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High-performance electroplating matte tin additive and preparation method thereof

An additive and high-performance technology, which is applied in the field of electroplating and methanesulfonic acid, can solve the problems of pores, dullness, and uneven thickness of the tin layer, and achieve stability, strong corrosion resistance, and uniform thickness of the tin layer Effect

Pending Publication Date: 2022-07-01
NANJING POLYTECHNIC INSITUTE
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] The purpose of the present invention is to overcome the problems of dull electroplated tin layer, uneven tin layer thickness, pores on the surface, and tin burning in high current areas in the prior art, and provide a white and smooth surface, dense and uniform coating without pores, And has good deep plating ability, prevents tin-burning electroplating matte tin additive

Method used

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  • High-performance electroplating matte tin additive and preparation method thereof

Examples

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Embodiment 1

[0028] Example 1 is a comparative example. The preparation method of electroplating tin additive: weigh 2 parts by weight of polyoxyethylene-polyoxypropylene block polymer L64, 2 parts by weight polyethylene glycol PEG400, 2 parts by weight thiodiglycol ethoxylate HS1000, 5 parts by weight in turn Parts of alkylphenol polyoxyethylene ether NP-10, 1 part by weight of tert-butyl hydroquinone, 1 part by weight of 4-methyl-2-pentanol, 10 parts by weight of isopropanol were added to the Stir at 20-50°C for 0.5h, add deionized water to the required amount, stir evenly, and obtain the electroplating tin additive.

[0029] Examples 2-5 are examples of the electroplating matte tin additive according to the present invention, the preparation method refers to Example 1, and the formula addition amount refers to Table 1.

[0030] Preparation and use method of electroplating mist tin liquid.

[0031] The examples 1-5 were prepared according to the above proportions of the electroplating ...

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Abstract

The invention belongs to the technical field of electroplating foggy tin, and relates to a high-performance electroplating foggy tin additive and a preparation method thereof, and the high-performance electroplating foggy tin additive comprises the following substances by weight: 5-15% of a leveling agent, 3-10% of an anti-scorching agent, 10-15% of a brightener, 1-5% of an antioxidant, 0.5-2% of a flocculant, 1-5% of a dispersant, 5-25% of an organic solvent, and the balance of deionized water. The additive amount of the electroplating solution in a methanesulfonic acid mist tin solution is 10-40 ml / L, an electroplated layer obtained at the temperature of 20-25 DEG C is white, bright and smooth in surface, compact, uniform and free of pores, the applicable current range is wide, and a high-current area is prevented from being burnt.

Description

technical field [0001] The invention relates to the technical field of electroplating, in particular to a high-performance electroplating mist tin additive and a preparation method. Background technique [0002] With the rapid development of chips and integrated circuits, the demand for electronic electroplating products has grown rapidly, resulting in a steady increase in the output value of the electroplating industry. The research and development of high-performance electroplating matte tin additives has become a topic of increasing concern, especially the research and development of high-performance electroplating matte tin additives with characteristics such as deep plating ability and prevention of scorching in high current areas. [0003] CN105696033 discloses an electroplating tin additive and its preparation method and using method. The electroplating mist tin additive comprises 3-5% of nonionic surfactant, 5-10% of naphthyl polyoxyethylene ether, 1-3% of alkyl glyc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/32
CPCC25D3/32
Inventor 刘山张奥杨福兴
Owner NANJING POLYTECHNIC INSITUTE
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