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Nanoclay modified epoxy micaceous iron oxide coating, and its preparing method

A technology of nano-clay and epoxy miracite, which is applied in the field of coatings, can solve the problems of high curing reaction temperature and difficult formation of exfoliated nanocomposites, and achieves low sinking, good corrosion resistance and permeability resistance, and stable storage good sex effect

Active Publication Date: 2008-10-01
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The present invention overcomes the two shortcomings of high curing reaction temperature and difficulty in forming exfoliated nanocomposites in the prior art, and provides a nano-clay modified epoxy micaceous iron that can be cured at room temperature Coating and its preparation method

Method used

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  • Nanoclay modified epoxy micaceous iron oxide coating, and its preparing method

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Experimental program
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Effect test

Embodiment 7-8

[0053] Embodiment 7-8 (content of different clays)

[0054] The preparation method of the montmorillonite treated by intercalation is the same as in Example 1. 180 g of intercalation-treated montmorillonite (hexadecylamine content of 20%) was added into 510 g of E44 epoxy resin and 110 g of toluene under stirring, and stirred for 30 minutes. Then add 200 g of 500 mesh mica iron oxide respectively. After being stirred evenly, component 1 of the nano-clay modified epoxy mica coating is prepared. Then mix with component two (50% 726 curing agent, solvent is toluene) by component one: component two=100:20, spray on the film surface, cure 20 hours respectively at 30 ℃, corresponding embodiment 7, paint The film thickness is 200±5μm; in addition, according to component 1: component 2 = 100:10, mix with component 2 (30% 726 curing agent, solvent is toluene), spray on the surface of the film, and cure at 30 ° C for 20 hours , corresponding to Example 8, the paint film thickness is ...

Embodiment 9

[0056] Add 80g of water to 20g of montmorillonite to prepare a 20% aqueous solution; then weigh 10g of octaamine to prepare an aqueous solution containing 5% of octaamine, mix the two solutions and react at 55°C for 36 hours. Centrifugal filtration, to the filtrate with 0.1N AgNO 3 Check until there is no white precipitate. After the product was dried, it was ground to 325 mesh particles.

[0057] 100 g of montmorillonite (wherein the content of octaamine is 12%) intercalated according to the above-mentioned method was added in 250 g of E20 epoxy resin and 550 g of cyclohexanone under stirring state, and stirred for 30 minutes. Then, 100 g of mica iron oxide of 500 meshes were added respectively. After being stirred evenly, component 1 of the nano-clay modified epoxy mica coating is prepared. Then mix component 1: component 2 = 100:25 with component 2 (50% SW-2 curing agent, solvent is toluene), spray on the surface of the film, and cure at 40°C for 20 hours. The paint fil...

Embodiment 10

[0059] Add 25g of montmorillonite to 75g of water to prepare a 25% aqueous solution; then weigh 10g of dodecyl ammonium chloride to prepare an aqueous solution containing 18% of dodecyl ammonium chloride, mix the two solutions and react at 85°C 3 hours. Centrifugal filtration, to the filtrate with 0.1N AgNO 3 Check until there is no white precipitate. After the product was dried, it was ground to 325 mesh particles.

[0060] 100 g of montmorillonite (wherein the content of dodecylamine is 17%) intercalated by the above-mentioned method was added in 250 g of E20 epoxy resin and 550 g of cyclohexanone under stirring state, and stirred for 30 minutes. Then, 100 g of mica iron oxide of 500 meshes were added respectively. After being stirred evenly, component 1 of the nano-clay modified epoxy mica coating is prepared. Then mix component 1: component 2 = 100:25 with component 2 (50% SW-2 curing agent, solvent is toluene), spray on the surface of the film, and cure at 40°C for 20...

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Abstract

This invention is related to coating technology specifically involving a kind of micaceous iron epoxy coating modified by nano clay and its preparation method concretely. The said coating is composed of epoxy resin, micaceous iron oxide, aliphatic amine, intercalating processed clay, phenolic aldehyde modified amide and so on. Its preparation method are as follows: 1) intercalating process of the clay; 2) adding the processed clay into the Epoxy Resin and solvents, mixing for 10~60 minutes; 3) putting micaceous iron oxide into the mixture prepared in 2), dispersing rapidly and uniformly, and then obtaining one composition of the said coating; 4) dissolving the curing agents with solvents to obtain the other composition, then adding the first composition into the second, curing the mixture under 10~120 deg.C conditions for 5 minutes to 15 days. The said coating obtained in this invention has better corrosion and permeability resistance.

Description

technical field [0001] The invention relates to coating technology, in particular to a nano-clay modified epoxy mica coating and a preparation method thereof. Background technique [0002] Mica iron oxide is a chemically stable flake-shaped physical anti-rust pigment. In the anti-rust paint, the micaceous iron oxide has good water and gas penetration resistance and good weather resistance due to the overlapping and stacking of flakes. The antirust paint made of mica iron oxide is used on steel surfaces in marine atmospheres and warm areas of ships, bridges, chemical equipment, etc., and has excellent antirust effects. [0003] For example, Chinese patent CN86104711 (disclosure date 1988.2.3) discloses epoxy-chlorinated chloroprene rubber dry and wet dual-purpose coating, is to take epoxy modified chlorinated chloroprene rubber as the main adhesive, cyclohexanone-acetic acid Butyl ester is used as a solvent, magnetic iron oxide, mica iron oxide, red lead, etc. are used as a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/04
Inventor 刘福春韩恩厚柯伟
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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