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Shop primer curing agent

A shop primer and curing agent technology, applied in the direction of coating, etc., can solve the problems of poor anti-corrosion performance of coatings, poor thermal stability of primers, affecting coating anti-corrosion performance, etc., to achieve excellent anti-corrosion performance, strong stability, and excellent adhesion strength Effect

Active Publication Date: 2014-04-23
TIANJIN MEISHIBANG PAINT CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the shop primers currently used have poor thermal stability and insufficient weather resistance, resulting in instability of the coating after film formation, which greatly affects the anti-corrosion performance of the coating.
Especially when it is used for pretreatment of large steel components in oil tankers and offshore oil platforms, the poor anti-corrosion performance of the coating will cause greater damage to steel structures.

Method used

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  • Shop primer curing agent

Examples

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Effect test

Embodiment 1

[0019] A shop primer curing agent is made by the following preparation method:

[0020] Step 1: Add the two reaction liquids of ethyl silicate and absolute ethanol into the reaction kettle in turn, and stir for 5 minutes to obtain the mixed liquid A;

[0021] Step 2: Add distilled water, 2N hydrochloric acid, and absolute ethanol in sequence to the drip tank of the liquid dripping device for pre-mixing, set the flow controller in the liquid dripping device, and control the pre-mixed solution in the dripping device for 60 minutes Add it to the mixed solution A in the reaction kettle at a uniform speed; while setting the flow controller, set the lower limit position of the liquid level control sensor in the drip tank to test the drop of the liquid level in advance; When the liquid level drops to the preset lower limit position, the liquid level control sensor starts to emit sound and light alarm to remind the operator that step 2 is completed and they should quickly enter the ne...

Embodiment 2

[0025] A shop primer curing agent is made by the following preparation method:

[0026] Step 1: Add the two reaction liquids of ethyl silicate and absolute ethanol into the reaction kettle in turn, and stir for 10 minutes to obtain the mixed liquid A;

[0027] Step 2: Add distilled water, 2N hydrochloric acid, and absolute ethanol in sequence to the drip tank of the liquid dripping device for pre-mixing, set the flow controller in the liquid dripping device, and control the pre-mixed solution in the dripping device for 90 minutes Add it to the mixed solution A in the reaction kettle at a uniform speed; while setting the flow controller, set the lower limit position of the liquid level control sensor in the drip tank to test the drop of the liquid level in advance; When the liquid level drops to the preset lower limit position, the liquid level control sensor starts to emit sound and light alarm to remind the operator that step 2 is completed and they should quickly enter the n...

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Abstract

A disclosed shop primer curing agent is prepared by employing the following preparation method comprising the following steps: step 1, successively adding ethyl silicate and anhydrous ethanol into a reaction vessel, and stirring to obtain a mixed solution A; step 2, successively adding distilled water, 2 N hydrochloric acid and anhydrous ethanol into a liquid dropping pot of a liquid dropwise-adding device for pre-mixing, setting a flow controller in the liquid dropwise-adding device, and controlling the premixed solution in the dropwise-adding device to be uniformly added into the mixed solution A in the reaction vessel within 60-90 min; and step 3, after the step 2 is finished, successively adding heavy aromatics, anhydrous ethanol, 2-ethoxyethanol and ferric trichloride into the reaction vessel and stirring. Paint primer prepared from the curing agent prepared by employing the preparation method and a paint main agent has excellent adhesive strength, high-temperature resistance and weatherability, and a film formed by the primer is strong in stability and excellent in anti-corrosion property.

Description

technical field [0001] The invention belongs to the technical field of coatings, in particular to a curing agent for shop primers. Background technique [0002] The shop primer is the first paint applied after the surface treatment of the steel plate. It can also be called the pretreatment primer or the maintenance primer. Shop primer is one of the important varieties of marine coatings. When my country's shipbuilding industry and shipping industry are developing rapidly, the demand market for shop primer is very broad. In addition, other bridges, ocean engineering, etc. also need to process steel plate pretreatment of large steel structures, and they also have a great demand for shop primer. The past products include zinc phosphating primer, epoxy zinc-rich paint, epoxy iron red shop primer, and inorganic zinc silicate shop primer. Among them, inorganic zinc silicate primer is the main application variety, most of which are alcohol-soluble and self-curing, and are general...

Claims

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Application Information

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IPC IPC(8): C09D7/12
Inventor 于涛秦瑞
Owner TIANJIN MEISHIBANG PAINT CHEM IND
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