CN114032008A - Solvent-resistant conductive coating of single-walled nanotube and preparation method thereof - Google Patents
Solvent-resistant conductive coating of single-walled nanotube and preparation method thereof Download PDFInfo
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- CN114032008A CN114032008A CN202111565318.0A CN202111565318A CN114032008A CN 114032008 A CN114032008 A CN 114032008A CN 202111565318 A CN202111565318 A CN 202111565318A CN 114032008 A CN114032008 A CN 114032008A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
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Abstract
The invention provides a solvent-resistant conductive coating of a single-walled nanotube and a preparation method thereof, belonging to the technical field of conductive coatings. The solvent-resistant conductive coating of the single-walled nanotube is prepared by firstly preparing a base material, wherein the base material comprises epoxy resin, the single-walled nanotube, a reactive diluent, an auxiliary agent and a filler, and mixing the prepared base material with modified amine according to a certain proportion. The conductive coating has the characteristics of low VOC, stable resistance and resistance to strong solvents such as methanol, acetone and the like, and can be widely applied to product storage tanks in petrochemical industry.
Description
Technical Field
The invention relates to the technical field of conductive coatings, in particular to a single-walled nanotube solvent-resistant conductive coating and a preparation method thereof.
Background
With the increasing environmental protection situation, higher requirements are put forward on environmental protection. The VOC content of the coating on the inner wall of the existing petrochemical storage tank is much higher than 300, and the resistance of the inner wall of the storage tank is unstable even rises to more than 1000 omega when the inner wall of the storage tank is soaked in a solvent for a long time. The increase of the resistance of the inner wall of the storage tank brings explosion risk to the storage tank, so that how to obtain the conductive coating with low VOC and stable resistance is a technical problem which needs to be solved urgently at present.
Disclosure of Invention
The invention aims to provide a conductive coating with low VOC and stable resistance, in particular to a solvent-resistant conductive coating of a single-walled nanotube and a preparation method thereof.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a solvent-resistant conductive coating for a single-walled nanotube, which comprises the following components in percentage by mass of 4-6: 1, base stock and modified amine;
the base material comprises the following components in parts by mass:
further, the modified amine comprises one or more of air 2280, EH-451K and Henscman 2973.
Further, the base material also comprises 5-10 parts of pigment.
Further, the epoxy resin is one or more of 128 epoxy resin, 170 resin and 127 resin.
Further, the reactive diluent comprises one or more of butanediol diglycidyl ether, 1,6 hexanediol diglycidyl ether and trimethylolpropane triglycidyl ether.
Further, the auxiliary agent is a thixotropic agent, a dispersing agent and an antifoaming agent, and the mass ratio of the thixotropic agent to the dispersing agent to the antifoaming agent is 1-2: 0.5-1: 0.1 to 0.3.
Further, the filler comprises feldspar powder and/or mica.
The invention provides a preparation method of a single-walled nanotube solvent-resistant conductive coating, which comprises the following steps:
1) sequentially adding an active diluent and the single-walled nanotubes into epoxy resin and mixing to obtain a mixture;
2) adding the raw materials except the modified amine into the mixture, and mixing and sanding to obtain a base material;
3) and adding the modified amine into the base material to obtain the conductive coating.
Further, in the step 1), the mixing speed is 1200-1500 r/min, and the mixing time is 20-40 min.
Further, in the step 2), the mixing speed is 900-1200 r/min, and the mixing time is 0.5-1.5 h; the fineness of the base material after sanding is less than or equal to 40 mu m.
The invention has the beneficial effects that:
the invention is non-toxic and environment-friendly and has very strong corrosion resistance. Compared with the existing products in the market:
1. the product is a solvent-free product, is not flammable and explosive, and has no potential safety hazard in the process of storage and use.
2. The product has no pungent odor, and is more beneficial to the health of workers in the spraying process.
3. The product has extremely low VOC content, and is more beneficial to controlling carbon emission.
4. The product has strong corrosion resistance, can be applied to ketone and arene storage tanks, saves a large amount of cost for customers, and effectively solves the problems that the corrosion resistance is not enough at the present stage and the annual corrosion loss of a special solvent storage tank is very large.
5. The product has stable resistance, and avoids the storage tank explosion caused by static electricity.
Detailed Description
The invention provides a solvent-resistant conductive coating for a single-walled nanotube, which comprises the following components in percentage by mass of 4-6: 1, base stock and modified amine;
the base material comprises the following components in parts by mass:
in the invention, the modified amine comprises one or more of air 2280, EH-451K and Henscman 2973, preferably EH-451K and/or Henscman 2973, and more preferably Henscman 2973.
