CN109251447A - The polytetrafluoroethylene material and its processing method of corona-resistant - Google Patents
The polytetrafluoroethylene material and its processing method of corona-resistant Download PDFInfo
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- CN109251447A CN109251447A CN201810857387.0A CN201810857387A CN109251447A CN 109251447 A CN109251447 A CN 109251447A CN 201810857387 A CN201810857387 A CN 201810857387A CN 109251447 A CN109251447 A CN 109251447A
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- Prior art keywords
- ptfe
- glass fiber
- boron nitride
- corona
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- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 94
- 239000004810 polytetrafluoroethylene Substances 0.000 title claims abstract description 94
- 239000000463 material Substances 0.000 title claims abstract description 41
- -1 polytetrafluoroethylene Polymers 0.000 title claims abstract description 29
- 238000003672 processing method Methods 0.000 title claims abstract description 11
- 229910052582 BN Inorganic materials 0.000 claims abstract description 36
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000003365 glass fiber Substances 0.000 claims abstract description 36
- 239000000203 mixture Substances 0.000 claims description 24
- 239000002245 particle Substances 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 6
- 238000000748 compression moulding Methods 0.000 claims description 4
- 238000007605 air drying Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 2
- 229910052796 boron Inorganic materials 0.000 claims description 2
- 230000005611 electricity Effects 0.000 abstract description 15
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000035882 stress Effects 0.000 description 13
- 230000000694 effects Effects 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 239000004020 conductor Substances 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000011810 insulating material Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 239000000945 filler Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229920000295 expanded polytetrafluoroethylene Polymers 0.000 description 1
- 239000003574 free electron Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004643 material aging Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 150000002927 oxygen compounds Chemical class 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
-
- 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
- C08K3/38—Boron-containing compounds
-
- 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
- C08K3/38—Boron-containing compounds
- C08K2003/382—Boron-containing compounds and nitrogen
- C08K2003/385—Binary compounds of nitrogen with boron
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
Abstract
The present invention provides the polytetrafluoroethylene material and its processing method of a kind of corona-resistant, and wherein the component of material includes: PTFE, chopped glass fiber, boron nitride and toner；The chopped glass fiber is 5%~30% relative to the weight ratio of the PTFE；The boron nitride is 1%~7% relative to the weight ratio of the PTFE；The toner is 0.1%~1% relative to the weight ratio of the PTFE.The polytetrafluoroethylene material and its processing method of a kind of corona-resistant of the invention, it can overcome the problems, such as that common PTFE material use condition in bank electricity system actual condition is not up to standard, and there is preferable resistance to pressure, corrosion resistance, high pressure resistant and maximum stress in bend.
Description
Technical field
The present invention relates to the polytetrafluoroethylene materials and its processing side of Material Field more particularly to a kind of corona-resistant
Method.
Background technique
Bank electricity power supply technique refers to that using land power supply, this power supply technique can be effective to the ship power supply for stopping harbour
Reduce ship reach port device generation pollution.According to the difference of voltage, low pressure bank electricity system and high voltage shore power system can be divided into.
High voltage shore power system operationally has biggish advantage relative to low pressure bank electricity system, is used to the number of cable connecting with ship
It is less, the connection of ship Yu bank electricity system can be rapidly completed, but its corresponding technical difficulty is also higher, no matter high pressure or
Low pressure, the critical device that cable connector works as bank electricity system, to the high temperature resistant of its insulating element, corrosion-resistant, resistance to height
The special operation conditions such as pressure have especially harsh requirement, for opposite land connector, are also subjected to brought by special bank electricity operating condition
The physical conditions such as particular stress, required insulating joint requires more harsh.
Bank electricity connector insulating materials need to usually meet the following conditions:
(1) corona effect, according to connection size required in IEC-80005, in connector high-pressure conductor and major insulation
Inevitably there is the air gaps of 2~5mm between body, and due to the limitation of mounting condition, the humidity of this air gap
It is higher, therefore dielectric strength is poor, inevitably generates shelf depreciation under operating voltage, causes the neutrality of air in gap
Molecular ionization, the free electron impact major insulation body dielectric surface ionized out, causes the temperature of material surface to increase, causes simultaneously
C-F key in PTFE breaks to form free radical, and pyrolysis product is mainly tetrafluoroethene, and the cracking of PTFE gradually leads to material aging
It directly generates crack and causes the breakdown under high voltage；
(2) fuel factor, the raising of the actual work temperature due to caused by conductor temp.-elevating and high operating ambient temperature (are up to
125 degree)；
(3) chemical stress, caused by the ozone as caused by during shelf depreciation and nitric acid；
(4) mechanical stress connects bending stress caused by conductor bends as long.
