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CF/peek composite material with interlayer shear strength and preparation method thereof

A shear strength, composite material technology, applied in the field of carbon fiber reinforced polyetheretherketone composite materials, can solve problems such as difficulty in realizing industrialized production

Active Publication Date: 2021-01-05
苏州空翼航材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The CF / PEEK composite materials prepared by the above-mentioned known techniques usually have an ILSS lower than 85MPa, and a few technologies exceed 90MPa. However, it is difficult to realize industrial production by using strong acid or plasma treatment in the preparation process.

Method used

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  • CF/peek composite material with interlayer shear strength and preparation method thereof
  • CF/peek composite material with interlayer shear strength and preparation method thereof
  • CF/peek composite material with interlayer shear strength and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The preparation method of the CF / PEEK composite material with interlayer shear strength, the steps are as follows:

[0046] (1) Sinter 3K5 satin fabrics of CF T300 grade at 300°C for 180 minutes to decompose the original sizing agent on the surface;

[0047] (2) In a saturated water vapor environment with a relative humidity of 95.3%, microwave irradiation and ultraviolet light irradiation are carried out on CF simultaneously, and the product is recorded as ACF; the time of microwave irradiation is 30min, and the microwave frequency is 300MHz; the wavelength of ultraviolet light is irradiated 290nm, UV irradiance is 20W / m 2 ;

[0048] (3) Immerse the ACF in a polyetherketoneketone oligomer / dichloromethane solution with a concentration of 0.2wt.% for 120min, the weight average molecular weight of the polyetherketoneketone oligomer is 5000, take it out and dry it until the water content is 0.48 wt.%, to obtain sizing modified carbon fiber MCF;

[0049] (4) MCF and PEEK...

Embodiment 2

[0061] The preparation method of the CF / PEEK composite material with interlayer shear strength, the steps are as follows:

[0062] (1) Sinter 3K5 satin fabrics of CF T300 grade at 350°C for 138min to decompose the original sizing agent on the surface;

[0063] (2) In a saturated water vapor environment with a relative humidity of 95.8%, CF is irradiated with microwaves and ultraviolet light at the same time, and the product is recorded as ACF; the time of microwave irradiation is 27min, and the microwave frequency is 820MHz; the wavelength of ultraviolet light is irradiated 299nm, UV irradiance is 50W / m 2 ;

[0064] (3) Immerse the ACF in a polyetherketoneketone oligomer / dichloromethane solution with a concentration of 0.6wt.% for 115min. wt.%, to obtain sizing modified carbon fiber MCF;

[0065] (4) MCF and PEEK powder with a weight-average molecular weight of 60,000 are laminated and hot-pressed; the process parameters of laminated hot-pressing are: temperature 378°C, pre...

Embodiment 3

[0069] The preparation method of the CF / PEEK composite material with interlayer shear strength, the steps are as follows:

[0070] (1) Sinter 5 pieces of satin fabric of T300 grade 3K of CF at 420°C for 5 minutes to decompose the original sizing agent on the surface;

[0071] (2) In a saturated water vapor environment with a relative humidity of 95.9%, CF is irradiated with microwaves and ultraviolet light at the same time, and the product is denoted as ACF; the time of microwave irradiation is 24min, and the microwave frequency is 1GHz; the wavelength of ultraviolet light is irradiated 305nm, UV irradiance is 35W / m 2 ;

[0072] (3) Immerse the ACF in a polyetherketoneketone oligomer / dichloromethane solution with a concentration of 0.8wt.% for 94min. wt.%, to obtain sizing modified carbon fiber MCF;

[0073] (4) MCF and PEEK non-woven felt with a weight-average molecular weight of 75,000 are laminated and hot-pressed; the process parameters of laminated hot-pressing are: te...

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Abstract

The invention relates to a CF / PEEK composite material with high interlaminar shear strength and a preparation method of the CF / PEEK composite material. The preparation method comprises the following steps: (1) carrying out 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 polyether ketone ketone oligomer / dichloromethane solution, taking out, and drying to obtain sized modified carbon fiber MCF; (4) laminating and hot-pressing the MCF and a PEEK material, and thus obtaining the CF / PEEK composite material with high interlaminar shear strength, wherein the bending strength of the CF / PEEK composite material with the high interlaminar shear strength is 600-750 MPa, the bending modulus is 50-60 GPa, the interlaminar shear strength is 80-90 MPa, and the residual compression strength after impact is 220-255 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 composite material 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 polyetheretherketone (CF / PEEK) composite materials, and relates to a CF / PEEK composite material with interlayer shear strength and a preparation method thereof. Background technique [0002] In recent years, thermoplastic composites have attracted extensive attention due to their advantages such as 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 corrosion resistance, wear resistance, and biocompatibility, and is expected to be used as a structural material to replace mature metal or thermosetting composite materials. , Widely used in aerospace, medical, machinery, automobile and rail transportation, oil transportation and other fields. [0003] However, the actual applicati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L61/16C08K9/04C08K9/00C08K7/06
CPCC08K7/06C08K9/00C08K9/04C08L61/16
Inventor 朱姝周剑锋孙泽玉史如静王家锋朋素平
Owner 苏州空翼航材科技有限公司
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