CN105017695A - Nano-modified polytetrafluoroethylene composite material, arc-quenching nozzle and preparation method thereof, and high voltage circuit breaker - Google Patents
Nano-modified polytetrafluoroethylene composite material, arc-quenching nozzle and preparation method thereof, and high voltage circuit breaker Download PDFInfo
- Publication number
- CN105017695A CN105017695A CN201510375759.2A CN201510375759A CN105017695A CN 105017695 A CN105017695 A CN 105017695A CN 201510375759 A CN201510375759 A CN 201510375759A CN 105017695 A CN105017695 A CN 105017695A
- Authority
- CN
- China
- Prior art keywords
- boron nitride
- quenching nozzle
- arc
- nano
- preparation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Circuit Breakers (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a nano-modified polytetrafluoroethylene composite material, an arc-quenching nozzle and a preparation method thereof, and a high voltage circuit breaker. The nano-modified polytetrafluoroethylene composite material is composed of the following components by weight percentage: 1-3% of nano-boron nitride, 3%-10% of micron-boron nitride, and the balance polytetrafluoroethylene. The arc-quenching nozzle can adopt the nano-modified polytetrafluoroethylene composite material. The arc-quenching nozzle provided by the invention employs compounding of nano-boron nitride, micron-boron nitride and is filled with polytetrafluoroethylene, the filling ratio is adjusted reasonably, the mechanical performance of the nozzle material is improved, the toughness and anti-cracking ability of the material are enhanced, also the thermal conductivity of the nozzle material is improved, and the arc ablation resistance of the material is enhanced. The high voltage circuit breaker employing the arc-quenching nozzle provided by the invention can enhance the breaking performance of the breaker, thereby improving the operation stability of the high voltage circuit breaker.
Description
Technical field
The invention belongs to primary cut-out technical field, be specifically related to a kind of nano modification ptfe composite, relate to a kind of quenching nozzle and preparation method thereof simultaneously, and use the primary cut-out of this quenching nozzle.
Background technology
High pressure SF
6isolating switch is as power equipment important in power system, and at present towards high-voltage, jumbo future development, providing, the requirement in electric power energy stability and serviceability is also more and more higher.SF
6the spout of arc-extinguishing chamber of circuit breaker, plays control action kou to the flowing of arc blow-out gas in interrupting process, and it directly to affect in interrupting process SF in spout
6the recovery characteristics of gaseous media intensity and arc extinguishing ability.When isolating switch cut-offs short-circuit current, the spout of high-speed motion is made together with moving contact, subject the reactive force of pressurized gas in the ablation of the high-temperature electric arc of more than 4000K and compressor cylinder, very easily there is ablated surface and internal breakup, even can cause the fracture of spout, therefore, the mechanical property of vent material and ablation resistance directly affect connecting-disconnecting function and the work-ing life of primary cut-out.
At present, vent material many employings polytetrafluoroethylmaterial material.Tetrafluoroethylene (PTFE) has splendid electrical insulation properties and high temperature resistant, arc resistance energy, there is excellent thermostability, higher light reflective, outstanding unreactiveness, remarkable physical and mechanical properties and good weathering resistance simultaneously, be widely used in electrical equipment and high, medium and lowly compress switch, as insulating material, nozzle of circuit breaker (nozzle), rim strip, brake hoop, lining etc.But namely polytetrafluoroethylmaterial material starts remarkable decomposition occurs more than 400 DEG C, and arc temperature can reach more than 4000K in primary cut-out interrupting process, when pure PTFE material is used as quenching nozzle, due to the random absorption to arc energy, can there is significant Surface disintegration and serious internal rupture in pure PTFE material.Therefore, in the process that spout makes, usually in PTFE material, add some inorganic powder materials make composite shape matl as filler, become energy absorption center, thus the absorption of specification arc energy, reducing the random decomposition of spout and break, to strengthening the ablation resistance of spout, extending the work-ing life of spout.
In prior art, the composite shape matl of Inorganic Fillers Filled is adopted to mainly contain aluminium sesquioxide filled polytetrafluoroethylene matrix material, molybdenum disulfide-filled ptfe composite and boron nitride filled polytetrafluoroethylene matrix material, molybdenumdisulphide and aluminium sesquioxide filled polytetrafluoroethylene matrix material have good mechanical property, but its arc ablation resistance performance is slightly poor; The mechanical property, particularly tensile strength of boron nitride (being generally a micron boron nitride) filled polytetrafluoroethylene matrix material then will be starkly lower than molybdenumdisulphide and aluminium sesquioxide formula.
