CN102209440B - Method and device for carrying out high-pressure-resistant water-proof treatment on PCB (printed circuit board) of LED (light-emitting diode) true-color nixie tube - Google Patents
Method and device for carrying out high-pressure-resistant water-proof treatment on PCB (printed circuit board) of LED (light-emitting diode) true-color nixie tube Download PDFInfo
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- CN102209440B CN102209440B CN2011100754293A CN201110075429A CN102209440B CN 102209440 B CN102209440 B CN 102209440B CN 2011100754293 A CN2011100754293 A CN 2011100754293A CN 201110075429 A CN201110075429 A CN 201110075429A CN 102209440 B CN102209440 B CN 102209440B
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Abstract
The invention relates to a method and a device for carrying out high-pressure-resistant water-proof treatment on a PCB (printed circuit board) of an LED (light-emitting diode) true-color nixie tube. The method comprises the following steps: (1) mixing toluene with acetone in a mass ratio of 1: (1-1.5) to prepare a mixed solution; (2) mixing organic silicon resin with the mixed solution in a mass ratio of 1: (0. 8-1.5) to obtain an organic silicon resin mixed solution, then uniformly stirring the obtained organic silicon resin mixed solution; adding silica of which the mass accounts for 14-26% of the mass of the organic silicon resin mixed solution, aluminum oxide of which the mass accounts for 7-13% of the mass of the organic silicon resin mixed solution, chromium trioxide of which the mass accounts for 3.5-6.5% of the mass of the organic silicon resin mixed solution, zinc phosphate of which the mass accounts for 3.5-6.5% of the mass of the organic silicon resin mixed solution, and asbestos powder of which the mass accounts for 7-13% of the mass of the organic silicon resin mixed solution into the organic silicon resin mixed solution and stirring uniformly to obtain moistureproof oil; and (3) soaking a PCB into the obtained moistureproof oil for 1 to 3 seconds, and then drying the PCB in a drying machine. According to the invention, the moistureproof oil is closely adhered to the surface of the PCB subjected to water-proof treatment, the treated PCB subjected to water-proof treatment has stable property after being soaked in water for 24 hours; and the property of the PCB subjected to water-proof treatment is invariable within 20 years at normal temperature and normal pressure.
Description
Technical field
The present invention relates to a kind of method for waterproofing and device of circuit board, the very color charactron PCB of especially a kind of LED circuit board high-voltage resistant waterproof processing method and device.
Background technology
At present, problem of various on the market LED charactrons (outdoor) ubiquity is exactly a waterproof problem, in case there is rainwater (perhaps moisture) to get into charactron, damages components and parts with regard to being easy to cause line short.So solving the charactron waterproof problem is the key issue of improving product quality, improving life of product.
The encapsulating method of existing circuit board is that circuit board is fixed in the seal cavity through bearing.There is disappearance as follows in the sealing means of sort circuit plate:
1, in the seal cavity, circuit board directly with seal cavity in air contact, and contain steam in the air, dust, the time one is of a specified duration, certainly will useful life of circuit board, function etc. be impacted;
If the sealing of 2 seal cavities does not reach requirement,, will directly corrode circuit board in case there is water to get into seal cavity;
3, service life one of a specified duration, damaging appears in seal cavity unavoidably, appearance trickleer become flexible, breaks etc. and generally be difficult to find, handles as untimely, with the function that directly influences circuit board, shortens the useful life of circuit board.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the prior art, the very color charactron PCB of a kind of LED circuit board high-voltage resistant waterproof processing method and device are provided.
According to technical scheme provided by the invention, the very color charactron PCB of said LED circuit board high-voltage resistant waterproof processing method, characteristic is may further comprise the steps:
(1) toluene and acetone are mixed by mass ratio 1:1 ~ 1.5, preparation obtains mixed solution;
(2) organic siliconresin is mixed by mass ratio 1:0.8 ~ 1.5 with mixed solution obtain the organic siliconresin mixed solution, stir; Add silicon dioxide, 7 ~ 13% aluminium oxide, 3.5 ~ 6.5% chromium trioxide, 3.5 ~ 6.5% trbasic zinc phosphate and 7 ~ 13% the flake asbestos of relative organic siliconresin mixed solution quality 14 ~ 26%, stirring obtains anti-humidity oil;
(3) with soaking 1 ~ 3 second in the PCB circuit board immersion anti-humidity oil, put into drying machine drying.
Said mixing speed is 50 ~ 100 rev/mins, and mixing speed is 1 ~ 3 minute.
Described bake out temperature is 40 ~ 80 ℃, and drying time is 1 ~ 3 minute.
