CN108706605B - Preparation method of quaternary ammonium salt modified organic magnesium aluminum silicate for thickening oily system - Google Patents
Preparation method of quaternary ammonium salt modified organic magnesium aluminum silicate for thickening oily system Download PDFInfo
- Publication number
- CN108706605B CN108706605B CN201810635477.5A CN201810635477A CN108706605B CN 108706605 B CN108706605 B CN 108706605B CN 201810635477 A CN201810635477 A CN 201810635477A CN 108706605 B CN108706605 B CN 108706605B
- Authority
- CN
- China
- Prior art keywords
- parts
- quaternary ammonium
- aluminum silicate
- ammonium salt
- magnesium aluminum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/20—Silicates
- C01B33/36—Silicates having base-exchange properties but not having molecular sieve properties
- C01B33/38—Layered base-exchange silicates, e.g. clays, micas or alkali metal silicates of kenyaite or magadiite type
- C01B33/44—Products obtained from layered base-exchange silicates by ion-exchange with organic compounds such as ammonium, phosphonium or sulfonium compounds or by intercalation of organic compounds, e.g. organoclay material
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Inorganic Chemistry (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Lubricants (AREA)
Abstract
The invention discloses an oily systemThe preparation method of quaternary ammonium salt modified organic magnesium aluminum silicate for thickening is characterized in that montmorillonite in nature is used as a reaction base material, and PO is prepared by high-temperature solid-phase reaction4 3‑The rare earth modified montmorillonite is subjected to quaternary ammonium salt intercalation modification, so that the organic magnesium aluminum silicate with strong expansibility, high viscosity and high thickening force in an oily system is produced, and the application prospect of the organic magnesium aluminum silicate in the industries of paint, printing ink, high-temperature lubricating grease and the like is very bright.
Description
Technical Field
The invention relates to the field of organic bentonite, in particular to a preparation method of high-viscosity high-thickening-capacity organic magnesium aluminum silicate suitable for industries such as paint, printing ink, adhesive and the like.
Background
For many years, the research on the intercalation exchange reaction of montmorillonite and quaternary ammonium salt in bentonite has been one of the research hotspots in the related field. Although the scientific name of montmorillonite is called magnesium aluminum silicate, bentonite concentrate with the purity of magnesium aluminum silicate not higher than 95 percent is commonly called montmorillonite among people, and only the bentonite concentrate with the purity higher than 95 percent is called magnesium aluminum silicate. Part A1 in the aluminoxy octahedral layer in the magnesium aluminium silicate structure3+Is coated with Mg2+Instead, the magnesium aluminum silicate layer is negatively charged, and to balance this negative charge, some metal ions (e.g., Na) are present in the environment+、K+、Ca2+、Mg2+Etc.) into the magnesium aluminum silicate interlayer, these ions can be replaced by organic quaternary ammonium salt cations through ion exchange reactions. After the cations of the organic quaternary ammonium salt enter the magnesium aluminum silicate layers, the physical and chemical properties and the performance of the magnesium aluminum silicate can be obviously changed, namely the so-called organic magnesium aluminum silicate (mainly called as 'organic bentonite' or 'organic montmorillonite' in folk) is formed.
The organic magnesium aluminum silicate is an important fine chemical product prepared by deep processing natural bentonite, and has oleophylic and hydrophobic characteristics, and shows good dispersibility, swellability and emulsibility in an organic solvent, so that the organic magnesium aluminum silicate is widely applied to the industrial fields of paint, printing ink, high-temperature lubricating grease, petroleum drilling, pesticides and the like. In particular, the organic magnesium silicate-alumina can form gel in various organic solvents, oils and liquid resins, and has the advantages of good thickening property, thixotropy, suspension stability, chemical stability and the like, so that the organic magnesium silicate-alumina serving as an efficient thickening agent has important application value in the industries of paint, ink and the like, and has been widely applied for many years.
Although the development, research and mature application of organic magnesium aluminum silicate has been nearly half a century abroad, there are 3 serious problems of organic magnesium aluminum silicate that have not been overcome:
(1) because magnesium aluminum silicate has low electronegativity, the intercalation amount of organic quaternary ammonium salt cations is low, and the hydrophobic oleophilic property of the organic magnesium aluminum silicate needs to be further improved.
