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A kind of superhydrophobic anticorrosion coating for marine concrete and preparation method thereof

A technology of marine concrete and anti-corrosion coatings, applied in anti-corrosion coatings, coatings, etc., can solve the problems of high durability and weather resistance and long-term anti-corrosion, poor adhesion of concrete substrates, insufficient superhydrophobic stability, etc., to prevent ultraviolet rays Effects of penetration, reduction of surface energy, and enhancement of mechanical properties

Active Publication Date: 2020-10-02
UNIV OF JINAN
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, there are few reports on superhydrophobic anticorrosion coatings suitable for marine concrete, and there are disadvantages such as poor adhesion to concrete substrates, low mechanical strength, poor anticorrosion performance, and insufficient superhydrophobic stability. As marine concrete protective coatings, existing Super-hydrophobic marine anti-corrosion coatings are difficult to meet the performance requirements of high durability, weather resistance and long-term anti-corrosion

Method used

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  • A kind of superhydrophobic anticorrosion coating for marine concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A super-hydrophobic anti-corrosion coating for marine concrete, which is prepared from the following raw materials in parts by weight: 70 parts of modified silicon-acrylic emulsion, 1.5 parts of ethyl orthosilicate, 5 parts of methyl triethoxysilane, 35 parts of ethanol and 0.8 parts of 2-amino-2-methyl-1-propanol and 8 parts of ammonia water.

[0026] Described modified silicone acrylic emulsion is made by following steps:

[0027] 1) Add 70 parts of micro-nano sericite powder to 75 parts of absolute ethanol, and ultrasonically disperse for 0.5 h to obtain an alcohol solution; dilute the silane coupling agent with 45 parts of distilled water and 8 parts of absolute ethanol, and stir evenly until The silane coupling agent is completely hydrolyzed to obtain the hydrolyzate of the silane coupling agent; add the alcohol solution and the hydrolyzate of the silane coupling agent to the flask, mix well, add 0.8 parts of oxalic acid and 0.8 parts of NaOH solution, the temperat...

Embodiment 2

[0039] A super-hydrophobic anti-corrosion coating for marine concrete, which is prepared from the following raw materials in parts by weight: 60 parts of modified silicone acrylic emulsion, 2 parts of ethyl orthosilicate, 6 parts of methyl triethoxysilane, 40 parts of ethanol and 0.5 parts of 2-amino-2-methyl-1-propanol and 10 parts of ammonia water.

[0040] Described modified silicone acrylic emulsion is made by following steps:

[0041] 1) Add 60 parts of micro-nano sericite powder to 80 parts of absolute ethanol, and disperse by ultrasonic wave for 0.5h to obtain an alcohol solution; dilute the silane coupling agent with 50 parts of distilled water and 5 parts of absolute ethanol, and stir evenly until The silane coupling agent is completely hydrolyzed to obtain the hydrolyzate of the silane coupling agent; add the alcohol solution and the hydrolyzate of the silane coupling agent to the flask, mix well, add 1 part of oxalic acid and 0.5 part of NaOH solution, the temperatu...

Embodiment 3

[0052] A super-hydrophobic anti-corrosion coating for marine concrete, which is prepared from the following raw materials in parts by weight: 80 parts of modified silicone acrylic emulsion, 1 part of ethyl orthosilicate, 4 parts of methyl triethoxysilane, 30 parts of ethanol 1 part and 1 part of 2-amino-2-methyl-1-propanol and 5 parts of ammonia water.

[0053] Described modified silicone acrylic emulsion is made by following steps:

[0054] 1) Add 80 parts of micro-nano sericite powder to 70 parts of absolute ethanol, and ultrasonically disperse for 0.5 h to obtain an alcohol solution; dilute the silane coupling agent with 40 parts of distilled water and 10 parts of absolute ethanol, and stir evenly until The silane coupling agent is completely hydrolyzed to obtain the hydrolyzate of the silane coupling agent; add the alcohol solution and the hydrolyzate of the silane coupling agent to the flask, mix well, add 0.5 part of oxalic acid and 1 part of NaOH solution, the temperatu...

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Abstract

The invention discloses a superhydrophobic anticorrosive coating for marine concrete, the superhydrophobic anticorrosive coating is prepared from the following raw materials by weight: 60-80 parts ofmodified silicon-acrylic emulsion, 1-2 parts of orthosilicate, 4-6 parts of methyltriethoxysilane, 30-40 parts of ethanol, 0.5-1 part of 2-amino-2-methyl-1-propanol and 5-10 parts of ammonia water. The invention also discloses a preparation method of the superhydrophobic anticorrosive paint for the marine concrete. The superhydrophobic anticorrosive paint for the marine concrete has the excellentperformances of long-lasting weather resistance and long-lasting corrosion resistance, and has broad market development prospects. The methyltriethoxysilane and the ethyl orthosilicate are hydrolyzedand polycondensed in the modified silicone-acrylic emulsion to form an inorganic network, and the organic-inorganic hybrid superhydrophobic anticorrosive coating can be obtained.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a superhydrophobic anticorrosion coating for marine concrete and a preparation method thereof. Background technique [0002] A superhydrophobic surface refers to a surface with a contact angle with water droplets greater than 150° and a roll angle less than 10°. Since the discovery of the "lotus leaf effect", superhydrophobic surfaces have been widely used in fields such as self-cleaning, anti-corrosion and anti-mildew, anti-icing and anti-frost, and oil-water separation. The ocean covers 4 / 5 of the earth, and my country has more than 3 million square kilometers of sea area. The development of marine resources can effectively alleviate the current shortage of resources. Seawater is the largest and highly corrosive natural electrolyte in nature. Seawater contains almost all chemical elements on the earth, and its composition is very complex. In addition, seawater a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/08C09D133/12C09D133/02C09D5/08C09D7/61C09D7/62C08F220/18C08F230/08C08F220/14C08F220/06
CPCC08F220/06C08F220/14C08F220/18C08F220/1804C09D5/08C09D7/61C09D7/62C09D143/04C08K9/06C08K3/34C08K3/36C08F230/08
Inventor 赵丕琪刘红花芦令超王守德黄世锋程新
Owner UNIV OF JINAN
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