Method for preparing titanium dioxide powder for clothing fouling resistance and ultraviolet shielding materials

Abstract

The invention belongs to the technical field of new materials, and particularly relates to a method for preparing titanium dioxide powder for clothing fouling resistance and ultraviolet shielding materials. The preparation method comprises the steps of: adding a titanium tetrachloride solution to distilled water for stirring, conducting stirring for a period of time, adding a zinc chloride solution, and continuing to conduct stirring for a heat preservation reaction; conducting solid-liquid separation on the suspension after the reaction is finished, and continuously adding hot water to conduct washing until no chlorine radical is detected out in a filtrate; conducting secondary beating on a filter cake after centrifugation separation by using ionized water, and adding lauric acid for stirring and beating at the same time; conducting plate-frame pressure filtering on the material, then conducting calcining, conducting cooling to room temperature after the calcination, and conducting grinding, adding 2-ethylhexyl4-methoxycinnamate, conducting grinding, and then conducting complete sieving by using a filter. The preparation method has the advantages of low energy consumption, high efficiency and low cost, and the prepared titanium dioxide powder has good dispersibility, can improve photocatalytic activity, and improve transparency of a titanium dioxide photocatalytic coating filmapplied to a substrate.

Description

technical field

[0001] The invention belongs to the technical field of new materials, and in particular relates to a preparation method of titanium dioxide powder for clothing antifouling and ultraviolet shielding materials. Background technique

[0002] As one of the most excellent white pigments, titanium dioxide powder is widely used in coatings, plastics, papermaking, ink and other related industries. The most widely used titanium dioxide powder is in the field of pigments, accounting for more than 60%. In recent years, titanium dioxide has been used more and more in the fields of capacitors, thermistors and environmental governance. With the improvement of people's living standards, people's requirements for clothes, especially outdoor sports clothes, are getting higher and higher, which is reflected in the increasing demand for sun-resistant, wear-resistant, and stain-resistant. Since titanium dioxide has a high refractive index in the vicinity of visible light, it ha...

Examples

Embodiment 1

[0033] Add 5L of distilled water into the reaction tank, preheat to 96°C, start stirring, and set the stirring speed at 20r / min, and mix the titanium tetrachloride solution according to the ratio of (water:titanium tetrachloride=1:0.3), Use a peristaltic pump to evenly add to preheated distilled water, and the addition time is required to be completed within 6 minutes. After continuing to stir for 15 minutes, 300 mL of 50 g / L zinc oxide solution was evenly added into the reaction tank within 10 minutes using a peristaltic pump, and continued to stir for 2 hours. The whole process was kept at 96°C.

[0034] Use a centrifuge to separate the solid-liquid of the suspension after the reaction, and continuously add hot water at 40°C for washing, and use 0.1g / L silver nitrate solution to detect that the filtrate is free of chlorine and stop.

[0035] The filter cake after centrifugation is subjected to secondary beating with ionized water, the solid-liquid concentration is controlled...

Embodiment 2

[0037]Add 5L of distilled water into the reaction tank, preheat to 102°C, start stirring, and set the stirring speed at 30r / min, and mix the titanium tetrachloride solution according to the ratio of (water:titanium tetrachloride=1:0.6), Use a peristaltic pump to evenly add to preheated distilled water, and the addition time is required to be completed within 12 minutes. After continuing to stir for 30 minutes, 500 mL of 80 g / L zinc oxide solution was evenly added into the reaction tank within 15 minutes using a peristaltic pump, and continued to stir for 3 hours. The whole process was kept at 102°C.

[0038] Use a centrifuge to separate the solid-liquid of the suspension after the reaction, and continuously add hot water at 60°C for washing, and use 0.3g / L silver nitrate solution to detect that the filtrate is free of chlorine and stop.

[0039] The filter cake after centrifugal separation is subjected to secondary beating with ion water, and the solid-liquid concentration is ...

Embodiment 3

[0041] Add 5L of distilled water into the reaction tank, preheat to 98°C, start stirring, and set the stirring speed at 25r / min, and mix the titanium tetrachloride solution according to the ratio of (water:titanium tetrachloride=1:0.4), Use a peristaltic pump to evenly add it to the preheated distilled water. The addition time is required to be completed within 8 minutes. After continuing to stir for 20 minutes, 350 mL of 60g / L zinc oxide solution is evenly added to the reaction tank within 12 minutes using a peristaltic pump. Continue to stir for 2.5 minutes. The whole process was kept at 98°C.