(2) Because the interlayer bonding force of the aluminum magnesium silicate is larger, the expansion degree of the organic aluminum magnesium silicate in an oily system (such as xylene and the like) is limited, and the thickening and tackifying capability of the organic aluminum magnesium silicate is directly lower than that of the inorganic aluminum magnesium silicate in an aqueous system.
(3) Long-chain hydrocarbon molecules in organic quaternary ammonium salt cations inserted between layers easily extend out of the interlayer region, so that a part of side parts with positive charges are shielded, a 'card house' type gel structure is difficult to form, and the thickening and tackifying capability of the organic magnesium aluminum silicate in an oily system is further low.
Therefore, how to produce the organic magnesium aluminum silicate with high tackifying and thickening capabilities in an oily system is a key technical problem which needs to be overcome urgently in related industries at home and abroad at present.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a synthesis method capable of producing organic magnesium aluminum silicate with high thickening capacity. The synthesis method firstly prepares PO by high-temperature solid-phase reaction4 3-And then carrying out quaternary ammonium salt intercalation modification on the montmorillonite, thereby producing the organic magnesium aluminum silicate with strong expansibility, large viscosity and high thickening force in an oily system.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of quaternary ammonium salt modified organic magnesium aluminum silicate for thickening an oily system is characterized by comprising the following steps: the preparation method comprises the following steps of:
(1) firstly, 1 ~ 5 parts of the raw materials are mixed to form a mixture, and the mass concentration of the mixture is not higher than 0.1 mol.L-1The diluted phosphoric acid aqueous solution of (1) was added to 100 parts of montmorillonite powder and stirred well, and then 1 ~ 5 parts of divalent metal oxide and 5 ~ 15 parts of rare earth were addedContinuously stirring the oxide uniformly, roasting at 150 ~ 250 deg.C for 5 ~ 15min, taking out, adding 1000 ~ 2000 parts of pure water, and stirring thoroughly until the montmorillonite is completely dispersed;
(2) adding 10 ~ 30 parts of quaternary ammonium salt into 500 ~ 800 parts of pure water, heating to 75 ~ 90 ℃ under the condition of full stirring until the quaternary ammonium salt is completely dissolved, then adding the quaternary ammonium salt solution into the montmorillonite suspension prepared in the step (1), heating to 65 ~ 85 ℃, keeping the temperature, stirring and reacting for 1 ~ 2 hours, finally stopping heating, filtering, fully washing, and fully drying a filter cake at 100 ~ 150 ℃ to obtain the organic magnesium aluminum silicate.
In the invention, the divalent metal oxide is one or any combination of beryllium oxide, magnesium oxide, copper oxide and zinc oxide; the rare earth oxide is La2O3、Ce2O3、Ln2O3One or more of the above-mentioned materials can be arbitrarily combined; the quaternary ammonium salt is one or a combination of more of octadecyl trimethyl ammonium bromide, octadecyl trimethyl ammonium chloride, dioctadecyl dimethyl ammonium bromide, dioctadecyl dimethyl ammonium chloride, dioctadecyl methyl benzyl ammonium bromide, dioctadecyl methyl benzyl ammonium chloride, octadecyl dimethyl benzyl ammonium bromide and octadecyl dimethyl benzyl ammonium chloride.
When montmorillonite is mixed with dilute phosphoric acid aqueous solution, H in dilute phosphoric acid+Firstly, the Al-O octahedron in the crystal lattice of the magnesium aluminum silicate is relatively rapidly entered, and part of Al is forced3+The crystal lattice is rapidly dissolved out, causing a certain number of holes in the octahedron. The mass concentration of the dilute phosphoric acid can not be higher than 0.1 mol.L-1Due to too high acid concentration, H+Al-O octahedra are completely corroded, resulting in collapse of an interlayer structure. During high temperature calcination, these cavities are filled with Be in the divalent metal oxide2+And divalent metal ions. This occupancy process is critical. On one hand, the electronegativity of the crystal lattice of the aluminum-magnesium silicate is obviously improved, namely the intercalation amount of the organic quaternary ammonium salt cations is obviously increased, so that the hydrophobic oleophilic property of the organic aluminum-magnesium silicate is effectively improved. On the other hand, more Be2+Divalent metal ions of equal sizeThe aluminum-magnesium silicate occupies a cavity, so that an Al-O octahedral structure is in a loose state, the degree of order of a C axis in a crystal lattice structure of the aluminum-magnesium silicate is obviously reduced, and the interlayer binding force is effectively weakened, so that the expansion resistance of the organic aluminum-magnesium silicate in an oily system is obviously reduced, namely the expansion capacity of the organic aluminum-magnesium silicate is rapidly increased.
