Low-VOC waterproof coating for mobile phones, and preparation method and application thereof

A waterproof coating, a special technology, applied in polyester coatings, coatings, devices for coating liquid on the surface, etc., can solve the problem of poor waterproof performance of the metal and plastic integrated middle frame, and reduce VOC emissions, reduce Raw material waste, low viscosity effect

Active Publication Date: 2019-10-22
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 co

Method used

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  • Low-VOC waterproof coating for mobile phones, and preparation method and application thereof
  • Low-VOC waterproof coating for mobile phones, and preparation method and application thereof
  • Low-VOC waterproof coating for mobile phones, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0059] The preparation method of component A is:

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

[0061] S2. Weigh the hydroxyl-containing silicone modified polyester and acrylic polyol resin in component A according to parts by weight, add them dropwise, stir for 20-30 minutes, and stir at 600-800 revolutions per minute;

[0062] S3. Filter with a 300-mesh filter to obtain component A;

[0063] The preparation method of the B component is: under the condition of constant temperature and humidity, add the polyisocyanate curing agent and solvent in the B component into the reaction kettle in parts by weight, and stir and disperse under the condition of nitrogen gas. After ~20mins, use 300 mesh filter packaging, and the packaging process is also operated under the protection of nitrogen gas. Nitrogen in the preparation process is to prevent the water vapor in the air from r...

Example Embodiment

[0078] Example 1

[0079] The formula of the low-VOC waterproof coating for mobile phones is shown in Table 1 (unit: parts by weight)

[0080] Table 1 Low VOC Waterproof Coating Special for Mobile Phone in Example 1

[0081]

[0082]

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

[0084] The preparation method of component A is:

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

[0086] S2. Weigh the hydroxyl-containing silicone modified polyester and acrylic polyol resin in component A according to parts by weight, add them dropwise, stir for 20-30 minutes, and stir at 600-800 revolutions per minute;

[0087] S3. Filter with a 300-mesh filter to obtain component A;

[0088] The preparation method of component B is: under the condition of constant temperature and humidity, add isocyanate and polyurethane-grade butyl acetate...

Example Embodiment

[0089] Example 2

[0090] The formula of the low-VOC waterproof coating for mobile phones is shown in Table 2 (unit: parts by weight)

[0091] Table 2 Low-VOC waterproof coating special for mobile phones in Example 2

[0092]

[0093]

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

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Abstract

The invention discloses a low-VOC waterproof coating, and a preparation method and an application thereof. The low-VOC waterproof coating for mobile phones comprises a component A and a component B, the A component comprises, by weight, 80-90 parts of hydroxyl-containing silicone modified polyester, 10-20 parts of acrylic polyol resin, 0.1-0.3 part of a leveling agent, 0.05-0.1 part of a wetting agent, 0.1-0.5 part of an antifoaming agent, 0.01-0.05 part of an organotin drier and 1-10 parts of a solvent; and the component B includes, by weight, 70-80 parts of a polyisocyanate curing agent and20-30 parts of the solvent. The low-VOC waterproof coating for mobile phones makes the solid content reach 65% or above during construction, so the VOC emission is effectively reduced; and the coatinghas good adhesion to various metals and various plastic materials, and has an excellent waterproof effect when used in middle frames of mobile phones in order to make the self-contained mobile phoneshave no leakage phenomenon after being immersed in water with a depth of 1 m for 200 min.

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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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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