CN1866410A - C/TiO2 compound conductive powder and preparation method thereof - Google Patents
C/TiO2 compound conductive powder and preparation method thereof Download PDFInfo
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- CN1866410A CN1866410A CN 200610021116 CN200610021116A CN1866410A CN 1866410 A CN1866410 A CN 1866410A CN 200610021116 CN200610021116 CN 200610021116 CN 200610021116 A CN200610021116 A CN 200610021116A CN 1866410 A CN1866410 A CN 1866410A
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Abstract
The invention discloses a C-to-TiO2 composite conduct powder and preparing method with excellent conductive property, which comprises the following steps: adopting cheap metatitanate, titanium oxide powder, starch as raw material; blending metatitanate or titanium oxide powder or certain proportional carbon raw material completely; dispersing evenly; placing raw materials in the high-temperature furnace; sintering and charring protected by inert or reduced gas at high temperature to produce C-to-TiO2 composite conduct powder with 4*10-3 omega .cm bulk resistance rate.
Description
Technical field
The present invention relates to a kind of C/TiO with excellent conductive performance
2Composite conductive powder and preparation method thereof, this composite conductive powder has excellent conducting performance, and specific insulation is low to reach 4 * 10
-3Ω cm; This preparation technology is simply efficient, and is with low cost, is easy to realize industrialization.Products obtained therefrom and the raw materials used element that does not all contain contaminated environment, thus environmentally friendly.The invention belongs to inorganic antistatic material field.
Background technology
Anti-static material is widely used in each departments of national economy such as explosive, coal, petrochemical industry, weaving, electronics.The kind of anti-static material mainly contains metal powder, carbon-based material and some conductive oxides at present.Metal powder has good electrical conductivity, but generally has bigger proportion, and acid-fast alkali-proof and antioxygenic property are poor, and price is generally relatively more expensive.The resistivity of conductive carbon black is generally 10
-1～10
1The Ω cm order of magnitude, raw material sources are abundant, low, the light weight of cost, but dispersiveness, oil resistant and adhesive ability are poor.Conductive oxide is a nucleome with mica powder, titanium dioxide, zinc oxide, barite, silica flour etc. generally, coats the way of mixing Sb tin oxide by the surface and prepares conducting powder.The resistivity of this class material is relatively large, and complex process, and cost is higher.
The titanium dioxide conducting powder is nontoxic, have good electrical conductivity and stability, is good antistatic agent and electromagnetic shielding agent, is widely used in each departments of national economy such as explosive, coal, oil, chemical industry, weaving.The method for preparing at present the titanium dioxide conducting powder mainly contains two kinds, and 1. surperficial coated with conductive film adopts chemical coprecipitation to mix the SnO of Sb at the titanium dioxide powder surface deposition
2Nesa coating, the conducting powder of this method preparation has higher whiteness, and resistivity is 10
1～10
2The Ω cm order of magnitude has pigment and anlistatig double action, yet its complex manufacturing causes cost higher.2. high temperature or add under reducing atmosphere that at a low price titanium oxide of hot preparation---titanium is black, under the high temperature, TiO
2Part is lost oxygen, and the nonstoichiometry ratio is expressed as Ti
nO
2n-1, partial oxygen atom and titanium atom leave lattice position and form the defect center, and titanium dioxide is inner to produce a large amount of charge carriers, and resistivity is generally 10
-1～10
1The Ω cm order of magnitude.
Summary of the invention
The objective of the invention is: a kind of C/TiO with excellent conductive performance is provided
2Composite conductive powder is characterized in that: adopting hydrocarbon or carbohydrate such as cheap metatitanic acid, titanium dioxide powder, starch is raw material, and described hydrocarbon or carbohydrate has general formula CxHyOz, wherein x+0.5y 〉=z.Metatitanic acid or titanium dioxide powder with after a certain proportion of CxHyOz fully mixes, is uniformly dispersed, are placed high temperature furnace, and high-temperature roasting charing under inertia or reproducibility gas shiled promptly gets C/TiO
2The conduction composite conductive powder.The specific insulation of product is low to reach 4 * 10
-3Ω cm.Provide a kind of technology simply efficient, with low cost simultaneously, be easy to realize industrialized preparation method.
The object of the present invention is achieved like this:
1. the preparation of precursor: titanium dioxide powder or metatitanic acid are placed ball mill, press TiO
2/ CxHyOz=0.2～5 (mass ratio) ratio adds an amount of carbon raw material, ball milling a few hours, must mix precursor; Titanium dioxide powder or metatitanic acid are placed container, press TiO
2/ CxHyOz=0.2～5 (mass ratio) ratios adds appropriate amount of starch, adds a certain amount of dispersion solvent again, and dispersed with stirring a few hours, solvent evaporated must be mixed precursor.
