CN107216687A - A kind of method that conductivity type titanium white is prepared based on improvement process of surface treatment - Google Patents
A kind of method that conductivity type titanium white is prepared based on improvement process of surface treatment Download PDFInfo
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- CN107216687A CN107216687A CN201710522524.0A CN201710522524A CN107216687A CN 107216687 A CN107216687 A CN 107216687A CN 201710522524 A CN201710522524 A CN 201710522524A CN 107216687 A CN107216687 A CN 107216687A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/36—Compounds of titanium
- C09C1/3607—Titanium dioxide
- C09C1/3653—Treatment with inorganic compounds
- C09C1/3661—Coating
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/36—Compounds of titanium
- C09C1/3607—Titanium dioxide
- C09C1/3676—Treatment with macro-molecular organic compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/36—Compounds of titanium
- C09C1/3692—Combinations of treatments provided for in groups C09C1/3615 - C09C1/3684
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/006—Combinations of treatments provided for in groups C09C3/04 - C09C3/12
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/06—Treatment with inorganic compounds
- C09C3/063—Coating
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/10—Treatment with macromolecular organic compounds
Abstract
The invention discloses a kind of based on the method that process of surface treatment prepares conductivity type titanium white is improved, belong to titanium dioxide preparing technical field.Raw material is beaten after broken after the present invention calcines titanium white, disperseed using sodium silicate solution, inorganic surface treatment is carried out to it again after grinding is sanded, tin-oxide, aluminum oxide, zinc oxide are coated, changes Surface of Titanium Dioxide property, the good rear product of cladding is washed, remove excess salt, air-flow crushing is carried out after drying, electroconductive resin is introduced simultaneously crushing, final conductivity type titanium white is obtained.The present invention to titanium white particle by carrying out inorganic surface treatment, coat tin-oxide, aluminum oxide, zinc oxide, change Surface of Titanium Dioxide property, improve the conductive characteristic of titanium white particle, introduce electroconductive resin, with more preferable sheet resistance ability, it can be widely applied for inner wall of oil tank, oil pipeline etc. and lead among (quiet) electric special coating product.
Description
Technical field
The present invention relates to titanium dioxide preparing technical field, more specifically to one kind based on improvement process of surface treatment
The method for preparing conductivity type titanium white, the present invention is surface-treated to titanium white, is improved the electric conductivity of titanium white, is widely used in oil tank
Inwall, oil pipeline etc. are led among (quiet) electric special coating product.
Background technology
With the development in epoch, the living standard and quality of life of people are improved constantly, and various high polymer materials are daily
Application in life gradually increases, and brings great convenience.But it is due to that high polymer material self-conductive ability is poor,
It can usually be influenceed because of by environment, cause accumulation of static electricity and cause accident, bring irreparable damage.Especially oil tank
Inwall, oil pipeline, if not carrying out anti-static precautions, can cause very serious consequence.Therefore it is guarantee inner wall of oil tank, oil transportation
Pipeline transports storage safely, and the development of electric conductivity anticorrosive paint is increasingly taken seriously.
Electric conductivity anticorrosive paint is mainly used in eliminating electrostatic hazard, with the spy such as simple to operate, easy construction, with low cost
Point, in the market has also formed highly developed production process.But the subject matter that electric conductivity anticorrosive paint is present is coating
It is unusable or conventional filler (such as talcum powder, barium sulfate, titanium white) can not be used completely with filler, especially with extensive
Titanium white.Because traditional titanium white effect mainly improves the optical property of coating itself, rheological property, its own mechanical intensity are equivalent
Really, it is little in the surface conductance performance effect that electric conductivity anticorrosive paint is paid special attention to, it is also possible to play negative contribution function, therefore
It is always that China one is big empty to meet the desired special titanium white of electric conductivity anticorrosive paint by China's autonomous production and electric conductivity completely
Lack.