Under several different fillers that existing bank electricity connector generally uses and the relative dielectric constant and connector of pure PTFE
The correlation data of air gap field strength is as follows:
1, polytetrafluoroethylene (PTFE) (PTFE), relative dielectric constant 2.2, air gap field strength 1.6kV/mm；
2, polytetrafluoroethylene (PTFE) adds boron nitride (PTFE+NB), relative dielectric constant 2.1, air gap field strength 1.55kV/mm；
3, polytetrafluoroethylene (PTFE) adds boron nitride to add glass fibre (PTFE+NB+ glass), relative dielectric constant 2.6, air gap field strength
1.8kV/mm；
4, polytetrafluoroethylene (PTFE) adds Al2O3, relative dielectric constant 4.2, air gap field strength 2.6kV/mm；
5, polytetrafluoroethylene (PTFE) adds SiO2, relative dielectric constant 3.5, air gap field strength 3.4kV/mm；
Due to the high dielectric constant of filler metal oxide, reduce empty between connector internal high pressure electrode and insulating body
The discharge inception voltage in gas gap, therefore seriously reduce the service life and reliability of product.
Therefore, studying the connector of a kind of practical, reliable and suitable bank electricity product actual condition with insulating materials is ten
Divide necessary.
Summary of the invention
In view of the deficiency of the prior art, the present invention provide a kind of corona-resistant polytetrafluoroethylene material and its
Processing method can overcome the problems, such as that common PTFE material use condition in bank electricity system actual condition is not up to standard, and have compared with
Good insulation performance, weatherability, corrosion resistance and mechanical performance.
To achieve the goals above, the present invention provides a kind of polytetrafluoroethylene material of corona-resistant, and component includes:
PTFE, chopped glass fiber, boron nitride and toner；The chopped glass fiber is 5%~30% relative to the weight ratio of the PTFE；It is described
Boron nitride is 1%~7% relative to the weight ratio of the PTFE；The toner is 0.1% relative to the weight ratio of the PTFE
~1%.
Preferably, the bulk density of the PTFE is 300g/l~450g/l；Relative density of the PTFE relative to water
It is 2.13~2.19.
Preferably, the water content of the PTFE is less than 0.04%；The average diameter of the particle of the PTFE is 30~70um.
Preferably, the chopped glass fiber uses diameter for the E of 11um grade chopped glass fiber.
Preferably, the purity of the boron nitride is greater than 99.95%；The particle diameter of the boron nitride is 5~10um；It is described
The tensile strength of boron nitride is greater than 27MPa；The elongation at break of the boron nitride is 300%；The shore hardness of the boron nitride
It is 60~65；The boron nitride relative to water relatively close 2.13~2.24.
It preferably, is in stick, length is 30cm~100cm, and diameter is 3cm~12cm；When hollow, internal aperture
Less than or equal to 0.6cm.
Preferably, the chopped glass fiber is 15% relative to the weight ratio of the PTFE；The boron nitride is relative to described
The weight ratio of PTFE is 5%；The toner is 0.4% relative to the weight ratio of the PTFE.
A kind of processing method of polytetrafluoroethylene material based on corona-resistant of the present invention of the invention, including
Step:
S1: PTFE particle and the chopped glass fiber are dried；
S2: by boron nitride, it is dry after the PTFE particle and the chopped glass fiber mix, obtain the first mixture；
S3: mixed aid and the toner are mixed, and obtain the second mixture；
S4: second mixture is added in first mixture, and third mixture is obtained after stirring；
S5: simultaneously compression moulding in mold is added in the third mixture.
Preferably, in the S1 step:
The PTFE particle and the chopped glass fiber are placed under 120 DEG C of vacuum environment and are dried, drying time is big
In equal to 5 hours；
Or forced air drying is carried out under 80 DEG C of environment temperature to the chopped glass fiber, it is small that drying time is more than or equal to 10
When.
