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Device and method for preparing continuous fiber reinforced thermoplastic prepreg tape

A technology of reinforced thermoplastic and continuous fiber, applied in the direction of coating, etc., can solve the problems of unstable resin content of prepreg tape, impurity cannot be completely removed, and difficult to adjust in real time, so as to achieve stable and controllable resin content, shorten resin flow process, The effect of less fiber damage

Active Publication Date: 2018-06-29
EAST CHINA UNIV OF SCI & TECH
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Problems solved by technology

[0007] In view of the above defects or improvement needs in the prior art, the present invention provides a device and method for preparing continuous fiber reinforced thermoplastic composite material prepreg, which can be used to solve the problems of unstable resin content of the prepreg existing in the above impregnation methods, Low control accuracy, difficult real-time adjustment, large fiber damage and impurity cannot be completely removed, so as to prepare a high-performance continuous fiber-reinforced thermoplastic prepreg tape with stable, accurate and controllable resin content and prepreg tape width; and the equipment of the present invention is simple, The method is easy to operate

Method used

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  • Device and method for preparing continuous fiber reinforced thermoplastic prepreg tape

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Embodiment 1

[0051] The equipment and method of the present invention are used to prepare continuous carbon fiber reinforced thermoplastic polyetheretherketone composite material prepreg tape, and the mechanical properties of the unidirectional laminate are investigated. The raw materials used are as follows:

[0052] Continuous carbon fiber (Toray T700SC, 12K continuous carbon fiber);

[0053] Polyetheretherketone (PEEK) resin powder (Victrex 450PF, melting point 343°C, powder particle size 50μm).

[0054] The preparation steps of the continuous carbon fiber reinforced thermoplastic polyether ether ketone composite prepreg tape are as follows:

[0055] A roll of 12K T700 carbon fiber is placed on the spindle of the creel 1, and guided by the guide roller 3, the carbon fiber enters the spreading device 2. In this embodiment, a mechanical spreading rod is used to spread the carbon fiber to make it thin. After the carbon fiber is spread, it enters the impregnation tank 7 filled with PEEK r...

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Abstract

The invention belongs to the technical field of resin-based composite materials, and relates to a device and a method for preparing a continuous fiber reinforced thermoplastic composite material prepreg tape. The device is composed of a fiber decoiling device, a yarn spreading device, a powder dipping groove, a heating channel, a rolling device, a resin content monitoring system, a powder coatingdevice, a guide device, a traction device and a winding device. The implementation method comprises the following steps that fiber bundles subjected to yarn spreading and fiber expanding enter the powder dipping groove, a certain amount of resin powder adheres to the fiber bundles, then heating is carried out to melt resin, the thickness of the prepreg tape is measured by using a non-contact thickness gauge to calculate the content of the resin, the back side of the prepreg tape is overturned to the upper part through guide rollers, then the prepreg tape enters the powder coating device to besubjected to secondary powder coating on the back surface, and then fusion, shaping and winding are carried out to obtain the final finished product. The device and the method are suitable for impregnating fibers with the high-temperature high-viscosity resin, and the prepreg resin content and the width of the prepreg tape can be accurately controlled.

Description

technical field [0001] The invention belongs to the technical field of thermoplastic composite materials, and in particular relates to a device and a method for preparing a continuous fiber reinforced thermoplastic composite material prepreg tape. . Background technique [0002] Compared with traditional thermosetting composites, continuous carbon fiber reinforced thermoplastic polymer matrix composites (CFRTP) have higher impact toughness and damage tolerance, high environmental stability, short molding cycle, easy recycling and reusable , a large number of applications of continuous fiber reinforced thermoplastic polymer composites has become a new development trend. The impregnation of fibers with resin is a recognized critical step in the molding process of continuous fiber reinforced thermoplastic resins. This is because the thermoplastic resin is basically solid at room temperature and has a very high melt viscosity (>100Pa·S). Such a high melt viscosity makes it ...

Claims

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Application Information

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IPC IPC(8): B29B15/14B29C70/42B29C70/54
CPCB29B15/125B29B15/14B29C70/42B29C70/54
Inventor 周晓东单毫郭兵兵李敏范传杰曾铮洪成
Owner EAST CHINA UNIV OF SCI & TECH
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