JPH09134614A - Heat resistant insulated wire - Google Patents
Heat resistant insulated wireInfo
- Publication number
- JPH09134614A JPH09134614A JP7290749A JP29074995A JPH09134614A JP H09134614 A JPH09134614 A JP H09134614A JP 7290749 A JP7290749 A JP 7290749A JP 29074995 A JP29074995 A JP 29074995A JP H09134614 A JPH09134614 A JP H09134614A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- coating layer
- insulated wire
- resistant insulated
- heat
- 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.)
- Withdrawn
Links
- 229920005989 resin Polymers 0.000 claims abstract description 65
- 239000011347 resin Substances 0.000 claims abstract description 65
- 239000004020 conductor Substances 0.000 claims abstract description 18
- 239000010445 mica Substances 0.000 claims abstract description 14
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 13
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 9
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229920003257 polycarbosilane Polymers 0.000 claims abstract description 8
- 229920001709 polysilazane Polymers 0.000 claims abstract description 8
- 229920003203 poly(dimethylsilylene-co-phenylmethyl- silylene) polymer Polymers 0.000 claims abstract description 7
- 239000011247 coating layer Substances 0.000 claims description 73
- 239000010410 layer Substances 0.000 claims description 8
- 229920002050 silicone resin Polymers 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 abstract description 12
- 239000003973 paint Substances 0.000 abstract description 4
- 239000011248 coating agent Substances 0.000 description 14
- 238000000576 coating method Methods 0.000 description 14
- 238000009413 insulation Methods 0.000 description 12
- 229920001296 polysiloxane Polymers 0.000 description 6
- -1 silane compound Chemical class 0.000 description 5
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 4
- 239000004327 boric acid Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000007810 chemical reaction solvent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000011256 inorganic filler Substances 0.000 description 2
- 229910003475 inorganic filler Inorganic materials 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 150000004756 silanes Chemical class 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- GHXRKGHKMRZBJH-UHFFFAOYSA-N boric acid Chemical compound OB(O)O.OB(O)O GHXRKGHKMRZBJH-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 229910052628 phlogopite Inorganic materials 0.000 description 1
- 238000012643 polycondensation polymerization Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Landscapes
- Paints Or Removers (AREA)
- Organic Insulating Materials (AREA)
- Insulated Conductors (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、可撓性、絶縁性に
優れた耐熱性絶縁電線に係わる。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat resistant insulated wire having excellent flexibility and insulating properties.
【０００２】[0002]
【従来の技術】従来から、原子力設備を始め３００℃以
上の高温で使用可能な耐熱性絶縁電線としてポリボロシ
ロキサン樹脂等の耐熱性に優れた樹脂に酸化アルミニウ
ム、酸化クロム等の無機物の充填剤を添加して作成した
塗料を、導体上に塗布し、焼成してセラミック化した絶
縁被覆を有する所謂エナメル線が知られている。2. Description of the Related Art Conventionally, as a heat-resistant insulated wire that can be used at high temperatures of 300 ° C. or higher including nuclear facilities, a resin having excellent heat resistance such as polyborosiloxane resin is used as a filler for inorganic substances such as aluminum oxide and chromium oxide. There is known a so-called enamel wire having an insulating coating which is made by applying a coating material prepared by adding on a conductor and firing it to form a ceramic.
【０００３】これらの耐熱性絶縁電線は無機物の充填剤
が樹脂により一体化されてなるものであり、ポリボロシ
ロキサン樹脂等を用いた場合、樹脂の融点が非常に高く
耐熱性の点では問題が生じないが、充填剤として使用す
る無機物により耐熱性絶縁電線の絶縁特性、導体との密
着性、可撓性等が問題となる。These heat-resistant insulated wires are obtained by integrating an inorganic filler with a resin. When a polyborosiloxane resin or the like is used, the melting point of the resin is very high and there is a problem in heat resistance. Although it does not occur, the insulating property of the heat resistant insulated wire, the adhesion with the conductor, the flexibility, etc. become a problem depending on the inorganic material used as the filler.
