JPH0473815A - Refrigerant resistant insulated wire - Google Patents
Refrigerant resistant insulated wireInfo
- Publication number
- JPH0473815A JPH0473815A JP27693690A JP27693690A JPH0473815A JP H0473815 A JPH0473815 A JP H0473815A JP 27693690 A JP27693690 A JP 27693690A JP 27693690 A JP27693690 A JP 27693690A JP H0473815 A JPH0473815 A JP H0473815A
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- insulated wire
- polyol
- polyurethane resin
- poly
- 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.)
- Pending
Links
- 239000003507 refrigerant Substances 0.000 title claims abstract description 31
- -1 poly-epsilon-caprolactam polyol Chemical class 0.000 claims abstract description 19
- 229920005862 polyol Polymers 0.000 claims abstract description 16
- 150000003077 polyols Chemical class 0.000 claims abstract description 15
- 238000000576 coating method Methods 0.000 claims abstract description 14
- 239000011248 coating agent Substances 0.000 claims abstract description 13
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims abstract description 13
- 239000004020 conductor Substances 0.000 claims abstract description 11
- 238000007765 extrusion coating Methods 0.000 claims abstract description 7
- 239000011247 coating layer Substances 0.000 claims description 18
- 229920001610 polycaprolactone Polymers 0.000 claims description 5
- 239000004970 Chain extender Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000003795 chemical substances by application Substances 0.000 abstract description 3
- 238000001125 extrusion Methods 0.000 abstract description 2
- ANLVEXKNRYNLDH-UHFFFAOYSA-N 1,3-dioxonan-2-one Chemical compound O=C1OCCCCCCO1 ANLVEXKNRYNLDH-UHFFFAOYSA-N 0.000 abstract 1
- 239000002966 varnish Substances 0.000 description 14
- 238000012360 testing method Methods 0.000 description 13
- 238000009413 insulation Methods 0.000 description 8
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 229920005749 polyurethane resin Polymers 0.000 description 6
- 239000010410 layer Substances 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 239000004593 Epoxy Substances 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 229920000728 polyester Polymers 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 229920000616 Poly(1,4-butylene adipate) Polymers 0.000 description 1
- 229920000562 Poly(ethylene adipate) Polymers 0.000 description 1
- WNLRTRBMVRJNCN-UHFFFAOYSA-L adipate(2-) Chemical compound [O-]C(=O)CCCCC([O-])=O WNLRTRBMVRJNCN-UHFFFAOYSA-L 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- VLKZOEOYAKHREP-UHFFFAOYSA-N hexane Substances CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
Landscapes
- Insulated Conductors (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明の耐冷媒性絶縁電線は、例えば電気冷凍庫、冷蔵
庫、ルームクーラー等のコンプレッサ内の配線に使用さ
れるものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The refrigerant-resistant insulated wire of the present invention is used, for example, for wiring in compressors of electric freezers, refrigerators, room coolers, and the like.
（従来の技術）
エアコン、冷蔵庫、冷凍庫等のコンプレッサー内の配線
に使用される絶縁電線は一般に、絶縁電線としての電気
的、機械的性能はもとより、冷媒として使用されている
フレオンや潤滑油と接触するため十分な耐冷媒性、耐油
性が要求される。(Prior art) Insulated wires used for wiring in compressors of air conditioners, refrigerators, freezers, etc., not only have electrical and mechanical performance as insulated wires, but also come into contact with Freon and lubricating oil used as refrigerants. Therefore, sufficient refrigerant resistance and oil resistance are required.
従来のこの種の絶縁電線（以下耐冷媒性絶縁電線と記す
）としては、第３図に示すように導体Ａの外周に絶縁体
として耐冷媒性に優れたポルエステル繊維の編組Ｃが設
けられ、その外周にポリエステルフィルムＤが一重又は
二重に巻かれ、さらにその外周にポリエステル繊維の編
組Ｅが設けられたものが使用されている。A conventional insulated wire of this type (hereinafter referred to as a refrigerant-resistant insulated wire) has a braid C of polyester fibers having excellent refrigerant resistance as an insulator provided around the outer periphery of a conductor A, as shown in FIG. A polyester film D is wound around the outer periphery in a single or double layer, and a braid E of polyester fibers is further provided on the outer periphery.
（発明が解決しようとする課題）
しかしながら従来の耐冷媒性絶縁電線はその外周にプラ
スチックフィルムＤが巻かれたり、プラスチック繊維に
よる編組Ｃ，Ｅ層が設けられたりしているため、同電線
を切断したり皮剥きしたりする、いわゆる端末処理時に
それらがばらけ易い、そのため、端末処理作業は人手に
頼らざるを得す、市場からの要求として端末処理を自動
端末処理機で作業できるものが強く望まれている。(Problem to be solved by the invention) However, since conventional refrigerant-resistant insulated wires have plastic film D wrapped around them or braided layers C and E made of plastic fibers, it is difficult to cut the wires. They tend to come apart during so-called terminal processing, such as peeling or peeling, so terminal processing must be done manually.There is a strong demand from the market for terminal processing that can be carried out using automatic terminal processing machines. desired.
また、配線した後にも前記編組Ｃ，Ｅ層が毛羽立って抜
けてしまうため、その１ａＮｋが冷媒循環系のバルブに
詰ってしまうという問題も生じている。Further, even after wiring, the braided C and E layers become fluffy and fall out, resulting in the problem that the 1aNk clogs the valve of the refrigerant circulation system.
また、製造の面においても編組工程やフィルム巻き工程
は生産性が低く、コスト高の一因ともなっていた。Furthermore, in terms of manufacturing, the braiding process and film winding process have low productivity, contributing to high costs.
