CN113045911A - Processing method of sericite powder for rubber filler - Google Patents
Processing method of sericite powder for rubber filler Download PDFInfo
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- CN113045911A CN113045911A CN202110233657.2A CN202110233657A CN113045911A CN 113045911 A CN113045911 A CN 113045911A CN 202110233657 A CN202110233657 A CN 202110233657A CN 113045911 A CN113045911 A CN 113045911A
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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
- C09C1/40—Compounds of aluminium
- C09C1/405—Compounds of aluminium containing combined silica, e.g. mica
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- 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
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- 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
-
- 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
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L21/00—Compositions of unspecified rubbers
-
- 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
- C09C3/04—Physical treatment, e.g. grinding, treatment with ultrasonic vibrations
-
- 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
- C09C3/04—Physical treatment, e.g. grinding, treatment with ultrasonic vibrations
- C09C3/041—Grinding
-
- 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
- C09C3/04—Physical treatment, e.g. grinding, treatment with ultrasonic vibrations
- C09C3/043—Drying, calcination
-
- 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
- C09C3/12—Treatment with organosilicon compounds
Abstract
The invention provides a processing method of sericite powder for rubber filler, which comprises the following steps: (1) crushing raw ore by a dry method until the granularity is less than 130 meshes; (2) wet grinding until the ore accounts for more than 80 percent of minus 325 meshes, and then grading by adopting a hydraulic cyclone; (3) after grading, taking a product with the granularity of-45 mu m, and grinding the product by using a stripping machine; (4) and (3) dehydrating and drying the product after the ore grinding by the stripping machine, and then adding the atomized silane coupling agent in a dry manner, wherein the adding amount is 2-5% of the mass of the solid. The sericite is subjected to superfine grinding and surface treatment, the treated sericite powder has small granularity, good dispersibility, large doping amount after rubber is added, good reinforcing effect and stable performance, can replace carbon black in rubber in the prior art, reduces the cost of the rubber and improves the additional value of the sericite.
Description
Technical Field
The invention relates to a processing method of sericite powder for rubber filler, belonging to the technical field of mineral processing.
Background
The air tightness of rubber is a primary property for many rubber products, such as inner tubes, bladders and many life-saving articles, etc. The air tightness of the rubber is improved by the properties of the rubber and its filler, except for the processing and coating processes. The better the compactness of the rubber, the better the impermeability of the article. Of course, the price of the glue is quite high, and the cost is a problem, so that the cost is low and the effect is good when the functional filler wet mica powder is used, and the significance is particularly important.
Sericite is an aluminosilicate mineral having a layered structure, belonging to a single crystal oblique system, having a silver gray natural color and a spun silk texture, and is a hydrophilic inorganic filler, and thus, if it is not well processed, it has a poor surface activity and a low binding force with a rubber section.
Disclosure of Invention
The invention aims to provide a processing method of sericite powder for rubber filler, which is used for carrying out ultrafine grinding processing and surface treatment on sericite, wherein the processed sericite powder has small granularity, good dispersibility, large doping amount after rubber is added, good reinforcing effect and stable performance, can replace carbon black in rubber in the prior art, reduces the cost of the rubber and improves the additional value of the sericite.
The above purpose is realized by the following technical scheme:
a processing method of sericite powder for rubber filler comprises the following steps:
(1) crushing raw ore by a dry method until the granularity is less than 130 meshes;
(2) wet grinding until the ore accounts for more than 80 percent of minus 325 meshes, and then grading by adopting a hydraulic cyclone;
(3) after grading, taking a product with the granularity of-45 mu m, and grinding the product by using a stripping machine;
(4) and (3) dehydrating and drying the product after the ore grinding by the stripping machine, and then adding the atomized silane coupling agent in a dry manner, wherein the adding amount is 2-5% of the mass of the solid.
The processing method of the sericite powder for the rubber filler comprises the step (1) of adopting a cone crusher for dry crushing.
The processing method of the sericite powder for the rubber filler comprises the step (2) of grinding ore by a wet grinding method, wherein the grinding ore concentration is 20%.
In the processing method of the sericite powder for the rubber filler, a dispersing agent with the dry ore content of 1% by mass is added in the classification process of the hydraulic cyclone in the step (2), and the dispersing agent adopts sodium carbonate.
In the processing method of the sericite powder for the rubber filler, in the ore grinding process of the stripping machine in the step (3), the impeller linear speed of the stripping machine is 600m/min, and the ore grinding concentration is 65-75%.
Has the advantages that:
according to the invention, the technological process of ore grinding, grading and flaking ore grinding is adopted, the produced sericite has low granularity and high radius-thickness ratio, the atomized silane coupling agent is finally added to modify the sericite powder, the modified sericite powder has a large blending ratio in rubber, white carbon black can be completely replaced, the processability of the rubber can be effectively improved, and the tensile strength and the bending strength can be improved.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A processing method of sericite powder for rubber filler comprises the following steps:
(1) crushing raw ore by a dry method until the granularity is less than 130 meshes;
(2) wet grinding until the ore accounts for more than 80 percent of minus 325 meshes, and then grading by adopting a hydraulic cyclone;
(3) after grading, taking a product with the granularity of-45 mu m, and grinding the product by using a stripping machine;
(4) and (3) dehydrating and drying the product after the ore grinding by the stripping machine, and then adding the atomized silane coupling agent in a dry manner, wherein the adding amount is 2-5% of the mass of the solid.
The processing method of the sericite powder for the rubber filler comprises the step (1) of adopting a cone crusher for dry crushing.
The processing method of the sericite powder for the rubber filler comprises the step (2) of grinding ore by a wet grinding method, wherein the grinding ore concentration is 20%.
In the processing method of the sericite powder for the rubber filler, a dispersing agent with the dry ore content of 1% by mass is added in the classification process of the hydraulic cyclone in the step (2), and the dispersing agent adopts sodium carbonate.
In the processing method of the sericite powder for the rubber filler, in the ore grinding process of the stripping machine in the step (3), the impeller linear speed of the stripping machine is 600m/min, and the ore grinding concentration is 65-75%.
The effect of the addition of sericite powder on the rubber properties was tested by the specific examples below:
white carbon black, unmodified sericite powder and sericite powder modified by a silane coupling agent are added into the rubber raw material according to the mass ratio of 30 percent respectively, and the measurement indexes are shown in the following table:
| index (I) | Tensile strength Kg/cm | Elongation (%) | Flexural Strength (MPa) | Hardness (Shao Er A) |
| White carbon black | 12.6 | 538 | 52 | 0.67 |
| Unmodified sericite powder | 8.9 | 421 | 48 | 0.73 |
| Sericite powder modified with silane coupling agent | 13.2 | 567 | 56 | 0.65 |
Therefore, after the sericite powder processed by the method is modified, the sericite powder has a large mixing proportion in rubber, can completely replace white carbon black, can effectively improve the processing performance of the rubber, and improves the tensile strength and the bending strength.
The technical solutions disclosed in the present invention are not limited to the technical means disclosed in the above technical features, but also include technical solutions formed by equivalent substitutions of the above technical features. The present invention is not limited to the details given herein, but is within the ordinary knowledge of those skilled in the art.
Claims (5)
1. A processing method of sericite powder for rubber filler is characterized by comprising the following steps: the method comprises the following steps:
(1) crushing raw ore by a dry method until the granularity is less than 130 meshes;
(2) wet grinding until the ore accounts for more than 80 percent of minus 325 meshes, and then grading by adopting a hydraulic cyclone;
(3) after grading, taking a product with the granularity of-45 mu m, and grinding the product by using a stripping machine;
(4) and (3) dehydrating and drying the product after the ore grinding by the stripping machine, and then adding the atomized silane coupling agent in a dry manner, wherein the adding amount is 2-5% of the mass of the solid.
2. The method for processing sericite powder for rubber filler according to claim 1, wherein: the dry crushing in the step (1) adopts a cone crusher.
3. The method for processing sericite powder for rubber filler according to claim 1, wherein: the ore grinding concentration of the wet grinding in the step (2) is 20%.
4. The method for processing sericite powder for rubber filler according to claim 1, wherein: and (3) adding a dispersing agent accounting for 1% of the dry ore mass in the classification process of the hydraulic cyclone in the step (2), wherein the dispersing agent adopts sodium carbonate.
5. The method for processing sericite powder for rubber filler according to claim 1, wherein: and (3) in the ore grinding process of the stripping machine in the step (3), the linear speed of an impeller of the stripping machine is 600m/min, and the ore grinding concentration is 65-75%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110233657.2A CN113045911A (en) | 2021-03-03 | 2021-03-03 | Processing method of sericite powder for rubber filler |
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| CN202110233657.2A CN113045911A (en) | 2021-03-03 | 2021-03-03 | Processing method of sericite powder for rubber filler |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113278202A (en) * | 2021-07-13 | 2021-08-20 | 江西省矿产资源保障服务中心 | Rubber reinforcing filler and preparation method thereof |
| CN113801377A (en) * | 2021-11-09 | 2021-12-17 | 石家庄辰兴实业有限公司 | Micro-particle powder and preparation method and application thereof |
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| CN102527476A (en) * | 2011-12-29 | 2012-07-04 | 湖南超牌科技有限公司 | Wet grinding system for nonmetal mineral powder and grinding method thereof |
| CN105199147A (en) * | 2014-06-15 | 2015-12-30 | 成都棕通石油配件有限公司 | Preparation method of modified mica powder for rubber packing |
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2021
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| CN113801377A (en) * | 2021-11-09 | 2021-12-17 | 石家庄辰兴实业有限公司 | Micro-particle powder and preparation method and application thereof |
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Application publication date: 20210629 |