CN104190279A - Preparation method for nano-titanium dioxide dispersion liquid - Google Patents
Preparation method for nano-titanium dioxide dispersion liquid Download PDFInfo
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- CN104190279A CN104190279A CN201410429257.9A CN201410429257A CN104190279A CN 104190279 A CN104190279 A CN 104190279A CN 201410429257 A CN201410429257 A CN 201410429257A CN 104190279 A CN104190279 A CN 104190279A
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Abstract
The invention discloses a preparation method for nano-titanium dioxide dispersion liquid. The preparation method comprises the following steps: firstly, adding anatase nano-titanium dioxide into deionized water to prepare a suspension liquid; secondly, adding the obtained suspension liquid into a magnetic stirrer, adjusting the stirring speed to the third gear, and stirring for 10 minutes so that the titanium dioxide is dispersed uniformly; thirdly, adding polyacrylamide (PAAM) serving as a flocculant into a stirring vortex, adjusting the stirring speed to the second gear, and continuously stirring for 30 minutes; and fourthly, increasing the stirring speed to the fourth gear, and continuously stirring for 10 minutes to obtain the nano-titanium dioxide dispersion liquid. The preparation method has few process flows, and is easy to operate and low in cost; moreover, the prepared the nano-titanium dioxide dispersion liquid has high dispersity, stability, salt resistance and the like in different temperature ranges.
Description
Technical field
The present invention relates to nano titanium oxide technical field, relate in particular to a kind of preparation method of nano titanium oxide dispersion.
Background technology
At present, because titanium dioxide nanoparticle fine causes changes of function, produced the skin effect that bulk does not possess, small-size effect, quantum effect and macro quanta tunnel effect, thereby shown unique performance at aspects such as magnetic, optics, electricity.But because titanium dioxide nanoparticle specific area is large, surface can be higher, while is due to the acting in conjunction of intergranular Van der Waals force and Coulomb force, surface particle is close together mutually, total surface area and surface free energy are reduced, nano particle is very easily reunited, be easy to form second particle, form soft-agglomerated and hard aggregation.
In the time that titanium dioxide is finally applied, its dispersion liquid is actual has purposes more widely, because nano titanium oxide is scattered in water, the state of particle is closer to the application state of practical systems, if can prepare good dispersion and stable nano titanium dioxide water-dispersion liquid, just can effectively solve downstream user and use and easily reunite, disperse inhomogeneous, the problem such as the performance of nanometer usefulness is insufficient when body.
But that the existing scheme of preparing nano titanium oxide dispersion exists is expensive, technological process is many, complicated operation, poor stability and the shortcoming such as concentration is low.
Summary of the invention
The object of this invention is to provide a kind of preparation method of nano titanium oxide dispersion, this preparation method's technological process is few, simple to operate, cost is low, and the nano titanium oxide dispersion of preparation all has excellent dispersiveness, stability and salt-resistance etc. within the scope of different temperatures.
A preparation method for nano titanium oxide dispersion, described method comprises:
Nanometer anatase titania is joined in deionized water, and preparation obtains suspension;
Obtained suspension is put into magnetic stirring apparatus, regulate mixing speed to third gear, stir 10min, titanium dioxide is uniformly dispersed;
Add again poly-propionamide PAAM as flocculant in above-mentioned stirring whirlpool, and regulate mixing speed to arrive second gear, continue to stir 30min;
Heighten again mixing speed to fourth gear, continue to stir 10min, obtain described nano titanium oxide dispersion.
In described flocculant, the ratio of the poly-quality of propionamide and the volume of water is 0.1%-0.3%.
Described magnetic stirring apparatus second gear mixing speed is 600 revs/min; Third gear mixing speed is 900 revs/min; Fourth gear mixing speed is 1200 revs/min.
As seen from the above technical solution provided by the invention, this preparation method's technological process is few, simple to operate, cost is low, and the nano titanium oxide dispersion of preparation all has excellent dispersiveness, stability and salt-resistance etc. within the scope of different temperatures.
Brief description of the drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain other accompanying drawings according to these accompanying drawings.
Preparation method's schematic flow sheet that Fig. 1 is nano titanium oxide dispersion that the embodiment of the present invention provides.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on embodiments of the invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to protection scope of the present invention.
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in further detail, is illustrated in figure 1 preparation method's schematic flow sheet of nano titanium oxide dispersion that the embodiment of the present invention provides, described method comprises:
Step 11: nanometer anatase titania is joined in deionized water, and preparation obtains suspension;
Step 12: obtained suspension is put into magnetic stirring apparatus, regulate mixing speed to third gear, stir 10min, titanium dioxide is uniformly dispersed;
Step 13: add again poly-propionamide PAAM as flocculant in above-mentioned stirring whirlpool, and regulate mixing speed to arrive second gear, continue to stir 30min;
In this step, in the flocculant adding, the ratio of the poly-quality of propionamide and the volume of water can be 0.1%-0.3%.
Step 14: heighten again mixing speed to fourth gear, and continue to stir 10min, obtain described nano titanium oxide dispersion.
Here, selected magnetic stirring apparatus second gear mixing speed is 600 revs/min; Third gear mixing speed is 900 revs/min; Fourth gear mixing speed is 1200 revs/min.
