CN107556578A - A kind of inductive type PTC overflow protecting elements - Google Patents
A kind of inductive type PTC overflow protecting elements Download PDFInfo
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- CN107556578A CN107556578A CN201710803141.0A CN201710803141A CN107556578A CN 107556578 A CN107556578 A CN 107556578A CN 201710803141 A CN201710803141 A CN 201710803141A CN 107556578 A CN107556578 A CN 107556578A
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- inductive type
- coupling agent
- soft magnetic
- magnetic powder
- protecting elements
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Abstract
The present invention discloses a kind of inductive type PTC overflow protecting elements, it is characterised in that is made up of polymer composite sandwich layer and the conducting metal paillon foil for being compound in sandwich layer two sides.Polymer composite sandwich layer includes polymer base material, conductive filler, soft magnetic powder filler and coupling agent.The soft magnetic powder filler of introducing plays counteracting peak current, suitably slows down the effect of PTC actuation times.When there is short time spikes electric current; inductive type PTC overflow protecting elements produce induction reactance and delay current change rate; play a part of stabilizing circuit and protection PTC chip; element can eliminate the influence of short time heavy current impact in the state of holding electric current is not reduced; when long-time current state; PTC chip excessively stream significantly rises resistance cut-out circuit, protection circuit.Furthermore it is possible to induction reactance value, and then the time response of regulating element are adjusted by soft magnetic powder content.
Description
Technical field
The present invention relates to a kind of inductive type PTC overflow protecting elements, the invention belongs to technical field of electronic materials.
Background technology
Polymer matrix PTC composite is made up of polymer of matrix addition conductive filler, has at a normal temperature relatively low
Resistance value, when high current flow through cause be rapidly heated when, its resistance can moment increase a number of orders of magnitude, make circuit be in open circuit
State.Therefore polymer matrix PTC composite is commonly used for resettable fuse, to reach the purpose of protection circuit element.
In actual applications, when occurring larger peak current impact in short-term in circuit repeatedly, PTC resistor performance can be tired bad
Change and even burn, bring unsafe factor.For the PTC chip of same recipe composition, if to increase the pressure-resistant resistance to stream of chip
Performance improves component resistance, it is necessary to increase thickness, and component size can be caused to increase or keep current value to reduce.In addition, at some
As electric system application environment in, need PTC-element deferred action in the case of failure stall high current, need also exist for increase chi
It is very little in favor of radiating to realize, be unfavorable for the miniaturization of element.
The content of the invention
In view of the shortcomings of the prior art, the present invention discloses a kind of inductive type PTC overflow protecting elements, it is characterised in that by
Inductive type polymer composite sandwich layer and the conducting metal paillon foil composition for being compound in sandwich layer two sides.Inductive type macromolecule is compound
Material sandwich layer includes polymer base material, conductive filler, soft magnetic powder filler and coupling agent.Polymer base material accounts for described polymer-based
The 40%-65% of composite volume fraction；Conductive filler and soft magnetic powder filler account for polymer-based composite volume integral altogether
Several 35%-60%, it is dispersed among described polymeric matrix, wherein conductive filler volume is not less than composite bodies
The 30% of fraction, soft magnetic powder filler are not less than the 5% of composite volume fraction；Coupling agent accounts for composite volume fraction
0-1%.
The polymeric matrix is insulating polymer material, including polyethylene, haloflex, oxidic polyethylene, polychlorostyrene
Ethene, hycar, acrylonitrile-butadiene-styrene copolymer, polystyrene, makrolon, polyamide,
It is polyethylene terephthalate, polybutylene terephthalate (PBT), polyphenylene oxide, polyphenylene sulfide, polyformaldehyde, phenolic resin, poly-
Tetrafluoroethene, tetrafluoraoethylene-hexafluoropropylene copolymer, poly- trifluoro-ethylene, polyvinyl fluoride, maleic anhydride grafted polyethylene, poly- third
Alkene, Kynoar, epoxy resin, ethylene-vinyl acetate copolymer, polymethyl methacrylate, ethylene-acrylic acid copolymer
In one kind or its mixture.
The conductive filler granule room-temperature conductivity ＞ 100Scm, particle diameter is between 0.05 micron to 100 microns, particle diameter length
Footpath ratio is less than 500, including metallic particles, metal carbide particles, metal boride particles, carbon black, chopped CNT, graphite
One kind or its combination in alkene.
The soft magnetic powder filler coercivity H is not more than 100A/m, including silicon steel, permalloy, Cu-Zn ferrites,
One kind in Ni-Zn ferrites, glassy metal, between 10 nanometers to 50 microns of particle diameter, particle diameter draw ratio is less than 100.
The coupling agent includes monoalkoxy type titanate coupling agent, monoalkoxy pyrophosphoric acid ester type coupling agent, chelating type
Titanate coupling agent, corrdination type titanate coupling agent, one kind in quaternary titanate coupling agent or its combination.
