KR101058379B1 - A method for preparing flake-type titanic acid whiskers and flake-type titanic acid whiskers prepared by the same - Google Patents
A method for preparing flake-type titanic acid whiskers and flake-type titanic acid whiskers prepared by the same Download PDFInfo
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- KR101058379B1 KR101058379B1 KR1020100066816A KR20100066816A KR101058379B1 KR 101058379 B1 KR101058379 B1 KR 101058379B1 KR 1020100066816 A KR1020100066816 A KR 1020100066816A KR 20100066816 A KR20100066816 A KR 20100066816A KR 101058379 B1 KR101058379 B1 KR 101058379B1
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- titanic acid
- whisker
- titanate
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- flake
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- 238000000034 method Methods 0.000 title claims abstract description 47
- LLZRNZOLAXHGLL-UHFFFAOYSA-J titanic acid Chemical compound O[Ti](O)(O)O LLZRNZOLAXHGLL-UHFFFAOYSA-J 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 claims abstract description 32
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims abstract description 26
- 238000001354 calcination Methods 0.000 claims abstract description 25
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 17
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 14
- 229910000027 potassium carbonate Inorganic materials 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 12
- 150000003609 titanium compounds Chemical class 0.000 claims abstract description 12
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000000465 moulding Methods 0.000 claims description 3
- 239000004408 titanium dioxide Substances 0.000 claims description 3
- 239000002904 solvent Substances 0.000 abstract description 9
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 30
- SWHAQEYMVUEVNF-UHFFFAOYSA-N magnesium potassium Chemical compound [Mg].[K] SWHAQEYMVUEVNF-UHFFFAOYSA-N 0.000 description 16
- 239000002994 raw material Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 7
- 229910052749 magnesium Inorganic materials 0.000 description 7
- 239000011777 magnesium Substances 0.000 description 7
- 238000003786 synthesis reaction Methods 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 4
- 239000006184 cosolvent Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 229910052700 potassium Inorganic materials 0.000 description 4
- 239000011591 potassium Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 229910010413 TiO 2 Inorganic materials 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 3
- 239000000347 magnesium hydroxide Substances 0.000 description 3
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 2
- 238000007580 dry-mixing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- -1 military Substances 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- YXTPWUNVHCYOSP-UHFFFAOYSA-N bis($l^{2}-silanylidene)molybdenum Chemical compound [Si]=[Mo]=[Si] YXTPWUNVHCYOSP-UHFFFAOYSA-N 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- HZZOEADXZLYIHG-UHFFFAOYSA-N magnesiomagnesium Chemical compound [Mg][Mg] HZZOEADXZLYIHG-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910021344 molybdenum silicide Inorganic materials 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
Images
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-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J6/00—Heat treatments such as Calcining; Fusing ; Pyrolysis
- B01J6/001—Calcining
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/003—Titanates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
- F16D69/027—Compositions based on metals or inorganic oxides
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
Provided is a method for preparing flaky titanic acid whiskers and a flaky titanic acid whisker produced thereby.
Method for producing flaky titanic acid whisker according to the present invention comprises the steps of mixing a titanium compound, potassium carbonate and magnesium oxide; Calcining the mixture to 900 to 1100 ° C .; And crushing the calcined mixture. The method for preparing flaky titanic whiskers according to the present invention does not use solvents or strong bases. By using no solvents, the manufacturing cost is lowered, and the manufacturing process is simplified, and the economic efficiency is improved.
Description
The present invention relates to a method for producing flaky titanic acid whiskers and to a flaky titanic acid whisker produced thereby, more specifically, it does not use solvents or strong bases, thereby reducing corrosion on equipment and reducing manufacturing costs by not using coarse solvents. The present invention relates to a method for preparing a flaky titanic whisker which has been lowered and has improved economic efficiency by simplifying the manufacturing process, and a titanic acid whisker produced thereby.
Whisker titanates have excellent mechanical performance due to various physicochemical performances due to the unique tunnel structure of the material. For example, due to high infrared reflectance, low thermal conductivity, high abrasion resistance, electrical insulation and dielectric constant, and high chemical stability, the application range is wide, especially in the automotive industry. In particular, potassium magnesium titanate containing potassium and magnesium as a flaky whisker is used as a brake pad of a luxury car as a friction material, and the expected demand for this brake pad in 2010 is about 2700 × 10 4 . This corresponds to 1280 tonnes of potassium magnesium titanate. In addition, applications in thermal insulation, heat / insulation materials and building materials are expected to exceed approximately 10,000 tonnes.