The spout of high voltage withstanding, the high current arc ablation that patent CN102731943B discloses that molybdenumdisulphide-boron nitride-tetrafluoroethylene three kinds Material cladding makes, its mass percent consists of: (1 ~ 10 μm) boron nitride 1 ~ 8%, (1 ~ 10 μm) molybdenumdisulphide is 0.1 ~ 0.4%, and surplus is tetrafluoroethylene.In primary cut-out today towards high-voltage, Large Copacity development, this matrix material spout still also exists the problem of toughness and cracking resistance ability, arc ablation resistance performance deficiency.
Summary of the invention
The invention provides a kind of nano modification ptfe composite, a kind of quenching nozzle using above-mentioned nano modification ptfe composite is provided simultaneously, solve existing matrix material spout toughness and cracking resistance ability, the problem of arc ablation resistance performance deficiency.
The present invention provides a kind of preparation method of above-mentioned quenching nozzle in addition.
The present invention also provides a kind of primary cut-out using above-mentioned quenching nozzle.
In order to realize above object, the technical solution adopted in the present invention is: a kind of nano modification ptfe composite, is made up of the component of following weight percent: nm-class boron nitride 1 ~ 3%, micron boron nitride 3 ~ 10%, and surplus is tetrafluoroethylene.
Preferably, above-mentioned nano modification ptfe composite is made up of the component of following weight percent: nm-class boron nitride 1 ~ 3%, micron boron nitride 5 ~ 10%, and surplus is tetrafluoroethylene.The weight percent of above-mentioned nano modification ptfe composite forms more preferably: nm-class boron nitride 2 ~ 3%, micron boron nitride 8 ~ 10%, surplus is tetrafluoroethylene.
Quenching nozzle provided by the invention uses above-mentioned nano modification ptfe composite.
Nm-class boron nitride is commercially available convenient source, hexagonal structure, and the similar graphite laminate structure of crystalline structure, has splendid dry lubrication ability, thermostability and chemical stability good, thermal expansivity is low, and excellent thermal conductivity under high temperature.
Adopt the quenching nozzle of nano modification ptfe composite of the present invention, nm-class boron nitride and micron boron nitride easy blending dispersion in the composite on the one hand, matrix material is made to have good homogeneity, by rational allocation filling proportion on the other hand, the mechanical property of nm-class boron nitride component to polytetrafluoroethylmaterial material plays strengthening action, can promote tensile strength and the elongation at break of matrix material; Nm-class boron nitride and micron boron nitride can act synergistically in the composite, improve the thermal conductivity of vent material further, thus in isolating switch interrupting process the energy of quick transferred arc, reduce electric arc to the ablation effect of spout.
The preparation method of above-mentioned quenching nozzle provided by the invention, comprise get formula ratio teflon resin powder, nm-class boron nitride powder, micron boron nitride powder mixing after, carry out mold pressing, sintering, to obtain final product.
The particle diameter of described nm-class boron nitride powder is 200 ~ 300nm.
The particle diameter of described teflon resin powder is 45 ~ 80 μm.The particle diameter of micron boron nitride powder is 5 ~ 10 μm.
Described mixing refers in homogenizer with 400 ~ 600r/min rotating speed stirring, 10 ~ 30min.
The pressure of described mold pressing is 20 ~ 30MPa, and the dwell time is 20 ~ 35min.
The temperature of described sintering is 330 ~ 370 DEG C, and sintering time is 48 ~ 60h.
The invention provides a kind of primary cut-out using above-mentioned quenching nozzle.Primary cut-out, such as open wide the isolating switch etc. of isolating switch, potting breaker, all-metal switchgear, the spout of arc suppressing transformer adopts nano modification ptfe composite provided by the invention, and miscellaneous part such as operating mechanism, transmission rig, the contact etc. of primary cut-out can adopt known technology.Because quenching nozzle thermal conductivity provided by the invention is high, arc ablation resistance performance obtains very big improvement, improves the break performance of isolating switch, thus improves the operation stability of primary cut-out.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment 1 quenching nozzle;
Fig. 2 is the structural representation of the primary cut-out using embodiment 1 quenching nozzle.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated.
