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Preparation method of continuous carbon fiber reinforced poly(ether ether ketone) composite material and product

A technology of polyether ether ketone and composite materials, which is applied in the field of fiber-reinforced resin-based composite materials, can solve the problems of polyetheretherketone high melt viscosity and insolubility in any solvent, and achieve high tensile strength, improved mechanical properties, and excellent The effect of mechanical properties

Inactive Publication Date: 2018-05-18
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a preparation method and product of a continuous carbon fiber reinforced polyetheretherketone composite material. By using sulfonated polyether ether ketone after sulfonation modification, polyether Ether ketone can be dissolved in common organic solvents, thus solving the problem of high melt viscosity of polyetheretherketone and almost insoluble in any solvent. In addition, sulfonated polyether ether ketone can improve the bonding ability of polymer matrix and fiber interface , making it possible to impregnate carbon fiber-reinforced polyetheretherketone composite material prepreg, and thus solve the problem of fiber-reinforced polyetheretherketone composite prepreg

Method used

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  • Preparation method of continuous carbon fiber reinforced poly(ether ether ketone) composite material and product
  • Preparation method of continuous carbon fiber reinforced poly(ether ether ketone) composite material and product
  • Preparation method of continuous carbon fiber reinforced poly(ether ether ketone) composite material and product

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preparation example Construction

[0027] A preparation method of continuous carbon fiber reinforced polyether ether ketone composite material, comprising the following steps:

[0028] 1) Preparation of prepreg tape by solution impregnation method: dissolve sulfonated polyether ether ketone powder in an organic solvent, stir continuously to obtain a uniform polymer solution, then place the carbon fiber fabric in the polymer solution, soak it at room temperature for a certain period of time, and take it out , and finally use microwave drying technology to completely volatilize the solvent in the fabric to obtain prepreg products;

[0029] 2) Preparation of carbon fiber-reinforced polyether ether ketone composite material: lay up the prepreg products in step 1 in a certain order and place them in a hot press, heat them to 360-400 ° C, apply a pressure of 1-5 MPa and keep Press for 10 to 20 minutes, cool to room temperature under pressure to obtain a laminated board, and finally cut and polish the laminated board ...

Embodiment 1

[0041] Add 0.5mol 4,4'-difluorobenzophenone and 300mL 30% oleum into a three-necked flask equipped with mechanical stirring, a thermometer and a reflux condenser in sequence, keep stirring and heat to 110°C for 6h, after cooling Slowly pour into ice water, add sodium hydroxide until the solution is neutral, then add sodium chloride for salting out, filter and dry to obtain sulfonated monomer, and then use methanol aqueous solution for three times of recrystallization to obtain high-purity sulfonated monomer body. Add 30 mmol of sulfonated monomer 3,3'-sodium disulfonate-4,4'-difluorobenzophenone, 70 mmol of non-sulfonated monomer 4,4'-difluorobenzophenone and 100 mmol of bisphenol 3,3',5,5'-Tetramethyl-4,4'-dihydroxybiphenyl was added to a three-necked flask equipped with a mechanical stirrer, a Dean-Stark trap and a nitrogen port, using DMSO as a solvent ( solid content of 20% to 40%), anhydrous potassium carbonate as a catalyst, and toluene as a water-carrying agent, stirre...

Embodiment 2

[0043] Add 20 mmol of sulfonated monomer 3,3'-sodium disulfonate-4,4'-difluorobenzophenone, 80 mmol of non-sulfonated monomer 4,4'-difluorobenzophenone and 100 mmol of bisphenol 3,3',5,5'-Tetramethyl-4,4'-dihydroxybiphenyl was added to a three-necked flask equipped with a mechanical stirrer, a Dean-Stark trap and a nitrogen port, using DMSO as a solvent ( solid content of 20% to 40%), anhydrous potassium carbonate as a catalyst, and toluene as a water-carrying agent, stirred and reacted at 140°C for 3h to remove moisture, then raised the temperature to 170°C for 7h, cooled to room temperature, and poured the reaction mixture into Get flocculent precipitates in water, after pulverization, boil with distilled water and methanol successively, filter to remove inorganic salts and solvents, and finally, dry in a vacuum oven at 100°C for 24 hours to obtain polyether ether ketone with a sulfonation degree of 0.4 , Dissolve the sulfonated polyetheretherketone powder in the organic sol...

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Abstract

The invention belongs to the field of fiber reinforced resin based composite materials, and discloses a preparation method of a continuous carbon fiber reinforced poly(ether ether ketone) composite material and a product. The preparation method comprises the following steps: finishing modification by sulphonation on the poly(ether ether ketone) by copolymerization of sulfonated monomers; preparinga composite material prepreg tape by using solution impregnation; and preparing the continuous carbon fiber reinforced poly(ether ether ketone) composite material by a hot pressing forming process. The invention further discloses the product obtained according to the preparation method. By the preparation method, the problem that the poly(ether ether ketone) is hardly dissolved in any solvents issolved, the method for preparing the prepreg tape by solution impregnation is proposed, the problem of preparation of the continuous carbon fiber reinforced poly(ether ether ketone) composite material is solved, meanwhile, by sulfonated poly(ether ether ketone), the ability of binding of a polymer base body and a fiber interface can be improved, and therefore, the mechanical property of the fiberreinforced poly(ether ether ketone) composite material is improved.

Description

technical field [0001] The invention belongs to the field of fiber-reinforced resin-based composite materials, and more specifically relates to a preparation method and product of continuous carbon fiber-reinforced polyetheretherketone composite materials. Background technique [0002] Polyether ether ketone is an engineering plastic with excellent mechanical properties, heat resistance and chemical corrosion resistance. Due to its excellent comprehensive properties, polyether ether ketone and continuous carbon fiber reinforced composite materials with polyether ether ketone as polymer matrix have been widely used in aerospace, electronic information, energy and medical fields. In the preparation process of continuous fiber-reinforced thermoplastic composites, the polymer matrix and fiber reinforcement are firstly processed into prepreg tapes by a certain impregnation process; Composite products. At present, the manufacturing methods of continuous fiber reinforced thermopl...

Claims

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Application Information

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IPC IPC(8): C08J5/04C08L61/16C08K7/06C08G8/02C08G8/28
CPCC08J5/042C08G8/02C08G8/28C08J2361/16
Inventor 周华民蒋维黄志高张云王云明高西萍
Owner HUAZHONG UNIV OF SCI & TECH
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