La in rare earth oxide during high-temperature roasting3+When the rare earth metal ions enter into Si-O tetrahedron and distort during high-temperature roasting, PO in the dilute phosphoric acid is induced4 3-With Si4+Complex reaction occurs and the complex is adsorbed on the side surface of the crystal lattice structure of the magnesium aluminum silicate. PO (PO)4 3-The cross section of the functional group is large, the shielding effect of long-chain hydrocarbon molecules in quaternary ammonium salt on the side surface of a crystal lattice structure of the aluminum-magnesium silicate can be effectively prevented, so that a 'card house' type gel structure is greatly facilitated to be formed, the thickening capability of thickening the organic aluminum-magnesium silicate in an oily system is directly caused, the high-temperature roasting temperature is controlled to be 150 ~ 250 ℃, the roasting temperature is lower than 150 ℃, the PO temperature is controlled to be 150 ℃, and the roasting temperature is controlled to be lower than4 3-The distortion degree of a rare earth Si-O tetrahedron is not enough; while the roasting temperature is higher than 250 ℃, and the acidified Al-O octahedron is thoroughly destroyed.
After the quaternary ammonium salt intercalation reaction, filter cakes need to be fully dried at 100 ~ 150 ℃, different from the organic magnesium aluminum silicate obtained by the conventional intercalation process, the organic magnesium aluminum silicate generally needs to be dried at the temperature lower than 100 ℃, the drying temperature in the technical scheme of the invention cannot be lower than 100 ℃, otherwise PO4 3-The degree of distortion of the/rare earth Si-O tetrahedron is still insufficient. At the same time, the drying temperature cannot be higher than 150 ℃ because the drying temperature is too high, the layered structure easily collapses, resulting in a chain silicate structure without any expansion properties.
Different from the aluminum magnesium silicate used in the conventional intercalation reaction (an upper Si-O tetrahedron and a lower Si-O tetrahedron which are sandwiched by Al-O octahedrons; wherein part of Al in the latter is3+Is coated with Mg2+Substituted), in the magnesium aluminum silicate structure used in the intercalation reaction of the present invention, on the one hand, the Si-O tetrahedron is distorted by the penetration of rare earth ions, and PO4 3-With Si4+Complex reaction occurs and the adsorption stays at the side of the crystal lattice; on the other hand, a certain amount of Al in Al-O octahedron is2+、Mg2+Etc. and the substitution amount is obviously more than that of the conventional aluminum silicate in the nature. Compared with the prior art, the invention has the beneficial effects that:
(1) the quantity of the quaternary ammonium salt intercalation of the prepared organic magnesium aluminum silicate is obviously more than that of the quaternary ammonium salt intercalation prepared by the conventional process, so that the hydrophobic and oleophilic property of the organic magnesium aluminum silicate is obviously improved, and the organic magnesium aluminum silicate is easier to disperse and expand in an oily system.
(2) The interlayer bonding force of the prepared organic magnesium aluminum silicate is weaker, and the expansion resistance of a lamellar structure of the organic magnesium aluminum silicate in an oily system is obviously reduced, so that the expansion capacity is obviously increased.
(3) The side surface of the prepared organic magnesium aluminum silicate is effectively protected, so that the formation of a card house structure is not influenced, and the viscosity and the thickening capacity of the organic magnesium aluminum silicate in an oily system are further obviously improved.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Example 1
The quaternary ammonium salt modified organic magnesium aluminum silicate for thickening an oily system is prepared from the following raw materials in parts by mass:
(1) firstly, 1 part of the mixture with the mass concentration of 0.01 mol.L-1Adding the diluted phosphoric acid aqueous solution into 100 parts of sodium-based montmorillonite powder, uniformly stirring, and then adding 1 part of beryllium oxide and 5 parts of La2O3Stirring, and roasting at 150 deg.C for 5 min; then taking out and adding 1000 parts of pure water, and fully stirring until the montmorillonite is completely dispersed;
(2) secondly, adding 10 parts of quaternary ammonium salt octadecyl trimethyl ammonium chloride into 500 parts of pure water, heating to 75 ℃, and fully stirring until the quaternary ammonium salt is completely dissolved; then adding a quaternary ammonium salt solution into the montmorillonite suspension prepared in the step (1), heating to 65 ℃, and continuing to keep the temperature and stir for reaction for 1 hour; and finally stopping heating, filtering, fully washing, and fully drying a filter cake at 100 ℃ to obtain the organic magnesium aluminum silicate No. 1.
