CN108129729A - A kind of preparation process of the novel plastic type magnetron based on permanent-magnet material - Google Patents
A kind of preparation process of the novel plastic type magnetron based on permanent-magnet material Download PDFInfo
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- CN108129729A CN108129729A CN201711388427.3A CN201711388427A CN108129729A CN 108129729 A CN108129729 A CN 108129729A CN 201711388427 A CN201711388427 A CN 201711388427A CN 108129729 A CN108129729 A CN 108129729A
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- 239000000463 material Substances 0.000 title claims abstract description 16
- 229920003023 plastic Polymers 0.000 title claims abstract description 15
- 239000004033 plastic Substances 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- -1 polyethylene Polymers 0.000 claims abstract description 31
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000004698 Polyethylene Substances 0.000 claims abstract description 29
- 229920000573 polyethylene Polymers 0.000 claims abstract description 29
- 239000003054 catalyst Substances 0.000 claims abstract description 27
- 239000000956 alloy Substances 0.000 claims abstract description 19
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 19
- 239000010949 copper Substances 0.000 claims abstract description 18
- 229910052786 argon Inorganic materials 0.000 claims abstract description 15
- 238000002844 melting Methods 0.000 claims abstract description 11
- 230000008018 melting Effects 0.000 claims abstract description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052802 copper Inorganic materials 0.000 claims abstract description 10
- 239000007789 gas Substances 0.000 claims abstract description 10
- 230000006698 induction Effects 0.000 claims abstract description 6
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000010891 electric arc Methods 0.000 claims abstract description 5
- 239000004615 ingredient Substances 0.000 claims abstract description 5
- 229910052742 iron Inorganic materials 0.000 claims abstract description 5
- 238000003801 milling Methods 0.000 claims abstract description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 5
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 5
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims abstract description 5
- 229920002554 vinyl polymer Polymers 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 6
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 238000001746 injection moulding Methods 0.000 claims description 4
- 239000000155 melt Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 239000000376 reactant Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 239000002002 slurry Substances 0.000 claims description 2
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 239000000243 solution Substances 0.000 description 8
- 230000005684 electric field Effects 0.000 description 5
- 210000002421 cell wall Anatomy 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000005347 demagnetization Effects 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- PVDUDPSBTPMBLM-UHFFFAOYSA-N C[Hf]C1C=CC=C1 Chemical compound C[Hf]C1C=CC=C1 PVDUDPSBTPMBLM-UHFFFAOYSA-N 0.000 description 1
- UGVVIPAIDGTTNN-UHFFFAOYSA-N C[Zr]C Chemical compound C[Zr]C UGVVIPAIDGTTNN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005685 electric field effect Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 125000004836 hexamethylene group Chemical class [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000005426 magnetic field effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0843—Cobalt
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/085—Copper
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0856—Iron
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
Abstract
The invention discloses a kind of preparation processes of the novel plastic type magnetron based on permanent-magnet material, are prepared by following steps：R, Co, Fe, Cu, Zr are pressed into Sm (CoFeCuZrR)zThe proportioning of (Z=7.4~8.3) is put in after being configured in electric arc furnaces, is evacuated down to 10‑3Pa or more then passes to the high purity argon of 0.8~1.2 atmospheric pressure, under the protection of argon gas melt back obtain the uniform alloy cast ingot of ingredient 34 times.The melting in vacuum induction furnace by gained alloy, the vacuum degree of melting are 10 3Pa, water cooled copper mould cast, obtained alloy pig, under nitrogen, argon gas protection through coarse crushing, in broken, milling to 36 μm.Make vinyl polymerization in the presence of antigravity system in the reactor, to form polyethylene, wherein the antigravity system includes the first catalyst and the second catalyst；And the required combination of target melt flow ratio (MFR) and molecular weight distribution (MWD) with forming distribution (CD) based on the polyethylene.
Description
Technical field
The present invention relates to a kind of magnetrons, and in particular to a kind of preparation of the novel plastic type magnetron based on permanent-magnet material
Technique.
