CN115107204A - Ultrasonic degassing device for epoxy resin mixed material and degassing method thereof - Google Patents
Ultrasonic degassing device for epoxy resin mixed material and degassing method thereof Download PDFInfo
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- CN115107204A CN115107204A CN202210737692.2A CN202210737692A CN115107204A CN 115107204 A CN115107204 A CN 115107204A CN 202210737692 A CN202210737692 A CN 202210737692A CN 115107204 A CN115107204 A CN 115107204A
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- ultrasonic
- box body
- epoxy resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/006—Degassing moulding material or draining off gas during moulding
Abstract
The invention relates to the technical field of ultrasonic degassing, and provides an ultrasonic degassing device for epoxy resin mixing and a degassing method thereof, wherein the ultrasonic degassing device comprises a box body, a feeding pump body, an air compressor, a barometer and an ultrasonic emitter, wherein the side wall of the box body is respectively provided with a feeding valve and an air supply valve; the feeding pump body is respectively connected with an external material source and a feeding valve; the air compressor is respectively connected with an external air source and an air supply valve; the barometer is arranged in the box body and used for monitoring the air pressure in the box body; the ultrasonic transmitter is arranged in the box body and used for transmitting ultrasonic signals to the interior of the box body. The invention can effectively solve the problems of incomplete defoaming in the mechanical method, change of base liquid performance by chemical defoaming and the like in the epoxy resin mixing process. The device can be used for eliminating bubbles in the epoxy resin mixing process.
Description
Technical Field
The invention relates to the technical field of ultrasonic degassing, in particular to an ultrasonic degassing device for epoxy resin mixed materials and a degassing method thereof.
Background
In order to ensure the excellent comprehensive performance of the epoxy resin composite material, the manufacturing process is particularly important, and the performance of the epoxy resin composite material is reduced due to the existence of impurities, bubbles and the like. The material mixing link in the preparation process is one of important links, gas is easily introduced in the material mixing process, so that bubbles exist in a system, the problems of uneven curing and large residual stress can occur in the system, the performance of a product is deteriorated until the product is generated in engineering application, and the failure is further enlarged after the equipment is damaged. Therefore, the generation of bubbles should be prevented during the mixing process, and the generation of such accidents should be avoided.
In summary, the application of epoxy resin materials is extremely extensive and important, and the generation of bubbles in the mixing process needs to be prevented from influencing the performance of the epoxy resin materials. At present, the conventional method for eliminating bubbles mainly adopts a mechanical method and a chemical method, but the two methods have certain defects, and the mechanical defoaming can not be completely defoamed; the adoption of the chemical defoaming principle causes the problems of high consumption of the defoaming agent and possible change of the performance of the base fluid.
Disclosure of Invention
The invention aims to provide an ultrasonic degassing device for epoxy resin mixing and a degassing method thereof, which can effectively solve the problems of incomplete defoaming in the process of epoxy resin mixing by a mechanical method, change of base liquid performance by defoaming by a chemical method and the like. The purpose of eliminating bubbles in the process of mixing the epoxy resin through the device is achieved.
In order to solve the above technical problems, the present invention provides an ultrasonic degassing apparatus for epoxy resin compounding, comprising:
the side wall of the box body is provided with a feeding valve and an air supply valve respectively;
the feeding pump body is respectively connected with an external material source and a feeding valve;
the air compressor is respectively connected with an external air source and an air supply valve;
the barometer is arranged on the box body and used for monitoring the air pressure in the box body;
the ultrasonic transmitter is arranged in the box body and used for transmitting ultrasonic signals to the interior of the box body.
Preferably, a mixing box is arranged between the feed valve and the feed pump body.
Preferably, the air compressor has power of 3000W, exhaust gas volume of 240L/min, volume of 50L, voltage of 220V, net weight of 77kg, maximum pressure of 0.7MPa, external dimensions of 1190mm in length, 430mm in width and 700mm in height.
Preferably, the working environment temperature of the barometer is-40-70 ℃.
Preferably, the internal dimensions of the box body (1) are 600mm in length, 600mm in width and 800mm in height.