Through retrieval, the production technology of conductive titanium white is mainly using titanium dioxide and graphite oxide progress physics in the prior art
Mix to carry out, such as number of patent application CN 201510700462.9, invention and created name is：A kind of nano-level conducting titanium dioxide
Production technology；Graphene oxide is reduced into graphene and mixed with titanium dioxide by this application case, eventually forms titanium dioxide
Titanium-graphene composite material, graphite powder is aoxidized, graphene oxide is formed after centrifugation with the concentrated sulfuric acid and potassium permanganate, is done
Dry and grind into powder, graphene oxide powder and titania powder are respectively put into absolute ethyl alcohol, by graphene oxide
Absolute ethyl alcohol dispersion liquid is instilled in the absolute ethyl alcohol dispersion liquid of titanium dioxide, adds hydrochloric acid and distilled water obtains gelatinous product,
And be aged, be cleaned by ultrasonic, then it is calcined, grinds, graphene oxide is reduced to graphene and combined to form with titanium dioxide
Conductive titanium dioxide.This application case is such a scheme, but the conductive titanium dioxide photocatalytic activity that this kind of scheme is produced has
Limit, can not reach good optical property, degradation rate is higher in actual use, it is impossible to be properly arrived at permanent conductive, prevent
The requirement of electrostatic product.
Number of patent application CN 201610148082.3, invention and created name is：Dry method doping prepares the conductive titanium of rutile-type
The method of white powder；This application case adds the middle product metatitanic acid for having been added to rutilization nuclei that sulfuric acid method titanium pigment is produced
Into oxalic acid solution, suspension is configured to；Tin oxide and antimony oxide shear-mixed are added in suspension；Refilter,
Washing is to without oxalate；Drying, grinding, roasting, conductive titanium dioxide is obtained after being subsequently cooled to room temperature, crushing.This application case
Cardinal principle is metal-doped modification, under certain conditions in titanium dioxide doped tin, antimony and prepare conductive titanium dioxide, its
The conductive titanium dioxide photocatalytic activity of preparation is limited, and good optical property can not be reached in actual use, and degradation rate is higher,
The requirement of permanent conductive, antistatic can not be properly arrived at.
The content of the invention
1. the invention technical problem to be solved
It is an object of the invention to solve above-mentioned problems of the prior art to be based on improving at surface there is provided one kind
The method that science and engineering skill prepares conductivity type titanium white；The present invention by titanium white particle carry out inorganic surface treatment, cladding tin-oxide,
Aluminum oxide, zinc oxide, change Surface of Titanium Dioxide property, improve the conductive characteristic of titanium white particle, introduce electroconductive resin, are allowed to have
There is more preferable sheet resistance ability, can be widely applied for inner wall of oil tank, oil pipeline etc. and lead (quiet) electric special coating product working as
In.
2. technical scheme
To reach above-mentioned purpose, the technical scheme that the present invention is provided is：
A kind of method that conductivity type titanium white is prepared based on improvement process of surface treatment of the present invention, raw material after titanium white is calcined
It is beaten, is disperseed using sodium silicate solution after broken, be sanded after grinding and carry out inorganic surface treatment to it again, coats tin
Oxide, aluminum oxide, zinc oxide, change Surface of Titanium Dioxide property, and the good rear product of cladding is washed, excess salt is removed, does
Air-flow crushing is carried out after dry, electroconductive resin is introduced simultaneously crushing, final conductivity type titanium white is obtained.
The present invention's is a kind of based on the method that process of surface treatment prepares conductivity type titanium white is improved, and detailed process is as follows：
(1) raw material is crushed after titanium white is calcined, and it is 800~1500g/L slurries to spend ion water making into concentration, adds silicic acid
Sodium solution is as dispersant, and pH controls are 9.5~11, are ground scattered；
(2) scattered slurry is added into sand mill, flow is controlled in 8.3~11.1m3/ h, further reduces particle diameter；
(3) it is 300~350g/L by pulp dilution obtained by step (2) to concentration, is warming up to 75~80 DEG C, and keep the temperature
Degree；
(4) acid sn-containing compound solution is added, pH to 4.5~5.5, the Plus acidic sn-containing compound solution of institute and step is adjusted
Suddenly the mass ratio of slurry obtained by (3) is 0.5~1.0%, cures 1~1.5h；
(5) aluminum salt solution is added, pH to 5.5~6.5, the quality of added aluminum salt solution and slurry obtained by step (4) is adjusted
Than for 2.0~3.0%, curing 1~1.5h；
(6) acid zinc compound solution, the matter of the Plus acidic zinc compound solution of institute and step (5) gained slurry are added
Amount makes pH to 4.5~5.5 than being 0.5~1.0%, cures 1~2h；
(7) aqueous slkali is added, makes the pH to 7.0~7.5 of slurry obtained by step (6)；
(8) with 45~60 DEG C of deionized water filtration washing step (7) gained slurry, it is dried and air-flow crushing,
Organic surface treatment electroconductive resin is added in Crushing with Jet Mill, conductivity type titanium white is made.
