Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Graphene heating ink, preparation method and application thereof

A graphene and ink technology, applied in inks, applications, household appliances, etc., can solve the problems of powder not easy to disperse, unstable dispersion, high local temperature, improve thermal stability and mechanical properties, improve dispersibility, electrical conductivity Sex-promoting effects

Active Publication Date: 2021-03-19
SU ZHOU CSTAR MATERIAL TECH CO LTD
View PDF8 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The prior art with the Chinese patent announcement number CN103338538A disclosed a graphene radiation heating film and its preparation method and application on October 2, 2013. The patent improves the electrothermal conversion efficiency, high power and high hardness of the electrothermal film. Unfoldable and other aspects have been significantly improved, but the heating film has the following problems: once the surface of the heating film is covered during use, the heat cannot be dissipated in time, which will inevitably lead to excessive local temperature and excessive potential risk factors
[0007] The prior art of Chinese Patent No. CN103607795A disclosed a method for preparing a graphene heating film on February 26, 2014. The patent prepared a low-voltage, adjustable-size graphene heating film through a simple and easy-to-control method , the heating is uniform in a relatively small area, but in the case of a relatively large heating area or under the cover, the heat cannot be dissipated in time, which will lead to excessive local temperature, which is likely to cause safety hazards
[0008] The prior art with the Chinese patent announcement number CN103476158A disclosed the PTC composite material heating film and its preparation method and application on June 3, 2015. The patent obtains PTC characteristics by compounding conductive fillers and crystalline or semi-crystalline polymer composite materials. Composite materials, but because of the use of crystalline or semi-crystalline polymer materials, it relies on the thermal expansion and contraction of the polymer material itself to adjust the resistance, which is determined by the organic polymer material and structure mechanism. After each flow impact, the resistance value It becomes larger and cannot be restored to the original value, and the reversibility is not good, and when the high-voltage and high-current pulse impacts, the outer package is easy to burst, which greatly shortens the service life of the heating film
Although the patent adds the PTC function of the graphene heating film, the PTC functional material used is either highly toxic or uses lanthanides, actinides and other group elements, which are more expensive and are powders that are not easy to disperse in ink. , there is a serious dispersion instability problem, and this patent only uses a conventional stirring method, there is a problem of batch instability, which is not conducive to industrial application

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Graphene heating ink, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] This embodiment provides a kind of graphene heating ink, its raw material comprises: graphene powder 18%, polysilazane solution 30%, polyvinylpyrrolidone PVP 1.0%, hydrophobically modified cellulose in terms of mass percentage Thickener 0.7%, modified polycarbodiimide crosslinking agent 1.8%, polyurethane resin 5%, polyether modified silicone oil 0.3%, and the balance is N,N-dimethylformamide.

[0045] The preparation method includes: weighing each raw material according to the formula, first fully stirring and mixing the graphene powder and polysilazane solution, after mixing evenly, adding polyvinylpyrrolidone PVP, hydrophobic modified cellulose Thickener, modified polycarbodiimide crosslinking agent, polyurethane resin, polyether modified silicone oil, N,N-dimethylformamide in the remaining mass percentage, fully stirred, and stood for 30 minutes to obtain the obtained The graphene heating ink described above.

Embodiment 2

[0047] This embodiment provides a kind of graphene heating ink, its raw material comprises: 15% of graphene powder, 30% of polysilazane solution, 1.2% of hexadecyltrimethylammonium bromide, Hydrophobic modified cellulose thickener 0.8%, modified polycarbodiimide crosslinking agent 1.8%, polyurethane resin 6%, polyether modified silicone oil 0.5%, the balance is N,N-dimethylformamide .

[0048] The preparation method comprises: weighing each raw material according to the formula, fully stirring and mixing the graphene powder and the polysilazane solution first, and after mixing evenly, adding cetyltrimethylammonium bromide in turn during the stirring process, Hydrophobic modified cellulose thickener, modified polycarbodiimide crosslinking agent, polyurethane resin, polyether modified silicone oil, N,N-dimethylformamide in the remaining mass percentage, fully stirred, let stand In 30 minutes, the graphene heating ink was obtained.

Embodiment 3

[0050] This embodiment provides a kind of graphene heating ink, its raw material comprises: 10% of graphene powder, 30% of polysilazane solution, 1.5% of polyvinylpyrrolidone PVP, hydrophobically modified cellulose Thickener 1.0%, modified polycarbodiimide crosslinking agent 2.0%, polyurethane resin 8%, polyether modified silicone oil 0.6%, and the balance is N,N-dimethylformamide.

[0051] The preparation method includes: weighing each raw material according to the formula, first fully stirring and mixing the graphene powder and polysilazane solution, after mixing evenly, adding polyvinylpyrrolidone PVP, hydrophobic modified cellulose Thickener, modified polycarbodiimide crosslinking agent, polyurethane resin, polyether modified silicone oil, N,N-dimethylformamide in the remaining mass percentage, fully stirred, and stood for 30 minutes to obtain the obtained The graphene heating ink described above.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses graphene heating ink, a preparation method and application thereof. The graphene heating ink comprises a resin matrix, conductive filler, an assistant and a solvent, wherein the conductive filler comprises graphene, the resin matrix is composed of an organic polymer and polysilazane in a mass ratio of 1:0.08-1.5, and the graphene heating ink further comprises a cross-linking agent; the preparation method comprises the following steps of: stirring and dispersing graphene in a powder form and polysilazane in a polysilazane solution form for fully mixing, and then adding the rest raw materials under stirring to obtain the graphene heating ink. The invention also relates to an electric heating film prepared from the ink, on the premise that excellent conductivity at a low temperature is guaranteed, the characteristic that the resistance is greatly improved at a high temperature is achieved, then self-temperature-limiting is achieved, meanwhile, when the electric heating film returns to a normal temperature, the resistance value of a material is not greatly changed, and reversibility is good, therefore, the recycling performance and the safety of the electric heating film are improved.

Description

technical field [0001] The invention belongs to the field of electrothermal materials, in particular to a graphene electrothermal film, in particular to a graphene heating ink and its preparation method and application. Background technique [0002] The rapid development of society is based on the serious consumption of natural resources. As people put forward higher and higher requirements for the quality of life, such as: good heating effect, high safety, energy saving and environmental protection, etc. At present, there are mainly two heating methods, one is coal heating, and the other is electric heating. In the past two decades, the intensification of environmental pollution has seriously affected our lives and endangered our health. Therefore, electric heating can effectively reduce the consumption of coal resources, and at the same time protect our safety and the environment. However, while meeting people's heating needs, it is necessary to continuously improve the c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/102C09D11/107C09D11/52C09D11/03H05B3/10H05B3/14H05B3/34
CPCC09D11/102C09D11/107C09D11/52C09D11/03H05B3/10H05B3/145H05B3/34Y02B30/00
Inventor 蔺洪振程双王健李麟阁李付锦
Owner SU ZHOU CSTAR MATERIAL TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products