What should I pay attention to when using defoamers for PCB delamation?

The defoamer for PCB decoating is a concentrated defoaming and antifoam agent prepared with special ethers as the main ingredient and supplemented by additives. It will not cause silica spots to remain on the tank wall, and it is easy to clean the equipment. This product has excellent antifoam inhibition performance, in addition to high stability and water dispersion performance.

This product is specially designed for the cleaning of circuit boards in the process of developing, stripping and water treatment of strong alkaline water, and can also be widely used in development. The characteristics of this product are; In the cleaning solution, it does not break the emulsion, does not block the net, does not float, does not affect the post-processing and has strong foam inhibition ability;

Second, product characteristics.

1. Low COD value, easy wastewater treatment; 2. Easy to wash, will not cause residue on the board surface; 3. It can be compatible with dry film and green paint of any manufacturer; 4. It is very stable in strong alkali; 5. It is easy to emulsify and disperse, and can play an excellent dispersion effect and improve workability; 6. Because it does not contain toxic substances, it will not affect people and machinery.

3. Physical and chemical properties.

Appearance: Colorless clear liquid to translucent liquid Colorless clear liquid to translucent liquid.

Viscosity(25) 200-1500MPas 200-1500MPas Water solubility Easy to disperse in water Can be dispersed in water.

Application recommendations; In the development of the use of recommendations; It is used in the removal of the film.

In order to. 1. Low COD value, easy wastewater treatment; 2. Easy to wash, will not cause residue on the board surface; 3. It can be compatible with dry film and green paint of any manufacturer; 4. It is very stable in strong alkali; 5. It is easy to emulsify and disperse, and can play an excellent dispersion effect and improve workability; 6. Because it does not contain toxic substances, it will not affect people and machinery.

3. Physical and chemical properties.

Appearance: Colorless clear liquid to translucent liquid Colorless clear liquid to translucent liquid.

Viscosity(25) 200-1500MPas 200-1500MPas Water solubility Easy to disperse in water Can be dispersed in water.

Application recommendations; In the development of the use of recommendations; It is used in the removal of the film.

Features of defoamer for PCB delamination:

1. Low COD, low consumption, strong defoaming power, high stability, and not easy to decompose;

2. Good washability, will not remain on the board surface, resulting in quality defects in the post-process;

3. It will not affect the dry film to cause seepage, will not affect the solderability, and has a wide range of operation.

Be mindful of usage.

1) General dosage: Stir evenly before use, and the dosage depends on the model and the actual situation.

2) Note: When using, please dilute 2 or 3 times with water, stir evenly or use directly.

Pay attention to storage, transportation, packaging and transportation.

Packing: This product is packed in 50kg, 120kg and 200kg plastic drums.

Storage: This product is not a dangerous product, non-toxic, non-flammable, sealed and stored in a cool, ventilated and dry place indoors. The container should be tightly sealed after each use before it is used up. The shelf life is about 25 months, and the shelf life is 12 months.

Transportation: This product should be sealed well during transportation, and impurities such as moisture, strong alkali, strong acid and rainwater should be mixed.

PCB stripping is to get the required pattern after the board has been etched process, but because the etched potion will have a corrosive effect on the conductive metal, so use dry film or wet film to protect the pattern we need, and the film must be removed after getting the required pattern, most of the dropping is used in the drop, and most of the potion is easy to react with the surrounding water vapor and carbon dioxide, and the amount of heat that will be released, the foam is generated, if the foam is not properly handled, it will leave stains on the PCB, affecting the quality of the product.

Therefore, when using defoamer for PCB decoating, it is necessary to use the defoamer correctly: the selection of defoamer should be targeted, and the use environment, temperature, pH value and foaming medium should be understood.

First small test, then pilot test, to determine the best product to use and the best dosage. Stir well after delamination, even if it is not layered, stir well before use, do not dilute at will, if you do want to dilute, please use thick aqueous solution under guidance.

In terms of usage: First, add the defoamer for PCB decoating to the foaming system to disperse evenly. Secondly, if you need to dilute the defoamer, it is recommended that you use it up on the same day and not store it for a long time.

Finally, if the blistering system is greater than 60, it is recommended that you add it before 60 to get the most out of it.

The defoamer for PCB film removal can be directly added or diluted with water in the foaming solution during the production process, or added in the tank solution in advance to achieve foam inhibition and defoaming, the dosage is 0 1 0 3%, and the sample can be sampled before use, and the specific amount added is according to the actual situation.

1. Low COD, low consumption 2, strong defoaming power, high stability, not easy to decompose;

2. Good washability, will not remain on the board surface, resulting in quality defects in the post-process;

3. It will not affect the dry film to cause seepage, will not affect the solderability, and has a wide range of operation.

The characteristics of the defoamer for circuit board delamation: no demulsification, no net blockage, no floating, no impact on the post-processing and strong foam inhibition ability in the cleaning solution;