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Calcium-based titanium dioxide and preparation process thereof

A calcium-based titanium dioxide, preparation process technology, applied in dyeing organosilicon compound treatment, inorganic pigment treatment, dyeing low molecular organic compound treatment and other directions, can solve the problem of low hiding power, insufficient weather resistance, and unsatisfactory achromatic performance. Satisfaction and other issues, to achieve the effect of improving whiteness, reducing production costs, and increasing added value of products

Active Publication Date: 2016-07-13
南召县兴利达岗石有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, there are agglomeration phenomena in the preparation of most composite titanium dioxide, and the products show low hiding power, insufficient weather resistance, unsatisfactory decolorization performance, etc., so the current titanium dioxide technology is limited to a certain extent. It is to replace titanium dioxide by sacrificing some of the proper properties of titanium dioxide, and it cannot completely replace titanium dioxide.

Method used

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  • Calcium-based titanium dioxide and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Take 60 parts of 4000 mesh ultra-fine calcium carbonate powder and soft water in the ratio of 1:3 and mix them evenly in No. Storage tank, take 1 part of polycarboxylate sodium salt and 2 parts of dodecyl alcohol ester, and add soft water according to 2 times the total weight of polycarboxylate sodium salt and dodecyl alcohol ester, and mix evenly in No. storage tank; after pre-storage tanks 1, 2, and 3 are mixed evenly, they are added to the mixing reaction tank with low-speed stirring at the same time, the stirring speed is controlled at 5 rpm, and the overweight reaction is carried out for 1 hour to make the surface of the particles hydroxylated; after hydroxylation The solution is sent to a three-stage series high-speed mill, and the PLU control system is used to control the reaction. The high-speed mill is ground at a temperature of 55°C at a speed of 4500 rpm for 1.8 hours to obtain a calcium-based titanium emulsion and send it into a hot air stream Solidification...

Embodiment 2

[0029] Take 80 parts of 5000-mesh ultra-fine calcium carbonate powder and soft water in the ratio of 1:4 and mix them evenly in No. Storage tank, take 0.6 parts of polycarboxylate sodium salt and 1.5 parts of dodecyl alcohol ester, and add soft water according to 1.5 times of the total weight of polycarboxylate sodium salt and dodecyl alcohol ester, and mix evenly in No. Storage tanks; after pre-storage tanks 1, 2, and 3 are mixed evenly, add them to the mixing reaction tank with low-speed stirring at the same time, control the stirring speed at 8 rpm, and react for 1.5 hours overweight to make the surface of the particles hydroxylated; after hydroxylation The solution is sent to a three-stage series high-speed mill, and the PLU control system is used to control the reaction. The high-speed mill is ground at a temperature of 60°C and a speed of 5000 rpm for 4 hours to obtain a calcium-based titanium emulsion and send it into a hot air stream. Solidification and drying tank, fa...

Embodiment 3

[0031] Take 90 parts of 6000-mesh ultra-fine calcium carbonate powder and soft water in a ratio of 1:5 and mix them evenly in No. storage tank, take 2 parts of polycarboxylate sodium salt and 3 parts of dodecyl alcohol ester, and add soft water according to 3 times of the total weight of polycarboxylate sodium salt and dodecyl alcohol ester, and mix evenly in No. Storage tanks; after pre-storage tanks 1, 2, and 3 are mixed evenly, they are added to the mixing reaction tank with low-speed stirring at the same time, the stirring speed is controlled at 10 rpm, and the overweight reaction is carried out for 2 hours to make the surface of the particles hydroxylated; after hydroxylation The solution is sent to a three-stage series high-speed mill, and the PLU control system is used to control the reaction. The high-speed mill is ground at a temperature of 68°C and a speed of 6600 rpm for 2.2 hours to obtain a calcium-based titanium emulsion and send it into a hot air stream. Solidif...

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Abstract

The invention discloses calcium-based titanium dioxide and a preparation process thereof. The calcium-based titanium dioxide is prepared from an outer membrane formed by coating a core substrate made of a 4,000-6,000-mesh superfine calcium carbonate inorganic powder material with titanium dioxide having the meshes of 10,000 or above. According to the preparation process, a uniformly mixed aqueous solution is prepared from superfine calcium carbonate, a uniformly mixed aqueous solution is prepared from titanium dioxide, a uniformly mixed aqueous solution is prepared from a dispersing agent and a coating agent, accordingly, the agglomeration phenomenon is effectively avoided, superfine calcium carbonate effectively keeps in a dispersed state, a PUC control system is used for controlling time, speeds, temperature and electric charge of a three-stage cascade high-speed mill as well as and mechanical chemical reactions, inorganic coating is performed according to the principles of kinetics and thermodynamics, and the outer membrane is uniform and compact in coating and firm in combination. Through drying, curing, homogenized powder and homogenization, modification and membrane repairing, the membrane is smoother, and the whiteness, the oil absorption value and the covering power of a product are effectively improved. Detection proves that the whiteness reaches 97%-99%, the oil absorption value is 29-35 g / 100 g, the covering power is higher than 35.4 g / m<2>, and the product indexes all reach or exceed the national standard.

Description

technical field [0001] The invention belongs to the technical field of titanium dioxide production, and in particular relates to a calcium-based titanium dioxide and a preparation process thereof. Background technique [0002] Titanium dioxide is a white mineral-filled pigment whose main component is titanium dioxide (TiO2). It is harmless to the human body and other properties, so it has become the best white pigment so far, and is widely used in plastics, rubber, paper, paint, ink, paint and other industries. In particular, the paint industry is the largest user of titanium dioxide. The paint made of titanium dioxide has bright colors, high hiding power, strong tinting power, low consumption, and many varieties. It can protect the stability of the medium and strengthen the paint. The mechanical strength and adhesion of the film can prevent cracks, prevent ultraviolet rays and moisture from penetrating, and prolong the life of the paint film. At the same time, due to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/36C09C3/08C09C3/10C09C3/12
CPCC09C1/3669C09C1/3676C09C1/3684C09C1/3692C09C3/006C09C3/08C09C3/10C09C3/12
Inventor 刘武营刘汉卿刘真真周士贤周震宋鲜名王康
Owner 南召县兴利达岗石有限公司
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