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Preparation method of green high-adhesion waterborne anti-rust agent

A water-based anti-rust agent, green technology, applied in the coating process of metal materials, etc., can solve problems such as large environmental pollution, achieve the effects of enhancing adhesion, slowing down corrosion, and improving stability

Inactive Publication Date: 2018-09-07
SUZHOU JIEDERUI PRECISION MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the early water-based anti-rust agents mostly contained chromium, nitrite, phosphate and other substances. Although these anti-rust agents are low in cost and have good corrosion resistance, they are more polluting to the environment.

Method used

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  • Preparation method of green high-adhesion waterborne anti-rust agent

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Experimental program
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Effect test

Embodiment 1

[0014] A preparation method of a green high-adherence water-based antirust agent is characterized in that it comprises the following steps:

[0015] S1. Add ethylene glycol monobutyl ether and absolute ethanol to bisphenol A epoxy resin E-51, heat up to 80°C, stir to disperse the epoxy resin evenly, and then add alanine and phenylalanine Sodium hydroxide aqueous solution of acid composite modifier, control the reaction temperature to 90°C, and the reaction time to 60min to obtain a modified water-based epoxy resin, wherein the molar ratio of alanine:phenylalanine:epoxy resin is 1: 1.5:2;

[0016] S2. Take eucalyptus leaves and add them to 90wt% ethanol to dissolve them, soak them at room temperature for 2 hours, then bathe them in a constant temperature water bath at 75°C for 2 hours, use 90wt% ethanol solution to ultrasonically filter the residue for 0.5 hours, combine the two filtrates, rotary evaporate, add petroleum ether to degrease and decolorize, and concentrate Vacuum...

Embodiment 2

[0020] A preparation method of a green high-adherence water-based antirust agent is characterized in that it comprises the following steps:

[0021] S1. Add ethylene glycol monobutyl ether and absolute ethanol to bisphenol A epoxy resin E-51, heat up to 90°C, stir to disperse the epoxy resin evenly, then add alanine and phenylalanine Sodium hydroxide aqueous solution of acid composite modifier, control the reaction temperature to 90°C, and the reaction time to 120min to obtain a modified water-based epoxy resin, wherein the molar ratio of alanine:phenylalanine:epoxy resin is 2: 1:2;

[0022] S2. Take eucalyptus leaves and add them to 85wt% ethanol to dissolve them, soak them at room temperature for 4 hours, then soak them in a constant temperature water bath at 65°C for 2 hours, use 85wt% ethanol solution to ultrasonically filter the residue for 2 hours, combine the two filtrates, rotary evaporate, add petroleum ether to degrease and remove color, concentrate in a vacuum drie...

Embodiment 3

[0026] A preparation method of a green high-adherence water-based antirust agent is characterized in that it comprises the following steps:

[0027] S1. Add ethylene glycol monobutyl ether and absolute ethanol to bisphenol A epoxy resin E-51, heat up to 85°C, stir to disperse the epoxy resin evenly, and then add alanine and phenylalanine Sodium hydroxide aqueous solution of acid compound modifier, control reaction temperature to 90°C, reaction time to 90min, obtain modified water-based epoxy resin, wherein the molar ratio of alanine:phenylalanine:epoxy resin is 2: 1.5:2;

[0028] S2. Take eucalyptus leaves and add them to 85wt% ethanol to dissolve them, soak them at room temperature for 3 hours, then soak them in a constant temperature water bath at 65°C for 3 hours, use 85wt% ethanol solution to ultrasonically filter the residue for 2 hours, combine the two filtrates, rotary evaporate, add petroleum ether to degrease and remove color, concentrate in a vacuum dried into eucal...

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Abstract

The invention provides a preparation method of a green high-adhesion waterborne anti-rust agent. The preparation method comprises the following steps: S1, preparing modified waterborne epoxy resin; S2, preparing a folium eucalypti extract; S3, weighing components in parts by weight; S4, dissolving inositol hexaphosphate into ethanediol, thus obtaining a mixed solution; then continuously adding deionized water, the modified waterborne epoxy resin, sodium carboxymethyl cellulose, polyaspartic acid, a-D-gluconic acid, lauryl sodium sulfate, dimetyl-(4-(7-acetoxyl-coumarin))-methyl-(2-acryloyloxy)-ethyl-ammonium bromide, the folium eucalypti extract and octyl phenol polyoxyethylene ether, carrying out ultrasonic oscillation, and then regulating pH (Potential of Hydrogen). The green high-adhesion waterborne anti-rust agent prepared by the invention is economic and environment-friendly, is low in cost and safe and harmless in use and has a better anti-corrosion effect, the green high-adhesion waterborne anti-rust agent not only can be used for preventing rusting during manufacturing, but also can be used for preventing rusting during sealing storage, and a very good application prospectis obtained.

Description

technical field [0001] The invention relates to the field of antirust agents, in particular to a preparation method of a green high adhesion water-based antirust agent. Background technique [0002] Metal corrosion will not only cause huge economic losses, but sometimes even endanger people's personal safety. Therefore, the requirements for the corrosion resistance of metals are getting higher and higher. At present, the use of rust inhibitors is still one of the most common and effective methods to prevent metal corrosion. Commonly used antirust agents mainly include antirust oil and water-based antirust agent. Although anti-rust oil has a good anti-rust effect, people need to degrease first when using steel. With the enhancement of people's awareness of environmental protection and energy saving, the research on safe and environment-friendly water-based rust inhibitors has become a research hotspot in this field. Therefore, anti-rust oil is gradually replaced by water-...

Claims

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Application Information

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IPC IPC(8): C23C22/68C23C22/60
Inventor 姚振红
Owner SUZHOU JIEDERUI PRECISION MACHINERY
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