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A kind of nano-toughened inorganic zinc-rich coating and preparation method thereof

An inorganic zinc-rich coating and toughening technology, used in anti-corrosion coatings, coatings, etc., can solve problems such as easy cracking, poor coating flexibility, limited use, etc., to reduce porosity, overcome poor toughness, and improve anti- Effects of Corrosive Properties

Active Publication Date: 2020-04-14
CNOOC CHANGZHOU PAINT & COATINGS IND RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, commercially available inorganic zinc-rich coatings simply use ethyl silicate hydrolyzate as the film-forming substance, and the coating has poor flexibility. When the coating exceeds 100 μm, it is very prone to cracking and even peeling.
It is also for this reason that the use of traditional inorganic zinc-rich paints on special-shaped workpieces is limited

Method used

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  • A kind of nano-toughened inorganic zinc-rich coating and preparation method thereof
  • A kind of nano-toughened inorganic zinc-rich coating and preparation method thereof
  • A kind of nano-toughened inorganic zinc-rich coating and preparation method thereof

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preparation example Construction

[0031] The present invention also includes a preparation method of nano-toughened inorganic zinc-rich coating, comprising:

[0032] S101. Preparation of raw materials: prepare the raw materials in component A, component B and component C respectively;

[0033] S102. Preparation of component A: According to the proportion in component A, add ethanol, isopropanol, propylene glycol methyl ether and cellulose thickener into the container, stir until it becomes a transparent liquid, add filler, and stir for 10-20 minutes Finally, grind at a high speed in a grinder, disperse to a fineness of ≤80 μm, then add tetraethyl orthosilicate prepolymer and flexible silicone nano-toughening particles, continue stirring for 30 minutes, and filter the material to obtain component A;

[0034] S103. Preparation of component C: According to the proportion in component C, add isopropanol and propylene glycol methyl ether into the container, gradually add polyvinyl butyral toughening resin under sti...

Embodiment 1

[0038] Preparation of nano-toughened inorganic zinc-rich coating T-1

[0039] 1) Component A raw material preparation and preparation

[0040]Prepare the raw materials required for component A, wherein the flexible organosilicon nano-toughening particles are formed by the hydrolysis and condensation of the organosilicon toughening precursor Flex-1; the specific synthesis method is: first add 300g of ethanol or isopropanol to the reaction vessel , 60g of acetic acid aqueous solution with a pH value of 4 to 5, then add 300g of silicone toughening precursor Flex-1, stir at room temperature for 0.5h, and stir at 70°C for 3h to obtain flexible silicone nano toughened particles solution, the average particle diameter of flexible organosilicon nano-toughening particles is 5nm;

[0041] Table 1.1, Raw material ratio in component A

[0042]

[0043] According to the ratio of component A in the above table 1.1, add ethanol, isopropanol, propylene glycol methyl ether and cellulose t...

Embodiment 2

[0053] Preparation of nano-toughened inorganic zinc-rich coating T-2

[0054] 1) Component A raw material preparation and preparation

[0055] Prepare the raw materials required for component A, wherein the flexible organosilicon nano-toughening particles are formed by the hydrolysis and condensation of the organosilicon toughening precursor Flex-1; the specific synthesis method is: first add 200g of ethanol or isopropanol to the reaction vessel , 37.5g of sulfuric acid aqueous solution with a pH value of 4 to 5, then add 300g of silicone toughening precursor Flex-2, stir at room temperature for 0.5h, then stir and react at 70°C for 1h to obtain flexible silicone nano-toughened Particle solution, the average particle size of flexible silicone nano-toughened particles is 10nm;

[0056] Table 2.1, Raw material ratio in component A

[0057]

[0058] According to the ratio of component A in the above table 2.1, add ethanol, isopropanol, propylene glycol methyl ether, and cell...

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Abstract

The invention discloses nanometer toughened inorganic zinc-rich paint. The paint is prepared by mixing a component A, a component B and a component C; the component A is prepared by the following rawmaterials: 8.0-20% of a tetraethyl orthosilicate performed polymer, 3-10% of a flexible organosilicon nanometer toughened particle, 18.0-26.0% of a filling material, 2.0-4.0% of a cellulose thickeningagent, 10.0-20.0% of isopropanol, 12.0-20.0% of 1-methoxy-2-propanol, and 12.0-20.0% of ethanol. The component B is zinc dust; the component C is prepared by the following raw materials: 1.0-10.0% ofpolyvinyl butyral toughened resin, 3.6-10.0% of a siloxane coupling agent, 25.0-50.0% of 1-methoxy-2-propanol, and 30.0-60.0% of isopropanol. The thickness of dry film of the paint can reach 200[mu]mwithout cracking.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a nano-toughened inorganic zinc-rich coating and a preparation method thereof. Background technique [0002] Corrosion brings huge losses to the national economy. Among various anti-corrosion measures, coating anti-corrosion coatings is the most effective, most economical and most widely used method. Among the existing products, alcohol-soluble inorganic zinc-rich coatings use tetraethyl orthosilicate prepolymer as a film-forming substance, and form dense iron-zinc silicate through multiple cross-linking reactions with metal zinc powder and iron atoms on the surface of the substrate. The complex is tightly covered on the surface of steel, and plays an excellent protective role on steel through the electrochemical protection and chemical anti-corrosion effect of zinc powder. It has the advantages of good anti-corrosion performance, heat resistance, and antistatic. [0003] Academician Cao...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00C09D5/10C09D7/65C09D7/61C09D7/63
CPCC09D1/00C09D5/106
Inventor 陈子辉倪维良林家祥刘仲阳朱亚君郭亮亮王留方
Owner CNOOC CHANGZHOU PAINT & COATINGS IND RES INST
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