CN101210124A - Electrically-conducting paint and preparation method thereof - Google Patents
Electrically-conducting paint and preparation method thereof Download PDFInfo
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- CN101210124A CN101210124A CNA2006101577844A CN200610157784A CN101210124A CN 101210124 A CN101210124 A CN 101210124A CN A2006101577844 A CNA2006101577844 A CN A2006101577844A CN 200610157784 A CN200610157784 A CN 200610157784A CN 101210124 A CN101210124 A CN 101210124A
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- electrically conducting
- conducting coating
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Abstract
The invention relates to a conducting paint and a preparation method thereof. According to the proportion by weight of the paint, the paint comprises the following components that: 30 to 55 percent of film forming matter, 1 to 10 percent of addition agent of the conducting paint and 40 to 69 percent of mixing thinner, wherein, the film forming matter comprises metal power with the proportion by weight of 15 to 30 percent of the proportion by weight of the conducting paint; the addition agent of the conducting paint comprises resin acceptor with the proportion by weight of 1 to 5 percent of the proportion by weight of the paint; the invention also provides a preparation method for the paint; according to the mixture ratio, firstly, metal power of silver and copper is moistened, then is added into resin and is sufficiently stirred by a dispersion machine, and then the addition agent of the conducting paint and the mixing thinner are added and stirred, after the mixture is sieved to eliminate the impurity to get the finished conducting paint; the invention adjusts the conductivity of the paint film by adding less metal power so as to ensure that the conducting paint has the best effect; meanwhile, the conducting paint is acid and alkali resistant and temperature change resistant; furthermore, the performance of the antigravity impact is excellent, the color is bright, the plainness of a paint film is good, the weather resistance is good and the manufacturing technique is simple.
Description
Technical field
The present invention relates to a kind of coating, a kind of electrically conducting coating and preparation method thereof especially is provided.
Background technology
Along with developing rapidly of electronic technology, electronic circuit, electronic component has reached Highgrade integration, functionalization, the degree of digitizing and high frequencyization, Just because of this, caused the serious day by day of electromagnetic interference, need effectively reduce the harm that electromagnetic interference is brought by using the material that to eliminate or to weaken electromagnetic interference near interfering source or the responsive source.
Mobile phone can be described as in the world today to be used generally, a kind of electronic product of quantity maximum, and the volume requirement of mobile phone is more and more littler, and body weight is more and more lighter, in the so little again space, add various information technologies, comprise numeral, RF, simulation, high-power or the like, make the work reliably and not interfering with each other in little space of various technology, just must take a kind of method that can shield electromagnetic interference.In mobile phone industry, mainly be to utilize the electrically conducting coating electromagnetic shielding and obtain a large amount of uses, by spraying conduction paint film at the bottom of mobile phone shell, and play inner each part of shielding and outside to inner and inner electromagnetic interference to human body; Because electrically conducting coating has special function, for example, eliminate static, electromagnetic shielding, electrically heated and protection against corrosion etc., it has all obtained using widely in a lot of fields, obtained effective application as every field such as hyundai electronics industry, construction industry, transportation and military affairs, for example in Military Application, the purpose of shielding is, the one, the electromagnetic field in control internal radiation zone does not make it run off a certain zone; The 2nd, prevent that external radiation from entering a certain zone; When external hertzian wave runs into shielding material, will be absorbed, reflection or radiation, the continuation transmission of electromagnetic wave energy is weakened.Given this, the Chinese patent publication number is that CN1632001 discloses a kind of conductive shield paint/lacquer, its composition comprises metal powder 25-45wt%, binding agent 5-25wt%, solvent 20-25wt% etc., this coating can reach shield effectiveness, but the content of use therein metal-powder is more, can make the resistivity decreased of coating, and cost is also higher, and manufacture craft is also complicated.
Summary of the invention
The object of the present invention is to provide a kind of electrically conducting coating, the metal-powder content that this coating uses is few and conductivity is good.
Another object of the present invention provides the preparation method of the simple electrically conducting coating of a kind of technology.
For achieving the above object, technical scheme of the present invention is: a kind of electrically conducting coating is provided, and by weight, it comprises following component: filmogen 30-55%, electrically conducting coating auxiliary agent 1-10%, mixed diluent 40-69%; Wherein: described filmogen comprises metal-powder, and its content is the 15-30% of electric conduction paint weight ratio, comprises coupling agent in the electrically conducting coating auxiliary agent, and described coupling agent is the 1-5% of coating weight ratio.
