Composite material with high flexibility and mechanical properties and its preparation method and application
A composite material and highly flexible technology, applied in the direction of chemical instruments and methods, applications, flat products, etc., can solve problems such as agglomeration, poor performance of composite materials, and no obvious improvement in performance of composite materials, and achieve good mechanical properties , good flexibility, enhanced mechanical properties
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[0031] In yet another specific embodiment of the present invention, the preparation method of the above-mentioned composite material is provided, and the preparation method includes: after performing surface modification treatment on carbon fiber cloth, and then using graphene oxide to carry out surface modification treatment on the carbon fiber cloth after surface modification treatment. Processing, and then stacking layers with TPU boards. The method uses a coupling agent to modify the surface of the carbon fiber cloth, so that there are a large number of active groups on the surface of the carbon fiber cloth, such as hydroxyl and carboxyl groups, and then deposits graphene oxide on the modified carbon fiber cloth by spraying. Above, the TPU board and the carbon fiber cloth after the graphene oxide deposition are finally prepared at high temperature by layer stacking to obtain a multi-layer carbon fiber cloth / graphene oxide / TPU composite material with high flexibility and mec...
Embodiment 1
[0048] A preparation method of one layer of carbon fiber cloth / graphene oxide / TPU composite material, comprising:
[0049] The first step is to place the carbon fiber cloth in a mixture of absolute ethanol and silane coupling agent KH-550 (mass ratio: 3:1), and place it at 60°C for 8 hours, and then use distilled water to dry the carbon fiber cloth. Wash to remove the residual ethanol and silane coupling agent on the surface. After multiple rinses, place the carbon fiber cloth in a vacuum oven at 100°C for 8 hours to dry to obtain a surface-modified carbon fiber cloth.
[0050] In the second step, place the TPU particles in a vacuum drying oven at 100°C for drying to remove the moisture present in the TPU particles, then place the dried TPU particles in the corresponding mold, and process them on a hot press at 190°C for 30 minutes. The particles are pressurized at this temperature, which can effectively cure and form the TPU board.
[0051] In the third step, the surface-mod...
Embodiment 2
[0055] A preparation method of two-layer carbon fiber cloth / graphene oxide / TPU composite material, comprising:
[0056] The first step is to place the carbon fiber cloth in a mixture of absolute ethanol and silane coupling agent KH-550 (mass ratio: 3:1), and place it at 60°C for 8 hours, and then use distilled water to dry the carbon fiber cloth. Wash to remove the residual ethanol and silane coupling agent on the surface. After multiple rinses, place the carbon fiber cloth in a vacuum oven at 100°C for 8 hours to dry to obtain a surface-modified carbon fiber cloth.
[0057] In the second step, place the TPU particles in a vacuum drying oven at 100°C for drying to remove the moisture present in the TPU particles, then place the dried TPU particles in the corresponding mold, and process them on a hot press at 190°C for 30 minutes. The particles are pressurized at this temperature, which can effectively cure and form the TPU board.
[0058] In the third step, the surface-modifi...
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Abstract
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