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Waterproof coating

A waterproof coating and hydrophobic technology, applied in the direction of coating, etc., can solve the problems of non-environmental protection, bulkiness, damage, etc., achieve excellent waterproof performance, simple preparation process, and reduce production costs

Active Publication Date: 2014-02-12
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this design is not beautiful enough, bulky, and for the manufacturer, it increases the cost of design and molds, and it is easy to lose waterproofness due to structural damage, such as cracks or missing blocks.
[0003] However, the existing waterproof coatings can only be applied to construction, home furnishing and other fields, and it is difficult to apply to electronic products such as mobile phones and PCs. Moreover, the existing coatings have certain toxic effects and are not environmentally friendly.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] First, add paraffin wax to absolute ethanol, heat to 50°C and stir until the wax is completely dissolved to form a paraffin wax solution; then add deionized water to the paraffin wax solution and quickly mix until uniform to prepare hydrophobic paraffin wax.

[0026] Then, stir 550g of acrylic resin, 200g of lotus leaf hydrophobic agent, 20g of dispersant (BYK 5040) and 30g of defoamer (YH-203) with a high-speed disperser at a speed of 500r / min at room temperature, The time is 10 min; then 100 g of nano-hydrophobic silicon dioxide is added, and stirred at a speed of 2000 r / min for 1 h. Finally, 100 g of hydrophobic paraffin was added and stirred at 2500 r / min for 2 hours to obtain the finished product.

Embodiment 2

[0028] First, add paraffin wax to absolute ethanol, heat to 45°C and stir until the wax is completely dissolved to form a paraffin wax solution; then add deionized water to the paraffin wax solution and quickly mix until uniform to prepare hydrophobic paraffin wax.

[0029] Then, stir 500g of acrylic resin, 180g of lotus leaf hydrophobic agent, 10g of dispersant (BYK 5027) and 10g of defoamer (YH-203) with a high-speed disperser at a speed of 500r / min at room temperature, The time is 10 minutes; then add 150g of nano-hydrophobic silicon dioxide and stir for 1 hour at a speed of 2000r / min; finally add 150g of hydrophobic paraffin and stir for 2 hours at 2500r / min to obtain the finished product.

Embodiment 3

[0031] First, add paraffin to absolute ethanol, heat to 55°C and stir until the wax is completely dissolved to form a paraffin solution; then add deionized water to the paraffin solution and quickly mix until uniform to prepare hydrophobic paraffin.

[0032] Then, 400g of acrylic resin, 300g of lotus leaf hydrophobic agent, 20g of dispersant (BYK 5027) and 20g of defoamer (YH-203) were stirred with a high-speed disperser at a speed of 500r / min at room temperature, The time is 10 minutes; then add 140g of nano-hydrophobic silicon dioxide and stir for 1 hour at a speed of 2000r / min; finally add 120g of hydrophobic paraffin and stir for 2 hours at 2500r / min to obtain the finished product.

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PUM

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Abstract

The invention provides a waterproof coating. The waterproof coating comprises a film forming agent, a hydrophobic agent, hydrophobic nano-silica and hydrophobic paraffin. The waterproof coating is a colorless and transparent coating substance having a waterproof function, and can be directly coated on the circuit board or shell of a mobile phone to realize waterproof and dustproof effects. A preparation technology of the waterproof coating is simple and can be simply operated, so the production cost of the mobile phone is reduced. The coating is directly coated on the circuit board, so the obtained coat has an excellent waterproof performance, thereby there is no need to change the original structure design of the mobile phone.

Description

technical field [0001] The invention relates to the field of waterproofing, in particular to a waterproof coating. Background technique [0002] With the development of society, the advancement of science and technology, and the gradual expansion of the mobile phone market, the performance requirements of consumers for mobile phones are also constantly improving. While mobile phones are becoming more functional and intelligent, they are beginning to pursue humanization, such as waterproofing. Due to the continuous development of functionalization and intelligence on mobile phones, consumers can play with mobile phones anytime and anywhere. They use mobile phones when driving, walking, eating, working, and even when going to the toilet and bathing. However, when taking a shower or going to the toilet, the mobile phone is accidentally dropped into the toilet or sink, so that the mobile phone will enter the water, causing the mobile phone to be short-circuited and broken. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D7/12
Inventor 何顺鸿
Owner BYD CO LTD
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