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Etching solution, and method for metallization of plastic surface employing the method

An etching solution and metallization technology, applied in the field of etching solution, can solve problems such as problems in use and deterioration of working environment, and achieve the effect of high stability and excellent modification effect.

Inactive Publication Date: 2010-03-24
EBARA-UDYLITE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the above-mentioned etching treatment, since the harmful hexavalent chromium is used and the operation is carried out at a high temperature above 60°C, the working environment is deteriorated, and its wastewater treatment is also a problem that must be paid attention to.
[0004] In addition, permanganic acid can be used to etch the surface of plastics, but depending on the conditions of use, permanganic acid may decompose rapidly, causing problems in industrial use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation of etching solution (1):

[0034] The components were mixed in water so as to obtain the amounts shown in Table 1 below to prepare etching solutions. After each of these etching solutions was heated to 70°C, the time until the bath was decomposed was measured. In addition, it can be judged visually from the color tone (from purple to brown) from bath to decomposition. The results are also shown in Table 1 together.

[0035] 【Table 1】

[0036]

[0037] Implementation 4

[0038] All numerical units are mol / L

Embodiment 2

[0040] Manufacture of electroless plating film:

[0041] Using 50×100×3mm ABS resin (manufactured by UMGABS Co., Ltd.) as a sample, it was heated to 35°C in each etching solution produced in the above-mentioned Example 1 (implementation products 1-7 and comparative products 1-7) Soak in for 10 minutes. Then, this was immersed in 35 degreeC neutralization / reduction treatment liquid DS-350 (made by Ebara Udylite Co., Ltd.) for 3 minutes, and the surface was neutralized / reduced.

[0042] The neutralized / reduced sample was immersed in 200 mg / L of PAA-03 (polyallylamine: manufactured by Nitto Bosho Co., Ltd.) with sodium hydroxide to adjust the pH to 10 at 30°C in a catalyst-imparting enhancement solution for 2 Minutes, then soak it in 1.2mol / L hydrochloric acid for 1 minute at room temperature. The sample was immersed in a 35° C. palladium / tin mixed colloidal catalyst solution containing 10 ml / L of CT-580 (manufactured by Ebara Udylite Co., Ltd.) and 2.5 mol / L of hydrochloric ac...

Embodiment 3

[0054] Manufacture of etching solution:

[0055] The components were mixed in water so as to obtain the amounts shown in Table 3 below to prepare etching solutions. After each of these etching solutions was heated to 70° C., the same operation as in Example 1 was carried out, and the time from bath to decomposition was measured. The results are shown in Table 3.

[0056] 【table 3】

[0057]

Potassium permanganate

sulfuric acid

Periodic acid

pH

bath to decompose

time required

Comparator 2

0.06

5

0

Below 1.0

30 minutes break down

Implementation 8

0.06

5

0.01

Below 1.0

1 hour decomposition

Implementation 9

0.06

5

0.02

Below 1.0

2 hours decomposition

Implementation 10

0.06

5

0.1

Below 1.0

No change over 15 hours

Implementation 2

0.06

5

0.2

Below 1.0

No change over 15 hours...

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PUM

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Abstract

Disclosed is an etching solution which is highly effective for modifying various plastic materials, has high bath stability, and can be used for the metallization of a plastic surface on an industrialscale. The etching solution comprises a permanganic acid salt and a periodic acid salt or a salt thereof, and has a pH value of 2.0 or lower.

Description

technical field [0001] The present invention relates to an etching solution, in more detail, relates to an etching solution with excellent plastic modification effect and high bath stability and a plastic surface metallization method using the etching solution. Background technique [0002] In the past, when the plastic surface was metallized by plating, in order to improve the adhesion between the plastic surface and the plated film, it was known that the plastic surface was roughened with a mixed solution of chromic acid and sulfuric acid before the plating treatment. etching treatment. [0003] However, in the above-mentioned etching treatment, since harmful hexavalent chromium is used and the operation is carried out at a high temperature above 60° C., the working environment is deteriorated, and the wastewater treatment is also a problem that must be paid attention to. [0004] In addition, permanganic acid can be used to etch the surface of plastics, but depending on ...

Claims

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Application Information

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IPC IPC(8): C23C18/24C09K13/04C25D5/56
CPCC23C18/24C25D5/56C09K13/04
Inventor 仓持保之中山香织
Owner EBARA-UDYLITE CO LTD
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