CN104582961B - The preparation method of aromatic polyamides-polytetrafluoroethylene (PTFE) composite sheet, this sheet material and use the high-frequency device of this sheet material - Google Patents
The preparation method of aromatic polyamides-polytetrafluoroethylene (PTFE) composite sheet, this sheet material and use the high-frequency device of this sheet material Download PDFInfo
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- CN104582961B CN104582961B CN201380044089.5A CN201380044089A CN104582961B CN 104582961 B CN104582961 B CN 104582961B CN 201380044089 A CN201380044089 A CN 201380044089A CN 104582961 B CN104582961 B CN 104582961B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
- B32B27/322—Layered products comprising a layer of synthetic resin comprising polyolefins comprising halogenated polyolefins, e.g. PTFE
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0313—Organic insulating material
- H05K1/0353—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement
- H05K1/0366—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement reinforced, e.g. by fibres, fabrics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0246—Acrylic resin fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2305/00—Condition, form or state of the layers or laminate
- B32B2305/02—Cellular or porous
- B32B2305/026—Porous
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0137—Materials
- H05K2201/015—Fluoropolymer, e.g. polytetrafluoroethylene [PTFE]
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Laminated Bodies (AREA)
- Organic Insulating Materials (AREA)
- Paper (AREA)
- Reinforced Plastic Materials (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Insulating Bodies (AREA)
Abstract
The invention provides a kind of aromatic polyamides-polytetrafluoroethylene (PTFE) composite sheet, it is characterized in that, described sheet material to be formed by the sheet material containing aramid fibrid and aramid staple fiber and the polytetrafluoroethylene floor becoming stratiform in the direction, face of above-mentioned sheet material and through the aromatic polyamides-polytetrafluoroethylene (PTFE) composite sheet of calcination process, voidage is more than 30% and thickness is 150<i> below μ </i>m.
Description
Technical field
The present invention relates to the excellences such as mechanical property, electric insulating quality, dielectric property, liquid impregnation, be suitable as the novel aromatic polyamide-polytetrafluoroethylene (PTFE) composite sheet of the insulating element of the high-frequency device that at high temperature can use or carry out work.
Background technology
In the high-frequency device such as converter, printed board, mobile radio telecommunications of process high-frequency signal, in order to carry out the conversion of high-frequency signal, in insulating element, need the generation of dielectric loss (thermal losses) P be reduced by represented by following formula.Therefore, the insulating element of low-k and low-dielectric loss angle tangent is required.
Herein, E is voltage, tan
δfor the dielectric loss angle tangent of material, f is frequency,
ε 0for the dielectric constant of vacuum,
ε rfor the dielectric constant (dielectric constant) of material, S is the area of electrode, and d is electrode spacing.
On the other hand, in order to the conversion of high-frequency signal uses semiconductor, but the exploitation of the high temperature such as carborundum, gallium nitride operating power semiconductor is increasingly active in recent years, respectively according to the service condition etc. of semiconductor switch circuit, requires suitable variation characteristic or level etc.
But, in insulating element, fully may not tackle the high efficiency day by day of high-frequency device in recent years, high capacity and miniaturization (compact).
In the insulating element requiring the high-frequency device such as high efficiency and jumbo generator, motor, converter, transverter, printed board, need to meet following 4 kinds of characteristics simultaneously:
1) dielectric constant and dielectric loss angle tangent low (low-dielectric);
2) high proof voltage;
3) there is mechanical strength; And
4) fully impregnation automation lubricates the lubricant of wet goods.
Particularly think that under the state of high temperature, to meet above-mentioned 4 kinds of characteristics of crucial importance under the meaning of characteristic giving full play to the effective power semiconductor of hot operation.
Summary of the invention
The object of the invention is to: a kind of low dielectric insulation sheet material can being competent at the high efficiency high capacity of the high-frequency device that at high temperature can use or carry out work is provided.
The present inventor is in view of such situation, and conduct in-depth research to develop the low dielectric insulation sheet material of the high efficiency high capacity can being competent at high-frequency device, result reaches the present invention.
