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Product with coating and preparation method thereof

A technology for products and coatings, which is applied in the field of products with hydrophobic and wear-resistant coatings and its preparation, and can solve problems such as lack of economic benefits

Inactive Publication Date: 2015-07-29
SIEMENS SHANGHAI MEDICAL EQUIP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] So far, there is still a lack of economical and cost-effective methods for preparing coated articles with water repellency and abrasion resistance

Method used

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  • Product with coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Example 1. Preparation of coating solution for waterproof surface: 5g of nonafluorohexyl-trichlorosilane, 1g of water and 2g of ethyltriethoxysilane were added to 100g of ethanol, and the resulting mixture was stirred for 30 minutes before use minute. The polymeric fabric was treated with the following steps: (1) ultrasonication for 3 minutes in two successive water baths; (2) dry cleaning of both sides of the fabric at room temperature; (3) rinsing. The polymer fabric was then immersed in the silane solution for 2 hours at 20°C. Fabrics can be sonicated in ethanol for more than 5 min to remove unreacted compounds. Finally, the above fabric was dried at 30°C for 10 minutes. The contact angle of the surface after treatment is 14°, while the rolling angle in the initial state is 10°, which is less than 5° after treatment.

[0042] figure 2 The water repellency and non-stickiness of the above fabrics are illustrated. figure 2 The sample shown in B is a surface-treat...

Embodiment 2

[0043] Embodiment 2. The preparation of the coating liquid of waterproof surface: will 2 g of heptadecafluorooctyl-trimethoxysilane, 0.5 g of water, with 1g Tetrapropyl orthosilicate was added to 100 g of ethanol, and the resulting mixture was stirred for 30 minutes before use. The polymeric fabric was treated with the following steps: (1) ultrasonication for 3 minutes in two successive water baths; (2) dry cleaning of both sides of the fabric at room temperature; (3) rinsing. The polymer fabric was then immersed in the silane solution for 2 hours at 20°C. Fabrics can be sonicated in ethanol for more than 5 min to remove unreacted compounds. Finally, the above fabric was dried at 30°C for 10 minutes. The contact angle of the treated surface is more than 15°, while the rolling angle in the initial state is less than 10°, and the rolling angle of the treated surface is less than 5°.

Embodiment 3

[0044] Example 3. The coating liquid used in Example 2 was sprayed onto the inner surface of the mold at room temperature; by thermal compression, a low roughness of about 50 nm to 1 μm was produced on the untreated pad surface. Then, immerse the pad in hot water at 40°C-100°C. Then put the liner body into the mold, and carry out the thermal compression process at 100°C for 3 minutes. Further modification was performed to lower the critical surface tension by incorporating a low surface energy fluorosilane with reactive end groups, fluoroalkyltrimethoxysilane, onto the surface. The hydrolyzed fluoroalkyltrimethoxysilane coating on the pad surface produced a superhydrophobic film with a contact angle greater than 150. The body contact angle of the liner before treatment was about 100°.

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Abstract

The invention discloses a product with a coating and a preparation method thereof. The coating comprises a fluorosilane compound with reactive terminal groups. The reactive terminal groups are groups capable of reacting with a base layer of the product. The coating is connected to the base layer of the product by a chemical bond. The coating has good endurance and stable hydrophobicity and can resist a wet environment and external force-caused sliding friction.

Description

technical field [0001] The invention relates to the field of surface treatment, in particular to a product with a hydrophobic wear-resistant coating and a preparation method thereof. Background technique [0002] In many devices such as medical equipment, scientific research or production consoles, leisure equipment such as fitness equipment, etc., a hydrophobic surface is required, and it is best to have a self-cleaning function. Most of the hydrophobic coatings now imitate the microstructural characteristics of lotus leaves, and the principle lies in the combination of small surface roughness and low surface free energy. When water droplets fall on the lotus leaf, it is difficult to wet the surface of the lotus leaf, and the water droplets are easy to roll off. Fluoride-functionalized coatings combine the properties of low surface energy and chemical inertness, so that the coatings can be used in a variety of applications. [0003] It is well understood that the wettabil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/04B32B37/02B32B37/15D06M13/517D06M13/513D06M13/507
Inventor 曹雷滕长青赵文江
Owner SIEMENS SHANGHAI MEDICAL EQUIP LTD
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