Odorless water-based coating produced from slag micro-powder, and preparation method thereof

A water-based paint and micropowder technology, applied in antifouling/underwater paints, biocide-containing paints, coatings, etc., can solve problems such as hazards and dust pollution, achieve extremely low VOC, reduce VOC emissions, and improve environmental protection performance effect

Inactive Publication Date: 2020-09-18

SHANXI ZHONGYANG IRON & STEEL

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AI-Extracted Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of water-based paint with clean taste produced by slag micropowder an...

Method used

(4) in the solution B obtained, slowly add solid powders such as slag micropowder, titanium dioxide, talcum powder, mica powder under stirring state, avoid agglomeration, as granularity is greater than 50 μ m, need to grind, obtain solution C ;

(4) in the solution B obtained, slowly add solid powders such as slag micropowder, titanium dioxide, talcum powder, mica powder under stirring state, avoid agglomeration, as particle size is greater than 50 μ m, need to grind, obtain solution C ;

As can be seen from the table, the construction performance of the present invention meets the requirement with reference to the national standard, and various indexes are all better than the national standard requirement, and the performance is excellent; the present invention itself has weak alkalinity, is not easy to breed bacterial colony, and storage stability is very good; After the product is painted, a chemical reaction occurs on the wall to form...

Abstract

The invention discloses an odorless water-based coating produced by using slag micro-powder, and a preparation method thereof. The preparation method comprises the following steps: adding water into areaction kettle, adjusting the rotating speed of the reaction kettle to 500 to 600 r/min, slowly adding hydroxyethyl cellulose in a stirring state, dispersing for 5 to 10 minutes to form a glue form,adding auxiliary agents such as a dispersing agent and a defoaming agent 5 to 10 minutes later, stirring for 5-10 minutes, then adding slag micro-powder, titanium dioxide, talcum powder, ground calcium carbonate powder and the like into a solution, stirring for 20 to 40 minutes to reduce the fineness of the coating to 50 [mu]m or less, grinding to below 50 [mu]m or less for the next step of operation if the fineness is too high , reducing the rotating speed to 500 r/min, adding an emulsion, a defoaming agent and the like, adding auxiliary agents such as an odor-free emulsion, a coalescing agent and the like, adding a certain amount of pigment to adjust the system to the required color, and adjusting the viscosity of the system to 75-110 KU by using alkali swelling or a polyurethane thickener. No dust pollution or air pollution is ensured in the construction process, and the performance is excellent.

Application Domain

Antifouling/underwater paintsPaints with biocides

Technology Topic

EmulsionAir contamination +9

Image

Examples

Experimental program(4)

Example Embodiment

[0036] Example 1

[0037] A preparation equipment for pure water-based paint produced by using slag powder, including a reaction kettle, adding water to the reaction kettle, adjusting the speed of the reaction kettle to 500-600r/min, slowly adding hydroxyethyl cellulose to disperse 5-10 under agitation After 5-10 minutes, add dispersant, defoamer and other additives, stir for 5-10 minutes, then add slag powder, titanium dioxide, talcum powder, heavy calcium powder, etc. into the solution, stir After 20-40 minutes, the paint fineness drops to below 50μm. If the fineness is too high, you need to grind to below 50μm and proceed to the next step. Reduce the speed to 500 rpm, add emulsion, defoamer, etc., and pass the clean odor emulsion Add a certain amount of pigments to adjust the system to the desired color, and adjust the viscosity of the system to 75-110KU using alkali swelling or polyurethane thickeners.

[0038] Slag powder is a network structure composed of silicon-oxygen tetrahedrons with different polymerization degrees. Calcium, magnesium, and aluminum plasma are distributed in the cavities of the network structure. The network structures are interspersed with each other to form a stable spatial structure. Its glass body The structure has general elastic deformation, the system viscosity is very large, free calcium, magnesium, and aluminum ions are present in the slag powder, which has a certain activity. During the process of combining with water, the whole system is alkaline, and the pH is about 9.5.

[0039] There is no need to add pH regulators such as AMP-95 and ammonia water which are harmful to the human body in the system, which is conducive to the adjustment of coating viscosity and storage stability; due to its weak alkaline environment, it is not conducive to the growth of mold, so it is not necessary in the system The addition of fungicides greatly reduces VOC emissions; through the combination of different meshes of powder, the gap between the titanium dioxide is filled and the hiding power is improved.

