Cleaning agent for dry-film developing tank of printed circuit board (PCB) and preparation method of cleaning agent
A cleaning agent and dry film technology, applied in the field of cleaning agents, can solve the problems of insufficient cleaning effect and long cleaning time, and achieve the effects of low corrosion, convenient storage, and reduced power consumption
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Embodiment 1
[0052] Solvent A: (Preparation 100KG)
[0053] Phosphoric acid: 15KG, (accounting for 15%)
[0054] Acetic acid: 4KG, (accounting for 4%)
[0055] Water: 71KG; (accounting for 71%)
[0056] Solvent B, based on solvent A:
[0057] Emulsifier selection OP-10: 3KG, (3 / 100=3% of the weight of solvent A)
[0058] The choice of solubilizer is ethylene glycol monobutyl ether: 0.5KG, (0.5 / 100=0.5% of the weight of solvent A)
[0059] Surfactant selection table Water-soluble polyether: 1KG, (1 / 100=1% of the weight of solvent A)
[0060] Solvent A and solvent B were weighed and mixed uniformly according to the above ratio. When solvent A was prepared, the active ingredients phosphoric acid and acetic acid were put into water in turn. Stir evenly at room temperature to make it completely dissolve, and the appearance is a colorless uniform transparent or slightly light yellow liquid cleaning agent, which can be used.
[0061] When using, use 15% ratio (take 100KG as an example, the...
Embodiment 2
[0063] Solvent A composition: (preparation 100KG)
[0064] Phosphoric acid: 20KG,
[0065] Acetic acid: 10KG,
[0066] Water: 70KG;
[0067] The composition of solvent B agent is based on the amount of solvent A agent:
[0068] Emulsifier selection OP-10: 6KG
[0069] Solubilizer selection ethylene glycol monobutyl ether: 1KG
[0070] Surfactant (water-soluble polyether): 3KG.
[0071] Preparation method is with embodiment one,
[0072] When in use, add 15% into water to clean the PCB dry film developing tank. The cleaning time is 2H, and then add water to clean for 1H. The cleanliness meets the requirements and there is no corrosion to the tank.
[0073] cleaning temperature cleaning time Dry film residue dissolution rate Cleaning agent of the present invention 30℃ 2H 90% regular cleaning agent 50℃ 4H 50%
[0074] Conventional cleaning agents need to be heated to enhance the solubility of dry film residues, but the present invention us...
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