Leveling liquid for wet leveling and preparation method thereof

Abstract

The invention discloses a leveling liquid for wet leveling, the structural formula of the leveling liquid for wet leveling is # imgabs0 #, and R1 is any one alkyl group in C10-C14.

Description

Technical Field

[0001] The invention relates to a novel additive, in particular to a leveling liquid used for wet leveling and a preparation method thereof. Background Art

[0002] After cold rolling and annealing in the strip production process, the surface material needs to be further processed and hardened, and the surface material also needs to increase a certain degree of roughness to meet the requirements of end customers. At this time, it will be achieved through the flattening process.

[0003] The leveling process can be roughly divided into dry leveling and wet leveling. Dry leveling is to directly transfer the roughness of the working roll to the surface of the strip through roughness transfer, and its disadvantage is low efficiency. Wet leveling is to spray the leveling liquid on the surface of the strip and blow it after leveling. Its advantage is fast leveling speed, but its disadvantage is that a small amount of leveling liquid will be entrained into the steel coil, which will cause rust, residue and other phenomena.

[0004] Among the existing wet leveling technologies, the common categories are roughly divided into nitrites and alcohol amine organic acids. Among them, nitrites have excellent anti-rust performance, but they are highly toxic and not environmentally friendly. Many steel mills require the use of nitrite-free products.

[0005] The alcohol amine leveling liquid needs to be able to quickly cover the surface of the strip when sprayed onto it, so that the rust-proof material can effectively form a film, thereby achieving the rust-proof effect. However, since the surfactant and the rust-proof additive are two components of today's products, it is difficult to ensure that the rust-proof additive is equally effective at the moment of film formation, which in turn affects the rust-proof effect. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a leveling liquid for wet leveling, which can improve the film-forming ability of the leveling liquid and reduce the concentration used on site, and at the same time improve the anti-rust ability of the leveling liquid after application, wherein the structural formula of the leveling liquid for wet leveling is:

[0007]

[0008] Here, R1 is any alkyl group of C10 to C14.

[0009] According to an embodiment of the present invention, R1 is any alkyl group among C10-C12.

[0010] According to an embodiment of the present invention, R1 is any alkyl group of C12-C14.

[0011] According to another aspect of the present invention, the present invention provides a method for preparing a leveling fluid for wet leveling, wherein the method for preparing a leveling fluid for wet leveling comprises:

[0012] Add a predetermined amount of deionized water;

[0013] Then, adding a predetermined proportion of ethanolamine to the deionized water and stirring evenly to form an ethanolamine mixed solution;

[0014] Add a predetermined amount of siloxane to the ethanolamine mixture and dissolve until the solution becomes clear and transparent;

[0015] Then, a preset amount of organic acid and fatty alcohol polyoxyethylene ether is added to the clear liquid, and stirred until it becomes clear and transparent to prepare a leveling liquid for wet leveling, the structural formula of which is:

[0016]

[0017] According to one embodiment of the present invention, the volume ratio of the added deionized water, ethanolamine, siloxane, organic acid and fatty alcohol polyoxyethylene ether is: (1-50): (1-30): (1-30): (1-35): (1-25). DETAILED DESCRIPTION

[0018] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0019] According to a preferred embodiment of the present invention, a leveling fluid for wet leveling has a structural formula of:

[0020]

[0021] Here, R1 is any alkyl group of C10 to C14.

[0022] In one embodiment, R1 is any alkyl group of C10-C12.

[0023] In one embodiment, R1 is any alkyl group of C12 to C14.

[0024] It is worth mentioning that the siloxane end has very strong wettability and can be used as a wetting agent, while the polyoxyethylene ether end on the right is a hydrophilic end, which ensures that the molecule can be dissolved in the leveling liquid. In the structural formula of the leveling liquid used for wet leveling, the anti-rust molecule is directly connected to the siloxane, which can ensure that the anti-rust additive is quickly spread on the surface of the strip and play a better anti-rust function.

[0025] It can be understood that the combination of siloxane molecules and amine salts can not only form a film quickly, but also ensure that the formed film is an anti-rust component film, isolating the air and preventing water molecules in the air from contacting the iron ions on the surface of the strip to form rust.

