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Low voc waterproof coating for mobile phones and its preparation method and application

A kind of waterproof coating, a special technology, applied in low VOC waterproof coating, waterproof on smart phone products, application of low VOC waterproof coating, the preparation field of the above-mentioned low VOC waterproof coating, can solve the problem of waterproof performance of metal and plastic integrated middle frame To achieve the effect of reducing VOC emissions, not polluting the environment, and reducing waste of raw materials

Active Publication Date: 2021-05-25
HUNAN SOKAN NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a low-VOC waterproof coating for mobile phones and a preparation method and application of the waterproof coating to solve the technical problem of poor waterproof performance of the metal and plastic integrated middle frame inside the smart phone

Method used

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  • Low voc waterproof coating for mobile phones and its preparation method and application
  • Low voc waterproof coating for mobile phones and its preparation method and application
  • Low voc waterproof coating for mobile phones and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0059] The preparation method of A component is:

[0060] S1. Weigh the leveling agent, wetting agent, defoamer and solvent in component A by parts by weight, add it dropwise, and stir until fully dissolved;

[0061] S2. Weigh the hydroxyl-containing silicone-modified polyester and acrylic polyol resin in component A by weight, add dropwise, stir for 20-30 minutes, and the stirring speed is 600-800 rpm;

[0062] S3, adopt 300 order filter screens to filter, obtain A component;

[0063] The preparation method of component B is as follows: under the condition of constant temperature and humidity, add the polyisocyanate curing agent and solvent in component B into the reaction kettle by weight, stir and disperse under the condition of nitrogen filling, stir and disperse for 15 After ~20mins, use 300-mesh filter packaging, and the packaging process is also operated under the protection of nitrogen gas. Nitrogen filling during the preparation process is to prevent the reaction of...

Embodiment 1

[0079] The formula of the special low VOC waterproof coating for mobile phone is as follows table 1 (unit: parts by weight)

[0080] The special low VOC waterproof coating of the mobile phone of table 1 embodiment 1

[0081]

[0082]

[0083] The preparation method of the special low VOC waterproof coating for the above-mentioned mobile phone:

[0084] The preparation method of A component is:

[0085] S1. Weigh the leveling agent, wetting agent, defoamer and solvent in component A by parts by weight, add it dropwise, and stir until fully dissolved;

[0086] S2. Weigh the hydroxyl-containing silicone-modified polyester and acrylic polyol resin in component A by weight, add dropwise, stir for 20-30 minutes, and the stirring speed is 600-800 rpm;

[0087] S3, adopt 300 order filter screens to filter, obtain A component;

[0088]The preparation method of component B is: under the condition of constant temperature and humidity, add the isocyanate in component B and polyur...

Embodiment 2

[0090] The formula of the special low VOC waterproof coating for mobile phone is as follows table 2 (unit: parts by weight)

[0091] The special low VOC waterproof coating of the mobile phone of table 2 embodiment 2

[0092]

[0093]

[0094] The preparation method of the above-mentioned low-VOC waterproof coating for mobile phones is the same as that of Example 1.

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Abstract

The invention discloses a low-VOC waterproof coating for mobile phones and a preparation method and application of the waterproof coating. The low-VOC waterproof coating for mobile phones includes component A and component B, and the component A includes The following components: 80-90 parts of hydroxyl-containing silicone modified polyester, 10-20 parts of acrylic polyol resin, 0.1-0.3 parts of leveling agent, 0.05-0.1 part of wetting agent, 0.1-0.5 parts of defoamer, 0.01-0.05 parts of organic tin drier and 1-10 parts of solvent; the B component includes the following components in parts by weight: 70-80 parts of polyisocyanate curing agent and 20-30 parts of solvent. The low-VOC waterproof coating for mobile phones of the present invention can have a solid content of more than 65% during construction, effectively reducing VOC emissions; it has good adhesion on various metals and various plastic materials, and it is used in the middle frame of mobile phones Waterproof has an excellent effect, so that the fully assembled mobile phone has no leakage at all when it is submerged at a depth of 1m for 200 minutes.

Description

technical field [0001] The invention relates to the technical field of waterproof coatings, in particular to a low-VOC waterproof coating for waterproofing mobile phones, and in particular to waterproofing applied to smartphones with a metal-plastic integrated middle frame or a frame with a battery cover integrated. In addition, the present invention also relates to a preparation method of the above-mentioned low-VOC waterproof paint and an application of the low-VOC waterproof paint. Background technique [0002] With the rapid development of smart phone technology, smart phones have become an indispensable tool in our life, but "mobile phone water entry" has become one of the main problems of mobile phone damage. At present, most smartphones are not waterproof. Some mobile phone manufacturers have made many improvements to the waterproofing of mobile phones. For example, the structure is waterproof. Rubber strips and sealing rings are used to seal the earphone jack, card ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/00C09D133/04B05D3/02
CPCB05D3/0254C09D167/00C08L33/066
Inventor 熊非常汤翔宇王卫国吕国强缪培凯凌云剑符饶生杨波
Owner HUNAN SOKAN NEW MATERIAL
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