Further, raw material after step (1) the titanium white calcining, rutile titanium dioxide content is more than 99%.
Further, step (4) the acid sn-containing compound is stannic chloride, STANNOUS SULPHATE CRYSTALLINE, nitric acid tin, sn-containing compound
Concentration is with SnO2Meter.
Further, step (5) described aluminium salt is aluminum sulfate, aluminum nitrate, alchlor, and aluminum salt solution concentration is with Al2O3
Meter.
Further, step (6) the acid zinc compound is zinc chloride, zinc sulfate, nitric acid tin, zinc compound
With ZnO2Meter.
Further, step (7) described aqueous slkali is sodium hydroxide solution or ammoniacal liquor.
Further, step (8) described electroconductive resin is epoxy resin or conducting polypropylene resin.
Further, the sodium silicate solution and the mass ratio of slurry added in step (1) is 3~5 ‰, sodium silicate solution
Concentration be 100~200g/L；It is intended in 1~1.5h add corresponding solution, and acid stanniferousization in step (4)-(6)
The concentration of polymer solution, aluminum salt solution and acid zinc compound solution is 50~100g/L；In step (7) will 0.5~
Aqueous slkali is added in 1h, the concentration of the aqueous slkali is 50~100g/L.
Further, the dosage of electroconductive resin accounts for the 2 ‰ of semi-finished product titanium dioxide in step (8)；It is conductive in electroconductive resin
The mass percent concentration of particle is 40%.
3. beneficial effect
The technical scheme provided using the present invention, compared with existing known technology, with following remarkable result：
(1) a kind of method that conductivity type titanium white is prepared based on improvement process of surface treatment of the invention, in Producing Titanium Dioxide,
Inorganic surface treatment, organic surface treating formula are improved, by coating the conduction materials such as tin-oxide, aluminum oxide, zinc oxide
Material, adds the stronger electroconductive resin of conductive capability, and turning into titanium white has conducting function filler, for electric conductivity anticorrosive paint
In, with good sheet resistance and acid and alkali-resistance, gasoline ability；
(2) a kind of method that conductivity type titanium white is prepared based on improvement process of surface treatment of the invention, its titanium white used
Raw material rutile titanium dioxide content is more than 99% after calcining, and such a raw material has the low spy of high conversion rate, good weatherability, viscosity
Point, slurry concentration can control larger concentration when especially producing, and can greatly improve production efficiency；
(3) a kind of method that conductivity type titanium white is prepared based on improvement process of surface treatment of the invention, by entering to titanium white
Go and crush, add dispersant sodium metasilicate, adjust slurry pH, titanium white particle is preferably disperseed in the solution；Slurry is entered and is sanded
Machine wet-milling, makes slurry reach the titanium white dispersion of certain fineness, it is ensured that Surface of Titanium Dioxide processing coating when in water optimum dispersion shape
State；
(4) a kind of method for preparing conductivity type titanium white based on improvement process of surface treatment of the invention, is added into slurry
Acid sn-containing compound solution, pH is to 4.5~5.5 for regulation, sn-containing compound can be promoted to hydrolyze, make tin oxide in Surface of Titanium Dioxide
Compact oxidation layer is formed, first layer cladding is provided for titanium white, improves electric conductivity；Again under mild acid conditions, coated aluminum oxide film is carried
High its mobile performance and weatherability；It is last to coat zinc compound under the conditions of pH is 4.5~5.5, it is further ensured that its is conductive
Ability；Electroconductive resin is added among air-flow crushing, then can cause product that there is preferably conductive antistatic accumulation ability.
Brief description of the drawings
Fig. 1 is the flow chart that conductivity type titanium white is prepared based on improvement process of surface treatment of the present invention.
Embodiment
To further appreciate that present disclosure, with reference to embodiment, the invention will be further described.
