CN115055139A - Epoxy resin filler dispersing device and dispersing method thereof - Google Patents
Epoxy resin filler dispersing device and dispersing method thereof Download PDFInfo
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- CN115055139A CN115055139A CN202210738247.8A CN202210738247A CN115055139A CN 115055139 A CN115055139 A CN 115055139A CN 202210738247 A CN202210738247 A CN 202210738247A CN 115055139 A CN115055139 A CN 115055139A
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- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
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Abstract
The invention relates to the technical field of filler dispersion, and provides an epoxy resin filler dispersing device and a dispersing method thereof, wherein the dispersing device comprises a reaction kettle, an electrostatic atomizer, a mixed solution storage bin, a solvent storage bin and a particle storage bin; the electrostatic atomizer is arranged in the reaction kettle and is provided with a needle head, and one end of the needle head extends into the reaction kettle; the mixed solution storage bin is arranged on the reaction kettle and is communicated with the electrostatic atomizer through a pipeline; the solvent storage bin is arranged on the reaction kettle and is communicated with the mixed solution storage bin through a pipeline; the particle storage bin is arranged in the reaction kettle, and the solvent storage bin is communicated with the mixed solution storage bin through a pipeline. The invention effectively disperses the filler particles, so that the filler particles are uniformly distributed in the epoxy resin, the influence caused by local unevenness is reduced, and the mechanical property and the electrical property of the epoxy resin are improved.
Description
Technical Field
The invention relates to the technical field of dispersing devices, in particular to an epoxy resin filler dispersing device and a dispersing method thereof.
Background
The epoxy resin is a thermosetting resin, has excellent bonding strength to the surfaces of metal and non-metal materials due to good physical and chemical properties, good dielectric property, small shrinkage rate, good dimensional stability of products, high hardness, good flexibility and stability to alkali and most solvents, and is widely applied to various departments of national defense and national economy for casting, impregnation, laminating materials, adhesives, coatings and the like. However, the pure epoxy resin cured product has a high crosslinking structure, so that the pure epoxy resin cured product has the defects of brittleness, poor fatigue resistance, heat resistance, poor impact toughness and the like, is difficult to meet the requirements of engineering technology, and has certain limitation on the application, so the pure epoxy resin cured product has very important significance in modifying the epoxy resin.
Disclosure of Invention
The invention aims to provide an epoxy resin filler dispersing device and a dispersing method thereof, which can effectively disperse filler particles, ensure that the filler particles are uniformly distributed in epoxy resin, reduce the influence caused by local non-uniformity and improve the mechanical property and the electrical property of the epoxy resin.
In order to solve the above-mentioned technical problems, the present invention provides an epoxy resin filler dispersing device comprising:
a reaction kettle;
the electrostatic atomizer is arranged in the reaction kettle and is provided with a needle head, and one end of the needle head extends into the reaction kettle;
the mixed solution storage bin is arranged on the reaction kettle and is communicated with the electrostatic atomizer through a pipeline;
the solvent storage bin is arranged on the reaction kettle and is communicated with the mixed solution storage bin through a pipeline;
the particle storage bin is installed on the reaction kettle, and the solvent storage bin is communicated with the mixed solution storage bin through a pipeline.
Preferably, the device further comprises a control assembly, wherein the control assembly comprises a first electromagnetic valve, a second electromagnetic valve and a console, and the first electromagnetic valve is arranged in the solvent storage bin; the second electromagnetic valve is arranged in the particle storage bin; the control cabinet set up in reation kettle, just the control cabinet with first solenoid valve with the second solenoid valve electricity is connected.
Preferably, the solvent storage bin is 200mm long and 200mm wide; the height is 200 mm.
Preferably, the length of the mixed solution storage bin is 300mm, and the width of the mixed solution storage bin is 300 mm; the height is 300 mm.
Preferably, the length of the mixed solution storage bin is 120mm, and the width of the mixed solution storage bin is 120 mm; the height is 120 mm.