In the 1st embodiment, the invention provides a kind of aromatic polyamides-polytetrafluoroethylene (PTFE) composite sheet, it is characterized in that, described sheet material to be formed by the sheet material containing aramid fibrid and aramid staple fiber and the polytetrafluoroethylene floor becoming stratiform in the direction, face of above-mentioned sheet material and through the aromatic polyamides-polytetrafluoroethylene (PTFE) composite sheet of calcination process, voidage is more than 30% and thickness is 150
μbelow m.
In the 2nd embodiment, the invention provides the aromatic polyamides-polytetrafluoroethylene (PTFE) composite sheet described in the 1st embodiment, wherein, the dielectric constant of 200 DEG C and dielectric loss angle tangent show minimizing trend relative to the increase measuring frequency.
In the 3rd embodiment, the invention provides the 1st embodiment or the aromatic polyamides described in the 2nd embodiment-polytetrafluoroethylene (PTFE) composite sheet, wherein, the ratio of the dielectric constant of the ratio of the dielectric constant of 100 DEG C and the dielectric constant of 25 DEG C or the dielectric constant of 200 DEG C and 25 DEG C is 0.9 ~ 1.1.
In the 4th embodiment, the invention provides the preparation method of aromatic polyamides-polytetrafluoroethylene (PTFE) composite sheet described any one of 1st ~ 3 embodiments, it is characterized in that, to carry out after calendering processes, carrying out calcination process being copied the sheet material sheet material prepared by method for making being coated with polytetrafluoroethylene (PTFE) microparticle dispersion by wet type by aramid fibrid and aramid staple fiber.
In the 5th embodiment, the invention provides a kind of high-frequency device, it is characterized in that, use aromatic polyamides-polytetrafluoroethylene (PTFE) composite sheet described any one of 1st ~ 3 embodiments as insulating element.
In the 6th embodiment, the invention provides a kind of generator, it is characterized in that, use aromatic polyamides-polytetrafluoroethylene (PTFE) composite sheet described any one of 1st ~ 3 embodiments as insulating element.
In the 7th embodiment, the invention provides a kind of motor, it is characterized in that, use aromatic polyamides-polytetrafluoroethylene (PTFE) composite sheet described any one of 1st ~ 3 embodiments as insulating element.
In the 8th embodiment, the invention provides a kind of converter, it is characterized in that, use aromatic polyamides-polytetrafluoroethylene (PTFE) composite sheet described any one of 1st ~ 3 embodiments as insulating element.
In the 9th embodiment, the invention provides a kind of transverter, it is characterized in that, use aromatic polyamides-polytetrafluoroethylene (PTFE) composite sheet described any one of 1st ~ 3 embodiments as insulating element.
In the 10th embodiment, the invention provides a kind of printed board, it is characterized in that, use aromatic polyamides-polytetrafluoroethylene (PTFE) composite sheet described any one of 1st ~ 3 embodiments as insulating element.
Detailed description of the invention
(aromatic polyamides)
In the present invention, aromatic polyamides refers to that more than 60% of amido link is bonded directly to wire macromolecular compound (aromatic polyamides) on aromatic ring.As such aromatic polyamides, include, for example out poly and copolymer, PPTA and copolymer thereof, poly P phenylene diamine terephthalamide-3,4 '-diphenyl ether copolymer (Port リ (パ ラ Off ェ ニ レ Application)-コ Port リ (3,4 '-ジ Off ェ ニ ル エ ー テ Le) テ レ フ タ ー Le ア ミ De) etc.These aromatic polyamides are such as by using the known at present interfacial polymerization, solution polymerization process etc. of m-phthaloyl chloride and m-phenylene diamine (MPD) to carry out industry preparation, and can be used as commercially available product buys, but is not limited thereto.In these aromatic polyamides, possess the characteristics such as good molding processibility, heat adhesiveness, anti-flammability, heat resistance in preferably use poly.
(aramid fibrid)
In the present invention, aramid fibrid is the film-form aramid particles with copy paper, also referred to as aromatic polyamides paper pulp (with reference to Japanese Patent Publication 35-11851 publication, Japanese Patent Publication 37-5732 publication etc.).