The advantage of the invention is that：Soft magnetic ferrite filler is introduced in traditional polymer matrix PTC material, plays counteracting point
Peak current, suitably slow down the effect of PTC actuation times.When there is short time spikes electric current, inductive type PTC overflow protecting elements
Produce induction reactance and delay current change rate, play a part of stabilizing circuit and protection PTC chip；When long-time current state
When, PTC chip excessively stream significantly rises resistance cut-out circuit, plays protection circuit.When current value recovers normal steady, PTC
Chip turns on again.Element can eliminate the influence of short time heavy current impact in the state of holding electric current is not reduced, and work as length
During time current state, PTC chip excessively stream significantly rises resistance cut-out circuit, protection circuit.Furthermore it is possible to pass through soft magnetic powder
Content adjusts induction reactance value, and then the time response of regulating element.
Present disclosure and feature have revealed that as above, but the present invention above described only briefly or pertains only to this
The specific part of invention, feature of the invention may be more more than what content disclosed herein was related to.Therefore, protection model of the invention
Content disclosed in embodiment should be not limited to by enclosing, and should be included in the combination of all the elements embodied in different piece, with
And various replacements and modification without departing substantially from the present invention, and covered by claims of the present invention.
Brief description of the drawings
Inductive type PTC overflow protecting element structural representations are made using the present invention in Fig. 1.1- conducting metal paillon foils；2- electricity
Sense type polymer composite sandwich layer.
Embodiment
Embodiment 1：
By high density polyethylene (HDPE) (HDPE), conductive filler carbon black and soft magnetic powder filler Cu-Zn ferrites by volume
65%: 30%: 5% dispensing.Inductive type PTC composite material is obtained through banburying batch mixing.By good conductive compound of above-mentioned melting mixing
Material is rolled by mill, obtains the inductive type PTC composite material sandwich layer that thickness is 0.30-0.40 millimeters.
By composite basic unit respectively by two layers of nickel foil is placed in as shown in Figure 1 between, by the method for hot pressing by they
It is closely linked.Then through punching process, the inductive type for 3mm*4mm conducing composite material chip being washed into shown in Fig. 1
PTC overflow protecting elements.
Embodiment 2：
By high density polyethylene (HDPE) (HDPE), conductive filler tungsten carbide and soft magnetic powder filler permalloy by volume 40%
: 45%: 15% dispensing, inductive type PTC composite material is obtained through banburying batch mixing.By the good conducing composite material of above-mentioned melting mixing
Rolled by mill, obtain the inductive type PTC composite material sandwich layer that thickness is 0.30-0.40 millimeters.
By composite basic unit respectively by two layers of nickel plating copper foil is placed in as shown in Figure 1 between, will by the method for hot pressing
They are closely linked.Then through punching process, conducing composite material chip is washed into 6mm*6mm inductive type PTC mistakes
Flow protection element.
Embodiment 3：
Polymer P VDF, conductive filler titanium diboride, soft magnetic powder filler Ni-Zn ferrites, titanate coupling agent are pressed
The dispensing of volume ratio 49%: 45%: 5%: 1%, inductive type PTC composite material is obtained through banburying batch mixing.Above-mentioned melting mixing is good
Composite rolled by mill, obtain thickness be 0.40-0.50 millimeters composite basic unit.
By composite basic unit respectively by two layers of nickel foil is placed in as shown in Figure 1 between, by the method for hot pressing by they
It is closely linked.Then through punching process, the inductive type PTC excessively streams that conducing composite material chip is washed into 5mm*8mm are protected
Protection element.
Embodiment 4：
By polymer nylon 1012, conductive filler titanium carbide, soft magnetic powder filler Ni-Zn ferrites, titanate coupling agent
60%: 39.5%: 5%: 0.5% dispensing by volume, inductive type PTC composite material is obtained through banburying batch mixing.By above-mentioned melting
The conducing composite material mixed is rolled by mill, obtains the composite basic unit that thickness is 0.50-0.55 millimeters.
By composite basic unit respectively by two layers of nickel plating copper foil is placed in as shown in Figure 1 between, will by the method for hot pressing
They are closely linked.Then through punching process, conducing composite material chip is washed into 5mm*8mm inductive type PTC mistakes
Flow protection element.
Embodiment 5：
By polymer poly carbonic ester, conductive filler titanium carbide, soft magnetic powder filler Cu-Zn ferrites by volume 55%:
30%: 15% dispensing, inductive type PTC composite material is obtained through banburying batch mixing.The good composite of above-mentioned melting mixing is passed through
Mill is rolled, and obtains the conducing composite material basic unit that thickness is 0.30-0.35 millimeters.
By composite basic unit respectively by two layers of nickel plating copper foil is placed in as shown in Figure 1 between, will by the method for hot pressing
They are closely linked.Then through punching process, conducing composite material chip is washed into Φ 7.5mm inductive type PTC mistakes
Flow protection element.
