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Neutral semi-water-based cleaning agent for high-performance electronic product printed board assembly piece, preparation method and application thereof

A technology for electronic products and printed boards, which is applied in the field of neutral semi-water-based cleaning agents for printed board assemblies of high-performance electronic products and its preparation. Achieve excellent high and low temperature stability, safe transportation and storage, and good compatibility

Inactive Publication Date: 2021-11-19
华阳新兴科技(天津)集团有限公司 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, in order to ensure the cleaning effect, some semi-water-based flux cleaning agents generally have the disadvantages of strong alkalinity and easy corrosion of circuit boards and cleaning equipment. Oxidized discoloration, swelling, deformation, shedding, etc.
If the spray cleaning equipment is used with a strong alkaline cleaning agent for a long time, it is easy to cause the nozzles and other parts in the spray tank to be corroded
The working liquid of some cleaning agents will produce high foam when spraying, which cannot be used with spray cleaning equipment. It is only suitable for manual scrubbing, which reduces production efficiency, thus limiting the use of these products in integrated circuits and electronic components. Extensive use in cleaning

Method used

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  • Neutral semi-water-based cleaning agent for high-performance electronic product printed board assembly piece, preparation method and application thereof
  • Neutral semi-water-based cleaning agent for high-performance electronic product printed board assembly piece, preparation method and application thereof
  • Neutral semi-water-based cleaning agent for high-performance electronic product printed board assembly piece, preparation method and application thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0044] The preparation method of the above-mentioned high-performance electronic product printed board assembly neutral semi-water-based cleaning agent, the steps are as follows:

[0045] A. Weigh glycol ether ester solvent, aliphatic dihydric alcohol, accelerator, acetylene glycol active agent, benzotriazole derivative, hydroxycarboxylic acid and DI water according to the mass ratio;

[0046] B. At room temperature, add the above raw materials into the stirring tank, start stirring, the speed is 100-300r / min, and the time is 30-60min. After mixing evenly, the neutral semi-water of the high-performance electronic product printed board assembly is obtained. base cleaner.

[0047] Application of the above-mentioned neutral semi-water-based cleaning agent for printed board assemblies of high-performance electronic products in the cleaning of printed boards of electronic products.

[0048] The method for cleaning printed board assemblies of high-performance electronic products us...

Embodiment 1

[0052] A neutral semi-water-based cleaning agent for printed board assemblies of high-performance electronic products, its raw material composition and weight percentage are:

[0053] Propylene glycol methyl ether acetate 45%, 2-methyl-2,4-pentanediol 25%, accelerator 10%, tetramethyldecynediol 8%, benzotriazole derivatives 0.5%, DL- Hydroxysuccinic acid 1%, DI water balance.

[0054] The preparation method steps of the above-mentioned high-performance electronic product printed board assembly neutral semi-water-based cleaning agent are as follows:

[0055] Weigh propylene glycol methyl ether acetate, 2-methyl-2,4-pentanediol, accelerator, tetramethyldecynediol, benzotriazole derivatives, DL-hydroxysuccinic acid according to the mass ratio and DI water; at room temperature, add the above-mentioned raw materials into the stirring tank, start the stirring, the rotation speed is 200r / min, and the time is 45min. Agent, cleaning agent pH value (stock solution, 25 ° C) = 7.50.

...

Embodiment 2

[0065] A neutral semi-water-based cleaning agent for printed board assemblies of high-performance electronic products, its composition and weight percentage are:

[0066] Dipropylene glycol methyl ether acetate 40%, 1,2-hexanediol 20%, accelerator 12%, dimethyloctynediol 6%, benzotriazole derivatives 0.5%, 2,3-dihydroxy Succinic acid 1.5%, DI water balance.

[0067] The preparation method steps of the above-mentioned high-performance electronic product printed board assembly neutral semi-water-based cleaning agent are as follows:

[0068] Weigh dipropylene glycol methyl ether acetate, 1,2-hexanediol, accelerator, dimethyloctynediol, benzotriazole derivatives, 2,3-dihydroxysuccinic acid and DI water; at room temperature, add the above-mentioned raw materials into the stirring tank, start the stirring, the speed is 200r / min, and the time is 45min. After mixing evenly, a neutral semi-water-based cleaning agent for printed board assemblies of high-performance electronic products ...

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Abstract

The invention discloses a neutral semi-water-based cleaning agent for a high-performance electronic product printed board assembly piece. The neutral semi-water-based cleaning agent comprises the following raw material components in parts by weight: 30-50 parts of a diol ether ester solvent, 15-35 parts of aliphatic diol, 5-15 parts of an accelerant, 3-10 parts of an alkynediol active agent, 0.05-1 part of a benzotriazole derivative, 0.5-3 parts of hydroxycarboxylic acid and the balance of DI water. According to the invention, the cleaning agent is a uniform transparent liquid, is a neutral product (pH is 7.50 + / -0.50), and has characteristics of excellent high-temperature and low-temperature stability, no flash point exists, safe use, transportation and storage, no foam and easy rinsing.

Description

technical field [0001] The invention belongs to the technical fields of radio electronics and telecommunication, in particular to a neutral semi-water-based cleaning agent for high-performance printed board assemblies of electronic products and its preparation method and application. Background technique [0002] In recent years, with the rapid development and wide application of integrated circuits, the volume of electronic equipment has become smaller and smaller, and the density of circuit wiring has become higher and higher. Electronic products are rapidly developing toward miniaturization, high integration, high precision, and high reliability requirements, which put forward higher requirements for the cleaning of printed boards and components. [0003] For circuit boards and precision components in the fields of military industry, aerospace, automotive electronics, instrumentation, etc., whether they are surface-mounted or through-hole printed boards, after reflow sold...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D7/26C11D7/32C11D7/50C11D7/60H05K3/26
CPCC11D7/261C11D7/262C11D7/266C11D7/3263C11D7/3281C11D7/265C11D7/5022H05K3/26C11D2111/22
Inventor 崔岩冯侠高超李闯
Owner 华阳新兴科技(天津)集团有限公司
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