As everyone knows, implementing dissociation, beating process and be used as copy paper raw material by identical with common wood pulp for aramid fibrid, so-called beating process can be implemented in order to keep being suitable for the quality of copy paper.This beating process by disk refiner, beater, other can bring the copy paper Feedstock treating machine of mechanicalness cutting action to implement.In this operation, the metamorphosis of fibrid can be monitored by the freeness test method (freeness) of Japanese Industrial Standards P8121 defined.In the present invention, the freeness of the aramid fibrid after beating process is implemented preferably at 10cm
3~ 300cm
3in the scope of (Canadian standard freeness (JISP8121)).Be greater than in the fibrid of this scope in freeness, have the possibility reduced by the intensity of its shaping thermal insulation electric insulation sheet material (many Hot Electricity mood exhausted Vela シ ー ト) material.On the other hand, if obtain being less than 10cm
3freeness, then the mechanokinetic utilization rate dropped into diminishes, and in addition, the situation that the treating capacity of time per unit tails off is many, in addition, owing to excessively carrying out the micronizing of fibrid, so easily cause the reduction of so-called binding agent function.Therefore, even if obtain like this comparing 10cm
3little freeness, also cannot find special advantage.
(aramid staple fiber)
Aramid staple fiber is the fiber will obtained using aromatic polyamides as the fibre cutting of material, as such fiber, include, for example out: can the fiber bought of the trade name such as " Teijinconex (テ イ ジ Application コ ー ネ ッ Network ス) (registration mark) " of Supreme Being people's (strain), " Nomex (ノ ー メ ッ Network ス) (registration mark) " of DuPont company (デ ュ ポン society), but be not limited thereto.
The length of aramid staple fiber can be selected in the scope from more than 1mm and lower than 50mm, preferably 2 ~ 10mm usually.If the length of short fiber is less than 1mm, then the mechanical characteristic of sheet material reduces, on the other hand, the short fiber of more than 50mm is easily produced " be wound around (か ら body) ", " knotting (Knot bundle) " etc. and easily causes defect when being prepared aramid paper by damp process.
(aramid sheets)
In the present invention, aramid sheets is the tablet formed primarily of above-mentioned aramid fibrid and aramid staple fiber, preferably has 30 ~ 180
μthickness in the scope of m.In addition, aramid sheets preferably has 10g/m
2~ 140g/m
2scope in, particularly 10g/m
2~ 70g/m
2scope in level ground amount (mass area ratio).Herein, the mixed proportion of aramid fibrid and aramid staple fiber can be set to arbitrary proportion, but preferably the ratio (mass ratio) of aramid fibrid/aramid staple fiber is set to 1/9 ~ 9/1, be more preferably 2/8 ~ 8/2, but be not limited thereto scope.
Aramid sheets is prepared by the method for carrying out sheet material after being mixed with aramid staple fiber by above-mentioned aramid fibrid usually.Specifically, such as can apply after above-mentioned aramid fibrid and aramid staple fiber are carried out dry type mixing utilizes air-flow to form the method for sheet material, aramid fibrid and aramid staple fiber are carried out disperseing to mix rear discharge to carry out sheet material, remove liquid and carry out dry method etc. on the support (such as net or band) of liquid permeability in liquid medium, but preferred choice for use water copies method for making as the so-called wet type of medium in these methods.
Copy in method for making in wet type, be generally following methods: by the water paste liquor charging of single or mixture at least containing aramid fibrid, aramid staple fiber to paper machine and after disperseing, carry out dewatering, water squeezing and drying process, batch as sheet material thus.As paper machine, fourdrinier paper machine, cylinder paper machine, apsacline paper machine can be utilized and they are carried out the compound paper machine etc. that combines.When the preparation carried out with compound paper machine, sizing material formings different for mixing proportion is sheet material and merges, the complex sheet material be made up of multiple layer can be obtained thus.The additives such as dispersed improver, defoamer, paper intensity reinforcing agent are used as required when copying processed.
