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Preparation method of titanium dioxide nano powder

A nano-powder, titanium dioxide technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve the problems of unsuitability for industrial production, danger, and high equipment requirements, achieve uniform microscopic morphology and size, simple and easy-to-control steps, high purity effect

Active Publication Date: 2010-02-24
苏州美纳福健康科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process has relatively high requirements on equipment, and the process of combustible gas and oxygen combustion is dangerous, so it is not suitable for industrial production

Method used

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  • Preparation method of titanium dioxide nano powder
  • Preparation method of titanium dioxide nano powder

Examples

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Effect test

Embodiment 1

[0024] Weigh 10 g of solid paraffin and heat to 65°C until the paraffin is completely melted. Measure 20 g of butyl titanate, mix it with molten paraffin evenly under stirring, and cool while stirring to obtain a paraffin block dispersed with butyl titanate. Put the paraffin block dispersed with butyl titanate into water, heat and stir at 65°C until the paraffin wax is completely melted, and the butyl titanate is slowly released during the melting process, and hydrolyzes with water to form a uniformly dispersed emulsion . Then stand still and cool to room temperature, the emulsion appears to be separated, and the paraffin coagulates into blocks on the water surface, and the resulting flocculated solid slowly sinks to the bottom of the beaker, forming a precipitate. When no flocculated matter sinks, take out the wax block, centrifuge the remaining solution, dry the obtained solid naturally, and calcinate it in a muffle furnace at a temperature of 500°C to obtain anatase nano-t...

Embodiment 2

[0028] Weigh 10 g of solid paraffin and heat to 65°C until the paraffin is completely melted. Measure 30 g of tetramethyl titanate, mix it uniformly with molten paraffin under stirring, and cool while stirring to obtain a paraffin block dispersed with tetramethyl titanate. Put the paraffin block dispersed with tetramethyl titanate into water, and stir while heating at 65°C until the paraffin wax is completely melted. During the melting process, the tetramethyl titanate is slowly released and hydrolyzed with water to form a uniform dispersion. lotion. Then stand still and cool to room temperature, the emulsion appears to be separated, and the paraffin coagulates into blocks on the water surface, and the resulting flocculated solid slowly sinks to the bottom of the beaker, forming a precipitate. When no flocculated matter sinks, take out the wax block, centrifuge the remaining solution, dry the obtained solid naturally, and calcinate it in a muffle furnace at a temperature of 8...

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Abstract

The invention discloses a preparation method of titanium dioxide nano powder, comprising the following steps: heating solid paraffin to a molten state, dropwise adding titanate into molten paraffin, fully and evenly stirring, cooling down to room temperature to obtain paraffin blocks dispersed with titanate, putting the paraffin blocks dispersed with titanate into water, heating and stirring, slowly releasing the titanate with the melting of paraffin, hydrolyzing the titanate in water medium to form dispersive and even emulsion, stewing, cooling and layering, taking out paraffin coagulums, centrifugalizing the solution, and calcining the obtained product in a retortfurnace to obtain the nano titanium dioxide powder. The method utilizes the solidification and melting of paraffin to controlthe whole reaction process, does not need to add any other organic surface active agent and dispersing agent, has the advantages of simple and easy control, green earth and repeated use of paraffin, and is particularly suitable for continuous production. The prepared product has high purity, even microcosmic appearance and size and good dispersity.

Description

technical field [0001] The invention relates to a preparation method of titanium dioxide nanometer powder, which belongs to the technical field of inorganic material preparation. Background technique [0002] Titanium dioxide is a white inorganic pigment with non-toxicity, best opacity, best whiteness and brightness. It is considered to be a white pigment with the best performance in the world. It is widely used in coatings, plastics, papermaking, inks Printing, chemical fiber, rubber, cosmetics and other industries. [0003] Nano-titanium dioxide is a new type of inorganic material with a particle size of 10-100nm, which is equivalent to 1 / 10 of the particle size of ordinary titanium dioxide. Because nano-titanium dioxide has a strong ability to absorb ultraviolet rays, a unique color effect, and better thermal stability properties, chemical stability and excellent optical, electrical and mechanical properties, among which the anatase type has higher catalytic efficiency, ...

Claims

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Application Information

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IPC IPC(8): C01G23/047
Inventor 王作山郑敏鲁娟
Owner 苏州美纳福健康科技有限公司
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