Steel-bar rust inhibitor based on radish extract, and preparation method and application thereof

A steel bar rust inhibitor and extractant technology, which is applied in the field of steel bar rust inhibitors, can solve the problems of low anti-rust efficiency of amino alcohol-type organic anti-rust agents, poisonous anti-rust effects to humans and the environment, and high cost of complex preparation, achieving excellent results. Antirust effect, simple preparation method and application method, avoiding the effect of complicated preparation process

Inactive Publication Date: 2019-01-29
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are often many problems to be solved in the existing rust inhibitors, such as strong oxidation anodic rust inhibitors represented by nitrite, although the rust inhibitor effect is remarkable, it is very har...

Method used

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  • Steel-bar rust inhibitor based on radish extract, and preparation method and application thereof
  • Steel-bar rust inhibitor based on radish extract, and preparation method and application thereof
  • Steel-bar rust inhibitor based on radish extract, and preparation method and application thereof

Examples

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Embodiment 1

[0023] A method for preparing a steel bar rust inhibitor based on a radish extract: specifically mixing the radish extract with an anti-corrosion additive, and stirring evenly to obtain the required steel bar rust inhibitor. In terms of mass percentage, the radish extract is 99.5%, The preservative additive is a sorbic acid preservative, and the consumption is 0.5%. Wherein the preparation method of radish extract extracting process is as follows, get the fresh radish of 30g mechanical crushing process, add the mass concentration of 200mL and be the phosphoric acid of 3% soak 4h, take supernatant and carry out filtration process through decompression filter device to obtain filtrate, pass through Distilled at 100°C for 4h to obtain the radish extract.

Embodiment 2

[0025] A method for preparing a steel bar rust inhibitor based on a radish extract: specifically mixing the radish extract with an anti-corrosion additive, and stirring evenly to obtain the required steel bar rust inhibitor. In terms of mass percentage, the radish extract is 99.9%, The preservative additive is sorbic acid preservative, and the consumption is 0.1%. The preparation method of the radish extract is the same as above, the difference is that the acid added is nitric acid with a mass concentration of 3%, the soaking time is 4h, and the distillation temperature is 120°C. The time is 4h.

Embodiment 3

[0027] A method for preparing a steel bar rust inhibitor based on a radish extract: specifically mixing the radish extract with an anti-corrosion additive, and stirring evenly to obtain the required steel bar rust inhibitor. In terms of mass percentage, the radish extract is 99.9%, The preservative additive is sorbic acid preservative, and the dosage is 0.1%. The preparation method of the radish extract is the same as above, the difference is that the acid added is phosphoric acid with a mass concentration of 3%, the soaking time is 8h, and the distillation temperature is 120°C. The time is 6h.

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Abstract

The invention discloses a steel-bar rust inhibitor based on a radish extract, and a preparation method and an application thereof. The steel-bar rust inhibitor comprises the following raw materials bymass: 98% to 100% of the radish extract and 0% to 2% of an anti-corrosion additive. Compared with the prior art, the steel-bar rust inhibitor provided by the invention has the following advantages: raw materials are green and environmentally-friendly, have low carbon and low cost, are widely-available and have high yield, so industrial production can be easily realized; the traditional disadvantages of pollution of nitrite to the environment and complicated preparation process of an organic rust inhibitor are avoided; rust-inhibiting components contained in a raw material namely the radish extract is utilized to generate interaction with a steel bar, so an adsorption film is formed on the surface of the steel bar, and direct erosion damage of chlorine ions to the steel bar is inhibited; the rust inhibitor prepared by using the method provided by the invention has excellent rust-inhibiting effect; and the steel-bar rust inhibitor has simple preparation method and application method andbroad prospects.

Description

technical field [0001] The invention relates to the field of rust inhibitors for steel bars, in particular to a rust inhibitor for steel bars based on radish extract, a preparation method and application. Background technique [0002] Reinforced concrete is an important engineering structure. In high-chloride salt environments such as coastal environments, winter deicing salts, and western saline-alkali lands, reinforced concrete faces the risk of corrosion and damage from chloride salts. Chloride ions migrate to the surface of steel bars through migration, penetration, convective diffusion, and capillary action through concrete pores. When the critical chloride ion concentration is reached, the corrosion reaction of steel bars is accelerated, and the resulting expansive corrosion products will cause internal stress in the structure. Crack along the tendons. Therefore, chloride corrosion damage and improving the service life of reinforced concrete structures are currently i...

Claims

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Application Information

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IPC IPC(8): C04B24/04C04B103/61
CPCC04B40/0039C04B2103/61C04B22/165C04B22/085C04B24/04C04B24/00
Inventor 蒋林华徐鹏郭明志陈晨储洪强
Owner HOHAI UNIV
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