Example 2
The quaternary ammonium salt modified organic magnesium aluminum silicate for thickening an oily system is prepared from the following raw materials in parts by mass:
(1) firstly, 5 parts of the mixture with the mass concentration of 0.1 mol.L-1Adding the diluted phosphoric acid aqueous solution into 100 parts of montmorillonite powder, uniformly stirring, and then adding 2 parts of magnesium oxide, 3 parts of copper oxide and 10 parts of Ce2O35 parts of Ln2O3Stirring, and roasting at 250 deg.C for 15 min; then taking out and adding 2000 parts of pure water, and fully stirring until the montmorillonite is completely dispersed;
(2) secondly, adding 15 parts of dioctadecyl dimethyl ammonium chloride and 15 parts of dioctadecyl methyl benzyl ammonium chloride into 800 parts of pure water, heating to 90 ℃, and fully stirring until the quaternary ammonium salt is completely dissolved; then adding a quaternary ammonium salt solution into the montmorillonite suspension prepared in the step (1), heating to 85 ℃, and continuing to keep the temperature and stir for reaction for 2 hours; and finally stopping heating, filtering, fully washing, and fully drying a filter cake at 150 ℃ to obtain the organic magnesium aluminum silicate 2 #.
Example 3
The quaternary ammonium salt modified organic magnesium aluminum silicate for thickening an oily system is prepared from the following raw materials in parts by mass:
(1) firstly, 3 parts of the mixture with the mass concentration of 0.05 mol.L-1Adding the diluted phosphoric acid aqueous solution into 100 parts of montmorillonite powder, uniformly stirring, and then adding 1 part of magnesium oxide, 1 part of copper oxide, 1 part of zinc oxide and 3 parts of La2O33 parts of Ce2O33 parts of Ln2O3Stirring, and roasting at 200 deg.C for 10 min; then taking out and adding 1500 parts of pure water, and fully stirring until the montmorillonite is completely dispersed;
(2) secondly, adding 5 parts of octadecyl trimethyl ammonium bromide, 5 parts of dioctadecyl dimethyl ammonium bromide and 5 parts of octadecyl dimethyl benzyl ammonium chloride into 700 parts of pure water, heating to 80 ℃, and fully stirring until the quaternary ammonium salt is completely dissolved; then adding a quaternary ammonium salt solution into the montmorillonite suspension prepared in the step (1), heating to 75 ℃, and continuing to keep the temperature and stir for reaction for 1.5 h; and finally stopping heating, filtering, fully washing, and fully drying a filter cake at 120 ℃ to obtain the organic magnesium aluminum silicate 3 #.
Example 4
The quaternary ammonium salt modified organic magnesium aluminum silicate for thickening an oily system is prepared from the following raw materials in parts by mass:
(1) firstly, 3 parts of the mixture with the mass concentration of 0.08 mol.L-1Adding the diluted phosphoric acid aqueous solution into 100 parts of montmorillonite powder, uniformly stirring, and then adding 1 part of beryllium oxide, 0.5 part of magnesium oxide, 1.5 parts of copper oxide, 0.5 part of zinc oxide and 2 parts of La2O32 parts of Ce2O34 parts of Ln2O3Stirring, and roasting at 180 deg.C for 8 min; then taking out and adding 1600 parts of pure water, and fully stirring until the montmorillonite is completely dispersed;
(2) secondly, adding 5 parts of dioctadecyl dimethyl ammonium bromide, 5 parts of dioctadecyl methyl benzyl ammonium bromide, 4 parts of octadecyl dimethyl benzyl ammonium bromide and 4 parts of octadecyl dimethyl benzyl ammonium chloride into 600 parts of pure water, heating to 85 ℃, and fully stirring until the quaternary ammonium salt is completely dissolved; then adding a quaternary ammonium salt solution into the montmorillonite suspension prepared in the step (1), heating to 80 ℃, and continuing to keep the temperature and stir for reaction for 1.2 h; and finally stopping heating, filtering, fully washing, and fully drying a filter cake at 130 ℃ to obtain the organic magnesium aluminum silicate 4 #.
The prepared organic magnesium aluminum silicate 1-4 # and Bentone SD-1 and Bentone SD-3 (Elementise specialties, USA) are prepared into an organic solution with the solid content of 5% by xylene, stirred at 3000rpm for 30min at high speed and then kept stand for 1h, and then relevant tests are carried out, and the results are shown in the following table.
Table comparison test data
According to the comparison test data, the organic magnesium aluminum silicate prepared by the technical scheme of the invention has strong expansion capability, high stripping and gelling speed, high viscosity and strong thixotropy in oily systems such as dimethylbenzene and the like, and the thickening capability of the organic magnesium aluminum silicate exceeds that of similar commodities imported from abroad. Therefore, the magnesium-aluminum silicate prepared by the technical scheme of the invention can be used as an excellent tackifying thickening auxiliary agent to be directly and widely applied to industries such as paint, printing ink, high-temperature lubricating grease, petroleum drilling and the like.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (2)
1. A preparation method of quaternary ammonium salt modified organic magnesium aluminum silicate for thickening an oily system is characterized by comprising the following steps: the preparation method comprises the following steps of:
(1) firstly, 1 ~ 5 parts of the raw materials are mixed to form a mixture, and the mass concentration of the mixture is not higher than 0.1 mol.L-1Adding the dilute phosphoric acid aqueous solution into 100 parts of montmorillonite powder, uniformly stirring, adding 1 ~ 5 parts of divalent metal oxide and 5 ~ 15 parts of rare earth oxide, continuously stirring uniformly, roasting at 150 ~ 250 ℃ for 5 ~ 15min, taking out, adding 1000 ~ 2000 parts of pure water, fully stirring until the montmorillonite is completely dispersed, wherein the divalent metal oxide is one or a combination of more of beryllium oxide, magnesium oxide, copper oxide and zinc oxide, and the rare earth oxide is Ce2O3、Ln2O3One or more of the above-mentioned materials can be arbitrarily combined;
(2) adding 10 ~ 30 parts of quaternary ammonium salt into 500 ~ 800 parts of pure water, heating to 75 ~ 90 ℃ under the condition of full stirring until the quaternary ammonium salt is completely dissolved, then adding the quaternary ammonium salt solution into the montmorillonite suspension prepared in the step (1), heating to 65 ~ 85 ℃, keeping the temperature, stirring and reacting for 1 ~ 2 hours, finally stopping heating, filtering, fully washing, and fully drying a filter cake at 100 ~ 150 ℃ to obtain the organic magnesium aluminum silicate.
2. The method for preparing quaternary ammonium salt modified organic magnesium aluminum silicate for thickening an oily system according to claim 1, which comprises the following steps: the quaternary ammonium salt is one or a combination of more of octadecyl trimethyl ammonium bromide, octadecyl trimethyl ammonium chloride, dioctadecyl dimethyl ammonium bromide, dioctadecyl dimethyl ammonium chloride, dioctadecyl methyl benzyl ammonium bromide, dioctadecyl methyl benzyl ammonium chloride, octadecyl dimethyl benzyl ammonium bromide and octadecyl dimethyl benzyl ammonium chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810635477.5A CN108706605B (en) | 2018-06-20 | 2018-06-20 | Preparation method of quaternary ammonium salt modified organic magnesium aluminum silicate for thickening oily system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810635477.5A CN108706605B (en) | 2018-06-20 | 2018-06-20 | Preparation method of quaternary ammonium salt modified organic magnesium aluminum silicate for thickening oily system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108706605A CN108706605A (en) | 2018-10-26 |
| CN108706605B true CN108706605B (en) | 2020-01-21 |
Family
