Novel antirust agent for marine machinery and method for preparing same

A rust inhibitor and marine technology, applied in the field of rust inhibitor, can solve the problems of strong corrosiveness, high salinity of sea water, and the service life of rust inhibitor cannot reach the service life, so as to improve the utilization rate, speed up the reaction speed, Anti-rust effect is remarkable

Active Publication Date: 2012-12-19
山东龙港硅业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, under marine climate conditions, seawater is highly saline and highly corrosive. Ships operating in the ocean and marine sand control units operating in deep sea, oil drilling platforms, floating docks, hoisting, hoisting machinery, transport vehicles, and sea containers have long suffered Seawater, high salt spray, high humidity and other marine climate corrosion, these marine machinery work in very harsh marine climate conditions, the above-mentioned anti-rust materials are difficult to resist its corrosion, especially the anti-corrosion of electroplated, bluish and black parts Rust, the service life of the existing anti-rust agent can not reach the ideal service life

Method used

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  • Novel antirust agent for marine machinery and method for preparing same

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Embodiment 1

[0050] The novel marine machinery antirust agent is prepared from the following raw materials in parts by weight:

[0051] Sodium metasilicate pentahydrate 200kg;

[0052] Polymerized alcohol amine 8kg;

[0053] Sodium borate 4kg;

[0054] Disodium edetate 6kg;

[0055] Sodium citrate 2kg.

[0056] The preparation steps of sodium metasilicate pentahydrate of the present embodiment comprise:

[0057] S1. Mix caustic soda, hollow microspheres and excess quartz sand, wherein the weight ratio of caustic soda to the hollow microspheres is 35:1, and then carry out liquid phase reaction at a temperature of 260°C and a pressure of 0.4MPa to prepare a solution ;

[0058] S2. The solution obtained in step S1 is filtered and refined, and the filtration pressure is maintained at 0.2 MPa to obtain a sodium silicate solution;

[0059] S3. Mix the sodium silicate solution obtained in step S2 with liquid caustic soda in a volume ratio of 2:1 and adjust the mold to prepare a sodium metas...

Embodiment 2

[0063] The novel marine machinery antirust agent is prepared from the following raw materials in parts by weight:

[0064] Sodium metasilicate pentahydrate 300kg;

[0065] Polymerized alcohol amine 11kg;

[0066] Sodium borate 5kg;

[0067] Disodium edetate 8kg;

[0068] Sodium citrate 4kg.

[0069] In the present embodiment, the preparation step of sodium metasilicate pentahydrate comprises:

[0070] S1. Mix caustic soda, hollow microspheres and excess quartz sand, wherein the weight ratio of caustic soda to the hollow microspheres is 39:1, and then carry out liquid phase reaction at a temperature of 310°C and a pressure of 0.45MPa to prepare a solution , the detailed process is: open the heat transfer oil of the reactor jacket to maintain the oiling temperature of 310°C; when the pressure just rises to 0.1MPa, open the pressure relief valve, discharge the cold air and continue the heating reaction; because the reaction between quartz sand and caustic soda is a During th...

Embodiment 3

[0076] The novel marine machinery antirust agent is prepared from the following raw materials in parts by weight:

[0077] Sodium metasilicate 400kg;

[0078] Polymerized alcohol amine 14kg;

[0079] Sodium borate 6kg;

[0080] Disodium edetate 10kg;

[0081] Sodium citrate 6kg.

[0082] In the present embodiment, the preparation step of sodium metasilicate pentahydrate comprises:

[0083] S1. Mix caustic soda, hollow microspheres and excess quartz sand, wherein the weight ratio of caustic soda to the hollow microspheres is 43:1, and then carry out liquid phase reaction at a temperature of 360°C and a pressure of 0.5MPa to prepare a solution , the detailed process is: open the heat transfer oil of the jacket of the reactor to keep the oiling temperature at 360°C; when the pressure just rises to 0.1MPa, open the pressure relief valve, discharge the cold air and continue the heating reaction; since the reaction between quartz sand and caustic soda is a During the exothermic...

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Abstract

The invention discloses a novel antirust agent for marine machinery, which is prepared from raw material which comprises the following components in parts by weight: 200-400 parts by weight of sodium metasilicate, 8-14 of polymeric alkylol amine, 4-6 of sodium borate, 6-10 of disodium ethylenediamine tetraacetate, 2-6 of sodium citrate. The novel antirust agent for marine machinery provided by the invention, which contains sodium metasilicate as the main ingredient and is cheap and environmental friendly, can form a dense film on the surface of marine machinery and has notable antirust effect, especially under serious marine conditions.

Description

technical field [0001] The invention relates to an antirust agent, in particular to an antirust agent used for antirust of marine machinery and a preparation method. Background technique [0002] Metal rust is a problem often encountered in production. Metal rust not only damages the shape, color and mechanical properties of the metal workpiece itself, but more importantly, it reduces the quality of its products, and even makes the product scrapped if it is particularly serious. , the iron and steel scrapped due to rusting reaches tens of millions of tons every year in the world, and the annual loss caused by rusting in my country reaches 4% of the gross national product. [0003] In addition, with the rise of emerging marine industries such as maritime transportation, deep-sea mining, port terminals, oil and gas development, and marine biotechnology, coupled with the significant increase in oil and gas exploration and production activities in deep-sea development in recent y...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/14
Inventor 王敬伟张福顺赵贝贝
Owner 山东龙港硅业科技有限公司
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