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Scaling powder special modified rosin and preparation method thereof

A modified rosin and flux technology, applied in welding equipment, welding medium, manufacturing tools, etc., can solve the problems affecting the quality of electronic products, whitening, easy to corrode the base material, etc., to increase the softening point and improve the cleaning of metal , easy to remove effect

Active Publication Date: 2015-04-22
GUANGXI ZHONGCHANG RESIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a modified rosin specially used for soldering flux and a preparation method thereof. The modified rosin specially used for soldering flux is introduced into the soldering flux, which can solve the problem that the existing soldering flux is easy to corrode the base material, and whitening occurs, which affects electronic products in the later stage. quality problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1——preparation of 95.6 kg of special modified rosin for soldering flux:

[0027] Raw materials and dosage:

[0028] Rosin 90.4 kg,

[0029] Acrylic 4 kg,

[0030] Fumaric acid 1 kg,

[0031] Alkylphenol disulfide oligomer 0.1 kg,

[0032] Tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid]pentaerythritol ester 0.1 kg,

[0033] The preparation steps are:

[0034] (1) Rosin, acrylic acid, fumaric acid, alkylphenol disulfide oligomer antioxidant and tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid] The weight of the pentaerythritol ester auxiliary agent is weighed according to the above-mentioned ratio, and it is for subsequent use;

[0035] (2) Take 90.4 kg of rosin and add it to the reaction kettle, install a direct-current condenser, thermometer and agitator, pass in nitrogen, raise the temperature, and melt the rosin. The temperature is 180°C, start stirring, and slowly add 1 kg of rich For malic acid, heat up again, control the ...

Embodiment 2

[0038] Embodiment 2——preparation of 100 kilograms of special modified rosin for soldering flux:

[0039] Raw materials and dosage:

[0040] Rosin 92.6 kg,

[0041] Acrylic 5 kg,

[0042] Fumaric acid 2 kg,

[0043] Alkylphenol disulfide oligomer 0.2 kg,

[0044] Tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]pentaerythritol ester 0.2 kg

[0045] The preparation steps are:

[0046] (1) Separately mix rosin, acrylic acid, fumaric acid, alkylphenol disulfide oligomer and tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid]pentaerythritol ester The weight is weighed according to the above ratio, and it is set aside;

[0047] (2) Take 92.6 kg of rosin and add it to the reaction kettle, install a direct-flow condenser, a thermometer and a stirrer, pass in nitrogen, raise the temperature, and melt the rosin. The temperature is 180°C, start stirring, and slowly add step 2 kg of rich For malic acid, heat up again, control the temperature at 200°C, and react at...

Embodiment 3

[0050] Embodiment 3——preparation of 104.4 kg of special modified rosin for soldering flux:

[0051] Raw materials and dosage:

[0052] Rosin 94.8 kg,

[0053] Acrylic 6 kg,

[0054] Fumaric acid 3 kg,

[0055] Alkylphenol disulfide oligomer 0.3 kg,

[0056]Tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid]pentaerythritol ester 0.3 kg,

[0057] The preparation steps are:

[0058] (1) Weigh the weights of rosin, acrylic acid, fumaric acid, antioxidant and tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol according to the above ratio ,spare;

[0059] (2) Take 95.8 kg of rosin and add it to the reaction kettle, install a direct-current condenser, a thermometer and a stirrer, pass in nitrogen, raise the temperature, melt the rosin, and start stirring at a temperature of 180°C, slowly add the 3 kg of rich For malic acid, heat up again, control the temperature at 200°C, and react at this temperature for 60 minutes;

[0060] (3) After the re...

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Abstract

The invention discloses scaling powder special modified rosin and a preparation method thereof. The scaling powder special modified rosin is made through compound, by weight, rosin 90.4%-94.8%, acrylic acid 4%-6%, fumaric acid 1%-3%, antioxidant 0.1%-0.3% and additive polonium (PO) 0.1%-0.3%. The preparation method of the scaling powder special modified rosin includes adding the rosin into a reaction still for reaction, slowly adding the fumaric acid, adding the antioxidant and the acrylic acid after the reaction is finished, sampling and detecting an acid value, cooling when the acid value is qualified, adding the additive, evenly mixing and then cooling, packaging and then obtaining the rosin. The scaling powder obtained made from the modified rosin has the advantages of not corroding base materials, so under a welding temperature, fluidity of welding flux is increased, an oxidation film on the surface of metal is eliminated, and soldering flux residues are easy to clean. Meanwhile, poisonous gas and foul smell can not be generated, and human bodies can not be damaged, and environment can not be polluted.

Description

technical field [0001] The invention relates to a modified rosin for flux and a preparation method thereof. Background technique [0002] Most of the welding of electronic industrial products adopts soldering process, which is a fairly traditional welding method for electronic industrial products. In the soldering process of soldering, rosin-type flux and rosin-based solder are indispensable. With the rapid upgrading of electronic industry products, the function of rosin-type flux is not only required to have soldering performance, but It is required to be multifunctional, and only such fluxes and solders can meet the rapid development of the electronics industry. [0003] At present, there are many types of flux, which can be roughly divided into three series: organic, inorganic and resin; resin flux is usually extracted from the secretions of trees, which is a natural product and has no corrosiveness. Rosin is the representative of this type of flux , so it is also calle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/363
Inventor 宣景建黄桂彬林琳
Owner GUANGXI ZHONGCHANG RESIN
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