[0040] The fineness D50 of slag powder is less than or equal to 27μm, and the sieving rate of 45μm should be greater than 0.01%.

[0041] The titanium dioxide is rutile titanium dioxide with a whiteness greater than 90%.

[0042] The particle size of talc powder is greater than or equal to 800 mesh, and the whiteness is greater than 90%.

[0043] The particle size of heavy calcium powder is greater than or equal to 800 mesh, and the whiteness is greater than 90%.

[0044] The particle size of kaolin is 800 mesh or more, and the whiteness is more than 90%.

[0045] It does not use pH regulators such as AMP-95 or ammonia, and uses the activity of slag powder to increase the pH.

[0046] No fungicide is used, and the activity of the slag powder is used to increase the pH to inhibit the growth of mold.

[0047] The emulsion used is an emulsion that does not emit harmful substances such as VOC.

[0048] The additives used are those with extremely low VOC emissions.

Example Embodiment

[0049] Example 2

[0050] A preparation method of pure taste water-based paint produced by using slag powder. Each raw material component and weight percentage: water 20-30%, slag powder 10-30%, titanium dioxide 0-10%, heavy calcium powder 0-20%, Kaolin 0-15%, heavy calcium powder 0-15%, talc powder 0-5%, emulsion 10-50%, additives 3-8%.

[0051] Proceed as follows:

[0052] S1. Weigh each raw material component according to the above ratio. The weight percentages are: water 20-30%, slag powder 10-30%, titanium dioxide 0-10%, heavy calcium powder 0-20%, kaolin 0- 15%, heavy calcium powder 0-15%, talc powder 0-5%, emulsion 10-50%, additives 3-8%;

[0053] S2. Add the powder thickener hydroxyethyl cellulose to water and stir for 10 minutes until it is uniform to obtain solution A;

[0054] S3. Add dispersant and defoamer to the obtained solution A, and stir for 10 minutes to obtain solution B;

[0055] S4. Slowly add slag powder, titanium dioxide, talcum powder, heavy calcium powder and other solid powders to the obtained solution B under stirring and disperse for 20-40 minutes to avoid agglomeration. If the particle size is greater than 50μm, it needs to be ground to obtain Solution C;

[0056] S5. Add film-forming aids, emulsions, freeze-thaw stabilizers, defoamers, etc. to the obtained solution C under stirring and disperse for 20-30 minutes to obtain solution D;

[0057] S6. Add alkali swelling or polyurethane thickeners and pigments to the obtained solution D under stirring, adjust the viscosity to 75-110KU, and disperse for 10-20 minutes to obtain a clean water-based paint.

Example Embodiment

[0058] Example 3

[0059] A clean taste interior wall paint, the weight of each raw material is: 200kg of water slag superfine powder, 100kg of rutile titanium dioxide, 25kg of rutile titanium dioxide, 100kg of kaolin, 50kg of talc, 2kg of hydroxyethyl cellulose, Defoamer 4kg, dispersant 8kg, film forming aid 16kg, freeze-thaw stabilizer 10kg, emulsion 200kg, dispersant 5kg, deionized water 280kg, alkali swelling thickener 5kg, total mass is about 1t.

[0060] (1) According to the above-mentioned ratio, weigh each raw material component;

[0061] (2) Add the powder thickener to the water and stir for 10 minutes until it is uniform to obtain solution A;

[0062] (3) Add dispersant and defoamer to the obtained solution A, and stir to obtain solution B;

[0063] (4) Add slag powder, titanium dioxide, talc powder, mica powder and other solid powders slowly to the obtained solution B under stirring to avoid agglomeration. If the particle size is larger than 50μm, it needs to be ground to obtain solution C;

[0064] (5) In the obtained solution C, add emulsion, film forming aids, and freeze-thaw stabilizers under stirring to obtain solution D;

[0065] (6) Adjust the viscosity to 75-110KU by adjusting the viscosity of the obtained solution D to the alkali swelling thickener under agitation to obtain a clean interior wall paint.

PUM

Property	Measurement	Unit
Granularity	>= 800.0	mesh

Description & Claims & Application Information

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Ensure personal safety

Odorless water-based coating produced from slag micro-powder, and preparation method thereof

A water-based paint and micropowder technology, applied in antifouling/underwater paints, biocide-containing paints, coatings, etc., can solve problems such as hazards and dust pollution, achieve extremely low VOC, reduce VOC emissions, and improve environmental protection performance effect

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

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Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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