Device and method for recycling carbon fiber composite material
A composite material and carbon fiber technology, which is applied in the field of carbon fiber reinforced resin matrix composite material recycling and recycling, can solve the problems of harsh process conditions, high energy consumption, affecting the recycling performance of carbon fiber, etc., to achieve a simple recycling process and improve recycling efficiency. Effect
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Embodiment 1
[0035] Such as figure 1 As shown, a carbon fiber composite material recycling device is composed of a conveying unit one 1 , a decomposition unit 2 and a conveying unit two 3 . Conveying unit 1 and conveying unit 2 can be set independently, and can also be connected to the decomposition unit through four hexagon head bolts respectively. Such as image 3 and Figure 4 As shown, the decomposition unit 2 is composed of a bracket 201, an electric heating tube 2051, a honeycomb carrier 2052, an exhaust unit 2a, a control unit 2b and an air delivery unit 2c. The honeycomb carrier 2052, the exhaust unit 2a and the air delivery unit 2c are all fixed on the support, and the control unit 2b is respectively connected to the honeycomb carrier 2052 and the air delivery unit 2c.
[0036] The waste carbon fiber reinforced resin matrix composite material is transported to the decomposition unit 2 through the transport unit 1, and the gas transport unit 2c starts to supply O 2 , the honeyc...
Embodiment 2
[0041] A method for recycling carbon fiber composite materials, (1) using ethanol as a dissolution medium, using nitrocellulose as a surfactant and a dispersant, and adding oxide semiconductor Cr 2 o 3 Uniformly mixed to obtain the impregnation solution, in which the oxide semiconductor Cr 2 o 3 And the quality of nitrocellulose and the ratio of ethanol to 1 / 10 (g / mL).
[0042] (2) Spread the dipping solution evenly on such as Figure 5 The surface of the honeycomb carrier 2052 is shown forming an immersion liquid coating. The electric heating tube 2051 is energized and heated to make the honeycomb carrier 2052 reach and maintain the set temperature of 350°C. Such as figure 1 As shown, the conveying unit one 1 conveys the waste carbon fiber reinforced resin matrix composite material to the decomposition unit 2 . Regulated by Figure 4 The three-position five-way solenoid valve 206 in the shown control unit 2b controls the clamping of the carbon fiber reinforced resin ma...
Embodiment 3
[0046] Adopt the method identical with embodiment 2 to recycle carbon fiber composite material, and its difference is, the temperature of described honeycomb carrier is controlled at 500 ℃, and the control clamping time is 20min, 0 2 The delivery volume is 200mL / min.
[0047] The impregnating solution used in the present invention is to use acetone, ethanol or isopropanol as a dissolution medium, and nitrocellulose as a surfactant and a dispersant, and through conventional proportioning, will be selected from TiO 2 , ZnO, Cr 2 o 3 , NiO or Fe 2 o 3 and other oxide semiconductors are uniformly mixed with the dissolution medium and nitrocellulose. Among them, the mass sum of the oxide semiconductor and nitrocellulose is 1 / 50 (g / mL) to 1 / 10 (g / mL) of the amount of the dissolution medium. The impregnating liquid used in the present invention can also be purchased commercially.
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