Processing technology of circuit board with super-high corrosion resistance

A technology of corrosion resistance and processing technology, applied in the processing technology field of circuit boards, can solve problems such as failure of electronic equipment, and achieve the effects of improving oxidation resistance, improving acid and alkali corrosion resistance, and reducing production costs.

Active Publication Date: 2018-11-23
CHANGZHOU AOHONG ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Electronic equipment may fail due to corrosion effects when it is exposed to moisture or other harsh weather conditions. The failure of the circuit board is one of th...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A processing technology of a circuit board with super corrosion resistance, comprising the following steps:

[0021] S1, pre-treatment of solder resist: pre-treatment of solder resist includes pickling, grinding, sandblasting and micro-etching; the pickling is used to remove oxides on the surface of the copper plate; The surface is polished; the sand blasting is to use 280# corundum to wash the copper surface under high pressure; the microetching treatment is to use hydrogen peroxide to roughen the microetch to carry out the secondary roughening of the copper surface; the secondary roughening in step S1 The tempering temperature is controlled at 60-70°C, and the hydrogen peroxide roughening microetch agent used in the secondary roughening is faster and better in microetch at a higher temperature; it has significant advantages over traditional room temperature microetch.

[0022] Compared with the traditional solder resist pretreatment process, the solder resist pretreat...

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PUM

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Abstract

The invention relates to processing technology of a circuit board with super-high corrosion resistance. The processing technology comprises the following steps that S1, the solder resist pretreatmentis adjusted, the board surface roughness is increased, and the binding force of the board surface and ink is enhanced; S2, ink formula is upgraded, the ink with the super-high corrosion resistance isused, and it is realized that the circuit board has the super-high corrosion resistance; and S3, a potion with corrosion slow and oxidation resistance is chosen, after the board is subjected to solderresist, the board can pass through the copper surface covered by the ink, and when the board reaches an oxidation resistance line, the potion with corrosion slow and oxidation resistance is chosen toensure the corrosion resistance of the copper surface. The processing technology can enable the circuit board to have the super-high corrosion resistance, the service life of a main board is prolonged, and the performance stability of the main board is ensured.

Description

technical field [0001] The invention relates to a PCB processing technology, in particular to a processing technology of a circuit board with super corrosion resistance. Background technique [0002] Electronic equipment may fail due to corrosion effects when it is exposed to moisture or in other harsh weather environments. The failure of circuit boards is one of the key factors for equipment failure. The material of circuit boards is damaged and deteriorated due to corrosion, resulting in premature failure of electronic equipment. [0003] The factors affecting the corrosion of electronic equipment circuit boards include atmospheric corrosion, corrosion of various chemicals during processing, corrosion during use, and other corrosion. In order to delay various corrosions, it is necessary to improve the production process and raw materials. Contents of the invention [0004] In order to solve the above technical problems and provide a processing technology that can signifi...

Claims

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Application Information

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IPC IPC(8): H05K3/28H05K3/38
CPCH05K3/282H05K3/382
Inventor 张阳
Owner CHANGZHOU AOHONG ELECTRONICS
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