The very color charactron PCB of a kind of LED circuit board high-voltage resistant waterproof processing unit comprises frame, below said frame, is provided with capillary groove, and capillary groove one side is installed dryer; In the frame upper end suspension bracket is set, on suspension bracket, utilizes lifting rope to be linked with circuit board; Said circuit board can be along about the suspension bracket, advance up and down.
Hold anti-humidity oil in the said capillary groove.
The surperficial close attachment of the PCB circuit board after method for waterproofing of the present invention is handled has anti-humidity oil, stable in properties after 24 hours; Following 20 years consistency of normal temperature and pressure.The PCB circuit board of handling through anti-humidity oil was inserted in the water 24 hours, take out air-dry after, circuit board and electronic devices and components do not have any corrosion, performance is constant; Anti--60 ~+200 degrees centigrade of high low temperature, anti-20000 volts of high pressure.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Below in conjunction with specific embodiment the present invention is described further.
The present invention adopts toluene and acetone to mix with organic siliconresin with the solution that is made into after mixing; And adding silicon dioxide powder, alumina powder, chrome green, trbasic zinc phosphate and flake asbestos material generate a kind of anti-humidity oil; This anti-humidity oil has the characteristics of hydrophobic protection against the tide, radioresistance, transparency height, nontoxic pollution-free, high-low temperature resistant (60 ~ 200 ℃), anti-aging, weather resisteant; Have excellent electrical insulation properties, its high-frequency electrical performance is good.There is very strong hydrophobicity on surface through this anti-humidity oil sealing, and in the environment of moist and the big temperature difference, the surface can not form the globule yet.The diaphragm that forms has the full transparency, the insulation impedance that the diaphragm tool is very high, and its resistance value is greater than 5 * 10
15Ω, acid and alkali resistance and various water impurity, and fast drying, but normal-temperature operation is very convenient.
PCB circuit board high-voltage resistant waterproof processing unit used in the present invention comprises frame 1, below said frame 1, is provided with capillary groove 3, and capillary groove 3 one sides are installed dryer 5; In frame 1 upper end suspension bracket 2 is set, on suspension bracket 2, utilizes lifting rope to be linked with circuit board 4; Said circuit board 4 can be along suspension bracket about 2, advance up and down; In said capillary groove 3, hold anti-humidity oil.
Embodiment one: the very color charactron PCB of a kind of LED circuit board high-voltage resistant waterproof processing method may further comprise the steps:
(1) toluene and acetone are mixed by mass ratio 1:1, preparation obtains mixed solution;
(2) organic siliconresin is mixed by mass ratio 1:0.8 with mixed solution obtain the organic siliconresin mixed solution, stir; Add silicon dioxide, 7% aluminium oxide, 3.5% chromium trioxide, 3.5% trbasic zinc phosphate and 7% the flake asbestos of relative organic siliconresin mixed solution quality 14%, stirring obtains anti-humidity oil; Said mixing speed is 50 rev/mins, and mixing speed is 3 minutes;
(3) with soaking 1 second in the PCB circuit board immersion anti-humidity oil, put into drying machine drying, described bake out temperature is 40 ℃, and drying time is 3 minutes.
Embodiment two: the very color charactron PCB of a kind of LED circuit board high-voltage resistant waterproof processing method may further comprise the steps:
(1) toluene and acetone are mixed by mass ratio 1:1.5, preparation obtains mixed solution;
(2) organic siliconresin is mixed by mass ratio 1:1.5 with mixed solution obtain the organic siliconresin mixed solution, stir; Add silicon dioxide, 13% aluminium oxide, 6.5% chromium trioxide, 6.5% trbasic zinc phosphate and 13% the flake asbestos of relative organic siliconresin mixed solution quality 26%, stirring obtains anti-humidity oil; Said mixing speed is 100 rev/mins, and mixing speed is 1 minute;
(3) with soaking 3 seconds in the PCB circuit board immersion anti-humidity oil, put into drying machine drying, described bake out temperature is 80 ℃, and drying time is 1 minute.
Embodiment three: the very color charactron PCB of a kind of LED circuit board high-voltage resistant waterproof processing method may further comprise the steps:
(1) toluene and acetone are mixed by mass ratio 1:1.2, preparation obtains mixed solution;
(2) organic siliconresin is mixed by mass ratio 1:1 with mixed solution obtain the organic siliconresin mixed solution, stir; Add silicon dioxide, 10% aluminium oxide, 5% chromium trioxide, 5% trbasic zinc phosphate and 10% the flake asbestos of relative organic siliconresin mixed solution quality 20%, stirring obtains anti-humidity oil; Said mixing speed is 80 rev/mins, and mixing speed is 2 minutes;
(3) with soaking 2 seconds in the PCB circuit board immersion anti-humidity oil, put into drying machine drying, described bake out temperature is 60 ℃, and drying time is 2 minutes.