【０００４】[0004]
【発明が解決しようとする課題】電線の可撓性、導体と
の密着性を満足させる充填剤を使用して耐熱性絶縁電線
を作成すると、形成される被膜は多孔性となり絶縁性が
劣ってしまった。また、絶縁性を満足させる無機物の充
填剤を添加して絶縁被覆を作成すると、可撓性、導体と
の密着性を満足できる耐熱性絶縁電線が得られなかっ
た。最悪の場合、反復して熱膨張する導体から絶縁被覆
が剥離を生じてしまった。When a heat-resistant insulated wire is prepared by using a filler that satisfies the flexibility of the wire and the adhesion to the conductor, the coating formed is porous and the insulation is poor. Oops. In addition, when an insulating coating is prepared by adding an inorganic filler that satisfies the insulating property, a heat-resistant insulated wire that is satisfactory in flexibility and adhesiveness with a conductor cannot be obtained. In the worst case, the insulating coating was peeled off from the conductors which were repeatedly thermally expanded.
【０００５】上記欠点を解消するため、本発明は絶縁性
に優れ、しかも可撓性、導体との密着性を満足でき、絶
縁被覆の剥離が生じない長寿命の耐熱性絶縁電線を提供
することを目的とする。In order to solve the above-mentioned drawbacks, the present invention provides a heat-resistant insulated wire having a long life, which is excellent in insulation properties, is flexible, and can satisfy the adhesiveness with a conductor, and the insulation coating is not peeled off. With the goal.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するた
め、本発明の耐熱性絶縁電線は、導体上にポリボロシロ
キサン樹脂、ポリカルボシラン樹脂、ポリシラスチレン
樹脂、ポリチタノカルボシラン樹脂、ポリシラザン樹脂
から選ばれた１種または２種以上及び酸化マグネシウム
を含有する第１被覆層と、第１被覆層上にポリボロシロ
キサン樹脂、ポリカルボシラン樹脂、ポリシラスチレン
樹脂、ポリチタノカルボシラン樹脂、ポリシラザン樹脂
から選ばれた１種または２種以上及びマイカを含有する
第２被覆層とを備え、第１被覆層または第２被覆層のそ
れぞれ１層以上が交互に設けられるものである。In order to achieve the above object, the heat resistant insulated wire of the present invention comprises a polyborosiloxane resin, a polycarbosilane resin, a polysilastyrene resin, a polytitanocarbosilane resin, and First coating layer containing one or more selected from polysilazane resins and magnesium oxide, and polyborosiloxane resin, polycarbosilane resin, polysilastyrene resin, polytitanocarbosilane on the first coating layer A second coating layer containing one or more selected from resins and polysilazane resins and mica, and one or more layers of the first coating layer and the second coating layer are alternately provided.
【０００７】更に、第１被覆層または第２被覆層はそれ
ぞれシリコーン樹脂を含有するものであってもよい。導
体上にポリボロシロキサン樹脂、ポリカルボシラン樹
脂、ポリシラスチレン樹脂、ポリチタノカルボシラン樹
脂、ポリシラザン樹脂の何れか１種または２種以上の樹
脂及び酸化マグネシウムを含有する第１被覆層は、可撓
性を有し、導体の熱膨張に追従して熱膨張するため、導
体との密着性がよく、被覆の剥離が生じない。第１被覆
層上に前述と同様の樹脂及びマイカを含有する第２被覆
層は絶縁性に優れたものである。Further, each of the first coating layer and the second coating layer may contain a silicone resin. The first coating layer containing a polyborosiloxane resin, a polycarbosilane resin, a polysilastyrene resin, a polytitanocarbosilane resin, a polysilazane resin, or two or more resins and magnesium oxide on the conductor, Since it has flexibility and thermally expands following the thermal expansion of the conductor, it adheres well to the conductor and does not peel off the coating. The second coating layer containing the same resin and mica as described above on the first coating layer has excellent insulating properties.
