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A kind of high thermal conductivity nylon composite material and preparation method thereof

A nylon composite material with high thermal conductivity technology, which is applied in building insulation materials, building components, buildings, etc., can solve problems such as difficulty in obtaining high thermal conductivity, achieve simple and reliable preparation methods, excellent performance, and improve overall performance.

Active Publication Date: 2019-04-05
SICHUAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention aims at the problem that it is difficult to obtain high thermal conductivity in the field of existing thermal conductive materials, and provides a preparation method for enhancing the comprehensive performance of composite materials by adding the third component mesophase pitch

Method used

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  • A kind of high thermal conductivity nylon composite material and preparation method thereof
  • A kind of high thermal conductivity nylon composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of nylon high thermal conductivity composite material raw material comprises the following components and content by weight

[0028] Nylon 80 parts

[0029] Thermally conductive filler 18.2 parts

[0030] 1.8 parts of reinforcing filler

[0031] (1) Calcining 18.2 parts of thermally conductive fillers at a high temperature of 500-950°C and cooling to room temperature.

[0032] (2) Dry 80 parts of nylon powder in a vacuum oven at 90°C for 10 hours.

[0033] (3) Stir the thermally conductive filler obtained in step (1), the nylon resin powder obtained in step (2), and 1.8 parts of dried reinforcing filler in a high-speed mixer at 25000 r / min for 3 minutes. The mixture was dried in a vacuum oven at 90 °C for 10 h.

[0034] (4) Add the mixture obtained in step (3) to a twin-screw extruder for extrusion and granulation. The temperature of each section of the twin-screw extruder is 190°C, 210°C, 225°C, 235°C, 235°C, 235°C , 230°C, 220°C, the feeding speed is 7r / mi...

Embodiment 2

[0038] A kind of nylon high thermal conductivity composite material raw material comprises the following components and content by weight

[0039] Nylon 64.6 parts

[0040] Thermally conductive filler 32.2 parts

[0041] Reinforcing filler 3.2 parts

[0042] (1) 32.2 parts of thermally conductive fillers were calcined at a high temperature of 500-950°C and cooled to room temperature.

[0043] (2) 64.6 parts of nylon powder were dried in a vacuum oven at 90°C for 10 hours.

[0044] (3) Stir the thermally conductive filler obtained in step (1), the nylon resin powder obtained in step (2), and 3.2 parts of dried reinforcing filler in a high-speed mixer at 25000 r / min for 3 minutes. The mixture was dried in a vacuum oven at 90 °C for 10 h.

[0045] (4) Add the mixture obtained in step (3) to a twin-screw extruder for extrusion and granulation. The temperature of each section of the twin-screw extruder is 190°C, 210°C, 225°C, 240°C, 240°C, 235°C , 230°C, 220°C, the feeding spe...

Embodiment 3

[0049] A kind of nylon high thermal conductivity composite material raw material comprises the following components and content by weight

[0050] Nylon 51.6 parts

[0051] Thermally conductive filler 43.9 parts

[0052] Reinforcing filler 4.5 parts

[0053] (1) Calcining 43.6 parts of thermally conductive fillers at a high temperature of 500-950°C and cooling to room temperature.

[0054] (2) 51.6 parts of nylon powder were dried in a vacuum oven at 90°C for 10 hours.

[0055] (3) Stir the thermally conductive filler obtained in step (1), the nylon resin powder obtained in step (2), and 4.5 parts of dried reinforcing filler in a high-speed mixer at 25000 r / min for 3 minutes. The mixture was dried in a vacuum oven at 90 °C for 10 h.

[0056] (4) Add the mixture obtained in step (3) to a twin-screw extruder for extrusion and granulation. The temperature of each section of the twin-screw extruder is 190°C, 210°C, 225°C, 235°C, 235°C, 235°C , 230°C, 220°C, the feeding speed ...

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Abstract

The invention relates to a high-performance polymer heat-conducting composite material and a preparation method thereof, belonging to the field of nanocomposite materials. The heat-conducting composite material is made of the following raw materials in parts by weight: 40-80 parts of nylon, 10-60 parts of heat-conducting filler, and 0-6 parts of reinforcing filler. The present invention greatly improves the thermal conductivity of nylon materials by adding thermally conductive fillers, and adds reinforcing fillers to improve the interaction between fillers and substrates. The preparation method is simple, the cost of raw materials is low, and the composite material has excellent comprehensive properties. It is expected to be widely used in electronics Electrical, lighting, chemical and other fields.

Description

technical field [0001] The invention belongs to the field of nanocomposite materials, and in particular relates to a high thermal conductivity nylon composite material and a preparation method thereof. Background technique [0002] With the rapid development of microelectronic integration technology and assembly technology, the volume of electronic components is getting smaller and smaller, which puts forward new requirements for thermal conductive materials. Compared with metals and inorganic non-metallic materials, polymer materials have the advantages of good processing performance, light weight, corrosion resistance, and low price. Polymer materials have tended to replace traditional heat-conducting materials in many fields such as microelectronics, aerospace, and heat exchangers. Polyamide (PA) refers to a class of polymers containing repeating structures of amide groups in the molecular chain. It has excellent mechanical properties, wear resistance, corrosion resistan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/02C08L77/06C08L95/00C08K9/00C08K7/24C08K3/04C08K7/06
CPCC08K2201/011C08L77/02C08L77/06C08L95/00C08K9/00C08K7/24C08K3/04C08K7/06
Inventor 傅强余文进苏晓声陈枫柴颂刚纵桂英
Owner SICHUAN UNIV
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