(polytetrafluoroethylene (PTFE))
In the present invention, polytetrafluoroethylene (PTFE) is the copolymer of tetrafluoroethene, and the fluororesin (fluorocarbons resin) for being only made up of fluorine atom and carbon atom.In the present invention, as described below, preferred use polytetrafluoroethylene (PTFE) microparticle aqueous dispersions, as such aqueous dispersion, include, for example out: can DuPont-MitsuiFluorochemicalsCo., Ltd. " PTFE31-JR ", the DaikinIndustries of (Mitsui デ ュ Port Application Off ロ ロ ケ ミ カ Le (strain)), Ltd. the aqueous dispersion bought of the trade name such as " Ployflon (Port リ Off ロ Application) (registration mark) PTFED series " of (ダ イ キ Application (strain)), but be not limited thereto.
(aromatic polyamides-polytetrafluoroethylene (PTFE) composite sheet)
Aromatic polyamides of the present invention-polytetrafluoroethylene (PTFE) composite sheet is such as preferred will carry out carrying out calcination process after calendering is processed being copied the sheet material aramid sheets prepared by method for making being coated with polytetrafluoroethylene (PTFE) microparticle dispersion by wet type by aramid fibrid and aramid staple fiber.The thickness of the composite sheet before calendering processing is preferably 35 ~ 260
μm, but be not limited thereto.
As the method being coated with polytetrafluoroethylene (PTFE) microparticle dispersion on aramid sheets, unrestrictedly can use various known method, but preferred coating machine is coated with polytetrafluoroethylene (PTFE) microparticle dispersion on above-mentioned aramid sheets, the face direction of being formed in becomes the polytetrafluoroethylene floor of stratiform.Above-mentioned coating machine can be selected from metering bar coater, roll coater, reverse roll coater, gravure coater, knife type coater and Kohler coater.Also above-mentioned coating waste water can be carried out repeatedly in any order.
The aromatic polyamides obtained as mentioned above-polytetrafluoroethylene (PTFE) composite sheet, by implementing the what is called calendering processing carrying out hot pressing between a pair roller under HTHP, improves mechanical strength, controls voidage and thickness.Such as when using metal roll, the condition preferable temperature of hot pressing is 270 ~ 370 DEG C, line pressure is in the scope of 50 ~ 200kg/cm.Particularly preferably temperature is 280 ~ 330 DEG C, line pressure is in the scope of 60 ~ 120kg/cm.If temperature is lower than 270 DEG C, then intensity does not fully improve, if higher than 370 DEG C, then has composite sheet to be easily pasted on roller surface and the situation of breaking.Also above-mentioned calendering processing can be carried out repeatedly in any order.
As mentioned above through the composite sheet of calendering processing by high temperature carrying out calcination process and low dielectric, preparation can be competent at the low dielectric insulation sheet material of the high efficiency high capacity of the high-frequency device that at high temperature can use or carry out work.Calcination process in the present invention is preferably to implement the state that at least one side contacts with gas of composite sheet.When compressing to pressurize from two sides calandria, if become more than 370 DEG C, being then pasted on press body, being difficult to preparation.As concrete method, can list carry out heating by calcining furnace, in an oven, will the method etc. that contacts with heated roll of one side, but to be not limited thereto.In addition, in order to effectively and be prepared continuously, preferably after above-mentioned calendering processing, calcination process is carried out continuously.Calcining heat is preferably 370 ~ 410 DEG C, is more preferably 395 ~ 405 DEG C.If calcining heat becomes higher than 410 DEG C, then there is the possibility of aramid sheets deterioration.In addition, if calcining heat becomes lower than 370 DEG C, then the situation that the dielectric constant of composite sheet and dielectric loss angle tangent uprise is had.Preferred calcination time is more than 3 seconds and within 15 minutes, is particularly preferably more than 5 seconds and within 10 minutes, but is not limited thereto.If calcination time is short, then calcines and fully do not carry out, have the situation that dielectric constant and dielectric loss angle tangent uprise, if long, then produce the deterioration of sheet material, have the situation producing the problems such as mechanical strength reduction.In order to improve the impregnation of automation lubrication wet goods liquid, through the voidage preferably more than 30% of the composite sheet of calcination process.In addition, in order to the miniaturized lightweight of high-frequency device, thickness preferably 150
μbelow m.
