Preparation method of floor-heating electric heating plate

Abstract

The invention discloses a preparation method of a floor-heating electric heating plate. The method comprises the following steps: (1) preparing gas-phase nano carbon fiber/graphene; (2) preparing gas-phase nano carbon fiber/graphene positive temperature coefficient (PTC) conductive ink; and (3) preparing the floor-heating electric heating plate. The PTC conductive ink is prepared by mixing the following components in parts by mass: 5 parts of carbon black, 5 parts of a gas-phase nano carbon fiber/graphene compound, 10 parts of a PTC polymer material, 20 parts of thermosetting resin, 5 parts ofa dispersing agent, 0.5 part of a defoaming agent, 0.5 part of a flattening agent, 0.5 part of a base material sizing agent, 10 parts of 2-butoxyethanol and 43.5 parts of water. The method is simplein process and is easy to operate, and the prepared floor-heating electric heating plate solves the construction problems such as high-temperature safety, leaked current generated during laying, and the like.

Description

technical field [0001] The invention belongs to the technical field of electric heating plates, and in particular relates to a preparation method of an electric heating plate for floor heating. Background technique [0002] Graphene has excellent electrical conductivity and heat transfer properties and is widely used in lithium ion conductive pastes, electronic products, heat dissipation products and electrothermal film products. [0003] Conductive inks are inks made from conductive materials. In recent years, graphene as an additive raw material has been added to resins to prepare conductive inks. For example, Chinese patent application publication CN1046693897A discloses a conductive ink based on a graphene composite material and a preparation method thereof, which modifies graphene into a functionalized graphene composite material, and improves the affinity between the conductive filler and the resin binder. And the conductive ink with high conductivity at low content ...

AI Technical Summary

Problems solved by technology

The ink used in the traditional floor heating film is ordinary electric heating ink. When using this kind of electric heating film, the power will rise sharply when covering and heat preservation. When the temperature exceeds 80°C, the EVA glue of the film layer will soften, and a large number of bubbles will appear in the film layer, which is easy to cause fire, etc.

The traditional electrothermal film is in the shape of long strips. When laying a large area, it is easy to cause leakage current. When laying the electrothermal film, it is easy to cause tripping, which brings inconvenience to the construction.

In addition, the thickness of the traditional PET film is less than 0.333mm, which is relatively thin, and is easily pierced by the cement mortar during construction, causing the dangerous phenomenon of electric leakage

The use of traditional carbon crystal inks is easy to agglomerate, resulting in a short service life of the film product and increasing the cost of later maintenance

[0005] In summary, the present invention aims at the defects and market demands of the above-mentioned existing electric heating panels, and develops a floor heating electric heating panel, which uses gas-phase nano-carbon fiber / graphene as a conductive filler, and uses a temperature-variable polymer material as a filler to obtain a PTC temperature-variable conductive ink , and use this to prepare electric heating plates, which solves construction problems such as high temperature safety and leakage current generated by laying

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