The invention also provides a dispersion method of the epoxy resin filler, which is characterized by comprising the following steps: the method comprises the following steps:
firstly, filling an acetone solvent into the solvent storage bin, filling filler particles into the filler particle storage bin, wherein the filler particles are micron zinc oxide particles, conveying the solvent and the filler particles into the mixed solution storage bin through stainless steel pipelines respectively, and performing ultrasonic dispersion on the mixed solution in the mixed solution storage bin to enable the solvent and the filler particles in the mixed solution to form a suspension;
and the suspension in the mixed solution storage bin is conveyed to the electrostatic atomizer above the reaction kettle through a stainless steel pipeline, the electrostatic atomizer converts the suspension into small droplets wrapping filler particles, the small droplets fly to the epoxy resin and finally uniformly fall on the epoxy resin, so that the influence caused by local nonuniformity is reduced, and the electrical property and the mechanical property of the epoxy resin are improved.
Preferably, the electrostatically atomized particle size is a function of an atomization constant a and a charging voltage U, wherein the electrostatic atomization constant and the electrostatic atomizer satisfy:
preferably, when the liquid jet is charged with static electricity, electric charges are accumulated on the surface of the liquid jet, the repulsion force between the electric charges is enhanced due to the accumulation of the same electric charges, the surface tension and the electric power of the liquid surface are unbalanced, so that charged droplets are split, and the charge limit value of the droplets meets the following conditions:
q max is the droplet charge limit; epsilon 0 Is a vacuum dielectric constant; σ is the surface tension of the liquid; r is the droplet radius.
Preferably, the electrostatic forces to which the droplets are subjected mainly comprise the electric forces F between the charged droplets 1 (N), the second is the electric field force F between the cloud of charged droplets and the epoxy resin 2 (N) the two forces are respectively subjected to the electric field intensity E between the droplets 1 And the electric field strength E between the cloud of droplets and the epoxy resin 2 And the effect of the charge amount q:
F 1 ＝qE 1 ，F 2 ＝qE 2 。
preferably, the droplets are generally charged with a static inductance, depending on the electrical properties of the liquid, determined by a charge transfer time constant τ(s), where τ(s) is a function of the liquid conductivity g and the capacitance ∈ such that:
τ＝ε/g
the droplet formation time is t f ＝l j V, wherein l j For free jet length, v is the velocity of the jet exiting the nozzle.
The invention has the following beneficial effects:
the epoxy resin filler dispersing device is provided with the solvent storage bin, the filler particle storage bin, the mixed solution storage bin and the electrostatic atomizer on the reaction kettle respectively, the whole structure is simple and compact, filler particles are effectively dispersed, the filler particles are uniformly distributed in epoxy resin, the influence caused by local non-uniformity is reduced, and the mechanical property and the electrical property of the epoxy resin are improved.
Drawings
Fig. 1 is a schematic structural diagram of an epoxy resin filler dispersing apparatus according to an embodiment of the present invention.
Reference numerals:
1. a reaction kettle; 2. an electrostatic atomizer; 21. a needle head; 3. a mixed solution storage bin; 4. a solvent storage bin; 5. a particle storage bin; 6. a console; 7. and an epoxy resin block.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. 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 application.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Referring to fig. 1, a preferred embodiment of the present invention provides an epoxy resin filler dispersing apparatus, including a reaction kettle 1, an electrostatic atomizer 2, a mixed solution storage bin 3, a solvent storage bin 4, and a particle storage bin 5; the electrostatic atomizer 2 is arranged in the reaction kettle 1, the electrostatic atomizer 2 is provided with a needle head 21, and one end of the needle head 21 extends into the reaction kettle 1; the mixed solution storage bin 3 is arranged in the reaction kettle 1, and the mixed solution storage bin 3 is communicated with the electrostatic atomizer 2 through a pipeline; the solvent storage bin 4 is arranged in the reaction kettle 1, and the solvent storage bin 4 is communicated with the mixed solution storage bin 3 through a pipeline; the particle storage bin 5 is arranged in the reaction kettle 1, and the solvent storage bin 4 is communicated with the mixed solution storage bin 3 through a pipeline.
The epoxy resin block 7 is provided inside the reaction vessel 1.
In some preferred embodiments of the present invention, the apparatus further comprises a control assembly, wherein the control assembly comprises a first electromagnetic valve, a second electromagnetic valve and a console 6, the first electromagnetic valve is arranged on the solvent storage bin 4; the second electromagnetic valve is arranged in the particle storage bin 5; the control console 6 is arranged in the reaction kettle 1, and the control console 6 is electrically connected with the first electromagnetic valve and the second electromagnetic valve.