Embodiment 1
The nano modification ptfe composite of the present embodiment, is made up of the component of following weight percent: nm-class boron nitride 1%, micron boron nitride 10%, and surplus is tetrafluoroethylene.
The quenching nozzle of the present embodiment adopts above-mentioned nano modification ptfe composite, and as shown in Figure 1,1 is the throat of spout to its structure, and the interrupting process of primary cut-out completes at spout internal, forms ablation to the throat of spout.
The preparation method of the quenching nozzle of the present embodiment, comprises the following steps:
1) teflon resin powder is got, carry out breaing up, levigate process, after the micron boron nitride powder that the teflon resin powder, the particle diameter that are 45 μm by particle diameter according to formula are the nm-class boron nitride powder of 200nm, particle diameter is 10 μm tentatively mixes, be placed in high speed mixer to carry out end mixed (rotating speed is 500r/min, time is 20min), obtain compound;
2) by step 1) gained compound adds in mould and carries out compression molding, and the pressure of mold pressing is 20MPa, and the demoulding after pressurize 20min, obtains work in-process;
3) by step 2) gained work in-process sinter 60h at 330 DEG C of temperature, to obtain final product.
The primary cut-out of the present embodiment adopts the quenching nozzle of the present embodiment, its structure as shown in Figure 2, comprise quiet main contact 1, static arc contact 2, spout 4, dynamic main contact 5, moving arcing contact 6, air cylinder 7 and displacer 9, spout 4, dynamic main contact 5, moving arcing contact 6 and air cylinder 7 are solidly installed; During separating brake, air cylinder 7 moves along direction of motion 10, and static arc contact 2 and moving arcing contact 6 separately, produce electric arc 3, the SF in air cylinder 7 between contact
6after gas 8 is compressed, spray at a high speed spout 4 inner, thus extinguish arcs 3.
Embodiment 2-7
The nano modification ptfe composite of embodiment 2-7, the weight percent of each component is as shown in table 1.
The weight percent of each component of table 1 embodiment 2-7 nano modification ptfe composite
Use the quenching nozzle structure of embodiment 2-7 nano modification ptfe composite identical with embodiment 1.
Each component proportion shown in quenching nozzle employing table 1 of embodiment 2-7 is prepared from by mixing, mold pressing, sintering.The particle diameter of raw material and mixing, mold pressing, agglutinating test condition are in table 2.
The preparation process condition of table 2 embodiment 2 ~ 7 quenching nozzle
Use the structure of the primary cut-out of quenching nozzle described in embodiment 2 ~ 7 identical with embodiment 1.
Experimental example
The performance of this experimental example to embodiment 1 ~ 7 gained quenching nozzle detects, and result is as shown in table 2.Described ablation resistance test conditions is: volts DS 600 volts, galvanic current 5 amperes.Wherein, the quenching nozzle base material of comparative example 1 is teflon resin, and filler is aluminum oxide, and filling quality per-cent is 10%.The quenching nozzle base material of comparative example 2 is teflon resin, and filler is molybdenumdisulphide, and filling quality per-cent is 2%.The quenching nozzle base material of comparative example 3 is teflon resin, and filler is the boron nitride of 1 ~ 10 μm, and filling quality per-cent is 7%.The specification of comparative example 1 ~ 3 quenching nozzle is identical with embodiment 1 ~ 7, and in preparation method, each processing condition are identical with embodiment 6.
The performance test results of table 3 embodiment 1 ~ 7 and comparative example quenching nozzle
From the test-results of table 3, quenching nozzle provided by the invention comparatively comparative example, improves the mechanical property of vent material, improves toughness and the cracking resistance ability of material, improves the thermal conductivity of vent material simultaneously, improve the arc ablation resistance performance of material; Adopt the primary cut-out of quenching nozzle of the present invention can promote the break performance of isolating switch, thus improve the operation stability of primary cut-out.
Claims (10)
1. a nano modification ptfe composite, is characterized in that: be made up of the component of following weight percent: nm-class boron nitride 1 ~ 3%, micron boron nitride 3 ~ 10%, and surplus is tetrafluoroethylene.
