CN102382488A - Method for preparing wollastonite loaded nanometer SnO2 type composite antistatic function fillings - Google Patents
Method for preparing wollastonite loaded nanometer SnO2 type composite antistatic function fillings Download PDFInfo
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- CN102382488A CN102382488A CN2010102670349A CN201010267034A CN102382488A CN 102382488 A CN102382488 A CN 102382488A CN 2010102670349 A CN2010102670349 A CN 2010102670349A CN 201010267034 A CN201010267034 A CN 201010267034A CN 102382488 A CN102382488 A CN 102382488A
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- wollastonite
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Abstract
The invention relates to a method for preparing wollastonite loaded nanometer SnO2 type composite antistatic function fillings. Water is added into wollastonite to carry out stirring and pulping, and SnCl4 solution is added for carrying out hydrolysis reaction; ammonia water is used for regulating the pH of reactants; after the reactants are raised to a certain temperature, the temperature is maintained, and the reaction lasts a period of time; and finally, the reactants are filtered, washed, dried and calcined, and the wollastonite loaded nanometer SnO2 type composite antistatic function fillings are obtained. The wollastonite loaded nanometer SnO2 type composite antistatic function fillings have the advantages that no toxicity and no stimulation exist, the whiteness is high, the price is low, the original advantages of the wollastonite used as the fillings are reserved, in addition, the resistivity of the wollastonite is obviously reduced, and the wollastonite loaded nanometer SnO2 type composite antistatic function fillings can be widely used as antistatic fillings of materials such as plastics, rubber products, chemical fibers and the like.
Description
1. technical field
The present invention relates to a kind of wollastonite loaded with nano SnO
2The preparation method of type composite anti-static functional stuffing belongs to mineral processing and mineral material field.
2. background technology
Antistatic material is that a kind of industry and civil use material and device of preventing produces the general name of one type of material of electrostatic.Each industrially developed country of the world all attaches great importance to Antistatic Materials, production and use; Particularly, all generally use antistatic material with tubing etc. like electronic computer room floor, particular packing and Turnover Box, industrial packaging film, mine at some specific area.Used static inhibitor to become the main means of antistatic technology since oneth century, still for many industrial circles, static hazard still is a problem demanding prompt solution.As at field of plastics processing, the thermoplastic engineering plastic processing temperature is high, and processing conditions is very harsh, presses for exploitation good stability, the better antistatic material of processed-type; In addition, in textile industry, the anti-quiet filler that requires to have high thermal stability and better static resistance and practicality arranged is in order to prepare the melt-spinning synthon.
The inorganic antistatic material is that a kind of use temperature is higher, the antistatic material of stable performance.In engineering materials, using more inorganic antistatic material or filler at present is main with graphite, carbon black, MOX etc.It mainly is to utilize methods such as physics, chemistry, and interpolation or filling graphite, carbon black, MOX etc. are to reach anlistatig purpose in product.But graphite and carbon black color are dark, and the product colour of being produced is malleable not, and it is attractive in appearance to influence product, has limited the range of application of product; It is higher and can influence the performance such as mechanics, calorifics of product to add single MOX production cost.Therefore, need the exploitation novel inorganic antistatic material that use properties is better, whiteness is high and production cost is lower.
The wollastonite whiteness is higher, and raw material sources are extensive, and tooling cost is lower, and has the raphioid fiber structure, and good strengthening and toughening performance is arranged, and has been widely used as the strengthening and toughening filler of plastics etc.Therefore, the objective of the invention is shortcoming or deficiency to existing inorganic antistatic material, propose a kind of be carrier with the wollastonite, with SnCl
45H
2O is the tindioxide presoma, adopts the neutralizing hydrolysis precipitator method at wollastonite particle surface loaded with nano SnO
2, prepare and have the good resistance antistatic property and fill the wollastonite composite anti-static functional stuffing strengthen the property.