In addition, thermoplastics and thermoplastic composites reinforced with potassium magnesium titanate are ideal materials for automobile manufacturing and various precision instruments. According to statistics, plastic demand in China's auto industry is about 93.54 × 10 4 tons in 2010. In addition, other performance characteristics of potassium magnesium titanate whiskers are constantly being developed and used in the fields of paint, military, chemical industry, and paper.
However, a high temperature and basic environment is required in the synthesis process, and a high production cost is required because the use of a coarse solvent requires a large amount of equipment, and a subsequent treatment such as brine washing is required. Therefore, application of potassium magnesium titanate at home and abroad is required. This is limited.
The production method of such whisker titanate includes a calcination method, an improved calcination method (KDC method, a rapid cooling calcining method, a slow cooling calcining method), a hydrothermal method, a melting method, a coarse solvent method, and a crushing method. Among them, the calcination method and the improved calcination method are used as the main production method of the titanic acid whisker because the manufacturing process is simple and mass production is possible, and more than half of the titanic acid whiskers are manufactured by the above method.
The calcination method based titanic acid whisker production according to the prior art is generally disclosed as a process of mixing the potassium source compound and the titanium compound in a constant molar ratio. That is, according to the conventional method, potassium magnesium titanate, a whisker titanate, is made of TiO 2 , a titanate, and K 2 CO 3 (potassium carbonate), which is a potassium source, and an appropriate amount of auxiliary components (e.g., co-solvent) is added, and then, at high temperature. It is produced by calcination and complex processing. For example, Korean Patent No. 10-0732278 (hereinafter referred to as "the prior art") of Otsuka Chemical Co., Ltd. is fixed after mixing 294 g of titanium dioxide with 128 g of anhydrous potassium carbonate, 200 g of KCl, 56 g of magnesium hydroxide, and 40 mg of water. After pressing into a shape, it is calcined at 1050 ° C. for 1 hour, pulverized, washed with an acid of a certain pH, dried and calcined at 600 ° C. for 12 hours. However, such a prior art process is complicated, long cycle, and also used a large amount of co-solvent KCl and strong basic magnesium hydroxide during the synthesis process, causing the corrosion of the equipment at high temperature conditions. Accordingly, there is a need for development of a method for producing a whisker titanate in a more economical manner.
It is therefore an object of the present invention to provide a method for producing a whisker in the form of a plate which is capable of producing potassium magnesium titanate whisker in a short cycle in a more economical manner.
Another problem to be solved by the present invention is to provide a titanic acid whisker in the form of pieces prepared by the above method.
In order to solve the above problems, the present invention provides a flaky whisker production method, the method comprising the steps of mixing a titanium compound, potassium carbonate and magnesium oxide; Calcining the mixture to 900 to 1100 ° C .; And crushing the calcined mixture to provide a method for preparing flaky titanic acid whiskers.
In one embodiment of the present invention further comprises the step of forming the mixed mixture in a predetermined form between the mixing step and the calcination step, the calcination step is a microwave heating method is used. In addition, the titanium compound is rutile titanium dioxide, fusiform or brookite titanium dioxide, preferably rutile titanium dioxide.
The titanium compound, potassium carbonate and magnesium oxide are mixed in a mass ratio of 40:20:10 to 20, and more preferably the titanium compound, potassium carbonate and magnesium oxide are mixed in a mass ratio of 40:20:15. In addition, the mass ratio of the mixed raw materials can be adjusted within the range of ± 10% by weight, the calcination step is carried out for 0.2 to 3 hours.
The present invention also provides a flaky titanic acid whisker produced by the above-described method, wherein the whisker titanate is potassium magnesium titanate, and the whisker titanate is rutile titanium dioxide (China Gansu or Jinan Heungsan), potassium carbonate And calcined from a mixture of magnesium oxide.
According to the method for producing a whisker titanate according to the present invention, since the solvent and the strong base are not used, the corrosion of the equipment can be reduced, and the manufacturing cost is reduced by not using the co-solvent, and the economic efficiency is improved by simplifying the manufacturing process. In addition, the use of microwave, a non-contact heating method can solve the problem of corrosion, replacement of the heating equipment.
