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Preparation process of a continuous functionalized carbon fiber reinforced thermoplastic resin-based prepreg tape

A thermoplastic resin and functionalized carbon technology, applied in coatings and other directions, can solve the problems of complex process, environmental pollution, increased porosity, etc., and achieve the effect of simplifying the process flow, improving the preparation efficiency, and improving the mechanical properties.

Active Publication Date: 2016-08-24
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since most thermoplastic resins are difficult to dissolve, and the introduction of air bubbles by solvent volatilization will cause certain problems in mechanical properties of composite products, and at the same time, most of the selected solvents have certain toxicity and will cause certain environmental pollution.
Therefore, the current preparation of carbon fiber reinforced thermoplastic prepreg tapes inevitably requires the use of complex processes such as melt impregnation and powder impregnation.
The CN103158209 patent uses a melt impregnation method. The carbon fiber is impregnated with molten thermoplastic resin by dipping rollers, and then the resin content is adjusted by the resin regulating roller to add thermoplastic resin. However, due to the high viscosity of thermoplastic resin, it is difficult to fully infiltrate the carbon fiber into the resin, so the The prepared continuous carbon fiber reinforced thermoplastic prepreg tape still has a certain porosity
CN102417600A patent adds insoluble thermoplastic powdery resin to polyethersulfone solution to obtain suspension liquid and obtains products by hot pressing, but the solvents required by this method are mostly toxic organic solvents, and the amount of powder is difficult to obtain Effective control, and the higher boiling point of the organic solvent will also generate certain bubbles in the continuous carbon fiber reinforced thermoplastic prepreg tape during the volatilization process, resulting in an increase in porosity

Method used

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  • Preparation process of a continuous functionalized carbon fiber reinforced thermoplastic resin-based prepreg tape

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The continuous functionalized carbon fiber obtained by surface etching is placed on the creel, and its surface energy is 50mJ / m 2 , the contact angle with water is 50°, enter the fiber opening equipment through the guide roller to open the fiber, mainly through the wind perpendicular to the functional carbon fiber to open the fiber, the functionalized carbon fiber tow width obtained after the fiber opening is the function before fiber opening 1 times the width of the carbon fiber tow. Then enter the spraying equipment to spray the thermoplastic resin powder suspension. The diameter of the formed spray droplet is controlled at 1mm, and the distance between the nozzle and the functionalized carbon fiber is 40cm. Wherein the thermoplastic resin powder suspension is selected as nylon 1010 powder with an average diameter of 10 μm, and its mass percentage concentration is 30%, and the surfactant is selected from polyurethane, and its mass percentage concentration is 6%, and t...

Embodiment 2

[0034] Place the continuous functionalized carbon fiber obtained by applying water-soluble slurry on the creel, and its surface energy is 120mJ / m 2 , the contact angle with water is 10°, and it enters the fiber opening equipment through the yarn guide roller to open the fibers, mainly through ultrasonic waves, and the width of the functionalized carbon fiber tow obtained after fiber opening is 100% of the width of the functionalized carbon fiber tow before fiber opening 3 times. Then enter the spraying equipment to spray the thermoplastic resin powder suspension, the diameter of the spray droplets formed is controlled at 100 μm, and the distance between the nozzle and the functionalized carbon fiber is 20cm. Among them, the thermoplastic resin powder suspension is selected from polyetheretherketone powder with an average diameter of 25 μm, and its mass percentage concentration is 3%, and the surfactant is selected from polyether, and its mass percentage concentration is 0.3%, ...

Embodiment 3

[0036] The continuous functionalized carbon fibers obtained by plasma grafting were placed on the creel with a surface energy of 108mJ / m 2 , the contact angle with water is 62°, enter the fiber opening equipment through the guide roller to open the fiber, mainly through the roller vibration to open the fiber, the width of the functionalized carbon fiber tow obtained after fiber opening is the width of the functionalized carbon fiber tow before fiber opening 2.6 times. Then enter the spraying equipment to spray the thermoplastic resin powder suspension, the diameter of the spray droplets formed is controlled at 320 μm, and the distance between the nozzle and the functionalized carbon fiber is 32cm. Wherein the thermoplastic resin powder suspension liquid chooses nylon 12 powder with an average diameter of 100 μm, and its mass percentage concentration is 22%, and the surfactant is selected polyvinylpyrrolidone, and its mass percentage concentration is 3.3%, and the residence tim...

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Abstract

The invention relates to a preparation process of a continuous functionalized carbon fiber reinforced thermoplastic resin-based prepreg tape, which mainly includes the processes of guiding yarn, adding resin, hot pressing and rolling, and the functionalized carbon fiber mainly refers to the carbon fiber after surface treatment ; Increase the fiber opening process of functionalized carbon fiber between the described guiding yarn and the described added resin; or increase the fiber opening process after the described yarn guiding, and add resin during fiber opening; The described added resin refers to adding The thermoplastic resin powder suspension is sprayed onto the opened functionalized carbon fibers. In the present invention, fiber opening process is added before adding thermoplastic resin, and the method of spraying suspension containing thermoplastic resin powder is selected for the functionalized carbon fiber when adding thermoplastic resin, so as to effectively control the resin content of prepreg tape, and the preparation is relatively Uniform, continuous functionalized carbon fiber reinforced thermoplastic prepreg tape with low porosity.

Description

technical field [0001] The invention belongs to the technical field of prepreg tape preparation, and relates to a preparation process of a continuous functionalized carbon fiber reinforced thermoplastic resin base prepreg tape, in particular to a continuous functionalized carbon fiber reinforced thermoplastic resin based prepreg tape that is fiber-opened and thermoplastic resin powder is sprayed. Preparation process of prepreg tape Background technique [0002] Continuous carbon fiber reinforced thermoplastic prepreg tape has high tensile strength, high bending strength, high impact strength, high toughness, high fatigue resistance, anti-aging, corrosion resistance, strong designability and processability, short molding cycle, Excellent properties such as environmental friendliness. It is precisely because of the above-mentioned excellent characteristics that continuous carbon fiber reinforced thermoplastic prepreg tapes are more and more applied to the fields of light traf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/34B29C70/56
CPCB29B15/08B29B15/14B29B15/12
Inventor 王彪胡郁菲张坚张雪娜诸金
Owner DONGHUA UNIV
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