【０００８】このような特性を備えた第１被覆層と、第
２被覆層を少なくとも１層づつ設ければ、可撓性があ
り、絶縁性のある耐熱性絶縁電線を得ることができる。
更に、第１被覆層と、第２被覆層を交互に複数層設けた
ものは、高度に可撓性を備え、絶縁特性が非常に優れた
耐熱性絶縁電線とすることができる。更に、前述の樹脂
には必要に応じて反応溶剤としてシリコーン樹脂を混合
させてもよい。By providing at least one first coating layer and at least one second coating layer having such characteristics, it is possible to obtain a heat-resistant insulated wire which is flexible and has insulating properties.
Furthermore, the one in which the first coating layer and the second coating layer are alternately provided in plural layers can be a heat-resistant insulated wire that is highly flexible and has excellent insulating properties. Furthermore, a silicone resin may be mixed with the above resin as a reaction solvent, if necessary.
【０００９】[0009]
【発明の実施の形態】本発明の耐熱性絶縁電線を適用し
た一実施例を図面を参照して説明する。図１に示すよう
に、耐熱性絶縁電線１は導体である心線２上に第１被覆
層３及び第２被覆層４を順次交互に設けたものである。
心線２は所望の高温に対して耐熱性を有するものであ
り、ニッケル線、アルミニウム線、またはこれらをメッ
キした銅線が好ましい。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment to which the heat resistant insulated wire of the present invention is applied will be described with reference to the drawings. As shown in FIG. 1, a heat-resistant insulated electric wire 1 is one in which a first coating layer 3 and a second coating layer 4 are alternately provided on a core wire 2 which is a conductor.
The core wire 2 has heat resistance to a desired high temperature, and is preferably a nickel wire, an aluminum wire, or a copper wire plated with these.
【００１０】第１被覆層３は心線２の熱膨張に追従する
熱膨張をする層であり、耐熱性絶縁電線１に可撓性を付
与するものである。このような第１被覆層３のバインダ
ー樹脂として使用される樹脂は耐熱性絶縁電線１の耐熱
性を確保できる。このような耐熱性を有する樹脂として
ポリボロシロキサン樹脂、ポリカルボシラン樹脂、ポリ
シラスチレン樹脂、ポリチタノカルボシラン樹脂、ポリ
シラザン樹脂が使用可能である。ポリボロシロキサン樹
脂はシラン化合物と、ホウ酸化合物を縮重合して得られ
るものである。シラン化合物としては、ＳｉＸ4、Ｓｉ
ＲＸ3、ＳｉＲＲ´Ｘ2で表されるものであり、式中Ｒ、
Ｒ´はアルキル基またはアリール基であり、Ｘは水酸
基、アルコキシル基、アセトキシル基、ハロゲン基等で
あって、水酸基の場合はその脱水縮合物を含むものであ
る。ホウ酸化合物としては、ホウ酸、無水ホウ酸、ホウ
酸金属塩、ハロゲン化ホウ素、ホウ酸エルテル等が挙げ
られる。これらのシラン化合物及びホウ酸化合物のそれ
ぞれ１種または２種以上を原子比で１：１０〜１０：１
好ましくは５：１〜１：５の範囲で５０〜８００℃で加
熱して縮重合して得ることができ、表１に示すような主
骨格からなる。The first coating layer 3 is a layer that thermally expands following the thermal expansion of the core wire 2 and imparts flexibility to the heat resistant insulated wire 1. The resin used as the binder resin for the first coating layer 3 can ensure the heat resistance of the heat resistant insulated wire 1. As the resin having such heat resistance, polyborosiloxane resin, polycarbosilane resin, polysilastyrene resin, polytitanocarbosilane resin, and polysilazane resin can be used. The polyborosiloxane resin is obtained by polycondensing a silane compound and a boric acid compound. Examples of silane compounds include SiX 4 and Si
RX 3 and SiRR′X 2 are represented by R,
R'is an alkyl group or an aryl group, X is a hydroxyl group, an alkoxyl group, an acetoxyl group, a halogen group or the like, and in the case of a hydroxyl group, a dehydration condensation product thereof is included. Examples of the boric acid compound include boric acid, boric anhydride, boric acid metal salts, boron halides, and borate borate. Each of these silane compounds and boric acid compounds may be used alone or in combination of two or more in an atomic ratio of 1:10 to 10: 1.
