Anticorrosion composite nano paint and its preparing process

A nano-composite, heavy-duty anti-corrosion technology, applied in the direction of coating, etc., can solve the problem of unsatisfactory coating protection effect

Inactive Publication Date: 2002-05-01
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved in the present invention is to disclose a nanocomposite coating for heavy anticorrosion and its preparation method. The nanocomposite coating has good corrosion resistance and outstanding comprehensive mechanical properties such as hardness, strength and toughness, and can be used for valves, The protection of components such as elbows and impellers, to overcome the shortcomings of the previous coating protection effect is not very ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Get 150 grams of 30% hydrochloric acid, add 14.1 grams of polyvinylpyrrolidone, and add

[0031] The sodium silicate (modulus is 3.0~3.4) of 400 grams 40 ° Be ', makes SiO 2 Sol, dilute with NaOH

[0032] The solution was adjusted to pH=9.

[0033] (2) 200 grams of PPS and 60 grams of FEP micropowder are mixed, and 490 grams of dispersion liquid (by 235.2

[0034] gram of deionized water, 9.8 grams of dispersant T and 245 grams of isopropanol), ball milled on a ball mill for 16

[0035] hour, the emulsion was obtained.

[0036] (3) Get 250 grams of the sol obtained in step (1), and add it to the emulsion obtained in step (2) while stirring

[0037] In the preparation of nanocomposite coatings.

[0038]

[0039] Table 1

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PUM

PropertyMeasurementUnit
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Abstract

An anticorrosion composite nano-paint contains film forming agent, dispersing liquid, antisticking agent and SiO2 colloid, where the granularity of SiO2 is 10-20 nm. Its coated layer is characterized by high hardness, adhesion and toughness, and excellent corrosion and abrasion resistance.

Description

technical field [0001] The invention relates to a nanocomposite coating for heavy anticorrosion. Background technique [0002] In the turbulent corrosion caused by droplets, jets, and particles in various acids, alkalis, salts, chlorobenzenes, etc., in addition to the corrosion of the medium and the high flow rate of the fluid, there are also liquid or solid particles on the metal surface. The mechanical damage caused by the impact is generally called erosion (also known as impact corrosion). The radial flow of liquid droplets or jets or the passing of solid particles on the surface of the material also generate shear stress on the surface of the material. However, the shear stress caused by radial flow on a smooth surface is much lower than the impact stress, so it has no effect on the corrosion of the material. However, in corrosive media, the radial shear stress is sufficient to crack or peel off the surface film, exposing a fresh surface. Erosion generally occurs at e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D181/02
Inventor 张而耕王志文刘桂玲郝俊文
Owner EAST CHINA UNIV OF SCI & TECH
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