The nano titanium oxide dispersion prepared according to aforesaid operations all has excellent dispersiveness, stability and salt-resistance etc. within the scope of different temperatures, and above-mentioned preparation method stirs after only need to adding PAAM, and technological process is few, simple to operate, cost is low.
With concrete example of making, above-mentioned preparation method is elaborated below, in the following example, not marked experimental technique is carried out according to normal condition conventionally, unless and dated especially, following all umbers are weight portion.
Embodiment 1:
Accurately measure 100ml deionized water in boiling flask, then take 10g nanometer anatase titania in flask, stopper beyond the Great Wall, is put into and on magnetic stirring apparatus, stirs 10min (third gear, 900r/min);
Take 0.15g polyacrylamide (PAAM), join in flask by stirring whirlpool, turn down mixing speed (second gear, 600r/min), stir 30min, now become flocculence;
Heighten mixing speed again and stir 10min to fourth gear (1200r/min), what at this moment obtain is exactly to mix, stablize good nano titanium oxide dispersion.
Embodiment 2:
Accurately measure 100ml deionized water in boiling flask, then take 20g nanometer anatase titania in flask, stopper beyond the Great Wall, is put into and on magnetic stirring apparatus, stirs 10min (third gear, 900r/min);
Take 0.15g polyacrylamide (PAAM), join in flask by stirring whirlpool, turn down mixing speed (second gear, 600r/min), stir 30min, now become flocculence;
Heighten mixing speed again and stir 10min to fourth gear (1200r/min), what at this moment obtain is exactly to mix, stablize good nano titanium dioxide water-dispersion liquid.
In practical application, the nano titanium oxide dispersion obtaining can be put in frozen water, can keep for a long time not flocculating, not precipitating.
In sum, the nano titanium oxide dispersion that adopts embodiment of the present invention institute supplying method to prepare has the following advantages:
1) this preparation method has that technological process is few, the operation feature such as very simple, stirs after only need to adding PAAM;
2) prepared nano titanium oxide dispersion has good stability, can keep dispersity not precipitate for a long time;
3) temperature range of prepared nano titanium oxide dispersion is wide, can mix in bath and keep stable at frozen water;
4) prepared nano titanium oxide dispersion has good salt-resistance, can within the scope of wider pH, keep stable.
The above; only for preferably detailed description of the invention of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with in technical scope that those skilled in the art disclose in the present invention; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (3)
1. a preparation method for nano titanium oxide dispersion, is characterized in that, described method comprises:
Nanometer anatase titania is joined in deionized water, and preparation obtains suspension;
Obtained suspension is put into magnetic stirring apparatus, regulate mixing speed to third gear, stir 10min, titanium dioxide is uniformly dispersed;
Add again poly-propionamide PAAM as flocculant in above-mentioned stirring whirlpool, and regulate mixing speed to arrive second gear, continue to stir 30min;
Heighten again mixing speed to fourth gear, continue to stir 10min, obtain described nano titanium oxide dispersion.
2. the preparation method of nano titanium oxide dispersion according to claim 1, is characterized in that,
In described flocculant, the ratio of the poly-quality of propionamide and the volume of water is 0.1%-0.3%.
3. the preparation method of nano titanium oxide dispersion according to claim 1, is characterized in that,
Described magnetic stirring apparatus second gear mixing speed is 600 revs/min; Third gear mixing speed is 900 revs/min; Fourth gear mixing speed is 1200 revs/min.
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| CN201410429257.9A CN104190279A (en) | 2014-08-27 | 2014-08-27 | Preparation method for nano-titanium dioxide dispersion liquid |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1544335A (en) * | 2003-11-14 | 2004-11-10 | 中山大学 | Nanometer titanium dioxide powder dispersion method |
| US20080317959A1 (en) * | 2006-02-01 | 2008-12-25 | Colorobbia Italia S.P.A. | Method For the Preparation of Aqueous Dispersions of TIO2 in the Form of Nanoparticles, and Dispersions Obtainable With This Method |
| CN102180515A (en) * | 2011-03-21 | 2011-09-14 | 杭州万景新材料有限公司 | Preparation method for nano titanium dioxide with high visible light catalytic activity and water dispersion thereof |
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2014
- 2014-08-27 CN CN201410429257.9A patent/CN104190279A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1544335A (en) * | 2003-11-14 | 2004-11-10 | 中山大学 | Nanometer titanium dioxide powder dispersion method |
| US20080317959A1 (en) * | 2006-02-01 | 2008-12-25 | Colorobbia Italia S.P.A. | Method For the Preparation of Aqueous Dispersions of TIO2 in the Form of Nanoparticles, and Dispersions Obtainable With This Method |
| CN102180515A (en) * | 2011-03-21 | 2011-09-14 | 杭州万景新材料有限公司 | Preparation method for nano titanium dioxide with high visible light catalytic activity and water dispersion thereof |
Non-Patent Citations (2)
| Title |
|---|
| 李志军等: "纳米二氧化钦分散性的实验研究", 《广州化工》, vol. 33, no. 6, 31 December 2005 (2005-12-31) * |
| 胡杰等: "水体系中纳米二氧化钛的分散性能", 《现代纺织技术》, no. 1, 31 December 2008 (2008-12-31) * |
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Application publication date: 20141210 |