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Conductive coating composition

A technology for conductive coatings and compositions, applied in the field of coatings, can solve the problems of difficulty in obtaining high electrical conductivity, difficult to achieve high electrical conductivity, short conduction time, etc., achieve a good buffer effect, avoid peeling, and improve service life. Effect

Inactive Publication Date: 2018-03-27
汪涛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, such as the preparation of coating liquids using carbon nanotubes, but commercialization failed due to problems such as price, dispersibility, transparency, stability, etc., and problems related to mass production
[0004] In the use method of related surfactants, whether it is internal addition or surface coating, it is difficult to obtain high conductivity, and a predetermined humidity level is required. Therefore, surfactants are easily affected by seasons and can be used in After the molding process is transferred to the product, in order to overcome these limitations, a conductive polymer is made into a paint for forming a coating film, but the disadvantage of this coating film is that the conductive action time is short and the conductivity of the coated part is uneven , and when vacuum molding is performed at a predetermined depth or deeper or when molding complex-shaped products, it is difficult to achieve high conductivity with a substrate coated with a coating film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A conductive paint composition, comprising the following parts by weight: 100 parts by weight of iron powder, 5 parts by weight of lead-free glass powder, 12 parts by weight of magnetically modified cellulose, and 15 parts by weight of acrylic resin;

[0030] The preparation method of above-mentioned conductive coating composition comprises:

[0031] (1) Preparation of magnetically modified cellulose

[0032] Take diethylenetriamine and hydroxymethyl cellulose at a molar ratio of 4:1, react at a temperature of 110°C for 4 hours, and then add Fe prepared by coprecipitation to it. 3 o 4 Particles are used as magnetic particles, ultrasonically treated for 4 hours, then added with acrylic resin, and continued ultrasonically treated for 2 hours to obtain magnetically modified cellulose;

[0033] (2) Take nano-sized iron powder with a particle size of 50nm and micron-sized iron powder with a particle size of 0.3μm in a weight ratio of 1:0.5, and then put them into acetone a...

Embodiment 2

[0036] A conductive coating composition comprising the following parts by weight: 100 parts by weight of nickel powder, 5 parts by weight of lead-free glass powder, 8 parts by weight of magnetically modified cellulose, and 10 parts by weight of epoxy resin;

[0037] The preparation method of above-mentioned conductive coating composition comprises:

[0038] (1) Preparation of magnetically modified cellulose

[0039] Take diethylenetriamine and hydroxymethyl cellulose at a molar ratio of 4:1, react at a temperature of 110°C for 4 hours, and then add Fe prepared by coprecipitation to it. 3 o 4 Particles are used as magnetic particles, ultrasonically treated for 4 hours, then epoxy resin is added, and ultrasonically treated for 1-2 hours to obtain magnetically modified cellulose;

[0040] (2) Take nano-sized nickel powder with a particle size of 30nm and micron-sized nickel powder with a particle size of 0.3μm in a weight ratio of 1:0.4, and then put them into N,N-dimethylforma...

Embodiment 3

[0043] A conductive coating composition comprising the following parts by weight: 100 parts by weight of iron powder, 8 parts by weight of lead-free glass powder, 18 parts by weight of magnetically modified cellulose, and 18 parts by weight of styrene-acrylic emulsion;

[0044] The preparation method of above-mentioned conductive coating composition comprises:

[0045] (1) Preparation of magnetically modified cellulose

[0046] Take diethylenetriamine and hydroxymethyl cellulose at a molar ratio of 4:1, react at a temperature of 118°C for 4 hours, and then add Fe prepared by coprecipitation to it. 3 o 4 Particles are used as magnetic particles, ultrasonically treated for 4 hours, then added with styrene-acrylic emulsion, and continued ultrasonically treated for 2 hours to obtain magnetically modified cellulose;

[0047] (2) Take nano-scale iron powder with a particle size of 80nm and micron-scale iron powder with a particle size of 0.4μm in a weight ratio of 1:0.6, and then ...

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Abstract

The invention relates to the technical field of coating, in particular to a conductive coating composition. The conductive coating composition comprises the following substances in parts by weight: 100 parts of ferromagnetic metal powder, 3 to 10 parts of glass powder, 5 to 20 parts of magnetic modified cellulose, and 8 to 20 parts of organic carriers; the magnetic modified cellulose is a mixtureformed by blending Fe3O4 particles and modified cellulose in a weight ratio of 1: (0.1 to 2); the modified cellulose is hydroxymethyl cellulose subjected to diethylenetriamine modification treatment.According to the conductive coating composition provided by the invention, the modified cellulose loaded with amino covers the surfaces of the magnetic Fe3O4 particles, so that not only can the ferromagnetic metal powder having a conductive effect be absorbed and firmly fixed in a netted structure of the modified cellulose, but also the netted structure of the modified cellulose can buffer an expansion force applied to a conductive coating in a cold-hot environment, the stripping and dropping phenomenon of the coating can be avoided, and the service life of the conductive coating can be prolonged.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a conductive coating composition. Background technique [0002] With the increasing integration of electrical / electronic parts and semiconductor devices, including various household items, office supplies, electrical and electronic products, mobile communication equipment, etc., the above products and devices are seriously damaged due to contamination by dust or particles, static electricity or electromagnetic waves . Dust, particles, static electricity, or electromagnetic waves generated from devices used in assembling, handling, shipping, and packaging these products have a large impact. To reduce this damage, the use of electrically conductive materials enables antistatic properties, static dissipative properties, electrical conductivity, and EMI shielding of these materials used in assembly, handling, shipping, and packaging. [0003] In the prior art, metal materials such...

Claims

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Application Information

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IPC IPC(8): C09D5/24C09D5/23C09D7/62C09D133/00C09D163/00C09D125/14C09D133/04C09D175/04
CPCC09D5/24C08K9/10C08K2003/0843C08K2003/0856C08K2003/0862C08K2003/2275C08K2201/003C08K2201/011C09D5/00C09D125/14C09D133/00C09D143/04C09D163/00C09D175/04
Inventor 汪涛
Owner 汪涛