CN201204746Y - Moistureproof circuit board - Google Patents
Moistureproof circuit board Download PDFInfo
- Publication number
- CN201204746Y CN201204746Y CNU2008200637325U CN200820063732U CN201204746Y CN 201204746 Y CN201204746 Y CN 201204746Y CN U2008200637325 U CNU2008200637325 U CN U2008200637325U CN 200820063732 U CN200820063732 U CN 200820063732U CN 201204746 Y CN201204746 Y CN 201204746Y
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- CN
- China
- Prior art keywords
- circuit board
- moistureproof
- proof
- utility
- model
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Non-Metallic Protective Coatings For Printed Circuits (AREA)
- Paints Or Removers (AREA)
Abstract
The utility model discloses a moistureproof circuit board, comprising a circuit board and an electric appliance element, the surface of which has a layer of paint. The utility model has a simple structure and a low production cost, improves the fire resistant and flame-proof performance while guaranteeing the circuit board with good moisture-proof, anti-salt mist and anti-fungus property, and is suitable for all circuit boards.
Description
Technical field the utility model relates to a kind of circuit board, especially can moistureproof inverter circuit plate
The background technology circuit board is a part that often uses in various electrical equipment, the equipment.Circuit board is normally exposed, therefore can be short-circuited under high temperature, high humidity or salt mist environment condition, accident such as electric leakage, causes electrical equipment, device damage, may cause the personal security accident when serious.
Chinese patent CN2165580 number disclosed " bathroom moisture proof telephone " patent (application number: 93211198.X), be the film that is coated with one deck sealing and moistureproof usefulness on the electronical elements surface on the circuit board in the phone support; Can be under any abominable wet environment, guarantee speech quality, and do not influence the normal use of its machine with its machine and time spent.The weak point of this patent is: cover the film of moistureproof usefulness on the electronical elements surface, can only solve problems such as electronic component and electronic component, electronic component and circuit board are short-circuited, electric leakage, can't solve problems such as circuit board is short-circuited, electric leakage.
Chinese patent CN2836067 number disclosed " the LonWorks network intelligence controller of high temperature resistance high humidity, salt air corrosion " patent (application number: 200620070831.7), comprise casing and be arranged on interior circuit board of casing and the electric elements that are arranged on the circuit board, it is characterized in that on the outer surface of casing, being provided with one deck military green acrylic baking paint overcoat, be provided with one deck DJB-823 solid film protective agent overcoat on the surface of circuit board and electric elements; Being provided with of overcoat guaranteed that circuit board has good moisture proof, anti-salt fog and mould proof performance.The weak point of this patent is: the DJB-823 solid film has good Corrosion Protection greasy property and electric property, but inflammable, has therefore increased fire risk.
On the other hand, the composition of common coating is magnesia powder 30-50%, pearl essence 20-40%, mica powder 15-30%, Ludox 3-9%, white glue with vinyl 1-5%, polyacrylamide 0.1-0.8%, sodium carboxymethylcellulose 0.1-0.8%, adsorbent 1-6%, fire retardant 0.3-2%.Earlier adsorbent, sodium carboxymethylcellulose, polyacrylamide are added the water wiring solution-forming respectively during preparation, mix together with aggregate and other compositions again.Common coating has unique acidproof, alkaline-resisting, chemical stability, also has good insulation performance and thermal endurance, noninflammability, anti-corrosive properties.
The summary of the invention the purpose of this utility model will provide a kind of moisture-proof circuit board exactly, prevents the fail safe of accidents such as short circuit, electric leakage.
In order to achieve the above object, a kind of moisture-proof circuit board that the utility model provides comprises circuit board and electric elements, wherein, has a coating on circuit board and electric elements surface.
A kind of moisture-proof circuit board that the utility model provides compared with prior art, has positive effect: on circuit board and electric elements surface, have a coating, simple in structure, cheap for manufacturing cost, guaranteeing that circuit board has on the basis of good moisture proof, anti-salt fog and mould proof property, increase high temperature resistant and fire resistance, be applicable to all circuit boards.
Description of drawings the utility model will be further described in conjunction with the accompanying drawings, please referring to accompanying drawing:
Accompanying drawing 1 expression schematic diagram of the present utility model.
Structure shown in the accompanying drawing 1 comprises: electric elements 1, coating 2, circuit board 3.
A kind of moisture-proof circuit board that embodiment the utility model provides comprises circuit board 3 and electric elements 1, wherein, has a coating 2 on circuit board 3 and electric elements 1 surface.
The utility model protection range relates to all changes form recited above.
Claims (1)
1, a kind of moisture-proof circuit board comprises circuit board (3) and electric elements (1), it is characterized in that: have a coating (2) on circuit board (3) and electric elements (1) surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200637325U CN201204746Y (en) | 2008-06-08 | 2008-06-08 | Moistureproof circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200637325U CN201204746Y (en) | 2008-06-08 | 2008-06-08 | Moistureproof circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201204746Y true CN201204746Y (en) | 2009-03-04 |
Family
ID=40427059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200637325U Expired - Fee Related CN201204746Y (en) | 2008-06-08 | 2008-06-08 | Moistureproof circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201204746Y (en) |
-
2008
- 2008-06-08 CN CNU2008200637325U patent/CN201204746Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090304 |