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Cleaning agent for printed circuit board and preparation method

A printed circuit board and cleaning agent technology, which is applied in the preparation of detergent mixture composition, detergent composition, detergent compounding agent, etc., can solve the problem of corrosion on the surface of copper plates, high defective rate, and the quality of circuit boards produced. impact and other issues, to achieve the effect of increasing the yield rate, improving the cleanliness of washing, and ensuring normal production

Inactive Publication Date: 2018-05-29
UNIV OF SCI & TECH LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the production process of printed circuit boards, the dry film plays a role that other photoresists cannot play in terms of manufacturing fine lines, increasing productivity, simplifying the process, and improving product quality. The garbage generated after the production has a direct impact on the quality of the produced circuit boards
However, the industry still mainly adopts the method of graphic electroplating to produce substrates. The film broken open circuit gap has always been the main defect that affects the overall scrapping of the outer layer. In the developing process, the residual glue after the development process is not rinsed cleanly, which leads to the film broken open circuit gap and thus lead to defective products. An important reason for the high rate
Conventional cleaning agents, such as Chinese patent ZL201110080387.2, utilize alkaline solution to clean the dirt on the tank wall and are not suitable for cleaning dirt on printed circuit boards, because the surface of copper plates will be corroded due to alkalinity; another patent CN102757871A is also not applicable Remove the dirt on the printed circuit board, because the acidic substances in the system will also corrode the surface of the copper plate

Method used

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  • Cleaning agent for printed circuit board and preparation method
  • Cleaning agent for printed circuit board and preparation method
  • Cleaning agent for printed circuit board and preparation method

Examples

Experimental program
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Effect test

preparation example Construction

[0041] A preparation method for a printed circuit board cleaning agent, comprising the following steps:

[0042] 1) Add the emulsifier into deionized water and stir until completely dissolved;

[0043] 2) Add a solubilizer to the solution obtained in step 1), and stir until completely dissolved;

[0044] 3) Add defoamer and stir until completely dissolved;

[0045] 4) Add the pH regulator and stir until completely dissolved;

[0046] 5) Add surfactant and mix to obtain finished product.

[0047] In step 1), the temperature of the solution is controlled at 10-30° C. during the stirring process.

[0048] Using the cleaning agent of the present invention, the dosage and cleaning effect of the cleaning agent are significantly higher than those of conventional cleaning agents, and the residual substances after dry film development can be removed efficiently, the normal production of the printed circuit board process can be ensured, and the yield rate of printed circuit boards ca...

Embodiment 1

[0057] Emulsifier: 5kg;

[0058] Solubilizer: 1kg;

[0059] Defoamer: 0.1kg;

[0060] pH regulator: 1kg;

[0061] Surfactant: 3kg;

[0062] The balance is deionized water: 89.9kg;

[0063] Configure a cleaning agent with a total mass of 100kg, choose TX-10 as emulsifier; fatty alcohol polyoxyethylene-polyoxypropylene ether as solubilizer; choose polyether type GP defoamer as defoamer; choose sodium carbonate as pH regulator; surfactant Choose Sodium Lauryl Sulfate.

[0064] Preparation method: first mix emulsifier TX-10 with deionized water and stir to dissolve, then add fatty alcohol polyoxyethylene-polyoxypropylene ether, polyether type GP defoamer, sodium carbonate, sodium dodecylsulfonate in sequence , Stir under normal temperature and pressure to make it all dissolve. Obtain a colorless and transparent liquid cleaning agent, ready to use.

[0065] When in use, add 3% cleaning agent to the water, the cleaning temperature is 30±2°C, and the cleaning time is 20 minute...

Embodiment 2

[0069] Emulsifier: 5kg;

[0070] Solubilizer: 1kg;

[0071] Defoamer: 0.1kg;

[0072] pH regulator: 1kg;

[0073] Surfactant: 3kg;

[0074] The balance is deionized water: 89.9kg;

[0075] Configure a cleaning agent with a total mass of 100kg, choose NP-10 as emulsifier; fatty alcohol polyoxyethylene-polyoxypropylene ether as solubilizer; choose polyether GP defoamer as defoamer; choose sodium carbonate as pH regulator; surfactant Choose Sodium Lauryl Sulfate.

[0076] Preparation method: firstly mix emulsifier NP-10 with deionized water and stir to dissolve, then add solubilizer fatty alcohol polyoxyethylene-polyoxypropylene ether in sequence, defoamer choose polyether type, pH adjuster choose sodium carbonate, surface The active agent is sodium dodecylsulfonate, which is stirred under normal temperature and pressure to dissolve it completely. Obtain a colorless and transparent liquid cleaning agent, ready to use.

[0077] When in use, add 3% cleaning agent to the water,...

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Abstract

The invention relates to a cleaning agent for a printed circuit board and a preparation method. The cleaning agent for the printed circuit board is prepared from the following raw materials in parts by weight: 5 to 15 parts of an emulsifying agent, 1 to 5 parts of a solubilizing agent, 0.1 to 3 parts of an anti-foaming agent, 1 to 3 parts of a pH regulating agent, 3 to 8 parts of a surfactant, andthe balance of deionized water, wherein the emulsifying agent is selected from a TX and / or NP-series emulsifying agent; the solubilizing agent is one or a mixture of two of polyoxyethylene hardened castor oil, polyoxyethylated castor oil, fatty alcohol-polyoxyethylene ether, fatty alcohol polyoxyethylene-polyoxypropylene ether, polyoxyethylene dehydrated sorbitol aliphatic ester and polyglycerolfatty acid ester; the pH regulating agent is a mixture of ammonia water, sodium carbonate and sodium bicarbonate. The cleaning agent for the printed circuit board has the advantages that adhesive residue flushing cleanliness is improved, trace impurity residue after a dry film is developed can be effectively eliminated, normal production of a printed circuit board flow is ensured, and the yield ofthe printed circuit board production is increased.

Description

technical field [0001] The invention relates to the technical field of cleaning of printed circuit boards, in particular to a cleaning agent and preparation method for printed circuit boards after the dry film development of printed circuit boards. Background technique [0002] With the rapid development of high-frequency, high-speed digital, portable and multi-functional electronic products, the requirements for parameters such as line width and line gap of printed circuit board substrates are getting smaller and smaller. In the production process of printed circuit boards, the dry film plays a role that other photoresists cannot play in terms of manufacturing fine lines, increasing productivity, simplifying the process, and improving product quality. The garbage generated in the end has a direct impact on the quality of the produced circuit boards. However, the industry still mainly adopts the method of graphic electroplating to produce substrates. The film broken open ci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D1/83C11D3/10C11D3/04C11D3/38C11D3/37C11D3/60C11D11/00
CPCC11D1/83C11D3/044C11D3/10C11D3/373C11D3/38C11D1/74C11D1/667C11D1/72C11D1/22C11D1/008C11D2111/22
Inventor 肖国勇鲁云华迟海军董岩胡君一房庆旭胡知之
Owner UNIV OF SCI & TECH LIAONING
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