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High-dispersion graphene heat conduction plastic production method, product thereof, and application of product

A technology of heat-conducting plastics and graphene, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of unsatisfactory properties of graphene heat-conducting plastics, achieve good dispersion, no environmental pollution, and broaden the application range

Inactive Publication Date: 2017-12-15
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, although the research on adding graphene to plastics to enhance thermal conductivity is in progress, the performance of graphene thermally conductive plastics is not ideal due to the severe agglomeration of graphene

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: A highly dispersed graphene thermally conductive plastic and a preparation method thereof, consisting of the following components in parts by weight: 0.2 parts of antioxidant, 0.5 parts of coupling agent, 10 parts of graphene, 5 parts of thermally conductive powder additives, When preparing 85 parts of the matrix resin polypropylene, the graphene is firstly pretreated, and the graphene is immersed in a mixed solution containing 1.5% sodium dodecylsulfonate water and ethanol with a volume ratio of 1:5, and ultrasonically and stirred for 2 hours. Afterwards, dry in an oven at 100°C for 4 hours. Mix the antioxidant and thermal conductive powder additives into a uniform powder, and then mix them evenly with the graphene slurry, coupling agent, and matrix resin, and then add them to the twin-screw extruder from the main feeding port for extrusion processing. Twin-screw extrusion The main processing temperature of the machine is 200°C, the main machine speed is ...

Embodiment 2

[0027] Embodiment 2: A highly dispersed graphene thermally conductive plastic and a preparation method thereof, consisting of the following components in parts by weight: 2 parts of antioxidant, 0.8 parts of coupling agent, 20 parts of graphene, 8 parts of thermally conductive powder additives, When preparing 70 parts of matrix resin polypropylene, firstly pretreat the graphene, impregnate the graphene in a mixed solution containing 2.5% sodium dodecylbenzene sulfonate water and ethanol with a volume ratio of 1:4, ultrasonic and stirring After 3 hours, dry in an oven at 100°C for 6 hours. Mix the antioxidant and thermal conductive powder additives into a uniform powder, and then mix them evenly with the graphene slurry, coupling agent, and matrix resin, and then add them to the twin-screw extruder from the main feeding port for extrusion processing. Twin-screw extrusion The main processing temperature of the machine is 210°C, the main machine speed is 180 rpm, the main feeding...

Embodiment 3

[0028] Embodiment 3: A highly dispersed graphene thermally conductive plastic and a preparation method thereof, consisting of the following components in parts by weight: 3 parts of antioxidant, 1 part of coupling agent, 30 parts of graphene, 10 parts of thermally conductive powder additives, When preparing 60 parts of matrix resin polypropylene, firstly pretreat the graphene, impregnate the graphene in a mixed solution containing 3% polyvinylpyrrolidone water and ethanol with a volume ratio of 1:3, ultrasonic and stirring for 5 hours, then place Dry in an oven at 100°C for 8 hours. Mix the antioxidant and thermal conductive powder additives into a uniform powder, and then mix them evenly with the graphene slurry, coupling agent, and matrix resin, and then add them to the twin-screw extruder from the main feeding port for extrusion processing. Twin-screw extrusion The main processing temperature of the machine is 220°C, the main machine speed is 220 rpm, the main feeding speed...

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Abstract

The invention discloses a high-dispersion graphene heat conduction plastic production method, a product thereof, and an application of the product. The production method comprises the following steps: impregnating graphene in a water and ethanol mixed solution containing a surfactant, carrying out ultrasonic and stirring treatment for 1-5 h, and drying the obtained solution in a 100 DEG C oven for 4-10 h; respectively weighing and mixing an antioxidant and a heat conduction powder assistant according to a certain mass ratio to form uniform powder; uniformly mixing the uniform powder, a graphene slurry, a coupling agent and matrix resin; and adding the above obtained raw materials into a double screw extruder from a main feeding opening, carrying out blending extrusion processing, pelletizing the processed raw materials, and carrying out low temperature drying to obtain the final product high-dispersion graphene heat conduction plastic. The dispersion state of the graphene in the plastic is improved, so the plastic has a high mechanical strength and a good heat conduction performance. The graphene heat conduction plastic disclosed in the invention has the advantages of strong versatility, good processability and realization of continuous large-scale production.

Description

technical field [0001] The invention relates to the technical field of polymer composite materials. In particular, it relates to a high-dispersion graphene heat-conducting plastic and its preparation method and application. Background technique [0002] Plastics have been widely used in various fields of packaging and daily life, such as industry, agriculture, medical treatment, hygiene, etc., mainly because of their low price, excellent material performance, good electrical insulation and chemical stability, and easy processing and molding. advantage. Although plastic has many advantages, it also has its disadvantages, such as poor thermal conductivity, which limits the application range of plastics. [0003] Since its discovery in 2004, graphene has become one of the research hotspots in the field of materials science due to its unique two-dimensional structure and excellent thermal, mechanical and electrical properties. Graphene has a perfect two-dimensional crystal st...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/12C08K13/06C08K9/04C08K3/04C08K3/22C08K3/34C09K5/14
CPCC08K13/06C08K3/04C08K3/22C08K3/34C08K9/04C08K2003/2227C09K5/14C08L23/06C08L23/12
Inventor 何丹农王岩岩林琳金彩虹
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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