CN115260592A - Preparation method of nano organic clay compound for polymer - Google Patents
Preparation method of nano organic clay compound for polymer Download PDFInfo
- Publication number
- CN115260592A CN115260592A CN202210922983.9A CN202210922983A CN115260592A CN 115260592 A CN115260592 A CN 115260592A CN 202210922983 A CN202210922983 A CN 202210922983A CN 115260592 A CN115260592 A CN 115260592A
- Authority
- CN
- China
- Prior art keywords
- nano
- mineral powder
- bentonite
- sodium
- calcium
- 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.)
- Granted
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/02—Ingredients treated with inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/08—Ingredients agglomerated by treatment with a binding agent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
The application relates to a preparation method of a nano organic clay compound for a polymer, belonging to the technical field of modified bentonite. Firstly, uniformly mixing calcium-based bentonite mineral powder and a dispersant, adding water, kneading, stacking, drying and crushing to prepare pretreated mineral powder; then purifying the pretreated mineral powder; then sequentially treating the mixture by using a sodium modification agent and an organic modification agent; finally, the pH value is adjusted to 5~7 by acid, the mixture is mixed for 1~2 hours at the constant temperature of 20 to 80 ℃, and the mixture is dried and ground into powder to prepare the required nano organic clay compound for the polymer. The invention endows the organoclay compound with higher purity and better temperature resistance by purifying and modifying the bentonite, and can be used in the field of polymer composite materials.
Description
Technical Field
The application relates to a preparation method of a nano organic clay compound for a polymer, belonging to the technical field of modified bentonite.
Background
Bentonite is a natural inorganic nano-layered silicate mineral, and the main mineral component of the bentonite is montmorillonite. The montmorillonite sheet layer is formed by two layers of silicon-oxygen tetrahedrons sandwiching one layer of aluminum-oxygen octahedron, the thickness of the montmorillonite sheet layer is about 0.96nm, the width of the montmorillonite sheet layer is about 50 to 200nm, and the montmorillonite sheet layer is a natural two-dimensional nano material. The layers of montmorillonite are impregnated with exchangeable cations and the layers are stacked together to form a particle. Montmorillonite has hydrophilicity, and can swell and disperse in water to form suspension colloid. The montmorillonite is subjected to intercalation modification, so that the montmorillonite lamella is changed from hydrophilicity to hydrophobicity, and the excellent nano lamella effect is exerted in a solvent system and a polymer system.
The modifier commonly used for carrying out organic modification on the montmorillonite is alkyl quaternary ammonium salt cationic surfactant, such as hexadecyl trimethyl ammonium chloride, octadecyl dimethyl ammonium chloride and the like. The quaternary ammonium salt enters the montmorillonite interlamination through the ion exchange effect to realize the organic modification of the montmorillonite layer. For example, the invention patent application with the application number of CN101774598A discloses a preparation method of modified clay for alkyl quaternary ammonium salt surfactant intercalation. Firstly, preparing a clay suspension in water, then adding a solution containing an alkyl ammonium salt surfactant into the clay suspension, and adjusting the change of the composition of a reaction medium to obtain modified clay with an alkyl ammonium salt surfactant fully exchanged intercalation; or directly adding clay powder into the solution of the alkyl ammonium salt surfactant, and changing the state of the alkyl ammonium salt surfactant through the change of the composition of reaction medium components to obtain the modified clay with the alkyl ammonium salt surfactant fully exchanging intercalation. The method can realize the full exchange of cations among clay layers while reducing the physical adsorption of the alkyl ammonium salt surfactant as much as possible.
The quaternary ammonium salt cationic surfactant is intercalated between montmorillonite layers to convert the surface of montmorillonite from hydrophilic to hydrophobic, so as to promote the dispersion of montmorillonite in polymer system. However, the conventional quaternary ammonium salt surfactants have low thermal decomposition temperatures, so that the modified organoclay composite is limited in use in polymers. The organoclay composite is dispersed in the polymer by either a single screw or twin screw dispersion process, the polymer is heated to a molten state and the organoclay composite is then dispersed in the molten polymer system. When the temperature of the molten polymer system is higher, the quaternary ammonium salt in the organic clay compound is partially decomposed thermally, so that the color of the material is darkened, and the subsequent application is influenced.
