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Preparation method of conductive coating composition

A conductive coating and composition technology, applied in the field of preparation of conductive coating composition, can solve the problem of price, dispersibility, transparency, stability commercialization failure, surfactant is easily affected by the season, and the conductivity of the coating part Inhomogeneity and other problems, to achieve a good buffer effect, avoid peeling off, strong adhesion effect

Inactive Publication Date: 2018-03-13
汪涛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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
[0005] In addition, most of the existing conductive coating compositions are fluid, so it is necessary to prevent excessive precipitation during storage, and to prevent leakage due to bumping during transportation, which is inconvenient to use

Method used

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  • Preparation method of conductive coating composition
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Examples

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Embodiment 1

[0028] 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;

[0029] The preparation method of above-mentioned conductive coating composition comprises:

[0030] (1) Preparation of magnetically modified cellulose

[0031] 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;

[0032] (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

[0044] 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;

[0045] The preparation method of above-mentioned conductive coating composition comprises:

[0046] (1) Preparation of magnetically modified cellulose

[0047] 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;

[0048] (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 coatings, in particular to a preparation method of a conductive coating composition. The preparation method comprises the following steps of: (1) preparing magnetic modified cellulose; (2) dispersing ferromagnetic metal powder into an organic solvent, performing ultrasonic treatment for 30-60min, adding glass powder under a stirring condition, uniformly stirring the mixture, adding the magnetically modified cellulose in the step (1), and continuously performing ultrasonic treatment for 1-2h to obtain a mixture; and (3) blow-drying the mixture ofthe step (2) to a solid content of 91-95% by using compressed air, then transferring the mixture to a kneader for kneading, and adjusting the solid content to 85-90% by using a solvent. The preparation method of the conductive coating composition provided by the invention has the advantages that the final conductive coating is a paste, a precipitation phenomenon of a traditional fluid conductive coating does not occur in a storage process, and the leakage problem does not need to be worried in a transportation process, so that the use of the conductive coating is facilitated.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a preparation method of 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 a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D163/00C09D125/14C09D133/04C09D175/04C09D5/24C09D5/23C09D7/65
Inventor 汪涛
Owner 汪涛
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