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Invasive weed compound corrosion inhibitor and preparing method and application thereof

A corrosion inhibitor and weed technology, applied in the field of materials, can solve problems such as equipment corrosion, operational errors, and environmental pollution, and achieve the effect of low cost and safe use

Inactive Publication Date: 2019-12-10
SOUTHWEST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the pickling corrosion inhibitors are aimed at the corrosion inhibition of a single acid species and a single metal. They have strong specificity and large difference in effect. Some of them have unstable chemical properties and need to be configured on site. The risk of equipment corrosion accidents is high, and most corrosion inhibitors have problems such as high price, high toxicity, and environmental pollution.

Method used

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  • Invasive weed compound corrosion inhibitor and preparing method and application thereof
  • Invasive weed compound corrosion inhibitor and preparing method and application thereof
  • Invasive weed compound corrosion inhibitor and preparing method and application thereof

Examples

Experimental program
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preparation example Construction

[0022] The specific operation of the preparation method of guayule extract of the present invention is as follows:

[0023] A. Pre-treatment: After collecting guayule, air-dry it and put it in a blast oven, dry it at a constant temperature of 60°C for 48-60 hours, take it out and cool it down to room temperature naturally, then pulverize it, the guayule powder with a particle size of 300-1000 μm ;

[0024] B. Extraction: Soak guayule inulin in 20~60% ethanol solution at room temperature (10~30°C) for 2~4h, solid-liquid ratio 1:20~40, then reflux in a water bath at 50~80°C for 2~ 6 hours;

[0025] C. Concentration: vacuum filter the ethanol extract obtained by reflux to remove the guayule residue powder contained therein, and then take it and concentrate the solution on a rotary evaporator at 40~80°C to 1 / 2~1 / 3 volumes;

[0026] D. Extraction: Add 2~5 times the volume of petroleum ether to the concentrated ethanol extract, shake it fully and let it stand for 12~48 hours, se...

Embodiment 1

[0032] ——Preparation of guayule extract

[0033] A. Pretreatment: After collecting guayule, air-dry it and put it in a blast oven, and dry it at a constant temperature of 60°C ~ 70°C for 60 ~ 72h, take it out, cool it down to room temperature and crush it, the silver colloid with a particle size of 150 ~ 2000 μm Inulin;

[0034] B. Extraction: Soak guayule inulin in 10~70% ethanol solution at room temperature (5~35°C) for 2~6 hours, solid-liquid ratio 1:25~50, then reflux in a water bath at 60~85°C for 3~ 9 h;

[0035] C. Concentration: Vacuum filter the ethanol extract obtained by reflux to remove the guayule residue powder contained therein, then take it and concentrate the solution on a rotary evaporator at 45~75°C to 1 / 4~1 / 2 volumes;

[0036] D. Extraction: Add 2~6 times the volume of petroleum ether to the concentrated ethanol extract, shake it fully and let it stand for 15~60 hours, separate the upper layer of petroleum ether from the lower layer of the extract, reco...

Embodiment 2

[0039] ——An Invasive Plant Compound Metal Corrosion Inhibitor

[0040] Take Example 1 guayule extract 0.10 g, ethylene group bis(octadecyldipolyvinyl chloride ammonium chloride) 0.5 g, OP-10 0.5 g, arabinose 0.1 g, add a volume of 1 The hydrochloric acid washing solution with a concentration of 0.5~5.0 mol / L in L is stirred evenly to obtain the target plant compound corrosion inhibitor.

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Abstract

The invention discloses an invasive weed compound corrosion inhibitor and a preparing method and application thereof. The invasive weed compound corrosion inhibitor comprises 0.1-1.0 g / L of guayule extracts, 0.05-0.5 g / L of a Gemini surface active agent, 0.1-0.5 g / L of a non-ionic surface active agent, 0.01-0.1 g / L of arabinose, and the balance acid-pickling liquid. According to the preparing method, various raw materials matched according to the formula are mixed and evenly stirred, and the target object invasive weed compound corrosion inhibitor is obtained. Application is the application ofthe invasive weed compound corrosion inhibitor to steel material acid pickling.

Description

technical field [0001] The invention belongs to the field of material technology, and in particular relates to a compound corrosion inhibitor for invasive weeds and its preparation method and application. Background technique [0002] Guayule (scientific name: Parthenium hysterophorus L.): annual herb. Stems erect, 0.6-1 m high, much branched, striate, pubescent, internodes 2.5-5 cm long. Lower and middle leaves bipinnately parted, full-shaped ovate or elliptic, pinnae ovate or oblong, often toothed; upper leaves sessile, pinnatifid, lobes linear-oblong, entire or with Teeth, middle lobe larger, usually 3 times longer than lateral lobe. There are many flower heads, 3-4 mm in diameter, arranged in corymbs at the top of the stem. Tongue flowers 1 layer, 5, white, about 1.3 mm long, ligules ovate or oval, with 2 lobes at the top. Tubular flowers numerous. Female flowers achene obovate, base acuminate, black when dry, apex truncated or sometimes serrate. The flowering peri...

Claims

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Application Information

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IPC IPC(8): C23G1/06C23G1/08
CPCC23G1/06C23G1/08C23G1/081C23G1/083
Inventor 李向红邓书端杜官本
Owner SOUTHWEST FORESTRY UNIVERSITY
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