Preferably, it can be obtained by condensation polymerization by heating at 50 to 800 ° C. in the range of 5: 1 to 1: 5, and has a main skeleton as shown in Table 1.
【００１１】更に、ポリカルボシラン樹脂、ポリシラス
チレン樹脂、ポリチタノカルボシラン樹脂、ポリシラザ
ン樹脂は表１に示す主骨格を有するものである。Further, polycarbosilane resin, polysilazastyrene resin, polytitanocarbosilane resin, and polysilazane resin have the main skeleton shown in Table 1.
【００１２】[0012]
【表１】 [Table 1]
【００１３】更に、バインダー樹脂としてポリボロシロ
キサン樹脂の反応溶剤として、シリコーン樹脂（シリコ
ーオイル）等を使用することができる。シリコーン樹脂
として純シリコーンの他、シリコーンアルキッド、シリ
コーンポリエステル、シリコーンアクリル、シリコーン
エポキシ、シリコーンウレタン等も使用することができ
る。シリコーン樹脂の添加量は５〜２０部である。Furthermore, a silicone resin (silicone oil) or the like can be used as a reaction solvent for the polyborosiloxane resin as the binder resin. As the silicone resin, in addition to pure silicone, silicone alkyd, silicone polyester, silicone acrylic, silicone epoxy, silicone urethane and the like can be used. The amount of silicone resin added is 5 to 20 parts.
【００１４】このようなバインダー樹脂に添加される酸
化マグネシウムは第１被覆層３に心線と同じ熱膨張を付
与するものである。添加量はバインダー樹脂に対して１
０〜１００部、好ましくは３０〜７０部である。更に、
第１被覆層には適宜本発明の効果を損わない範囲でレベ
リング剤等の添加剤を添加することができる。Magnesium oxide added to such a binder resin imparts the same thermal expansion as the core wire to the first coating layer 3. Addition amount is 1 for binder resin
It is 0 to 100 parts, preferably 30 to 70 parts. Furthermore,
Additives such as a leveling agent can be appropriately added to the first coating layer within a range that does not impair the effects of the present invention.
【００１５】第１被覆層の厚さは所望の可撓性、心線と
の密着性、絶縁性を得るため、第２被覆層の厚さと関連
して異なるものである。第２被覆層の厚さの１．２〜
２．５倍が好ましく、且つ、第１被覆層の厚さとして３
〜１０μｍが好ましい。３以下であると塗布むらが生じ
易く、１０μｍ以上であるとクラックを生じやすくなっ
てしまう。The thickness of the first coating layer is different in relation to the thickness of the second coating layer in order to obtain desired flexibility, adhesion to the core wire and insulation. The thickness of the second coating layer is 1.2 to
2.5 times is preferable, and the thickness of the first coating layer is 3
-10 μm is preferred. If it is 3 or less, coating unevenness is likely to occur, and if it is 10 μm or more, cracks are likely to occur.
【００１６】第１被覆層上に積層される第２被覆層は第
１被覆層と同様のバインダー樹脂にマイカを添加したも
のである。マイカを添加すると絶縁性が著しく向上され
る。マイカを含有すると絶縁性は優れたものが得られる
が、マイカを含有した層と心線の熱膨張とが異なるた
め、心線の密着が充分に得られない。しかし、第１被覆
層を介して設けることにより、心線の熱膨張を直接受け
ることがなく、第２被覆層の剥離を防止できる。また、
マイカは加熱されることにより、配向性が低下し、この
ため、絶縁特性が低下してしまうが、第１被覆層を介し
て設けられると、心線の熱を直接受けないため、絶縁特
性も高度に維持され得る。The second coating layer laminated on the first coating layer is the same binder resin as the first coating layer, to which mica is added. Addition of mica significantly improves the insulation. When mica is contained, excellent insulation can be obtained, but since the thermal expansion of the layer containing mica is different from that of the core, the core cannot be sufficiently adhered. However, by providing it through the first coating layer, the second coating layer can be prevented from being peeled off without being directly subjected to the thermal expansion of the core wire. Also,
When the mica is heated, the orientation decreases, and thus the insulating property deteriorates. However, when the mica is provided via the first coating layer, the heat of the core wire is not directly received, and therefore the insulating property is also reduced. Can be highly maintained.