Embodiment 1
A kind of method for preparing conductivity type titanium white based on improvement process of surface treatment of the present embodiment, main purpose is in titanium
In white production, inorganic surface treatment, organic surface treating formula are improved, by coating tin-oxide, aluminum oxide, zinc oxide
Deng conductive material, the stronger electroconductive resin of conductive capability is added, turning into titanium white has conducting function filler, anti-for electric conductivity
In rotten coating.The present embodiment can be realized by following process：Raw material is beaten after broken after titanium white calcining, uses sodium metasilicate
Disperseed, be sanded after grinding and carry out inorganic surface treatment to it again, cladding tin-oxide, aluminum oxide, zinc oxide change
Surface of Titanium Dioxide property.By the good rear product washing of cladding, excess salt is removed, air-flow crushing is carried out after drying, is drawn simultaneously crushing
Enter electroconductive resin, be finally reached target product.
The process that implements to the present embodiment is introduced below：
(1) after raw material is broken after titanium white is calcined, the slurry that concentration is 800g/L is made using deionized water, 3 ‰ are added
100g/L sodium metasilicate is as dispersant, and pH controls are 9.5, are ground scattered；Raw material, rutile type titanium after the titanium white calcining
Bai Hanliang is more than 99%, and such a raw material has the low feature of high conversion rate, good weatherability, viscosity, slurry when especially producing
Concentration can control larger concentration, can greatly improve production efficiency.By being crushed to titanium white, dispersant silicic acid is added
Sodium, adjusts slurry pH, titanium white particle is preferably disperseed in the solution.
(2) above-mentioned scattered slurry is added into sand mill, flow is controlled in 8.3m3/ h, further reduces particle diameter, increase
Dispersiveness；Slurry is entered into sand mill wet-milling, slurry is reached the titanium white dispersion of certain fineness, it is ensured that Surface of Titanium Dioxide processing bag
During film in water optimum dispersion state.
(3) it is 300g/L by pulp dilution to concentration, is warming up to 75 DEG C, and keep its temperature；
(4) in 1h, 50g/L tin chloride solutions are added, pH to 4.5 is adjusted, the mass ratio with slurry obtained by step (3) is
0.5%, cure 1h；Tin chloride solution is added into slurry, pH is to 4.5 for regulation, stannic chloride can be promoted to hydrolyze, tin oxide is existed
Surface of Titanium Dioxide formation compact oxidation layer, provides first layer cladding for titanium white, improves electric conductivity.
(5) in 1h, 50g/L aluminum nitrate solutions are added, pH to 5.5 is adjusted, the mass ratio with slurry obtained by step (4) is
2.0%, cure 1h；Adjust pH to 5.5, under mild acid conditions, coated aluminum oxide film, it is possible to increase titanium white mobile performance and weather-proof
Property.
(6) in 1h, 50g/L liquor zinci chloridis are added, the mass ratio with slurry obtained by step (5) is 0.5%, makes pH extremely
4.5, cure 1h；Zinc compound is coated under the conditions of pH is 4.5, titanium white conductive capability is further ensured that.
(7) in 0.5h, 50g/L sodium hydroxide solutions is added, make pH to 7.0~7.5；
(8) slurries filtration is washed with 45 DEG C of deionized water, be dried, air-flow crushing is added in air-flow crushing
Organic surface treatment conductive epoxy resin (concentration is 40%), dosage is 2 ‰, and epoxy resin is added among air-flow crushing,
It can then make to be made conductivity type titanium white product with preferably conductive antistatic accumulation ability.
Embodiment 2
A kind of method for preparing conductivity type titanium white based on improvement process of surface treatment of the present embodiment, implements process such as
Under：
(1) after raw material is broken after titanium white is calcined, 1000g/L slurries are made using deionized water, 4 ‰ 150g/L silicon are added
Sour sodium is as dispersant, and pH controls are 10.5, are ground scattered；
(2) above-mentioned scattered slurry is added into sand mill, flow is controlled in 10.1m3/ h, further reduces particle diameter, increases
Plus dispersiveness；
(3) by pulp dilution to 310g/L, 78 DEG C are warming up to, and keep its temperature；
(4) in 1.2h, 80g/L sulfuric acid solution of tin is added, pH to 5.0 is adjusted, the mass ratio with slurry obtained by step (3)
For 0.8%, curing 1.2h；
(5) in 1.2h, 80g/L aluminum sulfate solutions are added, the mass ratio with slurry obtained by step (4) is 2.5%, regulation
PH to 6.0, cures 1.2h；
(6) in 1.2h, 80g/L solution of zinc sulfate is added, the mass ratio with slurry obtained by step (5) is 0.8%, makes pH
To 5.0,1.2h is cured；
(7) in 0.8h, 80g/L sodium hydroxide solutions is added, make pH to 7.2；
(8) slurries filtration is washed with 55 DEG C of deionized water, be dried, air-flow crushing is added in air-flow crushing
Organic surface treatment conducting polypropylene resin (concentration is 50%), dosage is 3 ‰, and conductivity type titanium white product is made.
