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Nylon 6 in-situ intercalation graphite-based heat-conducting composite material and method for preparing same

A heat-conducting composite material and in-situ intercalation technology, which is applied in the field of composite materials, can solve problems such as difficult to provide space, achieve the effect of increasing interlayer spacing and enhancing mechanical properties

Active Publication Date: 2016-11-09
ZHONGSHAN YONGWEI NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the interlayer spacing of graphite is only 0.335nm, it is difficult to provide the space required for the reaction as a matrix for in-situ intercalation

Method used

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  • Nylon 6 in-situ intercalation graphite-based heat-conducting composite material and method for preparing same

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A nylon 6 in-situ intercalation graphite-based thermally conductive composite material, comprising the following components in weight percent:

[0043] Expanded graphite oxide 15%,

[0044] Caprolactam 78%,

[0045] Acetic acid 1%,

[0046] Surfactant 1%,

[0047] Toughener 5%.

[0048] Wherein, the expanded graphite oxide is prepared by preparing commercially available 300-mesh flake graphite by the Hummers method, and then putting it into a muffle furnace at 1000° C. for 1 minute to expand.

[0049] The reaction conditions of the Hummers method are as follows: add commercially available 300-mesh flake graphite and sodium nitrate to concentrated sulfuric acid and stir, the temperature is controlled at 0°C, and the reaction time is 30 minutes; potassium permanganate is slowly added, and the reaction time is 30 minutes; The temperature is 35°C, and the reaction time is 30 minutes; then the temperature is raised to 90°C, and the reaction time is 30 minutes; dilute wit...

Embodiment 2

[0055] A nylon 6 in-situ intercalation graphite-based thermally conductive composite material, comprising the following components in weight percent:

[0056] Expanded graphite oxide 15%,

[0057] Caprolactam 76%,

[0058] Acetic acid 2%,

[0059] Surfactant 2%,

[0060] Toughener 5%.

[0061] Wherein, the expanded graphite oxide is prepared by preparing commercially available 300-mesh flake graphite by the Hummers method, and then putting it into a muffle furnace at 1000° C. for 1 minute to expand.

[0062] The reaction conditions of the Hummers method are as follows: add commercially available 300-mesh flake graphite and sodium nitrate to concentrated sulfuric acid and stir, the temperature is controlled at 4°C, and the reaction time is 40 minutes; potassium permanganate is slowly added, and the reaction time is 60 minutes; The temperature is 40°C, and the reaction time is 60 minutes; then the temperature is raised to 100°C, and the reaction time is 60 minutes; dilute with...

Embodiment 3

[0068] A nylon 6 in-situ intercalation graphite-based thermally conductive composite material, comprising the following components in weight percent:

[0069] Expanded graphite oxide 18%,

[0070] Caprolactam 74%,

[0071] Acetic acid 1%,

[0072] Surfactant 2%,

[0073] Toughener 5%.

[0074] The expanded graphite oxide is prepared by preparing commercially available 300-mesh flake graphite by the Hummers method, and then expanding it in a muffle furnace at 1000° C. for 1 minute.

[0075] The reaction conditions of the Hummers method are as follows: add commercially available 300-mesh flake graphite and sodium nitrate to concentrated sulfuric acid and stir, the temperature is controlled at 4°C, and the reaction time is 30 minutes; potassium permanganate is slowly added, and the reaction time is 40 minutes; Increase the temperature to 40°C, and the reaction time is 40 minutes; then raise the temperature to 100°C, and the reaction time is 30 minutes; add hydrogen peroxide s...

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Abstract

The invention discloses a nylon 6 in-situ intercalation graphite-based heat-conducting composite material. The nylon 6 in-situ intercalation graphite-based heat-conducting composite material is mainly prepared from expanded graphite oxide suspension and caprolactam by means of in-situ intercalation polymerization. The nylon 6 in-situ intercalation graphite-based heat-conducting composite material comprises, by weight, 15-20% of expanded graphite oxide, 68-78% of the caprolactam, 1-2% of acetic acid, 1-2% of surfactants and 5-8% of toughening agents. The nylon 6 in-situ intercalation graphite-based heat-conducting composite material has the advantages that the prepared nylon 6 in-situ intercalation graphite-based heat-conducting composite material is excellent in heat-conducting property and mechanical property; the nylon 6 in-situ intercalation graphite-based heat-conducting composite material is prepared by means of in-situ intercalation polymerization, and accordingly the expanded graphite oxide can be uniformly dispersed in polymer base materials; a method for preparing the nylon 6 in-situ intercalation graphite-based heat-conducting composite material is simple and is easy to implement and free of environmental pollution; the expanded graphite oxide is prepared by the aid of Hummers processes, then is expanded and prepared in a muffle furnace and has large interlay spacing, effects of adsorbing polar groups can be realized by the expanded graphite oxide, accordingly, large in-site intercalation spaces can be provided for the caprolactam, and in-situ intercalation polymerization reaction can be advantageously carried out.

Description

technical field [0001] The invention belongs to the field of composite materials, and relates to a nylon 6 / graphite-based heat-conducting composite material, in particular to a nylon 6 in-situ intercalated graphite-based heat-conducting composite material and a preparation method thereof. Background technique [0002] Flake graphite is a natural crystalline carbon with a very high melting point and a layered structure. It has excellent electrical conductivity, thermal conductivity, and acid and alkali resistance. It is widely used in modern industries. [0003] Since the interlayer spacing of graphite is only 0.335nm, it is difficult to provide the space required for the reaction as a matrix for in-situ intercalation. The graphite flakes treated by the Hummers method have polar groups such as hydroxyl groups and carboxyl groups, which are easy to interact with other polar groups or polar polymers and connect to each other. Moreover, the interlayer spacing of the expanded fl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/14C08G69/16C08K9/04C08K9/00C08K7/24C08K3/04C08L77/02C08L53/02C09K5/14
CPCC08G69/14C08G69/16C08L77/02C09K5/14C08L53/02C08K9/04C08K9/00C08K7/24C08K3/04
Inventor 徐常威余丁山唐浩林赵剑豪
Owner ZHONGSHAN YONGWEI NEW MATERIAL CO LTD