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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

Inactive Publication Date: 2012-10-31
瀚宇博德科技(江阴)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the PCB manufacturing process, the front dry film process is particularly important. In the dry film process, the dry film developing tank needs to be cleaned. Conventional cleaners, such as "an alkaline cleaner" published in Chinese patent ZL201110080387.2 Tank agent "uses alkaline solution to clean the dirt on the tank wall; but in actual use, it is found that this kind of alkaline cleaning agent not only needs to be heated during cleaning, but also takes a long time to clean and the cleaning effect is not good enough.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention relates to a cleaning agent for a dry-film developing tank of a printed circuit board (PCB). The cleaning agent comprises a solvent A and a solvent B, wherein the solvent A comprises the following components in percentage by weight: 15% to 20% of phosphoric acid, 4% to 10% of acetic acid and the balance of water; and with the solvent A as the basic quantity, the solvent B comprises the following components in percentage by weight: 3% to 6% of emulsifying agent, 0.5% to 1% of solubilizer, and 1% to 3% of surfactant. The cleaning agent for the dry-film developing tank of the PCB has the advantages of low cleaning temperature, short cleaning time and good cleaning effect.

Description

technical field [0001] The invention relates to a cleaning agent and a cleaning method for cleaning a PCB dry film developing tank, and a preparation method of the cleaning agent. Background technique [0002] At present, PCB is used as the substrate of electronic devices, and its quality directly determines the performance of the entire circuit. In the PCB manufacturing process, the front dry film process is particularly important. In the dry film process, the dry film developing tank needs to be cleaned. Conventional cleaners, such as "an alkaline cleaner" published in Chinese patent ZL201110080387.2 Tank agent "uses alkaline solution to clean the dirt on the tank wall; but in actual use, it is found that this kind of alkaline cleaning agent not only needs to be heated during cleaning, but also takes a long time to clean and the cleaning effect is not good enough. . Contents of the invention [0003] The object of the present invention is to overcome the above-mentione...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D10/02G03F7/30
Inventor 钟强许国祥刘兴才王萌
Owner 瀚宇博德科技(江阴)有限公司
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