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CF/PEEK with high interlaminar shear strength and bending strength and preparation method of CF/PEEK

A technology of shear strength and flexural strength, applied in the field of CF/PEEK and its preparation with shear strength and flexural strength between high layers, can solve problems such as difficulty in realizing industrialized production

Active Publication Date: 2020-07-17
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The CF / PEEK composite material prepared by the above-mentioned known technology usually has an ILSS of less than 85MPa, and the bending strength is usually not more than 700MPa. A few technologies have an ILSS of more than 90MPa and a bending strength of more than 700MPa. However, strong acid or plasma treatment is used in the preparation process. Difficult to achieve industrial production

Method used

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  • CF/PEEK with high interlaminar shear strength and bending strength and preparation method of CF/PEEK
  • CF/PEEK with high interlaminar shear strength and bending strength and preparation method of CF/PEEK
  • CF/PEEK with high interlaminar shear strength and bending strength and preparation method of CF/PEEK

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Experimental program
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Effect test

Embodiment 1

[0052] The preparation method of CF / PEEK with inter-layer shear strength and bending strength is as follows:

[0053] (1) Sinter the CF T300 grade 3K5 satin fabric at 300℃ for 180 minutes to decompose the original sizing agent on the surface;

[0054] (2) In a saturated water vapor environment with a relative humidity of 95.3%, microwave radiation and ultraviolet light irradiation are performed on the CF at the same time, and the product is recorded as ACF; the microwave radiation time is 30min, the microwave frequency is 300MHz; the ultraviolet wavelength is irradiated 290nm, ultraviolet irradiance is 20W / m 2 ;

[0055] (3) Immerse the ACF in the sulfonated polyether ether ketone / dimethyl sulfoxide / carbon nanotube suspension for 120 minutes, take it out and dry it to a water content of 0.48 wt.% to obtain a sizing modified carbon fiber MCF;

[0056] In the sulfonated polyether ether ketone / dimethyl sulfoxide / carbon nanotube suspension, the sulfonated polyether ether ketone is complet...

Embodiment 2

[0070] The preparation method of CF / PEEK with inter-layer shear strength and bending strength is as follows:

[0071] (1) Sinter the CF T300 grade 3K5 satin fabric at 350°C for 138 minutes to decompose the original sizing agent on the surface;

[0072] (2) In a saturated water vapor environment with a relative humidity of 95.8%, CF was irradiated with microwave radiation and ultraviolet light at the same time, and the product was recorded as ACF; the microwave radiation time was 27min, the microwave frequency was 820MHz; the ultraviolet wavelength was irradiated 299nm, UV irradiance is 50W / m 2 ;

[0073] (3) Immerse the ACF in the sulfonated polyether ether ketone / dimethyl sulfoxide / carbon nanotube suspension for 115 minutes, take it out and dry it to a moisture content of 0.45 wt.% to obtain a sizing modified carbon fiber MCF;

[0074] In the sulfonated polyether ether ketone / dimethyl sulfoxide / carbon nanotube suspension, the sulfonated polyether ether ketone is completely dissolved ...

Embodiment 3

[0080] The preparation method of CF / PEEK with inter-layer shear strength and bending strength is as follows:

[0081] (1) Sinter the CF T300 grade 3K5 satin fabric at 420℃ for 5 minutes to decompose the original sizing agent on the surface;

[0082] (2) In a saturated water vapor environment with a relative humidity of 95.9%, CF is simultaneously irradiated with microwave radiation and ultraviolet light, and the product is recorded as ACF; the microwave radiation time is 24min, the microwave frequency is 1GHz; the ultraviolet wavelength is irradiated 305nm, UV irradiance is 35W / m 2 ;

[0083] (3) Immerse the ACF in the sulfonated polyether ether ketone / dimethyl sulfoxide / carbon nanotube suspension for 94 minutes, take it out and dry it to a moisture content of 0.42wt.% to obtain a sizing modified carbon fiber MCF;

[0084] In the sulfonated polyether ether ketone / dimethyl sulfoxide / carbon nanotube suspension, the sulfonated polyether ether ketone was completely dissolved and the conte...

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Abstract

The invention relates to CF / PEEK with high interlaminar shear strength and bending strength and a preparation method of the CF / PEEK. The preparation method comprises the following steps: (1) carryingout high-temperature decomposition on an original sizing agent on the surface of CF; (2) simultaneously carrying out microwave radiation and ultraviolet irradiation on CF in a saturated water vapor environment, and marking a product as ACF; (3) immersing ACF into a sulfonated polyetheretherketone / dimethyl sulfoxide / carbon nanotube suspension, taking out, and drying to obtain sized modified carbonfiber MCF; (4) laminating and hot-pressing the MCF and a PEEK material; and thus obtaining the CF / PEEK with high interlaminar shear strength and bending strength. The bending strength of the finally prepared product is 850-1100 MPa, the bending modulus of the finally prepared product is 55-65 GPa, the interlayer shear strength of the finally prepared product is 95-110 MPa, and the residual compression strength of the finally prepared product after impact is 220-260 MPa. The method disclosed by the invention has the characteristics of high efficiency, environmental friendliness and capability of realizing large-scale production, and the prepared product can replace metal to be applied to the fields of aerospace, medical treatment, machinery, automobiles, rail transit, petroleum transportation and the like.

Description

Technical field [0001] The invention belongs to the technical field of carbon fiber reinforced polyether ether ketone (CF / PEEK) composite materials, and relates to a CF / PEEK with interlayer shear strength and bending strength and a preparation method thereof. Background technique [0002] In recent years, thermoplastic composite materials have received widespread attention due to their advantages of good recyclability, secondary processability, high impact toughness, high specific strength and high specific modulus. Among various thermoplastic composite materials, CF / PEEK has excellent properties such as high stiffness, high thermal stability, chemical resistance, wear resistance, biocompatibility, etc., and is expected to be used as a structural material to replace mature metal or thermoset composite materials. It is widely used in aerospace, medical, machinery, automobile and rail transportation, oil transportation and other fields. [0003] However, the actual application of CF...

Claims

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Application Information

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IPC IPC(8): C08L61/16C08K9/00C08K9/04C08K7/06
CPCC08K7/06C08K9/00C08K9/08C08L61/16
Inventor 朱姝周剑锋史如静马禹王文翰张玥
Owner DONGHUA UNIV
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