CN109385194A - Aqueous elastic conductive coating - Google Patents
Aqueous elastic conductive coating Download PDFInfo
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- CN109385194A CN109385194A CN201811076145.4A CN201811076145A CN109385194A CN 109385194 A CN109385194 A CN 109385194A CN 201811076145 A CN201811076145 A CN 201811076145A CN 109385194 A CN109385194 A CN 109385194A
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The invention proposes a kind of aqueous elastic conductive coatings, according to the number of parts by weight, including following components: 66~78 parts of fluorine silicon modified aqueous polyurethane resin, 10~30 parts of aqueous alkide resin, 1~3 part of modified graphene, 5~10 parts of carbon nanotube, 2~5 parts of coalescing agent, 0.6~2.4 part of dispersing agent, 0.1~1 part of defoaming agent and 80~160 parts of deionized water；The modified graphene is mainly prepared by graphene, maleic acid, chitosan, conductive black, stannic chloride and phosphorus oxychloride.The aqueous elastic conductive coating not only has good salt spray corrosion resistance, also improves the adhesion property of coating.
Description
Technical field
The invention belongs to technical field of coatings, and in particular to a kind of aqueous elastic conductive coating.
Background technique
With the development of energy conservation and environmental protection and information industry, conductive coating is in high power LED substrate, flat-panel monitor, the sun
The demand in the fields such as energy solar panel is increasingly vigorous.It is led with adding silver powder, copper powder, the silver-colored conductive coating of nickel powder, copper conductive coating, nickel
Although electrocoating paint is that the conventional conductive coating electric conductivity of representative is preferable, due to being wherein added to the precious metal materials such as silver, this
Undoubtedly improve the manufacturing cost of coating.
It is higher in view of the high molecular materials such as plastics, surface, volume resistivity, in use, itself existing one lack
It falls into and is very easy to generate electrostatic, this defect is undoubtedly fatal for electronic material use, therefore extremely quick to electrostatic
Electronic component, module, the precision instrument of sense etc. using and being restricted on packing.With the swift and violent hair of electronics industry
Exhibition, Electromagnetic Interference forms public hazards, causes to occur maloperation in the electronic equipment use process of unshielded protection, by dry
It disturbs, the problems such as confidential information is divulged a secret.It is well known that using high molecular material as the Electromagnetic Interference day of the various electronic products of shell
Become serious, every field also proposed new requirement to the electric conductivity of high molecular material.
Although having there is conductive polymer material in the market, aqueous and oiliness antistatic (conduction) coating occurs, conductive
High molecular material type is few, and manufacturing cost is high, preparation process is complicated and difficult to control, and such high molecular polymer is general
Organic solvent in dissolve it is difficult, it is difficult to constructed with commonsense method；And waterborne conductive coating its using expensive dilute
Some metals or metal oxide cause product price high as conductive material；Organic solvent class antistatic (is led
Electricity) coating is although also good in performance and price, and with being increasingly stringenter to environmental requirement, organic solvent is to environment dirt
It contaminates and also larger to the murder by poisoning of the person；Therefore these products are above restricted in application.
Graphene has very unique performance: the specific surface area of super large, theoretical value 2630m2/ g, mechanical property are excellent
Different, thermal conductivity is 5300W/ (m ﹒ K), and carrier mobility reaches 200000cm2V-1s-1, more than 10 times of commercial silicon wafer mobility with
On, there is the conductivity (10 also higher than silver6s/cm)；It is almost transparent, there was only 2.3% absorption to light.Graphene conduct
Conductive material performance can be improved in conductive component, widens the application field of conductive material.But since the graphene of single lamella has
There is very big surface area, during preparing aqueous elastic conductive coating, graphene is easily reunited, and influences its conduction
Property and translucency, using being greatly limited；And graphene as conductive filler its in corrosion-resistant, ageing-resistant performance side
Face is not fine.
Summary of the invention
The present invention proposes a kind of aqueous elastic conductive coating, which not only has good salt spray resistance
Corrosive nature also improves the adhesion property of coating.
The technical scheme of the present invention is realized as follows:
A kind of aqueous elastic conductive coating, according to the number of parts by weight, including following components:
66~78 parts of fluorine silicon modified aqueous polyurethane resin, 10~30 parts of aqueous alkide resin, 1~3 part of modified graphene,
5~10 parts of carbon nanotube, 2~5 parts of coalescing agent, 0.6~2.4 part of dispersing agent, 0.1~1 part of defoaming agent and deionized water 80~
160 parts；The modified graphene is mainly prepared by graphene, maleic acid, chitosan, conductive black, stannic chloride and phosphorus oxychloride
It obtains.
