Thermally conductive polypropylene-based composite material and preparation method thereof

A composite material and polypropylene-based technology, applied in the field of composite materials, preparation of thermally conductive polypropylene-based composite materials, and thermally conductive polypropylene-based composite materials, can solve the problems of increasing production costs and achieve the effect of improving thermal conductivity

Inactive Publication Date: 2015-11-25
东莞市宝临塑胶有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Therefore, in order to ensure the thermal conductivity and flame retardancy of PP materials at the same time, it is necessary to add flame retardants and thermal conductive fillers to PP at the same time, which increases the production cost

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  • Thermally conductive polypropylene-based composite material and preparation method thereof
  • Thermally conductive polypropylene-based composite material and preparation method thereof

Examples

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Embodiment Construction

[0050] The present invention will be described in further detail below in conjunction with the embodiments.

[0051] The components and contents of the thermally conductive polypropylene-based composite materials of Examples 1 to 4 and Comparative Examples 1 and 2 are shown in Table 1. Among them, PP (polypropylene) is the base resin, and the melt index of PP is 4-10g / min, specifically 8g / min; the coupling agent is KH-550, the antioxidant is a mixture of 1010 and 168; the lubricant is EBS (N,N'-ethylene bis-stearamide), the whitening agent is titanium dioxide.

[0052] The thermally conductive fillers include magnesium hydroxide A and magnesium hydroxide B, the particle size of magnesium hydroxide A is 200-1500 mesh, and the particle size of magnesium hydroxide B is 5000-12000 mesh; The diameter is arbitrarily selected within the above-mentioned range. Specifically, the particle diameter of magnesium hydroxide A is 800 meshes, and the particle diameter of magnesium hydroxide ...

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Abstract

The invention relates to a thermally conductive polypropylene-based composite material and a preparation method thereof. The thermally conductive polypropylene-based composite material comprises PP and a thermally conductive filler. The conductive filler comprises magnesium hydroxide A with particle diameter of 200-1,500 mesh and magnesium hydroxide B with particle diameter of 5,000-12,000 mesh. The conductive filler of the thermally conductive polypropylene-based composite material employs two kinds of magnesium hydroxide with different particle sizes for complex, so that the magnesium hydroxide particles with large particle diameter form a conductive network, and the magnesium hydroxide particles with small particle size are filled between the large particles to finely fill the conductive network, and to help improve the thermal conductivity of plastics. In addition, magnesium hydroxide belongs to halogen-free flame retardant, and after magnesium hydroxide is added to the PP, the PP gains improved thermal conductivity and certain flame retardance.

Description

technical field [0001] The invention belongs to the technical field of thermally conductive materials, in particular to a composite material, in particular to a thermally conductive polypropylene-based composite material; the invention also relates to a preparation method of a thermally conductive polypropylene-based composite material. Background technique [0002] PP is a common engineering plastic, widely used in electrical and electronic, household appliances, electromechanical industry, automotive electrical appliances and other fields. PP thermally conductive plastics are particularly outstanding in the field of LED applications. The replacement of aluminum by thermally conductive plastics is a bold leap in the plastics industry, and it is also a trend. [0003] In order to enhance the thermal conductivity of PP plastics, the conventional practice is to add thermally conductive fillers to PP. For example, the Chinese invention patent application with the application n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K13/06C08K9/06C08K3/22C08K5/20B29C47/92B29C48/92
CPCC08K13/06B29C48/92B29C2948/92704C08K3/22C08K5/20C08K9/06C08K2003/2224C08K2003/2241C08K2201/003C08K2201/014C08L2201/02C08L23/12
Inventor 刘邵军
Owner 东莞市宝临塑胶有限公司
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