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Waste carbon fiber reinforced nylon 6 composite material and preparation method thereof

A technology of composite materials and carbon fiber, which is applied in the field of polymer materials, can solve the problems of high price of carbon fiber and achieve the effects of difficult recycling, simple processing method and good conductivity

Inactive Publication Date: 2011-09-14
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that carbon fiber is expensive on the market at present, by utilizing the carbon fiber waste silk that obtains from the waste resin-based carbon fiber composite material that reclaims to strengthen nylon 6, the prepared composite material has the advantages of strength, modulus, creep resistance Denaturation, heat resistance, conductivity and other important properties are close to traditional nylon 6 / carbon fiber composite materials
[0006] In order to make the carbon fiber waste silk achieve a good effect of reinforcing nylon 6, in the technical solution of the present invention, the problem of interface cohesion between nylon 6 and carbon fiber waste silk should first be solved

Method used

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  • Waste carbon fiber reinforced nylon 6 composite material and preparation method thereof
  • Waste carbon fiber reinforced nylon 6 composite material and preparation method thereof
  • Waste carbon fiber reinforced nylon 6 composite material and preparation method thereof

Examples

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Effect test

example 1

[0024] First, put carbon fiber waste silk in a bisphenol A epoxy resin / acetone solution with a mass percentage of 30wt.% and stir for 1 hour, then place it in a vacuum oven at 70°C to fully dry, completely volatilize the acetone, and make the epoxy resin adhere on carbon fiber waste. Then, take by weighing nylon 6 resin, carbon fiber waste silk, toughening agent and antioxidant by following mass percentage:

[0025]

[0026] Nylon 6 resin, SEBS-g-MAH, antioxidant 1010 and antioxidant 168 were placed in a high-speed mixer and mixed evenly, and then the mixed pellets were added from the hopper located at the rear end of the twin-screw extruder barrel. At the same time, the carbon fiber waste after surface treatment is fed from the side feeding port in the middle of the barrel through the side feeding device equipped with a weight loss weighing scale, and the vacuum pump at the end of the twin-screw extruder is turned on. The temperature from each section of the screw to the ...

example 2

[0028] First, put carbon fiber waste silk in a bisphenol A epoxy resin / acetone solution with a mass percentage of 30wt.% and stir for 1 hour, then place it in a vacuum oven at 70°C to fully dry, completely volatilize the acetone, and make the epoxy resin adhere on carbon fiber waste. Then, take by weighing nylon 6 resin, carbon fiber waste silk, toughening agent and antioxidant by following mass percentage:

[0029]

[0030] Put nylon 6 resin, EPDM-g-MAH, antioxidant 1010 and antioxidant 168 in a high-speed mixer and mix evenly, and then add the mixed pellets from the hopper at the rear end of the twin-screw extruder barrel. At the same time, the carbon fiber waste after surface treatment is fed from the side feeding port in the middle of the barrel through the side feeding device equipped with a weight loss weighing scale, and the vacuum pump at the end of the twin-screw extruder is turned on. The temperature from each section of the screw to the machine head is 245, 250,...

example 3

[0032] First, put carbon fiber waste silk in a bisphenol A epoxy resin / acetone solution with a mass percentage of 30wt.% and stir for 1 hour, then place it in a vacuum oven at 70°C to fully dry, completely volatilize the acetone, and make the epoxy resin adhere on carbon fiber waste. Then, take by weighing nylon 6 resin, carbon fiber waste silk, toughening agent and antioxidant by following mass percentage:

[0033]

[0034] Nylon 6 resin, SEBS-g-MAH, antioxidant 1010 and antioxidant 168 were placed in a high-speed mixer and mixed evenly, and then the mixed pellets were added from the hopper located at the rear end of the twin-screw extruder barrel. At the same time, the carbon fiber waste after surface treatment is fed from the side feeding port in the middle of the barrel through the side feeding device equipped with a weight loss weighing scale, and the vacuum pump at the end of the twin-screw extruder is turned on. The temperature from each section of the screw to the ...

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Abstract

The invention discloses a waste carbon fiber reinforced nylon 6 composite material and a preparation method thereof, and belongs to the technical field of macromolecular materials. The composite material comprises the following components in percentage by weight: 70 to 90 weight percent of nylon 6 resin, 5 to 20 weight percent of waste carbon fiber subjected to surface modification treatment of epoxy resin or concentrated nitric acid and silane coupling agent, 0 to 10 weight percent of toughening agent, and 0.2 to 0.5 weight percent of antioxidant. The preparation method comprises the following steps of: performing modification by using the bisphenol A epoxy resin or sequentially using the concentrated nitric acid and the silane coupling agent, and drying; adding the mixed materials into a double-screw extruder in a ratio, performing melt blending extrusion, controlling each section of a charging barrel to the temperature of between 240 and 260 DEG C, and controlling a head outlet to the temperature of between 250 and 260 DEG C; and staying the melt, performing water cooling, granulating, sieving and drying. The composite material prepared by the method has high strength, modulus and antistatic performance; and the impact resistance of the composite material is improved by adding the toughening agent.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a composite material using carbon fiber waste silk to reinforce nylon 6 resin and a preparation method thereof, which can solve the problem of recycling carbon fiber composite materials and greatly reduce the production of carbon fiber reinforced nylon 6 composite materials cost. Nylon 6 reinforced with carbon fiber waste has higher strength, modulus and better antistatic properties. Background technique [0002] Nylon 6 has a series of advantages such as high mechanical strength, good toughness, and good wear resistance, and has been widely used in the fields of automobiles, ships, construction, electronics, and national defense. But there are also some defects such as high hygroscopicity, strong acid resistance, strong alkali performance, and poor dimensional stability of products. Therefore, in many application fields, nylon 6 needs to be reinforced wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08K13/06C08K9/04C08K9/06C08K9/02C08K7/06B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895B29C2948/92904
Inventor 汪晓东冯楠武德珍
Owner BEIJING UNIV OF CHEM TECH
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