Preferably, the modified graphene preparation method the following steps are included:
The preparation method of the modified graphene the following steps are included:
1) 30~40 parts of graphene, 8~16 parts of maleic acid, 2~4 parts of chitosan, conduction according to the number of parts by weight, are weighed
4~8 parts of carbon black, 1~3 part of stannic chloride and 3~6 parts of phosphorus oxychloride；
2) maleic acid is dissolved in water and aqueous maleic acid is prepared, then graphene is added thereto, adds chlorination
Tin is stirred dispersion and obtains dispersion liquid；
3) after addition chitosan and conductive black are dispersed with stirring into the dispersion liquid of step 2), 40~60 DEG C is warming up to and is added again
Enter phosphorus oxychloride and keep the temperature 30~60min, then filters and screening is dried.
Preferably, the dispersing agent is octadecyldimethyl hydroxyethyl ammonium nitrate, octadecyldimethyl ethoxy mistake
One or more of double octadecyldimethyl ammoniums of ammonium chlorate, dodecyl dimethyl benzyl ammonium chloride and bromination.
Preferably, the defoaming agent is polyethers defoaming agent or polysiloxane defoaming agent.
Preferably, the coalescing agent is TEXANOL coalescing agent, 12 ester alcohol coalescing agents or Dowanolpph film forming
Auxiliary agent.
The preparation method of aqueous elastic conductive coating of the invention, comprising the following steps:
1) 66~78 parts of fluorine silicon modified aqueous polyurethane resin is weighed according to the proportion, 10~30 parts of aqueous alkide resin, is changed
Property 1~3 part of graphene, 5~10 parts of carbon nanotube, 2~5 parts of coalescing agent, 0.6~2.4 part of dispersing agent, 0.1~1 part of defoaming agent
And 80~160 parts of deionized water spare；
2) first part fluorine silicon modified aqueous polyurethane resin, carbon nanotube are uniformly mixed with whole modified graphenes, then
Ball milling, which is carried out, with ball mill obtains dispersion liquid；
3) remaining fluorine silicon modified aqueous polyurethane resin, aqueous alkide resin, dispersing agent are mixed with portions of de-ionized water,
Ball milling, which is carried out, with ball mill again obtains level-one coating；
4) dispersion liquid of step 2), the level-one coating of step 3) and remaining components are mixed, sonic oscillation 20
~40min.
Beneficial effects of the present invention:
Aqueous elastic conductive coating of the invention is selected mainly by graphene, maleic acid, chitosan, conductive black, chlorination
Modified graphene is prepared in tin and phosphorus oxychloride, not only remains the electric conductivity of graphene, also changes to the surface of graphene
Property, improve its salt spray resistance；Modified graphene its with carbon nanotube coordinative role, and be only for modified graphite
Compared with carbon nanotube, adhesive force is improved by 2 grades to 0 grade alkene.
The conductive coating that aqueous elastic conductive coating of the invention is formed, with GT-Y-60 type salt spray test machine at 35 DEG C,
It is tested after 10 hours by spraying with concentration up to the sodium chloride solution of 50 grams per liters, 70 mls/hour of spray amount, sheet resistance only increases
It is big by 5.1~8.2%.
Specific embodiment
Embodiment 1
The preparation method of modified graphene the following steps are included:
1) 30 parts of graphene, 8 parts of maleic acid, 4 parts of chitosan, 8 parts of conductive black, chlorine according to the number of parts by weight, are weighed
Change 1 part of tin and 3 parts of phosphorus oxychloride；
2) maleic acid is dissolved in water and aqueous maleic acid is prepared, then graphene is added thereto, adds chlorination
Tin is stirred dispersion and obtains dispersion liquid；
3) after addition chitosan and conductive black are dispersed with stirring into the dispersion liquid of step 2), 40 DEG C is warming up to and adds three
Chlorethoxyfos keep the temperature 60min, then filter and screening is dried.
