Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of environment-friendly high-efficiency corrosion inhibitor and its preparation method and application

A corrosion inhibitor and high-efficiency technology, applied in the field of environmental protection and high-efficiency corrosion inhibitor and its preparation, can solve the problems of high cost, carcinogenicity, poor water solubility, etc., and achieve the effect of low cost and safe use

Inactive Publication Date: 2015-12-30
SOUTHWEST FORESTRY UNIVERSITY
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Satisfactory inorganic salt corrosion inhibitors were developed before the 1980s: chromate, nitrite, mercury salt, arsenic compound, but because these inorganic salts can cause cancer and pollute the environment, their application is limited
However, the cost of this type of organic corrosion inhibitors is high and their water solubility is poor, especially the discharge of organic phosphorus corrosion inhibitors will cause water eutrophication, which seriously hinders the development and application of corrosion inhibitors

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of environment-friendly high-efficiency corrosion inhibitor and its preparation method and application
  • A kind of environment-friendly high-efficiency corrosion inhibitor and its preparation method and application
  • A kind of environment-friendly high-efficiency corrosion inhibitor and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0018] The preparation method of the environment-friendly high-efficiency corrosion inhibitor of the present invention includes raw material preparation and preparation steps, specifically including:

[0019] A, raw material preparation: prepare bamboo leaf extract for subsequent use, prepare pickling solution, allylthiourea, Tween, quaternary ammonium salt, sodium iodide for subsequent use;

[0020] B. Preparation: Add bamboo leaf extract, allylthiourea, Tween, quaternary ammonium salt, and sodium iodide into the pickling solution according to the ratio of raw materials, stir and mix evenly to obtain the target product.

[0021] Described preparation bamboo leaf extract comprises the following steps:

[0022] A. Pre-treatment: After the bamboo leaves are collected, remove the surface impurities, rinse with water to remove the dust on the leaf surface, drain the surface water, air-dry them, put them in a blast oven, dry them at a constant temperature of 50-70°C for 36-60 hours...

Embodiment 1

[0037] Embodiment 1 - the preparation of bamboo leaf extract

[0038] The bamboo leaf corrosion inhibitor is prepared by extracting golden bamboo leaves, wherein:

[0039] a. After the bamboo leaves are collected, remove the surface impurities, rinse with water to remove the dust on the leaf surface, drain a large amount of water, air-dry them, put them in a blast oven, dry them at 70oC for two days and nights, take them out and cool them down to room temperature, and then crush them. The particle size is about 350μm;

[0040] b. Take a certain amount of bamboo leaf powder, add a certain volume of ethanol solution (volume fraction: 20%-80%) (solid-liquid ratio: 1:25), soak at room temperature for 2 hours, and then reflux extraction in a water bath at 80oC for 1.5 hours;

[0041]c. vacuum filter the refluxing ethanol extract to remove the bamboo leaf powder contained therein, and then use 70°C to rotate the solution on a rotary evaporator;

[0042] d Transfer the liquid conce...

Embodiment 2

[0044] Embodiment 2 - the preparation of bamboo leaf extract

[0045] The bamboo leaf extract is prepared from purple bamboo leaves, wherein:

[0046] a. After the bamboo leaves are collected, remove the surface impurities, rinse with water to remove the dust on the surface of the leaves, drain off a large amount of water and air-dry them, then put them in a blast oven, dry them at a constant temperature of 80oC for two days and nights, take them out and cool them naturally to room temperature, and then crush them. The particle size is about 350μm;

[0047] b. Take a certain amount of bamboo leaf powder, add a certain volume of ethanol solution (20%-80% by volume) (solid-liquid ratio: 1:25), soak at room temperature for 1 hour, and then reflux extraction in a water bath at 60°C for 2 hours ;

[0048] c. vacuum filter the refluxing ethanol extract to remove the bamboo leaf powder contained therein, and then use 70°C to rotate the solution on a rotary evaporator;

[0049] d. ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses an environment-friendly and high-efficiency corrosion inhibitor and its preparation method and application. The environment-friendly and high-efficiency corrosion inhibitor includes bamboo leaf extract 0.1-2g / L, allyl thiourea 0.05-0.1g / L, spit Temperature 0.01~0.05g / L, quaternary ammonium salt 0.1~0.2g / L, sodium iodide 0.01~0.05g / L, and the balance is pickling solution. The method includes raw material preparation and preparation steps; the application is the application of the environment-friendly and high-efficiency corrosion inhibitor in the preparation of steel, aluminum, petrochemical equipment, filtration, and pipeline cleaning agents. The invention is based on bamboo leaf extract and allyl thiourea, adding surfactant Tween, quaternary ammonium salt, auxiliary agent sodium iodide, and the pickling corrosion inhibitor prepared by the remaining amount of pickling liquid has synergistic effect effect. The invention has the advantages of non-toxicity, low cost, strong adaptability and obviously inhibits the corrosion effect of acid on metal materials, can be applied to pickling steel and aluminum in inorganic acid and organic acid, and can be applied to petrochemical equipment, boilers and pipelines The corrosion inhibitor of the present invention has no pollution after use, and is safe and convenient to use.

Description

technical field [0001] The invention belongs to the technical field of metal corrosion inhibitors, and in particular relates to an environment-friendly and high-efficiency corrosion inhibitor and its preparation method and application. Background technique [0002] Metal materials occupy a very important position in modern industry and agriculture, machinery, transportation, national defense and science and technology. Steel has the advantages of low price, good machining performance, and large output. It is the first metal to be considered in the process of material selection and use, and it is also one of the most widely used metals at present. However, metal materials are extremely prone to corrosion, and the damage is very serious. It is estimated that the amount of iron and steel scrapped due to corrosion is equivalent to 1 / 4-1 / 3 of the annual output in the world every year; the annual loss caused by corrosion accounts for 3.1%-4.5% of the gross domestic product (GDP)....

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C23G1/06
Inventor 李向红邓书端付惠刘祥义
Owner SOUTHWEST FORESTRY UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com