CN101626643A - Microwave auxiliary heating body and manufacturing method thereof - Google Patents
Microwave auxiliary heating body and manufacturing method thereof Download PDFInfo
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- CN101626643A CN101626643A CN200910056038A CN200910056038A CN101626643A CN 101626643 A CN101626643 A CN 101626643A CN 200910056038 A CN200910056038 A CN 200910056038A CN 200910056038 A CN200910056038 A CN 200910056038A CN 101626643 A CN101626643 A CN 101626643A
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- microwave
- heating body
- auxiliary heating
- microwave auxiliary
- fluorine
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Abstract
The invention relates to a microwave auxiliary heating body, which is applicable to a microwave heating system. The microwave auxiliary heating body consists of an internal microwave strong absorber and an outer wrapping layer containing chlorinated polyolefin. The whole microwave auxiliary heating body is shaped as a polygonal geometry. The invention is an auxiliary heating body of a device which is used for carrying out microwave resolution, extraction and synthesis and the like on the samples in the industries of scientific research, medical treatment, food, environment protection, epidemic prevention, commodity inspection, metallurgical mining industry and petrification and the like, and is especially used for organic extraction and organic synthesis tests of the samples with poorer microwave absorption. The microwave auxiliary heating body is arranged in a reaction container and is immersed in reaction solution. The used microwave auxiliary heating body can improve the reaction speed of the sample, and shorten the reaction speed. The microwave auxiliary heating body solves the problems that the heating of the furnace cavity wall is caused by large amount of redundant microwave in the microwave furnace and the microwave reflects and feedbacks to the microwave generating source so as to reduce the service life, and has the advantages of chemical corrosion resistance, high temperature resistance, no absorption and no pollution to the sample, simple manufacture and low cost and the like.
Description
Technical field:
The present invention system is used for industries such as medical treatment, food, environmental protection, epidemic prevention, commodity inspection, metallurgical petrochemical industry sample is carried out a kind of auxiliary heating body of micro-wave digestion, extraction and device such as synthetic, especially for a kind of auxiliary heating body and the manufacture method thereof in the relatively poor organic extraction of absorption of sample microwave, the organic synthesis test.
Background technology:
Along with development of modern science and technology, domestic emerging microwave chemical technology emerges rapidly, micro-wave digestion, extraction and microwave sampling technology such as synthetic or have been applied, promote the change and the development of China's experimental chemistry research and sample detection technology greatly, opened up research application.Micro-wave digestion, extraction and synthetic instrument equipment have become the important means of research chemical reaction mechanism and check and analysis sample, be widely used in industries such as colleges and universities, scientific research, medical treatment, food, environmental protection, epidemic prevention, commodity inspection, metallurgical mining industry and petrochemical industry, become the indispensable pre-treatment instrument of sample preparation work.
A lot of samples are because self polarity is poor, dielectric loss is little, and when using microwave apparatus to handle, its programming rate is slow, causes a large amount of microwaves more than needed simultaneously.These microwaves more than needed can be radiated the furnace chamber wall or feed back on the microwave source, have produced the overheated or problems such as microwave device decline in useful life even damage of furnace chamber.Yet, absorb microwave material by force and tend to absorbent solution, contaminated samples, not resistance to chemical attack, influenced the precision of check and analysis, and resistance to chemical attack, non-absorbent solution, not the material of contaminated samples to absorb microwave very poor.
In view of the above problems, the present invention is by selecting suitable microwave absorbing material, and suitable moulding process provides a kind of resistance to chemical attack for the sample of wave-sucking performance difference carries out Microwave Treatment, do not absorb and hold liquid, pollute little, simple, effective solution.
Summary of the invention:
The objective of the invention is to sample for the wave-sucking performance difference carries out Microwave Treatment a kind of microwave-assisted heating material that is used for is provided.
For reaching this purpose, technical scheme of the present invention is as follows:
A kind of microwave auxiliary heating body is applicable to microwave heating system, it is characterized in that, described microwave-assisted heating material is made up of the strong absorber of microwave and the outer fluorine-containing polyolefin integument of inside, and described microwave-assisted heating material integral body is polygon geometry.
According to microwave auxiliary heating body of the present invention, it is characterized in that the profile of described microwave auxiliary heating body is be selected from cuboid, cylinder, spheroid, centrum or other polygon geometries a kind of.
According to microwave auxiliary heating body of the present invention, it is characterized in that the strong absorber of the microwave of described inside is at 3000MHz, the tan tan δ＞1500*10 of 25 ℃ dielectric loss angle
-4
According to microwave auxiliary heating body of the present invention, it is characterized in that the strong absorber of the microwave of described inside is for being selected from Si C, Fe
3O
4, Co
2O
3, Mn
3O
4, graphite or carbon dust a kind of.It is high temperature resistant greater than 250 ℃.
