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Scaling flux for soldering

A flux and soldering technology, applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problems of poor electrical insulation performance, insufficient welding activity, cleaning, etc., and achieve high surface insulation resistance, Good solderability and high cleanliness effect

Active Publication Date: 2015-03-11
SHENZHEN MAKER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to solve the problems of current halogen-containing fluxes that need to be cleaned after soldering and poor electrical insulation performance, as well as the problems of insufficient soldering activity of organic acid activators and increased solid content resulting in many residues after soldering. A soldering flux with good solderability, low solids content, no halogen, no corrosion, high surface insulation resistance, and high cleanliness

Method used

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  • Scaling flux for soldering
  • Scaling flux for soldering

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1, a kind of soldering flux, is made of the following raw materials in parts by weight:

[0045] Element

parts by weight

Isopropanol

98

Organic solvents

Succinic acid

1.5

Organic dicarboxylic acid active agent

Adipic acid

0.2

Organic dicarboxylic acid active agent

Benzaldehyde o-carboxylic acid

0.2

Organic aldehyde acid compound

OP-10

0.1

Surfactant

[0046] Preparation of soldering flux:

[0047] 1. Weigh the raw materials according to the parts by weight of the above raw materials, add the organic solvent and the solubilizing wetting agent into the stirring vessel, and then add the paste or solid organic carboxylic acid active agent and organic aldehyde acid in order according to the parts by weight. compounds and surfactants.

[0048] 2. Stir the above raw materials for 20-40 minutes at a temperature of 20-60°C, so that the pasty or solid raw materials ...

Embodiment 2

[0051] Embodiment 2, a kind of soldering flux, is made of the following raw materials in parts by weight:

[0052]

[0053] The preparation method of the soldering flux of this embodiment is the same as that of Embodiment 1, and will not be repeated here.

Embodiment 3

[0054] Embodiment 3, a kind of soldering flux, is made of the following raw materials in parts by weight:

[0055] Element

[0056] glutaric acid

[0057] The preparation method of the soldering flux of this embodiment is the same as that of Embodiment 1, and will not be repeated here.

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Abstract

The invention discloses a scaling flux for soldering which is made of, by weight, 81-98 parts of organic solvent, 0.2-10 parts of carboxylic acid active agent, 0.1-10 surface active agent and 0.1-2.0 organic carboxylic acid compound; the boiling point of the organic carboxylic acid compound is 100-280 DEG C, and the melting point of the organic carboxylic acid compound is 150-400 DEG C. The scaling flux for soldering has the advantages of being high in weldability, low in solid content, halogen-free, corrosion-free, high in surface insulation resistance and high in cleanliness.

Description

technical field [0001] The invention belongs to the field of electronic and electrical welding materials, and relates to a soldering flux used for welding electronic components. Background technique [0002] Welding technology is widely used in the electronics industry. In the manufacturing process of electronic products, almost all kinds of welding methods are used. The commonly used welding is mostly soldering, and in soldering, the most commonly used and most effective The representative one is soldering. Soldering is to heat the electronic weldment and the solder with a lower melting point than the weldment to the soldering temperature. When the weldment does not melt, the solder melts and infiltrates the soldering surface through the action of the flux, relying on the metal atoms between the two The diffusion between them forms a new alloy composition and completes the connection of the weldment. During the whole welding process, the active agent in the flux plays a v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/363
Inventor 吴树文符瑄杜学晓
Owner SHENZHEN MAKER TECH CO LTD
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