Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of PTC graphene-based conductive ink and PTC graphene-based conductive ink

A graphene-based, conductive ink technology, applied in the preparation of PTC graphene-based conductive ink, the field of PTC graphene-based conductive ink, can solve the problems of difficult recovery of resistance value, fire, damage to graphene heating coating, etc., to achieve structural Stable, fully functional effects

Pending Publication Date: 2020-09-11
FOSHAN SHUNDE SANBEI ELECTRONICS CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the graphene heating coating prepared by these methods has a fatal flaw: when the local temperature of the graphene heating coating is too high, such as short circuit and other current overload conditions, local excessive temperature caused by uneven heat dissipation, etc., will destroy the graphene heating. coating, and even cause a fire
However, due to the random mixing and adhesion of conductive fillers and PTC functional materials in this PTC graphene heating ink, the square resistance of the graphene heating ink is large, the resistance value is difficult to recover after the glass transition of the resin, and the conductive filler is easy to precipitate after long-term use. Defects such as decreased adhesion between ink and substrate

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
  • Preparation method of PTC graphene-based conductive ink and PTC graphene-based conductive ink
  • Preparation method of PTC graphene-based conductive ink and PTC graphene-based conductive ink
  • Preparation method of PTC graphene-based conductive ink and PTC graphene-based conductive ink

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Preparation of graphene oxide acetone dispersion: provide 500mg of graphite powder, adopt modified Hummers method to prepare graphene oxide (Graphene Oxide, GO). In order to further obtain few-layer graphene oxide, place graphene oxide in an ice-water bath, use an ultrasonic disperser to sonicate for 10 minutes at a power of 250W, repeat once, take the supernatant, centrifuge, and resuspend in acetone to obtain a thickness ranging from 12 to Graphene oxide acetone dispersion liquid with 20 layers and lateral size of 700-1000nm. Centrifugal concentration as required to adjust the concentration of graphene oxide acetone dispersion to 150mg / ml.

[0042] Preparation of titanium quantum dot-doped graphene dispersion: take 500ml of the graphene oxide acetone dispersion prepared above and add 0.05g of phosphomolybdic acid to it, stir at 600rpm for 10h, centrifuge at 15000rpm for 30min, and collect the first precipitate at the bottom of the centrifuge tube and transferred to a...

Embodiment 2

[0048] Preparation of graphene oxide acetone dispersion: provide 500mg of graphite powder, adopt modified Hummers method to prepare graphene oxide (Graphene Oxide, GO). The prepared graphene oxide was further transferred to a high-temperature carbonization furnace for high-temperature carbonization for 30 seconds. Nitrogen was filled in the high-temperature carbonization furnace, and the temperature of the high-temperature carbonization furnace was 1200 ° C. In order to further obtain few-layer graphene oxide, place the graphene oxide expanded at high temperature in an ice-water bath, use an ultrasonic disperser to sonicate for 20 minutes at a power of 250W, repeat once, take the supernatant, centrifuge, and resuspend in acetone. A graphene oxide acetone dispersion liquid with a thickness ranging from 8 to 15 layers and a lateral dimension of 700 to 1000 nm. Concentrate by centrifugation as required to adjust the concentration of the graphene oxide acetone dispersion to 150 mg...

Embodiment 3

[0055] Preparation of titanium quantum dot-doped graphene dispersion: take 500ml of the graphene oxide acetone dispersion prepared in Example 2 above and add 0.2g of silicotungstic acid to it, and ultrasonically 30min the graphene oxide acetone dispersion in a water bath with a water bath temperature of 25 ℃. After sonication, the graphene oxide acetone dispersion was stirred at 600rpm for 10h, then centrifuged at 15000rpm for 30min, and the first precipitate at the bottom of the centrifuge tube was collected and transferred to a 60°C drying oven for drying for 120min to obtain a dried first precipitate. The above first precipitate was resuspended with 100ml of acetone and 0.2g of titanium acetylacetonate was added, stirred again at 600rpm for 10h, mixed and centrifuged at 15000rpm for 30min, the second precipitate at the bottom of the centrifuge tube was collected and transferred to a 60°C drying oven for 120min to obtain Dry the second precipitate. Put the second precipitat...

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

PropertyMeasurementUnit
Resistanceaaaaaaaaaa
Login to View More

Abstract

The invention provides a preparation method of PTC graphene-based conductive ink. The preparation method comprises the following steps in parts by weight: preparing a titanium quantum dot doped graphene dispersion liquid, preparing titanium quantum dot doped graphene-carbon black paste, preparing a PTC mixed liquid, preparing a titanium quantum dot doped graphene-based mixed liquid and preparing the PTC graphene-based conductive ink. The PA10T modified by the styrene-acrylonitrile-maleic anhydride copolymer has a proper glass transition temperature range and adhesion capability; on one hand, glass transition of the PTC graphene-based conductive ink in a proper temperature range is realized to realize PTC protection, and on the other hand, the overall anti-stripping effect of the ink is improved. The invention also provides the PTC graphene-based conductive ink prepared by adopting the preparation method of the PTC graphene-based conductive ink.

Description

technical field [0001] The present invention relates to ink printing technology field, be specifically related to a kind of preparation method of PTC graphene-based conductive ink, the present invention also relates to the PTC graphene-based conductive ink prepared by the preparation method of above-mentioned PTC graphene-based conductive ink. Background technique [0002] Graphene is a carbon atom through sp 2 The hybrid orbitals form a hexagonal two-dimensional nanomaterial with a honeycomb lattice structure and only one layer of carbon atom thickness. The unique structure of graphene endows it with many excellent properties, such as high theoretical specific surface area (2630m 2 / g), ultra-high electron mobility (~200000cm 2 / v.s), high thermal conductivity (5300W / m.K), high Young's modulus (1.0TPa) and high light transmittance (~97.7%), etc. With its structure and performance advantages, graphene has great application prospects in energy storage and conversion device...

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
IPC IPC(8): C09D11/52C09D11/102C09D11/106C09D11/03
CPCC09D11/52C09D11/102C09D11/106C09D11/03
Inventor 李明吴立刚曾垂彬李正博
Owner FOSHAN SHUNDE SANBEI ELECTRONICS CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com