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Automatic temperature limited electric heating ink and preparation method thereof and electric heating device

An electrothermal ink, self-limiting technology, applied in the direction of ink, household appliances, applications, etc., can solve the problem that the electrothermal device needs to be improved, and achieve the effect of long life of PTC effect and good self-limiting effect.

Inactive Publication Date: 2019-07-12
ENN GRAPHENE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the current self-limiting temperature electrothermal ink and its preparation method and electrothermal device still need to be improved.

Method used

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  • Automatic temperature limited electric heating ink and preparation method thereof and electric heating device
  • Automatic temperature limited electric heating ink and preparation method thereof and electric heating device
  • Automatic temperature limited electric heating ink and preparation method thereof and electric heating device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Example 1, Preparation of mercaptopropionic acid as self-limiting temperature electrothermal ink A of temperature-limiting filler

[0070] Preparation of the first preform: adding graphene microflakes: carbon nanotubes: expanded graphite powder: high temperature resistant resin: organic solvent: auxiliary agent = 5:2:10:20:40:2 by weight into the disperser, Pre-disperse for 1 hour, and then grind for 3 hours in a sand mill before use.

[0071] Preparation of the second prefabricated body: under ice-bath conditions, ultrasonically disperse graphene microchips in the NMP solution of PVP, and filter with funnel, wash repeatedly through ethanol and NMP for 5 times to obtain G / PVP powder, and put the above powder in After complete drying at 100°C, ultrasonically disperse in distilled water; take the DBE solution of mercaptopropionic acid (MPA), add it dropwise to the magnetically stirred G / PVP aqueous solution, stir for 30 minutes, let it stand, immediately separate layers, ...

Embodiment 2

[0073] Example 2, Preparation of mercaptopropionic acid as self-limiting temperature electrothermal ink B of temperature-limiting filler

[0074] Other production methods are the same as in Example 1, except that the weight ratio of the components added in the first preform is: graphene microsheets: carbon nanotubes: expanded graphite powder: high temperature resistant resin: organic solvent: Additives = 5:2:10:10:30:2.

Embodiment 3

[0075] Embodiment 3, preparation of mercaptopropionic acid as self-limiting temperature electrothermal ink C of temperature-limiting filler

[0076] The other production methods are the same as in Example 1, except that when preparing the electrothermal ink, the added second preform contains 50 parts by weight of graphene coated with mercaptopropionic acid.

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Abstract

The invention discloses automatic temperature limited electric heating ink and a preparation method thereof and an electric heating device, and specifically provides the automatic temperature limitedelectric heating ink. The automatic temperature limited electric heating ink comprises a conductive filler, a temperature limited filler, high temperature resistant resin, a solvent and an additive, wherein the temperature limited filler comprises organic small molecules having cis-trans-isomers; the organic small molecules are capable of performing reversible cis-trans structure transformation asthe temperature changes. Therefore, the temperature limited filler is capable of automatically adjusting the resistance of the electric heating ink based on the temperature, and as a result, the temperature of the electric heating ink can be intelligently controlled. The electric heating ink is good in automatic temperature limiting effect, high in use safety, and high in flowability, solublenessand other use performances, meets the electric heating performance standards and is applicable to various printing and coating technologies.

Description

technical field [0001] The invention relates to the technical field of electrothermal materials, in particular to a self-limiting temperature electrothermal ink, a preparation method thereof, and an electrothermal device. Background technique [0002] In recent years, electric heating technology has developed rapidly, and products produced using electric heating technology are widely used, such as electric heating film, electric blanket, heated knee pads, heated clothing, etc. Most of the current electric heating products use a thermostat to control the actual heating temperature of the product. This method increases the structural complexity of the electric heating product, and cannot sensitively control the actual temperature of the product. The safety of the product is poor and the cost is high. , poor user experience. At present, using the positive temperature coefficient effect (PTC effect) to realize the self-limiting temperature of electric heating products is a hot ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/52
CPCC09D11/52
Inventor 翟庆斌张佑专李金来
Owner ENN GRAPHENE TECH CO LTD
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