Modified water-based inorganic zinc rich coating and preparation method thereof

A technology of inorganic zinc-rich coatings and modified water, which is applied in the direction of anti-corrosion coatings, alkali metal silicate coatings, alkali metal silicate, etc., and can solve poor wear resistance, coating peeling, and ethyl silicate coatings Insufficient curing and other problems to achieve the effect of improving stability and functionality

Active Publication Date: 2013-09-18
JIUQING PAINT SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 5. Abrasion resistance. Generally, inorganic coatings are hard and wear-resistant, but ethyl silicate coatings are not fully cured in wet and dry environments and have poor wear resistance;
[0011] 9. Disadvantages: (1) The inorganic base material is brittle, and the generally prepared zinc-rich coatings are not suitable for use on thin and easily deformable substrates, and the coating will peel off in a large area under the action of external force;
[0012] (2) The construction performance is not as good as that of the organic model, and the requirements for the surface treatment of the substrate are strict

Method used

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  • Modified water-based inorganic zinc rich coating and preparation method thereof
  • Modified water-based inorganic zinc rich coating and preparation method thereof
  • Modified water-based inorganic zinc rich coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] A, preparation of inorganic lithium silicate binder

[0064]

[0065]

[0066] Preparation:

[0067] The first step: the preparation of lithium silicate:

[0068] Put the deionized water in the stirred tank, add lithium hydroxide and stabilizer under the stirring condition of 80-90rpm, stir for 10-15min, then quickly add the silica sol under the high-speed stirring of 900-1400rpm, and the reaction temperature is 40-45 ℃, after high-speed dispersion for 5 hours, stop stirring and react in a static state for 96-120 hours, it is transparent and ready for use;

[0069] The second step: the preparation of lithium silicate binder:

[0070] Add the silica sol in the binder into the stirring tank, add lithium silicate, modified adhesive, tackifier, defoamer and preservative under the stirring condition of 80-90rpm, and stir at room temperature for 30-60min , the sampling test pH value is 11, and filtering to obtain a modified inorganic lithium silicate binder.

[0071...

Embodiment 2

[0076] A, preparation of inorganic lithium silicate binder

[0077]

[0078]

[0079] Preparation:

[0080] The first step: the preparation of lithium silicate:

[0081] Put the deionized water in the stirred tank, add lithium hydroxide and stabilizer under the stirring condition of 80-90rpm, stir for 10-15min, then quickly add the silica sol under the high-speed stirring of 900-1400rpm, and the reaction temperature is 40-45 ℃, after high-speed dispersion for 5 hours, stop stirring and react in a static state for 96-120 hours, then use;

[0082] The second step: the preparation of lithium silicate binder:

[0083] Add the silica sol in the binder into the stirring tank, add lithium silicate, modified adhesive, tackifier, defoamer and preservative under the stirring condition of 80-90rpm, and stir at room temperature for 30-60min , the sampling test pH value is 11, and filtering to obtain a modified inorganic lithium silicate binder.

[0084] B. Preparation of modifie...

Embodiment 3

[0089] A, preparation of inorganic lithium silicate binder

[0090]

[0091]

[0092] Preparation:

[0093] The first step: the preparation of lithium silicate:

[0094] Put the deionized water in the stirred tank, add lithium hydroxide and stabilizer under the stirring condition of 80-90rpm, stir for 10-15min, then quickly add the silica sol under the high-speed stirring of 900-1400rpm, and the reaction temperature is 40-45 ℃, after high-speed dispersion for 5 hours, stop stirring and react in a static state for 96-120 hours, then use;

[0095] The second step: the preparation of lithium silicate binder:

[0096] Add the silica sol in the binder into the stirring tank, add lithium silicate, modified adhesive, tackifier, defoamer and preservative under the stirring condition of 80-90rpm, and stir at room temperature for 30-60min , the sampling test pH value is 11, and filtering to obtain a modified inorganic lithium silicate binder.

[0097] B. Preparation of water-b...

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Abstract

The invention relates to a modified water-based inorganic zinc rich coating and preparation thereof. The modified water-based inorganic zinc rich coating is produced by mixing a composite powder with a water-based inorganic binder in a weight ratio of (65-75): (35-25), wherein the composite powder comprises 40-70 parts of metal zinc powder, 3-15 parts of composite iron-titanium powder and 0-15 parts of an antirust agent; the water-based inorganic binder is a lithium silicate binder and comprises 10-25 parts of lithium silicate binder, 60-75 parts of silica sol, 10-15 parts of modified binder and 0.6-3 parts of other auxiliaries; and the modified binder is organic fluorine and / or an organic silicon modified acrylic emulsion. The water-based inorganic lithium silicate binder is used as the base stock of the modified water-based inorganic zinc rich coating, so that the coating is quick in air-drying, nontoxic, tasteless and non-combustible, and has excellent abrasive resistance, flexibility, impact resistance, bending resistance, high / low temperature resistance, electric welding resistance and chemical corrosion resistance, as well as high binding strength, resistance to heat and humidity, salt water resistance and long salt fog resistance time; therefore, the coating is suitable for various building steel structure as a heavy corrosion protective primer, and also can be used as a paint for closure of thermally sprayed zinc, thermally sprayed aluminium anticorrosion layers.

Description

technical field [0001] The invention relates to the field of inorganic zinc powder coatings, in particular to a modified water-based inorganic zinc-rich heavy-duty anti-corrosion coating and a preparation method thereof. Background technique [0002] Water-based inorganic zinc-rich coatings are mainly based on inorganic silicate (sodium, potassium, lithium) and metal zinc powder as filler to make two-component water-based inorganic zinc-rich coatings. It has a development history of more than 50 years and has a good anti-corrosion effect. It is still one of the most important heavy-duty anti-corrosion coatings. It is widely used in steel structures exposed to various environments such as the atmosphere, ocean, and high temperature. long-term protection. Waterborne inorganic zinc-rich coatings have the following characteristics: [0003] 1. Non-toxic, odorless, non-flammable, and free of organic volatiles, it is an energy-saving and environmentally friendly product; [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/04C09D5/10C01B33/32
Inventor 马保萍陈安仁席志宏史瑞瑾
Owner JIUQING PAINT SHANGHAI
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