Background technology
Magnetron is a kind of electron tube for being used for generating microwave energy.Substantially one be placed in stationary magnetic field two
Pole pipe.Under the control of orthogonal stationary magnetic field and steady electric field with electromagnetic field of high frequency phase interaction occurs for electronics in pipe
With energy conversion is obtained from steady electric field into microwave energy, so as to achieve the purpose that generate microwave energy.Meanwhile magnetron
It is a kind of consumables, easy aging and demagnetization, magnetron is usually operated at π moulds, microwave electric field at two neighboring resonator accent
Phase just differs 180 °, i.e. microwave electric field direction is exactly the opposite (2).Although this microwave field is stationary field, in π moulds
In the case of, it is equivalent to two identical microwave fields and circumferentially moves in opposite direction, the phase velocity value of two fields is equal.From
The electronics that emission of cathode goes out makees wheel cycloid motion under crossed electric and magnetic field effect.DC voltage and stationary magnetic field are adjusted, makes electronics
The phase velocity v of move in the direction microwave field is exactly equal to (in formula in the average drift velocity v=E/B of circumferencial direction
E is the DC electric field average value that DC voltage is generated in interaction space, and B is axial constant magnetic induction intensity), electronics can
To be synchronized with the movement with microwave field.During being synchronized with the movement, part electronics in microwave decelerating field is in by the straight of oneself
Stream potential energy gradually gives microwave field, and draw close to anode, finally for collected by anode.This part electronics shifts energy to microwave field
Amount, is conducive to establish stable microwave oscillation in magnetron, therefore referred to as favorable electron, and existing magnetron is not only easily old
Change and demagnetization, and plasticity is very poor, and when being processed, difficulty is quite high.
Invention content
Present invention aims at a kind of preparation process of the novel plastic type magnetron based on permanent-magnet material is provided, to solve
Existing magnetron not only easy aging and demagnetization, and plasticity is very poor, the quite high problem of difficulty when being processed.
In order to solve the above technical problem, the present invention provides following technical solutions：
The present invention provides a kind of preparation processes of the novel plastic type magnetron based on permanent-magnet material, pass through following steps
It is prepared：
Step 1：R, Co, Fe, Cu, Zr are pressed into Sm (CoFeCuZrR)zThe proportioning of (Z=7.4~8.3) is put in after being configured
In electric arc furnaces, it is evacuated down to 10-3Pa or more then passes to the high purity argon of 0.8~1.2 atmospheric pressure, in the protection of argon gas
Lower melt back obtains ingredient uniform alloy cast ingot 3-4 times.
Step 2：By gained alloy melting in vacuum induction furnace in step 1), the vacuum degree of melting is 10-3Pa, water
Cold copper mould casting, obtained alloy pig, under nitrogen, argon gas protection through coarse crushing, in broken, milling to 3-6 μm.
Step 3：Make vinyl polymerization in the presence of antigravity system in the reactor, to form polyethylene, wherein described urge
Agent system includes the first catalyst and the second catalyst；And the target melt flow ratio (MFR) based on the polyethylene
With molecular weight distribution (MWD) and the required combination of composition distribution (CD), the institute of reactor described in reactor condition and feed-in is adjusted
The amount of the second catalyst is stated, to control the melt index of the polyethylene (MI) and density, is reacted after 15-45min in 150-
It is stirred at a temperature of 200 DEG C.
Step 4：Alloy powder obtained in step 2) is uniformly sprinkled upon on stirring thing in whipping process, is continued after being sprinkled into
Stir 5-10min.
Step 5：Object after stirring evenly is put into injection molding in mold.
As a preferred technical solution of the present invention, formed by following raw material proportioning：The R of 23~27wt%, 3.5~
The Cu of 5wt%, the Fe of 19~25wt%, the Zr of 1.5~3wt% of 1.5~3wt%, the Co of 18~26wt% and 12-
The polyethylene of 58wt%.
As a preferred technical solution of the present invention, the element R is at least rare earth element containing Sm.
As a preferred technical solution of the present invention, first catalyst includes bis- (n-propyl cyclopentadienyl groups) two
Methylcyclopentadienyl hafnium.
As a preferred technical solution of the present invention, second catalyst includes two (1- ethyl-indenyls) dimethyl
Zirconium.
As a preferred technical solution of the present invention, second catalyst is added to as fine tuning catalyst will be described
In the slurry of reactor described in first catalyst feed-in.
