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High-temperature-resistant, solvent-resistant silicone-rubber-based flexible graphene heating film

A flexible graphite and olefin heating film technology, applied in the direction of electric heating devices, ohmic resistance heating, heating element materials, etc., can solve the problems of high temperature resistance, solvents, and easy damage to conductive networks, so as to improve compatibility, maintain flexibility and Variability, effect of improving mechanical properties

Inactive Publication Date: 2018-10-23
JIANGNAN GRAPHENE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the manufactured product has a certain degree of flexibility, under certain deformation, the conductive network is easily damaged, and it is also not resistant to high temperature and solvents.

Method used

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  • High-temperature-resistant, solvent-resistant silicone-rubber-based flexible graphene heating film
  • High-temperature-resistant, solvent-resistant silicone-rubber-based flexible graphene heating film
  • High-temperature-resistant, solvent-resistant silicone-rubber-based flexible graphene heating film

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Example 1. Weigh 100 parts of multilayer graphene powder with a sheet diameter of 1 μm, impregnate it with a silicone resin / carbitol acetate solution, filter it, and dry it at room temperature to obtain a graphene powder coated with silicone resin. Add 100 parts of methyltrifluoropropyl double-blocked vinyl polyorganosiloxane with a viscosity (25°C) of 2000mPa·s into the kneader, 20 parts of the graphene powder after the coating treatment above, and 10 parts of titanic acid Ester treated specific surface area is 10m 2 Acetylene carbon black above / g, stirred at normal temperature and pressure for 0.5h, then heated up to 150°C, stirred at low pressure for 2h, the slurry was ground on a three-roller mill for 2-3 times, transferred to a planetary mixer, and added 30 parts of normal sunflower Alkanes, 5 parts of methyl hydrogen MQ silicone resin, 0.5 parts of platinum-vinylsiloxane complex catalyst, mixed uniformly at room temperature to obtain a dispersed slurry, filtered ...

Embodiment 2

[0024] Embodiment 2 is the same as Embodiment 1, except that the multilayer graphene powder with a sheet diameter of 5 μm is used instead of the multilayer graphene powder with a sheet diameter of 1 μm.

Embodiment 3

[0025] Embodiment 3 is the same as Embodiment 1, except that the multilayer graphene powder with a sheet diameter of 20 μm is used instead of the multilayer graphene powder with a sheet diameter of 1 μm.

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Abstract

The invention relates to the manufacturing method of a high-temperature-resistant, solvent-resistant silicone-rubber-based flexible graphene heating film. The method comprises the following steps of adding the graphene of silicon resin cladding processing and a heat-resistant additive in a solvent-resistant silicone rubber; simultaneously, stirring and acquiring an uniformly dispersed silicone-rubber-based graphene dispersion solution; adding a cross-linking agent and a catalyst in the dispersion solution, mixing uniformly, and then vacuumizing and removing bubbles; then, coating on a releasefilm, forming a coating layer with a certain thickness after drying; and then, vulcanizing for 0.5 to 3h at 50 to 200 DEG C; and cooling to a normal temperature, and then acquiring a graphene flexiblehigh-temperature-resistant solvent-resistant silicone rubber composite film. In the invention, a flexible solvent-resistant silicone rubber is taken as a matrix, and the graphene after silicone resincladding processing and the heat resistant additive are taken as fillers; the graphene and a heat-resistant additive are uniformly dispersed in a silicone rubber matrix so that the film is conductive, generates heat, and is high-temperature-resistant and solvent-resistant; and under a low applied voltage, a high surface temperature can be acquired, conductive performance is formed under a low content, and a flexible and deformable conductive heating composite film with good mechanical performance can be manufactured.

Description

technical field [0001] The invention relates to a preparation method of a flexible high temperature resistant and solvent resistant polymer-based conductive heating film, more specifically, a method for preparing a high temperature resistant and solvent resistant silicone rubber based flexible graphene heating film. . Background technique [0002] There are many heating methods and materials currently available, including electric heating, infrared heating, and electromagnetic heating. Due to its high heating efficiency and ease of use, electric heating is widely used. Materials used for electric heating are mainly electrical conductors, wherein electrical conductors include metal conductors and polymer conductors. Due to the ease of preparation, low density and good flexibility, polymer-based conductive composite materials are widely used to make conductive heating materials. The development of society has higher and higher requirements for conductive heating materials. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/14H05B3/36
CPCH05B3/145H05B3/36
Inventor 朱建唐校福汤云
Owner JIANGNAN GRAPHENE RES INST
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