The application of the nano organic clay in the polymer also has the influence on the physicochemical property of the polymer by the accompanying impurity minerals. The higher the montmorillonite content in the nano organic clay is, the less the impurity content is, and the better the nano effect is.
Disclosure of Invention
The invention aims to provide a preparation method of a nano organic clay compound for a polymer. The invention endows the organic clay compound with higher purity and better temperature resistance by purifying and modifying the bentonite. Can be used in the field of polymer composite materials.
The technical scheme for solving the problems is as follows:
a preparation method of a nano organic montmorillonite composite for polymers comprises the following steps:
1) Uniformly mixing the calcium-based bentonite mineral powder and the dispersant; then adding water with the mass of 20-100% of the calcium-based bentonite mineral powder, mixing and kneading uniformly, stacking for more than 72 hours, drying, and crushing to obtain pretreated mineral powder;
2) Adding water into the pretreated mineral powder, stirring for pulping, and centrifugally purifying to obtain suspension slurry with the montmorillonite content of more than 90 Wt%;
3) Performing plate-and-frame filter pressing and dehydration on the slurry to obtain a calcium-based bentonite filter cake;
4) Adding a sodium modification agent into the calcium bentonite filter cake, and kneading and modifying to obtain a sodium montmorillonite paste;
5) Adding an organic modifier into the sodium-based montmorillonite paste, and kneading at the constant temperature of 20-80 ℃ for 1-10 hours;
6) Adjusting the pH of the system to 5~7 by acid; mixing at constant temperature of 20 to 80 ℃ for 1~2 hours;
7) Drying and grinding to obtain the nano organic montmorillonite composite for the polymer.
Preferably, in the step 1), the dispersant is at least one selected from the group consisting of low molecular weight sodium polyacrylate (molecular weight is 500-5000), low molecular weight polyethylene oxide, isopentenyl polyoxyethylene ether and methoxy polyethylene glycol ether, and the amount of the dispersant is 0.01-10% by weight of the mass of the calcium bentonite; the mixing and kneading process of the step 5) is carried out at room temperature without heat treatment.
Preferably, in the step 2), when the pretreated mineral powder is added with water and stirred for pulping, the mass fraction of the pretreated mineral powder in the slurry is 20 to 40 percent by weight, and the pretreated mineral powder needs to be fully stirred and dispersed for 2 to 8 hours, and then centrifugal purification is carried out.
Preferably, in the step 4), the sodium modification agent is at least one of disodium ethylenediaminetetraacetate, sodium phosphate, sodium pyrophosphate and sodium oxalate, and the dosage of the sodium modification agent is 0.2 to 2.0 times of the cation exchange capacity of the purified bentonite.
Preferably, in step 5), the organic modifier is at least one of stearylamine polyoxyethylene ether, tallow amine polyoxyethylene ether and cocoamine polyoxyethylene ether.
Preferably, in the above embodiment, the acid used in step 6) is at least one of phosphoric acid, sulfuric acid and hydrochloric acid. Further preferably phosphoric acid; the acid serves to adjust the pH of the modified system to between 5~7.
As the optimization of the technical scheme, in the grinding in the step 7), the selected grinding equipment needs to meet the requirement that the maximum particle size D99 of the dry powder of a final product is less than 15um.
In conclusion, the invention has the following beneficial effects:
1. firstly, mixing and kneading and stacking calcium-based montmorillonite by adopting dispersing agents such as low molecular weight sodium polyacrylate and the like in a semidry method, so that the dispersing agents can be fully combined with the surface of the montmorillonite, and the purification purity of the calcium-based montmorillonite is improved in the subsequent purification process;
2. the sodium modification and the organic modification are carried out under the semidry method condition, and water is saved in the production process;
3. the invention adopts fatty amine polyoxyethylene ether material to carry out composite intercalation modification on montmorillonite to obtain the nano organic clay compound with obvious high temperature resistance, and the nano organic clay compound can be used in the field of polymer composite materials with higher requirements on processing temperature, and can improve the mechanical property, flame retardant property and the like of the materials.
Drawings
FIG. 1 is an XRD pattern of a sample of example 1;
FIG. 2 is an XRD pattern of a sample of comparative example 3;
FIG. 3 is a DSC profile of the sample of example 1;
FIG. 4 is a DSC-TGA profile of the sample of comparative example 3;
FIG. 5 is a DSC-TGA profile of the sample of comparative example 4.
