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CF/PPS composite material with high impact toughness and preparation method thereof

A technology of high impact resistance, composite material, applied in the field of carbon fiber reinforced polyphenylene sulfide composite material, can solve the problems of difficult to achieve industrialized production, low tensile strength, low impact toughness, etc.

Active Publication Date: 2020-07-10
合肥东华复材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The CF / PPS composite materials prepared by the above-mentioned known techniques are generally either impact toughness (CAI value) lower than 260MPa, or tensile strength lower than 650MPa; and the preparation process either uses strong acid or plasma treatment, which is difficult to realize industrialization production; the oxygen / carbon (O / C) content ratio after CF surface activation is increased by about 40%

Method used

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  • CF/PPS composite material with high impact toughness and preparation method thereof
  • CF/PPS composite material with high impact toughness and preparation method thereof
  • CF/PPS composite material with high impact toughness and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The preparation method of the CF / PPS composite material with high impact toughness, the steps are as follows:

[0053] (1) Sinter 3K5 satin fabrics of CF T300 grade at 300°C 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 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 ;

[0055] (3) Immerse the ACF in a polyethersulfone / dimethylformamide solution with a concentration of 0.2wt.% for 120 minutes, take it out and dry it to a water content of 0.48wt.%, to obtain sizing-modified carbon fiber MCF;

[0056] The weight average molecular weight of polyethersulfone is 55100;

[0057] (4) MCF and PPS powder with a weight-avera...

Embodiment 2

[0074] The preparation method of the CF / PPS composite material with high impact toughness, the steps are as follows:

[0075] (1) Sinter 3K5 satin fabrics of CF T300 grade at 350°C for 138min to decompose the original sizing agent on the surface;

[0076] (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 ;

[0077] (3) Immerse the ACF in a 0.5wt.% polyethersulfone / dimethylformamide solution for 115 minutes, take it out and dry it to a water content of 0.45wt.%, to obtain sizing-modified carbon fiber MCF;

[0078] The weight average molecular weight of polyethersulfone is 55420;

[0079] (4) MCF and PPS powder with a weight-average molecular weight of 60,000 are laminated and ho...

Embodiment 3

[0084] The preparation method of the CF / PPS composite material with high impact toughness, the steps are as follows:

[0085] (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;

[0086] (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 ;

[0087] (3) Immerse the ACF in a polyethersulfone / dimethylformamide solution with a concentration of 1wt.% for 94min, take it out and dry it to a water content of 0.42wt.%, to obtain sizing modified carbon fiber MCF;

[0088] The weight average molecular weight of polyethersulfone is 56100;

[0089] (4) MCF and PPS non-woven felt with a weight average molecular ...

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Abstract

The invention relates to a CF / PPS composite material with high impact toughness and a preparation method of the CF / PPS 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 the ACF into polyether sulfone / dimethylformamide, and drying to obtain sized carbon fiber MCF; (4) laminating and hot-pressing the MCF anda PPS material; (5) cooling to a certain temperature at a rate of 50-70 DEG C / min after hot pressing is finished, applying a certain pressure, maintaining the pressure for a period of time, and then relieving the pressure to obtain the CF / PPS composite material with high impact toughness. The tensile strength of the composite material is 650-820 MPa, the tensile modulus of the composite material is 50-63 GPa, the interlaminar shear strength of the composite material is 60-80 MPa, and the residual compression strength of the composite material after impact is 260-300 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, machinery, automobiles, rail transit, petroleum transportation and the like.

Description

technical field [0001] The invention belongs to the technical field of carbon fiber reinforced polyphenylene sulfide (CF / PPS) composite materials, and relates to a CF / PPS composite material with high impact toughness 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 toughness, high specific strength and specific modulus. Among various thermoplastic composite materials, CF / PPS has excellent properties such as high stiffness, high thermal stability, and chemical corrosion resistance. Automotive and rail transit, oil transportation and other fields. [0003] However, the actual application of CF / PPS thermoplastic composites is not optimistic. There are two main problems: the first is that PPS is very brittle, and its impact toughness is poor compared with other thermoplastic matrices; the second is that t...

Claims

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Application Information

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IPC IPC(8): C08J5/06C08L81/02C08K9/10C08K9/00C08K7/06
CPCC08J5/06C08J2381/02C08K7/06C08K9/00C08K9/10
Inventor 朱姝周剑锋常舰程超任毅王家锋
Owner 合肥东华复材科技有限公司
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