2. nano modification ptfe composite according to claim 1, it is characterized in that: be made up of the component of following weight percent: nm-class boron nitride 1 ~ 3%, micron boron nitride is 5 ~ 10%, surplus is tetrafluoroethylene.
3. nano modification ptfe composite according to claim 2, is characterized in that: be made up of the component of following weight percent: nm-class boron nitride is 2 ~ 3%, and micron boron nitride is 8 ~ 10%, and surplus is tetrafluoroethylene.
4. one kind uses the quenching nozzle of nano modification ptfe composite described in claim 1.
5. a preparation method for quenching nozzle as claimed in claim 4, is characterized in that: after getting the teflon resin powder of formula ratio, nm-class boron nitride powder, the mixing of micron boron nitride powder, carry out mold pressing, sintering, to obtain final product.
6. the preparation method of quenching nozzle according to claim 5, is characterized in that: the particle diameter of nm-class boron nitride powder is 200 ~ 300nm.
7. the preparation method of quenching nozzle according to claim 5, is characterized in that: the particle diameter of micron boron nitride powder is 5 ~ 10 μm.
8. the preparation method of quenching nozzle according to claim 5, is characterized in that: the pressure of described mold pressing is 20 ~ 30MPa, and the dwell time is 20 ~ 35min.
9. the preparation method of quenching nozzle according to claim 5, is characterized in that: the temperature of described sintering is 330 ~ 370 DEG C, and sintering time is 48 ~ 60h.
10. one kind uses the primary cut-out of quenching nozzle described in claim 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510375759.2A CN105017695B (en) | 2015-06-29 | 2015-06-29 | A kind of nano modification ptfe composite, quenching nozzle and preparation method thereof, primary cut-out |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510375759.2A CN105017695B (en) | 2015-06-29 | 2015-06-29 | A kind of nano modification ptfe composite, quenching nozzle and preparation method thereof, primary cut-out |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105017695A true CN105017695A (en) | 2015-11-04 |
| CN105017695B CN105017695B (en) | 2017-05-31 |
Family
ID=54408022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510375759.2A Active CN105017695B (en) | 2015-06-29 | 2015-06-29 | A kind of nano modification ptfe composite, quenching nozzle and preparation method thereof, primary cut-out |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105017695B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111040346A (en) * | 2019-12-20 | 2020-04-21 | 佛山科学技术学院 | Anti-radiation polytetrafluoroethylene composite material and preparation method thereof |
| CN111718550A (en) * | 2020-08-06 | 2020-09-29 | 云南电网有限责任公司电力科学研究院 | Preparation method of high-voltage circuit breaker nozzle material and high-voltage circuit breaker |
| CN112266561A (en) * | 2020-10-23 | 2021-01-26 | 西安交通大学 | Polytetrafluoroethylene composite material with high alternating-current breakdown field strength and preparation method and application thereof |
| CN112300520A (en) * | 2020-10-23 | 2021-02-02 | 西安交通大学 | Polytetrafluoroethylene composite material with arc ablation resistance and preparation method and application thereof |
| CN114456619A (en) * | 2022-02-21 | 2022-05-10 | 复旦大学 | Self-modifying boron nitride heat-conducting filler and preparation method thereof |
| CN115216099A (en) * | 2022-08-30 | 2022-10-21 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Polytetrafluoroethylene composite material, arc extinguishing nozzle and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4791256A (en) * | 1986-11-07 | 1988-12-13 | Mitsubishi Denki Kabushiki Kaisha | Insulated nozzle for use in an interrupter |
| CN102731943A (en) * | 2012-06-29 | 2012-10-17 | 中国西电电气股份有限公司 | SF6 high-voltage circuit breaker polytetrafluoroethylene composite material nozzle and preparation method thereof |
| CN104387709A (en) * | 2014-10-24 | 2015-03-04 | 河南平高电气股份有限公司 | Arc extinction nozzle for high-voltage breaker and preparation method thereof |
-
2015
- 2015-06-29 CN CN201510375759.2A patent/CN105017695B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4791256A (en) * | 1986-11-07 | 1988-12-13 | Mitsubishi Denki Kabushiki Kaisha | Insulated nozzle for use in an interrupter |
| CN102731943A (en) * | 2012-06-29 | 2012-10-17 | 中国西电电气股份有限公司 | SF6 high-voltage circuit breaker polytetrafluoroethylene composite material nozzle and preparation method thereof |