The surperficial close attachment of the PCB circuit board after method for waterproofing of the present invention is handled has anti-humidity oil, stable in properties after 24 hours; Following 20 years consistency of normal temperature and pressure.The PCB circuit board of handling through anti-humidity oil was inserted in the water 24 hours, take out air-dry after, circuit board and electronic devices and components do not have any corrosion, performance is constant; Anti--60 ~+200 degrees centigrade of high low temperature, anti-20000 volts of high pressure.
Claims (3)
1. the very color charactron PCB of a LED circuit board high-voltage resistant waterproof processing method is characterized in that, may further comprise the steps:
(1) toluene and acetone are mixed by mass ratio 1:1 ~ 1.5, preparation obtains mixed solution;
(2) organic siliconresin is mixed by mass ratio 1:0.8 ~ 1.5 with mixed solution obtain the organic siliconresin mixed solution, stir; Add silicon dioxide, 7 ~ 13% aluminium oxide, 3.5 ~ 6.5% chromium trioxide, 3.5 ~ 6.5% trbasic zinc phosphate and 7 ~ 13% the flake asbestos of relative organic siliconresin mixed solution quality 14 ~ 26%, stirring obtains anti-humidity oil;
(3) with soaking 1 ~ 3 second in the PCB circuit board immersion anti-humidity oil, put into drying machine drying.
2. PCB circuit board high-voltage resistant waterproof processing method as claimed in claim 1 is characterized in that said mixing speed is 50 ~ 100 rev/mins, and mixing time is 1 ~ 3 minute.
3. PCB circuit board high-voltage resistant waterproof processing method as claimed in claim 1 is characterized in that described bake out temperature is 40 ~ 80 ℃, and drying time is 1 ~ 3 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100754293A CN102209440B (en) | 2011-03-28 | 2011-03-28 | Method and device for carrying out high-pressure-resistant water-proof treatment on PCB (printed circuit board) of LED (light-emitting diode) true-color nixie tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100754293A CN102209440B (en) | 2011-03-28 | 2011-03-28 | Method and device for carrying out high-pressure-resistant water-proof treatment on PCB (printed circuit board) of LED (light-emitting diode) true-color nixie tube |
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| Publication Number | Publication Date |
|---|---|
| CN102209440A CN102209440A (en) | 2011-10-05 |
| CN102209440B true CN102209440B (en) | 2012-11-21 |
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| CN2011100754293A Expired - Fee Related CN102209440B (en) | 2011-03-28 | 2011-03-28 | Method and device for carrying out high-pressure-resistant water-proof treatment on PCB (printed circuit board) of LED (light-emitting diode) true-color nixie tube |
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| CN108940770A (en) * | 2018-08-17 | 2018-12-07 | 北方电子研究院安徽有限公司 | A kind of modular circuit liquid coating method |
| CN110489011A (en) * | 2019-08-07 | 2019-11-22 | 佛山市华利维电子有限公司 | A kind of multifunctional optic wave room |
| CN113372721A (en) * | 2021-05-31 | 2021-09-10 | 深圳中望智能科技有限公司 | Novel environment-friendly organic silicon material |
| CN113861692A (en) * | 2021-09-27 | 2021-12-31 | 湖北平安电工科技股份公司 | Reinforcing agent and method for preparing high-temperature-resistant mica tape for cable by using same |
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| CN101148325B (en) * | 2007-09-06 | 2010-10-06 | 北京首创纳米科技有限公司 | Nano protecting liquid used for glass and preparation method thereof |
| CN101429418A (en) * | 2007-11-06 | 2009-05-13 | 吕柏涛 | Method for producing organic silica gel adhesive agent |
| US8575235B2 (en) * | 2009-06-12 | 2013-11-05 | Industrial Technology Research Institute | Removable hydrophobic composition, removable hydrophobic coating layer and fabrication method thereof |
| TWI454516B (en) * | 2009-06-12 | 2014-10-01 | Ind Tech Res Inst | Removable hydrophobic composition, removable hydrophobic coating layer and fabrication method thereof |
| CN201967255U (en) * | 2011-03-28 | 2011-09-07 | 无锡科依德光电科技有限公司 | High-voltage resistant waterproof processor for PCB (printed circuit board) of LED (light-emitting diode) true color nixietube |
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