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Preparation method of light-shielding tape for wireless charger

A technology of wireless chargers and light-shielding tapes, applied in applications, adhesives, household appliances, etc., can solve the problems of affecting appearance, film performance, and lack of anti-fingerprint performance, so as to enhance dirt resistance, reduce adhesion, The effect of reducing the difficulty of cleaning

Active Publication Date: 2022-02-11
ZHEJIANG OUREN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, this kind of tape does not have anti-fingerprint performance. After repeated use, the residual fingerprint marks not only affect the appearance, but also have a certain impact on the performance of the film material.

Method used

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  • Preparation method of light-shielding tape for wireless charger
  • Preparation method of light-shielding tape for wireless charger
  • Preparation method of light-shielding tape for wireless charger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4

[0022] Embodiments 1 to 4: A method for preparing a light-shielding adhesive tape for a wireless charger, comprising a black ink layer 1, a substrate layer 2, and an adhesive layer 3, and the black ink layer 1 and the adhesive layer 3 are respectively Located on the upper surface and the lower surface of the substrate layer 2, the side of the adhesive layer 3 opposite to the substrate layer 2 is provided with a release layer 4;

[0023] The black ink layer 1 is obtained by drying the black ink, and the black ink is obtained through the following steps:

[0024] S1. Mix 60-80 parts of water-based polyurethane, 15-25 parts of deionized water, 1-5 parts of 1,1',1"-methine tris(4-isocyanate)benzene, and 0.1-0.3 parts of tripolyphosphoric acid Sodium is added to the high-speed stirring dispersant for stirring, the speed is 300-500r / min, and the mixture is uniform;

[0025] S2. Add 1-5 parts of carbon black, 1-1.5 parts of sodium silicate, 1-5 parts of polyethyleneimine, 0.5-2 part...

Embodiment 1

[0031] In embodiment 1, light absorbing agent is selected from nanometer Al / Al 2 o 3 For the core-shell material, the above-mentioned coupling agent is selected from coupling agent KH-580, the above-mentioned substrate layer 2 is a PET layer with a thickness of 2 μm, and the thickness of the above-mentioned black ink layer 1 is 1 μm.

Embodiment 2

[0032] In Example 2, the light absorbing agent is selected from nano-nickel powder, the above-mentioned coupling agent is selected from coupling agent KBM403, the above-mentioned substrate layer 2 is a PET layer with a thickness of 2.5 μm, and the thickness of the above-mentioned black ink layer 1 is 1.3 μm.

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Abstract

The invention discloses a method for preparing a light-shielding tape for a wireless charger, comprising a black ink layer, a substrate layer and an adhesive layer, wherein the black ink layer and the adhesive layer are respectively located on the upper surface of the substrate layer and the lower surface, the side of the adhesive layer opposite to the base material layer is provided with a release layer; the black ink layer is obtained by drying the black ink, and the black ink is prepared by the following steps: S1. 60~80 parts of water-based polyurethane, 15~25 parts of deionized water, 1~5 parts of 1,1',1"-methylenetris(4-isocyanato)benzene, 0.01~0.03 parts of sodium tripolyphosphate added at high speed Stir in the dispersing agent, the speed is 300~500r / min, and the mixing is uniform; S2, add 1~5 parts of carbon black, 1~1.5 parts of sodium silicate, 1~5 parts of polyethyleneimine, 0.5~2 parts of eighteen Alkyl dimethyl benzyl ammonium chloride and 0.5~1.5 parts of coupling agent, the rotating speed is adjusted to 500~600r / min, and the dispersion and stirring are uniform. The invention has anti-fingerprint performance, and will not remain after repeated use in various environments Fingerprint marks can avoid the corrosion of the tape caused by fingerprints and sweat stains.

Description

technical field [0001] The invention belongs to the technical field of adhesive tapes, and in particular relates to a preparation method of a light-shielding adhesive tape used for a wireless charger. Background technique [0002] Wireless charging technology, also known as inductive charging and non-contact charging, is a new charging technology derived from wireless power transmission technology. Wireless charging technology has developed rapidly in recent years, but it has also encountered many technical difficulties, such as improving charging efficiency, reducing costs, and the effective charging distance is too short. In order to obtain higher charging efficiency and reduce or eliminate the influence of the electromagnetic field on the mobile phone during charging, it is necessary to use an electromagnetic shielding film for shielding. The function of the electromagnetic shielding film is to isolate the influence of the electromagnetic field on the mobile phone, and p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/25C09J7/20C09J7/40C09D11/102C09D11/03
CPCC09J7/255C09D11/102C09D11/03C09J2467/006C09J2301/122
Inventor 夏厚君涂大记潘华杨晓明向建军
Owner ZHEJIANG OUREN NEW MATERIALS CO LTD
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