Embodiment 2
The preparation method of modified graphene the following steps are included:
1) 40 parts of graphene, 16 parts of maleic acid, 2 parts of chitosan, 4 parts of conductive black, chlorine according to the number of parts by weight, are weighed
Change 3 parts of tin and 6 parts of phosphorus oxychloride；
2) maleic acid is dissolved in water and aqueous maleic acid is prepared, then graphene is added thereto, adds chlorination
Tin is stirred dispersion and obtains dispersion liquid；
3) after addition chitosan and conductive black are dispersed with stirring into the dispersion liquid of step 2), 60 DEG C is warming up to and adds three
Chlorethoxyfos keep the temperature 30min, then filter and screening is dried.
Embodiment 3
A kind of aqueous elastic conductive coating, according to the number of parts by weight, including following components:
71 parts of fluorine silicon modified aqueous polyurethane resin, 20 parts of aqueous alkide resin, embodiment 12 parts of modified graphene, carbon
8 parts of nanotube, 4 parts of TEXANOL coalescing agent, 1.6 parts of octadecyldimethyl hydroxyethyl ammonium nitrate, polyethers defoaming agent 0.6
Part and 120 parts of deionized water.
The preparation method of aqueous elastic conductive coating:
1) first the modified graphene of part fluorine silicon modified aqueous polyurethane resin, carbon nanotube and whole embodiments 1 is mixed
It closes uniformly, then carries out ball milling with ball mill and obtain dispersion liquid；
2) by remaining fluorine silicon modified aqueous polyurethane resin, aqueous alkide resin, octadecyldimethyl ethoxy nitric acid
Ammonium is mixed with portions of de-ionized water, then is carried out ball milling with ball mill and obtained level-one coating；
3) dispersion liquid of step 1), the level-one coating of step 2) and remaining components are mixed, sonic oscillation
30min.
The conductive coating that the aqueous elastic conductive coating of the present embodiment is formed, measures conductivity 1.44 × 102S/cm；With
GT-Y-60 type salt spray test machine sprays at 35 DEG C, with concentration up to the sodium chloride solution of 50 grams per liters, 70 mls/hour of spray amount
Mist is tested after 10 hours, and sheet resistance only increases 7.2%.It is measured according to GB/T9286, adhesive force grade is 0 grade.
Embodiment 4
A kind of aqueous elastic conductive coating, according to the number of parts by weight, including following components:
66 parts of fluorine silicon modified aqueous polyurethane resin, 30 parts of aqueous alkide resin, embodiment 21 part of modified graphene, carbon
5 parts of nanotube, 2 parts of 12 ester alcohol coalescing agent, 0.6 part of dodecyl dimethyl benzyl ammonium chloride, 0.1 part of polyethers defoaming agent
And 100 parts of deionized water.
The conductive coating that the aqueous elastic conductive coating of the present embodiment is formed, measures conductivity 1.15 × 102S/cm；With
GT-Y-60 type salt spray test machine sprays at 35 DEG C, with concentration up to the sodium chloride solution of 50 grams per liters, 70 mls/hour of spray amount
Mist is tested after 10 hours, and sheet resistance only increases 8.2%.It is measured according to GB/T9286, adhesive force grade is 0 grade.
Embodiment 5
A kind of aqueous elastic conductive coating, according to the number of parts by weight, including following components:
69 parts of fluorine silicon modified aqueous polyurethane resin, 10 parts of aqueous alkide resin, embodiment 12 parts of modified graphene, carbon
Double 2 parts of the octadecyldimethyl ammonium of 7 parts of nanotube, 3 parts of 12 ester alcohol coalescing agent, bromination, 0.4 part of polysiloxane defoaming agent and
110 parts of deionized water.
The conductive coating that the aqueous elastic conductive coating of the present embodiment is formed, measures conductivity 1.49 × 102S/cm；With
GT-Y-60 type salt spray test machine sprays at 35 DEG C, with concentration up to the sodium chloride solution of 50 grams per liters, 70 mls/hour of spray amount
Mist is tested after 10 hours, and sheet resistance only increases 6.4%.It is measured according to GB/T9286, adhesive force grade is 0 grade.
Embodiment 6
A kind of aqueous elastic conductive coating, according to the number of parts by weight, including following components:
78 parts of fluorine silicon modified aqueous polyurethane resin, 20 parts of aqueous alkide resin, embodiment 23 parts of modified graphene, carbon
Double 2.4 parts of the octadecyldimethyl ammoniums of 10 parts of nanotube, 5 parts of Dowanol pph coalescing agent, bromination, polysiloxane defoaming agent 1
Part and 160 parts of ethyl alcohol.