Claims (6)
1. a kind of inductive type PTC overflow protecting elements, it is characterised in that by inductive type polymer composite sandwich layer and compound
In sandwich layer two sides conducting metal paillon foil form, inductive type polymer composite sandwich layer include polymer base material, conductive filler,
Soft magnetic powder filler and coupling agent.Polymer base material accounts for 40% one the 65% of the polymer-based composite volume fraction；Lead
Electric filler and soft magnetic powder filler accounts for 35% one the 60% of polymer-based composite volume fraction altogether, is dispersed in described
Among polymeric matrix, wherein conductive filler volume is not less than the 30% of composite volume fraction, and soft magnetic powder filler is not low
In the 5% of composite volume fraction；Coupling agent accounts for composite volume fraction 0 one 1%.
2. a kind of inductive type PTC overflow protecting elements according to claim 1, it is characterised in that the polymeric matrix is
Insulating polymer material, including polyethylene, haloflex, oxidic polyethylene, polyvinyl chloride, hycar,
Acrylonitrile-butadiene-styrene copolymer, polystyrene, makrolon, polyamide, polyethylene terephthalate, poly- pair
Benzene dicarboxylic acid butanediol ester, polyphenylene oxide, polyphenylene sulfide, polyformaldehyde, phenolic resin, polytetrafluoroethylene (PTFE), hexafluoropropylene (HFP)/tetrafluoroethylene (TFE)
Copolymer, poly- trifluoro-ethylene, polyvinyl fluoride, maleic anhydride grafted polyethylene, polypropylene, Kynoar, epoxy resin, second
One kind or its mixture in alkene-acetate ethylene copolymer, polymethyl methacrylate, ethylene-acrylic acid copolymer.
A kind of 3. inductive type PTC overflow protecting elements according to claim 1, it is characterised in that the conductive filler granule
Room-temperature conductivity ＞ 100Scm, for particle diameter between 0.05 micron to 100 microns, particle diameter draw ratio is less than 500, including metal
Grain, metal carbide particles, metal boride particles, carbon black, the CNT that is chopped, one kind in graphene or its combination.
A kind of 4. inductive type PTC overflow protecting elements according to claim 1, it is characterised in that the soft magnetic powder filler
Coercivity H is not more than one in 100A/m, including silicon steel, permalloy, Cu-Zn ferrites, Ni-Zn ferrites, glassy metal
Kind, between 10 nanometers to 50 microns of particle diameter, particle diameter draw ratio is less than 100.
5. a kind of inductive type PTC overflow protecting elements according to claim 1, it is characterised in that the coupling agent includes single
Alcoxyl fundamental mode titanate coupling agent, monoalkoxy pyrophosphoric acid ester type coupling agent, chelating titanate coupling agent, corrdination type titanate esters
Coupling agent, one kind in quaternary titanate coupling agent or its combination.
A kind of 6. inductive type PTC overflow protecting elements according to claim 1, it is characterised in that two described metal foils
Piece contacts containing rough surface and directly, two metal foils compared with smooth surface, rough surface with the conducing composite material sandwich layer
The smooth surface of piece is serially connected with by protection circuit with the welding of conductive component respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710803141.0A CN107556578A (en) | 2017-09-08 | 2017-09-08 | A kind of inductive type PTC overflow protecting elements |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710803141.0A CN107556578A (en) | 2017-09-08 | 2017-09-08 | A kind of inductive type PTC overflow protecting elements |
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| Publication Number | Publication Date |
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| CN107556578A true CN107556578A (en) | 2018-01-09 |
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| CN201710803141.0A Withdrawn CN107556578A (en) | 2017-09-08 | 2017-09-08 | A kind of inductive type PTC overflow protecting elements |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111205086A (en) * | 2020-03-23 | 2020-05-29 | 辽宁斯宝达节能科技开发有限公司 | CNPTC high-magnetic heating technology |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020056215A (en) * | 2000-12-29 | 2002-07-10 | 유현식 | Conductive polymer resin having excellent positive temperature coefficient and method for preparing of the same |
| CN105869806A (en) * | 2016-05-19 | 2016-08-17 | 上海长园维安电子线路保护有限公司 | High-stability PTC (positive temperature coefficient) thermo-sensitive component |
-
2017
- 2017-09-08 CN CN201710803141.0A patent/CN107556578A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020056215A (en) * | 2000-12-29 | 2002-07-10 | 유현식 | Conductive polymer resin having excellent positive temperature coefficient and method for preparing of the same |
| CN105869806A (en) * | 2016-05-19 | 2016-08-17 | 上海长园维安电子线路保护有限公司 | High-stability PTC (positive temperature coefficient) thermo-sensitive component |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111205086A (en) * | 2020-03-23 | 2020-05-29 | 辽宁斯宝达节能科技开发有限公司 | CNPTC high-magnetic heating technology |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180109 |
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