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Carbon fiber reinforced thermoplastic resin composite material with superior heat dissipation performance and preparation method

A technology of resin composite materials and enhanced thermoplasticity, which is applied in the field of carbon fiber composite materials, can solve the problems of not giving the effect of material mechanical properties and complicated preparation technology, and achieve the effect of continuous and stable extrusion process, expanded application field, and simple preparation process

Inactive Publication Date: 2014-11-19
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation technology of this material is complicated, and it does not give the effect on the mechanical properties of the material.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Take by weight 100 parts of polycarbonate resin, 10 parts of carbon fiber, 0 parts of inorganic filler, coupling agent (γ-glycidyl ether oxypropyltrimethoxysilane and polyester modified polydimethylsiloxane, Weight ratio 1: 2) 0.5 part, antioxidant (tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester) 0.2 part and lubricant 0 part batching; Polymer Carbonate resin, inorganic fillers, coupling agents, antioxidants and lubricants are put into the high-speed mixer and mixed evenly at high speed, and then fed to the hopper of the extruder. The temperature of each zone to the die head of the extruder is 260°C, 280°C, 290°C, 300°C, 300°C, 280°C, and the speed of the main engine is 50 Hz. The composite material can be obtained by extruding and granulating through a twin-screw extruder .

[0030] The average length of the carbon fiber in the sample of this embodiment is 596 μm, and the properties of the composite material are respectively: fle...

Embodiment 2

[0032] Take by weight 100 parts of polycarbonate resin, 80 parts of carbon fiber, 0 parts of inorganic filler, coupling agent (γ-glycidyl ether oxypropyltrimethoxysilane and polyester modified polydimethylsiloxane, Weight ratio 1:2) 5 parts, antioxidant (tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester) 1 part and lubricant (ethylene bis fatty acid amide ) 3 ingredients; put polycarbonate resin, inorganic fillers, coupling agents, antioxidants and lubricants into a high-speed mixer and mix evenly at high speed, then feed to the hopper of the extruder, and the carbon fiber is added to the fiber port of the extruder Add, control the temperature of each zone from the feeding port to the extruder die head to be 260°C, 280°C, 290°C, 300°C, 300°C, 280°C, and the speed of the main engine is 50 Hz. Extrude through the twin-screw extruder particles to obtain the composite material.

[0033] The average length of the carbon fiber in the sample of th...

Embodiment 3

[0035] Take by weight 100 parts of polycarbonate resin, 40 parts of carbon fiber, 0 parts of inorganic filler, coupling agent (γ-glycidyl ether oxypropyltrimethoxysilane and polyester modified polydimethylsiloxane, Weight ratio 1:2) 2 parts, antioxidant (tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester) 0.6 part and lubricant (ethylene bis fatty acid amide ) 1 part of ingredients; put polycarbonate resin, inorganic fillers, coupling agents, antioxidants and lubricants into a high-speed mixer and mix evenly at high speed. Add, control the temperature of each zone from the feeding port to the extruder die head to be 260°C, 280°C, 290°C, 300°C, 300°C, 280°C, and the speed of the main engine is 50 Hz. Extrude through the twin-screw extruder particles to obtain the composite material.

[0036] The average length of the carbon fiber in the sample of this embodiment is 412 μm, and the properties of the composite material are respectively: flexura...

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PUM

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Abstract

The invention relates to a carbon fiber reinforced thermoplastic resin composite material with superior heat dissipation performance and a preparation method. The composite material consists of the following materials in parts by weight: 100 parts of polycarbonate, 10-80 parts of carbon fibers, 0-40 parts of inorganic filler, 0.5-5 parts of a coupling agent, 0.2-1 part of an antioxidant and 0-3 parts of a lubricating agent. The preparation method comprises the following steps: fully drying the carbon fibers serving a raw material and the polycarbonate serving as a thermoplastic resin substrate; weighing the raw materials according to a mixture ratio; mixing the raw materials except the carbon fibers at high a speed; and adding the mixture into a hopper of a dual-screw extruder, adding the carbon fibers through the fiber inlet of the extruder, and extruding and granulating the mixture and the carbon fibers. Compared with the prior art, the composite material provided by the invention has high rigidity and high heat dissipation performance, and is suitable for the production and machining of thin-wall light electronic / electrical products. Moreover, the preparation method is simple in the preparation process, is continuous and stable in the extruding process, and is suitable for industrial continuous production.

Description

technical field [0001] The invention belongs to the technical field of carbon fiber composite materials, and in particular relates to a carbon fiber reinforced thermoplastic resin polycarbonate composite material with excellent heat dissipation performance and a preparation method thereof. Background technique [0002] Polycarbonate is a high molecular polymer containing carbonate groups in the molecular chain. Polycarbonate is favored by the market for its excellent impact resistance, dimensional stability, transparency and excellent mechanical properties, and has become one of the top five engineering plastics. The fastest growing general-purpose engineering plastics. At present, the largest markets for polycarbonate applications are electronics / electrical (including computers, office equipment and optical discs), transparent plates / sheets and the automotive industry. [0003] Because polycarbonate has good and constant electrical insulation in a wide range of temperature...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08K7/06C08K3/04B29C47/92B29C48/92
Inventor 杨斌王新灵张媛媛袁角亮刘媛
Owner SHANGHAI JIAO TONG UNIV
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