Described filmogen comprises that also counting the metal that accounts for filmogen 1-10% by weight aligns promotor.
Described coupling agent is titanate coupling agent or silane coupling agent.
Described filmogen also comprises the single component resin, and this resin is a novolac epoxy, acrylic resin, a kind of in the Synolac.
Described metal-powder be silver powder, copper powder or its both mix composition.
The particle diameter of described metal-powder is 1-10 μ m.
Described mixed diluent is a propyl carbinol, ethanol, butylacetate, ethyl acetate, the mixture of two or more in the hexone.
The present invention also provides a kind of preparation method of electrically conducting coating, may further comprise the steps,
(1) at first will account for the metal-powder of electric conduction paint weight 15-30% and join in the resin after wetting, fully stir with dispersion machine;
(2) will account for that coating is led the coupling agent of lacquer weight ratio 1-5% and other an amount of auxiliary agents mix, make conductive auxiliary agent;
(3) weight ratio that step (2) is made is the conductive auxiliary agent of 1-10% and the mixed diluent mixing and stirring that weight ratio is 40-69%;
(4) cross 100-300 purpose sieve, remove impurity, obtain the finished product electrically conducting coating.
In described (1) step, dispersion machine is to stir 30-50 minute with the speed that per minute 900-1100 changes.
In described (3) step, dispersion machine is to stir 10-15 minute with the speed that per minute 900-1100 changes.
Compared with prior art, the technique effect that the present invention brought is: by the composition and the proportioning of electrically conducting coating, the conductivity that makes is good; Simultaneously, the prepared electrically conducting coating of the present invention is according to the difference of metal-powder addition, conductivity also changes thereupon, the increase of metal-powder addition, the resistivity of paint film constantly descends, when the conductive filler material addition was controlled between the 15-30wt% of electric conduction paint gross weight, the resistivity magnitude range of corresponding paint film was 10
-2-10
1Ω cm can need pass through in practice, and the addition of adjusting metal-powder is controlled the resistivity of conducting coat, and the present invention regulates the conductivity of filming by adding less metal-powder, makes it reach best effect; Described electrically conducting coating also has the following advantages:
1, electrically conducting coating conductivity excellence not only, and its acid and alkali-resistance, the ballistic excellent performance of temp. variation resistant antigravity;
2, the electrically conducting coating storage time long, paint film is weather-proof good, conductive effect is lasting;
3, the used starting material wide material sources of electrically conducting coating are in liberal supply;
4, the electrically conducting coating construction technology is simple, need not special processing and particular surroundings;
5, electrically conducting coating bright in color, the paint film planeness is good, and weathering resistance is good.
Further specify beneficial effect of the present invention below in conjunction with specific embodiment.
Embodiment
The invention provides a kind of electrically conducting coating, by weight, it comprises following component: filmogen 30-55%, electrically conducting coating agent 1-10%, mixed diluent 40-69%; Wherein: described filmogen comprises metal-powder, and its content is the 15-30% of conduction paint vehicle weight ratio.Coating of the present invention can reach the favorable conductive effect by adding a spot of metal-powder in conjunction with above-mentioned prescription composition.
The prepared electrically conducting coating of the present invention is according to the difference of metal-powder addition, conductivity also changes thereupon, the increase of metal-powder addition, and the resistivity of paint film constantly descends, when the conductive filler material addition was controlled between the 15-30wt%, the resistivity magnitude range of corresponding paint film was 10
-2-10
-1Ω cm. can need pass through in practice, and the addition of adjusting metal-powder is controlled the resistivity of conducting coat.Metal-powder of the present invention is that silver powder, copper powder or the two mix, and particle diameter is 1-10 μ m, and resistivity is 1.62 * 10
-6-1.69 * 10
-6/ Ω .cm, its color and luster according to the difference that comprises silver-bearing copper powder amount by light yellow to sorrel, the particle diameter of described metal-powder and the resistivity of itself are also influential for conductivity, particle diameter is more little, coating surface is smooth more smooth, shock-resistant ability is also good more, in the base-material storage process, can reduce the rate of descent of powder simultaneously.