【００１７】マイカの添加量はバインダー樹脂に対して
１０〜１００部、好ましくは３０〜７０部である。更
に、第２被覆層には適宜本発明の効果を損わない範囲で
酸化マグネシウム等の添加剤を添加することができる。
第２被覆層の厚さは第１被覆層との関係で異なるもので
あり、前述の関係を備え、且つ、２〜７μｍであること
が好ましい。２以下であると絶縁性を確保できず、７μ
ｍ以上であるとクラックを生じ易い。The amount of mica added is 10 to 100 parts, preferably 30 to 70 parts, relative to the binder resin. Further, an additive such as magnesium oxide may be added to the second coating layer as long as the effect of the present invention is not impaired.
The thickness of the second coating layer differs depending on the relationship with the first coating layer, has the above-described relationship, and is preferably 2 to 7 μm. If it is 2 or less, insulation cannot be secured, and 7μ
If it is m or more, cracks are likely to occur.
【００１８】このような耐熱性絶縁電線を形成するに
は、バインダー樹脂を有機溶剤に溶解または分散させ
る。使用可能な有機溶剤としてキシレン、トルエン、ベ
ンゼン、エタノール、ブタノール、セロソルブ類、ケト
ン類、Ｎ−メチル−２−ピロリドン、ジメチルアセトア
ミド、ジメチルスルホキシド、フェノール類等である。
これらの溶剤に溶解または分散させたバインダー樹脂に
酸化マグネシウムまたはマイカを添加し、それぞれ第１
被覆層、第２被覆層を形成する塗布液を作成する。心線
にまず、第１被覆層の塗布液を塗布後、５００〜６００
℃で加熱、焼成すると、有機成分は分解してセラミック
化し、第１被覆層が形成される。その後第２被覆層、第
１被覆層の塗布液を順次、塗布、焼成することを反復
し、心線上に第１被覆層が形成され、その上に第２被覆
層、第１被覆層が交互に積層された耐熱性絶縁電線を得
ることができる。To form such a heat resistant insulated wire, a binder resin is dissolved or dispersed in an organic solvent. Examples of usable organic solvents include xylene, toluene, benzene, ethanol, butanol, cellosolves, ketones, N-methyl-2-pyrrolidone, dimethylacetamide, dimethylsulfoxide, and phenols.
Magnesium oxide or mica was added to the binder resin dissolved or dispersed in these solvents, and
A coating liquid for forming the coating layer and the second coating layer is prepared. First, after applying the coating liquid for the first coating layer to the core wire, 500 to 600
When heated and baked at 0 ° C., the organic components are decomposed and made into ceramics, and the first coating layer is formed. After that, the coating liquid for the second coating layer and the coating liquid for the first coating layer are sequentially applied and fired repeatedly to form the first coating layer on the core wire, and the second coating layer and the first coating layer are alternately formed thereon. It is possible to obtain a heat resistant insulated electric wire laminated on.
【００１９】このように形成される耐熱性絶縁電線は耐
熱温度が常用で３００℃以上の耐熱性を有し、絶縁性に
優れ、可撓性を有し、導体との密着性が良好であり、長
寿命である。更に、第１被覆層及び第２被覆層の厚さを
調整し、積層する層数を適宜選択することにより、耐熱
性絶縁電線に所望の可撓性、絶縁性を調整して付与する
ことができる。The heat-resistant insulated wire thus formed has a normal heat-resistant temperature of 300 ° C. or more, is excellent in insulation, has flexibility, and has good adhesion to a conductor. , Long life. Furthermore, by adjusting the thicknesses of the first coating layer and the second coating layer and appropriately selecting the number of layers to be laminated, it is possible to adjust and impart desired flexibility and insulation to the heat resistant insulated wire. it can.
