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Electrotinning additive and preparation method thereof

An additive and electroplating tin technology, which is applied in the field of electroplating tin additives and its preparation, can solve the problems of high frequency of bath change, poor anti-oxidation effect, fast production of tetravalent tin, etc., to prolong the service life of the bath, reduce surface tension, and resist good oxidation effect

Inactive Publication Date: 2019-04-09
南通赛可特电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional electroplating tin additives have poor anti-oxidation effect, rapid production of tetravalent tin, and high frequency of tank changes, which are not suitable for VCP production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Additives for electroplating tin, consisting of the following raw materials in parts by weight:

[0028] Naphenol ethoxy propoxy adduct 0.2kg;

[0029] Ethyl alcohol ethylene oxide adduct 0.2kg;

[0030] Naphenol ethoxysulfonic acid 0.1kg;

[0031] Polyethylene glycol 1000-10000 1kg;

[0032] Resorcinol 0.02kg;

[0033] Hydroxypropanesulfonic acid polymer 0.02kg.

[0034] The preparation method of electroplating tin additive, concrete steps are:

[0035] 1.1 Add about 350L of pure water and start the equipment to stir;

[0036] 1.2 Add the specified amount of polyethylene glycol 1000-10000 and stir until completely dissolved;

[0037] 1.3 Add the specified amount of naphthalene ethoxy propoxy adduct and stir evenly;

[0038] 1.4 Add the specified amount of ethyl alcohol ethylene oxide adduct and stir evenly;

[0039] 1.5 Add the specified amount of naphthalene ethoxysulfonic acid and stir evenly;

[0040] 1.6 Add the specified amount of resorcinol and stir even...

Embodiment 2

[0043] Additives for electroplating tin, consisting of the following raw materials in parts by weight:

[0044] Naphenol ethoxy propoxy adduct 5kg;

[0045] Ethyl alcohol ethylene oxide adduct 2.8kg;

[0046] Naphenolethoxysulfonic acid 3.2kg;

[0047] Polyethylene glycol 1000-10000 6.5kg;

[0048] Resorcinol 0.5kg;

[0049] Hydroxypropanesulfonic acid polymer 0.5kg.

[0050] The preparation method of electroplating tin additive, concrete steps are:

[0051] 1.1 Add about 350L of pure water and start the equipment to stir;

[0052] 1.2 Add the specified amount of polyethylene glycol 1000-10000 and stir until completely dissolved;

[0053] 1.3 Add the specified amount of naphthalene ethoxy propoxy adduct and stir evenly;

[0054] 1.4 Add the specified amount of ethyl alcohol ethylene oxide adduct and stir evenly;

[0055] 1.5 Add the specified amount of naphthalene ethoxysulfonic acid and stir evenly;

[0056] 1.6 Add the specified amount of resorcinol and stir evenly;...

Embodiment 3

[0059] Additives for electroplating tin, consisting of the following raw materials in parts by weight:

[0060] Naphenol ethoxy propoxy adduct 0.2kg;

[0061] Ethyl alcohol ethylene oxide adduct 2.8kg;

[0062] Naphenolethoxysulfonic acid 3.2kg;

[0063] Polyethylene glycol 1000-10000 6.5kg;

[0064] Resorcinol 0.5kg;

[0065] Hydroxypropanesulfonic acid polymer 0.5kg.

[0066] The preparation method of electroplating tin additive, concrete steps are:

[0067] 1.1 Add about 350L of pure water and start the equipment to stir;

[0068] 1.2 Add the specified amount of polyethylene glycol 1000-10000 and stir until completely dissolved;

[0069] 1.3 Add the specified amount of naphthalene ethoxy propoxy adduct and stir evenly;

[0070] 1.4 Add the specified amount of ethyl alcohol ethylene oxide adduct and stir evenly;

[0071] 1.5 Add the specified amount of naphthalene ethoxysulfonic acid and stir evenly;

[0072] 1.6 Add the specified amount of resorcinol and stir evenl...

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Abstract

The invention discloses an electrotinning additive. The electrotinning additive consists of the following raw materials in parts by weight of 0.2-5kg of naphthol ethoxy propoxy addition compounds, 0.2-2.8kg of ethyl alcohol ethylene oxide addition compounds, 0.1-3.2kg of naphthol ethoxy sulfonic acid, 1-6.5kg of polyethylene glycol 1000-10000, 0.02-0.5kg of resorcinol and 0.02-0.5kg of hydroxyl propanesulfonic acid polymers. The preparation method of the electrotinning additive comprises the specific steps of 1.1, adding about 350L of pure water, and switching on equipment for stirring; 1.2, adding a specified amount of the polyethylene glycol 1000-10000, and performing stirring until the polyethylene glycol 1000-10000 completely dissolves; 1.3 adding a specified quantity of the naphthol ethoxy propoxy addition compounds, and performing uniform stirring; 1.4 adding a specified quantity of the ethyl alcohol ethylene oxide addition compounds, and performing uniform stirring; 1.5 adding aspecified amount of the naphthol ethoxy sulfonic acid, and performing uniform stirring; 1.6 adding a specified amount of the resorcinol, and performing uniform stirring; and 1.7 adding a specified quantity of the hydroxyl propanesulfonic acid polymers, and performing uniform stirring. The electrotinning additive disclosed by the invention is good in oxidation resistance effects, the generation oftetravalent tin can be impeded, the life of tank liquor is prolonged, and the electrotinning additive is suitable for VCP production.

Description

technical field [0001] The invention relates to an electroplating tin additive and a preparation method thereof. Background technique [0002] Printed Circuit Board (PCB) is one of the important components of the electronics industry and is the support of electronic components. Generally, the process of manufacturing printed circuit boards includes double-sided copper cladding → mechanical processing → copper sinking → film (screen printing) → electroplating copper → electroplating tin → etching → stripping tin → processing. Oxidation treatment in the printed circuit board can ensure that the copper surface does not change color. However, traditional electroplating tin additives have poor anti-oxidation effect, rapid production of tetravalent tin, and high frequency of tank changes, so they are not suitable for VCP production. Contents of the invention [0003] Purpose of the invention: The purpose of the present invention is to solve the deficiencies in the prior art, p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/32
CPCC25D3/32
Inventor 刘政刘波隋广宇
Owner 南通赛可特电子有限公司
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