1 is an SEM image of flaky potassium titanate prepared according to an embodiment of the present invention.
FIG. 2 is an SEM image of flaky potassium magnesium titanate prepared according to another embodiment of the present invention. FIG.
The present invention is to synthesize a titanate whisker as a new synthetic production technology in order to solve the problems of the prior art. In the present specification, potassium titanate containing potassium and magnesium is used as the whisker titanate, but the scope of the present invention is not limited thereto, and any new metal may be contained in the whisker titanate, which is also described below. As long as the production method according to the present invention is followed, it is within the scope of the present invention.
Since the method for producing whisker titanate according to the present invention does not use coarse solvents or strong bases during the synthesis process, it is possible to reduce corrosion on equipment and at the same time lower raw material costs (coating solvents), and the manufacturing process is simplified compared to the prior art. In addition, the production cost of the titanic acid whisker was lowered by activating / accelerating the synthesis reaction by a micro heating or a heating calcination process performed under micro assistance.
In one embodiment of the present technology, a magnesium titanate whisker was prepared by the following method.
First, a titanium compound (rutile titanium dioxide), potassium carbonate, and magnesium oxide are mixed as raw materials, and the mixture is calcined at high temperature to primarily prepare flaky magnesium titanate. That is, the present invention uses magnesium oxide (eg, industrially active magnesium oxide (magnesium oxide)) as a magnesium source, and not magnesium hydroxide, and in one embodiment of the present invention, the calcination process is performed by micro heating alone or This was used as a supplemental way.
Specific synthesis process of potassium magnesium titanate according to an embodiment of the present invention is as follows.
First, titanium dioxide (TiO 2 ), potassium carbonate and magnesium oxide are sufficiently mixed in a mass ratio of 40: 20: 10 to 20, and water is appropriately added to the mixing process to form the mixture. The mixing may be dry mixing, wet mixing, or dry mixing after wet mixing, and the molding is pressed into an arbitrary shape at an appropriate pressure. If the amount of water added during mixing is large, the raw material may be molded as it is without pressure.
In the present invention, the ratio of 40:20:15 is shown as a mass ratio of the three raw materials, which are particularly suitable for the synthesis of flaky potassium magnesium titanate. When the content of magnesium oxide decreases, the content of rod-like and particulate potassium titanate (magnesium) in the synthetic product increases, and the mass ratio of the three raw materials can be adjusted within a range of ± 10 mass%. Magnesium oxide in the raw material is better the smaller the particle size, it can be selected as a high purity industrial activated magnesium oxide (light magnesium) as the magnesium oxide.
Thereafter, the mixture is molded into a predetermined shape and then calcined at 900 to 1100 ° C. for 0.2 to 3 hours. The high temperature calcination may be used in general electric heating, silicon carbide or molybdenum silicide heating, etc., in one embodiment of the present invention, the calcination process is heated under micro heating or micro-auxiliary conditions. It is possible that the micro heating can activate / accelerate the reaction of the production of potassium magnesium titanate to lower the calcination temperature, and also to shorten the calcination time and save energy. The mixture of potassium magnesium titanate and potassium magnesium titanate of the present invention can absorb microwaves and generate heat quickly, and if necessary, an absorbent material can be added separately. Therefore, the calcination equipment of the titanic acid whisker manufacturing apparatus according to the present invention may include a microwave heating furnace.
Thereafter, the calcined molding is pulverized, and the pulverized titanic whisker pulverized after the pulverizing process may be washed and dried. The high temperature calcining proceeds directly at 900 to 1100 ° C. for 0.2 to 3 hours. The pulverization may be used a variety of pulverizers, such as a drum-type crusher, it is preferable to use a jaw crusher during the washing and drying after the crushing. In the treatment of the calcined product may proceed directly to the grinding method, and may also proceed to the washing / drying method or acidic water washing drying method after grinding. Alkaline, dilute hydrochloric acid, or dilute acetic acid can be used for washing the water, and the pH value is 7 to 8.5. In the calcination process, about 15 wt% to 50 wt% of KCl may be added to the total mass ratio of the three raw materials. The addition of KCl and the acid wash process affect the final whiteness of the product.
In the case of producing potassium magnesium titanate according to the method for producing whiskers according to the present invention as described above, since both strong bases and cosolvents may not be used as raw materials, there is no corrosion on the equipment in the synthesis process, raw material consumption is low, and the process is low. Simple, suitable for large scale production, and low manufacturing cost.