Embodiment 3
A kind of method for preparing conductivity type titanium white based on improvement process of surface treatment of the present embodiment, implements process such as
Under：
(1) after raw material is broken after titanium white is calcined, 1500g/L slurries are made using deionized water, 5 ‰ 200g/L silicon are added
Sour sodium is as dispersant, and pH controls are 11, are ground scattered；
(2) above-mentioned scattered slurry is added into sand mill, flow is controlled in 11.1m3/ h, further reduces particle diameter, increases
Plus dispersiveness；
(3) by pulp dilution to 350g/L, 80 DEG C are warming up to, and keep its temperature；
(4) in 1.5h, add 100g/L nitric acid solution of tin, adjust pH to 5.5, with step 3) gained slurry mass ratio
For 1.0%, curing 1.5h；
(5) in 1.5h, add 100g/L aluminum trichloride solutions, adjust pH to 6.5, with step 4) gained slurry quality
Than for 3.0%, curing 1.5h；
(6) in .5h, add 100g/L zinc nitrate solutions, make pH to 5.5, with step 5) gained slurry mass ratio be
1.0%, cure 2h；
(7) in 1h, 100g/L ammonia spirits is added, make pH to 7.0~7.5；
(8) slurries filtration is washed with 60 DEG C of deionized water, be dried, air-flow crushing is added in air-flow crushing
Organic surface treatment conductive epoxy resin (concentration is 40~60%), dosage is 4 ‰, and new titanium white product is made.
Contrasting detection illustrates and result
The titanium white product that embodiment 1-3 is obtained, it is anti-in electric conductivity to it by applicating evaluating with other in the market products
Rotten coating property is detected, judges advantage of the present invention compared with other products.
| Evaluate production code member | Sheet resistance (Ω) | Acid resistance (h) | Alkali resistance (h) | Petrol-resistance (h) |
| Embodiment 1 | 109 | 188 | 175 | 179 |
| Embodiment 2 | 1010 | 190 | 189 | 180 |
| Embodiment 3 | 108 | 169 | 176 | 165 |
| Control sample 1 | 104 | 175 | 168 | 148 |
| Control sample 2 | 104 | 178 | 170 | 157 |
Note：Market sale titanium white product of the control sample 1 with control sample 2 to randomly select.
It can be drawn from testing result, these three samples of embodiment 1,2,3 are in sheet resistance, acid resistance, alkali resistance, resistance to vapour
This several performance of oiliness are better than two kinds of products of commercial type, and wherein embodiment 2 is optimal, with good sheet resistance and
Acid and alkali-resistance, gasoline ability.
Claims (10)
1. a kind of method that conductivity type titanium white is prepared based on improvement process of surface treatment, it is characterised in that：It is former after titanium white is calcined
Material is beaten after broken, is disperseed using sodium silicate solution, and inorganic surface treatment is carried out to it again after grinding is sanded, and is coated
Tin-oxide, aluminum oxide, zinc oxide, change Surface of Titanium Dioxide property, and the good rear product of cladding is washed, excess salt is removed,
Air-flow crushing is carried out after drying, electroconductive resin is introduced simultaneously crushing, final conductivity type titanium white is obtained.
