阅读说明：本技术 一种新型纳米氧化钼分散液的制备方法 (Preparation method of novel nano molybdenum oxide dispersion liquid ) 是由 徐勇 徐进 于 2021-10-13 设计创作，主要内容包括：本发明公开了一种新型纳米氧化钼分散液的制备方法,将前驱体液体去离子水放入搅拌缸中,开启搅拌,通过真空上料将前驱粉体纳米氧化钼粉体加入到搅拌缸内,再加入活性分散剂,升温到40-60℃,保温搅拌2-5h,降温至室温备用；再通过珠磨设备将纳米氧化钼液体进行珠磨,边珠磨边投料,珠磨至液体粒径D50＝0.06-0.08μm、D100＝0.18-0.2μm停止珠磨,用内衬陶瓷的不锈钢过滤器过滤到密闭的塑料罐中,即得纳米氧化钼分散液。本发明该制备方法比现有的方法操作简便,工艺时间短,粒径更加均一并且透明度好,液体不沉淀不分层,稳定性好。(The invention discloses a preparation method of novel nano molybdenum oxide dispersion, which comprises the steps of putting precursor liquid deionized water into a stirring cylinder, starting stirring, adding precursor powder nano molybdenum oxide powder into the stirring cylinder through vacuum feeding, adding an active dispersant, heating to 40-60 ℃, keeping the temperature, stirring for 2-5 hours, and cooling to room temperature for later use; and then, carrying out bead grinding on the nano molybdenum oxide liquid by using bead grinding equipment, feeding while carrying out bead grinding, stopping bead grinding until the liquid particle diameter D50 is 0.06-0.08 mu m and the D100 is 0.18-0.2 mu m, and filtering into a closed plastic tank by using a stainless steel filter with a ceramic lining to obtain the nano molybdenum oxide dispersion liquid. Compared with the existing method, the preparation method of the invention has the advantages of simple operation, short process time, more uniform particle size, good transparency, no precipitation and no delamination of liquid and good stability.)

1. A preparation method of novel nano molybdenum oxide dispersion liquid is characterized by comprising the following steps:

preparing precursor powder: weighing nanometer molybdenum oxide powder;

preparing precursor liquid: weighing deionized water;

preparing nano molybdenum oxide liquid: putting the precursor liquid into a stirring cylinder, starting stirring, adding the precursor powder into the stirring cylinder through vacuum feeding, adding the active dispersing agent, heating to 40-60 ℃, keeping the temperature, stirring for 2-5h, and cooling to room temperature for later use;

preparing a nano molybdenum oxide dispersion liquid: and (2) performing bead grinding on the nano molybdenum oxide liquid by using bead grinding equipment, feeding while performing bead grinding, stopping bead grinding until the liquid particle diameter D50 is 0.06-0.08 mu m and D100 is 0.18-0.2 mu m, and filtering into a closed plastic tank by using a stainless steel filter with a ceramic lining to obtain the nano molybdenum oxide dispersion liquid.

2. The method for preparing the novel nano molybdenum oxide dispersion liquid according to claim 1, wherein the active dispersing agent added in the step of preparing the nano molybdenum oxide liquid comprises polyalcohol, sulfonate and alcamines dispersing agent, and the addition amount of the dispersing agent is 0.5-10% of the weight of the precursor powder.

3. The method for preparing the novel nano molybdenum oxide dispersion liquid according to claim 1, wherein in the step of preparing the nano molybdenum oxide liquid, the adding speed of the precursor powder is 1-5 kg/min.

4. The method for preparing the novel nano molybdenum oxide dispersion liquid according to claim 1, wherein in the step of preparing the nano molybdenum oxide liquid, the temperature rise rate of the stirring cylinder is 1-3 ℃/min.

5. The method for preparing a novel nano molybdenum oxide dispersion according to claim 1, wherein in the step of preparing the nano molybdenum oxide dispersion, the bead mill equipment is a bead mill lined with zirconia ceramics, and the beads are zirconium beads with the size of 0.1-1.0 mm.

6. The method for preparing a novel nano molybdenum oxide dispersion liquid according to claim 1, wherein in the step of preparing the nano molybdenum oxide dispersion liquid, the filter element of the stainless steel filter is a 0.22 μm PP folded filter element.

