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Environment protection type weakly acidic deburring softening solution and preparation method and use method thereof

A weak acid and deburring technology, which is applied in the field of preparation of environment-friendly weak acid epoxy plastic package deburring and softening liquid, can solve the problems of high price, increased pressure, discoloration of plastic package, etc., and achieves convenient waste treatment, stable products, Ease of use

Active Publication Date: 2014-04-16
JIANGSU AISEN SEMICON MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, burrs are basically removed by manual scraping or mechanical sandblasting, electrolytic flash removal or chemical immersion in strong acid or strong alkaline solution in China. However, manual and mechanical methods are easy to damage the surface of the substrate, resulting in poor appearance and deburring. The effect of flashing is not ideal, and the flashing at the corners is easy to remain and affect the subsequent electroplating process; the method of electrolytic deburring needs to be equipped with expensive electrolytic deburring equipment, which puts a lot of pressure on small and medium-sized enterprises. ; In addition, the method of soaking in strong acid or strong alkaline solution, strong acid is easy to damage the metal substrate and the surface of the plastic package, but the strong alkaline solution is not easy to clean, and the residual substances on the surface are likely to cause problems such as discoloration of the plastic package, which will affect the product quality to a certain extent. Impact

Method used

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  • Environment protection type weakly acidic deburring softening solution and preparation method and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: Preparation of environment-friendly weakly acidic deburring softening solution

[0014] The weight percentage ratio of each component is carried out according to the following ratio: 40% dimethylacetamide, 40% dimethyl sulfoxide, 1% furfural, 0.5% OP-10 surfactant, and the balance is water.

[0015] The preparation process of this embodiment is as follows: according to the above-mentioned component content, add 2 / 3 of the water in the container; when stirring, add dimethylacetamide; when stirring, add dimethyl sulfoxide at a uniform speed, continue Stir for 5-10 minutes; while stirring, add furfural at a constant speed, and continue stirring for 5-10 minutes; while stirring, add OP-10 surfactant, add water to the required amount, and stir evenly.

[0016] The method of use in this embodiment is: first add the environment-friendly weakly acidic deburring and softening solution into the stainless steel tank, raise the temperature to 100-130°C, then put the s...

Embodiment 2-5

[0018] Repeat the method of Experimental Example 1 according to the content of each component specified in Table 1 below to obtain an environmentally friendly weakly acidic deburring softening solution made of different components. The experimental results are shown in Table 1.

[0019] Table 1 embodiment experiment concrete parameter

[0020]

[0021] It can be seen from the test results shown in Table 1 that the environment-friendly weakly acidic deburring softening solution provided by the present invention can remove burrs and oxides on the surface of the substrate by soaking at 100-130°C for 20-60 minutes, and has excellent The effect of deburring and deoxidation.

[0022] When using this product, avoid bringing in acidic or alkaline solutions, wash your hands after operation, ventilate the workplace and storage warehouse, and avoid contact with the skin or splashing into the eyes. During use, add according to the analysis, or when the pH value of the solution is grea...

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Abstract

The invention discloses a preparation method and a use method of an environment protection type weakly acidic deburring softening solution. The environment protection type weakly acidic deburring softening solution comprises the following components by weight percent: 30-50% of dimethyl acetamide, 30-50% of dimethyl sulfoxide, 0.5-1% of furfural, 0.5-1% of surfactant OP-10 (2-(2-[4-(1,1,3,3-Tetramethylbutyl)phenoxy]ethoxy)ethanol) and the balance water; and the pH value of the solution is 4.0-5.0. The provided environment protection type weakly acidic deburring softening solution has excellent deburring and deoxidizing effects and is safe and environmentally friendly; the materials of the formula completely meet the requirements of environmental protection, the product is stable, the wastes generated in the use process are convenient to treat; and the softening technology is simple, the cost is low and the softening solution is convenient in use.

Description

technical field [0001] The invention relates to a burr softening solution for an epoxy plastic package, in particular to the preparation and use method of an environment-friendly weakly acidic epoxy plastic package deburr softening solution. Background technique [0002] Electronic product components such as semiconductor packaging, PCB board printing, and passive components, before tinning, due to the good fluidity of small molecule epoxy resin in the process of chip plastic packaging, it will unnecessarily form on the surface of the substrate or at the pins. A layer of epoxy resin film with small molecules, commonly known as burrs or flashes. If it is not treated, it will affect the appearance of the product. Copper leakage will occur during electroplating and seriously affect the solderability of the coating, which will have a huge impact on the reliability of electronic components. Therefore, the product generally needs to be pre-treated and deburred. , Remove the plast...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G1/06
Inventor 刘顺生张兵赵建龙
Owner JIANGSU AISEN SEMICON MATERIAL CO LTD
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