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Brass with self-assembling membrane and preparation method thereof

A self-assembly film and self-assembly technology, applied in chemical instruments and methods, devices for coating liquids on surfaces, layered products, etc., can solve the problems of large dosage, environmental pollution, economic losses, etc., and achieve high corrosion resistance. The effect of performance, simple preparation process and convenient operation

Inactive Publication Date: 2014-12-31
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual use, due to the presence of aggressive ions (such as Cl-) in cooling water, especially seawater, brass often suffers from serious corrosion problems, which brings huge economic losses to production.
Although the traditional corrosion inhibitor technology has a good anti-corrosion effect, there are disadvantages such as environmental pollution and large dosage

Method used

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  • Brass with self-assembling membrane and preparation method thereof
  • Brass with self-assembling membrane and preparation method thereof
  • Brass with self-assembling membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A brass self-assembled film with corrosion resistance, that is, a layer of silane film is prepared on the surface of brass by simple self-assembled technology.

[0045] The above-mentioned preparation method of a brass self-assembled film with corrosion resistance specifically comprises the following steps:

[0046] (1), brass pretreatment

[0047] After polishing the 7 pieces of brass step by step with 1#, 4#, and 6# metallographic sandpaper, first rinse with deionized water, then scrub with acetone to achieve the effect of degreasing, then scrub with absolute ethanol, and finally Rinse with deionized water;

[0048] (2), preparation of silane solution

[0049] Prepare silane solutions with different volume fractions, and calculate according to the volume ratio of silane coupling agent KH-792, deionized water and absolute ethanol, wherein silane coupling agent KH-792: deionized water: absolute ethanol = Xml: 20ml: 80ml, where the value of X is 0ml...

Embodiment 2

[0060] A brass with a self-assembled film, that is, a layer of silane film is prepared on the surface of the brass by simple self-assembled technology.

[0061] A kind of above-mentioned preparation method of brass with self-assembled film specifically comprises the following steps:

[0062] (1), brass pretreatment

[0063] After polishing the 6 pieces of brass step by step with 1#, 4#, and 6# metallographic sandpaper, first rinse with deionized water, then scrub with acetone to achieve the effect of degreasing, then scrub with absolute ethanol, and finally Rinse it with deionized water, and one of them is blank, that is, the self-assembled film has been processed 0 times;

[0064] (2), preparation of silane solution

[0065] Prepare silane solution, that is, calculate according to the volume ratio of silane coupling agent KH-792, deionized water and absolute ethanol, wherein silane coupling agent KH-792: deionized water: absolute ethanol is 20ml: 20ml: 80...

Embodiment 3

[0079] A brass with a self-assembled film, that is, a layer of silane film prepared on the surface of the brass by simple self-assembled technology.

[0080] A method for preparing brass with a self-assembled film, specifically comprising the steps of:

[0081] (1), brass pretreatment

[0082] After polishing the two pieces of brass step by step with 1#, 4#, and 6# metallographic sandpaper, first rinse with deionized water, then scrub with acetone to achieve the effect of degreasing, then scrub with absolute ethanol, and finally Rinse with deionized water, one of which is used as a blank brass electrode;

[0083] (2), preparation of silane solution

[0084] Prepare silane solution, calculate according to the volume ratio of silane coupling agent KH-792, deionized water and absolute ethanol, wherein silane coupling agent KH-792: deionized water: absolute ethanol is 20ml: 20ml: 80ml, the silane The mixture of coupling agent KH-792, deionized water and absol...

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Abstract

The invention discloses brass with a self-assembling membrane and a preparation method thereof. Through a simple self-assembling technology, a silane membrane, or a composite membrane composed of a silane membrane and a sodium tungstate membrane is formed on the surface of brass so that the brass with the self-assembling membrane is obtained. The composite membrane is a laminated structure and is prepared by preparing a silane membrane tightly on the surface of the brass by the simple self-assembling technology and preparing a sodium tungstate membrane on the surface of the silane membrane by the simple self-assembling technology. The preparation method of the brass with the self-assembling membrane comprises brass pretreatment, self-assembling membrane solution preparation and membrane self-assembling. The surface of the brass with the self-assembling membrane has high corrosion resistance. Through utilization of the self-assembling technology, the preparation method has the characteristics of simple processes and convenient operation.

Description

technical field [0001] The invention relates to a brass with a self-assembled film and a preparation method thereof, in particular to a method for preparing a silane film or a composite film composed of a silane film and a sodium tungstate film on the surface of brass through a simple self-assembly technique. Background technique [0002] Because of its excellent heat transfer and corrosion resistance, brass is widely used in thermal power generation units and heat exchange systems in marine military engineering. However, in actual use, due to the presence of aggressive ions (such as Cl-) in cooling water, especially seawater, brass often suffers from serious corrosion problems, which brings huge economic losses to production. Although the traditional corrosion inhibitor technology has a good anti-corrosion effect, it has disadvantages such as environmental pollution and large dosage. Self-assembled film surface treatment technology is a new anti-corrosion technology that h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B15/04B32B9/04B05D1/18B05D1/38
Inventor 徐群杰王君伟张国利李美明云虹
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER