A preparation system and method for thermoplastic carbon fiber prepreg
A carbon fiber prepreg and thermoplastic technology, applied in the direction of coating, etc., can solve the problems of high viscosity of thermoplastic resin, toxicity of thermoplastic powder suspension solvent, difficulty in volatilization, etc., and achieve strong permeability and fluidity, high efficiency Meltability, saving energy effect
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[0030] A preparation device for thermoplastic carbon fiber prepreg, including a flattening device 2, a fiber opening device 3, two heating and deglue devices installed symmetrically up and down, a dipping device, a hot pressing device 8 and a winding device 9, each of which Arranged in order of "one".
[0031] The flattening device 2 is two oppositely rotating drive rollers.
[0032] The heating degumming device includes several heating electrodes 4 uniformly arranged along the fabric direction and an infrared heater 5 installed outside the heating electrodes 4, and the number of heating electrodes can be 2, 3, 4 or 5.
[0033] The dipping device includes a drying hopper 6, a high-pressure spray nozzle 7 arranged below the drying hopper 6, and a vacuum adsorption device 11 arranged below the high-pressure nozzle 7, and the fabric 1 is placed in the gap between the high-pressure nozzle 7 and the vacuum adsorption device 11 middle.
[0034] The impregnation device also include...
Embodiment 1
[0037] The unidirectional carbon fiber tape is flattened on the driving roller, and the carbon fiber continuous filament is opened during the transmission process. The width of the carbon fiber tape after fiber opening is 1.5 times the original width. The carbon fiber long ribbon after fiber opening enters the heating and degumming device, which is energized to the continuous carbon fiber belt through the heating electrode 4 built in the drive roller (the heating electrode 4 is connected to the surface of the drive roller, and the drive roller can be in contact with the fiber). The sizing agent on the surface of the fiber bundle is removed by using the conductive properties of the carbon fiber itself. At the same time, an infrared heater 5 is equipped inside the rapid glue removal device to provide an external infrared radiation heat source. The heat source also realizes the glue removal treatment on the surface of the carbon fiber. The deglue time is determined by the speed of...
Embodiment 2
[0039] Put the plain carbon fiber cloth flat on the transmission roller, during the transmission process, the plain carbon fiber cloth is tensioned, and the tensioned plain carbon fiber cloth enters the heating and degumming device, which is heated by the heating electrode 4 (heating electrode 4) built in the transmission roller. The electrode 4 is connected to the surface of the driving roller, and the driving roller can be in contact with the fiber), and the continuous carbon fiber cloth is energized, and the sizing agent on the surface of the fiber bundle is removed by using the carbon fiber’s own conductive properties, and an infrared heater 5 is equipped inside the heating and degumming device. An external infrared radiant heat source is provided, which also enables debonding of the carbon fiber surface. The degumming time is determined by the speed of the transmission roller, and the speed of the transmission roller is controlled at 7m / min. After the degumming, the plain ...
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