[0042] Use a centrifuge to separate the solid-liquid of the suspension after the reaction, and continuously add hot water at 45°C to wash it, and use 0.2g / L silver nitrate solution to detect that the filtrate is free of chlorine and stop.

[0043] The filter cake after centrifugal separation is subjected to secondary beating with ion water, and the solid-liquid concentration is contr...

technical field

[0001] The invention belongs to the technical field of new materials, and in particular relates to a preparation method of titanium dioxide powder for clothing antifouling and ultraviolet shielding materials. Background technique

[0002] As one of the most excellent white pigments, titanium dioxide powder is widely used in coatings, plastics, papermaking, ink and other related industries. The most widely used titanium dioxide powder is in the field of pigments, accounting for more than 60%. In recent years, titanium dioxide has been used more and more in the fields of capacitors, thermistors and environmental governance. With the improvement of people's living standards, people's requirements for clothes, especially outdoor sports clothes, are getting higher and higher, which is reflected in the increasing demand for sun-resistant, wear-resistant, and stain-resistant. Since titanium dioxide has a high refractive index in the vicinity of visible light, it ha...

Examples

Embodiment 1

[0033] Add 5L of distilled water into the reaction tank, preheat to 96°C, start stirring, and set the stirring speed at 20r / min, and mix the titanium tetrachloride solution according to the ratio of (water:titanium tetrachloride=1:0.3), Use a peristaltic pump to evenly add to preheated distilled water, and the addition time is required to be completed within 6 minutes. After continuing to stir for 15 minutes, 300 mL of 50 g / L zinc oxide solution was evenly added into the reaction tank within 10 minutes using a peristaltic pump, and continued to stir for 2 hours. The whole process was kept at 96°C.

[0034] Use a centrifuge to separate the solid-liquid of the suspension after the reaction, and continuously add hot water at 40°C for washing, and use 0.1g / L silver nitrate solution to detect that the filtrate is free of chlorine and stop.

[0035] The filter cake after centrifugation is subjected to secondary beating with ionized water, the solid-liquid concentration is controlled...

Embodiment 2

[0037]Add 5L of distilled water into the reaction tank, preheat to 102°C, start stirring, and set the stirring speed at 30r / min, and mix the titanium tetrachloride solution according to the ratio of (water:titanium tetrachloride=1:0.6), Use a peristaltic pump to evenly add to preheated distilled water, and the addition time is required to be completed within 12 minutes. After continuing to stir for 30 minutes, 500 mL of 80 g / L zinc oxide solution was evenly added into the reaction tank within 15 minutes using a peristaltic pump, and continued to stir for 3 hours. The whole process was kept at 102°C.

[0038] Use a centrifuge to separate the solid-liquid of the suspension after the reaction, and continuously add hot water at 60°C for washing, and use 0.3g / L silver nitrate solution to detect that the filtrate is free of chlorine and stop.

[0039] The filter cake after centrifugal separation is subjected to secondary beating with ion water, and the solid-liquid concentration is ...

Embodiment 3

[0041] Add 5L of distilled water into the reaction tank, preheat to 98°C, start stirring, and set the stirring speed at 25r / min, and mix the titanium tetrachloride solution according to the ratio of (water:titanium tetrachloride=1:0.4), Use a peristaltic pump to evenly add it to the preheated distilled water. The addition time is required to be completed within 8 minutes. After continuing to stir for 20 minutes, 350 mL of 60g / L zinc oxide solution is evenly added to the reaction tank within 12 minutes using a peristaltic pump. Continue to stir for 2.5 minutes. The whole process was kept at 98°C.

[0042] Use a centrifuge to separate the solid-liquid of the suspension after the reaction, and continuously add hot water at 45°C to wash it, and use 0.2g / L silver nitrate solution to detect that the filtrate is free of chlorine and stop.

[0043] The filter cake after centrifugal separation is subjected to secondary beating with ion water, and the solid-liquid concentration is contr...

Images