【００２０】上述の耐熱性絶縁電線は本発明の一実施例
の説明であって、本発明はこれに限定されない。即ち、
導体上に第１被覆層と第２被覆層とを順次設けた２層構
造のものであってよく、第１被覆層と第２被覆層を交互
に多数層設けたものであってもよい。 ［実施例］ポリボロシロキサン樹脂５０部を、ＮＭＰ溶
剤５０部に分散した溶液に酸化マグネシウムを表２に示
す割合で配合した塗料Ａと、同様の溶液にマイカを表２
に示す割合で配合した塗料Ｂを作成した。線径１．０ｍ
ｍφのニケッルメッキ銅線上に塗料Ａを塗布し、５００
℃で焼成し厚さ８μｍの第１被覆層と、塗料Ｂを第１被
覆層上に塗布し、４５０℃で焼成し厚さ４μｍの第２被
覆層とを形成した。The above heat-resistant insulated wire is an explanation of one embodiment of the present invention, and the present invention is not limited to this. That is,
The conductor may have a two-layer structure in which a first coating layer and a second coating layer are sequentially provided on the conductor, or a plurality of first coating layers and second coating layers may be alternately provided. [Example] Paint A prepared by blending 50 parts of polyborosiloxane resin in 50 parts of NMP solvent with magnesium oxide in a ratio shown in Table 2, and mica in the same solution.
A coating material B was blended in the proportion shown in. Wire diameter 1.0m
Apply paint A on nickel-plated copper wire of mφ and
A first coating layer having a thickness of 8 μm was baked at 0 ° C., and a coating material B was applied onto the first coating layer and baked at 450 ° C. to form a second coating layer having a thickness of 4 μm.
【００２１】更に、同様の成分、方法により表２に示す
厚さの第１被覆層、第２被覆層を、それぞれ交互に第１
被覆層を３層、第２被覆層を２層形成した。得られた耐
熱性絶縁電線の可撓性、絶縁抵抗、絶縁破壊電圧を４０
０℃で２４時間加熱前後に測定した。結果を表２に示
す。尚、可撓性は合格巻付倍径法で測定し、絶縁抵抗は
２ケ撚法で測定した。Further, the first coating layer and the second coating layer having the thicknesses shown in Table 2 are alternately formed into the first coating layer by the same composition and method.
Three coating layers and two second coating layers were formed. The flexibility, insulation resistance, and breakdown voltage of the resulting heat-resistant insulated wire are 40
It was measured before and after heating at 0 ° C. for 24 hours. Table 2 shows the results. The flexibility was measured by the pass winding method and the insulation resistance was measured by the double twist method.
【００２２】比較例として、実施例と同様の成分で、第
１被覆層のみのもの、第２被覆層のみのものを作成し
た。得られた耐熱性絶縁電線の可撓性、絶縁抵抗、絶縁
破壊電圧を同様に測定した。結果を表２に示す。As comparative examples, components having the same components as those of the examples and having only the first coating layer and only the second coating layer were prepared. The flexibility, insulation resistance and breakdown voltage of the obtained heat resistant insulated electric wire were measured in the same manner. Table 2 shows the results.
【００２３】[0023]
【表２】 [Table 2]
【００２４】結果からも明らかなように、実施例は加熱
後であっても可撓性、絶縁特性が優れていることがわか
った。As is clear from the results, it was found that the examples had excellent flexibility and insulating properties even after heating.
【００２５】[0025]
【発明の効果】以上の説明から明らかなように、本発明
の耐熱性絶縁電線は、ポリボロシロキサン樹脂等をそれ
ぞれバインダー樹脂とし、酸化マグネシウムを含有する
第１被覆層と、マイカを含有する第２被覆層とを順次導
体上に交互に設けたため、耐熱性を有し、絶縁性に優れ
たものである。しかも、第１被覆層及び第２被覆層の厚
さを調整し、積層する層数を適宜選択することにより、
所望の可撓性を有する耐熱性絶縁電線を得ることができ
る。更に、心線との密着性が良好であり、長寿命であ
る。As is apparent from the above description, the heat-resistant insulated wire of the present invention uses the polyborosiloxane resin as the binder resin, the first coating layer containing magnesium oxide, and the first coating layer containing mica. Since the two coating layers are sequentially provided alternately on the conductor, they have heat resistance and excellent insulating properties. Moreover, by adjusting the thicknesses of the first coating layer and the second coating layer and appropriately selecting the number of layers to be laminated,
A heat resistant insulated wire having desired flexibility can be obtained. Further, the adhesion to the core wire is good and the life is long.
