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

Novel water-based PTC electrothermal coating, and preparation method thereof

An electric heating coating, water-based technology, applied in the direction of polyester coating, polyacetal coating, epoxy resin coating, etc., to achieve the effect of simple preparation and processing, uniform heating, and broad application prospects

Inactive Publication Date: 2018-11-30
中国科学院苏州纳米技术与纳米仿生研究所南昌研究院
View PDF4 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As my country's environmental protection requirements are getting higher and higher, water-based electrothermal ink technology has become an urgent need, but so far there are few reports on water-based PTC, and water-based electrothermal inks with PTC functions have become an urgent need

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The composition and weight percentage of a new type of water-based PTC electrothermal coating are:

[0029] Conductive carbon material: carbon nanotubes 5%

[0030] Polymer powder: polyethylene (glass transition temperature 30°C, particle size 1 micron) 5%

[0031] Dispersant: sodium dodecylbenzenesulfonate 2%

[0032] Leveling agent: BYK333 0.5%

[0033] Wetting agent: BYK191 0.5%

[0034] Other additives 1%

[0035] Water-based binder resin: water-based polyurethane resin 20%

[0036] water balance.

[0037] First, the conductive carbon material, dispersant, and wetting agent are mixed uniformly under stirring according to the proportion, and a uniformly dispersed carbon material aqueous dispersion is prepared through a nano-grinding process, which is left to stand for defoaming and then used for later use. The polymer micropowder and dispersant are added into the water-based binder resin according to the ratio, dispersed by high-speed stirring, and stirred at 3...

Embodiment 2

[0039] The composition and weight percentage of a new type of water-based PTC electrothermal coating are:

[0040] Conductive Carbon Material: Graphene 10%

[0041] Polymer powder: polypropylene (glass transition temperature 40°C, particle size 0.5 microns) 10%

[0042] Dispersant: Triton X100 2%

[0043] Leveling agent: BYK331 0.5%

[0044] Wetting agent: BYK190 0.5%

[0045] Other additives 1%

[0046] Water-based binder resin: water-based acrylic resin 20%

[0047] water balance.

[0048] First, the conductive carbon material, dispersant, and wetting agent are mixed uniformly under stirring according to the proportion, and a uniformly dispersed carbon material aqueous dispersion is prepared through a nano-grinding process, which is left to stand for defoaming and then used for later use. The polymer micropowder and dispersant are added into the water-based binder resin according to the ratio, dispersed by high-speed stirring, and stirred at 3000rpm for 2 hours to obta...

Embodiment 3

[0050] The composition and weight percentage of a new type of water-based PTC electrothermal coating are:

[0051] Conductive carbon material: carbon nanotube 5% + conductive carbon black 5%

[0052] Polymer powder: EVA (glass transition temperature 10°C, particle size 1 micron) 5%

[0053]Dispersant: sodium dodecylbenzenesulfonate 2%

[0054] Leveling agent: BYK378 0.5%

[0055] Wetting agent: BYK180 0.5%

[0056] Other additives 1%

[0057] Water-based binder resin: Water-based alkyd resin 20%

[0058] water balance.

[0059] First, the conductive carbon material, dispersant, and wetting agent are mixed uniformly under stirring according to the proportion, and a uniformly dispersed carbon material aqueous dispersion is prepared through a nano-grinding process, which is left to stand for defoaming and then used for later use. The polymer micropowder and dispersant are added into the water-based binder resin according to the ratio, dispersed by high-speed stirring, and s...

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
Surface resistanceaaaaaaaaaa
Surface resistanceaaaaaaaaaa
Surface resistanceaaaaaaaaaa
Login to View More

Abstract

The invention discloses a novel water-based PTC electrothermal coating, and a preparation method thereof. The novel water-based PTC electrothermal coating is composed of a conductive carbon material,a polymer micro powder, an auxiliary agent, an aqueous bonding resin, and water; wherein the polymer micro powder is a low vitrification point thermoplastic polymer powder. The preparation method comprises following steps: the polymer micro powder is subjected to high speed shearing under the auxiliary action of a dispersant so as to form a stable uniform resin dispersion slurry in the bonding resin system, and nanocarbon conductive slurry processed through grinding dispersion is mixed with the auxiliary agents, and mixing and defoaming are carried out so as to obtain a coating finished product. According to the preparation method, solidification-softening conversion of the low vitrification point thermoplastic polymer powder in thermal circulation is adopted to realize volume expansion, and drive the change of a nanocarbon conductive network, so that the coating internal resistance is changed, positive temperature resistance (PTC) effect is achieved, regulation and control on electrothermal coating frequency is realized.

Description

technical field [0001] The invention relates to a water-based electrothermal ink, in particular to a novel water-based PTC electrothermal paint and a preparation method thereof. Background technique [0002] As the temperature rises, the resistance of conductive carbon materials tends to decrease. This is the negative temperature coefficient effect (NTC), which is extremely harmful in electric heating components and seriously affects its safety. How to overcome its NTC effect can not only improve its safety in use, but also improve heating uniformity and realize power adaptive regulation. The PTC (Positive Temperature Coefficient) effect, that is, the positive temperature coefficient effect, means that the resistance of this material will increase with the increase of temperature. The PTC effect can effectively protect the heating element in the electric heating element. As the temperature rises, the resistance increases and the power decreases, which can realize self-adapt...

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): C09D175/04C09D123/06C09D7/61C09D7/63C09D7/65C09D133/04C09D133/12C09D167/08C09D167/00C09D163/00C09D159/00C09D123/12C09D123/08C09D11/03C09D11/104C09D11/107C09D11/108C09D11/102C09D11/105
CPCC08K2201/011C08K2201/014C08L2205/03C09D7/61C09D7/63C09D7/65C09D7/70C09D11/03C09D11/102C09D11/104C09D11/105C09D11/107C09D11/108C09D133/04C09D163/00C09D167/00C09D167/08C09D175/04C08L23/06C08K13/02C08K3/041C08K5/42C08L23/12C08K3/042C08L23/0853C08K3/04C08L67/00C08L71/02C08K7/06C08L75/04C08L59/00C08L1/28
Inventor 陈名海张永毅李清文张亦驰
Owner 中国科学院苏州纳米技术与纳米仿生研究所南昌研究院
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

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com