As a preferred technical solution of the present invention, the adjustment reactor condition includes the behaviour for adjusting the reactor
Make temperature, adjustment reactor condition is also comprising the comonomer concentration adjusted in the reactor in polyblend；Adjustment is anti-
Answer device condition also comprising the density of hydrogen adjusted in the reactor in polyblend；Reactor condition is adjusted also comprising tune
Reactant concentration in the whole reactor in polyblend is to meet the polyethylene in the range of the MFR of the polyethylene
MI targets；Adjustment reactor condition, which also includes, adjusts the reactant concentration in the reactor in polyblend to meet
The density targets of the polyethylene in the range of the MFR of the polyethylene.
In technical scheme of the present invention, the Cu of R, 3.5~5wt% containing 23~27wt%, the Fe of 19~25wt%,
The Zr of 1.5~3wt%, remaining be Co and polyethylene, wherein, element R is at least rare earth element containing Sm, wherein, it is described dilute
Native cobalt permanent magnetism volume density is 8.15~8.39g/cm3, and the rare earthcobalt permanent magnet metal structure includes the born of the same parents containing Sm2Co17 phases
Phase and around born of the same parents' phase and containing the cell wall of SmCo5 phases, the rare earthcobalt permanent magnet average crystal grain diameter for 40~
100 μm, in the cell wall, the half breadth of the content of Cu is 10nm hereinafter, catalyst finely tunes ratio, polymer reactor temperature
It can change under less constant density of pe and MI (I-2) with polymer reactor hydrogen and comonomer concentration
Obtain MFR ranges.The technology can advantageously provide the MI of wide scope under given catalyst system.In addition, in embodiment
In, MI controls can be controlled generally with MFR and are detached from.For the antigravity system of feed-in polymer reactor, polymer MI, MFR,
Density and CD can be by changing reactor condition, such as temperature, density of hydrogen and comonomer (such as 1- hexenes, butylene)
Concentration controls, and the combination of permanent-magnet material and polyethylene is realized by above-mentioned means, and make it have good plasticity.
Beneficial effects of the present invention：The Cu of R, 3.5~5wt% containing 23~27wt%, the Fe of 19~25wt%, 1.5
The Zr of~3wt%, remaining be Co and polyethylene, wherein, element R is at least rare earth element containing Sm, wherein, the rare earth
Cobalt permanent magnetism volume density is 8.15~8.39g/cm3, and the rare earthcobalt permanent magnet metal structure includes the born of the same parents containing Sm2Co17 phases
Phase and around born of the same parents' phase and containing the cell wall of SmCo5 phases, the rare earthcobalt permanent magnet average crystal grain diameter for 40~
100 μm, in the cell wall, the half breadth of the content of Cu is 10nm hereinafter, not only having by magnetron made from this technique
The performance of permanent magnetism, ductility and plasticity are splendid, are not only convenient for processing, and with the good market competitiveness.
Other than objects, features and advantages described above, the present invention also has other objects, features and advantages.
Below by embodiment, the present invention is described in further detail.
Specific embodiment
Embodiment 1
The present invention provides a kind of preparation process of the novel plastic type magnetron based on permanent-magnet material, by following raw material proportioning
It forms：The polyethylene of the Co and 50wt% of Zr, 20wt% of Fe, 2wt% of Cu, 20wt% of R, 4wt% of 23wt%.
It is prepared by following steps：
Step 1：R, Co, Fe, Cu, Zr are pressed into Sm (CoFeCuZrR)zThe proportioning of (Z=7.4~8.3) is put in after being configured
In electric arc furnaces, it is evacuated down to 10-3Pa or more then passes to the high purity argon of 0.8~1.2 atmospheric pressure, in the protection of argon gas
Lower melt back obtains ingredient uniform alloy cast ingot 3-4 times.
Step 2：By gained alloy melting in vacuum induction furnace in step 1), the vacuum degree of melting is 10-3Pa, water
Cold copper mould casting, obtained alloy pig, under nitrogen, argon gas protection through coarse crushing, in broken, milling to 3-6 μm.
Step 3：Make vinyl polymerization in the presence of antigravity system in the reactor, to form polyethylene, wherein described urge
Agent system includes the first catalyst and the second catalyst；And the target melt flow ratio (MFR) based on the polyethylene
With molecular weight distribution (MWD) and the required combination of composition distribution (CD), the institute of reactor described in reactor condition and feed-in is adjusted
The amount of the second catalyst is stated, to control the melt index of the polyethylene (MI) and density, is reacted after 15-45min in 150-
It is stirred at a temperature of 200 DEG C.