In the invention, the mass ratio of the base material to the modified amine is preferably 5-6: 1, more preferably 5: 1.
in the invention, the base material also comprises 5-10 parts of pigment, preferably 6-9 parts, and further preferably 7-8 parts; the pigment is preferably titanium dioxide and/or phthalocyanine blue.
In the invention, the content of the epoxy resin is 40-50 parts, preferably 42-48 parts, and more preferably 45 parts; in the invention, the epoxy resin is one or more of 128 epoxy resin, 170 resin and 127 resin, preferably 28 epoxy resin and/or 170 resin, and more preferably 28 epoxy resin.
In the present invention, the content of the single-walled nanotubes is 1 to 5 parts, preferably 2 to 4 parts, and more preferably 3 parts.
In the invention, the content of the reactive diluent is 5-10 parts, preferably 6-9 parts, and more preferably 7-8 parts; in the invention, the reactive diluent comprises one or more of butanediol diglycidyl ether, 1,6 hexanediol diglycidyl ether and trimethylolpropane triglycidyl ether, preferably butanediol diglycidyl ether and/or 1,6 hexanediol diglycidyl ether, and more preferably butanediol diglycidyl ether.
In the invention, the content of the auxiliary agent is 1-4 parts, preferably 2-3 parts, and more preferably 2.5 parts; in the invention, the auxiliary agent is a thixotropic agent, a dispersing agent and a defoaming agent, the thixotropic agent comprises one or more of organic soil, fumed silica and polyamide wax powder, and the fumed silica is preferred; the dispersant comprises carboxylate and/or acrylate, preferably sodium carboxylate; the defoaming agent contains organic silicon and/or high polymer, preferably organic silane; the mass ratio of the thixotropic agent to the dispersing agent to the defoaming agent is 1-2: 0.5-1: 0.1 to 0.3, preferably 1.5: 0.8: 0.2.
in the invention, the content of the filler is 20-30 parts, preferably 22-28 parts, and more preferably 25 parts; the filler comprises feldspar powder and/or mica, preferably mica.
The invention provides a preparation method of a single-walled nanotube solvent-resistant conductive coating, which comprises the following steps:
1) sequentially adding an active diluent and the single-walled nanotubes into epoxy resin and mixing to obtain a mixture;
2) adding the raw materials except the modified amine into the mixture, and mixing and sanding to obtain a base material;
3) and adding the modified amine into the base material to obtain the conductive coating.
In the invention, in the step 1), the mixing speed is 1200-1500 r/min, and the mixing time is 20-40 min; preferably, the mixing rotating speed is 1300-1400 r/min, and the mixing time is 25-35 min; further preferably, the mixing speed is 1450r/min and the mixing time is 30 min.
In the invention, in the step 2), the mixing speed is 900-1200 r/min, and the mixing time is 0.5-1.5 h; preferably, the mixing rotating speed is 1000-1100 r/min, and the mixing time is 0.8-1.5 h; more preferably, the rotation speed of mixing is 1050r/min, and the mixing time is 1.0 h.
In the invention, the fineness of the base material after sanding is less than or equal to 40 μm, preferably less than or equal to 30 μm.
The technical solutions provided by the present invention are described in detail below with reference to examples, but they should not be construed as limiting the scope of the present invention.
Example 1
The composition of the base material is as follows:
sequentially adding acrylic acid and the single-walled nanotubes into 128 epoxy resin and mixing to obtain a mixture, wherein the mixing rotating speed is 1200r/min, and the mixing time is 20 min;
adding the other raw materials except the modified amine into the mixture, and mixing and sanding the mixture to obtain a base material, wherein the mixing rotating speed is 900r/min, the mixing time is 1.0h, and the fineness of the base material is 30 mu m;
adding modified amine air 2280 into the base material, and mixing to obtain the conductive coating, wherein the mass ratio of the air 2280 to the base material is 1: 4. the results of performance tests performed on the conductive paint are shown in table 1 below.
Example 2
The composition of the base material is as follows:
sequentially adding acrylic acid and the single-walled nanotubes into 128 epoxy resin and mixing to obtain a mixture, wherein the mixing rotating speed is 1400r/min and the mixing time is 30 min;
adding the other raw materials except the modified amine into the mixture, and mixing and sanding the mixture to obtain a base material, wherein the mixing rotating speed is 1000r/min, the mixing time is 1.0h, and the fineness of the base material is 28 micrometers;
adding the modified amine EH-451K into the base material, and mixing to obtain the conductive coating, wherein the mass ratio of the EH-451K to the base material is 1: 5. the results of performance tests performed on the conductive paint are shown in table 1 below.
