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Application of barium sulfate and titanium dioxide composition in coating

A technology of barium sulfate and titanium dioxide, which is applied in the direction of coating, etc., can solve the problems of fluctuations in coating performance and unfavorable overall coating product performance, and achieve stable properties, enhanced gloss and mechanical properties, and improved weather resistance and rheological properties. Effect

Active Publication Date: 2017-03-08
中钛集团焦作市裕盛钛业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this invention, the performance of the prepared coating is excellent, but because the related indicators of titanium dioxide and ultrafine barium sulfate are not limited, this also makes the performance of different batches of coating fluctuate greatly, which is not conducive to improving the overall coating performance. product performance

Method used

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  • Application of barium sulfate and titanium dioxide composition in coating
  • Application of barium sulfate and titanium dioxide composition in coating
  • Application of barium sulfate and titanium dioxide composition in coating

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0049] Industrial titanium dioxide with different particle size distributions was used to prepare finished coatings, and the relevant indicators of the coatings were tested, and other parameters in the process were taken as intermediate values.

[0050] It can be seen from Table 1 that when the median particle size of titanium dioxide exceeds 5 μm, the hiding power, whiteness, and dispersion stability of the finished coating are significantly reduced, and it cannot be used in production and life. Therefore, the present invention selects titanium dioxide whose median particle size is not greater than 5 μm as the experimental raw material.

[0051] Table 1 Effect of titanium dioxide with different particle sizes on coating properties

[0052]

[0053] Note: Test the hiding power of paint according to GB / T 1726-1979 standard; test the whiteness of paint according to GB / T 5950-2008 standard; measure the dispersion stability of paint by pouring 50ml of paint into a stoppered gra...

experiment example 2

[0055] Industrial barium sulfate with different particle size distribution is taken, and other parameters in the process are taken as intermediate values ​​to prepare coatings and conduct relevant tests.

[0056] As can be seen from Table 2, when the median particle size of barium sulfate exceeds 10 μm, its dispersion in the coating is poor, and its dispersion is unstable, so the present invention selects barium sulfate with a median particle size of no more than 10 μm as the experimental raw material.

[0057] Table 2 The effect of barium sulfate with different particle sizes on coating properties

[0058]

[0059]

[0060] Note: The dispersion stability of the coating is measured by taking 50ml of the coating and pouring it into a stoppered scale test tube, and reading the volume V of the supernatant after 48 hours, then the dispersion stability of the coating = (50-V) / 50, where The larger the numerical value, the better the dispersion stability of the paint.

experiment example 3

[0062] Take the median particle size D 50 ≤5μm industrial titanium dioxide, median particle size D 50 For industrial barium sulfate ≤10μm, different numbers of compositions are obtained by mixing barium sulfate and titanium dioxide in different mass ratios, and the coatings are made and their key indicators are tested. Other parameters in the process take intermediate values.

[0063] As shown in Table 3, when the mass ratio of barium sulfate to titanium dioxide is higher than 1:1, although the whiteness is high and the hiding power is good, its dispersion stability decreases significantly; at the same time, at the mass ratio of barium sulfate to titanium dioxide When it is lower than 1:9, the whiteness and hiding power of the paint will deteriorate. Therefore, in the present invention, the selected mass ratio of barium sulfate to titanium dioxide is 1:1-1:9.

[0064] Table 3 Effects of different mass ratios of barium sulfate and titanium dioxide on coating properties

[00...

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Abstract

The invention relates to an application of barium sulfate and titanium dioxide composition in a coating. The median particle diameter D50 of the titanium dioxide in the composition is smaller than or equal to 5 mu m, the median particle diameter D50 of the barium sulfate is smaller than or equal to 10 mu m, and the absolute value of the difference between the median particle diameter of the titanium dioxide and the median particle diameter of the barium sulfate is lower than or equal to 8 mu m; the difference of absolute values of zeta potential of the titanium dioxide and the barium sulfate in deionized water is larger than 10 mV and smaller than 20 mV; the absolute value of the difference between the bulk density of the titanium dioxide and the bulk density of the barium sulfate is 0.35-0.55 g / cm<3>; the particle size distribution of the composition, namely, the quotient obtained by dividing the particle size of particles with accumulated mass smaller than 80% by the particle size of the particles with accumulated mass smaller than 20% is smaller than or equal to 8. The composition is stable in property, good in dispersing performance in the coating and high in whiteness, improves the weather fastness and rheological property of the final coating and enhances the gloss, the mechanical property and the like of the coating.

Description

technical field [0001] The present invention relates to the application of barium sulfate and titanium dioxide composition on coating. Background technique [0002] Coating is a product widely used in daily life. It can be evenly attached to the surface of the substrate material to form a solid film with firm adhesion, certain strength, and continuity. It can protect the surface and beautify the substrate material at the same time. [0003] In recent years, with the improvement of people's living standards and the development of society, consumers have higher and higher demand for paint decoration, and the requirements for various indicators of paint have also become higher and higher, which has prompted paint manufacturers to start from raw materials, production Process and other aspects are considered to improve the performance of coatings. [0004] Invention patent CN 104745042 A discloses a super-leveling high-gloss powder coating formula and its preparation method. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/12C09D201/00
CPCC08K2201/003C08L2205/03C09D201/00C08L1/18C08L91/06C08K13/06C08K9/08C08K2003/3045C08K2003/2241
Inventor 徐英豪
Owner 中钛集团焦作市裕盛钛业有限公司
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