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High-dispersity water-based carbon nanotube conductive slurry

A carbon nanotube and conductive paste technology, applied in conductive coatings, polyester coatings, epoxy resin coatings, etc., can solve the problems of lack of active groups, few surface defects, and carbon nanotubes are easily entangled and agglomerated into bundles. Achieve the effect of increasing the bulk density, improving the electrical conductivity, and prolonging the storage and service life.

Inactive Publication Date: 2016-10-26
嘉兴高正新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, since carbon nanotubes are highly polarized, smooth-surfaced inorganic polymer compounds with few surface defects and lack of active groups, there are strong van der Waals forces between carbon nanotubes and its huge specific surface area, which is very High aspect ratio, resulting in carbon nanotubes being easily entangled and agglomerated into bundles under normal circumstances

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～16

[0031] Get each raw material as shown in Table 1, dissolve the water-based dispersant in the water-based solvent to obtain a dispersant solution, and then spray the dispersant solution into high-speed stirred carbon nanotubes (diameter 1-30 nm, length 1-30 nm) by high-pressure spraying method. 100 μm, bulk density 0.02g / mL), the process parameters are as shown in Table 1, after high-speed stirring and mixing, activated carbon nanotubes were obtained;

[0032] Table 1

[0033]

[0034]

[0035] The performance test result of the prepared activated carbon nanotube is as follows table 2

[0036] Table 2

[0037]

[0038]

[0039] The dispersibility test is detected by the following method: Add 10 mg of activated carbon nanotubes prepared in Examples 1 to 16 into 10 mL of water respectively, and disperse ultrasonically for 30 minutes to obtain a suspension, leave it to stand, and when obvious stratification occurs, the recorded time is the storage time , the results ...

Embodiment 17～32

[0042] Mix the activated carbon nanotubes prepared in Examples 1 to 16 with water-soluble resins, water-based solvents, anti-settling agents, and defoamers, and mix them uniformly through ultrasonic or sand milling to obtain the highly dispersed water-based carbon nanotubes. Slurry; the amount of each raw material is shown in Table 3. Embodiments 17-24 adopt ultrasonic technology, and Embodiments 25-32 adopt sand grinding technology.

[0043] The solid content (carbon nanotube content) and performance data of the prepared highly dispersed water-based carbon nanotube conductive paste are shown in Table 4. The storage stability (one year) is tested according to the standard "GB6753.3".

[0044] Spray the highly dispersed water-based carbon nanotube conductive paste prepared in Examples 17 to 32 on the PET substrate, and test the surface of the coating according to "GB / T1410-2006 Test Method for Volume Resistivity and Surface Resistivity of Solid Insulating Materials" The resul...

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Abstract

The invention discloses high-dispersity water-based carbon nanotube conductive slurry. The high-dispersity water-based carbon nanotube conductive slurry comprises, by mass, 10-60 parts of water-soluble resin, 5-40 parts of activated carbon nanotube, 20-70 parts of water-based solvent B, wherein the activated carbon nanotube is obtained by stirring carbon nanotube powder at high speed, dissolving dispersing agent in liquid and spraying the solution into the carbon nanotube powder during the stirring to activate the surface of a carbon nanotube. The high-dispersity water-based carbon nanotube conductive slurry is good in conductivity, good in anti-static property, good in dispersity and capable of being stored for a long time.

Description

1. Technical field [0001] The invention relates to a highly dispersed water-based carbon nanotube conductive paste. 2. Background technology [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. [0003] At present, composite c...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D175/04C09D175/14C09D183/04C09D167/08C09D163/00C09D5/24C09D7/12
CPCC09D133/00C08K3/346C08K3/36C08K7/24C08K9/04C08K9/08C08K13/06C08K2201/011C08L2201/04C08L2205/03C08L2205/035C09D7/61C09D7/70C09D167/08C09D175/04C09D175/14C09D183/04C08L67/08C08L83/04
Inventor 王鹏甄万清
Owner 嘉兴高正新材料科技股份有限公司
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