According to microwave auxiliary heating body of the present invention, it is characterized in that described fluorine-containing polyolefin is fluorine-containing polyethylene.
According to microwave auxiliary heating body of the present invention, it is characterized in that the strong absorber of the microwave of described inside is Powdered powder.
According to microwave auxiliary heating body of the present invention, it is characterized in that the strong absorber of the microwave of described inside is a blocks of solid.
Purpose of the present invention is to provide a kind of manufacture method that is used for the microwave-assisted heating material again.
Manufacture method according to a kind of microwave auxiliary heating body of the present invention is characterized in that,
A kind of manufacture method of microwave auxiliary heating body, it is characterized in that, during moulding, the strong absorber of microwave is placed the mould of making, fill up fluorine-containing polyolefine powder all around, behind die cast, keep 1 hour sintering through 330 ~ 385 ℃ of high temperature again and form, make the strong absorber of microwave be wrapped up fully thus by fluorine-containing polyolefin layer.
Microwave auxiliary heating body of the present invention is placed in the reaction vessel, invade in the reaction solution, after microwave was opened, the strong absorbing material 1 of microwave absorbed microwave and temperature rises rapidly.
By thermal radiation, heat conduction heat is passed to reaction solution, thereby reaction solution is heated up rapidly, accelerate the reaction speed of sample.Simultaneously, microwave auxiliary heating body has absorbed a large amount of microwaves, has significantly reduced the residue microwave in the microwave oven, thereby has reduced the caloric value of furnace cavity, has avoided the microwave reflection feedback to return microwave source, has improved the useful life of microwave source.
According to the present invention, outer field fluorine-containing polyolefin integument is complete sealed envelope, and reaction solution can not infiltrate microwave absorbing material, and microwave absorbing material can not pollute reaction solution yet.Fluorine-containing polyolefin has chemical corrosions such as good strong acid-base resistance, organic solvent, and is high temperature resistant, makes microwave auxiliary heating body prolonged and repeatedly to use.
Use a kind of microwave auxiliary heating body provided by the invention, it is more than needed in a large number to have solved the microwave that produces when Microwave Treatment is difficult to absorb microwave sample, the difficult problem that the sample programming rate is slow, simultaneously, this auxiliary heating body resistance to chemical attack, non-absorbent solution, contaminated samples not, reusable.
In addition, according to a kind of microwave auxiliary heating body of the present invention, it is simple in structure, and is easy to make at the bottom of the cost, and long service life does not influence the check and analysis result of sample.
The accompanying drawing simple declaration
Fig. 1 is the profile of a kind of microwave auxiliary heating body of the present invention
Embodiment
Provide figure of the present invention according to Fig. 1 below and described in detail, so that understand functional characteristics of the present invention better.
Embodiment 1
As shown in Figure 1, microwave auxiliary heating body comprises: 1. strong absorbing material 2. fluorine-containing polyethylene integuments of the microwave of inside.
In the present embodiment, the Powdered powder that the strong absorbing material 1 of inner microwave is Si C, particle diameter 100 ~ 1200 orders, dielectric loss angle tangent tan δ is 1762X10
-4(3000MHz, 25 ℃).High temperature resistant greater than 250 ℃.
To sinter the blocks of solid material into after the above-mentioned dusty material compression moulding.Microwave absorbing material is placed fluorine-containing polyolefin powder,,, keep 1 hour sintering through 385 ℃ of high temperature again, form the outside fluorine-containing polyolefin integument 2 of sealed envelope fully through excess pressure compression moulding by mould.
In the present embodiment, described microwave auxiliary heating body is a cylinder.
Embodiment 2
Except described microwave auxiliary heating body was centrum, other made microwave auxiliary heating body of the present invention as embodiment 1.
Embodiment 3
Except described microwave auxiliary heating body is the Fe of spheroid
3O
4Outside, other make microwave auxiliary heating body of the present invention as embodiment 1.
Embodiment 4
Except described microwave auxiliary heating body is the Co of cuboid
2O
3Outside, other make microwave auxiliary heating body of the present invention as embodiment 1.
Embodiment 5
Except described microwave auxiliary heating body is the Mn of square
3O
4Outside, other make microwave auxiliary heating body of the present invention as embodiment 1.
Embodiment 6
Except described microwave auxiliary heating body was the graphite or carbon dust of square, other made microwave auxiliary heating body of the present invention as embodiment 1.
