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Heat conduction polyimide composite material, preparation method and application thereof

A composite material and polyamide technology, which is applied in the field of thermally conductive polyamide composite materials and its preparation, can solve problems such as poor thermal conductivity, and achieve the effects of low cost, light product quality and simple process

Active Publication Date: 2012-11-28
上海耐特复合材料制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects of poor thermal conductivity of existing polyamide materials, to provide a thermally conductive polyamide composite material and its preparation method and application

Method used

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  • Heat conduction polyimide composite material, preparation method and application thereof
  • Heat conduction polyimide composite material, preparation method and application thereof
  • Heat conduction polyimide composite material, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The raw material formula of the thermally conductive polyamide composite material of Example 1 is shown in Table 1. The preparation method of the heat-conducting polyamide composite material is as follows: adding all other components in the raw material formula except the polyamide and the heat-conducting enhancing modifier into a high-speed mixer, mixing evenly, and taking out. Add polyamide from the main feeding port of the twin-screw extruder, add the materials mixed by the high-speed mixer to the first side feeding port, and then add thermal conductivity enhancing modifier to the second side feeding port, so that the technical solution All the materials are mixed evenly in the twin-screw extruder, melt extruded, cooled, and pelletized to obtain thermally conductive polyamide composite materials; the temperature of the extruder from the main feeding port to the die head is: 260℃, 290℃ , 280°C, 280°C, 280°C, 260°C, 260°C, 260°C, 240°C, die temperature 230°C.

Embodiment 2

[0029] The raw material formula of the thermally conductive polyamide composite material of Example 2 is shown in Table 1. The preparation method of the heat-conducting polyamide composite material is as follows: adding all other components in the raw material formula except the polyamide and the heat-conducting enhancing modifier into a high-speed mixer, mixing evenly, and taking out. Add polyamide from the main feeding port of the twin-screw extruder, add the materials mixed by the high-speed mixer to the first side feeding port, and then add thermal conductivity enhancing modifier to the second side feeding port, so that the technical solution All the materials are mixed evenly in the twin-screw extruder, melt extruded, cooled, and pelletized to obtain thermally conductive polyamide composite materials; the temperature of the extruder from the main feeding port to the die head is: 260℃, 290℃ , 280°C, 280°C, 280°C, 260°C, 260°C, 260°C, 240°C, die temperature 230°C.

Embodiment 3

[0031] The raw material formula of the thermally conductive polyamide composite material of Example 3 is shown in Table 1. The preparation method of the heat-conducting polyamide composite material is as follows: adding all other components in the raw material formula except the polyamide and the heat-conducting enhancing modifier into a high-speed mixer, mixing evenly, and taking out. Add polyamide from the main feeding port of the twin-screw extruder, add the materials mixed by the high-speed mixer to the first side feeding port, and then add thermal conductivity enhancing modifier to the second side feeding port, so that the technical solution All the materials are mixed evenly in the twin-screw extruder, melt extruded, cooled, and pelletized to obtain thermally conductive polyamide composite materials; the temperature of the extruder from the main feeding port to the die head is: 260℃, 290℃ , 280°C, 280°C, 280°C, 260°C, 260°C, 260°C, 240°C, die temperature 230°C.

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Abstract

The invention provides a heat conduction polyimide composite material and a preparation method thereof. The heat conduction polyimide composite material comprises the following components in percentage by weight: 18.2-58.6 percent of polyimide, 0.1-1.0 percent of lubricating agent, 0.1-0.5 percent of antioxidant, 1.0-1.5 percent of surface modifier and 40-81 percent of heat conduction enhanced modifying agent, wherein the heat conduction enhanced modifying agent can be one, two or three of carbon fiber, carbon powder, silicon carbide, aluminum oxide, silicon carbide and aluminum nitride. The heat conduction polyimide composite material provided by the invention has excellent heat conduction, can be used for preparing a radiator part of a light emitting diode illuminating device, is low in cost, easy to process and form, and light in weight, can be recycled, and accords with the environment protection requirement. The preparation method provided by the invention is simple in process and is suitable for massive industrial production.

Description

technical field [0001] The invention relates to the field of polymer composite materials, in particular to a thermally conductive polyamide composite material and a preparation method and application thereof. Background technique [0002] At present, traditionally, the heat radiator generated by the light-emitting diode lighting equipment is still mainly made of metal kits, such as heat-dissipating aluminum fins. The metal material is inherently heavy and difficult to process. It must be die-casted by extrusion. The follow-up processing cost is expensive, and the appearance and shape are fixed. It is not as easy as plastic to produce various beautiful products. [0003] Plastic has the characteristics of light weight and good injection molding performance, but the thermal conductivity of plastic itself is not as good as that of metal. In order to overcome the existing problems of the existing radiator products mainly made of metal (such as aluminum, etc.), it is not easy to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08L77/06C08L77/02C09K5/14C08K7/06C08K3/04C08K3/34C08K3/22C08K3/38C08K3/28B29B9/06B29C47/92F21V29/00F21Y101/02B29C48/92F21V29/87
Inventor 陈勋森
Owner 上海耐特复合材料制品有限公司
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