Method for preparing sulfonic silicane-rare earth nano composite film on the surface of glass substrate

A technology of sulfosilane and glass substrate, which is applied to the preparation of sulfosilane-rare earth nanocomposite thin film by self-assembly on the surface of glass substrate, and the preparation field of rare earth nanocomposite thin film, which can solve the problem of long heat treatment time and self-assembled thin film. The process conditions are cumbersome and other problems, to achieve the effects of uniform distribution, dense film formation, and simple preparation

Inactive Publication Date: 2005-08-17
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The process conditions of the self-assembled film prepared by this method are relatively cumbersome, and the hea...

Method used

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Experimental program
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Effect test

Embodiment 1

[0014] First, the glass substrate is pretreated by hydroxylation. The treatment method: the glass substrate is immersed in Pirahan solution (H 2 SO 4 :H 2 o 2 =70:30, V / V), treated at room temperature for 1 hour, then ultrasonically cleaned with a large amount of deionized water for 20 minutes, placed in a dust-proof device and dried in an oven, the treated glass substrate was immersed in mercaptosilane After standing in the solution for 6 hours, the molar concentration of the components of the mercaptosilane solution is: 0.2 mmol / L of 3-mercaptopropylmethyldimethoxysilane, and the solvent is benzene solution. After taking it out, wash it with chloroform, acetone, and deionized water respectively to remove the organic molecules physically adsorbed on the surface, then dry it with nitrogen, place it in nitric acid with a weight concentration of 30%, and take it out after reacting at 80°C for 2 hours. Rinse with deionized water, so that the terminal sulfhydryl groups are oxid...

Embodiment 2

[0019] First, the hydroxylation pretreatment of the glass substrate: soak the glass substrate in Pirahan solution, treat it at room temperature for 1 hour, then ultrasonically clean it with a large amount of deionized water for 20 minutes, put it in a dust-proof device and dry it in an oven. Immerse the treated glass substrate in the prepared mercaptosilane solution and let it stand for 7 hours. The molar concentration of the components of the mercaptosilane solution is: 0.8mmol / L of 3-mercaptopropylmethyldimethoxysilane, and the solvent is Benzene solution; after taking it out, wash it with chloroform, acetone, and deionized water to remove the organic matter physically adsorbed on the surface, blow it dry with nitrogen, place it in nitric acid with a mass concentration of 50%, and react it at 65°C for 2 hours. Take it out with a large amount of deionized water Rinse with deionized water, so that the terminal sulfhydryl groups are oxidized into sulfonic acid groups in situ. T...

Embodiment 3

[0024] First, the hydroxylation pretreatment of the glass substrate: soak the glass substrate in Pirahan solution, treat it at room temperature for 1 hour, then ultrasonically clean it with a large amount of deionized water for 20 minutes, put it in a dust-proof device and dry it in an oven. Immerse the treated glass substrate in the prepared mercaptosilane and let it stand for 8 hours. The molar concentration of the components of the mercaptosilane solution is: 1.5mmol / L of 3-mercaptopropyltrimethoxysilane, and the solvent is benzene solution; After washing with chloroform, acetone, and deionized water respectively, dry it with nitrogen, place it in nitric acid with a mass concentration of 60%, and react at 50°C for 2 hours, take it out and rinse it with a large amount of deionized water, so that the terminal mercapto groups are put in place. Oxidized to sulfonic acid group. Then put the substrate with the sulfonic acid silane film on the surface into the prepared rare earth ...

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Abstract

The self-assembling process of preparing nanometer level sulfo silane-RE film on the hydroxylated surface of glass substrate includes first soaking glass substrate inside Pirahan solution for processing at room temperature for 1 hr, cleaning, drying, soaking inside hydroxy silane solution for 6-8 hr, flushing, blowing to dry with nitrogen, reaction in nitric acid solution to in-situ oxidize terminal mercapto radical into sulfo radical, and self assembling via setting the substrate with sulfo silane film on the surface inside self-assembling RE solution comprising RE compound, ethanol, EDTA, ammonium chloride, urea and nitric acid to form the self-assembled nanometer level sulfo silane-RE film. The present invention has simple process, and the prepared self-assembled nanometer level sulfo silane-RE film on the surface of glass substrate has obvious friction reducing and anti-wear effects.

Description

technical field [0001] The invention relates to a preparation method of a rare earth nanocomposite film, in particular to a method for preparing a sulfonic acid silane-rare earth nanocomposite film by self-assembly on the surface of a glass substrate. It belongs to the field of film preparation. Background technique [0002] The development of modern mechanical science shows the trend of mechatronics, ultra-precision and miniaturization. The gap between friction pairs of many high-tech devices is often at the nanometer level. Due to the influence of size effects in micro-machines, micro-friction and wear and nano-film Lubrication has become a key issue, which can be solved by preparing self-assembled nano-films by self-assembly method. Compared with other thin-film preparation technologies, self-assembled thin-film technology is operable and adaptable, and has broad application prospects. However, the preparation process of some self-assembled composite films is relatively...

Claims

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Application Information

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IPC IPC(8): C03C17/34
Inventor 程先华白涛吴炬上官倩芡
Owner SHANGHAI JIAO TONG UNIV
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