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Three-dimensional braided carbon fiber reinforced polyetheretherketone composite material and preparation method thereof

A technology of polyether ether ketone and composite materials, which is applied in the direction of carbon fiber, fiber treatment, fiber type, etc., can solve the problems of easy delamination, poor stiffness and strength performance, and can not be used, so as to achieve full fiber impregnation, improved bending strength, The effect of excellent mechanical properties

Inactive Publication Date: 2011-07-27
江苏飞荣达新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, conventional laminate composites have inherent deficiencies that are difficult to overcome: poor stiffness and strength properties along the thickness direction, low in-plane and interlaminar shear strengths, easy delamination, and low levels of impact toughness and damage tolerance etc., so it cannot meet the requirements of use in many occasions
However, since the properties of polyether ether ketone are significantly different from those of polymethyl methacrylate, the technology disclosed in patent ZL200610016187.X cannot be used to prepare three-dimensional braided carbon fiber reinforced polyether ether ketone composite materials.

Method used

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  • Three-dimensional braided carbon fiber reinforced polyetheretherketone composite material and preparation method thereof
  • Three-dimensional braided carbon fiber reinforced polyetheretherketone composite material and preparation method thereof
  • Three-dimensional braided carbon fiber reinforced polyetheretherketone composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0017] Polyetheretherketone fiber (produced by ZYEX, UK, fiber diameter 30 microns) and 6K polyacrylonitrile-based carbon fiber (supplied by Shanxi Coal Chemical Co., Ltd., fiber diameter 7 microns) were mixed in three dimensions and five directions according to the carbon fiber volume content of 18% ( figure 1 a), mixed fabric in 5wt% (NH 4 ) 2 HPO 4 After boiling in the solution for 40 minutes, rinse and dry repeatedly with distilled water, put the mixed fabric into a mold, place it in a vacuum hot press, heat it to 150°C, start vacuuming continuously, and keep it at this temperature for 2 hours, and then heat it at 15°C Raise the temperature to 370°C at a speed of 1 / min, keep it warm for 40min, pressurize at 0.3MPa, remove the vacuum, keep the temperature for 30min, cool down slowly, and release the mold when the product temperature is lower than 100°C. The bending strength of the obtained composite material along the fiber weaving direction is 252MPa, the photo of its su...

example 2

[0019] Polyether ether ketone fiber (produced by ZYEX, UK, fiber diameter 30 microns) and carbon fiber 12K polyacrylonitrile base (provided by Shanxi Coal Chemical Industry Co., Ltd., fiber diameter 7 microns) were mixed in three dimensions and five directions according to the carbon fiber volume content of 54%. Mixed fabric at 5wt% (NH 4 ) 2 HPO 4 After boiling in the solution for 40 minutes, rinse and dry repeatedly with distilled water, put the mixed fabric into a mold, place it in a vacuum hot press, heat it to 150°C, start vacuuming continuously, and keep it at this temperature for 2 hours, and then heat it at 15°C / min speed up to 370°C, keep warm for 40min, pressurize 0.6MPa, remove the vacuum, continue to maintain the temperature for 60min, slowly cool down, demould when the product temperature is lower than 100°C, and the bending strength of the obtained composite material along the fiber weaving direction reaches 501 MPa.

example 3

[0021] Polyetheretherketone fiber (produced by ZYEX, UK, fiber diameter 30 microns) and carbon fiber 6K polyacrylonitrile base (provided by Shanxi Coal Chemical Industry Co., Ltd., fiber diameter 7 microns) were mixed in three dimensions and five directions according to the carbon fiber volume content of 54% ( figure 1 b), mix the fabric at 5wt% (NH 4 ) 2 HPO 4 After boiling in the solution for 40 minutes, rinse and dry repeatedly with distilled water, put the fabric into a mold, place it in a vacuum hot press, heat it to 150°C, start to vacuum continuously, and keep it warm at this temperature for 2 hours, and then heat it at 15°C / min speed up to 370°C, keep warm for 40min, pressurize 0.6MPa, remove the vacuum, continue to maintain the temperature for 60min, slowly cool down, demould when the product temperature is lower than 100°C, and the bending strength of the obtained composite material along the fiber weaving direction reaches 556MPa, the photo of its surface structu...

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Abstract

The invention relates to a three-dimensional braided carbon fiber reinforced polyetheretherketone composite material and a preparation method thereof. Carbon fiber reinforced polyetheretherketone fiber, and carbon fiber which is used as the raw material and accounts for 18-54% by volume, are mixed and braided in a three-dimensional five-direction mode to obtain the three-dimensional braided carbon fiber reinforced polyetheretherketone composite material. The three-dimensional braided carbon fiber reinforced polyetheretherketone composite material is prepared from fibers by a braiding and hot compaction combined technique. The technological process comprises the following steps: carrying out three-dimensional mixing and braiding on the polyetheretherketone fiber and carbon fiber, carrying out solution oxidation pretreatment on the mixed fabric, repeatedly flushing with distilled water, drying, putting the mixed fabric into a die, and carrying out hot compaction. The invention can effectively overcome the difficulties in the preparation of the three-dimensional braided composite material due to the thermoplastic property of the polyetheretherketone, thereby obtaining the three-dimensional braided carbon fiber reinforced polyetheretherketone composite material which has the advantages of sufficient fiber immersion and excellent mechanical properties.

Description

technical field [0001] The invention relates to a three-dimensional braided carbon fiber reinforced polyether ether ketone composite material and a preparation method. Background technique [0002] Three-dimensional braided composite material is a new type of composite material that has emerged in the past two decades. It fundamentally overcomes the shortcomings of low interlayer shear strength and easy delamination of traditional laminates. It has been widely used in aviation, aerospace, medical, sports and other fields. For example, conventional laminate composites have inherent deficiencies that are difficult to overcome: poor stiffness and strength properties along the thickness direction, low in-plane and interlaminar shear strengths, easy delamination, and low levels of impact toughness and damage tolerance Etc., thus in many occasions can not meet the requirements of use. The three-dimensional woven carbon fiber composite material produced by the combination of comp...

Claims

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Application Information

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IPC IPC(8): C08L61/16C08K7/06B29C70/24D06M11/71D06M101/30D06M101/40
Inventor 万怡灶罗红林
Owner 江苏飞荣达新材料科技有限公司
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