Aromatic polyamides of the present invention-polytetrafluoroethylene (PTFE) composite sheet is preferably the dielectric constant of 200 DEG C and dielectric loss angle tangent relative to the increase measuring frequency and shows the composite sheet of minimizing trend.In addition, the ratio of the preferred dielectric constant of the ratio of the dielectric constant of 100 DEG C and the dielectric constant of 25 DEG C or the dielectric constant of 200 DEG C and 25 DEG C of aromatic polyamides of the present invention-polytetrafluoroethylene (PTFE) composite sheet is 0.9 ~ 1.1.
Aromatic polyamides of the present invention-polytetrafluoroethylene (PTFE) composite sheet can be suitable as the insulating element of the high-frequency devices such as generator, motor, converter, transverter, printed board.
Below, for the present invention, enumerate embodiment to be described.It should be noted that, these embodiments are used for citing so that content of the present invention to be described, and non-limiting content of the present invention.
Embodiment
(assay method)
(1) length weighted average fiber is long
Use OpTestEquipment Inc. FiberQualityAnalyzer, the length weighted average fiber measuring about 4000 particulates is long.
(2) mensuration of level ground amount, thickness
Implement according to JISC2300-2.
(3) calculating of density
Calculate with level ground amount ÷ thickness.
(4) calculating of voidage
The true specific gravity of aromatic polyamides, polytetrafluoroethylene (PTFE) is counted 1.38,2.17 respectively calculate.
(5) mensuration of hot strength
Tensilon cupping machine is used to implement with the draw speed of the spacing jig of the width of 15mm, 50mm, 50mm/ minute.
(6) dielectric constant, dielectric loss angle tangent
Implement according to JISK6911.
(7) breakdown voltage
According to ASTMD149, implement by using the direct boosting method of alternating current with the electrode diameter of 51mm.
(8) Gurley air permeability
Be used in the Gurley densometer specified in JISP8117, measure 100cc (0.1dm
3) air by with have external diameter be the circular hole of 28.6mm clamping plate compress samples of sheets (area is 642mm
2) time (second).
(embodiment 1 ~ 4)
(raw material preparation)
Use the paper pulp particle preparation facilities (wet type precipitation machine) formed with the combination of stator and rotor described in Japanese Laid-Open Patent Publication 52-15621 publication, prepare the fibrid of poly.Used dissociating machine, beating machine carried out processing thus be adjusted to 0.9mm by long for length weighted average fiber.The freeness of the aramid fibrid obtained is 90cm
3.
On the other hand, it is 6mm (being designated as below " aramid staple fiber ") that DuPont company (デ ュ ポン society) meta-aramid fiber processed (Nomex (ノ ー メ ッ Network ス) (registration mark), filament number was 2 dawn) is cut into length.
(preparation of aramid sheets)
The aramid fibrid of preparation and aramid staple fiber are carried out disperseing to prepare slurry respectively in water.Carry out these slurries to mix the mixing proportion (weight ratio) making fibrid and aramid staple fiber become 1/1, with the manual paper machine of beating formula, (sectional area is 625cm
2) prepare tablet, obtain thickness and be about 144
μthe aramid sheets of m.
(preparation of aromatic polyamides-polytetrafluoroethylene (PTFE) composite sheet)
Above-mentioned aramid sheets is coated with DuPont-MitsuiFluorochemicalsCo. with knife type coater, Ltd. (Mitsui デ ュ Port Application Off ロ ロ ケ ミ カ Le (strain)) " PTFE31-JR " (polytetrafluoroethylene (PTFE)) of making, in 120 DEG C with oven drying 1 hour.And then coating polytetrafluoroethylene (PTFE), in 120 DEG C with oven drying 1 hour.The thickness of composite sheet entirety is about 147
μm.After composite sheet being carried out calendering processing with the condition shown in table 1, by continuously one side being implemented calcination process with high temperature roll contact, obtain composite sheet.The key property value of the aromatic polyamides obtained like this-polytetrafluoroethylene (PTFE) composite sheet is illustrated in table 1,2.