Hereinafter, a method for preparing titanic acid whiskers according to various embodiments of the present invention will be described in more detail.
Example 1
1) The titanic acid compound (rutile titanium dioxide (TiO 2 ) or domestic titanium dioxide (TiO 2 ) from China (Shanghai)), potassium carbonate and magnesium oxide were sufficiently mixed in a mass ratio of 40:20:15, and an appropriate amount of water was added thereto. . After drying, it was ground.
2) The ground mixture of step 1) was calcined by microwave at 1050 ° C. for 1 hour, cooled in a furnace to 400 ° C. and then cooled by air.
3) Subsequently, the calcination product of step 2) was pulverized to prepare flaky potassium titanate shown in FIG. 1.
Referring to Figure 1, it can be seen that the magnesium magnesium titanate prepared according to the present embodiment has excellent uniformity as a flaky form.
Example 2
1) Titanium compound (China (Jinan Yeoheung) acid or domestic rutile titanium dioxide (TiO 2 )), potassium carbonate and magnesium oxide are sufficiently mixed in a mass ratio of 40:20:15, and an appropriate amount of water is added and 10 MPa pressure is applied. Pressurized to form a pillar shape of 3cm in diameter, 3cm in height.
2) The molded product of step 1) was calcined in a microwave at 1050 ° C. for 1 hour, cooled to 400 ° C. in a furnace, and then air cooled.
3） Crush the resulting calcined product of step 2), wash with acidic water and dry. The photograph of the plate-shaped potassium titanate obtained from this is as shown in FIG.
2, it can be seen that the plate-shaped potassium magnesium titanate is more finely prepared than in FIG.
Claims (12)
Mixing the titanium compound, potassium carbonate and magnesium oxide mixed in a mass ratio of 40:20:10 to 20;
Calcining the mixture at 900 to 1100 ° C. by microwave heating; And
And crushing the calcined mixture.
The method of claim 1, further comprising the step of molding the mixed mixture in a predetermined form between the mixing step and the calcining step.
The titanium compound is a rutile type, fusiform or brookite type titanium dioxide whisker manufacturing method, characterized in that.
The titanium compound is a rutile titanium dioxide whisker production method, characterized in that the.
And said titanium compound, potassium carbonate and magnesium oxide are mixed in a mass ratio of 40:20:15.
The calcination step is flaky titanic acid whisker manufacturing method, characterized in that performed for 0.2 to 3 hours.
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|---|---|---|---|
| KR1020100066816A KR101058379B1 (en) | 2010-07-12 | 2010-07-12 | A method for preparing flake-type titanic acid whiskers and flake-type titanic acid whiskers prepared by the same |
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| KR1020100066816A KR101058379B1 (en) | 2010-07-12 | 2010-07-12 | A method for preparing flake-type titanic acid whiskers and flake-type titanic acid whiskers prepared by the same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101319298B1 (en) | 2011-09-29 | 2013-10-18 | 국방과학연구소 | Titanium dioxide nanowhickers and method of producing the same by using a cycling heat treatment |
| KR102080505B1 (en) * | 2019-08-13 | 2020-02-24 | 주식회사 경남케미컬 | Potassium titanate and method for producing thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004316904A (en) | 2003-03-31 | 2004-11-11 | Tokico Ltd | Friction material for brake |
| JP2009280499A (en) * | 2009-09-01 | 2009-12-03 | Otsuka Chem Co Ltd | Plate-like potassium tetratitanate, its production method and friction material |
-
2010
- 2010-07-12 KR KR1020100066816A patent/KR101058379B1/en active IP Right Grant
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004316904A (en) | 2003-03-31 | 2004-11-11 | Tokico Ltd | Friction material for brake |
| JP2009280499A (en) * | 2009-09-01 | 2009-12-03 | Otsuka Chem Co Ltd | Plate-like potassium tetratitanate, its production method and friction material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101319298B1 (en) | 2011-09-29 | 2013-10-18 | 국방과학연구소 | Titanium dioxide nanowhickers and method of producing the same by using a cycling heat treatment |
| KR102080505B1 (en) * | 2019-08-13 | 2020-02-24 | 주식회사 경남케미컬 | Potassium titanate and method for producing thereof |
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