2. will mix precursor and place high temperature furnace, under inertia or reducing atmosphere protection,, promptly get C/TiO in 600～1200 ℃ of roastings 1～10 hour
2Composite conductive powder.
Characteristics of the present invention are:
Form parent by mixing dispersion method, high-temperature roasting charing effect under protective atmosphere then obtains C/TiO
2Composite conductive powder has good electrical conductivity, and specific insulation is low to reach 4 * 10
-3Ω cm, and have good stable, dispersiveness and weatherability.This preparation method's technology is simply efficient, with low cost, is easy to realize industrialization.Products obtained therefrom and the raw materials used element that does not all contain contaminated environment, thus environmentally friendly.
In order better to illustrate scientific meaning of the present invention and real value, be elaborated below in conjunction with example and accompanying drawing.
Description of drawings
Fig. 1 is prepared C/TiO
2The x-ray diffraction pattern of composite conductive powder.Abscissa is the angle of diffraction 2 θ, and 1,2,3,4 are respectively by embodiment 2, embodiment 4, embodiment 1, embodiment 5 preparation C/TiO among the figure
2The x-ray diffraction pattern of composite conductive powder.
Fig. 2 is according to embodiment 1 prepared C/TiO
2The Ti of composite conductive powder
2pXPS spectrum figure.
Embodiment
Take by weighing metatitanic acid (industrial) 12.5 grams and place 100ml C
2H
5OH/CH
2Cl
2In=1: 1 solvent, press TiO
2/ (C
6H
11O
5) n=0.67 (mass ratio) ratio adding starch, dispersed with stirring 2 hours, solvent evaporated obtains mixing presoma.Place atmosphere furnace then, under the Ar gas shiled,, promptly get C/TiO in 900 ℃ of roastings 5 hours
2Composite conductive powder.TiO with preparation
2Conducting powder places the mould of polytetrafluoroethylene tube, at 40kg/cm then in 110 ℃ of dryings 30 minutes
2Under the pressure, recording resistivity is 4.0 * 10
-3Ω cm.
Take by weighing metatitanic acid (industrial) 12.5 grams and place 100ml C
2H
5OH/CH
2Cl
2In=1: 1 solvent, press TiO
2/ (C
6H
11O
5) n=4 (mass ratio) ratio adding starch, dispersed with stirring 2 hours, solvent evaporated obtains mixing presoma.Then under nitrogen protection in 700 ℃ of roastings 9 hours, promptly get C/TiO
2Composite conductive powder.TiO with preparation
2Conducting powder places the mould of polytetrafluoroethylene tube, at 40kg/cm then in 110 ℃ of dryings 30 minutes
2Under the pressure, recording resistivity is 8.5 * 10
-3Ω cm.
(Panzhihua iron and steel research institute produces, and 48nm) 10 grams place ball mill, press TiO to take by weighing nano titanium oxide
2/ (C
6H
11O
5) n=1 (mass ratio) ratio adds starch, ball milling must mix presoma in 3 hours, then under the Ar gas shiled in 1100 ℃ of roastings 2 hours, promptly get C/TiO
2Composite conductive powder.TiO with preparation
2Conducting powder places the mould of polytetrafluoroethylene tube, at 40kg/cm then in 110 ℃ of dryings 30 minutes
2Under the pressure, recording resistivity is 6.3 * 10
-3Ω cm.
Embodiment 4
(Panzhihua iron and steel research institute produces, and 48nm) 10 grams place ball mill, press TiO to take by weighing nano titanium oxide
2/ (C
6H
11O
5) n=2 (mass ratio) ratio adds starch, ball milling must mix presoma in 3 hours, then under the Ar gas shiled in 800 ℃ of roastings 7 hours, promptly get C/TiO
2Composite conductive powder.TiO with preparation
2Conducting powder places the mould of polytetrafluoroethylene tube, at 40kg/cm then in 110 ℃ of dryings 30 minutes
2Under the pressure, recording resistivity is 8.0 * 10
-3Ω cm.
Embodiment 5
Take by weighing metatitanic acid (industrial) 12.5 grams and place 100ml C
2H
5OH/CH
2Cl
2In=1: 1 solvent, press TiO
2/ (C
6H
11O
5) n=0.5 (mass ratio) ratio adding starch, dispersed with stirring 2 hours, solvent evaporated obtains mixing presoma.Then under the Ar gas shiled in 1000 ℃ of roastings 3 hours, promptly get C/TiO
2Composite conductive powder.TiO with preparation
2Conducting powder places the mould of polytetrafluoroethylene tube, at 40kg/cm then in 110 ℃ of dryings 30 minutes
2Under the pressure, recording resistivity is 4.5 * 10
-3Ω cm.
