Heat-conducting plastic master batch, preparation method thereof and heat-conducting plastic

A technology of thermally conductive plastics and inorganic thermally conductive fillers, applied in the field of thermally conductive plastics, can solve problems such as difficult cutting, difficult processing, and further research on thermally conductive plastics

Inactive Publication Date: 2019-08-27
ENN GRAPHENE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in order to better improve the thermal conductivity of thermally conductive plastics, graphene can be added to thermally conductive plastics. However, because the physical shape of graphene is very small, its thickness is on the nanometer scale, and the sheet diameter is usually on the micron scale, so graphite The bulk density of graphen

Method used

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  • Heat-conducting plastic master batch, preparation method thereof and heat-conducting plastic
  • Heat-conducting plastic master batch, preparation method thereof and heat-conducting plastic
  • Heat-conducting plastic master batch, preparation method thereof and heat-conducting plastic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] A micro-nano hybrid high-fill thermally conductive plastic masterbatch and an environmentally friendly preparation method thereof, comprising the following steps:

[0059] S11: Add 5g of polyvinylpyrrolidone (PVP) and 2000g of 50°C ethanol into a container, stir to dissolve the PVP, and obtain a mixed solution;

[0060] S12: Add the mixed solution obtained in 800g graphene nanosheets, 200g arrayed multi-walled carbon nanotubes, 200g alumina and S11 into a horizontal mixer, and mix for 8min (horizontal) at a speed of 800r / min (actual rotating speed). The power of the type mixer is generally 30kW, the maximum rotating speed is 1500r / min, the ratio of the mixing output energy to the mass of the mixed viscous material is 0.67kWh / kg), and the mixed viscous material is obtained;

[0061] S13: Add the mixed viscous material obtained in S12 into a high-speed mixing granulator, extrude it into granules through a screen, and dry in an oven at a temperature of 80°C for 4 hours to ...

Embodiment 2

[0064] A micro-nano hybrid high-fill thermally conductive plastic masterbatch and an environmentally friendly preparation method thereof, comprising the following steps:

[0065] S21: Add 10g sodium carboxymethylcellulose (CMC) and 2000g 50°C pure water into a container, stir to dissolve the CMC, and obtain a mixed solution;

[0066] S22: Add the mixed solution obtained in 200g graphene nanobelts, 100g winding multi-walled carbon nanotubes, 400g magnesium oxide and S21 into a high-speed mixer, and mix for 5min at a speed of 500r / min (the power of the horizontal mixer Generally 30kW, the maximum speed is 1500r / min, the ratio of the output energy of mixing to the mass of the mixed viscous is 0.31kWh / kg), and the mixed viscous is obtained;

[0067] S23: Add the mixed viscous material obtained in S22 to a rotary granulator, extrude it into granules through a screen, and dry in an oven at a temperature of 80°C for 6 hours to obtain granulated granules;

[0068] S24: Mix the granul...

Embodiment 3

[0070] A micro-nano hybrid high-fill thermally conductive plastic masterbatch and an environmentally friendly preparation method thereof, comprising the following steps:

[0071] S31: Add 10g of sodium dodecylbenzenesulfonate (SDBS) and 1000g of 60°C propanol into a container, stir to dissolve the SDBS, and obtain a mixed solution;

[0072] S32: Add 480g of two-dimensional exfoliated graphene, 160g of winding multi-walled carbon nanotubes, 40g of silicon carbide and the mixed solution obtained in S31 into a vertical mixer, and mix for 10min at a speed of 1200r / min (horizontal mixer The power is generally 30kW, the maximum rotating speed is 1500r / min, the ratio of the mixing output energy to the mixed viscous mass is 2.35kWh / kg), and the mixed viscous is obtained;

[0073] S33: Put the mixed viscous material obtained in S32 into a swinging granulator, extrude it into granules through a screen, and dry in an oven at a temperature of 100°C for 4 hours to obtain granulated granule...

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Abstract

The invention provides a heat-conducting plastic master batch, a preparation method thereof and heat-conducting plastic. The heat-conducting plastic master batch comprises resin, graphene, carbon nanotubes and a micron-sized inorganic heat-conducting filler. Thus, the nanoscale graphene and carbon nanotubes and the micron-sized inorganic heat-conducting filler complement each other in geometric dimensions and dimensions, the accordingly generated synergistic effect not only can significantly improve the heat-conducting performance of the heat-conducting plastic master batch, but also ensures the uniform dispersion of the graphene, carbon nanotubes and inorganic heat-conducting filler in the resin to obtain the heat-conducting plastic master batch with high filling density and uniformity; the mixing method can increase the filling ratio of the graphene, obtain the concentrated master batch of a network structure (heat-conducting network) formed by the graphene, the carbon nanotubes andthe inorganic heat-conducting filler in the resin, and the good construction of the heat-conducting network structure can significantly improve the heat-conducting performance of the heat-conducting plastic master batch and also improve the mechanical strength and impact toughness of the heat-conducting plastic master batch.

Description

technical field [0001] The invention relates to the technical field of heat-conducting plastics, in particular to a heat-conducting plastic masterbatch, a preparation method thereof, and a heat-conducting plastic. Background technique [0002] 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 structure, and its lattice is composed of six carbons. The hexagon surrounded by atoms is a new type of material that is the thinnest, the strongest, and the most conductive and thermally conductive material found so far. The thermal conductivity of graphene is as high as 5300W / m·K, which is much higher than that of ordinary metal materials. Its excellent mechanical strength and high surface activity have shown good application prospects in the field of heat conduction / heat dissipation materials. [0003...

Claims

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Application Information

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IPC IPC(8): C08J3/22C08L23/12C08L23/08C08L101/00C08K9/00C08K9/04C08K3/04C08K3/22C08L23/06C08L23/00C08L69/00C08L67/00C08K3/34C08K3/38C08L71/12C08L53/02C08K5/20C08K3/28C08L25/06C08L55/02C09K5/14
CPCC08J3/226C08J2400/00C08J2423/02C08J2423/06C08J2423/08C08J2423/12C08J2425/06C08J2453/02C08J2455/02C08J2467/00C08J2469/00C08J2471/12C08K3/34C08K5/20C08K9/00C08K9/04C08K9/08C08K2003/222C08K2003/2224C08K2003/2227C08K2003/282C08K2003/385C09K5/14C08K3/041C08K3/042
Inventor 朱亚坤张小诗徐玮彤刘耘成徐欢曲波马青喜李金来
Owner ENN GRAPHENE TECH CO LTD
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