The invention also provides an ultrasonic degassing method, which comprises the following steps:
opening a feeding valve, and injecting an epoxy resin material into the box body;
opening the gas valve, simultaneously opening the air compressor, and inflating the interior of the box body;
reading the value of the barometer, and closing the air compressor and the air valve until the air pressure in the box body is stable;
presetting ultrasonic frequency and working time, and opening ultrasonic to send ultrasonic signals to the interior of the box body.
Preferably, the effective sound pressure P of the ultrasonic signal e Satisfies the following conditions:
preferably, the acoustic energy of the ultrasonic signal is expressed as acoustic kinetic energy Δ E k Harmony potential energy Delta E p And the sum satisfies:
V 0 expressed as volume of the tank, p 0 Expressed as the density of the material inside the tank, and P is expressed as the pressure inside the tank; c. C 0 Waves being ultrasonic signals within the tankA long frequency.
Preferably, the acoustic energy density epsilon of the ultrasonic signal satisfies:
preferably, the wavelength frequency c of the ultrasonic wave satisfies:
c＝λf
in the process of medium propagation of the ultrasonic wave, the average sound power W meets the following conditions:
u e effective particle velocity; p is a radical of e Is the effective sound pressure amplitude; p is a radical of a The maximum sound pressure amplitude value; u. of a Effective particle velocity; wherein the content of the first and second substances,
the invention has the following beneficial effects:
the ultrasonic degassing device for epoxy resin mixing can effectively solve the problems of incomplete defoaming in a mechanical method, change of base liquid performance due to defoaming in a chemical method and the like in the epoxy resin mixing process. The device can be used for eliminating bubbles in the epoxy resin mixing process.
Drawings
FIG. 1 is a schematic structural diagram of an ultrasonic degassing apparatus for epoxy resin compound according to an embodiment of the present invention.
Reference numerals:
1. a box body; 2. a feed valve; 3. a mixing box; 4. an ultrasonic transmitter; 5. a barometer; 6. an air supply valve; 7. an air compressor; 8. an external gas source.
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 ultrasonic degassing apparatus for epoxy resin mixing, comprising a tank 1, a feed pump body, an air compressor 7, a barometer 5 and an ultrasonic emitter 4, wherein the side wall of the tank 1 is respectively provided with a feed valve 2 and an air supply valve 6; the feeding pump body is respectively connected with an external material source and a feeding valve 2; the air compressor 7 is respectively connected with an external air source 8 and an air supply valve 6; the barometer 5 is arranged on the box body 1 and used for monitoring the air pressure in the box body 1; the ultrasonic transmitter 4 is arranged on the box body 1 and used for sending an ultrasonic signal to the interior of the box body 1.
In some preferred embodiments of the invention, a mixing box 3 is arranged between the feed valve 2 and the feed pump body.
In some preferred embodiments of the present invention, the air compressor 7 has a power of 3000W, an air displacement of 240L/min, a volume of 50L, a voltage of 220V, a net weight of 77kg, a maximum pressure of 0.7MPa, an external dimension of 1190mm in length, 430mm in width and 700mm in height.
In some preferred embodiments of the present invention, the working environment temperature of the barometer 5 is-40 to 70 ℃.
In some preferred embodiments of the present invention, the internal dimensions of the housing 1(1) are 600mm long, 600mm wide and 800mm high.
Further, the supply valve 2 is intended to control the feeding of the epoxy resin through the valve while ensuring that no other gas is introduced into the tank 1 except for the feeding step. The feeding valve 2 is arranged at the top of the box body 1, and the adopted valve is an optimized T-S490 valve which can well ensure the tightness.
The mixing box 3 is connected with the box body 1 through a feeding valve 2. The mixing box 3 is intended to store the epoxy material prior to entering the housing 1.
The barometer 5 is arranged at the top of the box body 1, and the barometer and the box body are connected through M20 threads. The air pressure meter 5 adopts an optimal Y-100 pressure meter, the working environment temperature of the pressure meter is-40-70 ℃, the actual working condition can be better met, and the accuracy grade of the pressure meter is 1.6 grade, so that the reading is accurate.