Example 3
The composition of the base material is as follows:
sequentially adding acrylic acid and the single-walled nanotubes into 128 epoxy resin and mixing to obtain a mixture, wherein the mixing rotating speed is 1300r/min, and the mixing time is 35 min;
adding the other raw materials except the modified amine into the mixture, and mixing and sanding the mixture to obtain a base material, wherein the mixing speed is 1100r/min, the mixing time is 1.5h, and the fineness of the base material is 25 mu m;
adding the modified amine Henschel 2973 into the base material, and mixing to obtain the conductive coating, wherein the mass ratio of the Henschel 2973 to the base material is 1: 6. the results of performance tests performed on the conductive paint are shown in table 1 below.
Coating the conductive coating obtained in the embodiment 1 on the inner wall of a carbon tetrachloride storage tank, coating the conductive coating obtained in the embodiment 2 on the inner wall of a styrene storage tank, and coating the conductive coating obtained in the embodiment 3 on the inner wall of the benzene storage tank, respectively testing the surface resistance of the conductive coatings obtained in the embodiments 1 to 3 according to the GB 16972 standard, wherein the test results are as shown in the following table 1:
TABLE 1
The embodiment of the invention can know that the conductive coating obtained by adopting the technical scheme of the invention can still keep low resistance after being soaked in a chemical storage tank for a long time (180 days), the resistance stability of the inner wall of the storage tank is obviously improved, the risk of explosion of the storage tank caused by resistance rise is effectively reduced, and the conductive coating has low VOC content, is environment-friendly and does not foam after being soaked in solvents such as dimethylbenzene, methanol, gasoline, cyclohexanone, butyl acetate, ethylene glycol butyl ether and the like.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The solvent-resistant conductive coating for the single-walled nanotube is characterized by comprising the following components in percentage by mass of 4-6: 1, base stock and modified amine;
the base material comprises the following components in parts by mass:
2. the conductive paint of claim 1, wherein the modified amine comprises one or more of air 2280, EH-451K, and hensman 2973.
3. The conductive paint as claimed in claim 2, wherein the base material further comprises 5-10 parts of a pigment.
4. The conductive paint as claimed in claim 3, wherein the epoxy resin is one or more of 128 epoxy resin, 170 resin and 127 resin.
5. The electrically conductive coating of claim 4, wherein the reactive diluent comprises one or more of butanediol diglycidyl ether, 1,6 hexanediol diglycidyl ether, and trimethylolpropane triglycidyl ether.
6. The conductive coating as claimed in any one of claims 1 to 5, wherein the auxiliary agent is a thixotropic agent, a dispersing agent and an antifoaming agent, and the mass ratio of the thixotropic agent to the dispersing agent to the antifoaming agent is 1-2: 0.5-1: 0.1 to 0.3.
7. The electrically conductive coating of claim 6, wherein the filler comprises feldspar powder and/or mica.
8. The method for preparing the conductive paint according to any one of claims 1 to 7, comprising the steps of:
1) sequentially adding an active diluent and the single-walled nanotubes into epoxy resin and mixing to obtain a mixture;
2) adding the raw materials except the modified amine into the mixture, and mixing and sanding to obtain a base material;
3) and adding the modified amine into the base material to obtain the conductive coating.
9. The method for preparing the conductive coating according to claim 8, wherein in the step 1), the mixing speed is 1200-1500 r/min, and the mixing time is 20-40 min.
10. The preparation method of the conductive coating according to claim 9, wherein in the step 2), the mixing speed is 900-1200 r/min, and the mixing time is 0.5-1.5 h; the fineness of the base material after sanding is less than or equal to 40 mu m.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111565318.0A CN114032008A (en) | 2021-12-20 | 2021-12-20 | Solvent-resistant conductive coating of single-walled nanotube and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111565318.0A CN114032008A (en) | 2021-12-20 | 2021-12-20 | Solvent-resistant conductive coating of single-walled nanotube and preparation method thereof |
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| CN114032008A true CN114032008A (en) | 2022-02-11 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111363448A (en) * | 2020-04-17 | 2020-07-03 | 绵阳惠利环氧工程有限公司 | Solvent-free antistatic matte epoxy floor compound |
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- 2021-12-20 CN CN202111565318.0A patent/CN114032008A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111363448A (en) * | 2020-04-17 | 2020-07-03 | 绵阳惠利环氧工程有限公司 | Solvent-free antistatic matte epoxy floor compound |
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Application publication date: 20220211 |