Surface rust prevention fluid for steel rail, and preparation and application methods thereof

A technology for anti-rust treatment and steel rails, applied in the direction of anti-corrosion coatings, coatings, etc., can solve the problems of long drying time, poor corrosion resistance, and environmental protection, etc., and achieve simple coating process, low cost, and low curing temperature Effect

Inactive Publication Date: 2013-09-25
PANZHIHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the existing short-term anti-rust oil or paint is not environmentally friendly, the coating process is complicated, the drying time is long, and the corrosion resistance is not good enough

Method used

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Examples

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Effect test

preparation example Construction

[0025] The present invention also provides a preparation method for the above-mentioned rail surface antirust treatment liquid, comprising the following steps:

[0026] a. Stir the silane and water at room temperature until the solution is uniform and stable;

[0027] b. Add water-soluble silicate and silica sol to the solution in step a, stir evenly, wait until the mixed solution is stirred until the pH value is in the range of 9-11, stop stirring, and the obtained solution is set aside;

[0028] c. Add the styrene-acrylic emulsion to the solution in step b, stir and disperse at a high speed of 1200-1500r / min for 10min-30min, and stir until the solution becomes a homogeneous phase;

[0029] d. Add distilled water or deionized water, make up the volume of the solution according to the composition of raw materials, and add defoaming agent to defoam, and finally obtain the antirust treatment solution.

[0030] Wherein, in the preparation method of the above-mentioned rail surfa...

Embodiment 1

[0040] Prepare 1L rail surface anti-rust treatment solution:

[0041] a. At normal temperature and pressure, weigh 150 g of KH792 and place it in a container, then add 40 g / L of water into the container, and stir at room temperature until the solution is uniform and stable.

[0042] b. Add 20g Na 2 SiO 3 9H 2 O in the solution in step a, then add 100 mL of silica sol, stir evenly, wait until the mixed solution is stirred until the pH value of the solution is within the range of 11, stop stirring, and the liquid is set aside.

[0043] c. Add 200mL of BLJ-816 styrene-acrylic emulsion into the solution in step b, and disperse at high speed (1200r / min) for more than 10min. Stir until the solution is homogeneous.

[0044] d. Finally, add deionized water to prepare the solution to 1L solution, and add 1mL of JF-1120 defoamer to defoam.

Embodiment 2

[0046] Prepare 1L rail surface anti-rust treatment solution:

[0047] a. At normal temperature and pressure, weigh 150 g of KH792 and place it in a container, then add 40 g / L of water into the container, and stir at room temperature until the solution is uniform and stable.

[0048] b. Add 30g Na 2 SiO 3 9H 2 O in the solution in step a, then add 100 mL of silica sol, stir evenly, wait until the mixed solution is stirred until the pH value of the solution is within the range of 11, stop stirring, and the liquid is set aside.

[0049] c. Add 200mL of BLJ-816 styrene-acrylic emulsion into the solution in step b, and disperse at high speed (1200r / min) for more than 10min. Stir until the solution is homogeneous.

[0050] d. Finally, add deionized water to prepare the solution to 1L solution, and add 1mL of JF-1120 defoamer to defoam.

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Abstract

The invention specifically relates to a surface rust prevention fluid for a steel rail and preparation and application methods thereof, belonging to the field of rust prevention for steel rails. Technical problems to be overcome in the invention are that a conventional short-time rust preventive oil or paint is not environment-friendly enough, a coating process for the conventional short-time rust preventive oil or paint is complex and the conventional short-time rust preventive oil or paint needs long drying time and does not have adequate corrosion resistance. A technical scheme to overcome the technical problems provides the surface rust prevention fluid for the steel rail. Raw materials for the fluid comprise 100 to 150 g/L of silane, 20 to 40 g/L of water-soluble silicate, 80 to 100 mL/L of a silica sol and 150 to 200 mL/L of a styrene-acrylic emulsion, with the balance being distilled water or deionized water. The invention further provides the preparation and application methods for the surface rust prevention fluid. The surface rust prevention fluid provided by the invention has the advantages of a simple coating process, low cost and good corrosion resistance and provides a new option for surface rust prevention of the steel rail.

Description

technical field [0001] The invention belongs to the field of rail anticorrosion, and in particular relates to a rail surface antirust treatment liquid and a preparation and use method thereof. technical background [0002] In the process of producing, storing and transporting steel rails, the steel rails directly react electrochemically with the external atmospheric environment and corrosive media in the environment, especially when they are waiting for ships in ports, shipped out and transported abroad by sea. With the corrosive medium Cl in seawater － 、Na ＋ , Mg 2＋ 、H 2 O violent oxidation-reduction reaction occurs, and serious red rust appears on the surface of the rail, which affects the international image and service life of rail products. There are patents and processing methods for coating zinc-rich primers, metal spray alloy coatings, etc. on the rail surface both internationally and domestically. For example, the CN1580315A patent of China provides a method for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D125/14C09D5/08C09D7/12
Inventor 刘姗邓俊邹敏朱学军
Owner PANZHIHUA UNIV
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