【図１】本発明の一実施例を示す断面図。FIG. 1 is a sectional view showing an embodiment of the present invention.
１‥‥‥耐熱性絶縁電線 ２‥‥‥心線（導体） ３‥‥‥第１被覆層 ４‥‥‥第２被覆層 1 ... Heat-resistant insulated wire 2 ... Core wire (conductor) 3 ... 1st coating layer 4 ... 2nd coating layer
Claims (2)
ルボシラン樹脂、ポリシラスチレン樹脂、ポリチタノカ
ルボシラン樹脂、ポリシラザン樹脂から選ばれた１種ま
たは２種以上及び酸化マグネシウムを含有する第１被覆
層と、前記第１被覆層上にポリボロシロキサン樹脂、ポ
リカルボシラン樹脂、ポリシラスチレン樹脂、ポリチタ
ノカルボシラン樹脂、ポリシラザン樹脂から選ばれた１
種または２種以上及びマイカを含有する第２被覆層とを
備え、前記第１被覆層または前記第２被覆層のそれぞれ
１層以上が交互に設けられることを特徴とする耐熱性絶
縁電線。1. A first conductor containing one or more selected from polyborosiloxane resin, polycarbosilane resin, polysilastyrene resin, polytitanocarbosilane resin, polysilazane resin and magnesium oxide on a conductor. 1 selected from a polyborosiloxane resin, a polycarbosilane resin, a polysilastyrene resin, a polytitanocarbosilane resin, and a polysilazane resin on the coating layer and the first coating layer.
A heat-resistant insulated wire, comprising: a first coating layer or a second coating layer containing two or more species and mica, and one or more layers of each of the first coating layer and the second coating layer are alternately provided.
れぞれシリコーン樹脂を含有することを特徴とする請求
項１記載の耐熱性絶縁電線。2. The heat resistant insulated wire according to claim 1, wherein each of the first coating layer and the second coating layer contains a silicone resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7290749A JPH09134614A (en) | 1995-11-09 | 1995-11-09 | Heat resistant insulated wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7290749A JPH09134614A (en) | 1995-11-09 | 1995-11-09 | Heat resistant insulated wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09134614A true JPH09134614A (en) | 1997-05-20 |
Family
ID=17760037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7290749A Withdrawn JPH09134614A (en) | 1995-11-09 | 1995-11-09 | Heat resistant insulated wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09134614A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2014702A1 (en) | 2007-07-11 | 2009-01-14 | Nitto Denko Corporation | Resin for optical semiconductor element encapsulation containing polyborosiloxane |
| WO2013045224A3 (en) * | 2011-09-29 | 2013-12-19 | Siemens Aktiengesellschaft | Electrical machine and method for producing same |
| CN111048255A (en) * | 2019-12-04 | 2020-04-21 | 安徽华通电缆集团有限公司 | High-flame-retardant ultraviolet-irradiation-proof power cable for rail transit |
-
1995
- 1995-11-09 JP JP7290749A patent/JPH09134614A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2014702A1 (en) | 2007-07-11 | 2009-01-14 | Nitto Denko Corporation | Resin for optical semiconductor element encapsulation containing polyborosiloxane |
| WO2013045224A3 (en) * | 2011-09-29 | 2013-12-19 | Siemens Aktiengesellschaft | Electrical machine and method for producing same |
| CN111048255A (en) * | 2019-12-04 | 2020-04-21 | 安徽华通电缆集团有限公司 | High-flame-retardant ultraviolet-irradiation-proof power cable for rail transit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20030204 |