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A kind of circuit board acid cleaning agent and preparation method thereof

An acid cleaning agent and circuit board technology, which is applied in the preparation of detergent mixture compositions, surface active detergent compositions, detergent compounding agents, etc., can solve problems such as metal corrosion, and achieve enhanced corrosion resistance and improved uniformity. degree and uniformity of film formation

Active Publication Date: 2020-08-11
GUANGDONG LEAR ELECTROCHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is the problem of metal corrosion during the cleaning process of circuit boards, and an acidic cleaning agent for circuit boards and its preparation method are provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] An acid cleaning agent for circuit boards, comprising 4 parts by mass of sodium laureth sulfate, 6 parts by mass of coconut oil diethanolamide, 2 parts by mass of citric acid, 2 parts by mass of corrosion inhibitor, 7 parts by mass of dispersant NNO, silicone oil Foaming agent 0.08 mass parts, deionized water 90 mass parts. The corrosion inhibitor is a composite corrosion inhibitor. The composite corrosion inhibitor includes 85 parts by mass of corrosion inhibitor and 7 parts by mass of modifier; the corrosion inhibitor includes 12 parts by mass of silane coupling agent, 10 parts by mass of propylene glycol, 0.6 parts by mass of polyvinyl alcohol, ethanol 11 parts by mass, 55 parts by mass of deionized water; the propylene glycol, polyvinyl alcohol, ethanol, and deionized water were mixed and heated to 70°C, and after stirring for 40 minutes, a silane coupling agent was added and stirred for 2 hours; The modifier includes 8 parts by mass of nano-nickel oxide, 2 parts b...

Embodiment 2

[0030] Embodiment 2 differs from Example 1 in that it includes 2 parts by mass of sodium laureth sulfate, 1 part by mass of coconut oil diethanolamide, 1 part by mass of citric acid, 1 part by mass of corrosion inhibitor, and the quality of dispersant NNO6 parts, 0.05 parts by mass of silicone oil defoamer, and 80 parts by mass of deionized water.

Embodiment 3

[0032] Example 3 Example 1 is different in that it includes 8 parts by mass of sodium laureth sulfate, 10 parts by mass of coconut oil diethanolamide, 6 parts by mass of citric acid, 3 parts by mass of corrosion inhibitor, and 8 parts by mass of dispersant NNO , 0.2 parts by mass of silicone oil defoamer, and 100 parts by mass of deionized water.

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PUM

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Abstract

The invention relates to the field of circuit board cleaning, and provides an acidic circuit board cleaning agent and a preparation method thereof to solve the problem of metal corrosion during the circuit board cleaning process. The invention provides an acid cleaning agent for circuit boards and a preparation method thereof, including 2 to 8 parts by mass of sodium laureth sulfate, 1 to 10 parts by mass of coconut oil diethanolamide, 1 to 6 parts by mass of citric acid, and buffer 1~3 parts by mass of etching agent, 6~8 parts by mass of dispersant NNO, 0.05~0.2 parts by mass of silicone oil defoaming agent, and 80~100 parts by mass of deionized water. The cleaning agent can effectively clean the surface of the circuit board without corroding the metal on the surface of the circuit board.

Description

technical field [0001] The invention relates to the field of circuit board cleaning, in particular to an acidic cleaning agent for circuit boards and a preparation method thereof. Background technique [0002] In recent years, major changes have taken place in the field of electronic assembly technology, such as miniaturization of components, component mounting and high density of structures, etc. At the same time, the improvement of solder paste formula has made it easier to clean the residual flux on the circuit board. It is getting more and more difficult. [0003] Traditional solvent-based cleaning agents have been gradually phased out due to the existence of certain fire safety hazards and the great damage to the environment and human body. At present, the popular water-based cleaning agents for circuit boards on the market are mainly strong alkaline cleaning agents. This type of cleaning agent has a strong decontamination ability, but it does great damage to the mater...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11D1/83C11D3/37C11D3/34C11D3/20C11D3/16C11D3/12C11D3/14C11D3/60C23F11/04
CPCC11D1/83C11D3/1213C11D3/124C11D3/14C11D3/162C11D3/201C11D3/2044C11D3/2086C11D3/3418C11D3/3707C23F11/04C11D1/008C11D1/29C11D1/66C11D2111/22
Inventor 张波陈广朱明
Owner GUANGDONG LEAR ELECTROCHEM LTD
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