A kind of graphene paper composite material
A graphene paper and composite material technology, applied in synthetic resin layered products, chemical instruments and methods, layered products, etc., can solve the complicated process, high requirements for graphene dispersion uniformity, and cannot be popularized and applied, etc. problem, to achieve the effect of excellent comprehensive performance
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[0025] The present invention has no special limitation on the preparation method of the graphene paper, and the preparation method of the graphene paper well-known to those skilled in the art can be adopted, specifically, the redox method or the laser induction method is used. In the present invention, the method for preparing graphene paper by laser-induced method preferably comprises the following steps: adopting laser-induced reduction of polyimide paper to obtain graphene paper; the laser-induced laser is preferably continuous laser or pulsed laser; Said laser-induced lasers preferably include gas lasers, solid-state lasers, and semiconductor lasers; said laser-induced laser focusing distance is preferably 33.1-43.1mm; said laser-induced power is preferably 0.25-25W; said laser-induced scanning speed Preferably 2.54-254mm / s; the laser-induced printing resolution is preferably 10-1000; laser-induced reduction is performed on one or both sides of the polyimide paper; the lase...
Embodiment 1
[0037] A graphene paper composite material, comprising laminated glass fiber epoxy resin and graphene paper; the graphene paper and glass fiber epoxy resin are connected by an adhesive before.
[0038] Alcohol outer flame (400~500℃) is used to burn graphene paper composite material and glass fiber epoxy resin respectively, the effect picture is as follows figure 1 shown. From figure 1 It can be seen that the glass fiber epoxy resin starts to ignite in 15 seconds, and the graphene paper composite material ignites after 30 seconds; the graphene paper composite material of this embodiment has excellent flame retardancy and can be applied to the flame retardant field .
Embodiment 2
[0040] A kind of graphene paper composite material, comprises the glass fiber epoxy resin prepreg and the graphene paper of laminated arrangement; The area of described graphene paper is 9cm 2 The glass fiber epoxy resin prepreg has two layers; the graphene paper is located between the two layers of epoxy resin glass fiber prepreg. Copper sheets are connected to both ends of the upper side of the graphene paper as electrodes for subsequent deicing; the graphene paper composite material is obtained by heating and curing in an oven at 140°C.
[0041] Iceberg-like ice cubes of the same volume were placed on the surface of the graphene paper composite and the glass fiber epoxy resin; at -24°C, a 0.5A electric current was applied to the graphene paper composite through the copper sheet connected by the graphene paper. Current; glass fiber epoxy resin without any treatment, observe the changes of ice cubes, the effect is as follows figure 2 Shown: figure 2 Middle a is the change...
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