PP/HDPE/POE composite thermal-conduction polymer material, preparation method and applications thereof

A polymer material, weight percentage technology, applied in the field of PP/HDPE/POE composite thermally conductive polymer materials and its preparation, can solve the problems of low impact resistance, limited application range, poor thermal conductivity, etc., and achieve excellent thermal conductivity, Excellent mechanical properties, simple and efficient preparation method

Inactive Publication Date: 2019-08-16
WUYI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Polypropylene (PP) has the advantages of light weight, easy processing, corrosion resistance, good mechanical balance, and low price, but its impact resistance is low, and its application range is limited.
Moreover, its thermal conductivity is poor, and its thermal conductivity is only 0.21W / (m K), which severely restricts its application in the fields of heat dissipation devices, electronic appliances, etc.

Method used

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  • PP/HDPE/POE composite thermal-conduction polymer material, preparation method and applications thereof
  • PP/HDPE/POE composite thermal-conduction polymer material, preparation method and applications thereof
  • PP/HDPE/POE composite thermal-conduction polymer material, preparation method and applications thereof

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preparation example Construction

[0052] The carbon fiber modified by surface treatment is prepared by the following method: first mix KH-550 and absolute ethanol for 5 minutes to obtain a mixed solution; dry the carbon fiber at 120°C for 3 hours, and then spray the mixed solution on the surface of the carbon fiber, At the same time, the mechanical mixing is carried out continuously, so that the mixed solution is uniformly dispersed in the carbon fibers; the mixed carbon fibers are dried at a temperature of 120° C. to obtain surface-treated modified carbon fibers.

[0053] Wherein, the weight of KH-550 is 2% of the weight of the carbon fiber, and the weight of absolute ethanol is 20% of the weight of the carbon fiber.

[0054] The lengths of carbon fibers modified by surface treatment were 150, 100 and 50 μm, respectively.

[0055] The flake graphite modified by surface treatment is prepared by the following method: first mix KH-570 and absolute ethanol for 5 minutes to obtain a mixed solution; dry the flake g...

Embodiment 1

[0059] A PP / HDPE / POE composite thermally conductive polymer material, comprising the following components in weight percentage:

[0060]

[0061] Wherein, the length of the carbon fiber modified by the surface treatment is 100 μm, and the particle size of the flake graphite modified by the surface treatment is 30 μm.

[0062] The preparation method of the PP / HDPE / POE composite thermally conductive polymer material comprises the following steps:

[0063] 1) First dry PP at 80°C for 2 hours, then simply mix the dried PP, surface-treated modified carbon fiber, surface-treated modified flake graphite, antioxidant and liquid paraffin for 5 minutes, and then carry out the same direction Asymmetric extrusion and mixing, extrusion granulation to obtain PP mixed pellets;

[0064] 2) Dry the PP mixed pellets and HDPE obtained in step 1) at 80°C for 3 hours, then simply mix the dried PP mixed pellets, dried HDPE and POE for 5 minutes, and then carry out co-directional asymmetric extr...

Embodiment 2

[0069] A PP / HDPE / POE composite thermally conductive polymer material, comprising the following components in weight percentage:

[0070]

[0071]Wherein, the length of the carbon fiber modified by the surface treatment is 100 μm, and the particle size of the flake graphite modified by the surface treatment is 30 μm.

[0072] Its preparation method is with embodiment 1.

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Abstract

The invention discloses a PP/HDPE/POE composite thermal-conduction polymer material, a preparation method and applications thereof, wherein the PP/HDPE/POE composite thermal-conduction polymer material comprises, by weight, 30-60% of PP, 5-15% of HDPE, 5-15% of POE, 10-20% of carbon fiber, 10-20% of graphite, and 3-8% of an auxiliary agent. According to the present invention, the filling type PP/HDPE/POE composite thermal-conduction polymer material with excellent mechanical property, excellent fluidity, excellent thermal property, excellent thermal conductivity and the like is prepared by carrying out same-direction asymmetric extrusion and mixing on the components, and can be used in illumination lampshades, heat dissipating devices, household appliance shells and massage pump shells.

Description

technical field [0001] The invention belongs to the field of heat-conducting polymer materials, and in particular relates to a PP / HDPE / POE composite heat-conducting polymer material and its preparation method and application. Background technique [0002] For the materials used in the field of heat conduction, in addition to requiring good heat conduction properties, there are certain requirements for the mechanical properties, electrical properties, thermal stability and even processing properties of the materials. Polymer materials have good comprehensive performance, easy modification, strong plasticity and good processing performance, and have a wide range of applications. However, polymer materials are usually poor conductors of heat, and their thermal conductivity at room temperature is small, making it difficult to meet application requirements. [0003] Thermally conductive polymer materials are divided into intrinsic type and filled type. Among them, the filled typ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/06C08L23/08C08K7/06C08K3/04C08K7/00C08K9/06B29C48/405B29C48/505
CPCB29C48/405B29C48/505C08L23/12C08L2205/035C08L23/06C08L23/0815C08K7/06C08K3/04C08K7/00C08K9/06
Inventor 杜遥雪徐百平张志旋
Owner WUYI UNIV
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