[0026] It is worth mentioning that the water solubility below C10 is very good but the anti-rust performance will deteriorate, and the water solubility above C14 is very poor, which will cause the overall turbidity of the leveling fluid used for wet leveling.

[0027] Example 1

[0028] In one embodiment, the structural formula of the leveling fluid used for wet leveling is:

[0029]

[0030] Where R1 is C10.

[0031] Example 2

[0032] In one embodiment, the structural formula of the leveling fluid used for wet leveling is:

[0033]

[0034] Where R1 is C12.

[0035] Example 3

[0036] In one embodiment, the structural formula of the leveling fluid used for wet leveling is:

[0037]

[0038] Wherein R1 is C13.

[0039] Comparative Example 1

[0040] In a comparative example, the structural formula of the leveling liquid is:

[0041]

[0042] Where R1 is C9.

[0043] Comparative Example 2

[0044] In a comparative example, the structural formula of the leveling liquid is:

[0045]

[0046] Wherein R1 is C15.

[0047] The experimental data obtained by quickly covering the surface of the steel strip with the leveling liquid formed in Example 1, Example 2, Example 3, Comparative Example 1 and Comparative Example 2 are as follows:

[0048] Experimental data:

[0049]

[0050] According to another aspect of the present invention, the present invention provides a method for preparing a leveling fluid for wet leveling, wherein the method for preparing a leveling fluid for wet leveling comprises:

[0051] S1001, adding a predetermined amount of deionized water;

[0052] S1002, adding a predetermined proportion of ethanolamine to the deionized water and stirring evenly to form an ethanolamine mixed solution;

[0053] S1003, adding a predetermined amount of siloxane to the ethanolamine mixed solution and dissolving the siloxane until the solution becomes clear and transparent;

[0054] S1004, adding a preset amount of organic acid and fatty alcohol polyoxyethylene ether to the clear liquid, stirring until clear and transparent, to prepare a leveling liquid for wet leveling, the structural formula of which is:

[0055]

[0056] In a preferred embodiment, the volume ratio of the added deionized water, ethanolamine, siloxane, organic acid and fatty alcohol polyoxyethylene ether is: (1-50): (1-30): (1-30): (1-35): (1-25).

[0057] It should be understood by those skilled in the art that the embodiments of the present invention shown in the above description are only examples and do not limit the present invention. The advantages of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A leveling liquid for wet leveling, characterized in that the structural formula of the leveling liquid for wet leveling is: in, R1 is any alkyl group of C10 to C14.

2. The leveling liquid for wet leveling according to claim 1, It is characterized in that In one embodiment, R1 is any alkyl group of C10-C12.

3. The leveling fluid for wet leveling according to claim 1, It is characterized in that In one embodiment, R1 is any alkyl group of C12 to C14.

4. A method for preparing a leveling fluid for wet leveling, It is characterized in that The method for preparing the leveling liquid for wet leveling comprises: Add a predetermined amount of deionized water; Then, adding a predetermined proportion of ethanolamine to the deionized water and stirring evenly to form an ethanolamine mixed solution; Add a predetermined amount of siloxane to the ethanolamine mixture and dissolve until the solution becomes clear and transparent; Then, a preset amount of organic acid and fatty alcohol polyoxyethylene ether is added to the clear liquid, and stirred until it becomes clear and transparent to prepare a leveling liquid for wet leveling, the structural formula of which is:

5. A method for preparing a leveling liquid for wet leveling according to claim 4, It is characterized in that The volume ratio of the added deionized water, ethanolamine, siloxane, organic acid and fatty alcohol polyoxyethylene ether is: (1-50): (1-30): (1-30): (1-35): (1-25).

6. A method for preparing a leveling liquid for wet leveling according to claim 4, It is characterized in that In one embodiment, R1 is any alkyl group of C10-C12.

7. A method for preparing a leveling liquid for wet leveling according to claim 4, It is characterized in that In one embodiment, R1 is any alkyl group of C12 to C14.

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