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Synthesis of modified aqueous epoxy resin and method for preparing antiseptic rusty paint

A water-based epoxy resin and anti-corrosion tape technology, applied in anti-corrosion coatings, coatings and other directions, can solve the problems of the storage stability of the base resin and the water resistance and corrosion resistance of the water-based epoxy anti-corrosion coating film. Achieve the effect of satisfying storage stability, satisfying processing and use, and high physical and mechanical properties

Active Publication Date: 2010-07-14
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the storage stability of the base material resin and the water resistance and corrosion resistance of the water-based epoxy resin anti-corrosion coating film cannot be satisfied at the same time in the existing water-based epoxy resin anti-corrosion coating, the present invention provides a modified water-based epoxy coating. Synthesis of resin and preparation method of anticorrosion and rust coating

Method used

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  • Synthesis of modified aqueous epoxy resin and method for preparing antiseptic rusty paint
  • Synthesis of modified aqueous epoxy resin and method for preparing antiseptic rusty paint

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specific Embodiment approach 1

[0012] The specific embodiment one: the synthesis of the modified water-based epoxy resin of the present embodiment is realized according to the following steps: one, mix Span60 and Tween20 by mass ratio 1.3:1 to obtain a composite emulsifier; two, mix liquid by mass ratio 87:13 Add epoxy resin E-51 and compound emulsifier into a 500ml four-necked flask equipped with a thermometer, a stirring device and a reflux condenser, heat it in a water bath to 70°C, stir at a speed of 300r / min until it is evenly mixed, and add distilled water dropwise When the viscosity of the system is reduced from 500mPa.s to 300mPa.s, an epoxy resin emulsion is obtained; 3. Add the initiator and monomer dropwise to the epoxy resin emulsion, and react at 90°C for 3-4 hours to complete the modified water-based The synthesis of epoxy resin; wherein in step three, initiator is potassium persulfate, and the addition amount of initiator accounts for 0.1%~0.5% of monomer quality; In step three, monomer is α-m...

specific Embodiment approach 2

[0031] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the distilled water is added dropwise at a rate of 60-100 drops / min in step 2 until the viscosity of the system rises to 810mPa.s, and then 10-20 drops / min The speed of min is added dropwise until the viscosity of the system is reduced to 300mPa.s. Other steps and parameters are the same as those in Embodiment 1.

[0032] In this embodiment, the viscosity of the system rises to 810 mPa.s, which is a process close to phase inversion.

specific Embodiment approach 3

[0033] Specific embodiment three: the preparation method of the modified water-based epoxy resin anti-corrosion rust coating in this embodiment is realized according to the following steps: 1. Take 90-95 parts of modified water-based epoxy resin, 0.2-0.5 parts by mass and number of parts Corrosion inhibitor, 0.5-1 part of defoamer, 10 parts of anti-rust agent, 10 parts of curing agent and 5-10 parts of deionized water; 2. The modified water-based epoxy resin, corrosion inhibitor and anti-rust Mix the agent and stir evenly, then place it on a conical mill and grind it at a speed of 50-70r / min for 3 hours, then add the weighed defoamer, curing agent and deionized water, and stir evenly to obtain the modified water-based epoxy resin Resin anti-corrosion coating with rust; wherein in step 1, the corrosion inhibitor is sodium nitrite, the defoamer is tributyl phosphate, the rust inhibitor is medium chrome yellow, and the curing agent is diethylene triamine.

[0034] In this embodim...

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Abstract

The invention discloses synthesis of modified aqueous epoxy resin and a method for preparing antiseptic rusty paint, relating to synthesis of epoxy resin and a method for preparing paint. The invention solves the problems of the traditional aqueous epoxy resin antiseptic paint that storing stability of base material resin and water resistance and corrosion resistance of an aqueous epoxy resin antiseptic paint coating film can not be met simultaneously. the synthesis method of modified aqueous epoxy resin comprises the steps of: mixing Span 60 with Tween 20, adding E-51; heating and stirring, and dropwise adding distilled water till the system viscosity is suddenly reduced; and finally dropwise adding an initiating agent and a monomer to carry out heating reaction. The method for preparing antiseptic rusty paint comprises the steps of: mixing the modified aqueous epoxy resin, a corrosion inhibitor and a rust preventing agent, stirring and grinding; adding a defoaming agent, a curing agent and deionized water; and stirring the mixture to obtain the modified aqueous epoxy resin antiseptic rusty paint. The invention simultaneously meets the storing stability of the base material resin of the aqueous epoxy resin antiseptic paint and the water resistance and the corrosion resistance of the aqueous epoxy resin antiseptic paint coating film.

Description

technical field [0001] The invention relates to the synthesis of epoxy resin and the preparation method of the paint. Background technique [0002] In recent years, with the "green revolution" in the world, it has challenged the material industry and promoted the development of new materials in the direction of high efficiency, energy saving and eco-friendliness. In the field of coatings, water-based coatings have gradually become one of the substitutes for solvent-based coatings since they were researched and developed in the 1970s because of their outstanding advantages such as safety and low VOC (volatile organic compounds). With the development of industry, the application of water-based epoxy resin anti-corrosion coatings is becoming more and more widely. It has been successfully applied in the fields of marine corrosion environment, dipping corrosion environment and non-immersion environment. However, water-based epoxy resin anti-corrosion coatings are developing rapi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/10C09D151/08C09D5/08
Inventor 黄玉东张如良刘丽苏丹马悦欣刘青松
Owner HARBIN INST OF TECH
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