Embodiment 6
Take by weighing metatitanic acid (industrial) 12.5 grams and place ball mill, press TiO
2/ paraffin=0.5 (mass ratio) ratio adds paraffin, and ball milling must mix presoma in 3 hours, then under nitrogen protection in 800 ℃ of roastings 10 hours, promptly get C/TiO
2Composite conductive powder.TiO with preparation
2Conducting powder places the mould of polytetrafluoroethylene tube, at 40kg/cm then in 110 ℃ of dryings 30 minutes
2Under the pressure, recording resistivity is 8.6 * 10
-3Ω cm.
Embodiment 7
Take by weighing metatitanic acid (industrial) 12.5 grams and place container, press TiO
2/ vegetable oil=1 (mass ratio) ratio adds vegetable oil, grind and must mix presoma in 2 hours, then under argon shield in 900 ℃ of roastings 5 hours, promptly get C/TiO
2Composite conductive powder.TiO with preparation
2Conducting powder places the mould of polytetrafluoroethylene tube, at 40kg/cm then in 110 ℃ of dryings 30 minutes
2Under the pressure, recording resistivity is 7.2 * 10
-3Ω cm.
Embodiment 8
(Panzhihua iron and steel research institute produces, and 48nm) 10 grams place ball mill, press TiO to take by weighing nano titanium oxide
2/ C=5 (mass ratio) ratio adds Nano graphite powder, and ball milling must mix presoma in 4 hours, then under the Ar gas shiled in 600 ℃ of roastings 3 hours, promptly get C/TiO
2Composite conductive powder.TiO with preparation
2Conducting powder places the mould of polytetrafluoroethylene tube, at 40kg/cm then in 110 ℃ of dryings 30 minutes
2Under the pressure, recording resistivity is 5.3 * 10
-3Ω cm.
Claims (9)
1. composite conductive powder with excellent conductive performance, it is characterized in that: described composite conductive powder is C/TiO
2Composite conductive powder.
2. C/TiO according to claim 1
2Composite conductive powder is characterized in that: after titanium material and carbon raw material are fully mixed by a certain percentage, are uniformly dispersed, place high temperature furnace, high-temperature roasting charing under inertia or reducing atmosphere protection promptly gets C/TiO
2The conduction composite conductive powder.
3. C/TiO according to claim 2
2The preparation method of composite conductive powder is characterized in that: titanium material is titanium dioxide powder or metatitanic acid.
4. want 2 described C/TiO according to right
2The preparation method of composite conductive powder is characterized in that: the carbon raw material is CxHyOz, wherein x+0.5y 〉=z.
5. want 4 described C/TiO according to right
2The preparation method of composite conductive powder is characterized in that: the carbon raw material is a starch.
6. want 4 described C/TiO according to right
2The preparation method of composite conductive powder is characterized in that: the carbon raw material is a kind of sugar.
7. want 4 described C/TiO according to right
2The preparation method of composite conductive powder is characterized in that: the carbon raw material is a graphite.
8. want 4 described C/TiO according to right
2The preparation method of composite conductive powder is characterized in that: the carbon raw material is a paraffin.
9. want 4 described C/TiO according to right
2The preparation method of composite conductive powder is characterized in that: the carbon raw material is a vegetable oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610021116 CN1866410A (en) | 2006-06-06 | 2006-06-06 | C/TiO2 compound conductive powder and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610021116 CN1866410A (en) | 2006-06-06 | 2006-06-06 | C/TiO2 compound conductive powder and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN1866410A true CN1866410A (en) | 2006-11-22 |
Family
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| CN 200610021116 Pending CN1866410A (en) | 2006-06-06 | 2006-06-06 | C/TiO2 compound conductive powder and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543247A (en) * | 2012-01-14 | 2012-07-04 | 佛山市中国科学院上海硅酸盐研究所陶瓷研发中心 | Composite conductive powder |
| CN106865602B (en) * | 2017-03-02 | 2019-04-23 | 攀枝花学院 | Graphite-titanium suboxide composite material preparation method |
-
2006
- 2006-06-06 CN CN 200610021116 patent/CN1866410A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543247A (en) * | 2012-01-14 | 2012-07-04 | 佛山市中国科学院上海硅酸盐研究所陶瓷研发中心 | Composite conductive powder |
| CN102543247B (en) * | 2012-01-14 | 2015-12-09 | 佛山市中国科学院上海硅酸盐研究所陶瓷研发中心 | A kind of composite conductive powder |
| CN106865602B (en) * | 2017-03-02 | 2019-04-23 | 攀枝花学院 | Graphite-titanium suboxide composite material preparation method |
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