In some preferred embodiments of the present invention, the solvent storage bin 4 has a length of 200mm and a width of 200 mm; the height is 200 mm.
In some preferred embodiments of the present invention, the mixed solution storage tank 3 has a length of 300mm and a width of 300 mm; the height is 300 mm.
In some preferred embodiments of the present invention, the mixed solution storage bin 3 has a length of 120mm and a width of 120 mm; the height is 120 mm.
The invention also provides a dispersion method of the epoxy resin filler, which is characterized by comprising the following steps: the method comprises the following steps:
firstly, filling an acetone solvent into the solvent storage bin, filling filler particles into the filler particle storage bin, wherein the filler particles are micron zinc oxide particles, conveying the solvent and the filler particles into the mixed solution storage bin through stainless steel pipelines respectively, and performing ultrasonic dispersion on the mixed solution in the mixed solution storage bin to enable the solvent and the filler particles in the mixed solution to form a suspension;
and the suspension in the mixed solution storage bin is conveyed to the electrostatic atomizer above the reaction kettle through a stainless steel pipeline, the electrostatic atomizer converts the suspension into small droplets wrapping filler particles, the small droplets fly to the epoxy resin and finally uniformly fall on the epoxy resin, so that the influence caused by local nonuniformity is reduced, and the electrical property and the mechanical property of the epoxy resin are improved.
In some preferred embodiments of the present invention, the electrostatically atomized particle size is a function of an atomization constant a and a charging voltage U, wherein the electrostatic atomization constant and the electrostatic atomizer satisfy:
in some preferred embodiments of the present invention, when the liquid jet is electrostatically charged, charges are accumulated on the surface of the liquid jet, and the accumulation of like charges enhances repulsive force between charges, resulting in imbalance between surface tension and electric power of the liquid surface, so that charged droplets are split, and the droplet charge limit value satisfies:
q max is the droplet charge limit; epsilon 0 Is a vacuum dielectric constant; σ is the surface tension of the liquid; r is the droplet radius.
In some preferred embodiments of the invention, the electrostatic forces to which the droplets are subjected comprise primarily the electrical field forces F between the charged droplets 1 (N), the second is the electric field force F between the cloud of charged droplets and the epoxy resin 2 (N) the two forces are respectively subjected to the electric field intensity E between the droplets 1 And the electric field strength E between the cloud of droplets and the epoxy resin 2 And the effect of the charge amount q:
F 1 ＝qE 1 ，F 2 ＝qE 2 ；
of the two forces, F 1 So that coalescence does not occur between the droplets, and F 2 The device has the main function of directional movement of the fog drops, the fog drops are reduced and uniform in size due to the action of electrostatic force, the movement of the fog drops can be controlled, and the distribution condition of the fog drops is improved by changing the strength of electric field, so that the fog drops haveBetter density of coverage.
In some preferred embodiments of the invention, the droplets are generally charged using a static inductance, depending on the electrical properties of the liquid, determined by a charge transfer time constant τ(s), where τ(s) is a function of the liquid conductivity g and the capacitance ε, satisfying:
τ＝ε/g
the droplet formation time is t f ＝l j V, wherein l j For free jet length, v is the velocity of the jet exiting the nozzle.
In summary, the preferred embodiment of the present invention provides an epoxy resin filler dispersing device, which is compared with the prior art:
according to the epoxy resin filler dispersing device, the solvent storage bin, the filler particle storage bin, the mixed solution storage bin and the electrostatic atomizer are respectively arranged on the reaction kettle, the whole structure is simple and compact, filler particles are effectively dispersed, the filler particles are uniformly distributed in epoxy resin, the influence caused by local nonuniformity is reduced, and the mechanical property and the electrical property of the epoxy resin are improved.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. An epoxy filler dispersion device, comprising:
a reaction kettle;
the electrostatic atomizer is arranged in the reaction kettle and is provided with a needle head, and one end of the needle head extends into the reaction kettle;
the mixed solution storage bin is arranged on the reaction kettle and is communicated with the electrostatic atomizer through a pipeline;
the solvent storage bin is arranged on the reaction kettle and is communicated with the mixed solution storage bin through a pipeline;
the particle storage bin is installed on the reaction kettle, and the solvent storage bin is communicated with the mixed solution storage bin through a pipeline.