2. a kind of method that conductivity type titanium white is prepared based on improvement process of surface treatment according to claim 1, its feature
It is：The detailed process for preparing conductivity type titanium white is as follows：
(1) raw material is crushed after titanium white is calcined, and it is 800~1500g/L slurries to spend ion water making into concentration, adds sodium metasilicate molten
Liquid is as dispersant, and pH controls are 9.5~11, are ground scattered；
(2) scattered slurry is added into sand mill, flow is controlled in 8.3~11.1m3/ h, further reduces particle diameter；
(3) it is 300~350g/L by pulp dilution obtained by step (2) to concentration, is warming up to 75~80 DEG C, and keep the temperature；
(4) acid sn-containing compound solution is added, pH to 4.5~5.5, the Plus acidic sn-containing compound solution of institute and step is adjusted
(3) mass ratio of gained slurry is 0.5~1.0%, cures 1~1.5h；
(5) aluminum salt solution is added, pH to 5.5~6.5 is adjusted, the mass ratio of added aluminum salt solution and slurry obtained by step (4) is
2.0~3.0%, cure 1~1.5h；
(6) acid zinc compound solution, the mass ratio of the Plus acidic zinc compound solution of institute and step (5) gained slurry are added
For 0.5~1.0%, make pH to 4.5~5.5, cure 1~2h；
(7) aqueous slkali is added, makes the pH to 7.0~7.5 of slurry obtained by step (6)；
(8) with 45~60 DEG C of deionized water filtration washing step (7) gained slurry, it is dried and air-flow crushing, in air-flow
Organic surface treatment electroconductive resin is added in crushing process, conductivity type titanium white is made.
3. a kind of method that conductivity type titanium white is prepared based on improvement process of surface treatment according to claim 2, its feature
It is：Raw material after step (1) the titanium white calcining, rutile titanium dioxide content is more than 99%.
4. a kind of method that conductivity type titanium white is prepared based on improvement process of surface treatment according to claim 2, its feature
It is：Step (4) the acid sn-containing compound is stannic chloride, STANNOUS SULPHATE CRYSTALLINE, nitric acid tin, and sn-containing compound concentration is with SnO2Meter.
5. a kind of method that conductivity type titanium white is prepared based on improvement process of surface treatment according to claim 2, its feature
It is：Step (5) described aluminium salt is aluminum sulfate, aluminum nitrate, alchlor, and aluminum salt solution concentration is with Al2O3Meter.
6. a kind of method that conductivity type titanium white is prepared based on improvement process of surface treatment according to claim 2, its feature
It is：Step (6) the acid zinc compound is zinc chloride, zinc sulfate, nitric acid tin, and zinc compound is with ZnO2Meter.
7. a kind of method that conductivity type titanium white is prepared based on improvement process of surface treatment according to claim 2, its feature
It is：Step (7) described aqueous slkali is sodium hydroxide solution or ammoniacal liquor.
8. a kind of method that conductivity type titanium white is prepared based on improvement process of surface treatment according to claim 2, its feature
It is：Step (8) described electroconductive resin is epoxy resin or conducting polypropylene resin.
9. a kind of side that conductivity type titanium white is prepared based on improvement process of surface treatment according to any one of claim 2~8
Method, it is characterised in that：The sodium silicate solution and the mass ratio of slurry added in step (1) is 3~5 ‰, sodium silicate solution it is dense
Spend for 100~200g/L；It is intended in 1~1.5h add corresponding solution, and the acid sn-containing compound in step (4)-(6)
The concentration of solution, aluminum salt solution and acid zinc compound solution is 50~100g/L；Will be in 0.5~1h in step (7)
Aqueous slkali is added, the concentration of the aqueous slkali is 50~100g/L.
10. a kind of method that conductivity type titanium white is prepared based on improvement process of surface treatment according to claim 9, its feature
It is：The dosage of electroconductive resin accounts for the 2 ‰ of semi-finished product titanium dioxide in step (8)；The quality percentage of conducting particles in electroconductive resin
Specific concentration is 40%.
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| CN201710522524.0A CN107216687A (en) | 2017-06-30 | 2017-06-30 | A kind of method that conductivity type titanium white is prepared based on improvement process of surface treatment |
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| CN201710522524.0A CN107216687A (en) | 2017-06-30 | 2017-06-30 | A kind of method that conductivity type titanium white is prepared based on improvement process of surface treatment |
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| CN201710522524.0A Pending CN107216687A (en) | 2017-06-30 | 2017-06-30 | A kind of method that conductivity type titanium white is prepared based on improvement process of surface treatment |
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Application publication date: 20170929 |