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Method for preparing paint remover suitable for epoxy group printed circuit board

A technology of printed circuit board and paint remover, applied in the direction of chemical paint/ink remover, coating, etc., can solve the problems of difficult application in the electronic field, loss of protection, application limitation, etc., to shorten the time required for paint removal , Increase the removal time, the effect of flexible paint removal method

Inactive Publication Date: 2013-02-27
NO 771 INST OF NO 9 RES INST CHINA AEROSPACE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The burning method will cause great damage to the substrate and is difficult to apply in the electronic field; manual or mechanical methods are labor-intensive and inefficient when removing paint, and are easy to cause damage to the printed circuit board itself; chemical solvent methods, such as acetone dissolution method It can remove the varnish on the surface of epoxy glue printed circuit boards and tin-lead alloy pads. In the document "Experimental Research on Composite Heat Pipe Radiators for Electronic Devices", acetone is mainly used as a good cooling agent, which is to make full use of acetone It has the characteristics of fast volatilization and good flow, but it is volatile and easy to flow, but it needs to be soaked for a long time when removing paint, resulting in low paint removal efficiency and poor effect; laser paint removal is greatly restricted by equipment , the application is greatly restricted
[0003] During use, the paint film will crack and peel after being subjected to some corrosive media and mechanical damage, and then lose its protective effect.

Method used

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  • Method for preparing paint remover suitable for epoxy group printed circuit board
  • Method for preparing paint remover suitable for epoxy group printed circuit board
  • Method for preparing paint remover suitable for epoxy group printed circuit board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The preparation method of paint remover suitable for epoxy-based printed circuit boards includes the following steps:

[0035] 1) Use the extraction method to mix the TQJ101 enameled wire paint remover produced by Wantong Electronics, weigh 10g, put it into the separatory funnel, add 2 to 3 times the volume of deionized water, and remove from the lower part of the separatory funnel. After the extraction of the paint remover and deionized water solution, pour out the residual deionized water, repeat the extraction several times, and measure the pH value of the residual deionized water with a pH test paper each time. When the pH value reaches 4, remove the paint Adjust the pH of the agent in place, this operation can reduce the acidity in the original paint remover;

[0036] 2) Add 1.6g~1.8g of methamphetamine to the adjusted paint remover, which is a corrosion inhibitor for solder materials, which can reduce the corrosion of metal materials by solvents;

[0037] 3) After stirr...

Embodiment 2

[0040] The preparation method of paint remover suitable for epoxy-based printed circuit boards includes the following steps:

[0041] 1) Use the extraction method to mix the TQJ101 enameled wire paint remover produced by Wantong Electronics, weigh 10g, put it into the separatory funnel, add 2 to 3 times the volume of deionized water, and remove from the lower part of the separatory funnel. After the extraction of the paint remover and deionized water solution, pour out the residual deionized water, repeat the extraction several times, and measure the pH value of the residual deionized water with a pH test paper each time. When the pH value reaches 4.2, remove the paint Adjust the pH of the agent in place, this operation can reduce the acidity in the original paint remover;

[0042] 2) Add 1.8g to 2g of methamphetamine to the adjusted paint remover, which is a corrosion inhibitor for solder materials, which can reduce the corrosion of metal materials by solvents;

[0043] 3) After st...

Embodiment 3

[0046] The preparation method of paint remover suitable for epoxy-based printed circuit boards includes the following steps:

[0047] 1) Use the extraction method to mix the TQJ101 enameled wire paint remover produced by Wantong Electronics, weigh 10g, put it into the separatory funnel, add 2 to 3 times the volume of deionized water, and remove from the lower part of the separatory funnel. After the extraction of the paint remover and deionized water solution, pour out the residual deionized water, repeat the extraction several times, and measure the pH value of the residual deionized water with a pH test paper each time. When the pH value reaches 4, remove the paint Adjust the pH of the agent in place, this operation can reduce the acidity in the original paint remover;

[0048] 2) Add 1g~1.2g of methamphetamine to the adjusted paint remover, which is a corrosion inhibitor for solder materials, which can reduce the corrosion of metal materials by solvents;

[0049] 3) After stirrin...

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PUM

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Abstract

The invention discloses a method for preparing a paint remover suitable for an epoxy group printed circuit board. The paint remover is extracted for a plurality of times through deionized water, and after separation, the paint remover is collected; a soldering tin material corrosion inhibitor is added into the paint remover to be uniformly mixed; then, a devolatilizer is added to be uniformly mixed; and a multiple thicker is added to be uniformly mixed, so that the paint remover suitable for the epoxy group printed circuit board is obtained. By the method, the paint of the epoxy group printed circuit board can be removed within a short time, the improved paint remover is used for swelling, a paint film surface is softened and wrinkled, so that obvious wrinkling and falling phenomena can be observed, a paint removing effect can be realized within a shorter time, time for removing the paint is shortened, and the production efficiency is increased.

Description

Technical field [0001] The invention belongs to the technical field of paint removers and relates to a method for preparing paint removers suitable for epoxy-based printed circuit boards. Background technique [0002] At present, the paint removal methods mainly include: combustion method, mechanical method, chemical solvent method and laser method, and traditional methods have different degrees of defects and deficiencies in preparation or use. The burning method damages the substrate greatly and is difficult to be applied in the electronic field; manual or mechanical methods are labor-intensive, low in efficiency, and easy to damage the printed circuit board itself; chemical solvent methods, such as acetone solution method It can remove the varnish on the surface of epoxy resin printed circuit boards and tin-lead alloy pads. In the document "Experimental Research on Composite Heat Pipe Radiators for Electronic Devices", acetone is mainly used as a good heat dissipation agent, w...

Claims

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Application Information

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IPC IPC(8): C09D9/00
Inventor 沙婷董选政陈元章
Owner NO 771 INST OF NO 9 RES INST CHINA AEROSPACE SCI & TECH
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