Continuous fiber enhanced PEEK (Polyether-Ether-Ketone) resin and forming method thereof

A polyetheretherketone resin and continuous fiber technology, which is applied in the field of PEEK resin molding, can solve the problems of inability to prepare continuous fibers and poor mechanical properties of products, and achieve excellent mechanical properties, warpage resistance, and excellent mechanical properties. Effect

Inactive Publication Date: 2018-08-03
JILIN ZHONGYAN HIGH PERFORMANCE PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing fiber-reinforced PEEK method cannot be prepared into continuous fibers and the prepared products have poor mechanical properties, and to provide a continuous fiber-reinforced polyetheretherketone resin and its molding method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Weigh 200 g of polyetheretherketone superfine powder with a particle size of 10 microns and 400 g of ethanol using a high-speed mixer at a speed of 1440 r / min, and blend for 5 minutes to obtain a premix;

[0039] Add 50g of hydroxymethylcellulose polyethylene glycol into 2000g of purified water to fully dissolve, put the aqueous solution and 400g of the premix into a high-speed disperser, 2500r / min, and disperse for 5min to obtain a PEEK dispersion;

[0040]Put the dispersion in an impregnation tank equipped with ultrasonic dispersion, use 1k carbon fiber, pass through the impregnation tank, and disperse under the action of ultrasonic waves. The frequency of the ultrasonic wave is 28KHz, the power is 1000w, and the PEEK powder enters the carbon fiber gap In the process, through a smooth pair of rollers, the excess suspension is squeezed out, the gap between the rollers is controlled between 0.1mm, and then through the drying section, the temperature is set at 120 ° C, th...

Embodiment 2

[0043] Weigh 200 g of polyetheretherketone superfine powder with a particle size of 50 microns, and 500 g of dimethylformamide, use a high-speed mixer at a speed of 1440 r / min, and blend for 8 minutes to obtain a premix;

[0044] Add 50g of polyvinyl alcohol pyrrolidone into 5000g of purified water to fully dissolve, put the aqueous solution and 400g of the premix into a high-speed disperser, 2500r / min, and disperse for 5min to obtain a PEEK dispersion;

[0045] Put the dispersion in an impregnation tank equipped with ultrasonic dispersion, use 3k carbon fibers, pass through the impregnation tank, and disperse under the action of ultrasonic waves. The frequency of the ultrasonic waves is 28KHz, the power is 3000w, and the PEEK powder enters the carbon fiber gap In the process, through a smooth pair of rollers, the excess suspension is squeezed out, the gap between the rollers is controlled between 0.2mm, and then through the drying section, the temperature is set at 260 ° C, th...

Embodiment 3

[0049] Weigh 200 g of micron ultrafine powder with a particle size of 20 microns, and 600 g of acetone using a high-speed mixer at a speed of 1440 r / min, and blend for 5 minutes to obtain a premix;

[0050] Add 10g of hydroxymethylcellulose polyethylene glycol to 5000g of purified water to fully dissolve, put the aqueous solution and 800g of the premix into a high-speed disperser, 2500r / min, and disperse for 5min to obtain a PEEK dispersion;

[0051] Put the dispersion liquid in an impregnation tank equipped with ultrasonic dispersion, use glass fiber, pass through the impregnation tank, and disperse under the action of ultrasonic waves. The frequency of the ultrasonic wave is 28KHz, the power is 2000w, and the PEEK powder enters the gap between the glass fibers In the middle, through a smooth pair of rollers, the excess suspension is squeezed out, the gap between the rollers is controlled between 0.3mm, and then through the drying section, the temperature is set at 200 ° C, th...

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Abstract

The invention provides continuous fiber enhanced PEEK (Polyether-Ether-Ketone) resin and a forming method thereof, and belongs to the field of the forming method of PEEK resin, and solves the problemsof an existing fiber enhanced PEEK forming method that continuous fiber cannot be prepared, and the mechanical performance of a prepared product is poor. The forming method comprises the following steps: firstly, mixing a dispersing agent with PEEK ultrafine powder, and then putting and dispersing the mixture in a high-speed dispersing machine, thus obtaining a premix; secondly, putting and dispersing purified water, the premix and a suspending agent in the high-speed dispersing machine, thus obtaining a dispersing solution; finally, putting the dispersing solution in an impregnating tank provided with ultrasonic dispersion, enabling the continuous fiber to pass through the impregnating tank, dispersing the continuous fiber under the action of ultrasonic waves, then extruding residual suspending solution through a smooth pair roller, drying, melting and rolling, thus obtaining the continuous fiber enhanced PEEK resin. The invention also provides the continuous fiber enhanced PEEK resin obtained through the forming method. The continuous fiber enhanced PEEK resin prepared through the forming method has excellent mechanical performance and excellent warping resistance.

Description

technical field [0001] The invention belongs to the field of molding methods of PEEK resins, and in particular relates to a continuous fiber reinforced polyether ether ketone resin and a molding method thereof. Background technique [0002] Polyetheretherketone (PEEK) is a linear aromatic polymer material with a semi-crystalline structure, and is recognized as the thermoplastic material with the best performance. The glass transition temperature of PEEK is usually 143°C, the melting point is 343°C, and the filled modified PEEK composite can be as high as 330°C. At the same time, PEEK has excellent friction and wear resistance. And has excellent corrosion resistance in most chemical environments, even at elevated temperatures. [0003] For general short fiber reinforcement, after going through the three processes of screw, injection port, and flow in the mold cavity, the length of the fiber drops very sharply, and the average length of the fiber in the final product is less...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/16C08L1/28C08L71/02C08K7/06C08K7/14C08J5/04C08J3/21
CPCC08J3/212C08J5/042C08J5/043C08J2361/16C08J2401/28C08J2471/02
Inventor 谢怀杰边疆谭万龙
Owner JILIN ZHONGYAN HIGH PERFORMANCE PLASTIC
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