Added metal among the present invention and aligned promotor, the coating conductive auxiliary agent; It is commercial BYK-110 that described metal aligns promotor, BYK-166 or resin with this type of effect, described coating conductive auxiliary agent comprises coupling agent and an amount of auxiliary agent, described coupling agent is titanate coupling agent or silane coupling agent, and titanate coupling agent is meant tetra-sodium type monoalkoxy class titanic acid ester, compound monoalkoxy class titanic acid ester, auxiliary agent main component in the described electrically conducting coating auxiliary agent is a wetting dispersing agent, as: commercial BYK-110, BYK-220s, 963,107 etc., flow agent, as: commercial F-41, the high B-1484 of enlightening etc., anti-settling agent, as organic boron-moisten soil, meteorological silicon-dioxide etc., and in the adhesion promoter two or more; The present invention is owing to added metal-powder, be difficult to be scattered in the base-material preferably, the bad conductivity that will have influence on paint film of the pardon of metal-powder and resin, and because metal-powder belongs to inorganic powder, so itself and the sticking power of the formed paint film of resin on material are not fine, and owing to the coating degree difference of resin to metal-powder, so metal is arranged bad at the paint film interior orientation, influence paint film adhesion, hardness and conductivity.By adding coupling agent and adhesion promoter, can improve aligning of metal-powder, and it is better contained mutually with resin, make the stable conductive network of its formation.Studies show that, when the addition of coupling agent is the 1-5% of electric conduction paint total amount, coating has good electrical conductivity, the coupling agent consumption was less than 1% o'clock, and metal-powder is bad with contacting of material, poor electric conductivity, when the coupling agent consumption greater than 5% the time, destroy the arrangement of metal-powder in paint film, hinder the formation of conductive channel and increase the particle gap, resistivity is increased.
The use that metal aligns promotor is approximately the 1-10wt% of filmogen, and in this scope, the metal-powder marshalling is level and smooth, and filmogen has good gloss, and paint film is good to the sticking power of material.
The electrically conducting coating of the present invention's preparation is under the ball falling impact effect, and paint film does not have obscission and illustrates that its sticking power is good; Circulation is 48 hours in the neutral salt spray test, and sticking power is constant, and resistivity is almost constant, illustrates that electrically conducting coating has good salt spray resistance; Under the effect of high low temperature circulation impact, resistivity and sticking power are almost constant, illustrate that electrically conducting coating has good electrical stability.
Wetting dispersing agent BYK-110 described in the embodiment of the invention and anti-settling agent 201p are commercial product.Mixed diluent can adopt propyl carbinol, ethanol, and butylacetate, ethyl acetate, the mixture of two or more in the hexone (MIBK) is mixed with mixed diluent by suitable proportion and can uses in the preparation of coating.
Embodiment 1
Present embodiment employing table 1 is prepared:
Table 1
At first the wetting back of silver metal powder is dissolved with acrylic resin by said ratio, stirred 30-50 minute with the rotating speed of dispersion machine with per minute 900-1100, in that being joined, electrically conducting coating auxiliary agent titanate coupling agent, wetting dispersing agent BYK-110, anti-settling agent 201p and mixed diluent wherein stir 10-15 minute, removal impurity sieves, obtain the finished product electrically conducting coating, this moment, the addition of metal-powder was 25% of an electric conduction paint gross weight, and the resistivity of paint film is 0.41 Ω cm.
Embodiment 2
Present embodiment is prepared by table 2:
Table 2
According to said ratio, it is identical with embodiment 1 specifically to implement the preparation method, after the dispersed with stirring, is prepared into the electrically conducting coating finished product, this moment metal-powder addition be the electric conduction paint total amount 28% this moment paint film resistivity be 0.24 Ω cm.
Embodiment 3
Present embodiment is prepared by table 3:
Table 3
According to said ratio, it is identical with embodiment 1 specifically to implement the preparation method, after the dispersed with stirring, is prepared into the electrically conducting coating finished product, and this moment, the addition of metal-powder was 28.6% of a filmogen, and this moment, the resistivity of paint film was 0.78 Ω cm.