The ultrasonic transmitter 4 is preferably a KMD-M1 ultrasonic transmitter 4, and is mounted on the top of the box body 1 for transmitting ultrasonic signals into the box. The adopted equipment adopts 220V voltage for power supply, has a timing function and can realize timing on-off. Meanwhile, the frequency of the device is adjustable, and the ultrasonic frequency can be displayed in real time through a digital display device, so that the requirements of the device are well met.
The air supply valve 6 is arranged on the side wall of the box body 1 and connects the air compressor 7 with the box body 1. The air supply valve 6 is preferably an QFR-01 ball valve and the air compressor 7 is preferably an E50L-750 W.sup.2 type air compressor 7. The air compressor 7 has the advantages of small volume, easy operation, rapid air charging and the like.
The external air source 8 can be a gas cylinder which is arranged on the right side of the air compressor 7, and the gas cylinder is of a steel structure and has certain pressure resistance, so that the safety of the gas cylinder is guaranteed.
The invention also provides an ultrasonic degassing method, which comprises the following steps:
opening a feeding valve, and injecting an epoxy resin material into the box body;
opening the gas valve, simultaneously opening the air compressor, and inflating the interior of the box body;
reading the value of the barometer, and closing the air compressor and the air valve until the air pressure in the box body is stable;
presetting ultrasonic frequency and working time, and opening ultrasonic to send ultrasonic signals to the interior of the box body.
In some preferred embodiments of the invention, the effective sound pressure P of the ultrasonic signal e Satisfies the following conditions:
in some preferred embodiments of the invention, the acoustic energy of the ultrasonic signal is expressed as acoustic kinetic energy Δ E k Harmony potential energy Delta E p And the sum satisfies:
V 0 expressed as volume of the tank, p 0 Expressed as the density of the material inside the tank, P is expressed as the pressure inside the tank; c. C 0 Is the wavelength frequency of the ultrasonic signal in the tank.
In some preferred embodiments of the present invention, the acoustic energy density ε of the ultrasonic signal satisfies:
in some preferred embodiments of the present invention, the wavelength frequency c of the ultrasonic wave satisfies:
c＝λf
in the process of medium propagation of the ultrasonic wave, the average sound power W meets the following conditions:
u e effective particle velocity; p is a radical of e Is the effective sound pressure amplitude; p is a radical of formula a The maximum sound pressure amplitude value; u. of a Effective particle velocity; wherein the content of the first and second substances,
it follows that ultrasound can obtain relatively large power, making it widely used. In the process of ultrasonic wave transmission, the medium can generate molecular vibration under the action of sound waves, and the vibration frequency is consistent with the frequency of the sound waves. In order to enable adequate degassing of the epoxy resin in the degassing vessel, a frequency of 5X 10 is selected 7 Hz。
According to the steps, the gas exchange system is adopted to maintain a certain air pressure of the epoxy resin degassing equipment, the ultrasonic emitter is turned on, the frequency is set, and the epoxy resin material is degassed for a certain time. The interior of the epoxy resin material after degassing and defoaming is more uniform, the residual stress generated during curing is reduced, and the product performance and stability are improved.
In summary, a preferred embodiment of the present invention provides an ultrasonic degassing apparatus for epoxy resin compounds, which is compared with the prior art:
the ultrasonic degassing device for epoxy resin mixing can effectively solve the problems of incomplete defoaming in a mechanical method, change of base liquid performance due to defoaming in a chemical method and the like in the epoxy resin mixing process. The device can be used for eliminating bubbles in the epoxy resin mixing process.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various 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 ultrasonic degasser for epoxy mixing, comprising:
the gas supply device comprises a box body (1), wherein a feed valve (2) and a gas supply valve (6) are respectively arranged on the side wall of the box body (1);
the feeding pump body is respectively connected with an external material source and a feeding valve (2);
the air compressor (7), the said air compressor (7) connects external air supply (8) and air supply valve (6) separately;
the air pressure gauge (5) is arranged in the box body (1) and used for monitoring the air pressure in the box body (1);
the ultrasonic transmitter (4) is arranged on the box body (1) and used for sending an ultrasonic signal to the interior of the box body (1).