Technical Field

The invention relates to a preparation method of a novel nano molybdenum oxide dispersion liquid, belonging to the technical field of nano material preparation.

Background

The nanometer molybdenum trioxide and white crystalline powder are mainly applied to catalysts, smoke suppression and flame retardance, detection and analysis reagents and the like. When the nano molybdenum trioxide powder is used in the traditional process, the nano molybdenum trioxide powder and other materials need to be uniformly mixed, the powder is easy to agglomerate, the dispersing effect is poor, the particle size advantage after agglomeration is not obvious, and the liquid uniformity is poor. Therefore, after the nano molybdenum oxide is prepared into uniform liquid and is mixed with other liquid materials, the liquid is more uniform and does not agglomerate, so that the liquid can stably exist for a long time, and is not layered or precipitated.

Disclosure of Invention

In order to realize the purpose, the invention provides a preparation method of a novel nano molybdenum oxide dispersion liquid, which adopts the technical scheme that:

a preparation method of novel nano molybdenum oxide dispersion liquid comprises the following steps:

preparing precursor powder: weighing nanometer molybdenum oxide powder;

preparing precursor liquid: weighing deionized water;

preparing nano molybdenum oxide liquid: putting the precursor liquid into a stirring cylinder, starting stirring, adding the precursor powder into the stirring cylinder through vacuum feeding, adding the active dispersing agent, heating to 40-60 ℃, keeping the temperature, stirring for 2-5h, and cooling to room temperature for later use;

preparing a nano molybdenum oxide dispersion liquid: and (2) performing bead grinding on the nano molybdenum oxide liquid by using bead grinding equipment, feeding while performing bead grinding, stopping bead grinding until the liquid particle diameter D50 is 0.06-0.08 mu m and D100 is 0.18-0.2 mu m, and filtering into a closed plastic tank by using a stainless steel filter with a ceramic lining to obtain the nano molybdenum oxide dispersion liquid.

Further, the active dispersant added in the preparation step of the nano molybdenum oxide liquid comprises polyalcohol, sulfonate and alcamines dispersant, and the addition amount of the dispersant is 0.5-10% of the weight of the precursor powder.

Further, in the step of preparing the nano molybdenum oxide liquid, the adding speed of the precursor powder is 1-5 kg/min.

Further, in the step of preparing the nano molybdenum oxide liquid, the heating rate of the stirring cylinder is 1-3 ℃/min.

Further, in the step of preparing the nano molybdenum oxide dispersion, the bead mill equipment is a bead mill lined with zirconia ceramics, and the beads are zirconium beads with the size of 0.1-1.0 mm.

Further, in the nano molybdenum oxide dispersion preparation step, the filter element of the stainless steel filter is a 0.22 μmPP pleated filter element.

The invention has the beneficial effects that: compared with the existing method, the preparation method of the invention has the advantages of simple operation, short process time, more uniform particle size, good transparency, no precipitation and no delamination of liquid and good stability.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention.

Example 1:

a preparation method of novel nano molybdenum oxide dispersion liquid comprises the following steps:

preparing precursor powder: weighing 50kg of nano molybdenum oxide powder, wherein the powder is the nano molybdenum oxide powder produced by Xuancheng Jingrui new material company Limited;

preparing precursor liquid: weighing 200kg of deionized water;

preparing nano molybdenum oxide liquid: putting the precursor liquid into a stirring cylinder, starting stirring, adding the precursor powder into the stirring cylinder through vacuum feeding at the adding speed of 3-5kg/min, adding 3kg of polyhydric alcohol, sulfonate and alcamines dispersant, heating to 50 ℃ at the speed of 1-3 ℃/min, keeping the temperature, stirring for 4h, and cooling to room temperature for later use;

preparing a nano molybdenum oxide dispersion liquid: and (2) performing bead grinding on the nano molybdenum oxide liquid by using bead grinding equipment, feeding while performing bead grinding, stopping bead grinding until the liquid particle diameter D50 is 0.06-0.08 mu m and D100 is 0.18-0.2 mu m, and filtering into a closed plastic tank by using a stainless steel filter with a ceramic lining to obtain the nano molybdenum oxide dispersion liquid.

It should be understood that the above-mentioned embodiments are only illustrative of the technical concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes or modifications made according to the spirit of the main technical scheme of the invention are covered in the protection scope of the invention.