Embodiment 4
Present embodiment is prepared by table 4:
Table 4
According to said ratio, it is identical with embodiment 1 specifically to implement the preparation method, after the dispersed with stirring, is prepared into the electrically conducting coating finished product, and this moment, the addition of metal-powder was 25% of an electric conduction paint total amount, and this moment, the resistivity of paint film was 0.59 Ω cm.
Embodiment 5
The invention provides a kind of preparation method of electrically conducting coating, may further comprise the steps:
(1) according to the proportioning of embodiment 1-2, at first metal-powder is joined in the resin after wetting, stirred 30 minutes with the speed that per minute 900 changes with dispersion machine;
(2) with coupling agent, mix, make conductive auxiliary agent;
(3) conductive auxiliary agent in the step (2) and mixed diluent are mixed, and stirred 10 minutes with the speed that per minute 900 changes with dispersion machine;
(4) cross 100 purpose sieves, remove impurity, obtain the finished product electrically conducting coating.
This method technology is simple, and the coating conductivity that makes is good.
Embodiment 6
The invention provides a kind of preparation method of electrically conducting coating, may further comprise the steps:
(1) according to the proportioning of embodiment 3-4, at first metal-powder is joined in the resin after wetting, stirred 50 minutes with the speed that per minute 1100 changes with dispersion machine;
(2) with coupling agent, auxiliary agent mixes, and makes conductive auxiliary agent;
(3) conductive auxiliary agent in the step (2) and mixed diluent are mixed, and stirred 15 minutes with the speed that per minute 1100 changes with dispersion machine;
(4) cross 300 purpose sieves, remove impurity, obtain the finished product electrically conducting coating.
Claims (10)
1. electrically conducting coating, by weight, it comprises following component:
Filmogen 30-55%, electrically conducting coating auxiliary agent 1-10%, mixed diluent 40-69%;
Wherein: described filmogen comprises metal-powder, and its content is the 15-30% of electric conduction paint weight ratio, comprises coupling agent in the electrically conducting coating auxiliary agent, and described coupling agent is the 1-5% of coating weight ratio.
2. electrically conducting coating according to claim 1 is characterized in that: described filmogen comprises that also the metal of counting filmogen 1-10% by weight aligns promotor.
3. electrically conducting coating according to claim 1 and 2 is characterized in that: described coupling agent is titanate coupling agent or silane coupling agent.
4. electrically conducting coating according to claim 3 is characterized in that: described filmogen also comprises the single component resin, and this resin is a novolac epoxy, acrylic resin, a kind of in the Synolac.
5. electrically conducting coating according to claim 3 is characterized in that: described metal-powder be silver powder, copper powder or its both mix composition.
6. electrically conducting coating according to claim 5 is characterized in that: the particle diameter of described metal-powder is 1-10 μ m.
7. electrically conducting coating according to claim 3 is characterized in that: described mixed diluent is a propyl carbinol, ethanol, butylacetate, ethyl acetate, the mixture of two or more in the hexone.
8. the preparation method of an electrically conducting coating is characterized in that: may further comprise the steps,
(1) metal-powder that at first will account for electrically conducting coating weight ratio 15-30% joins in the resin after wetting through infiltration, fully stirs with dispersion machine;
(2) will account for electrically conducting coating 1-5% coupling agent and an amount of auxiliary agent and solvent, make conductive auxiliary agent
(3) weight ratio that step (2) is made is that 1-5% electrically conducting coating auxiliary agent and weight ratio are the mixed diluent mixing and stirring of 40-70%;
(4) cross 100-300 purpose sieve, remove impurity, obtain the finished product electrically conducting coating.
9. the preparation method of electrically conducting coating according to claim 8 is characterized in that: in described (1) step, dispersion machine is to stir 30-50 minute with the speed that per minute 900-1100 changes.