Due to the dielectric constant of the aromatic polyamides-polytetrafluoroethylene (PTFE) composite sheet of embodiment and dielectric loss angle tangent all low, thickness is little, breakdown voltage, intensity, voidage, air permeability are also enough high, so useful as the insulation sheet material of the insulating element being used as high-frequency device.In addition, owing to showing along with frequency gets higher at 200 DEG C, the trend of dielectric constant and the further step-down of dielectric loss angle tangent, so as at high temperature can to use or to carry out the insulation sheet material of the such high-frequency device of the motor carrying out starting with high-frequency mode (such as high-frequency converter) of work particularly useful.
[table 1]
[table 2]
(comparative example 1 ~ 3)
(preparation of aromatic polyamides-polytetrafluoroethylene (PTFE) composite sheet)
On aramid sheets, be coated with DuPont-MitsuiFluorochemicalsCo. with knife type coater identically with embodiment, Ltd. (Mitsui デ ュ Port Application Off ロ ロ ケ ミ カ Le (strain)) make " PTFE31-JR ", in 120 DEG C with oven drying 1 hour.And then coating polytetrafluoroethylene (PTFE), in 120 DEG C with oven drying 1 hour.With the condition shown in table 3, composite sheet is carried out calendering processing, the extrusion process of hot pressing face, calcination process.The key property value of the aromatic polyamides obtained like this-polytetrafluoroethylene (PTFE) composite sheet is illustrated in table 3.
Because the dielectric loss angle tangent of the composite sheet of comparative example 1 and 2 is high, particularly the dielectric loss angle tangent of 60Hz and 1kHz of 25 DEG C and 100 DEG C is high, in addition, because the thickness of the composite sheet of comparative example 3 is large, intensity is also little, breakdown voltage is also low, so think the low dielectric insulation sheet material be not enough to as the high efficiency high capacity can being competent at high-frequency device.
[table 3]
Claims (10)
1. aromatic polyamides-polytetrafluoroethylene (PTFE) composite sheet, it is characterized in that, described sheet material to be formed by the sheet material containing aramid fibrid and aramid staple fiber and the polytetrafluoroethylene floor becoming stratiform in the direction, face of above-mentioned sheet material and through the aromatic polyamides-polytetrafluoroethylene (PTFE) composite sheet of 370 DEG C ~ 410 DEG C of calcination process, voidage is more than 30% and thickness is 150
μbelow m.
2. the aromatic polyamides described in claim 1-polytetrafluoroethylene (PTFE) composite sheet, wherein, the dielectric constant of 200 DEG C and dielectric loss angle tangent show minimizing trend relative to the increase measuring frequency.
3. the aromatic polyamides described in claim 1-polytetrafluoroethylene (PTFE) composite sheet, wherein, the ratio of the dielectric constant of the ratio of dielectric constant of the dielectric constant of 100 DEG C and 25 DEG C or the dielectric constant of 200 DEG C and 25 DEG C is 0.9 ~ 1.1.
4. the preparation method of the aromatic polyamides described in claim 1-polytetrafluoroethylene (PTFE) composite sheet, it is characterized in that, to carry out after calendering processes, carrying out calcination process being copied the sheet material sheet material prepared by method for making being coated with polytetrafluoroethylene (PTFE) microparticle dispersion by wet type by aramid fibrid and aramid staple fiber.
5. a high-frequency device, is characterized in that, the aromatic polyamides-polytetrafluoroethylene (PTFE) composite sheet of use described in claim 1 is as insulating element.
6. a generator, is characterized in that, the aromatic polyamides-polytetrafluoroethylene (PTFE) composite sheet of use described in claim 1 is as insulating element.
7. a motor, is characterized in that, the aromatic polyamides-polytetrafluoroethylene (PTFE) composite sheet of use described in claim 1 is as insulating element.
8. a converter, is characterized in that, the aromatic polyamides-polytetrafluoroethylene (PTFE) composite sheet of use described in claim 1 is as insulating element.
9. a transverter, is characterized in that, the aromatic polyamides-polytetrafluoroethylene (PTFE) composite sheet of use described in claim 1 is as insulating element.