Step 4：Alloy powder obtained in step 2) is uniformly sprinkled upon on stirring thing in whipping process, is continued after being sprinkled into
Stir 5-10min.
Step 5：Object after stirring evenly is put into injection molding in mold.
Embodiment 2
The present invention provides a kind of preparation process of the novel plastic type magnetron based on permanent-magnet material, by following raw material proportioning
It forms：The polyethylene of the Co and 25wt% of Zr, 25wt% of Fe, 3wt% of Cu, 24wt% of R, 5wt% of 27wt%.
It is prepared by following steps：
Step 1：R, Co, Fe, Cu, Zr are pressed into Sm (CoFeCuZrR)zThe proportioning of (Z=7.4~8.3) is put in after being configured
In electric arc furnaces, it is evacuated down to 10-3Pa or more then passes to the high purity argon of 0.8~1.2 atmospheric pressure, in the protection of argon gas
Lower melt back obtains ingredient uniform alloy cast ingot 3-4 times.
Step 2：By gained alloy melting in vacuum induction furnace in step 1), the vacuum degree of melting is 10-3Pa, water
Cold copper mould casting, obtained alloy pig, under nitrogen, argon gas protection through coarse crushing, in broken, milling to 3-6 μm.
Step 3：Make vinyl polymerization in the presence of antigravity system in the reactor, to form polyethylene, wherein described urge
Agent system includes the first catalyst and the second catalyst；And the target melt flow ratio (MFR) based on the polyethylene
With molecular weight distribution (MWD) and the required combination of composition distribution (CD), the institute of reactor described in reactor condition and feed-in is adjusted
The amount of the second catalyst is stated, to control the melt index of the polyethylene (MI) and density, is reacted after 15-45min in 150-
It is stirred at a temperature of 200 DEG C.
Step 4：Alloy powder obtained in step 2) is uniformly sprinkled upon on stirring thing in whipping process, is continued after being sprinkled into
Stir 5-10min.
Step 5：Object after stirring evenly is put into injection molding in mold.
Finally it should be noted that：The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify to the technical solution recorded in foregoing embodiments or carry out equivalent replacement to which part technical characteristic.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention's
Within protection domain.
Claims (7)
1. a kind of preparation process of the novel plastic type magnetron based on permanent-magnet material, which is characterized in that by following steps system
It is standby to form：
Step 1：R, Co, Fe, Cu, Zr are pressed into Sm (CoFeCuZrR)zThe proportioning of (Z=7.4~8.3) is put in electric arc furnaces after being configured
It is interior, it is evacuated down to 10-3Pa or more then passes to the high purity argon of 0.8~1.2 atmospheric pressure, under the protection of argon gas repeatedly
Melting obtains ingredient uniform alloy cast ingot 3-4 times.
Step 2：By gained alloy melting in vacuum induction furnace in step 1), the vacuum degree of melting is 10-3Pa, water-cooled copper
Mould is poured into a mould, obtained alloy pig, under nitrogen, argon gas protection through coarse crushing, in broken, milling to 3-6 μm.
Step 3：Make vinyl polymerization in the presence of antigravity system in the reactor, to form polyethylene, wherein the catalyst
System includes the first catalyst and the second catalyst；And target melt flow ratio (MFR) based on the polyethylene and point
The required combination of son amount distribution (MWD) and composition distribution (CD) adjusts described the of reactor described in reactor condition and feed-in
The amount of two catalyst to control the melt index of the polyethylene (MI) and density, is reacted after 15-45min in 150-200 DEG C of temperature
It is stirred under degree.
Step 4：Alloy powder obtained in step 2) is uniformly sprinkled upon on stirring thing in whipping process, continues to stir after being sprinkled into
5-10min。
Step 5：Object after stirring evenly is put into injection molding in mold.
2. a kind of preparation process of novel plastic type magnetron based on permanent-magnet material according to claim 1, feature
It is, is formed by following raw material proportioning：The R of 23~27wt%, the Cu of 3.5~5wt%, the Fe of 19~25wt%, 1.5~
The polyethylene of the Zr of 3wt%, the Co of 18~26wt% and 12-58wt%.
3. a kind of preparation process of novel plastic type magnetron based on permanent-magnet material according to claim 1, feature
It is, the element R is at least rare earth element containing Sm.
