Nanhui circuit board cleaning defoamer defoaming solution

Customer question

The operation of computers and mechanical equipment is inseparable from the circuit board. In the circuit board substrate cleaning, circuit board water treatment, film removal, etching, development, sewage treatment process and the entire PCB process, if you encounter foam problems, it may affect The quality of circuit board development even seriously affects normal development processing. In view of the blistering problem of the circuit board, in fact, a special defoamer for the circuit board can be used for treatment. The following is the circuit board defoaming solution provided by Nanhui for customers.

(Picture: circuit board)

1. Customer information: A manufacturer of circuit boards in Guangzhou encountered the problem of circuit board blistering and did not know how to solve it. An experienced friend suggested to use a defoamer to solve it. Through the introduction of a friend, contact Nanhui, Hope that Nanhui defoamer manufacturers can provide targeted circuit board defoaming solutions.

2. Sample information: circuit board cleaning agent

Customer request

1. When added to the circuit board cleaning agent, the foam can be quickly eliminated without affecting the circuit board cleaning.

2. It does not affect other production processes of circuit boards.

(Picture: Nanhui circuit board defoamer sample)

Solution

1. Causes of blistering on the circuit board

(1) The circuit board has poor contact with copper sinking, and the heat will continue to increase to produce foam. During the process of processing and cleaning, it is oxidized due to problems such as drilling and water washing. The transportation in the workshop is stopped for too long and the workshop is in contact with oil and dust. The cleaning does not meet the standard. Foam, there will be quality problems.

(2) In the dry film process of the printed circuit board production process, the unexposed dry film is removed by development. The dry film is photosensitive insulating resin, and the developer is sodium carbonate solvent. Due to the continuous dissolution of the dry film, the developer produces a certain amount of foam during the system's circulating spraying process. When the foam reaches a certain level, it will affect the quality of the development, cause inconvenience to production, and affect the production schedule.

(3) Since the circuit board cleaning agent contains a variety of surface active substances, it is easy to produce stable foam during cleaning, and the foam will make it difficult to clean the dust.

(Picture: Circuit board production link)

2. The hazards of circuit board blistering

(1) Foam will lead to defective circuit board developing boards, making it difficult to carry out inspections;

(2) Foam will affect the normal process of development;

(3) Foaming during the developing process will affect the developing quality;

(4) Too much foam affects the cleaning of the board.

3. Recommend circuit board defoamer

The circuit board defoamer developed by Nanhui is a silicone polyether compound defoamer, which is easy to disperse in an aqueous system, convenient to use, and has fast defoaming and continuous foam suppression functions. Withstand high temperature, the temperature can reach 90℃. Compared with common silicone defoamers on the market, it has the advantages of good water solubility, no oil phase or less oil phase, and no residue.

4. Application fields of circuit board defoamer

Nanhui circuit board defoamer is used for circuit board substrate cleaning, circuit board water treatment, film removal, etching, development, sewage treatment, and CB defoaming and anti-foaming use in the entire process. (For more application scenarios, please contact online customer service for consultation)

5. Targeted circuit board defoaming experiment program

Nanhui metalworking fluid defoamer is added in the production, which can control the foam from the production source, optimize the formula of the metalworking fluid, reduce the surface tension of the system, and reduce the foaming power. The defoaming agent can also be added during the use of metalworking fluids, generally about three thousandths of the foaming system. The addition amount is small, which can quickly defoam the foam and inhibit foam regeneration for a long time.

The source manufacturer of Nanhui defoamer can solve various industrial foam problems in a targeted manner. If you encounter bubble problems in related industries, you can call Nanhui technical specialist Yoyo +86 134 28601010