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Mixed silicon sol water inorganic zinc enriching paint

An inorganic zinc-rich coating and hybrid technology, applied in the direction of coating, can solve the problems of long silicate curing period, peeling, coating powdering, etc., to shorten the curing time, improve the early water resistance, and speed up the curing speed Effect

Inactive Publication Date: 2004-12-08
SHANGHAI MAMPLE NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, since the coating of the silicate waterborne inorganic zinc-rich coating contains alkali metal ions M + More, resulting in a longer curing period of the silicate, and during the curing period, the surface of the coating will form an alkali solution with a pH>12 when it encounters water. Too concentrated alkali solution will damage the structure of the silicate coating, such as Too early exposure to water will cause the coating to appear "powdering" and "shedding" and other disadvantages
In addition, although the salt spray resistance of silicate water-based inorganic zinc-rich coatings can reach 2800-5000 hours, which is equivalent to 14 to 25 years of anti-corrosion years, the anti-corrosion years of modern large-scale steel structure projects have reached 30 years. From 1950 to 50 years, so silicate coatings can no longer meet the actual needs of modern steel structure engineering

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Coating of the present invention is made up of solid material (A component) and liquid material (B component), and preparation modulus is 21.96M, the example that weight is 100kg coating:

[0057] 1. Preparation of component A:

[0058] Weigh 0.228kg modified sodium-based bentonite, 2.0527kg wollastonite (1250 mesh), 73.72kg zinc powder (325 mesh), and fully mix them in a forced stirring mixer for 10 minutes to become a solid (component A). Store in an airtight container.

[0059] 2. Preparation of component B:

[0060] 1. Prepare mixed silica sol:

[0061] (1) Weigh 14.52kg of silica sol (SiO 2 25.5%Na 2 (2) 0.3% pH 9.5 particle diameter 5.2nm) and 2.43kg deionized water are added in the reactor;

[0062] (2) Adjust the temperature of the reactor to 35°C to 40°C, and adjust the stirring speed until the solution appears vortex;

[0063] (3) Weigh 2.71kg lithium silicate (modulus 4.8M, SiO 2 20.0%, Li 2 (2.07%) sl...

Embodiment 2

[0085] The coating is composed of solid material (component A) and liquid material (component B), and the example of preparing a coating with a modulus of 28.10M and a weight of 100kg:

[0086] 1. Preparation of component A:

[0087] Weigh 0.228kg modified sodium-based bentonite, 2.0527kg wollastonite (1250 mesh), 73.72kg zinc powder (325 mesh), and fully mix them in a forced stirring mixer for 10 minutes to become a solid (component A). Store in an airtight container.

[0088] 2. Preparation of component B:

[0089] 1. Prepare mixed silica sol:

[0090] (1) Weigh 15.4kg of silica sol (SiO 2 25.5%, Na 2 (0.3%, pH9.5, particle diameter 5.2nm) and 2.49kg deionized water are added in the reactor;

[0091] (2) Adjust the temperature of the reactor to 35°C to 40°C, and adjust the stirring speed until the solution appears vortex;

[0092] (3) Weigh 2.38kg lithium silicate (modulus 4.8M, SiO 2 20.0%, Li 2 (2.07%) slowly add in the...

Embodiment 3

[0113] The coating is composed of solid material (component A) and liquid material (component B), and the example of preparing a coating with a modulus of 36.04M and a weight of 100kg:

[0114] 1. Preparation of component A:

[0115] Weigh 0.234kg modified sodium-based bentonite, 0.468kg ferrophosphorus powder (1000 mesh), 77.298kg zinc powder (500 mesh), and fully mix them in a forced stirring mixer for 10 minutes to become a solid material (component A). Store in an airtight container.

[0116] 2. Preparation of component B:

[0117] 1. Prepare mixed silica sol:

[0118] (1) Weigh 14.87kg of silica sol (SiO 2 25.5%Na 2 (2) 0.3% pH9.5 particle diameter 5.2nm) and 2.21kg deionized water are added in the reactor;

[0119] (2) Adjust the temperature of the reactor to 35°C to 40°C, and adjust the stirring speed until the solution appears vortex;

[0120] (3) Weigh 1.73kg lithium silicate (modulus 4.8M, SiO 2 20.0%, Li 2 (2.07%) slowly add in the solution in the reactor;...

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Abstract

An inorganic water paint rich in Zn for steel contains the component A prepared from Zn powder, thickening agent and filler and the component B prepared from mixed silicon sol, deposition resistant, emulsion, surfactant and assistant. Its advantages are high resistance to salt fog and ageing, low cost and no environmental pollution.

Description

technical field [0001] The invention relates to a zinc-rich paint, in particular to a water-based inorganic zinc-rich paint with silica sol as the main binder. Background technique [0002] Large-scale steel structure buildings and industrial facilities have high requirements on the anti-corrosion of steel, especially for some difficult-to-maintain engineering projects, requiring the use of long-term anti-corrosion coatings with decades of service life. As a kind of water-based inorganic zinc-rich coating applied in a relatively severe corrosive environment, it can have a longer-term protective effect than conventional coatings and has good corrosion resistance. It is safe, non-toxic, non-flammable and non-explosive, and has no pollution to the environment. , sanitation, environmental protection " this coating development direction, just getting more and more people's attention. Since the 1990s, the research on water-based inorganic zinc-rich coatings has been developing in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00
Inventor 林左峰
Owner SHANGHAI MAMPLE NEW MATERIAL
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