The conductive coating that the aqueous elastic conductive coating of the present embodiment is formed, measures conductivity 1.52 × 102S/cm；With
GT-Y-60 type salt spray test machine sprays at 35 DEG C, with concentration up to the sodium chloride solution of 50 grams per liters, 70 mls/hour of spray amount
Mist is tested after 10 hours, and sheet resistance only increases 5.1%.It is measured according to GB/T9286, adhesive force grade is 0 grade.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (5)
1. a kind of aqueous elastic conductive coating, which is characterized in that according to the number of parts by weight, including following components:
66~78 parts of fluorine silicon modified aqueous polyurethane resin, 10~30 parts of aqueous alkide resin, 1~3 part of modified graphene, carbon are received
5~10 parts of mitron, 2~5 parts of coalescing agent, 0.6~2.4 part of dispersing agent, 0.1~1 part of defoaming agent and deionized water 80~160
Part；The modified graphene is mainly prepared by graphene, maleic acid, chitosan, conductive black, stannic chloride and phosphorus oxychloride
It arrives.
2. aqueous elastic conductive coating according to claim 1, which is characterized in that the preparation method of the modified graphene
The following steps are included:
1) 30~40 parts of graphene, 8~16 parts of maleic acid, 2~4 parts of chitosan, conductive black according to the number of parts by weight, are weighed
4~8 parts, 1~3 part of stannic chloride and 3~6 parts of phosphorus oxychloride；
2) maleic acid is dissolved in water and aqueous maleic acid is prepared, be then added thereto graphene, add stannic chloride into
Row is dispersed with stirring to obtain dispersion liquid；
3) after addition chitosan and conductive black are dispersed with stirring into the dispersion liquid of step 2), 40~60 DEG C is warming up to and adds three
Chlorethoxyfos keep the temperature 30~60min, then filter and screening is dried.
3. aqueous elastic conductive coating according to claim 1, which is characterized in that the dispersing agent is hexadecyldimethylamine
Base hydroxyethyl ammonium nitrate, octadecyldimethyl ethoxy ammonium perchlorate, dodecyl dimethyl benzyl ammonium chloride and bromination are double
One or more of octadecyldimethyl ammonium.
4. aqueous elastic conductive coating according to claim 1, which is characterized in that the defoaming agent is polyethers defoaming agent
Or polysiloxane defoaming agent.
5. aqueous elastic conductive coating according to claim 1, which is characterized in that the coalescing agent be TEXANOL at
Film auxiliary agent, 12 ester alcohol coalescing agents or Dowanolpph coalescing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811076145.4A CN109385194A (en) | 2018-09-14 | 2018-09-14 | Aqueous elastic conductive coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811076145.4A CN109385194A (en) | 2018-09-14 | 2018-09-14 | Aqueous elastic conductive coating |
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| Publication Number | Publication Date |
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| CN109385194A true CN109385194A (en) | 2019-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811076145.4A Pending CN109385194A (en) | 2018-09-14 | 2018-09-14 | Aqueous elastic conductive coating |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103073953A (en) * | 2013-02-07 | 2013-05-01 | 苏州牛剑新材料有限公司 | Waterborne conductive ink and preparation method thereof |
| CN104163928A (en) * | 2014-08-25 | 2014-11-26 | 鸿纳（东莞）新材料科技有限公司 | Conductive heat-conductive graphene slurry and coating |
| CN104310388A (en) * | 2014-10-15 | 2015-01-28 | 宁波墨西科技有限公司 | Graphene composite powder material and preparation method thereof |
| WO2016086796A1 (en) * | 2014-12-02 | 2016-06-09 | 宁波中科建华新材料有限公司 | Graphene dispersant and application thereof |
-
2018
- 2018-09-14 CN CN201811076145.4A patent/CN109385194A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103073953A (en) * | 2013-02-07 | 2013-05-01 | 苏州牛剑新材料有限公司 | Waterborne conductive ink and preparation method thereof |
| CN104163928A (en) * | 2014-08-25 | 2014-11-26 | 鸿纳（东莞）新材料科技有限公司 | Conductive heat-conductive graphene slurry and coating |
| CN104310388A (en) * | 2014-10-15 | 2015-01-28 | 宁波墨西科技有限公司 | Graphene composite powder material and preparation method thereof |
| WO2016086796A1 (en) * | 2014-12-02 | 2016-06-09 | 宁波中科建华新材料有限公司 | Graphene dispersant and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 强涛涛: "《合成革化学品》", 31 July 2016, 中国轻工业出版社 * |
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Application publication date: 20190226 |
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