PTC graphene heating printing ink, preparation method thereof and heating film prepared from PTC graphene heating printing ink

Abstract

The invention discloses PTC graphene heating printing ink and a preparation method thereof. The PTC graphene heating printing ink is prepared from the following components in percentages by mass: 50% to 70% of a binder, 9% to 21% of a solvent, 1% to 3% of an additive, 10% to 20% of a conductive filler and 5% to 20% of a PTC functional material. The preparation method comprises the following steps: (1) firstly stirring and dispersing the binder, the solvent and the additive for 20 to 30 min, then adding the PTC functional material into stirring equipment for stirring for 8 to 12 min, and finally adding the conductive filler for uniform stirring to obtain a coarse paste; and (2) carrying out four to six times of three-roller grinding on the coarse paste so as to obtain the PTC graphene heating printing ink. The invention also discloses a heating film. The heating film comprises an organic polymer base material film, the PTC graphene heating printing ink, a conductive silver paste, conductive copper foil and an organic polymer adhesive film. The PTC function of the graphene heating film is increased, the potential safety hazard problem of an existing graphene heating film is eliminated, and the practicability is improved.

Description

technical field

[0001] The invention belongs to the technical field of novel electrothermal materials, and in particular relates to a PTC graphene heating ink, a preparation method thereof, and a heating film prepared therefrom. Background technique

[0002] ​At present, there are two main types of heating film, one is high-voltage type, which is mainly used in industries such as floor heating, wall painting and industrial insulation; the other type is low-voltage type, which is mainly used in industries such as medical care. Graphene has good electrical conductivity, fast electron mobility, fast heating speed, more energy-saving and environmental protection, and the heating principle of graphene is "life light" 8-15μm far-infrared heating, which has a good health care effect on the human body, so graphene heating ink In far-infrared electric heating film, infrared heater, far-infrared heating clothing, heating cap, heating insole, far-infrared electric blanket, sweat steam ...

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