Corrosion-resistant stable soldering flux

A flux and corrosion-resistant technology, applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problems of poor corrosion resistance, poor stability, poor wettability, and difficult cleaning of the welding layer, and achieve good fluxing The effect of activity, good film-forming property and excellent expansion performance

Inactive Publication Date: 2018-07-20
TIANCHANG FEILONG BRAND STEEL GRID
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the flux in the prior art generally has poor quality, poor wettability, low solderability, poor corrosion resistance and stability of the solder layer, many residues after welding, and difficult cleaning.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A corrosion-resistant and stable flux, its raw materials include by weight: 25 parts of rosin polybasic acid, 15 parts of phytic acid, 3 parts of lactic acid, 5 parts of citric acid, 2 parts of itaconic acid, 2 parts of triethylamine, polyethylene 10 parts of diol, 2 parts of rosin amine, 0.5 part of o-diazonaphthoquinone-5-sulfonyl abietamine, 1.2 parts of aniline hydrochloride, 0.5 part of octylphenol polyoxyethylene ether, 1.5 parts of sodium dodecylsulfonate , 0.2 parts of aluminum chloride, 1 part of catechol, and 200 parts of solvent.

Embodiment 2

[0015] A corrosion-resistant and stable flux, the raw materials of which include by weight: 35 parts of hydrogenated rosin, 10 parts of phytic acid, 8 parts of lactic acid, 2 parts of citric acid, 4 parts of itaconic acid, 1 part of triethylamine, polyethylene glycol 15 parts of alcohol, 1 part of rosin amine, 1 part of o-diazonaphthoquinone-5-sulfonyl abietamine, 0.8 part of aniline hydrochloride, 1.5 parts of octylphenol polyoxyethylene ether, 0.8 part of sodium dodecylsulfonate, 0.5 parts of aluminum chloride, 0.5 parts of catechol, 200-300 parts of solvent; among them, the solvent is composed of glycerol, ethanol, diethylene glycol monohexyl ether, ethanol and water in a weight ratio of 1:4:15:40 .

Embodiment 3

[0017] A corrosion-resistant and stable flux, the raw materials of which include by weight: 30 parts of disproportionated rosin, 14 parts of phytic acid, 5 parts of lactic acid, 4 parts of citric acid, 2.5 parts of itaconic acid, 1.8 parts of triethylamine, polyethylene glycol 12 parts of alcohol, 1.8 parts of rosin amine, 0.6 part of o-diazonaphthoquinone-5-sulfonyl abietamine, 1.2 parts of aniline hydrochloride, 0.8 part of octylphenol polyoxyethylene ether, 1.2 parts of sodium dodecylsulfonate, 0.3 parts of aluminum chloride, 0.8 parts of catechol, and 250 parts of solvent; wherein, the solvent is composed of glycerol, ethanol, diethylene glycol monohexyl ether, ethanol and water in a weight ratio of 3:2:5:70.

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PUM

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Abstract

The invention discloses corrosion-resistant stable soldering flux. Raw materials of the corrosion-resistant stable soldering flux comprise, by weight, 25-35 parts of modified rosin, 10-15 parts of phytic acid, 3-8 parts of lactic acid, 2-5 parts of citric acid, 2-4 parts of itaconic acid, 1-2 parts of triethylamine, 10-15 parts of polyethylene glycol, 1-2 parts of rosin amine, 0.5-1 part of O-diazonaphthoquinone-5-sulfonyl rosin amine, 0.8-1.2 parts of aniline hydrochloride, 0.5-1.5 parts of octaphenyl polyoxyethyiene, 0.8-1.5 parts of sodium dodecyl sulfonate, 0.2-0.5 part of aluminum chloride, 0.5-1 part of catechol and 200-300 parts of a solvent. The corrosion-resistant stable soldering flux has good welding aiding activity, and effectively prevents oxygen and the like from entering themetal surface, and therefore the corrosion resistant performance and the stability of the soldering flux are improved.

Description

technical field [0001] The invention relates to the technical field of flux, in particular to a corrosion-resistant and stable flux. Background technique [0002] 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 flux has good solderability and low cost, it has high residue after soldering. With the rapid development and demand of electronic surface assembly technology, the requirements for the stability and corrosion resistance of flux are increasing. However, the soldering flux in the prior art is generally poor in quality, poor in wettability, low in solderability, poor in corrosion resistance and stability of the solder layer, has many residues after soldering, and is difficult to clean. Contents of the invention [0003] The invention provides a corrosion-resistant and stable flux, which has good flux activ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/362B23K35/363
CPCB23K35/362B23K35/3612
Inventor 孙长志
Owner TIANCHANG FEILONG BRAND STEEL GRID
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