A kind of wear-resistant, renewable polymer brush initiator coating and its preparation method and application
A technology of polymer brushes and initiators, applied in the direction of coating, etc., can solve the problems of lack of multiple-initiated grafted polymer brushes, cumbersome preparation steps, strong substrate selectivity, etc.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0023] The invention provides a preparation method of a wear-resistant and renewable polymer brush initiator coating, comprising the following steps:
[0024] Ethyl orthosilicate, alcohol, water, inorganic acid and ATRP initiator are mixed, hydrolyzed, and the resulting hydrolyzed solution is applied to the surface of the substrate to form a wear-resistant, renewable polymer brush initiator coating on the surface of the substrate .
[0025] In the present invention, without special instructions, the raw materials used are all commercially available commodities well known in the art.
[0026] In the present invention, ethyl orthosilicate, alcohol, water, inorganic acid and ATRP initiator are mixed for hydrolysis.
[0027] In the present invention, the alcohol is preferably a monohydric alcohol, more preferably ethanol; the inorganic acid preferably includes concentrated nitric acid or concentrated hydrochloric acid, more preferably concentrated nitric acid. In the present inv...
Embodiment 1
[0053] 1. Measure 12 mL of ethanol, 2 mL of ethyl orthosilicate, 1 mL of water, and 0.2 mL of concentrated nitric acid (mass fraction is 68%), add them to a beaker and stir evenly, then add 0.6 mL of 2-bromo-2- (3-trimethoxysilyl) propyl methylpropionate, after stirring for one hour, let stand for aging for 72 hours to obtain a hydrolyzate;
[0054] 2. Immerse a 1.5×1.5cm glass sheet into the above hydrolyzed solution for 20s at room temperature, then pull it out with a pulling machine at a speed of 20mm / min, and dry it at room temperature to obtain a glass sheet containing an initiator coating, The thickness of the initiator coating was 70 nm. The average static contact angle was measured to be 64.0±0.5°, which was significantly higher than that of the blank glass sheet, which was 40.2±0.3°, indicating that the initiator coating had covered the surface of the glass sheet.
Embodiment 2
[0067] 1. Measure 12 mL of ethanol, 3 mL of ethyl orthosilicate, 1 mL of water, and 0.3 mL of concentrated nitric acid (mass fraction is 68%) respectively, add them to a beaker and stir evenly, then add 0.1 mL of 2-bromo- (3-trimethoxysilyl) propyl 2-methylpropanoate, after stirring for one hour, let stand for aging for 72 hours to obtain a hydrolyzate;
[0068] 2. Immerse a 1.5×1.5cm glass sheet into the above hydrolyzed solution for 20s at room temperature, then pull it out with a pulling machine at a speed of 20mm / min, and dry it at room temperature to obtain a glass sheet containing an initiator coating, The thickness of the initiator coating was 75 nm. The average static contact angle was measured to be 62.1±0.3°, which was significantly higher than the static contact angle of the blank glass sheet of 40.2°.
PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More