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Cleaning agent for electronics and preparation method thereof

A cleaning agent, electronic technology, applied in the direction of organic non-surface active cleaning composition, etc., can solve the problems of unenvironmental protection, unsatisfactory cleaning effect, uneven quality and so on

Inactive Publication Date: 2013-07-10
SHENZHEN TONGFANG XINYUAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The refinement of product spacing and the improvement of product cleanliness also increase the requirements for post-soldering cleaning; Non-environmentally friendly and highly toxic cleaning agents such as vinyl chloride have been phased out and restricted in use
At present, the quality of cleaning agents for the SMT industry in the market is uneven, and the cleaning effect is not satisfactory.

Method used

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  • Cleaning agent for electronics and preparation method thereof
  • Cleaning agent for electronics and preparation method thereof
  • Cleaning agent for electronics and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] In parts by weight, including: 20 parts of ethanol, 70 parts of hexamethyldisiloxane, and 10 parts of acetone;

[0011] Preparation method: Mix 20 parts of ethanol, 70 parts of hexamethyldisiloxane, and 10 parts of acetone evenly, then add it to a stirring reaction kettle, and stir at 65 °C and 60 R / MIN for 30 minutes. Pressure distillation, collecting components at 50-60°C to obtain cleaning agent.

[0012] 1. Cleaning effect experiment:

[0013] 1. Test equipment: 1 electrostatic brush, 9 computer motherboards, 3 cleaning bottles, and 1 cardboard.

[0014] 2. Test samples: imported solvent cleaners on the market, domestic solvent cleaners on the market, solvent cleaners in Example 1, high rosin flux, low rosin flux, and non-rosin flux.

[0015] 3. Test method: Spray three computer motherboards with high rosin flux, low rosin flux and non-rosin flux in turn, and pass through the tin furnace, respectively numbered 1, 2, 3; 4, 5, 6; 7 , 8, 9;

[0016] Spray three com...

Embodiment 2

[0031] In parts by weight, it includes: 10 parts of ethanol, 10 parts of isopropanol, 50 parts of hexamethyldisiloxane, 20 parts of octamethylcyclotetrasiloxane, 5 parts of acetone, and 5 parts of cyclohexanone;

[0032] Preparation method: Mix 10 parts of ethanol, 10 parts of isopropanol, 50 parts of hexamethyldisiloxane, 20 parts of octamethylcyclotetrasiloxane, 5 parts of acetone and 5 parts of cyclohexanone, and then add to the There is a stirred reactor, and the temperature is 65°C and 60R / MIN stirring reaction for 30 minutes, and the components at 50-60°C are collected through vacuum distillation to obtain a cleaning agent.

[0033] 1. Cleaning effect experiment:

[0034] 1. Test equipment: 1 electrostatic brush, 9 computer motherboards, 3 cleaning bottles, and 1 cardboard.

[0035] 2. Test samples: imported solvent cleaners on the market, domestic solvent cleaners on the market, solvent cleaners in Example 2, high rosin flux, low rosin flux, and non-rosin flux.

[003...

Embodiment 3

[0053] In parts by weight, including: 20 parts of methanol, 40 parts of hexamethylcyclotrisiloxane, 40 parts of acetone;

[0054] Preparation method: Mix 20 parts of methanol, 40 parts of hexamethylcyclotrisiloxane, and 40 parts of acetone evenly, then add to a stirring reaction kettle, stir and react at 65 °C and 60 R / MIN for 30 minutes, and then reduce Pressure distillation, collecting components at 50-60°C to obtain cleaning agent.

[0055] 1. Cleaning effect experiment:

[0056] 1. Test equipment: 1 electrostatic brush, 9 computer motherboards, 3 cleaning bottles, and 1 cardboard.

[0057] 2. Test samples: imported solvent cleaners on the market, domestic solvent cleaners on the market, solvent cleaners in Example 3, high rosin flux, low rosin flux, and non-rosin flux.

[0058] 3. Test method: Spray three computer motherboards with high rosin flux, low rosin flux and non-rosin flux in turn, and pass through the tin furnace, respectively numbered 1, 2, 3; 4, 5, 6; 7 , 8,...

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Abstract

The invention provides a cleaning agent for electronics and a preparation method thereof. The cleaning agent comprises the following ingredients in percentage by weight: 10-40% of low-molecular-weight alcohols, 30-50% of methyl siloxane and 30-40% of low-molecular-weight ketones. According to the cleaning agent provided by the invention, the efficiency of cleaning lead-free soldering residues can be increased, and the requirements for environment friendliness are met, so that the cleaning agent can safely pass through a variety of test applications.

Description

technical field [0001] The invention relates to a cleaning agent and a preparation method thereof, in particular to a cleaning agent for cleaning electronics and a preparation method thereof. Background technique [0002] With the transformation of my country's manufacturing enterprises from labor-intensive to high-tech, in the field of electronic assembly, integrated circuits have changed from simple to complex, PCBA boards are getting smaller and component layouts are getting more and more compact. The refinement of product spacing and the improvement of product cleanliness also increase the requirements for post-soldering cleaning; Unenvironmentally friendly and highly toxic cleaning agents such as vinyl chloride have been phased out and restricted in use. At present, the quality of cleaning agents for the SMT industry on the market varies, and the cleaning effect is not satisfactory. Contents of the invention [0003] The technical problem to be solved by the present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D7/26
Inventor 邱海波肖德成
Owner SHENZHEN TONGFANG XINYUAN TECH CO LTD
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