Preferably, the mixed aid uses naphtha.
The present invention due to use above technical scheme, make it have it is following the utility model has the advantages that
By the use of chopped glass fiber, the bending stress and drawing of the polytetrafluoroethylene material entirety of corona-resistant are improved
Stress is stretched, has been effectively coped in the bending stress and actual condition that long connection conductor generates, bank electricity connector may be by tide
Influence the problem of axial tensile stress generated influences.Meanwhile the use of chopped glass fiber and boron nitride, lower dielectric can be provided
Constant reduces the partial pressure in gap, improves the firing potential in gap, and improved thermal conductivity reduces bubble-discharge and leads
The local temperature of cause increases problem.And the thermal conductivity due to improving insulating materials, to improve the barotolerance of material
And the stability in shelf depreciation environment, to improve the service life and reliability of material entirety.It mixes colours for product
Toner the toning of panchromatic system may be implemented, and toner is free of metal and metal oxide particle, to PTFE system after doping
Insulation performance do not generate any adverse effect.
Detailed description of the invention
Fig. 1 is a kind of flow chart of the processing method of the polytetrafluoroethylene material of corona-resistant of the embodiment of the present invention.
Specific embodiment
Below according to attached drawing 1, presently preferred embodiments of the present invention is provided, and is described in detail, makes to be better understood when this
Function, the feature of invention.
Referring to Fig. 1, a kind of polytetrafluoroethylene material of corona-resistant of the embodiment of the present invention, component include:
PTFE, chopped glass fiber, boron nitride and toner；Chopped glass fiber is 5%~30% relative to the weight ratio of PTFE；Boron nitride relative to
The weight ratio of PTFE is 1%~7%；Toner is 0.1%~1% relative to the weight ratio of PTFE.
For example, it can be 5%, 11%, 22% or 30% that chopped glass fiber is relative to the weight ratio of PTFE；Boron nitride relative to
The weight ratio of PTFE can be 1%, 2%, 5% or 7%；Toner can be 0.1%, 0.3%, 0.6% relative to the weight ratio of PTFE
Or 1%.
Wherein the effect of chopped glass fiber mainly increases the mechanical strength and mach dimensional stability of insulator, nitrogen
The effect for changing boron can dissipate to the electronics of gap discharge formation, generate the effect of anti-corona, while resistance to enhancing PTFE
Ablation property and reduction relative dielectric constant have positive acting.
By the use of chopped glass fiber, the bending stress and drawing of the polytetrafluoroethylene material entirety of corona-resistant are improved
Stress is stretched, has been effectively coped in the bending stress and actual condition that long connection conductor generates, bank electricity connector may be by tide
Influence the problem of axial tensile stress generated influences.
Meanwhile the use of chopped glass fiber and boron nitride, lower dielectric constant can be provided, power frequency and surge voltage are reduced
Under air gap partial pressure, improve the firing potential of air gap, improved thermal conductivity reduces part temperature caused by bubble-discharge
Spend raising problem.And the thermal conductivity due to improving insulating materials, to improve the barotolerance of material and be put locally
Stability in electrical environment, to improve the service life and reliability of material entirety.
In the present embodiment, the bulk density of PTFE is 300g/l~450g/l；PTFE is relative to the relative density of water
2.13~2.19.
The water content of PTFE is less than 0.04%；The average diameter of the particle of PTFE is 30~70um.
Chopped glass fiber uses diameter for the E of 11um grade chopped glass fiber.
The purity of boron nitride is greater than 99.95%；The particle diameter of boron nitride is 5~10um；The tensile strength of boron nitride is big
In 27MPa；The elongation at break of boron nitride is 300%；The shore hardness of boron nitride is 60~65；Phase of the boron nitride relative to water
It is 2.13~2.24 to density.
A kind of polytetrafluoroethylene material of corona-resistant of the embodiment of the present invention, be in stick, length be 30cm~
100cm, diameter are 3cm~12cm；When hollow, internal aperture is less than or equal to 0.6cm.