10. the preparation method of electrically conducting coating according to claim 8 is characterized in that: in described (3) step, dispersion machine is to stir 10-15 minute with the speed that per minute 900-1100 changes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101577844A CN101210124A (en) | 2006-12-26 | 2006-12-26 | Electrically-conducting paint and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101577844A CN101210124A (en) | 2006-12-26 | 2006-12-26 | Electrically-conducting paint and preparation method thereof |
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|---|---|
| CN101210124A true CN101210124A (en) | 2008-07-02 |
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|---|---|---|---|
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102516849A (en) * | 2011-12-12 | 2012-06-27 | 费近峰 | Acrylic resin electric conductive paint |
| CN102702918A (en) * | 2012-06-12 | 2012-10-03 | 天长市巨龙车船涂料有限公司 | Conductive coating composition and preparation method thereof |
| CN103666220A (en) * | 2013-12-03 | 2014-03-26 | 江苏帕齐尼铜业有限公司 | Anti-aging copper powder coating and preparation method thereof |
| CN103871678A (en) * | 2014-03-13 | 2014-06-18 | 苏州科茂电子材料科技有限公司 | Ultrafine coaxial cable with superior shielding performance |
| CN103865353A (en) * | 2014-03-13 | 2014-06-18 | 苏州科茂电子材料科技有限公司 | Conductive coating for ultrafine coaxial cables |
| CN103881507A (en) * | 2014-03-13 | 2014-06-25 | 苏州科茂电子材料科技有限公司 | Preparation method of conductive coating layer for super-thin coaxial cable |
| CN104065774A (en) * | 2014-07-08 | 2014-09-24 | 马鞍山绿盾防护材料科技有限公司 | Radiation resistant mobile phone shell with signal enhancement function and manufacturing method of radiation resistant mobile phone shell with signal enhancement function |
| CN107141954A (en) * | 2017-05-12 | 2017-09-08 | 罗碧贤 | A kind of anti-interference paint of cable conduction and preparation method thereof |
| CN107556867A (en) * | 2017-09-06 | 2018-01-09 | 陈毅忠 | A kind of preparation method of electrically-conducting paint |
| CN107722826A (en) * | 2017-09-15 | 2018-02-23 | 原晋波 | A kind of preparation method of electrically-conducting paint |
| CN108410341A (en) * | 2018-04-13 | 2018-08-17 | 合肥酷睿网络科技有限公司 | A kind of computer conductive coating and preparation method thereof |
| CN113881324A (en) * | 2021-10-27 | 2022-01-04 | 北京新风航天装备有限公司 | High-temperature-resistant weather-resistant anti-corrosion electromagnetic shielding coating |
-
2006
- 2006-12-26 CN CNA2006101577844A patent/CN101210124A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102516849A (en) * | 2011-12-12 | 2012-06-27 | 费近峰 | Acrylic resin electric conductive paint |
| CN102702918A (en) * | 2012-06-12 | 2012-10-03 | 天长市巨龙车船涂料有限公司 | Conductive coating composition and preparation method thereof |
| CN103666220A (en) * | 2013-12-03 | 2014-03-26 | 江苏帕齐尼铜业有限公司 | Anti-aging copper powder coating and preparation method thereof |
| CN103871678A (en) * | 2014-03-13 | 2014-06-18 | 苏州科茂电子材料科技有限公司 | Ultrafine coaxial cable with superior shielding performance |
| CN103865353A (en) * | 2014-03-13 | 2014-06-18 | 苏州科茂电子材料科技有限公司 | Conductive coating for ultrafine coaxial cables |
| CN103881507A (en) * | 2014-03-13 | 2014-06-25 | 苏州科茂电子材料科技有限公司 | Preparation method of conductive coating layer for super-thin coaxial cable |
| CN104065774A (en) * | 2014-07-08 | 2014-09-24 | 马鞍山绿盾防护材料科技有限公司 | Radiation resistant mobile phone shell with signal enhancement function and manufacturing method of radiation resistant mobile phone shell with signal enhancement function |
| CN107141954A (en) * | 2017-05-12 | 2017-09-08 | 罗碧贤 | A kind of anti-interference paint of cable conduction and preparation method thereof |
| CN107556867A (en) * | 2017-09-06 | 2018-01-09 | 陈毅忠 | A kind of preparation method of electrically-conducting paint |
| CN107722826A (en) * | 2017-09-15 | 2018-02-23 | 原晋波 | A kind of preparation method of electrically-conducting paint |
| CN108410341A (en) * | 2018-04-13 | 2018-08-17 | 合肥酷睿网络科技有限公司 | A kind of computer conductive coating and preparation method thereof |
| CN113881324A (en) * | 2021-10-27 | 2022-01-04 | 北京新风航天装备有限公司 | High-temperature-resistant weather-resistant anti-corrosion electromagnetic shielding coating |
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Open date: 20080702 |