2. An ultrasonic degassing apparatus for epoxy resin compounds according to claim 1, characterized in that: a mixing box (3) is arranged between the feeding valve (2) and the feeding pump body.
3. An ultrasonic degassing apparatus for epoxy resin compounds according to claim 1, characterized in that: the power of the air compressor (7) is 3000W, the air displacement is 240L/min, the volume is 50L, the voltage is 220V, the net weight is 77kg, the highest pressure can reach 0.7Mpa, and the external dimension of the air compressor is 1190mm in length, 430mm in width and 700mm in height.
4. An ultrasonic degassing apparatus for epoxy resin compounds according to claim 1, characterized in that: the working environment temperature of the barometer (5) is-40-70 ℃.
5. An ultrasonic degassing apparatus for epoxy resin compounds according to claim 1, characterized in that: the internal dimension of box (1) is for length 600mm, wide 600mm, height 800 mm.
6. An ultrasonic degassing method, characterized in that: the method comprises the following steps:
opening a feeding valve, and injecting an epoxy resin material into the box body;
opening the gas valve, simultaneously opening the air compressor, and inflating the interior of the box body;
reading the value of the barometer, and closing the air compressor and the air valve until the air pressure in the box body is stable;
presetting ultrasonic frequency and working time, and opening ultrasonic to send ultrasonic signals to the interior of the box body.
7. The ultrasonic degassing method according to claim 6, wherein: effective sound pressure P of the ultrasonic signal e Satisfies the following conditions:
8. the ultrasonic degassing method according to claim 6, wherein: the acoustic energy of the ultrasonic signal is represented as acoustic kinetic energy Δ E k Harmony potential energy Delta E p And the sum satisfies:
V 0 expressed as volume of the tank, p 0 Expressed as the density of the material inside the tank, P is expressed as the pressure inside the tank; c. C 0 Is the wavelength frequency of the ultrasonic signal in the tank.
9. The ultrasonic degassing method according to claim 8, wherein: the acoustic energy density epsilon of the ultrasonic signal satisfies the following conditions:
10. the ultrasonic degassing method according to claim 9, wherein: the wavelength frequency c of the ultrasonic wave satisfies:
c＝λf
in the process of medium propagation of the ultrasonic wave, the average sound power W meets the following conditions:
u e effective particle velocity; p is a radical of e Effective sound pressure amplitude; p is a radical of a The maximum sound pressure amplitude value; u. of a Effective particle velocity; wherein the content of the first and second substances,
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210737692.2A CN115107204A (en) | 2022-06-24 | 2022-06-24 | Ultrasonic degassing device for epoxy resin mixed material and degassing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210737692.2A CN115107204A (en) | 2022-06-24 | 2022-06-24 | Ultrasonic degassing device for epoxy resin mixed material and degassing method thereof |
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| CN115107204A true CN115107204A (en) | 2022-09-27 |
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| CN202210737692.2A Pending CN115107204A (en) | 2022-06-24 | 2022-06-24 | Ultrasonic degassing device for epoxy resin mixed material and degassing method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070047979A (en) * | 2005-11-03 | 2007-05-08 | 주식회사 엘지화학 | Method for stripping residual monomer in the polymer latex or slurry using ultrasonic wave under vacuum and stripper using the same |
| CN215339673U (en) * | 2021-05-20 | 2021-12-28 | 华北电力科学研究院有限责任公司西安分公司 | Waste oil ultrasonic degassing device in online oil chromatography calibration |
-
2022
- 2022-06-24 CN CN202210737692.2A patent/CN115107204A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070047979A (en) * | 2005-11-03 | 2007-05-08 | 주식회사 엘지화학 | Method for stripping residual monomer in the polymer latex or slurry using ultrasonic wave under vacuum and stripper using the same |
| CN215339673U (en) * | 2021-05-20 | 2021-12-28 | 华北电力科学研究院有限责任公司西安分公司 | Waste oil ultrasonic degassing device in online oil chromatography calibration |
Non-Patent Citations (1)
| Title |
|---|
| 李路海等: "《涂布复合技术》", vol. 1, 武汉理工大学出版社, pages: 134 - 136 * |
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