For example, it is 15% that chopped glass fiber, which can be used, relative to the weight ratio of PTFE；Weight ratio of the boron nitride relative to PTFE
It is 5%；The proportion that toner is 0.4% relative to the weight ratio of PTFE, by test according to the corona-resistant of this proportion preparation
Polytetrafluoroethylene material compared to existing filler have better resistance to pressure, corrosion resistance, high pressure resistant and maximum stress in bend；
And it can overcome the problems, such as that common PTFE material use condition in bank electricity system actual condition is not up to standard；And have when using this proportion
There is optimal material property, using the proportion as optimum proportioning.
In addition, the toning of panchromatic system may be implemented in the toner for product toning, and toner is free of metal and metal oxygen
Compound particle does not generate any adverse effect to the insulation performance of PTFE system after doping.
A kind of polytetrafluoroethylene material of corona-resistant of the embodiment of the present invention is applicable to high voltage shore power field；And it can
To realize the toning of panchromatic system.It is rodlike or heavy wall tubular material after material molding, using the height of the material machine-shaping
Pressure bank electricity connector can use maximum operating temperature up to 175 degree Celsius；Per day humidity is not less than 90%；Material processing can
Using etc. be sintered molding by the way of static pressure/molding, and after molding semi product is cooled sufficiently, may be machined place
Reason, but product minimum wall thickness (MINI W.) should guarantee the dimensional stability of processed goods not less than 2.5mm.
A kind of processing method of polytetrafluoroethylene material based on corona-resistant of the invention of the invention, including step
It is rapid:
S1: PTFE particle and chopped glass fiber are dried；
Wherein: PTFE particle and chopped glass fiber are placed under 120 DEG C of vacuum environment and are dried, drying time be greater than etc.
In 5 hours；
Or forced air drying is carried out under 80 DEG C of environment temperature to chopped glass fiber, drying time is more than or equal to 10 hours.
S2: by boron nitride, it is dry after PTFE particle and chopped glass fiber mix, obtain the first mixture；
S3: mixed aid and toner are mixed, and obtain the second mixture；
S4: the second mixture being added in the first mixture, is sufficiently stirred in blender, and it is mixed that third is obtained after stirring
Close material；In the present embodiment, mixed aid uses naphtha；
S5: simultaneously compression moulding in mold is added in third mixture, specifically, the third mixture mixed can be encapsulated
In elastic mould, mold is semifixed, and by piston seal above and below mold, liquid medium is injected into high pressure cylinder and added by pressure pump
It presses between rubber, makes third mixture by molded pressure transmitting by liquid and pressurization rubber.In other embodiments,
Three mixtures can cooperate preset die compression moulding by any existing pressing process.For example, being sieved to third mixture
Afterwards, a first pressing can be first passed through, then into excessively secondary compacting, then is sintered, after being detected to agglomerated material, can finally be carried out
Machining.
The present invention has been described in detail with reference to the accompanying drawings, those skilled in the art can be according to upper
It states and bright many variations example is made to the present invention.Thus, certain details in embodiment should not constitute limitation of the invention, this
Invention will be using the range that the appended claims define as protection scope of the present invention.
Claims (10)
1. a kind of polytetrafluoroethylene material of corona-resistant, which is characterized in that its component includes: PTFE, chopped glass fiber, nitridation
Boron and toner；The chopped glass fiber is 5%~30% relative to the weight ratio of the PTFE；The boron nitride is relative to described
The weight ratio of PTFE is 1%~7%；The toner is 0.1%~1% relative to the weight ratio of the PTFE.
2. the polytetrafluoroethylene material of corona-resistant according to claim 1, which is characterized in that the volume of the PTFE
Density is 300g/l~450g/l；The PTFE is 2.13~2.19 relative to the relative density of water.
3. the polytetrafluoroethylene material of corona-resistant according to claim 2, which is characterized in that the PTFE's is aqueous
Amount is less than 0.04%；The average diameter of the particle of the PTFE is 30~70um.
4. the polytetrafluoroethylene material of corona-resistant according to claim 3, which is characterized in that the chopped glass fiber is adopted
The E grade chopped glass fiber for being 11um with diameter.
5. the polytetrafluoroethylene material of corona-resistant according to claim 4, which is characterized in that the boron nitride it is pure
Degree is greater than 99.95%；The particle diameter of the boron nitride is 5~10um；The tensile strength of the boron nitride is greater than 27MPa；Institute
The elongation at break for stating boron nitride is 300%；The shore hardness of the boron nitride is 60~65；The boron nitride is relative to water
Relative density is 2.13~2.24.