| CN104387709A (en) * | 2014-10-24 | 2015-03-04 | 河南平高电气股份有限公司 | Arc extinction nozzle for high-voltage breaker and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 陈卓等: "基于CO2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》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111040346A (en) * | 2019-12-20 | 2020-04-21 | 佛山科学技术学院 | Anti-radiation polytetrafluoroethylene composite material and preparation method thereof |
| CN111718550A (en) * | 2020-08-06 | 2020-09-29 | 云南电网有限责任公司电力科学研究院 | Preparation method of high-voltage circuit breaker nozzle material and high-voltage circuit breaker |
| CN112266561A (en) * | 2020-10-23 | 2021-01-26 | 西安交通大学 | Polytetrafluoroethylene composite material with high alternating-current breakdown field strength and preparation method and application thereof |
| CN112300520A (en) * | 2020-10-23 | 2021-02-02 | 西安交通大学 | Polytetrafluoroethylene composite material with arc ablation resistance and preparation method and application thereof |
| CN114456619A (en) * | 2022-02-21 | 2022-05-10 | 复旦大学 | Self-modifying boron nitride heat-conducting filler and preparation method thereof |
| CN115216099A (en) * | 2022-08-30 | 2022-10-21 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Polytetrafluoroethylene composite material, arc extinguishing nozzle and preparation method and application thereof |
| CN115216099B (en) * | 2022-08-30 | 2024-03-22 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Polytetrafluoroethylene composite material, arc extinguishing nozzle, preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105017695B (en) | 2017-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105017695A (en) | Nano-modified polytetrafluoroethylene composite material, arc-quenching nozzle and preparation method thereof, and high voltage circuit breaker | |
| CA2900227C (en) | Arc-extinguishing insulation material molded product and gas circuit breaker including the same | |
| CN105001565B (en) | A kind of ptfe composite, quenching nozzle and preparation method thereof, primary cut-out | |
| US20090109604A1 (en) | Gas Insulated Switchgear and Gas Circuit Breaker | |
| CN102731943B (en) | SF6 high-voltage circuit breaker polytetrafluoroethylene composite material nozzle and preparation method thereof | |
| CN103606497A (en) | Arc extinction slurry for fuse protector | |
| CN104387709B (en) | Arc extinction nozzle for high-voltage breaker and preparation method thereof | |
| CN101650994B (en) | Suspension insulator | |
| CN107418146A (en) | Isolator material, insulator and preparation method | |
| CN103077786A (en) | Enhanced composite insulator umbrella skirt sheath | |
| JPH0472335B2 (en) | ||
| CN108711530B (en) | Functionally gradient arc extinguishing nozzle and preparation method thereof | |
| CN103854917B (en) | It is used for the fluoroplastics matrix composite material of arc extinguishing used in electronic installation | |
| JP6157896B2 (en) | Arc-resistant insulator, method for manufacturing arc-resistant insulator, and gas circuit breaker | |
| CN206401229U (en) | A kind of new 40.5kV SF 6 arc-extinguishing chamber of circuit breaker cylinder moving contact | |
| CN106497077B (en) | A kind of codope silicon rubber composite material for adapting to complicated electric field and preparation method thereof | |
| CN202855616U (en) | Thermoplastic material solid-sealed polar pole vacuum circuit breaker | |
| CN115216099B (en) | Polytetrafluoroethylene composite material, arc extinguishing nozzle, preparation method and application thereof | |
| CN111253755A (en) | High-mechanical-property insulating silicone rubber material and preparation method thereof | |
| JP7273700B2 (en) | Arc-resistant resin molding, nozzle for gas circuit breaker, gas circuit breaker, and method for producing arc-resistant resin molding | |
| Nie et al. | Effect of BN size on arc ablation characteristics of PTFE material | |
| JP3428203B2 (en) | Epoxy resin composition for sulfur hexafluoride gas insulation equipment | |
| CN106252154B (en) | Modified large-nozzle high-voltage switch SF6 circuit breaker | |
| WO2020044552A1 (en) | Arc resistant insulating molded body, nozzle for gas circuit breaker, and gas circuit breaker | |
| CN107043543A (en) | Non-linear silicon rubber composite material of CaCu 3 Ti 4 O doping and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |