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Circuit board anti-corrosion paint

Model:X-360
Brand:Grace times blessing
Origin:Made In China
Category:Chemicals / Adhesives & Sealants
Label:Anti-corrosion paint , Moistureproof paint , Electronic anti-corr
Price: ¥75 / kg
(US $12.2)
Min. Order:20 kg
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Company Information

Detail

Hangzhou grace times f chemical Co., LTD

Country/Region:
Zhe Jiang - China
Business Nature:
Manufacturer
Phone:
15558083189
Contact:
WangBo (salesman )
Last Online:
04 Mar, 2014
This Co. have total 18 Related Items 12345678910

Product Description

Three proofing lacquer also called PCB electronic circuit board extend, overburden oil, waterproof glue peso, JueYuanQi, moistureproof lacquer, anti-corrosion coatings, anticorrosive paint, waterproof, salt fog lacquer, dustproof paint, paint, the beatles overburden paint protection, three - such as glue, had used anti-corrosion paint of PCB a waterproof, moistureproof, dustproof "three proofing" performance and cold and hot shock resistance, ageing resistance, resistance to radiation, salt-fog resistant, ozone and corrosion resistance vibration, good flexibility, good adhesion, such as performance, thereby improving and prolonging their service life, ensure use of safety and reliability.

 

 

In order to make three proofing lacquer play excellent performance, the operation process is very important. Three proofing lacquer using process has the following four:

 

Anti-corrosion paint brush besmear of operation of craft

 

 

 

 

 

Anti-corrosion paint brush besmear of operation of craft

 

Brushing besmear method is the most simple coating method. Usually used for local repair and maintenance, also can be used in laboratory environment or small batch trial-production/production, general is coated with quality requirement is not very high occasion.

 

Brush besmear of advantage is almost without equipment fixtures investment; Save coating material, Generally do not need to cover processes.

 

Defect is narrow scope, Efficiency lowest, The whole BanShua besmear has covered effect, coating consistency is worse, for manual operation, easy appear bubbles, corrugated, thickness nonuniformity defects, Need a large number of labor.

 

Note:

 

Brushing besmear before, it must ensure dilution products fully mixing, best placed 2 hours.

 

Cheng fang anti-corrosion paint containers should use metal or plastic, wood, PVC not ok, because produces chemical reaction, corrosion containers, destroying the products.

 

Clean and dry board, to remove moisture and water.

 

To besmear object surface dust, moisture and smeary must cleanse, thoroughly clean can ensure corrosive residue was completely cleared, and makes three proofing paint nicely stuck to the board surface.

 

Brush choice is very important, because the product before curing product does not insulation, so should choose antistatic, not wool brush, such as high quality natural fiber brush.

 

When brushing besmear board as far as possible on flat surface, after brushing besmear did not due, brushing besmear should level off, also cannot have exposed part, 0.1-0.3 mm between advisable.

 

After brushing besmear of PCB not handstand placed, such meetings make coating on thin under thick, still want to lie.

 

Three proofing lacquer operation of craft soaking and coating method

 

 

 

 

 

Three proofing lacquer operation of craft soaking and coating method

 

Soak besmear of coating process from initial inception, has had a extensive use, apply to need completely coated circumstance; Just as coated effect is concerned, soaking and coating method is one of the most effective ways.

 

Soak besmear of advantage is: can adopt manual or automatic coating. Which manual operation simple and small investment, Material transfer rate is high, can fully coated with the entire product without shielding effect. And automation soaking and coating equipment can meet the need of mass production.

 

Soak besmear of defect is: coating material container if open, with the increase of number of coating, can have impurities problems, it is necessary to change regularly materials and clean containers with solvent, according to the hair also needs supplemented unceasingly, Excessive and spare circuit board thickness after many materials for drip waste; Need covering part, Cover/remove the cover requires a lot of manpower and material resources, Coating quality is difficult to control. To cause sexual poor. Too much manual operation may cause of products into unnecessary physical damage,

 

Soak besmear of point is: should with density meter is designed monitor the loss, in order to guarantee the solvent reasonable matching, Immersion and pump out speed should be controlled. To obtain satisfactory coating thickness and can reduce bubble etc defects, Should be in clean and temperature/humidity controlled under the environment of the operation. Lest affect material point bonding forces; Should choose no glue reside and anti-static cover of tape, if choose ordinary tape, it must be used to ion fan.

 

Leaching of besmear of precautions:

 

PCB components should be vertical submerged coating worse.

 

Do not immerse connector, unless carefully cover, circuit board should be immersed 1 minute until bubbles disappear, then slowly pulled out.

 

The board surface will form a layer of uniform membrane layer. Should make the most of the paint residue from PCB upper back to soak film machine.

 

PCB or components immersion speed shoulds not be too fast, lest produce overmuch bubbles.

 

Leaching after besmear again when using, if the surface has crust phenomenon will remove cuticular, can continue to use.

 

Three proofing lacquer operation of craft spraying method

 

 

 

 

 

Three proofing lacquer operation of craft spraying method

 

 

 

Spraying method is the industry the most commonly used coating method, divide again machines automatic spraying and manual spraying two kinds.

 

Among them, the machine automatically spraying applies to mass production, large or long-term production of customers. Advantage: can selectively spraying, high precision, even, high efficiency, and can automatically detect. Defect is: high cost of operating the demand is higher, and the accuracy of the shadow (components may produce not cover anti-corrosion paint place).

 

And manual spraying is generally use handheld gun + tracheal + compressor (+ exhaust fan) combination. Advantage: low cost, suitable for medium customers. But it needs more pressure, can form 5KG WuZhang, so in atmospheric pressure regulating the demand is higher, if air pressure is not high, anti-corrosion paint not atomization, drawing, manual spraying on operation accuracy requirement is high.

 

Hand press cans spraying is also a kind of manual spraying, using spray cans type products, widely applied for repair and small-scale production, the biggest advantage is convenient.

 

Anyhow, the manual spraying small investment and easy operation, Machine automation spraying coating have good consistency, the production efficiency is highest, easy to realize the on-line automation production, can suitable for large and medium-sized batch production. Consistency and material costs will usually superior soaking and coating method, although also need to cover process but not as leaching besmear demanding.

 

The corresponding defect is: need to cover processes; The material waste; Need a large number of labor, Coated with tolerance, there may be a cover effect, to narrow spacing components below into trapped dimension.

 

Three proofing lacquer operation of craft curtain coating method

 

Curtain coating method is a less the anti-corrosion paint coating method.

 

Stored in high the vats anti-corrosion paint, through the nozzle or narrow gap under a curtain, shower shower in the shape of conveyors driven by the thing on besmear, forming a uniform film. Redundant anti-corrosion paint is flowing to container, through the pump to high trough of recycling.

 

Small batch production commonly used while manual operation, directly to the product pouring anti-corrosion paint, therefore curtain coating method called again poured finishes.

 

Mass production commonly used while automatic assembly line operation, by adjusting the nozzle of the size or narrow gap width, to control product on three proofing coating film thickness. If the paint film thicker, by the conveyor belt classics drying box out of the products, the film will appear bubbles. If the paint film is thinner, the product will appear show, drench besmear not uniform. Consequently curtain coating method called curtain coating.

 

According to the characteristics of different products, in order to increase anti-corrosion coating membrane on product adhesion, sometimes you should add sulfur, In order to increase product thickness, need more tests for products once or several curtain coating and add sulfur.

 

Anti-corrosion paint handling process requirements:

 

1, clean and dry board, to remove moisture and water. Must first will about to besmear objects surface dust, moisture and smeary cleanse to give full play to its protection performance. Thoroughly clean can ensure corrosive residue was completely cleared, and makes three proofing paint nicely stuck to the board surface. Baking plate 60 ° C, conditions: 10-20 minutes in oven out after strike coated with better results,

 

2, by brush method coating, brushing besmear area than devices should be accounted for by large area, in order to assure all cover devices and pad,

 

3, as far as possible when brushing besmear plate on flat surface, after brushing besmear did not due, brushing besmear should level off, also cannot have exposed part, 0.1-0.3 mm between advisable.

 

4 in with brush and spray, ensure dilution products before fully mixing, and the brush or spraying, placed before 2 hours. Using high quality natural fiber brush, brush gently in room temperature circumstance besmear soaking and coating. Such as the use of machinery, the viscosity of measuring coating should be (with viscosity agent or flow cups), can use thinner adjustment viscosity.

 

5. PCB components should be vertical submerged coating worse. Do not immerse connector, unless carefully cover, circuit board should be immersed 1 minute until bubbles disappear, then slowly pulled out. The board surface will form a layer of uniform membrane layer. Should make the most of the paint residue from PCB upper back to soak film machine. TFCF have different coating requirements. PCB or components immersion speed shoulds not be too fast, lest produce overmuch bubbles.

 

6. Soak besmear again after when using, if the surface has crust phenomenon will remove cuticular, can continue to use.

 

7. After brushing besmear flat on scaffolds, ready to solidify, need to use the heating method is coating accelerating curing. If the coating surface rough or containing bubbles, add in GaoWenLu in in room temperature curing should be placed more some time so that the solvent braising out.

 

Note:

 

1, if hope to get thicker coating, best through besmear two thin coating to obtain -- and requirements must be on the first floor completely dry before allowing besmear tier 2.

 

2, in to the PCB besmear coating, the general connectors, software plug, switch, radiator, cooling area, plug-in boards areas are not allowed to have coating material, it is recommended to use can be torn sex prevent weld glue cover.

 

3. Membrane layer thickness: membrane layer thickness depends on the application method. Thinners to join, large amounts of glue low viscosity, gelatinize thickness thin, Conversely, glue, glue the viscosity of high thickness of thick.

 

4. All coating operations should not under 16 ℃ and relative humidity under 75% of conditions. PCB as compound material will suck up moisture. If you don't go to tide, anti-corrosion paint is not fully protection. Pre dry, vacuum drying can remove most moisture.

 

Repair has coated devices methods:

 

If repair has coated devices, just put welding DianLaoTie direct contact with coating can remove the components, install new components, then the area with brush or solvent clean, then dry, to use paint coated with good.

 


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Send Inquiry to this Company

Hangzhou grace times f chemical Co., LTD

Hangzhou city, zhejiang province, JiangGanOu strict home road

Phone:
086-0571-86738336
Fax:
86-0571-86793832
Contact:
WangBo (salesman )
Mobile:
15558083189


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