Metal film and formation method of metal film
A metal film and substrate technology, applied in metal material coating process, transportation and packaging, liquid chemical plating, etc., can solve troublesome problems such as plasma surface treatment, and achieve excellent adhesion properties
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Embodiment 1
[0153] [Manufacturing of substrates]
[0154] The following polymerization initiating layer coating solution was applied to a polyimide film (trade name: Kapton, manufactured by Du Pont Toray Co., Ltd.) by using a #18 rod and dried at 80° C. for 2 minutes.
[0155] The resulting film was preliminarily cured by irradiation with a 400 W high-pressure mercury lamp (UVL-400 P, manufactured by Riko Kagaku Sangyo Co., Ltd.) for 10 minutes to form a polymerization initiation layer on the substrate. The obtained polymerization initiating layer had a thickness of 6.5 μm.
[0156] Rz of the polyimide film substrate was 15 nm calculated according to JIS B 0601 from the measured value in the range of 40 μm×40 μm by Nanopics 1000 (manufactured by Seiko Instruments Inc.). The same measurement was performed on the polymerization initiating layer formed on the polyimide film, and it was found that Rz was 10 nm and the surface roughness of the substrate used in the examples was within the pre...
Embodiment 2
[0176] The metal film obtained in Example 1 was further plated in a plating bath of the following composition for 15 minutes to produce a metal film 2 .
[0177]
[0179] Sulfuric acid 95g;
[0180] Hydrochloric acid 1mL;
[0181] Copper Gleam PCM (manufactured by Meltex Co., Ltd.) 3 mL; and
[0182] water 500g
[0183] (fine particle dispersion state in the polymer layer on which the metal film is formed)
[0184] In Example 2, the dispersed state of fine particles in the polymer layer on which the metal film was formed was observed. Details are as follows.
[0185] The region where the metal film was formed was cut with a diamond cutter (trade name: Sumiknife) equipped with a thin slice cutter (manufactured by Leika Co., Ltd.) by using a microscope to obtain a sample having a clean plated cross section. The obtained sample was observed by SEM to confirm the dispersion state of fine particles in the polymer adjacent to the metal film. FIG...
Embodiment 3
[0191] [Formation of cross-linked polymers]
[0192] A coating solution of the following composition was applied to the substrate used in Example 1 on which the polymerization initiating layer was formed by using a #18 rod. The obtained film had a thickness of 0.8 μm. Do the same for the back.
[0193]
[0194] Polymer A 0.25 g and cyclohexanone 8.0 g having a polymerizable group (the synthesis method is as follows)
[0195]
[0196] (Synthesis of Monomer A)
[0197] To a 500mL three-necked flask, add 58.6g of 2-hydroxyethyl methacrylate, and then add 250ml of acetone, and stir. After adding 39.2 g of pyridine and 0.1 g of p-methoxyphenol, the mixture was cooled in an ice bath containing ice water. After cooling the mixed solution to 5° C., 114.9 g of 2-bromoisobutyric acid bromide were added dropwise through the dropping funnel over 3 hours. After the dropwise addition was completed, the mixture was taken out from the ice bath, followed by stirring for 3 hours. The ...
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