CN117772382A - Fine control adjustment method for fineness of glass microsphere grinding powder - Google Patents

Fine control adjustment method for fineness of glass microsphere grinding powder Download PDF

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Publication number
CN117772382A
CN117772382A CN202410216923.4A CN202410216923A CN117772382A CN 117772382 A CN117772382 A CN 117772382A CN 202410216923 A CN202410216923 A CN 202410216923A CN 117772382 A CN117772382 A CN 117772382A
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China
Prior art keywords
grinding
powder
fineness
slurry
glass bead
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CN202410216923.4A
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Chinese (zh)
Inventor
廖斌
杜竹之
游永烽
刘军
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Zhongke Hairui Xiamen Science And Technology Research Institute Co ltd
Zhongke Yali Technology Co ltd
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Zhongke Hairui Xiamen Science And Technology Research Institute Co ltd
Zhongke Yali Technology Co ltd
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Priority to CN202410216923.4A priority Critical patent/CN117772382A/en
Publication of CN117772382A publication Critical patent/CN117772382A/en
Pending legal-status Critical Current

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Abstract

The invention is suitable for the technical field of glass beads, and provides a fine control adjustment method for the fineness of glass bead grinding powder, which comprises the following steps: step one: grinding the glass microsphere grinding powder; step two: uniformly mixing the powder obtained in the step one, water and a modifier; step three: mixing, standing and stirring to obtain slurry; step four: adding a dispersing agent into the slurry; step five: dispersing and uniformly stirring the slurry obtained in the step four; step six: heating and stirring the slurry obtained in the step five; step seven: grinding the slurry obtained in the step six; step eight: filtering the slurry obtained in the step seven by using a screen and drying; step nine: grinding the powder obtained in the step eight, so that the surface property of the powder is improved through the modifier; the dispersing agent enables powder particles to be dispersed more uniformly; the grinding realizes the refinement and superfine grinding of materials, realizes the uniform distribution of the particle size of the grinding powder, and has better fineness.

Description

Fine control adjustment method for fineness of glass microsphere grinding powder
Technical Field
The invention is suitable for the technical field of glass beads, and provides a fine control adjustment method for the fineness of glass bead grinding powder.
Background
The glass bead is a tiny bead body, has high strength, high toughness and excellent physical, chemical and optical properties, and can be used in the processing procedures of grinding, polishing and the like. The grinding powder is a powdery material, can be used as grinding agents or polishing agents and the like, and helps the glass beads to better play the role.
Glass beads and abrasive powders are often used together during grinding and polishing. The particle size, hardness and other characteristics of the abrasive powder affect the grinding and polishing effects, while the glass beads can provide better surface finish and precision. Meanwhile, different combinations of glass beads and grinding powder can produce different effects, and a proper combination mode is required to be selected according to actual conditions.
However, in the actual use process, the particle sizes of the grinding powder are not uniform, so that the grinding powder with different particle sizes and the glass beads are matched, and the grinding effect is poor and the polishing effect is poor in the use process.
Disclosure of Invention
Aiming at the defects, the invention aims to provide a precise control adjustment method for the fineness of glass bead grinding powder, which aims to solve the problems in the background and comprises the following steps:
step one: grinding the glass microsphere grinding powder;
step two: uniformly mixing the glass microsphere grinding powder obtained in the first step, water and a modifier, wherein the modifier comprises isooctyl alcohol ether phosphate and a titanate coupling agent;
step three: mixing, standing and stirring to obtain slurry;
step four: adding a dispersing agent into the slurry;
step five: dispersing the slurry obtained in the step four;
step six: heating and stirring the slurry obtained in the step five;
step seven: grinding the slurry obtained in the step six;
step eight: filtering the slurry obtained in the step seven by using a screen and drying;
step nine: and (3) grinding the powder obtained in the step (eight).
Further, in the second step, the mass fraction of the powder is 40-60%, the mass fraction of the water is 20-40%, and the mass fraction of the modifier is 10-30%.
Further, the isooctyl alcohol ether phosphate in the second step accounts for 40-60% of the mass of the modifier, and the titanate coupling agent accounts for 40-60% of the mass of the modifier.
Further, the standing time in the third step is 1 hour, and the stirring time is 30 minutes.
Further, in the fourth step, the dispersing agent is sodium phosphate, and the dispersing agent accounts for 5-15% of the mass of the slurry.
Further, the dispersing time in the fifth step is 5 minutes.
Further, the temperature in the step six is 100 ℃, heating is carried out at 5 ℃/min, and the stirring time is 10 minutes.
Further, the equipment required by grinding in the step seven is a sand mill, the inner wall of the grinding cavity cylinder is made of polyurethane, alumina microbeads with the thickness of 0.6-0.8mm are used as grinding media, the liquid flow rate of 0.5L/min is used, the grinding speed of 2500rpm is used, the cyclic grinding is carried out for 2 hours, and the grinding temperature is 30 ℃.
Further, the equipment required for drying in the step eight is a centrifugal atomization dryer, and the drying temperature is kept at 40 ℃.
Further, the equipment required for grinding in the step nine is an airflow vortex mill.
Advantageous effects
The invention improves the surface property of the powder by the modifier, so that the powder is better dispersed; the dispersing agent enables powder particles to be more uniformly dispersed in a medium, and meanwhile, agglomeration phenomenon is prevented; the high-speed homogenizing emulsifying machine enables the surface of the substance to be easily mixed with other substances; the sand mill can effectively reduce the friction loss of materials in the grinding process and improve the grinding efficiency; alumina microbeads improve the uniformity of the grinding material and can disperse powder; the centrifugal atomizing dryer controls the granularity of the product, and the dried powder particles can be uniformly dispersed; the airflow vortex grinding realizes the refinement and superfine grinding of materials, realizes the uniform distribution of the particle size of the grinding powder, and has better fineness.
Drawings
FIG. 1 is a flow chart of an implementation of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1, the invention aims to provide a fine control adjustment method for fineness of glass bead grinding powder, which comprises the following steps:
(1) The glass bead grinding powder is put into a pulverizer for pulverizing; the shovel blade in the pulverizer shovels and delivers the materials, and the materials are delivered between the grinding roller and the grinding ring for pulverizing, so that the materials are sufficiently ground, and the materials are ground under the action of centrifugal force.
(2) Uniformly mixing the ground material, water and a modifier, wherein the modifier is isooctyl alcohol ether phosphate and a titanate coupling agent; the titanate coupling agent can be subjected to coupling reaction with the ground glass bead grinding powder, and the modifier molecules are connected with the titanate coupling agent molecules. The reaction can improve the interfacial property between the glass microsphere grinding powder and the organic polymer, improve the mechanical property, the thermal stability and the weather resistance of the material, and improve the surface property of the powder, so that the powder can be better dispersed, the processability and the mechanical property of the composite material are improved, and meanwhile, the flowability of the powder is enhanced; the isooctyl alcohol ether phosphate is used as an active agent to carry out transesterification reaction with the ground glass bead grinding powder: the isooctyl alcohol ether phosphate contains ester group in molecule, and can be subjected to transesterification with modifier containing hydroxyl or carboxyl. The reaction can connect modifier molecules with isooctyl alcohol ether phosphate molecules to form new surfactant molecules, can reduce interfacial tension between liquid and solid particles, and plays roles of preventing caking and improving fluidity in the powder reaction process.
(3) Standing for 1 hour after mixing, and stirring for 30 minutes to obtain slurry; the reaction is eased by standing for 1 hour, and then the modifier and the ground material are fully mixed and reacted by stirring.
(4) Dispersing agent is added into the slurry, wherein the dispersing agent is sodium phosphate Na 3 PO 4 The sodium phosphate dispersing agent has the action mechanism of improving the surface property of the powder material, reducing the interfacial tension between the powder particles and the liquid medium, enabling the powder particles to be more uniformly dispersed in the medium, and simultaneously preventing the occurrence of agglomeration phenomenon.
(5) Dispersing for 5 minutes by a high-speed homogenizing emulsifying machine and then taking out; the macromolecular substances in the slurry are dispersed into small molecular substances so that the surface of the substances can be easily mixed with other substances.
(6) Heating the slurry at 5 ℃/min, controlling the temperature at 100 ℃, stirring for 10 minutes, and then cooling to room temperature; accelerating the dissolution of the powder, enabling the powder to have higher fluidity and promoting the dispersion, homogenization and mixing of the powder.
(7) Grinding by a sand mill, wherein the sand mill is wet mechanical grinding equipment, the inner wall of a grinding cavity cylinder body is made of polyurethane, alumina microbeads with the thickness of 0.6-0.8mm are used as grinding media, the liquid flow of 0.5L/min is adopted, the grinding speed is 2500rpm, the cyclic grinding is carried out for 2 hours, and the grinding temperature is 30 ℃; the polyurethane has excellent wear resistance, so that the friction loss of materials in the grinding process can be effectively reduced, and the grinding efficiency is improved; the alumina microbeads improve the uniformity of the grinding material, can disperse powder and improve the grinding efficiency.
(8) Filtering the ground slurry with a screen, and drying with a centrifugal atomization dryer; the centrifugal atomizing dryer utilizes the high-speed rotating dispersing disc to atomize the feed liquid into fine fog drops, and then the fog drops are dried in the dryer, so that the centrifugal atomizing dryer is easy to control the granularity of the product, and the dried powder particles can be uniformly dispersed.
(9) Grinding by an airflow vortex mill; the airflow vortex mill uses vortex motion generated by high-speed airflow to perform strong impact, collision and friction on materials, so that the materials are thinned and superfine-ground.
Example 1:
(1) And (3) putting the glass microsphere grinding powder into a pulverizer for pulverizing, wherein the granularity reaches 10 microns.
(2) The ground materials, water and modifier are uniformly mixed, the modifier is isooctyl alcohol ether phosphate and titanate coupling agent, and the mass fractions of the phosphate and the titanate coupling agent in the modifier are 40% and 60% respectively. The weight percentages of the ground materials, water and modifier are shown in the following table 1:
TABLE 1 mass fractions of different components
(3) After mixing, the mixture was allowed to stand for 1 hour and then stirred for 30 minutes to prepare a slurry.
(4) Adding 5% of dispersing agent which is sodium phosphate Na into the slurry 3 PO 4
(5) Dispersing for 5 min by a high-speed homogenizing emulsifying machine, and taking out, wherein the median particle size of the powder in the slurry is 8.1 mu m.
(6) The slurry was heated at 5 ℃/min, the temperature was controlled at 100 ℃, stirred for 10 minutes and then cooled to room temperature.
(7) Grinding by a sand mill, wherein the sand mill is wet mechanical grinding equipment, the inner wall of a grinding cavity cylinder body is made of polyurethane, alumina microbeads with the thickness of 0.6-0.8mm are used as grinding media, the liquid flow of 0.5L/min is adopted, the grinding speed is 2500rpm, the cyclic grinding is carried out for 2 hours, and the grinding temperature is 30 ℃.
(8) The milled slurry was filtered through a 5 μm sieve, and the slurry had a median particle diameter of 4.5 μm and was dried by a centrifugal atomizing dryer, keeping the drying temperature at 40 ℃.
(9) Grinding by an airflow vortex mill; the powder obtained is given in table 2 below:
TABLE 2 characterization results of powders
Example 2
(1) And (3) putting the glass microsphere grinding powder into a pulverizer for pulverizing, wherein the granularity reaches 10 microns.
(2) Uniformly mixing the ground material, water and a modifier, wherein the modifier is isooctyl alcohol ether phosphate and a titanate coupling agent, and the mass fractions of the phosphate and the titanate coupling agent in the modifier are respectively 50% and 50%; the weight percentages of the ground materials, water and modifier are shown in the following table 3:
TABLE 3 mass fractions of different components
(3) After mixing, the mixture was allowed to stand for 1 hour and then stirred for 30 minutes to prepare a slurry.
(4) 10 percent of dispersing agent is put into the slurry, wherein the dispersing agent is sodium phosphate Na 3 PO 4
(5) Dispersing for 5 min by a high-speed homogenizing emulsifying machine, and taking out, wherein the median particle size of the powder in the slurry is 7.2 mu m.
(6) The slurry was heated at 5 c/min, the temperature was controlled at 100 c, and stirred for 10 minutes.
(7) Grinding by a sand mill, wherein the sand mill is wet mechanical grinding equipment, the inner wall of a grinding cavity cylinder body is made of polyurethane, alumina microbeads with the thickness of 0.6-0.8mm are used as grinding media, the liquid flow of 0.5L/min is adopted, the grinding speed is 2500rpm, the cyclic grinding is carried out for 2 hours, and the grinding temperature is 30 ℃.
(8) The milled slurry was filtered through a 5 μm sieve, and the slurry had a median particle diameter of 4.5 μm and was dried by a centrifugal atomizing dryer, keeping the drying temperature at 40 ℃.
(9) Grinding by an airflow vortex mill; the powder obtained is given in table 4 below:
TABLE 4 characterization results of powders
Example 3
(1) And (3) putting the glass microsphere grinding powder into a pulverizer for pulverizing, wherein the granularity reaches 10 microns.
(2) Uniformly mixing the ground material, water and a modifier, wherein the modifier is isooctyl alcohol ether phosphate and a titanate coupling agent, and the mass fractions of the phosphate and the titanate coupling agent in the modifier are respectively 60% and 40%; the weight percentages of the ground materials, water and modifier are shown in the following table 5:
TABLE 5 mass fractions of different components
(3) After mixing, the mixture was allowed to stand for 1 hour and then stirred for 30 minutes to prepare a slurry.
(4) 15 mass percent of dispersing agent is put into the slurry, wherein the dispersing agent is sodium phosphate Na 3 PO 4
(5) Dispersing for 5 min by a high-speed homogenizing emulsifying machine, and taking out, wherein the median particle size of the powder in the slurry is 7.8 mu m.
(6) The slurry was heated at 5 c/min, the temperature was controlled at 100 c, and stirred for 10 minutes.
(7) Grinding by a sand mill, wherein the sand mill is wet mechanical grinding equipment, the inner wall of a grinding cavity cylinder body is made of polyurethane, alumina microbeads with the thickness of 0.6-0.8mm are used as grinding media, the liquid flow of 0.5L/min is adopted, the grinding speed is 2500rpm, the cyclic grinding is carried out for 2 hours, and the grinding temperature is 30 ℃.
(8) The milled slurry was filtered through a 5 μm sieve, and the slurry had a median particle diameter of 4.5 μm and was dried by a centrifugal atomizing dryer, keeping the drying temperature at 40 ℃.
(9) Grinding by an airflow vortex mill; the powder obtained is shown in Table 6 below:
TABLE 6 characterization results of powders
In summary, the powder prepared in example 2 had a specific surface area of 142m 2 The fineness of the powder is better; the median particle diameter is 2.3 mu m, and the particle diameter distribution of the powder particles is uniform; the surface property of the powder is improved by the modifier, so that the powder is better dispersed, the processing performance and mechanical property of the composite material are improved, and meanwhile, the fluidity of the powder is enhanced; the dispersing agent improves the surface property of the powder material, reduces the interfacial tension between the powder particles and the liquid medium, ensures that the powder particles can be more uniformly dispersed in the medium, and simultaneously prevents the occurrence of agglomeration phenomenon; the high-speed homogenizing emulsifying machine disperses macromolecular substances in the slurry into small molecular substances, so that the surfaces of the substances can be easily mixed with other substances; the sand mill can effectively reduce the friction loss of materials in the grinding process and improve the grinding efficiency; the alumina microbeads improve the uniformity of the grinding material, can disperse powder and improve the grinding efficiency; the centrifugal atomizing dryer atomizes the feed liquid into fine fog drops by utilizing a dispersing disc rotating at a high speed, and then the fog drops are dried in the dryer, so that the centrifugal atomizing dryer is easier to control the granularity of a product, and the dried powder particles can be uniformly dispersed; the airflow vortex grinding realizes the refinement and superfine grinding of materials.
Therefore, the device can improve the surface property of the powder through the modifier, so that the powder can be better dispersed; the dispersing agent enables powder particles to be more uniformly dispersed in a medium, and meanwhile, agglomeration phenomenon is prevented; the high-speed homogenizing emulsifying machine enables the surface of the substance to be easily mixed with other substances; the sand mill can effectively reduce the friction loss of materials in the grinding process and improve the grinding efficiency; alumina microbeads improve the uniformity of the grinding material and can disperse powder; the centrifugal atomizing dryer controls the granularity of the product, and the dried powder particles can be uniformly dispersed; the airflow vortex grinding realizes the refinement and superfine grinding of materials, realizes the uniform distribution of the particle size of the grinding powder, and has better fineness.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent processes or direct or indirect applications in other related technical fields using the descriptions and the drawings of the present invention are included in the scope of the invention.

Claims (10)

1. A fine control adjustment method for the fineness of glass bead grinding powder is characterized in that: the method comprises the following steps:
step one: grinding the glass microsphere grinding powder;
step two: uniformly mixing the glass microsphere grinding powder obtained in the first step, water and a modifier, wherein the modifier comprises isooctyl alcohol ether phosphate and a titanate coupling agent;
step three: mixing, standing and stirring to obtain slurry;
step four: adding a dispersing agent into the slurry;
step five: dispersing the slurry obtained in the step four;
step six: heating and stirring the slurry obtained in the step five;
step seven: grinding the slurry obtained in the step six;
step eight: filtering the slurry obtained in the step seven by using a screen and drying;
step nine: and (3) grinding the powder obtained in the step (eight).
2. The fine control adjustment method of the glass bead grinding powder fineness according to claim 1, wherein in the second step, the mass fraction of the powder is 40-60%, the mass fraction of the water is 20-40%, and the mass fraction of the modifier is 10-30%.
3. The method for precisely controlling and adjusting the fineness of the glass bead grinding powder according to claim 1, wherein the isooctyl alcohol ether phosphate in the second step accounts for 40-60% of the mass of the modifier, and the titanate coupling agent accounts for 40-60% of the mass of the modifier.
4. The method for precisely controlling and adjusting the fineness of glass bead grinding powder according to claim 1, wherein the standing time in the third step is 1 hour, and the stirring time is 30 minutes.
5. The method for precisely controlling and adjusting the fineness of the glass bead grinding powder according to claim 1, wherein the dispersing agent in the fourth step is sodium phosphate, and the dispersing agent accounts for 5-15% of the mass fraction of the slurry.
6. The method for precisely controlling and adjusting the fineness of the glass bead grinding powder according to claim 1, wherein the dispersing time in the fifth step is 5 minutes.
7. The method for precisely controlling and adjusting the fineness of the glass bead grinding powder according to claim 1, wherein the temperature in the sixth step is 100 ℃, the heating is performed at 5 ℃/min, and the stirring time is 10 minutes.
8. The method for precisely controlling and adjusting the fineness of glass bead grinding powder according to claim 1, wherein equipment required for grinding in the seventh step is a sand mill, the inner wall material of a grinding cavity cylinder is polyurethane, alumina beads with the thickness of 0.6-0.8mm are used as grinding media, the liquid flow rate is 0.5L/min, the grinding speed is 2500rpm, the cyclic grinding is carried out for 2 hours, and the grinding temperature is 30 ℃.
9. The method for precisely controlling and adjusting the fineness of the glass bead grinding powder according to claim 1, wherein the equipment required for drying in the step eight is a centrifugal atomization dryer, and the drying temperature is kept at 40 ℃.
10. The method for precisely controlling and adjusting the fineness of glass bead mill powder according to claim 1, wherein the equipment required for grinding in the step nine is an air flow vortex mill.
CN202410216923.4A 2024-02-28 2024-02-28 Fine control adjustment method for fineness of glass microsphere grinding powder Pending CN117772382A (en)

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