Method for transforming waste paper or fiber fabric into graphene-carbon fiber composite material

Abstract

The invention relates to a method for transforming waste paper or fiber fabric into a graphene-carbon fiber composite material. The method comprises the following steps: mixing the waste paper or fiber fabric with urea, cyanamide or cyanic acid according to a mass ratio of (10:1) to (1:100) and arranging in a muffle furnace under the protection of nitrogen; treating for 1-48 hours by controlling the calcining temperature to 800 to 1500 DEG C; finally naturally cooling to obtain a graphene modified carbon fiber composite material. Compared with the prior art, the method disclosed by the invention is simple in process, environmental friendly, safe, low in cost and capable of realizing large-scale continuous production; the prepared composite material is wide in application range in various fields such as catalysis, energy storage, photo-electric parts and sensors.

Description

technical field [0001] The invention belongs to the field of non-metallic carbon nanocomposite materials, in particular to a method for converting waste paper or fiber fabrics into graphene-carbon fiber composite materials. Background technique [0002] In today's world, waste paper recycling has produced huge economic and environmental benefits in terms of reducing pollution, improving the environment, and saving resources and energy. It is an important aspect to achieve sustainable development of the paper industry and society. Therefore, it is called It is called "urban forest" industry. my country is the world's largest importer and consumer of waste paper, but the domestic waste paper recovery rate is significantly lower than the world average level. At this stage, the recovery and utilization of waste paper in developed countries in the world has already reached a certain level in terms of scale and technology. At a very high level, the recycling of waste paper has gra...

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Problems solved by technology

[0005] Chinese patent CN103949237A discloses a preparation method of carbon fiber and graphene axial composite nanomaterials, using cellulose and urea, cyanamide or cyanic acid as raw materials, and cellulose and urea, cyanamide or cyanic acid in a mass ratio of 100: 1~1:1000 mixing, and then placed under the protection of nitrogen for calcination, the temperature range of calcination is controlled to be 700℃~120℃, and finally the carbon fiber and graphene axial composite nanomaterial can be obtained by natural cooling, but the patent uses cellulose As raw materials, the obtained carbon fiber and graphene axial composite nanomaterials are difficult to process and apply

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