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Solvent-free ultra-thick paste organic-inorganic hybrid nano-modified heavy-duty coating and preparation method thereof

A nano-modified, solvent-free technology, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of complex construction process and harsh curing conditions, achieve good construction performance, excellent adhesion, and save construction time and cost effects

Active Publication Date: 2020-06-19
洛阳双瑞防腐工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the curing process, it is necessary to inject hydrochloric acid atomized gas for 72 hours in an environment of 2-5°C to achieve the desired effect. The curing conditions are harsh and the construction process is more complicated.

Method used

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  • Solvent-free ultra-thick paste organic-inorganic hybrid nano-modified heavy-duty coating and preparation method thereof
  • Solvent-free ultra-thick paste organic-inorganic hybrid nano-modified heavy-duty coating and preparation method thereof
  • Solvent-free ultra-thick paste organic-inorganic hybrid nano-modified heavy-duty coating and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0049] A method for preparing a solvent-free ultra-thick organic-inorganic hybrid nano-modified heavy-duty anti-corrosion coating, specifically comprising the following steps:

[0050] Prepare Part A:

[0051] According to the parts by weight, weigh 70-80 parts of epoxy resin, 18-25 parts of reactive toughening agent, 2-5 parts of silane coupling agent, 0.5-2 parts of anti-settling agent, and 1-3 parts of defoaming agent , placed in a dispersing tank at a speed of 600-800r / min and dispersed for 15-20min, and filtered through a sieve to obtain component A;

[0052] Prepare Part B:

[0053] After the phenalkamine curing agent is filtered through a screen, component B is obtained;

[0054] Prepare component C:

[0055]The preparation method of the modified glass flakes is as follows: Add 200g of glass flakes into a dry flask containing 1.5L of anhydrous xylene, and at the same time add 0.15g of dimethyltin dilaurate, and disperse at room temperature for 40min at high speed to ...

Embodiment 1

[0061] Table 1 is the coating formula of embodiment 1

[0062]

[0063] A method for preparing a solvent-free ultra-thick organic-inorganic hybrid nano-modified heavy-duty anti-corrosion coating, comprising the following steps:

[0064] Step 1, preparation of component A:

[0065] Weigh 70 parts of epoxy resin, 25 parts of CYH-277 toughening agent, 3.5 parts of KH560 silane coupling agent, 0.5 parts of BEZ-75 anti-settling agent, 1 part of BYKA530 defoamer, and place them in a dispersion tank at 600-800r Disperse for 15 to 20 minutes at a rotating speed of 1 / min, and filter through a sieve to obtain component A, which will be used for later use;

[0066] Step 2, preparation of component B:

[0067] After the phenalkamine curing agent is filtered through a sieve, component B is prepared and set aside;

[0068] Step 3, preparation of component C:

[0069] The preparation method of the modified glass flakes is as follows: Add 200 g of glass flakes into a dry flask containi...

Embodiment 2

[0074] Table 2 is the coating formula of embodiment 2

[0075]

[0076] The preparation method of Example 2 is the same as that of Example 1, except that the specific materials and contents of each component are selected to be modified accordingly.

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Abstract

The invention relates to a solvent-free ultra-thick paste organic-inorganic hybrid nano-modified heavy-duty coating and a preparation method thereof, and belongs to the technical field of heavy-duty coatings. The nano-modified heavy-duty coating is prepared by mixing a component A, a component B and a component C according to a mass ratio of 100: (15-30): (80-300), wherein the component A is silane modified epoxy resin sol, the component B is a phenolic aldehyde amine curing agent, and the component C is nano modified composite inorganic powder. The thickness of a single-channel coating layerof the nano-modified heavy-duty coating can reach 500-1000 microns, and the nano-modified heavy-duty coating has excellent adhesion, wear resistance, seawater resistance and chemical corrosion resistance, has good compatibility with cathodic protection and can be widely applied to the field of corrosion protection in marine environments.

Description

technical field [0001] The invention belongs to the technical field of heavy-duty anti-corrosion coatings, and in particular relates to a solvent-free ultra-thick paste organic-inorganic hybrid nano-modified heavy-duty anti-corrosion coating and a preparation method thereof. Background technique [0002] In the prior art, epoxy coatings have become the main force of industrial anticorrosion coatings in my country. They have good corrosion resistance, chemical resistance, outstanding alkali resistance, and good thermal stability and electrical insulation. Therefore, they are widely used in the coating field. Wide range of applications. However, epoxy coatings are not acid-resistant, and they will age under sunlight for a long time. With the increasing pressure of environmental protection, solvent-based coatings are developing towards solvent-free coatings. [0003] At present, organic-inorganic hybrid materials have become a hot spot in research and development. Introducing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/62C09D7/61
CPCC09D163/00C09D5/08C09D7/62C09D7/61C09D7/70C08K2201/011C08K2201/014C08K13/06C08K3/36C08K3/34C08K9/04C08K7/00C08K3/40
Inventor 董翔刘翰锋徐飞鹏
Owner 洛阳双瑞防腐工程技术有限公司
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