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Graphene water-borne heating film conductive slurry

A conductive paste, alkene water technology, applied in heating element materials, electric heating devices, electrical components, etc., can solve the problems of agglomeration, difficult dispersion, poor compatibility, etc., achieve thin coating thickness, high energy conversion, high heat effect of radiation

Inactive Publication Date: 2020-02-07
深圳天元羲王材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the present invention provides a graphene water-based heating film conductive paste. Firstly, through the modification of graphene, it solves the problems caused by factors such as polarity and surface chemical groups and between substrates. The compatibility is very poor, which makes it difficult to disperse in the matrix, and the problem of agglomeration often occurs. At the same time, through the water-based binder, the three slurries can be mixed together to form a stable dispersion system, thereby obtaining a high conductivity rate of conductive paste

Method used

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  • Graphene water-borne heating film conductive slurry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Preparation of slurry A, the choice of tube diameter is 7-15nm, tube length 8g of carbon nanotubes of 5-15um, the first dispersant is carbon nanotube dispersant (TNWDIS) 1.2g, deionized water 90.8g, then carry out Mix and stir, carry out pre-dispersion treatment, after standing for 5 minutes, stir at a speed of 600-1200r / min, stir for 10 minutes, and obtain about 100g of finely dispersed slurry A.

[0026] The particle size is 15-20nm and the specific surface area is greater than 1000m 2 / g spherical conductive carbon black 12g, amino acid ester copolymer dispersant 1.5g, deionized water 86.5g, mix and stir first, carry out pre-dispersion treatment, after standing for 5 minutes, stir with 600-1200r / min speed, After stirring for 10 minutes, about 100 g of finely dispersed slurry B was obtained.

[0027] Weigh 8.5g of modified graphene, 0.8g of polyethylene wax, 0.4g of one or more of polytetrafluoroethylene or polyvinylidene fluoride; 90.3g of deionized water, grind and...

Embodiment 2

[0029] Preparation of slurry A, the choice of tube diameter is 7-15nm, 5g of carbon nanotubes with a tube length of 5-15um, the first dispersant is 1g of carbon nanotube dispersant (TNWDIS), 94g of deionized water, and then mixed and stirred , carry out pre-dispersion treatment, after standing for 5 minutes, stir at a speed of 600-1200r / min, stir for 10 minutes, and obtain about 100g of finely dispersed slurry A.

[0030] The particle size is 15-20nm and the specific surface area is greater than 1000m 2 / g of spherical conductive carbon black 10g, amino acid ester copolymer dispersant 1.5g, deionized water 88.5g, mix and stir first, carry out pre-dispersion treatment, after standing for 5 minutes, stir with 600-1200r / min speed, After stirring for 10 minutes, about 100 g of finely dispersed slurry B was obtained.

[0031] Weigh 7g of modified graphene, 0.6g of polyethylene wax, 0.3g of one or more of polytetrafluoroethylene or polyvinylidene fluoride; 92.1g of deionized water,...

Embodiment 3

[0033] Preparation of slurry A, the choice of tube diameter is 7-15nm, 10g of carbon nanotubes with a tube length of 5-15um, the first dispersant is 3g of carbon nanotube dispersant (TNWDIS), 87g of deionized water, and then mixed and stirred , carry out pre-dispersion treatment, after standing for 5 minutes, stir at a speed of 600-1200r / min, stir for 10 minutes, and obtain about 100g of finely dispersed slurry A.

[0034] The particle size is 15-20nm and the specific surface area is greater than 1000m 2 / g of spherical conductive carbon black 15g, amino acid ester copolymer dispersant 3g, deionized water 82g, mix and stir first, carry out pre-dispersion treatment, stir with 600-1200r / min speed after standing for 5 minutes, stir 10 Minutes, about 100 g of finely dispersed slurry B was obtained.

[0035] Weigh 10g of modified graphene, 1g of polyethylene, 0.5g of one or more of polytetrafluoroethylene or polyvinylidene fluoride; deionized water is 88.5g, grind and disperse afte...

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Abstract

The invention discloses a graphene water-borne heating film conductive slurry. The graphene water-borne heating film conductive paste is characterized by being prepared by mixing three different slurry which are slurry A, slurry B and slurry C; the slurry A is prepared from carbon nanotubes, a first dispersant and deionized water; the slurry B is prepared from spherical conductive carbon black, asecond dispersant and deionized water; the slurry C is prepared from graphene, a third dispersant, a binder and deionized water; and a water-borne binder is selected, and the three slurry are subjected to compound preparation to finally obtain the graphene water-borne heating film conductive slurry. First, graphene is modified, and epoxy resin monomer is added for emulsification to enable the modified grapheme to be more cohesive; and according to the characteristics of the carbon nanotubes, the carbon nanotube dispersant is added to change the surface activity, so that the carbon nanotubes are connected with other groups more conveniently, and finally different water-borne binders are choosed according to the type of coating so as to obtain the conductive slurry with high-conductivity, thinner coating thickness, more water-borne and environment protection.

Description

technical field [0001] The invention relates to the field of conductive paste, in particular to a conductive paste for graphene water-based heating film. Background technique [0002] Conductive coatings are special coatings that are coated on high-resistivity polymer materials to enable them to conduct current and eliminate accumulated static charges. They can be coated on the surface or inside of substrates of any shape. Conductive coatings can be divided into two categories according to composition and conductive mechanism: structural type (also known as intrinsic type) conductive coatings and composite type (also known as additive type) conductive coatings. The conductive material of the intrinsic conductive coating is the polymer itself. The conductive material of the additive conductive coating is a conductive substance (metal, graphite, etc.) added to the insulating polymer, and the conductive effect of the conductive substance is used to make the polymer conductive....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/14H05B3/34
CPCH05B3/145H05B3/34
Inventor 黄礼贵简先仲
Owner 深圳天元羲王材料科技有限公司
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