Described microwave auxiliary heating body is placed in the reaction vessel, invade in the reaction solution, after microwave is opened, the strong absorbing material of microwave 1 absorbs microwave and temperature rises rapidly, by thermal radiation, heat conduction heat is passed to reaction solution, thereby reaction solution is heated up rapidly, accelerate the reaction speed of sample.Simultaneously, microwave auxiliary heating body has absorbed a large amount of microwaves, has significantly reduced the residue microwave in the microwave oven, thereby has reduced the caloric value of furnace cavity, has avoided the microwave reflection feedback to return microwave source, has improved the useful life of microwave source.
Outer field fluorine-containing polyolefin integument is complete sealed envelope, and reaction solution can not infiltrate microwave absorbing material, and microwave absorbing material can not pollute reaction solution yet.Fluorine-containing polyolefin has chemical corrosions such as good strong acid-base resistance, organic solvent, and is high temperature resistant, makes microwave auxiliary heating body prolonged and repeatedly to use.
Use a kind of microwave auxiliary heating body provided by the invention, it is more than needed in a large number to have solved the microwave that produces when Microwave Treatment is difficult to absorb microwave sample, the difficult problem that the sample programming rate is slow, simultaneously, this auxiliary heating body resistance to chemical attack, non-absorbent solution, contaminated samples not, reusable.
In addition, according to a kind of microwave auxiliary heating body of the present invention, it is simple in structure, and is easy to make at the bottom of the cost, and long service life does not influence the check and analysis result of sample.
Claims (8)
1. a microwave auxiliary heating body is applicable to microwave heating system, it is characterized in that, described microwave-assisted heating material is made up of the strong absorber of microwave and the outer fluorine-containing polyolefin integument of inside, and described microwave-assisted heating material integral body is polygon geometry.
2. microwave auxiliary heating body according to claim 1 is characterized in that, the profile of described microwave auxiliary heating body is be selected from cuboid, cylinder, spheroid, centrum or other polygon geometries a kind of.
3. microwave auxiliary heating body according to claim 1 is characterized in that, the strong absorber of the microwave of described inside is at 3000MHz, the tan tan δ＞1500X10 of 25 ℃ dielectric loss angle
-4
4. microwave auxiliary heating body according to claim 1 is characterized in that, the strong absorber of the microwave of described inside is for being selected from Si C, Fe
3O
4, Co
2O
3, Mn
3O
4, graphite or carbon dust a kind of, high temperature resistant greater than 250 ℃.
5. microwave auxiliary heating body according to claim 3 is characterized in that, described fluorine-containing polyolefin is fluorine-containing polyethylene.
6. microwave auxiliary heating body according to claim 1 is characterized in that, the strong absorber of the microwave of described inside is Powdered powder.
7. microwave auxiliary heating body according to claim 1 is characterized in that, the strong absorber of the microwave of described inside is a blocks of solid.
8. the manufacture method of a microwave auxiliary heating body, it is characterized in that, during moulding, the strong absorber of microwave is placed the mould of making, fill up fluorine-containing polyolefine powder all around, behind die cast, keep 1 hour sintering through 330 ~ 385 ℃ of high temperature again and form, make the strong absorber of microwave be wrapped up fully thus by fluorine-containing polyolefin layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910056038A CN101626643A (en) | 2009-08-07 | 2009-08-07 | Microwave auxiliary heating body and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910056038A CN101626643A (en) | 2009-08-07 | 2009-08-07 | Microwave auxiliary heating body and manufacturing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101626643A true CN101626643A (en) | 2010-01-13 |
Family
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|---|---|---|---|
| CN200910056038A Pending CN101626643A (en) | 2009-08-07 | 2009-08-07 | Microwave auxiliary heating body and manufacturing method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN101626643A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102510594A (en) * | 2011-09-21 | 2012-06-20 | 吉林大学 | Microwave medium heating tube |
| CN102998166A (en) * | 2012-11-27 | 2013-03-27 | 天津师范大学 | Microwave sample pretreatment method applied to organic carbon detection |
| CN103695182A (en) * | 2013-05-16 | 2014-04-02 | 黑龙江惠民兴生物科技有限公司 | Method for supercritical extraction of linolenic acid |
-
2009
- 2009-08-07 CN CN200910056038A patent/CN101626643A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102510594A (en) * | 2011-09-21 | 2012-06-20 | 吉林大学 | Microwave medium heating tube |
| CN102998166A (en) * | 2012-11-27 | 2013-03-27 | 天津师范大学 | Microwave sample pretreatment method applied to organic carbon detection |
| CN103695182A (en) * | 2013-05-16 | 2014-04-02 | 黑龙江惠民兴生物科技有限公司 | Method for supercritical extraction of linolenic acid |
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Application publication date: 20100113 |