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Water-base scaling powder and preparation method and application thereof

A flux, water-based technology, used in welding equipment, welding media, manufacturing tools, etc., can solve problems such as unsafe operability and fried tin, and achieve the effects of no harm to the human body, low smoke, and strong wetting performance.

Active Publication Date: 2017-03-15
SHENZHEN UNIBRIGHT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the current disclosure of another water-based flux that can reduce the discharge of welding pollutants, the compound solvent used is ethanol and isopropanol, accounting for 25-30% by weight, which is also flammable and explosive. safe operability
[0005] At present, the reason why the water-based flux uses a high content of organic solvents is that in the wave soldering process, the basic solvent of the water-based flux cannot be completely volatilized in time in the preheating section, which may easily cause tin frying.
Therefore, how to reduce the content of the organic solvent components of the existing water-based flux, especially the toxic and harmful organic solvents, and avoid the phenomenon of tin frying in the existing water-based flux is a technical problem that those skilled in the art always hope to solve

Method used

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  • Water-base scaling powder and preparation method and application thereof
  • Water-base scaling powder and preparation method and application thereof
  • Water-base scaling powder and preparation method and application thereof

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preparation example Construction

[0030] On the other hand, the embodiment of the present invention also provides a preparation method of the above-mentioned water-based flux. Described preparation method comprises the steps:

[0031] Step S01: Measure the raw materials of each component according to the components and content ratios contained in the water-based flux mentioned above;

[0032] Step S02: after dissolving the measured water-soluble rosin resin component raw material in the measured organic solvent component raw material, adding deionized water for mixing treatment to prepare a first mixed solution;

[0033] Step S03: mixing the measured organic acid component raw materials with the first mixed solution to prepare a second mixed solution;

[0034] Step S04: Mixing the measured compounded surfactant and other additives with the second mixed solution.

[0035] Specifically, the components and content ratios of the water-based flux described in the above step S01 are the same as those described abo...

Embodiment 1

[0041] This embodiment provides a water-based flux, which consists of the following components in mass percent:

[0042]

[0043] The preparation method of this water-based soldering flux comprises the steps:

[0044] S11: Mix propylene glycol butyl ether and dipropylene glycol methyl ether evenly, add rosin glyceride into the mixed solvent, stir at high speed until completely dissolved, then add deionized water, stir and mix evenly;

[0045] S12: Add maleic acid, succinic acid, and citric acid into step S11 one by one, and stir until completely dissolved;

[0046] S13: Mix ammonium perfluorooctanoate and dodecyl dimethyl betaine evenly, then add to step S12, and stir until completely dissolved.

[0047] S14: Add additives benzotriazole and hydroxypropyl chitosan one by one to step S13, stir until completely dissolved to obtain the product.

Embodiment 2

[0049] This embodiment provides a water-based flux, which consists of the following components in mass percent:

[0050]

[0051]

[0052] The preparation method of this water-based soldering flux comprises the steps:

[0053] S21: Mix dipropylene glycol butyl ether and tripropylene glycol methyl ether evenly, add rosin pentaerythritol ester into the mixed solvent, stir at high speed until completely dissolved, then add deionized water, stir and mix evenly;

[0054] S22: Add maleic acid, succinic acid, and citric acid into step S21 one by one, and stir until completely dissolved;

[0055] S23: Mix perfluorononanoic acid ammonium and dodecyl dihydroxyethyl betaine evenly, then add to step S22, and stir until completely dissolved.

[0056] S24: adding the additives benzotriazepine and hydroxypropyl chitosan into step S23 one by one, stirring until completely dissolved to obtain the product.

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Abstract

The invention discloses water-base scaling powder and a preparation method and application thereof. The water-base scaling powder is prepared from, by mass, 2.0-4.% of water-soluble rosin resin, 4.5-7.0% of formulated organic acid, 0.1-0.4% of formulated surfactant, 4-8% of organic solvent, 0.1-0.3% of other additives and the balance deionized water. On one hand, the water-base scaling powder is completely suitable for a wave-soldering welding technology, and has the advantages that the weldability is high, the tin penetration property is excellent, postwelding residues are few on the plate surface, the surface insulation resistance is extremely high and the water-base scaling powder is easy to clean; on the other hand, the water-base scaling powder is mild in smell, and in the welding process, the scaling powder is low in smog, high in wettability, free of flashing point and safe to use, and the affinity of the scaling powder is good for water. The preparation method is environmentally friendly and safe, harmless to human body and free of flashing point, the technological conditions are easy to control, and the properties of the prepared water-base scaling powder are stable.

Description

technical field [0001] The invention belongs to the technical field of flux, and in particular relates to a water-based flux and its preparation method and application. Background technique [0002] With the continuous development of the electronics industry, the continuous upgrading of electronic products and the continuous upgrading of environmental protection regulations, the market's requirements for flux are also increasing. The development of flux has changed from traditional rosin flux to synthetic flux that appeared in the 1980s. Soldering flux, no-clean flux, water-soluble flux, and now lead-free and halogen-free flux, etc. All these types of fluxes are based on alcohol solvents, adding various types of auxiliary materials, such as film-forming agents, activators, high-boiling solvents, surfactants, resists, etc., to achieve application Applicability of various processes. All these types of fluxes have one thing in common: alcohol solvents are used as the base sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/36B23K35/362
CPCB23K35/3613B23K35/362
Inventor 郭艳萍季桃仙
Owner SHENZHEN UNIBRIGHT TECH
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