2. The epoxy resin filler dispersing apparatus according to claim 1, characterized in that: the control assembly comprises a first electromagnetic valve, a second electromagnetic valve and a console, and the first electromagnetic valve is arranged in the solvent storage bin; the second electromagnetic valve is arranged in the particle storage bin; the control console is arranged in the reaction kettle and is electrically connected with the first electromagnetic valve and the second electromagnetic valve.
3. The epoxy resin filler dispersing apparatus according to claim 1, characterized in that: the solvent storage bin is 200mm long and 200mm wide; the height is 200 mm.
4. The epoxy resin filler dispersing apparatus according to claim 1, characterized in that: the length of the mixed solution storage bin is 300mm, and the width of the mixed solution storage bin is 300 mm; the height is 300 mm.
5. The epoxy resin filler dispersing apparatus according to claim 1, characterized in that: the length of the mixed solution storage bin is 120mm, and the width of the mixed solution storage bin is 120 mm; the height is 120 mm.
6. A method for dispersing epoxy resin filler is characterized by comprising the following steps: the method comprises the following steps:
firstly, filling an acetone solvent into the solvent storage bin, filling filler particles into the filler particle storage bin, wherein the filler particles are micron zinc oxide particles, conveying the solvent and the filler particles into the mixed solution storage bin through stainless steel pipelines respectively, and performing ultrasonic dispersion on the mixed solution in the mixed solution storage bin to enable the solvent and the filler particles in the mixed solution to form a suspension;
and the suspension in the mixed solution storage bin is conveyed to the electrostatic atomizer above the reaction kettle through a stainless steel pipeline, the electrostatic atomizer converts the suspension into small droplets wrapping filler particles, the small droplets fly to the epoxy resin and finally uniformly fall on the epoxy resin, so that the influence caused by local nonuniformity is reduced, and the electrical property and the mechanical property of the epoxy resin are improved.
7. The epoxy resin filler dispersing method according to claim 6, characterized in that: the electrostatic atomization particle size is a function of an atomization constant A and a charging voltage U, wherein the electrostatic atomization constant and the electrostatic atomizer meet:
8. the epoxy resin filler dispersing method according to claim 6, characterized in that: when the liquid jet flow is charged with static electricity, charges are accumulated on the surface of the liquid jet flow, repulsion between the charges is enhanced due to the accumulation of the same charges, surface tension and electric power of the surface of the liquid are unbalanced, charged droplets are split, and the charge limit value of the droplets meets the following requirements:
q max is the droplet charge limit; epsilon 0 Is a vacuum dielectric constant; σ is the surface tension of the liquid; r is the droplet radius.
9. The epoxy resin filler dispersing method according to claim 6, characterized in that: the electrostatic force applied to the droplets mainly comprises the electric field force F between the charged droplets 1 (N), the second is the electric field force F between the cloud of charged droplets and the epoxy resin 2 (N) the two forces are respectively subjected to the electric field intensity E between the droplets 1 And the electric field strength E between the cloud of droplets and the epoxy resin 2 And the effect of the charge amount q:
F 1 ＝qE 1 ，F 2 ＝qE 2 。
10. the epoxy resin filler dispersing method according to claim 9, characterized in that: the droplets are typically charged using a static inductance, depending on the electrical properties of the liquid, determined by a charge transfer time constant τ(s), where τ(s) is a function of the liquid conductivity g and the capacitance ∈ that satisfies:
τ＝ε/g；
the droplet formation time is t f ＝l j V, wherein l j For free jet length, v is the velocity of the jet exiting the nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210738247.8A CN115055139A (en) | 2022-06-27 | 2022-06-27 | Epoxy resin filler dispersing device and dispersing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210738247.8A CN115055139A (en) | 2022-06-27 | 2022-06-27 | Epoxy resin filler dispersing device and dispersing method thereof |
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2022
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| US20110192789A1 (en) * | 2008-09-02 | 2011-08-11 | Drexel University | Metal or metal oxide deposited fibrous materials |
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| CN104513404A (en) * | 2013-10-01 | 2015-04-15 | 北京化工大学 | Preparation of epoxy compound coated carbon nano-tube electrostatic spraying carbon fiber prepreg |
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| JP2018104751A (en) * | 2016-12-26 | 2018-07-05 | 日華化学株式会社 | Method of producing composite particle dispersion |
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