6. the polytetrafluoroethylene material of corona-resistant according to claim 5, which is characterized in that it is in stick, length
For 30cm~100cm, diameter is 3cm~12cm；When hollow, internal aperture is less than or equal to 0.6cm.
7. the polytetrafluoroethylene material of corona-resistant according to claim 6, which is characterized in that the chopped glass fiber phase
Weight ratio for the PTFE is 15%；The boron nitride is 5% relative to the weight ratio of the PTFE；The toner is opposite
In the PTFE weight ratio be 0.4%.
8. a kind of processing method of the polytetrafluoroethylene material based on the described in any item corona-resistants of claim 1~7, packet
Include step:
S1: PTFE particle and the chopped glass fiber are dried；
S2: by boron nitride, it is dry after the PTFE particle and the chopped glass fiber mix, obtain the first mixture；
S3: mixed aid and the toner are mixed, and obtain the second mixture；
S4: second mixture is added in first mixture, and third mixture is obtained after stirring；
S5: simultaneously compression moulding in mold is added in the third mixture.
9. processing method according to claim 8, which is characterized in that in the S1 step:
The PTFE particle and the chopped glass fiber are placed under 120 DEG C of vacuum environment and are dried, drying time be greater than etc.
In 5 hours；
Or forced air drying is carried out under 80 DEG C of environment temperature to the chopped glass fiber, drying time is more than or equal to 10 hours.
10. processing method according to claim 9, which is characterized in that the mixed aid uses naphtha.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810857387.0A CN109251447A (en) | 2018-07-31 | 2018-07-31 | The polytetrafluoroethylene material and its processing method of corona-resistant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810857387.0A CN109251447A (en) | 2018-07-31 | 2018-07-31 | The polytetrafluoroethylene material and its processing method of corona-resistant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109251447A true CN109251447A (en) | 2019-01-22 |
Family
ID=65049157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810857387.0A Pending CN109251447A (en) | 2018-07-31 | 2018-07-31 | The polytetrafluoroethylene material and its processing method of corona-resistant |
Country Status (1)
| Country | Link |
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| CN (1) | CN109251447A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114957869A (en) * | 2022-07-29 | 2022-08-30 | 山东永聚医药科技有限公司 | Silicone oil-free polymer prefilled syringe and preparation process thereof |
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|---|---|---|---|---|
| US20020142161A1 (en) * | 1999-12-10 | 2002-10-03 | Cynthia Grimes | Magnet wire having enamel with a boron nitride filler |
| CN103081030A (en) * | 2010-07-02 | 2013-05-01 | 三品高性能塑料制品控股公司 | PTFE material having an anti-corona effect |
| CN105086301A (en) * | 2015-07-30 | 2015-11-25 | 洪小月 | High-thermal-conductivity PTFE pipe for thermal power heat exchanger |
| CN105811143A (en) * | 2014-12-29 | 2016-07-27 | 上海翔洲电气科技有限公司 | Mining explosion-proof type high voltage cable connector |
-
2018
- 2018-07-31 CN CN201810857387.0A patent/CN109251447A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020142161A1 (en) * | 1999-12-10 | 2002-10-03 | Cynthia Grimes | Magnet wire having enamel with a boron nitride filler |
| CN103081030A (en) * | 2010-07-02 | 2013-05-01 | 三品高性能塑料制品控股公司 | PTFE material having an anti-corona effect |
| CN105811143A (en) * | 2014-12-29 | 2016-07-27 | 上海翔洲电气科技有限公司 | Mining explosion-proof type high voltage cable connector |
| CN105086301A (en) * | 2015-07-30 | 2015-11-25 | 洪小月 | High-thermal-conductivity PTFE pipe for thermal power heat exchanger |
Non-Patent Citations (1)
| Title |
|---|
| 陈卓等: "基于C02连续激光器模拟的氮化物填充聚四氟乙烯复合材料耐烧蚀性能", 《复合材料学报》 * |
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| CN114957869A (en) * | 2022-07-29 | 2022-08-30 | 山东永聚医药科技有限公司 | Silicone oil-free polymer prefilled syringe and preparation process thereof |
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