3. summary of the invention
Wollastonite is added the water stirring pulping, add SnCl
4The solution reaction that is hydrolyzed; PH with ammoniacal liquor conditioned reaction thing; Reactant is risen to insulation reaction certain hour after the certain temperature; With reactant filtration, washing, dry and calcining, promptly get wollastonite loaded with nano SnO at last
2Type composite anti-static functional stuffing.
SnCl
4Hydrolysis reaction generates tindioxide to carry out in two steps, and its reactive chemistry equation is following:
SnCl
4+4OH
-＝Sn(OH)
4+4Cl
-
Sn(OH)
4＝SnO
2↓+2H
2O
Its step of preparation process is following:
(1) the wollastonite pulp preparation adds wollastonite the water stirring pulping and is adjusted to finite concentration;
(2) nano SnO
2Load is lowered the temperature to slurry, treats that adding the certain density tin tetrachloride aqueous solution after temperature is reduced to below 5 ℃ carries out stirring reaction; The pH that adds ammoniacal liquor conditioned reaction thing; Insulation reaction 10～120min after then reactant being warmed up to 10～100 ℃;
(3) with the filtration of step (2) reactant, washing, dry and calcining.
Below be prescription of the present invention and main technique condition:
(1) mass concentration of wollastonite pulp preparation wollastonite slurries is 5%～20%.
(2) nano SnO
2Loaded with nano SnO
2Covering amount (mass percent) is 0.2%～10%; Reaction end pH value is 3～9.
(3) reactant filtration, washing, drying and calcining drying temperature are 90～120 ℃; 200～1000 ℃ of calcining temperatures, soaking time 0.5～8h.
Below by embodiment the present invention is done further elaboration, the restriction of the example that protection scope of the present invention is not subjected to be lifted.
Wollastonite loaded with nano SnO with the present invention's preparation
2Type composite anti-static functional stuffing is nontoxic, non-stimulated, whiteness is high, inexpensive; Not only kept the original advantage of wollastonite as filler; And significantly reduced the resistivity of wollastonite, can extensively be used as the antistatic filler of materials such as plastics, rubber item, chemical fibre.
4. accompanying drawing content
Accompanying drawing is a process flow sheet of the present invention.
5. embodiment
Embodiment one:
Get wollastonite 30g, in reaction kettle, add water 210mL, dispersed with stirring and to be cooled to adding prepares after 5 ℃ concentration be that the tin tetrachloride aqueous solution 8mL of 0.4mol/L stirs that to add ammoniacal liquor conditioned reaction liquid pH value be 7 in the back; Stirring reaction also is warming up to 20 ℃, under 20 ℃ of temperature, reacts 50min then; 6h is calcined in reaction product filtration, the insulation under 800 ℃ of dry back, promptly get wollastonite loaded with nano SnO
2The type composite powder material.
Embodiment two:
Get wollastonite 30g, in reaction kettle, add water 270mL, dispersed with stirring and to be cooled to adding prepares after 5 ℃ concentration be that the tin tetrachloride aqueous solution 2mL of 0.4mol/L stirs that to add ammoniacal liquor conditioned reaction liquid pH value be 6 in the back; Stirring reaction also is warming up to 60 ℃, under 60 ℃ of temperature, reacts 40min then; 4h is calcined in reaction product filtration, the insulation under 1000 ℃ of dry back, promptly get wollastonite loaded with nano SnO
2The type composite powder material.
Embodiment three:
Get wollastonite 30g, in reaction kettle, add water 310mL, dispersed with stirring and to be cooled to adding prepares after 5 ℃ concentration be that the tin tetrachloride aqueous solution 6mL of 0.4mol/L stirs that to add ammoniacal liquor conditioned reaction liquid pH value be 5 in the back; Stirring reaction also is warming up to 80 ℃, under 80 ℃ of temperature, reacts 30min then; 5h is calcined in reaction product filtration, the insulation under 900 ℃ of dry back, promptly get wollastonite loaded with nano SnO
2The type composite powder material.