Detailed Description
The technical solutions of the present invention are further described below with specific examples, but the specific details of the examples are only for illustrating the present invention and do not represent all technical approaches under the inventive concept. Therefore, the present invention should not be construed as being limited to the general technical solutions of the present invention.
Example 1
1000g of calcium-based bentonite ore powder, 20g of low-molecular-weight sodium polyacrylate, uniformly mixing dry powder, adding 400g of water, kneading and uniformly mixing, stacking at room temperature for 5 days, drying and crushing to obtain the pretreated ore powder.
Taking the pretreated mineral powder, adding water, stirring and dispersing to prepare bentonite suspension with the concentration of 20wt%, stirring and dispersing for 1 hour at room temperature, centrifugally purifying, and performing plate-and-frame filter pressing to obtain a purified calcium-based bentonite filter cake, wherein the water content of the filter cake is 65%, and the blue absorption amount of dry-based montmorillonite is 42%.
Transferring the purified calcium-based montmorillonite filter cake into small equipment with a heating kneading function, adding disodium ethylene diamine tetraacetate, the dosage of which is 0.6 times of the cation exchange capacity of the purified calcium-based montmorillonite, and kneading and modifying for 2 hours. Then adding organic modifier stearylamine polyoxyethylene ether with the dosage of 1.0 time of the cation exchange capacity of the calcium-based montmorillonite, heating to 75 ℃, mixing and kneading for 2 hours, drying at 70 ℃, grinding and carrying out airflow grinding to obtain the nano organic clay compound with the particle size of D99-15 um.
FIG. 1 is an XRD pattern of a sample of this example from which it can be seen that the nano-organoclay composite prepared according to the patented method had an interlayer spacing d001 value of 1.731nm, indicating intercalation of the organic modifier into the interlayer of the montmorillonite.
FIG. 3 is a DSC chart of the sample of this example, from which it can be seen that the thermal decomposition temperature of example 1 is 293.27 ℃.
Example 2
A purified calcium bentonite cake was prepared as in example 1.
Transferring the purified calcium-based montmorillonite filter cake into small equipment with a heating kneading function, adding disodium ethylene diamine tetraacetate, the dosage of which is 0.6 times of the cation exchange capacity of the purified calcium-based montmorillonite, and kneading and modifying for 2 hours. Adding organic modifier cocoamine polyoxyethylene ether with the dosage of 1.0 time of the cation exchange capacity of the calcium-based montmorillonite, heating to 75 ℃, mixing and kneading for 2 hours, drying at 70 ℃, grinding, and performing jet milling to obtain the nano organic clay compound with the particle size of D99-15 um.
Example 3
A purified calcium bentonite cake was prepared as in example 1.
Transferring the purified calcium-based montmorillonite filter cake into small equipment with a heating kneading function, adding disodium ethylene diamine tetraacetate, wherein the dosage of the disodium ethylene diamine tetraacetate is 0.6 times of the cation exchange capacity of the purified and collected montmorillonite, and kneading and modifying for 2 hours. Then adding organic modifier tallow amine polyoxyethylene ether with the dosage of 1.0 time of the cation exchange capacity of the calcium-based montmorillonite, heating to 75 ℃, mixing and kneading for 2 hours, drying at 70 ℃, grinding and performing jet milling to obtain the nano organic clay compound with the particle size of D99-15 um.
Example 4
A purified calcium bentonite cake was prepared as in example 1.
Transferring the purified calcium-based montmorillonite filter cake into small equipment with a heating kneading function, adding disodium ethylene diamine tetraacetate, wherein the dosage of the disodium ethylene diamine tetraacetate is 0.6 times of the cation exchange capacity of the purified and collected montmorillonite, and kneading and modifying for 2 hours. Then adding organic modifiers tallow amine polyoxyethylene ether and coconut amine polyoxyethylene ether, wherein the dosage of the organic modifiers is 0.6 time and 0.4 time of the cation exchange capacity of the calcium-based montmorillonite respectively, heating to 75 ℃, mixing and kneading for 2 hours, drying at 70 ℃, grinding into powder, and performing jet milling to obtain the nano organic clay compound, wherein the particle size of the nano organic clay compound is D99-15 um.
Comparative example 1
1000g of calcium-based bentonite ore powder is added with 400g of water, kneaded and mixed uniformly, stacked at room temperature for 5 days, dried and crushed to obtain the pretreated ore powder.
Taking the pretreated mineral powder, adding water, stirring and dispersing to prepare bentonite suspension with the concentration of 20wt%, stirring and dispersing for 1 hour at room temperature, centrifugally purifying, and performing plate-and-frame filter pressing to obtain a purified calcium-based bentonite filter cake, wherein the water content of the filter cake is 65%, and the blue absorption amount of dry-based montmorillonite is 35%.
In the purification process of the comparative example 1, no dispersing aid is added, the purification purity does not reach the standard, and no subsequent experiment is carried out.
Comparative example 2
A purified calcium bentonite cake was prepared as in example 1.
Transferring the purified calcium-based montmorillonite filter cake into stirring dispersion equipment, adding water until the slurry concentration is 5wt%, heating to 75 ℃, adding disodium ethylene diamine tetraacetate of which the dosage is 0.6 times of the cation exchange capacity of the purified calcium-based montmorillonite, and stirring at constant temperature for reaction for 2 hours. Then adding organic modifier cocoamine polyoxyethylene ether with the dosage of 1.0 time of the cation exchange capacity of the calcium-based montmorillonite, stirring for 2 hours at constant temperature, performing filter pressing dehydration, drying at 70 ℃, grinding and performing airflow grinding to obtain the nano organic clay compound with the particle size of D99-15 um.
Comparative example 2 the organic modification was performed by a wet process, and a nano organoclay composite could also be obtained, but the method uses a large amount of water.
Comparative example 3
A purified calcium bentonite cake was prepared as in example 1.
Transferring the purified calcium-based montmorillonite filter cake into stirring dispersion equipment, adding water until the slurry concentration is 5wt%, heating to 75 ℃, adding disodium ethylene diamine tetraacetate, the dosage of which is 0.6 times of the cation exchange capacity of the purified calcium-based montmorillonite, and stirring at constant temperature for reaction for 2 hours. Then adding organic modifier octadecyl trimethyl ammonium chloride with the dosage of 1.0 time of the cation exchange capacity of the calcium-based montmorillonite, stirring for 2 hours at constant temperature, performing filter pressing dehydration, drying at 70 ℃, grinding and performing air flow grinding to obtain the particle size D99-15 um to obtain the nano organic clay compound.
FIG. 2 is an XRD pattern of the comparative example, from which it can be seen that the nano-organoclay composite prepared by modification with the conventional quaternary ammonium salt has the modifier incorporated between the montmorillonite layers and the interlayer spacing d001 value of 1.998nm.
FIG. 4 is a DSC-TGA thermogram of this comparative example from which it can be seen that the thermal decomposition temperature of the sample of comparative example 3 is 249.51 deg.C, which is significantly lower than that of example 1.
Comparative example 4
A purified calcium bentonite cake was prepared as in example 1.
Transferring the purified calcium-based montmorillonite filter cake into stirring dispersion equipment, adding water until the slurry concentration is 5wt%, heating to 75 ℃, adding disodium ethylene diamine tetraacetate, the dosage of which is 0.6 times of the cation exchange capacity of the purified calcium-based montmorillonite, and stirring at constant temperature for reaction for 2 hours. Then adding organic modifier octadecyl trimethyl ammonium chloride with the dosage of 1.0 time of the cation exchange capacity of the calcium-based montmorillonite, and stirring for 1h at constant temperature; adding stearic acid, the dosage of which is 0.2 times of the cation exchange capacity of the calcium-based montmorillonite, stirring for 1h at constant temperature, performing filter pressing dehydration, drying at 70 ℃, grinding and performing airflow grinding to obtain the particle size D99-15 um, thus obtaining the cation-nonionic modified nano organic clay compound.
FIG. 5 is a DSC-TGA thermogram of this comparative example from which it can be seen that the thermal decomposition temperature of the sample of comparative example 4 is 251.10 deg.C, significantly lower than that of example 1.
Claims (7)
1. A preparation method of a nano organic montmorillonite composite for polymers comprises the following steps:
1) Uniformly mixing the calcium-based bentonite mineral powder and the dispersing agent; then adding water with the mass of 20-100% of the calcium-based bentonite mineral powder, mixing and kneading uniformly, stacking for more than 72 hours, drying, and crushing to obtain pretreated mineral powder;
2) Adding water into the pretreated mineral powder, stirring, pulping, and centrifugally purifying to obtain suspension slurry with the montmorillonite content of more than 90 Wt%;
3) Performing plate-frame filter pressing and dehydration on the slurry to obtain a calcium-based bentonite filter cake;
4) Adding a sodium modification agent into the calcium bentonite filter cake, and kneading and modifying to obtain a sodium montmorillonite paste;
5) Adding an organic modifier into the sodium-based montmorillonite paste, mixing and kneading, and kneading at a constant temperature of 20 to 80 ℃ for 1 to 10 hours;
6) Adjusting the pH of the system to 5~7 by using acid; mixing at constant temperature of 20 to 80 ℃ for 1~2 hours;
7) Drying and grinding to obtain the nano organic montmorillonite composite for the polymer.
2. The method for preparing a nano-organic montmorillonite composite for polymers according to claim 1, wherein: the dispersant in the step 1) is at least one selected from low molecular weight sodium polyacrylate, low molecular weight polyethylene oxide, isopentenyl polyoxyethylene ether and methoxy polyethylene glycol ether, and the dosage of the dispersant is 0.01 to 10 percent of the mass of the calcium bentonite.
3. The nano-organic montmorillonite composite for polymers and the preparation method thereof according to claim 1, characterized in that: and 2) adding water into the pretreated mineral powder, stirring and pulping, wherein the mass fraction of the pretreated mineral powder in the slurry is 20-40 wt%, the pretreated mineral powder needs to be fully stirred and dispersed for 2-8 h, and then, carrying out centrifugal purification.
4. The method for preparing a nano-organic montmorillonite composite for polymers according to claim 1, wherein: the sodium modification agent in the step 4) is at least one of disodium ethylene diamine tetraacetate, sodium phosphate, sodium pyrophosphate and sodium oxalate, and the dosage of the sodium modification agent is 0.2 to 2.0 times of the cation exchange capacity of the purified bentonite.
5. The method for preparing a nano-organic montmorillonite composite for polymers according to claim 1, wherein: the organic modifier in the step 5) is at least one of stearylamine polyoxyethylene ether, tallow amine polyoxyethylene ether and cocoamine polyoxyethylene ether.
6. The method for preparing a nano-organic montmorillonite composite for polymers according to claim 1, wherein: the acid used in the step 6) is at least one of phosphoric acid, sulfuric acid and hydrochloric acid.
7. The method for preparing a nano-organic montmorillonite composite for polymers according to claim 1, wherein: and (3) grinding in the step 7), wherein the selected grinding equipment needs to meet the requirement that the maximum particle size D99 of the dry powder of the final product is less than 15um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210922983.9A CN115260592B (en) | 2022-08-02 | 2022-08-02 | Preparation method of nano organic clay compound for polymer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210922983.9A CN115260592B (en) | 2022-08-02 | 2022-08-02 | Preparation method of nano organic clay compound for polymer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115260592A true CN115260592A (en) | 2022-11-01 |
| CN115260592B CN115260592B (en) | 2023-07-18 |
Family
ID=83747706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210922983.9A Active CN115260592B (en) | 2022-08-02 | 2022-08-02 | Preparation method of nano organic clay compound for polymer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115260592B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5358647A (en) * | 1991-01-09 | 1994-10-25 | Colgate-Palmolive Company | Fabric softening products based on a combination of pentaerythritol compound and bentonite |
| WO2007090355A1 (en) * | 2006-02-09 | 2007-08-16 | Zhejiang Hailisheng Pharmaceutical Limited Co. | A method for purification of montmorillonit, purified montmorillonite and composition thereof |
| CN101272986A (en) * | 2005-11-04 | 2008-09-24 | 浙江海力生制药有限公司 | Modified smectite and method for producing the same and its application |
| CN101823722A (en) * | 2010-05-10 | 2010-09-08 | 内蒙古大学 | Method for preparing bentonite inorganic gel from calcium bentonite |
| CN103820086A (en) * | 2013-12-10 | 2014-05-28 | 中国石油集团渤海钻探工程有限公司 | Composite modified organic soil and full mineral oil base drilling fluid containing organic soil |
| CN103881423A (en) * | 2014-03-24 | 2014-06-25 | 浙江丰虹新材料股份有限公司 | Easily-dispersible organic clay with reactivity and preparation method thereof |
| CN111268687A (en) * | 2020-03-06 | 2020-06-12 | 浙江丰虹新材料股份有限公司 | Organic clay composition and preparation method thereof |
-
2022
- 2022-08-02 CN CN202210922983.9A patent/CN115260592B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5358647A (en) * | 1991-01-09 | 1994-10-25 | Colgate-Palmolive Company | Fabric softening products based on a combination of pentaerythritol compound and bentonite |
| CN101272986A (en) * | 2005-11-04 | 2008-09-24 | 浙江海力生制药有限公司 | Modified smectite and method for producing the same and its application |
| WO2007090355A1 (en) * | 2006-02-09 | 2007-08-16 | Zhejiang Hailisheng Pharmaceutical Limited Co. | A method for purification of montmorillonit, purified montmorillonite and composition thereof |
| CN101340979A (en) * | 2006-02-09 | 2009-01-07 | 浙江海力生制药有限公司 | Method for purifying montmorillonite, purified montmorillonite and combination thereof |
| CN101823722A (en) * | 2010-05-10 | 2010-09-08 | 内蒙古大学 | Method for preparing bentonite inorganic gel from calcium bentonite |
| CN103820086A (en) * | 2013-12-10 | 2014-05-28 | 中国石油集团渤海钻探工程有限公司 | Composite modified organic soil and full mineral oil base drilling fluid containing organic soil |
| CN103881423A (en) * | 2014-03-24 | 2014-06-25 | 浙江丰虹新材料股份有限公司 | Easily-dispersible organic clay with reactivity and preparation method thereof |
| CN111268687A (en) * | 2020-03-06 | 2020-06-12 | 浙江丰虹新材料股份有限公司 | Organic clay composition and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115260592B (en) | 2023-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111269606B (en) | High-purity high-thickening easy-to-disperse nano montmorillonite used in water-based paint field and preparation method thereof | |
| CN102424399B (en) | Preparation process for aluminosilicophosphate molecular sieve | |
| US6521678B1 (en) | Process for the preparation of organoclays | |
| CN104829860B (en) | A kind of melamine cyanurate and montmorillonite nano complex and preparation method thereof | |
| US6172121B1 (en) | Process for preparing organoclays for aqueous and polar-organic systems | |
| CN102249255B (en) | Anionic-nonionic composite organic montmorillonite and preparation method thereof | |
| KR102070380B1 (en) | Method for producing synthetic hectorite at low temperature and atmospheric pressure | |
| CN111268687B (en) | Organic clay composition and preparation method thereof | |
| CN1887709A (en) | Prepn process of magnesia for silicon steel | |
| CN106495175A (en) | A kind of preparation method of organic modification montmonrillonite | |
| CN113308023A (en) | High-dispersion and organic-affinity aluminum phosphite flame retardant and preparation method thereof | |
| CN111825099A (en) | Aluminum magnesium silicate inorganic gel and preparation method thereof | |
| CN107488366B (en) | Method for modifying layered silicate powder by silicon dioxide | |
| CN115260592A (en) | Preparation method of nano organic clay compound for polymer | |
| CN112569877B (en) | Modified bentonite inorganic gel and preparation method and application thereof | |
| CN112500116B (en) | Stable heat-preservation inorganic board and preparation method thereof | |
| US8871666B2 (en) | Method of preparing an easily-dispersed rheology-grade product from a pseudolaminar silicate, product thus obtained and methods of using same | |
| US11117288B2 (en) | Montmorillonite slurry, clay film and method of producing montmorillonite slurry | |
| KR20100073625A (en) | Method for preparing hydrophobic aerogel granules | |
| CN114684827B (en) | High-quality modified white carbon black and preparation method thereof | |
| KR20130035712A (en) | Super-hydrophobic silica aerogel granule and method of fabricating the same | |
| CN109279622A (en) | A kind of periodic mesoporous organic silicon oxide material of structure-controllable and preparation method thereof | |
| CN102604485A (en) | Pigment dispersing agent composite containing phosphate ester structure and preparation method thereof | |
| CN113402904A (en) | Preparation method of low-viscosity composite clay thixotropic agent | |
| CN109126646B (en) | High-suspension mineral gel of low heavy metal and cristobalite and preparation method thereof |
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 |