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Water-based dispersed composition of nanometre oxide and its preparation method

A nano-oxide and composition technology, applied in chemical instruments and methods, inorganic pigment treatment, fibrous fillers, etc., can solve the problems of high energy consumption, complex process, and no specific description of nano-powder dispersion stability. Low energy consumption, simple operation and good photocatalytic activity

Inactive Publication Date: 2008-02-20
徐国财
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method is complex in process, high in energy consumption, and the dispersion stability of nanopowders is not specified in the patent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The water-based dispersion composition of nano oxides is made of the following raw materials in weight ratio:

[0032] Silica powder material: 15 parts

[0033] Silica silver-carrying powder material: 5 parts

[0034] Potassium persulfate: (additive) 6 parts

[0035] Oleic acid: (surface treatment agent) 10 parts

[0036] Polyethylene glycol: (dispersant) 7 parts

[0037] Water: 47 parts

[0038] Dissolve 7 parts of polyethylene glycol in 47 parts of water, add powder materials, oleic acid, and potassium persulfate, stir evenly, and adjust the pH to 7 at the same time, in a water bath at 40°C, and mix at a high speed at a shear rate of 3000rpm After 60 minutes, a stable water-based dispersion composition of nano-oxides was prepared. Wherein the content of the powder material accounts for 20% of the total weight. The average particle size of the powder material is 80nm. The resulting water-based dispersion composition was stable for 3 months on storage.

[0039] ...

Embodiment 2

[0041] The water-based dispersion composition of nano oxides is made of the following raw materials in weight ratio:

[0042] Rutile titanium dioxide powder material: 12 parts

[0043] Silica powder material: 3 parts

[0044] Azobisisobutyronitrile: (additive) 7 parts

[0045] Acrylic acid: (surface treatment agent) 10 parts

[0046] Cetyl trimethylamine bromide: (dispersant) 5 parts

[0047] Water: 63 parts

[0048] Prepare cetyltrimethylamine bromide into a solution with a mass concentration of 5%, add powder materials, acrylic acid, azobisisobutyronitrile, stir evenly, and adjust the pH to 8 at the same time, in a water bath at 65°C, at 5000rpm The shear rate is high-shear mixing for 80 minutes to prepare a stable nano-oxide water-based dispersion composition. Wherein the content of the powder material accounts for 15% of the total weight. The average particle size of the powder material is 60nm. The resulting dispersion is storage stable for 4 months.

Embodiment 3

[0050] The water-based dispersion composition of nano oxides is made of the following raw materials in weight ratio:

[0051] Anatase titanium dioxide powder material: 12 parts

[0052] Azobisisopropionitrile: (additive) 7 parts

[0053] Cetyl alcohol: (surface treatment agent) 10 parts

[0054] Polyoxyethylene octylphenol ether-10: (dispersant) 4 parts

[0055] Water: 66 parts

[0056] Prepare polyoxyethylene octylphenol ether-10 into a solution with a mass concentration of 4%, add powder materials, n-hexadecanol, and azobisisopropionitrile, stir evenly, and adjust the pH to 7.5 at the same time, in a 50°C water bath, to High-shear mixing at a shear rate of 3000 rpm for 50 minutes to prepare a stable nano-oxide water-based dispersion composition. Wherein the powder material content accounts for 12% of the total weight. The average particle size of the powder material is 50nm. The resulting dispersion is storage stable for 2 months.

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Abstract

The invention relates to a dispersion article of a plurality of inorganic nano oxides and its preparing process, which is aimed to solve the problems of low dispersity and poor stability of the conventional nano powder material. The dispersion article is a water-based dispersion composition comprising titanium dioxide powder material, silicon dioxide powder material, addition agent, surface processing agent, dispersing agent and water. Its preparing process employs mechanical force for dispersion, which achieves low energy consumption.

Description

technical field [0001] The invention relates to a nano powder dispersion, in particular to a water-based dispersion composition of various inorganic nano oxides and a preparation method. Background technique [0002] How to improve the dispersion and stability of nanopowders in liquid medium is an important research topic in nanoscience and technology today. The importance of nano powder dispersion has penetrated into the fields of metallurgy, chemical industry, food, medicine, paint, papermaking, construction and materials. In the chemical industry, such as coatings, fuels, inks, cosmetics and other industries, the dispersion and dispersion stability of nano-powders in products directly affect their quality and performance. In the prior art, commonly used dispersing methods include methods such as stirring, grinding, and ultrasound, which can be referred to in Chinese Patent No. 01119999.7, title: nanometer aqueous dispersion composition and its preparation method and use,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C3/00C09C1/36C09C1/28
Inventor 徐国财杜虹李芬吉小利熊金钰王艳丽
Owner 徐国财
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