4. a kind of preparation process of novel plastic type magnetron based on permanent-magnet material according to claim 2, feature
It is, first catalyst includes bis- (n-propyl cyclopentadienyl group) dimethyl hafniums.
5. a kind of preparation process of novel plastic type magnetron based on permanent-magnet material according to claim 2, feature
It is, second catalyst includes two (1- ethyl-indenyls) zirconium dimethyls.
6. a kind of preparation process of novel plastic type magnetron based on permanent-magnet material according to claim 1-5, special
Sign is that second catalyst is added to as fine tuning catalyst by the slurry of reactor described in the first catalyst feed-in
In.
7. a kind of preparation process of novel plastic type magnetron based on permanent-magnet material according to claim 1-6, special
Sign is that the adjustment reactor condition includes the operation temperature for adjusting the reactor, and adjustment reactor condition, which also includes, to be adjusted
Comonomer concentration in the whole reactor in polyblend；Reactor condition is adjusted also comprising in the adjustment reactor
Density of hydrogen in polyblend；Reactor condition is adjusted also comprising the reaction adjusted in the reactor in polyblend
Object concentration is to meet the MI targets of the polyethylene in the range of the MFR of the polyethylene；Reactor condition is adjusted also comprising adjustment
Reactant concentration in the reactor in polyblend is to meet the close of the polyethylene in the range of the MFR of the polyethylene
Spend target.
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| CN201711388427.3A CN108129729A (en) | 2017-12-20 | 2017-12-20 | A kind of preparation process of the novel plastic type magnetron based on permanent-magnet material |
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| CN201711388427.3A CN108129729A (en) | 2017-12-20 | 2017-12-20 | A kind of preparation process of the novel plastic type magnetron based on permanent-magnet material |
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|---|---|---|---|---|
| JP2009161599A (en) * | 2007-12-28 | 2009-07-23 | Riken Technos Corp | Ferromagnetic thermoplastic resin composition and use thereof |
| CN102071339A (en) * | 2011-01-24 | 2011-05-25 | 宁波科星材料科技有限公司 | Samarium-cobalt permanent magnet material and preparation method thereof |
| CN102516625A (en) * | 2011-12-03 | 2012-06-27 | 广东聚缘塑料科技有限公司 | Magnetic plastic produced by waste plastic |
| CN102952386A (en) * | 2012-10-31 | 2013-03-06 | 中国计量学院 | A kind of gradient magnetostrictive material and its preparation method |
| CN103325513A (en) * | 2013-07-18 | 2013-09-25 | 湖南航天工业总公司 | Samarium cobalt permanent magnetic material and preparation method thereof |
| CN104916382A (en) * | 2014-03-11 | 2015-09-16 | Nec东金株式会社 | Rare earth-cobalt permanent magnet |
| CN106029712A (en) * | 2014-02-11 | 2016-10-12 | 尤尼威蒂恩技术有限责任公司 | Method of producing polyethylene and polyethylene thereof |
-
2017
- 2017-12-20 CN CN201711388427.3A patent/CN108129729A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009161599A (en) * | 2007-12-28 | 2009-07-23 | Riken Technos Corp | Ferromagnetic thermoplastic resin composition and use thereof |
| CN102071339A (en) * | 2011-01-24 | 2011-05-25 | 宁波科星材料科技有限公司 | Samarium-cobalt permanent magnet material and preparation method thereof |
| CN102516625A (en) * | 2011-12-03 | 2012-06-27 | 广东聚缘塑料科技有限公司 | Magnetic plastic produced by waste plastic |
| CN102952386A (en) * | 2012-10-31 | 2013-03-06 | 中国计量学院 | A kind of gradient magnetostrictive material and its preparation method |
| CN103325513A (en) * | 2013-07-18 | 2013-09-25 | 湖南航天工业总公司 | Samarium cobalt permanent magnetic material and preparation method thereof |
| CN106029712A (en) * | 2014-02-11 | 2016-10-12 | 尤尼威蒂恩技术有限责任公司 | Method of producing polyethylene and polyethylene thereof |
| CN104916382A (en) * | 2014-03-11 | 2015-09-16 | Nec东金株式会社 | Rare earth-cobalt permanent magnet |
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Application publication date: 20180608 |