ID=63871957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810635477.5A Active CN108706605B (en) | 2018-06-20 | 2018-06-20 | Preparation method of quaternary ammonium salt modified organic magnesium aluminum silicate for thickening oily system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108706605B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119035537B (en) * | 2024-08-22 | 2025-11-04 | 广东中南钢铁股份有限公司 | A wear-resistant material, its preparation method and uses |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101264894A (en) * | 2007-11-16 | 2008-09-17 | 兰州理工大学 | Preparation method of secondary intercalation organic bentonite |
| CN103145140A (en) * | 2013-01-29 | 2013-06-12 | 北京化工大学 | Preparation method of modified organic bentonite |
| EP2690067A1 (en) * | 2012-07-27 | 2014-01-29 | Latvijas Universitate | Mechanochemical method for obtaining organoclays from smectites |
| CN105800626A (en) * | 2016-04-05 | 2016-07-27 | 江苏海明斯新材料科技有限公司 | Hydro-thermal synthesis method of high-transmittance nano-scale magnesium lithium silicate |
| US9695111B2 (en) * | 2015-09-22 | 2017-07-04 | Polymate, Ltd. | Method of producing soluble silicates with organic cations |
-
2018
- 2018-06-20 CN CN201810635477.5A patent/CN108706605B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101264894A (en) * | 2007-11-16 | 2008-09-17 | 兰州理工大学 | Preparation method of secondary intercalation organic bentonite |
| EP2690067A1 (en) * | 2012-07-27 | 2014-01-29 | Latvijas Universitate | Mechanochemical method for obtaining organoclays from smectites |
| CN103145140A (en) * | 2013-01-29 | 2013-06-12 | 北京化工大学 | Preparation method of modified organic bentonite |
| US9695111B2 (en) * | 2015-09-22 | 2017-07-04 | Polymate, Ltd. | Method of producing soluble silicates with organic cations |
| CN105800626A (en) * | 2016-04-05 | 2016-07-27 | 江苏海明斯新材料科技有限公司 | Hydro-thermal synthesis method of high-transmittance nano-scale magnesium lithium silicate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108706605A (en) | 2018-10-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5807494A (en) | Gel compositions comprising silica and functionalized carbon products | |
| DE112021005033B4 (en) | PROCESS FOR THE PRODUCTION OF NANOSCALE IRON PHOSPHATE | |
| JPH0621027B2 (en) | Method for producing organic smectite by solid-state reaction | |
| CN106276939B (en) | A kind of fatty acid amide modified method for preparing organobentonite | |
| DE102015122899A1 (en) | An inorganic nanoparticle-containing electrolytic solution for supercapacitors | |
| CN108706605B (en) | Preparation method of quaternary ammonium salt modified organic magnesium aluminum silicate for thickening oily system | |
| DE4023001A1 (en) | Ceramic-ceramic or ceramic-metal composite powders having uniform 2nd - obtd. by cation-exchanging metal from soln. onto ceramic powder then converting metal to cpd. | |
| CN114853026A (en) | Preparation method of high-performance lithium bentonite | |
| CN112569877B (en) | Modified bentonite inorganic gel and preparation method and application thereof | |
| CN110776756B (en) | A kind of modified sepiolite composite pigment and preparation method thereof | |
| CN103011290B (en) | Method for preparing vanadium trioxide microsphere powder under induction action of tartaric acid | |
| CN109399657B (en) | Preparation method of lithium bentonite | |
| DE102005027246A1 (en) | Process for producing an alpha alumina powder | |
| EP3315563A1 (en) | Corrosion protective pigments and their use | |
| Chun-Xi | Recent advances in waterglass sand technologies | |
| JP6890826B2 (en) | Smectite slurry | |
| CN106753722B (en) | Giant electrorheological fluid and preparation method thereof | |
| CN108745215B (en) | Preparation method of high-expansibility and high-thixotropy organic smectite gel | |
| CN121064651A (en) | A method for preparing a low-viscosity composite clay thixotropic agent and the thixotropic agent | |
| CN114837014B (en) | Preparation method of clay compound for carbonless copy paper | |
| CN111646535A (en) | Attapulgite surface modification method and application of modified attapulgite | |
| CN118380654A (en) | A shear thickening electrolyte with high electrochemical properties and a preparation method thereof | |
| CN108165254B (en) | Metastable state temperature-sensitive color-changing material | |
| CN112852390A (en) | Organic clay and preparation method and application thereof | |
| JPH0662290B2 (en) | Method for producing swellable silicate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |