CN112007739A - Preparation method and application of nano particles - Google Patents
Preparation method and application of nano particles Download PDFInfo
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- CN112007739A CN112007739A CN202010687839.2A CN202010687839A CN112007739A CN 112007739 A CN112007739 A CN 112007739A CN 202010687839 A CN202010687839 A CN 202010687839A CN 112007739 A CN112007739 A CN 112007739A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
- B02C2023/165—Screen denying egress of oversize material
Abstract
The invention discloses a preparation method of nano particles, which comprises the following steps: (S1) preparing raw materials: preparing a main material, a dispersing agent, polyamide wax, lithium magnesium silicate and water; (S2) rough grinding: grinding the raw materials to a crude product with the particle size of not more than 3 um; (S3) fine grinding: and (3) continuously grinding the crude product until the particle size distribution reaches the following standard to obtain a finished product of the nano particles: d (0.1)0.030-0.060um, d (0.5)0.060-0.090um, d (0.9)0.090-0.190 um. During grinding, a coarse grinding and fine grinding two-step grinding method is selected, the coarse grinding is carried out until the grain diameter of one grain is smaller than the grade of 3um, and then the fine grinding is carried out to reach the required nanometer grade. The preparation method of the invention realizes the beneficial effects of simplified process for preparing the nano particles, high stability of the nano particles, long shelf life of products and wide application range. The invention can be applied to the fields of food materials, cosmetic materials, pigments and medicines, and has wide application fields.
Description
Technical Field
The invention relates to the technical field of nano material preparation, in particular to a preparation method of nano particles, and especially relates to a preparation method and application of nano particles.
Background
Nanoparticles refer to microscopic particles of nanometer scale, defined as particles smaller than 200nm in at least one dimension, and more strictly less than 100 nm. Nanoparticles have many properties different from those of general particles, and are receiving increasing attention, and the properties of nanoparticles are also being applied to various fields including food, medicine, cosmetics, pigments, and the like. In the food field, for example, chocolate powder is produced, and the finer the chocolate powder is, the smoother the texture is, and in the pigment field, the smaller the particles are, the higher the brightness of the pigment spray is, and the finer the image quality is.
With the continuous expansion of the application, higher requirements are put on the preparation of the nano particles, and the method is simple and low in cost. The currently disclosed preparation method of the nano-particles generally adopts huge and complicated process equipment and high cost, while the simple preparation method or equipment is difficult to meet the requirements of nano-grade, and some can meet the requirements of grade slightly, but the obtained nano-grade product is easy to agglomerate and is coarse, so that the quality guarantee period is short.
In the invention patent with publication number CN101379168, a method for grinding nanoparticles is proposed, which divides the grinding into several parts, namely ball milling, chemical mechanical grinding, etc., wherein various layered materials are required, including molybdenum disulfide, tungsten disulfide, etc., and other soft metals, etc., due to the addition of many chemical or metallic substances, the method has limited application range, and the whole grinding process is as long as tens of hours, the efficiency is not high, which finally results in the method having a narrow application range and complex process operation.
Disclosure of Invention
On the one hand, the technical problem to be solved by the invention is to provide a preparation method of nanoparticles, which solves the technical problems of complex process for preparing nanoparticles, unstable finished product and short quality guarantee period in the prior art, and realizes the technical effects of high stability, long quality guarantee period and simplified process of the finished product.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a method of preparing nanoparticles, comprising the steps of:
(S1) preparing raw materials: preparing a main material, a dispersing agent, polyamide wax, lithium magnesium silicate and water;
(S2) rough grinding: grinding the raw materials to a crude product with the particle size of not more than 3 um;
(S3) fine grinding: and (3) continuously grinding the crude product until the particle size distribution reaches the following standard to obtain a finished product of the nano particles:
d(0.1)0.030-0.060um，d(0.5)0.060-0.090um，d(0.9)0.090-0.190um。
preferably, in the step (S2), the crude product is prepared by grinding with a dispersion cylinder or an open sand mill, and the following fine steps are performed on the following raw materials in parts by weight:
A. putting 28-30 parts of dispersing agent and 80-100 parts of water into a dispersing cylinder or an open type sand mill and stirring for 15-30 minutes;
B. adding 15-30 parts of raw materials into a dispersion cylinder or an open type sand mill, fully stirring and uniformly mixing, adding 1-2 parts of polyamide wax and lithium magnesium silicate, and continuously stirring for 10-20min to obtain a mixture;
C. continuously carrying out dispersion grinding in a dispersion cylinder containing zirconium beads or an open grinder for 3-6 hours until a primary crude product with the particle size of not more than 3um is obtained;
D. washing the dispersion jar or open mill with 5-10 parts of water and discharging the washed primary crude product from the dispersion jar or open mill;
E. and (3) carrying out coarse filtration on the primary crude product, wherein the mesh diameter of the coarse filtration is 180-300 meshes, so as to obtain the crude product.
Preferably, in step C, the content of the zirconium beads is 1-2 times of the total amount of the mixture in the dispersion cylinder or the open mill, and the stirring speed of the dispersion cylinder or the open mill is 300-500 rpm.
More preferably, in step 1, the fine grinding is performed by a horizontal sand mill, and comprises the following steps:
I. adding the crude product into a horizontal sand mill for dispersing and stirring uniformly;
II, grinding for 3-6 hours in a horizontal sand mill at the temperature of 30-40 ℃ until the particle size distribution reaches the following standard, and stopping grinding: d (0.1)0.030-0.100um, d (0.5)0.060-0.150um, d (0.9)0.090-0.250 um;
and III, adding 5-10 parts of water to clean the horizontal sand mill, and finally uniformly stirring to obtain the nano particles.
Particularly preferably, in the step II, the occupancy rate of the zirconium beads in the horizontal sand mill is 85% of the volume, the particle size of the zirconium beads is 0.3mm, and the rotating speed of the horizontal sand mill is 2000-2300 rpm; after step III, the following steps may also be included: and (3) carrying out precision filtration on the nanoparticles obtained in the step (III), wherein the aperture of a filter element used for filtration is not more than 300 um.
Preferably, the main material may further include: food materials, cosmetic materials, medicinal materials or pigments.
The problem to be solved by another aspect of the present invention is to provide an application of a method for preparing nanoparticles, which can be applied to cosmetic preparation, pigment preparation and pharmaceutical preparation.
The technical scheme provided by the application at least has the following technical effects or advantages:
by adopting the technical scheme, because two grinding methods of coarse grinding and fine grinding are selected, the grinding is carried out to the level that the particle diameter of one particle is less than 3um during the coarse grinding, and then the fine grinding is carried out to reach the required nano level, so that the process is simple and convenient, and the cost is low. In addition, by dividing into two grinding steps, the product fine particles are prevented from rapidly agglomerating under the condition of continuous grinding, the stability and the quality guarantee period of the product are effectively improved, the further refinement of the particle size of the product is facilitated, and finally the average particle size distribution [ D50 or D (0.5) ] is in the range of 0.06-0.09nm and reaches the nano level in the true sense.
The polyamide wax is added in the grinding process, can form a strong network structure, has excellent thixotropic property and the characteristics of excellent anti-sagging capability and anti-settling capability, effectively isolates each particle, and prevents the particles from settling in the suspension process. Effectively overcomes the problem that the ratio of the surface area to the volume of the particles is larger along with the gradual reduction of the particle size of the object, the adsorption capacity is stronger, and the agglomeration phenomenon is easier to occur. The agglomeration phenomenon of the particles in the grinding process and the agglomeration phenomenon of the particles during storage are reduced. The preparation method disclosed by the invention can be applied to the fields of food materials, cosmetic materials, pigments and medicines, and can promote the application of the nanoparticles in a wide range of fields. The technical problems of instability, short quality guarantee period and insufficient application range of the nano particles in the prior art are effectively solved, and the beneficial effects of simplified process, high stability of the nano particles, long quality guarantee period of products and wide application range are further realized.
Detailed Description
The following further describes the embodiments of the present invention. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The embodiment of the application provides a preparation method of nano-particles, and a two-step grinding method of coarse grinding and fine grinding is adopted, so that the nano-particles are ground to a level that the particle size of one particle is less than 3um during coarse grinding, then the nano-particles are ground to a required nano-level through fine grinding, and polyamide wax is added as an additive during grinding. The technical problems of complex process, unstable finished product and short shelf life of the nanoparticles in the prior art are solved, and the technical effects of high stability and long shelf life of the finished product, simplified process and wide application are achieved.
