Soldering flux cleaning agent of integrated circuit board and preparation method of soldering flux cleaning agent

An integrated circuit and flux technology, applied in the field of cleaning agents, can solve the problems of high cost and low efficiency, and achieve the effects of moderate volatility, cost reduction, and high market promotion prospects.

Inactive Publication Date: 2017-03-08
FOSHAN XUNTUOAO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are still many companies still using the process that belongs to the aforementioned process of using rosin tree finger-based flux solder and then cleaning it with cleaning agent, which has low efficiency and high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of flux cleaning agent for integrated circuit board is made up of the following components by weight percentage:

[0031] Diethylene glycol ether: 40%, N-methyl-2-pyrrolidone: 1%,

[0032] 2,4-dichloro-5-trifluoromethylpyrimidine: 0.1%, and the balance is high-purity water.

[0033] The preparation method of above-mentioned integrated circuit board flux cleaning agent, comprises the following steps:

[0034] Add water into the reaction kettle, after heating up to 50°C, add N-methyl-2-pyrrolidone and 2,4-dichloro-5-trifluoromethylpyrimidine according to the weight percentage, stir evenly, and slowly after the temperature drops to 25°C A cleaning agent for integrated circuit boards is prepared by adding a high-boiling-point alcohol ether solvent dropwise.

Embodiment 2

[0036] A kind of flux cleaning agent for integrated circuit board is made up of the following components by weight percentage:

[0037] Diethylene glycol butyl ether: 65%, N-methyl-2-pyrrolidone: 12%,

[0038] 2,4-dichloro-5-trifluoromethylpyrimidine: 5%, the balance is high-purity water.

[0039] The preparation method of above-mentioned integrated circuit board flux cleaning agent, comprises the following steps:

[0040] Add water into the reaction kettle, after heating up to 60°C, add N-methyl-2-pyrrolidone and 2,4-dichloro-5-trifluoromethylpyrimidine according to the weight percentage and stir evenly, after the temperature drops to 30°C, slowly A cleaning agent for integrated circuit boards is prepared by adding a high-boiling-point alcohol ether solvent dropwise.

Embodiment 3

[0042] A kind of flux cleaning agent for integrated circuit board is made up of the following components by weight percentage:

[0043] Dipropylene glycol butyl ether: 50%, N-methyl-2-pyrrolidone: 5%,

[0044] 2,4-dichloro-5-trifluoromethylpyrimidine: 2%, the balance is high-purity water.

[0045] The preparation method of above-mentioned integrated circuit board flux cleaning agent, comprises the following steps:

[0046] Add water into the reaction kettle, after heating up to 50°C, add N-methyl-2-pyrrolidone and 2,4-dichloro-5-trifluoromethylpyrimidine according to the weight percentage, stir evenly, and slowly after the temperature drops to 25°C A cleaning agent for integrated circuit boards is prepared by adding a high-boiling-point alcohol ether solvent dropwise.

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PUM

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Abstract

The invention discloses a soldering flux cleaning agent of an integrated circuit board. The soldering flux cleaning agent is prepared from the following components in percentage by weight: 40 percent to 65 percent of a high-boiling-point alcohol ether solvent, 1 percent to 12 percent of N-methyl-2-pyrrolidinone, 0.1 percent to 5 percent of 2,4-dichloro-5-trifluoromethylpyrimidine and the balance of water. The invention also discloses a preparation method of the soldering flux cleaning agent of the integrated circuit board. The preparation method comprises the following steps: adding the water into a reaction kettle; after raising the temperature to 50 DEG C to 60 DEG C, adding the N-methyl-2-pyrrolidinone and the 2,4-dichloro-5-trifluoromethylpyrimidine according to the weight percent, and uniformly stirring; cooling the temperature to 25 DEG C to 30 DEG C; then slowly dropwise adding the high-boiling-point alcohol ether solvent to prepare the cleaning agent of the integrated circuit board. The cleaning agent disclosed by the invention is neutral, is easy to rinse and does not cause corrosion to the circuit board; the raw materials are environment-friendly and healthy; the cleaning agent is applicable to a rosin resin series soldering flux prepared from rosin, resin, an active agent containing a halide, an additive and an organic solvent, and has a wide applicable range; a cleaning process is simple and convenient, and the cleaning effect is good.

Description

[0001] Technical field: [0002] The invention relates to the technical field of cleaning agents, in particular to an integrated circuit board flux cleaning agent and a preparation method thereof. [0003] Background technique: [0004] In recent decades, in the soldering process of electronic products, rosin resin flux mainly composed of rosin, resin, halide-containing active agent, additive and organic solvent is generally used. Although this type of flux has good solderability and low cost, it has high post-soldering residues. Its residues contain halogen ions, which will gradually cause problems such as electrical insulation performance degradation and short circuits. To solve this problem, the rosin resin-based flux residues on electronic printed boards must be cleaned. This will not only increase the production cost, but also the cleaning agent used to clean the rosin resin-based flux residues is mainly fluorochlorine compounds. This compound is a depleting substance of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D7/26C11D7/32C11D7/60
CPCC11D7/263C11D7/00C11D7/3281
Inventor 付淑珍
Owner FOSHAN XUNTUOAO TECH CO LTD
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