Method for preparing functional carbon fiber composite electrothermal paper

Abstract

The invention relates to a method for preparing functional carbon fiber composite electrothermal paper. The method comprises the following steps of: (1) preparing functional carbon fibers; (2) preparing papermaking slurry; (3) making paper; and (4) performing post-treatment. The functional carbon fibers are prepared by carrying a functional body on the surface of an activated carbon fiber; wet papermaking is executed, so that functionalization of the functional carbon fiber composite electrothermal paper is realized; compared with the conventional functionalization method for the carbon fiber composite electrothermal paper, the method has the advantages that the problems of large using amount of functional powder bodies and high waste during preparation are solved; during preparation, the problems of large using amount of wet papermaking technological auxiliaries and severe water pollution are solved; the method is environment-friendly and energy-saving; and the prepared functional carbon fiber composite electrothermal paper has the advantages of high functionalization efficiency, obvious effect, durability and stability.

Description

technical field [0001] The invention relates to a preparation method of carbon fiber composite electric heating paper, in particular to a preparation method of functionalized carbon fiber composite electric heating paper. Background technique [0002] Carbon fiber paper is a functional paper with special properties produced by using carbon fiber or activated carbon fiber and carbon fiber or activated carbon fiber mixed with other plant or non-plant fibers. Carbon fiber paper has many excellent properties, such as electrical conductivity, thermal conductivity, porosity, adsorption, etc., so it is widely used in energy, military, environmental protection, civil engineering, electronic appliances, heating and other fields. [0003] In recent years, with the continuous reduction of the cost of carbon fiber, the excellent electrical conductivity and electrothermal properties of carbon fiber paper have attracted more and more attention in the field of civil electric heating. The ...

AI Technical Summary

Problems solved by technology

The advantages of these methods are that they are simple and easy to operate, and have good functionalization effects; but their disadvantages are also very obvious, for example, the method of filling functional powder may lead to the decline of the mechanical properties of carbon fiber electric heating paper, and at the same time, the functional filler and fiber There is only a physical connection between them, so the functional powder will gradually fall off and lose over time, resulting in a decline in the functionalization effect. In addition, the particle size of the functional filling powder is small, and the netting rate is low in the process of wet papermaking. Seriously, huge waste will be generated in the preparation process; another example is that after impregnating carbon fiber electric heating paper with heat-resistant and flame-retardant resin, although it has good flame-retardant performance, it loses the original light and soft characteristics of the paper

[0007] In addition, in the existing wet papermaking process of carbon paper, due to the need to use a large amount of fiber dispersant and wet strengthening agent in the slurry preparation process, it will not only cause large water pollution, but also have a large amount of additives. , serious waste, it is difficult to adapt to the requirements of green and energy-saving circular economy development