In order to better understand the above technical solutions, the following detailed descriptions will be provided.
Example 1
The user operates according to a method for preparing nanoparticles proposed by the present invention, wherein the user uses an inorganic black pigment as a raw material in the present example, and first, the following components are prepared in percentage by weight:
in the embodiment, the dispersant is German digao 740 aqueous dispersant, the polyamide wax is Changxing synergetic, the magnesium lithium silicate is Guangzhou Shengxin chemical, and the aqueous pigment can be used in various types, either domestic or imported.
Then the method comprises the following steps:
(1) coarse grinding: the dispersion cylinder is adopted for grinding, and the grinding,
A. 14Kg of dispersing agent and 45Kg of water are put into a dispersion cylinder and stirred for 20 minutes, and in the embodiment, a Germany digao 740 aqueous dispersing agent is adopted, and the dispersing agent has an electrostatic shielding effect and a steric hindrance effect, can prevent agglomeration and maintain stability;
B. 15Kg of black organic pigment was put into a dispersion tank and mixed well, and 0.5Kg of polyamide wax, which was used in this example in the synergistic effect of Happy, was added thereto and stirred for 15 min.
C. After mixing the dispersant, water, pigment and polyamide wax, 1Kg of lithium magnesium silicate was added, and the mixture was stirred for 15min to obtain a mixture.
D. The input amount of the zirconium beads is 1.5 times of the total amount of the mixed color paste in the dispersion cylinder, the adjustment can be made within a certain range according to the model and the bearable range of the dispersion cylinder, for example, the adjustment is 1-2 times, but the adjustment cannot be too large, the large loss of the zirconium beads to the dispersion cylinder is prevented, the stirring rotating speed of the dispersion cylinder is 400 r/min, similarly, the rotating speed can be properly adjusted according to the bearable range of the dispersion cylinder, the adjustment range is generally 300 and 500 r/min, then the dispersion grinding is carried out for 3-4 hours, and the obtained primary crude product with the particle size not larger than 3um is detected;
E. the dispersion jar was rinsed with 10% of the total amount of water and the rinsed primary crude product was discharged from the dispersion jar.
F. And (4) carrying out coarse filtration on the primary crude product, wherein the aperture of a filter screen of the coarse filtration is 250 meshes, so as to obtain the crude product.
(2) Fine grinding: grinding by adopting a horizontal sand mill
I. Putting the crude product into a container, inputting the crude product into a horizontal sand mill through a circulating pump, and dispersing and stirring the crude product uniformly;
II. The occupancy rate of zirconium beads in the horizontal sand mill is 85% of the volume, and can be changed within a certain range according to the type and the bearable range of the horizontal sand mill, generally 80-87%, if too large, the loss of the horizontal sand mill can be large, the particle size of the zirconium beads is 0.3mm, the rotating speed of the horizontal sand mill is 2100 r/min, the temperature of a mixed substance ground at the discharge port of the horizontal sand mill is controlled at 30-40 ℃ by a cooler, and after grinding for 4 hours in the horizontal sand mill, a color paste sample is extracted for particle size analysis, in the embodiment, a Malvern particle size analyzer (type: Mastersizer 2000) is adopted for detection until the particle size distribution reaches the following standard:
d(0.1)0.030-0.100um，
d(0.5)0.060-0.150um，
d(0.9)0.090-0.250um；
III, stopping grinding, adding 10Kg of water to clean the horizontal sand mill, and finally uniformly stirring;
and IV, performing precision filtration on the mixed color paste collected in the step III, wherein the step of precision filtration is mainly used for removing large-particle impurities in the color paste, in the embodiment, a filter with a cotton core is adopted, the aperture of the cotton core is 100um, the aperture of the cotton core is mainly set according to the requirement of a customer, if the requirement of the customer is high, the aperture is smaller, and the environment-friendly nano water-based color paste finished product 1 is obtained through the steps.