10. a printed board, is characterized in that, the aromatic polyamides-polytetrafluoroethylene (PTFE) composite sheet of use described in claim 1 is as insulating element.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012185569A JP5954537B2 (en) | 2012-08-24 | 2012-08-24 | Aramid-polytetrafluoroethylene composite sheet, method for producing the same, and high-frequency device using the same |
| JP2012-185569 | 2012-08-24 | ||
| PCT/JP2013/065989 WO2014030408A1 (en) | 2012-08-24 | 2013-06-10 | Aramid-polytetrafluoroethylene composite sheet, method for producing same, and high frequency device using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104582961A CN104582961A (en) | 2015-04-29 |
| CN104582961B true CN104582961B (en) | 2016-04-20 |
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| CN201380044089.5A Active CN104582961B (en) | 2012-08-24 | 2013-06-10 | The preparation method of aromatic polyamides-polytetrafluoroethylene (PTFE) composite sheet, this sheet material and use the high-frequency device of this sheet material |
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| Country | Link |
|---|---|
| JP (1) | JP5954537B2 (en) |
| KR (1) | KR102004582B1 (en) |
| CN (1) | CN104582961B (en) |
| TW (1) | TWI617444B (en) |
| WO (1) | WO2014030408A1 (en) |
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| CN1694809A (en) * | 2002-10-01 | 2005-11-09 | 纳幕尔杜邦公司 | Formation of aramid paper laminate |
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| JP3514903B2 (en) * | 1995-08-03 | 2004-04-05 | 帝人テクノプロダクツ株式会社 | Fluoro-resin-based sheet, sheet laminated composite, method for producing the same and use thereof |
| JPH10338809A (en) * | 1997-04-08 | 1998-12-22 | Sumitomo Chem Co Ltd | Composite film comprising low-permittivity resin and p-directing polyamide, prepreg thereof and use thereof |
| JP4261590B2 (en) * | 2007-01-31 | 2009-04-30 | 株式会社日立エンジニアリング・アンド・サービス | Adhesive-free aramid-polyester laminate, production method and production apparatus thereof |
| JP5603029B2 (en) * | 2009-06-22 | 2014-10-08 | 河村産業株式会社 | Insulating sheet for electric motor and manufacturing method thereof |
| JP5994972B2 (en) * | 2012-04-20 | 2016-09-21 | デュポン帝人アドバンスドペーパー株式会社 | Aramid-resin film laminate and method for producing the same |
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- 2012-08-24 JP JP2012185569A patent/JP5954537B2/en active Active
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2013
- 2013-06-10 KR KR1020157007017A patent/KR102004582B1/en active IP Right Grant
- 2013-06-10 WO PCT/JP2013/065989 patent/WO2014030408A1/en active Application Filing
- 2013-06-10 CN CN201380044089.5A patent/CN104582961B/en active Active
- 2013-07-03 TW TW102123771A patent/TWI617444B/en active
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| CN1129456A (en) * | 1994-04-28 | 1996-08-21 | 大金工业株式会社 | Composite porous polytetrafluoroethylene membrane |
| JP2001214318A (en) * | 2000-02-01 | 2001-08-07 | Teijin Ltd | Heat-resistant protective clothing |
| CN1694809A (en) * | 2002-10-01 | 2005-11-09 | 纳幕尔杜邦公司 | Formation of aramid paper laminate |
| JP2005066921A (en) * | 2003-08-21 | 2005-03-17 | Teijin Techno Products Ltd | Manufacturing method of composite sheet and composite sheet |
| JP2006181824A (en) * | 2004-12-27 | 2006-07-13 | Tomoegawa Paper Co Ltd | Method for producing laminated fluorocarbon resin sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5954537B2 (en) | 2016-07-20 |
| TW201412532A (en) | 2014-04-01 |
| JP2014043499A (en) | 2014-03-13 |
| CN104582961A (en) | 2015-04-29 |
| WO2014030408A1 (en) | 2014-02-27 |
| KR20150046206A (en) | 2015-04-29 |
| TWI617444B (en) | 2018-03-11 |
| KR102004582B1 (en) | 2019-07-26 |
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