Table 1 is the embodiment test result of samples.
The check and analysis result of table 1 embodiment sample
| Embodiment | SnO 2Charge capacity/%w | Resistivity [1]/kΩ·cm |
| Wollastonite | 0 | 10.683 |
| 1 | 1.6 | 3.8888 |
| 2 | 0.4 | 2.5326 |
| 3 | 1.2 | 2.9526 |
Annotate: [1] is pressed into the thin slice of diameter 50mm, thickness 2mm with the 5g composite granule, tests the gained result with the four point probe resistivity tester.
Claims (4)
1. wollastonite loaded with nano SnO
2The preparation method of type composite anti-static functional stuffing is characterized in that its step of preparation process is:
1. the wollastonite pulp preparation adds wollastonite the water stirring pulping and is adjusted to finite concentration;
2. nano SnO
2Load is lowered the temperature to slurry, treats that adding the certain density tin tetrachloride aqueous solution after temperature is reduced to below 5 ℃ carries out stirring reaction; The pH that adds ammoniacal liquor conditioned reaction thing; Insulation reaction 10～120min after then reactant being warmed up to 10～100 ℃;
3. with 2. reactant filtration of step, washing, dry and calcining.
2. wollastonite pulp preparation according to claim 1, the mass concentration that it is characterized in that the wollastonite slurries is 5%～20%.
3. nano SnO according to claim 1
2Load is characterized in that: nano SnO
2Covering amount (mass percent) is 0.2%～10%; Reaction end pH value is 3～9.
4. wollastonite loaded with nano SnO according to claim 1
2The preparation method of type composite powder material, it is characterized in that described with reactant filter, washing, dry and calcining, its processing condition are: 90～120 ℃ of drying temperatures; 200～1000 ℃ of calcining temperatures, soaking time 0.5～8h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010267034 CN102382488B (en) | 2010-08-31 | 2010-08-31 | Method for preparing wollastonite loaded nanometer SnO2 type composite antistatic function fillings |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010267034 CN102382488B (en) | 2010-08-31 | 2010-08-31 | Method for preparing wollastonite loaded nanometer SnO2 type composite antistatic function fillings |
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| CN102382488A true CN102382488A (en) | 2012-03-21 |
| CN102382488B CN102382488B (en) | 2013-07-10 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6395149B1 (en) * | 1998-06-30 | 2002-05-28 | 3M Innovative Properties Company | Method of making light colored, electrically conductive coated particles |
| CN1462775A (en) * | 2003-05-27 | 2003-12-24 | 中国地质大学（武汉） | Method for modifying wollastonite |
| CN101724175A (en) * | 2008-10-15 | 2010-06-09 | 中国矿业大学(北京) | Inorganic compounding and surface modifying method of wollastonite stuffing |
-
2010
- 2010-08-31 CN CN 201010267034 patent/CN102382488B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6395149B1 (en) * | 1998-06-30 | 2002-05-28 | 3M Innovative Properties Company | Method of making light colored, electrically conductive coated particles |
| CN1462775A (en) * | 2003-05-27 | 2003-12-24 | 中国地质大学（武汉） | Method for modifying wollastonite |
| CN101724175A (en) * | 2008-10-15 | 2010-06-09 | 中国矿业大学(北京) | Inorganic compounding and surface modifying method of wollastonite stuffing |
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| CN102382488B (en) | 2013-07-10 |
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Effective date of registration: 20191008 Address after: 100083 Beijing City, Haidian District Institute of Rutosids No. 11 Co-patentee after: Xinyu Nanfang wollastonite Co., Ltd. Patentee after: China University of Mining and Technology (Beijing) Address before: 100083 Beijing City, Haidian District Institute of Rutosids No. 11 Patentee before: China University of Mining and Technology (Beijing) |
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