We measured d (0.1) by a Malvern particle size Analyzer (model: MASTERSIZER 2000) as 0.035um, d (0.5) as 0.060 and d (0.9) as 0.093.
The beneficial effects of this embodiment are as follows:
by adopting the technical scheme, because two grinding methods of coarse grinding and fine grinding are selected, the grinding is carried out to the level that the particle diameter of one particle is less than 3um during the coarse grinding, and then the fine grinding is carried out to reach the required nano level, so that the process is simple and convenient, and the cost is low. In addition, by dividing into two grinding steps, the product fine particles are prevented from rapidly agglomerating under the condition of continuous grinding, the stability and the quality guarantee period of the product are effectively improved, the further refinement of the particle size of the product is facilitated, and finally the average particle size distribution [ d (0.5) ] is 0.06nm and reaches the nano level which belongs to the true meaning.
The polyamide wax is added in the grinding process, can form a strong network structure, has excellent thixotropic property and the characteristics of excellent anti-sagging capability and anti-settling capability, effectively isolates each particle, and prevents the particles from settling in the suspension process. Effectively overcomes the problem that the ratio of the surface area to the volume of the particles is larger along with the gradual reduction of the particle size of the object, the adsorption capacity is stronger, and the agglomeration phenomenon is easier to occur. The agglomeration phenomenon of the black inorganic pigment particles in the grinding process and the agglomeration phenomenon of the black inorganic pigment particles during storage are reduced. The preparation method disclosed by the invention can be applied to the field of pigments and can promote the application of nanoparticles in a wide range of fields.
The technical problems of instability, short shelf life and insufficient application range of the nano particles in the prior art are effectively solved, and the beneficial effects of simplified process, high stability of the nano particles, long shelf life of products and wide application range are further realized.
Example 2
Example 2 the same procedure as in example 1, except that in this example, the starting material used was cocoa powder, and the proportions by weight of the components, amounting to 20Kg, were as follows:
we measured d (0.1) to be 0.035um, d (0.5) to be 0.068um and d (0.9) to be 0.098um by a Malvern particle size Analyzer (model: MASTERSIZER 2000).
Furthermore, after the particle size of the product is verified, the stability of the product is detected, the obtained product is stored for 12 months and then is detected, the particle size of the product is increased by about 0.02um, and the use requirement is still met. In the prior art, the storage date of the product is not more than 3 months, but the storage period can be improved to 12 months after the polyamide wax is added.
By the embodiment 1 and the embodiment 2, the black organic pigment and the coffee beans in the nanometer grade are correspondingly obtained, and by the method and the application disclosed by the invention, a user can also apply the method for preparing the nanoparticles to more preparation processes and fields, and the method is not limited to the process flows of foods, cosmetics, pigments, medicines and the like.
The embodiments of the present invention have been described in detail, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and still fall within the scope of the invention.
Claims (7)
1. A method of preparing nanoparticles, comprising: the method comprises the following steps:
(S1) preparing raw materials: preparing a main material, a dispersing agent, polyamide wax, lithium magnesium silicate and water;
(S2) rough grinding: grinding the raw materials to a crude product with the particle size of not more than 3 um;
(S3) fine grinding: and (3) continuously grinding the crude product until the particle size distribution reaches the following standard to obtain a finished product of the nano particles:
d(0.1)0.030-0.060um，d(0.5)0.060-0.090um，d(0.9)0.090-0.190um。
2. the method for preparing nanoparticles according to claim 1, characterized in that: in step (S2), a dispersion cylinder or an open sand mill is used for grinding, and the following raw materials in parts by weight are used for preparing a crude product in the following fine steps:
A. putting 28-30 parts of dispersing agent and 80-100 parts of water into a dispersing cylinder or an open type sand mill and stirring for 15-30 minutes;
B. adding 15-30 parts of raw materials into a dispersion cylinder or an open type sand mill, fully stirring and uniformly mixing, adding 1-2 parts of polyamide wax and lithium magnesium silicate, and continuously stirring for 10-20min to obtain a mixture;
C. continuously carrying out dispersion grinding in a dispersion cylinder containing zirconium beads or an open grinder for 3-6 hours until a primary crude product with the particle size of not more than 3um is obtained;
D. washing the dispersion jar or open mill with 5-10 parts of water and discharging the washed primary crude product from the dispersion jar or open mill;
E. and (3) carrying out coarse filtration on the primary crude product, wherein the mesh diameter of the coarse filtration is 180-300 meshes, so as to obtain the crude product.
