08K9/04C08K2003/085C08K2003/2227C08K2003/2296C08K2003/282C08K2003/385C09K5/14C08L77/02
Inventor 赖登旺李玉华李笃信刘跃军杨军
Owner HUNAN UNIV OF TECH
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