3. The method for producing nanoparticles according to claim 2, characterized in that: in the step C, the content of the zirconium beads is 1-2 times of the total amount of the mixture in the dispersion cylinder or the open type grinder, and the stirring speed of the dispersion cylinder or the open type grinder is 300-500 r/min.
4. The method for preparing nanoparticles according to claim 1, characterized in that: in the step 1, the fine grinding is carried out by a horizontal sand mill and comprises the following steps:
I. adding the crude product into a horizontal sand mill for dispersing and stirring uniformly;
II, grinding for 3-6 hours in a horizontal sand mill at the temperature of 30-40 ℃ until the particle size distribution reaches the following standard, and stopping grinding: d (0.1)0.030-0.100um, d (0.5)0.060-0.150um, d (0.9)0.090-0.250 um;
and III, adding 5-10 parts of water to clean the horizontal sand mill, and finally uniformly stirring to obtain the nano particles.
5. The method for producing nanoparticles according to claim 4, characterized in that: in the step II, the occupancy rate of the zirconium beads in the horizontal sand mill is 85% of the volume, the particle size of the zirconium beads is 0.3mm, and the rotating speed of the horizontal sand mill is 2000-one 2300 revolutions per minute; after step III, the following steps may also be included: and D, performing precision filtration on the nanoparticles obtained in the step III, wherein the aperture of a filter element used for filtration is not more than 300 um.
6. The method for preparing nanoparticles according to claim 1, characterized in that: the main materials may further include: food materials, cosmetic materials, medicinal materials or pigments.
7. Use of a method of preparation of nanoparticles according to any one of claims 1 to 6, characterized in that: the preparation method can be applied to cosmetic preparation, pigment preparation and medicine preparation.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103272677A (en) * | 2013-05-22 | 2013-09-04 | 袁伟 | Method for preparing nano particles and application thereof |
| CN103275561A (en) * | 2013-05-22 | 2013-09-04 | 袁伟 | Environmentally-friendly water-based nanometer color paste and preparation method thereof |
| CN105778734A (en) * | 2014-12-26 | 2016-07-20 | 嵊州市三鼎新型涂料科技有限公司 | Method for preparing water-based baking paint |
| CN106221458A (en) * | 2016-08-30 | 2016-12-14 | 河北晨阳工贸集团有限公司 | A kind of steel construction special anti-corrosion sealing wax and preparation method thereof |
| CN108213766A (en) * | 2018-01-16 | 2018-06-29 | 中山翰华锡业有限公司 | A kind of aluminium welds special solder(ing) paste and preparation method thereof and application method |
| CN110229574A (en) * | 2019-03-21 | 2019-09-13 | 复旦大学 | Aqueous flash of light colored paint of one kind and preparation method thereof |
-
2020
- 2020-07-16 CN CN202010687839.2A patent/CN112007739A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103272677A (en) * | 2013-05-22 | 2013-09-04 | 袁伟 | Method for preparing nano particles and application thereof |
| CN103275561A (en) * | 2013-05-22 | 2013-09-04 | 袁伟 | Environmentally-friendly water-based nanometer color paste and preparation method thereof |
| CN105778734A (en) * | 2014-12-26 | 2016-07-20 | 嵊州市三鼎新型涂料科技有限公司 | Method for preparing water-based baking paint |
| CN106221458A (en) * | 2016-08-30 | 2016-12-14 | 河北晨阳工贸集团有限公司 | A kind of steel construction special anti-corrosion sealing wax and preparation method thereof |
| CN108213766A (en) * | 2018-01-16 | 2018-06-29 | 中山翰华锡业有限公司 | A kind of aluminium welds special solder(ing) paste and preparation method thereof and application method |
| CN110229574A (en) * | 2019-03-21 | 2019-09-13 | 复旦大学 | Aqueous flash of light colored paint of one kind and preparation method thereof |
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