そこで、導体Ａ上に耐冷媒性に優れた樹脂Ｂを押出し被
覆した絶縁型Ｍ（第１図）が開発されれば、前記端末処
理や製造上のコスト低減等の諸問題を一挙に解決できる
可能性がある。そのため、これまで種々の検討が試みら
れたが、すべてを満足するものは未だ開発されていない
。Therefore, if an insulated type M (Fig. 1) is developed in which the conductor A is extruded and coated with a resin B having excellent refrigerant resistance, various problems such as terminal treatment and manufacturing cost reduction can be solved at once. there is a possibility. For this reason, various studies have been attempted so far, but nothing that satisfies all of them has yet been developed.
（発明の目的）
本発明の目的は、耐冷媒性に優れた樹脂を押出し被覆し
てなる耐冷媒性絶縁電線を提供して、前記諸問題を解決
することにある。(Objective of the Invention) An object of the present invention is to solve the above problems by providing a refrigerant-resistant insulated wire formed by extrusion coating with a resin having excellent refrigerant resistance.
（課題を解決するための手段）
本件発明者等は前記諸問題を解決すべく鋭意研究を重ね
た結果、導体の外周に、特定の熱可塑性ポリウレタン樹
脂を薄肉状に押出し被覆してなる絶縁Ｍ線によって前記
目的を達成できることを見出した。(Means for Solving the Problem) As a result of intensive research in order to solve the above-mentioned problems, the inventors of the present invention have developed an insulation M made by extruding and coating the outer periphery of a conductor with a specific thermoplastic polyurethane resin in a thin form. It has been found that the above object can be achieved by using lines.
即ち、本発明の耐冷媒性絶縁電線は第１図のように、導
体Ａの外周に、ポリ−ε−カプロラクトンポリオール及
び／又はポリ（ヘキサメチレンカーボネート）ポリオー
ルと、鎖延長剤と、ジイソシアネート化合物とから合成
されたショアー硬さＤ５０１．’ｕ上８３以下の熱可塑
性ポリウレタン樹脂からなる被覆厚１．５ｍｍ以下の押
出し被覆による絶縁被覆層Ｂが形成されていることを特
徴とするものである。That is, the refrigerant-resistant insulated wire of the present invention, as shown in FIG. Shore hardness synthesized from D501. It is characterized in that an insulating coating layer B is formed by extrusion coating with a coating thickness of 1.5 mm or less and made of a thermoplastic polyurethane resin with a molecular weight of 83 or less.
本発明において、前記特定の熱可塑性ポリウレタン樹脂
としては、次頁に示される化学構造を有するポリ−ε−
カプロラクトンポリオール及び／又はポリＣヘキサメチ
レンカーボネート）ポリオ一ルと、例えばエチレン−グ
リコール、ｌ、４ブタンジオール、■、６−ヘキサンジ
オール等の鎖延長剤と、例えば４，４°−ジフェニルメ
タンジイソシアネート等のジイソシアネート化合物とを
混ぜ合わせ反応させて得られる樹脂の硬さがショアー硬
さＤ５０以上８３以下になるように前記三者の配合比率
を調整し、更に温度と時間をかけて重付加反応を進行さ
せて得られたものが使用される。In the present invention, the specific thermoplastic polyurethane resin is poly-ε-
caprolactone polyol and/or poly(C-hexamethylene carbonate) polyol, a chain extender such as ethylene glycol, 1,4-butanediol, 6-hexanediol, and 4,4°-diphenylmethane diisocyanate. The blending ratio of the three components is adjusted so that the hardness of the resin obtained by mixing and reacting with the diisocyanate compound is Shore hardness D50 or more and 83 or less, and the polyaddition reaction is further advanced by applying temperature and time. The obtained product is used.
ポリ−ε−カプロラクトン（ｎｏ （（ｃｏａｌｓ ｃ
ｏｏｌ、、ｏＨ）ポ リ （ヘキサメチレンカーボネー
ト）（ＨＯ［＋ＣＨ，１，０ＣＯ１，ＯＨ）その理由は
略以下の如くである。Poly-ε-caprolactone (no ((coals c
ool,,oH) Poly(hexamethylene carbonate) (HO[+CH,1,0CO1,OH) The reason is approximately as follows.
ポリウレタンのポリマー構造のうち、ポリオール成分に
ポリオキシテトラメチレングリコール或はポリ（エチレ
ンアジペート）或はポリ（１，４−プチレンアジベート
）、ポリ（１，６−ヘキサンアジペート）等を用いた汎
用のポリウレタン樹脂は、耐冷媒性試験において冷媒と
して使用されるフレオンによる劣化が著しく、耐冷媒性
絶縁電線の被覆材料としては極めて不適である。Among the polymer structures of polyurethane, general-purpose polyurethane uses polyoxytetramethylene glycol, poly(ethylene adipate), poly(1,4-butylene adipate), poly(1,6-hexane adipate), etc. as the polyol component. The polyurethane resin is significantly degraded by freon used as a refrigerant in a refrigerant resistance test, and is extremely unsuitable as a coating material for refrigerant-resistant insulated wires.
一方、ポリ−ε−カプロラクトン及び／又はポリ （ヘ
キサメチレンカーボネート）を主成分としたポリウレタ
ン樹脂は、前記フレオンによる劣化が比較的少ない。On the other hand, polyurethane resins containing poly-ε-caprolactone and/or poly(hexamethylene carbonate) as main components are relatively less susceptible to deterioration due to the Freon.
従って、この特定のポリオールを成分とするボッウレタ
ン樹脂をショアー硬さＤ５０以上８３以下に調節するこ
とによって、耐冷媒性絶縁電線のｍｒｉ材料として比較
的好適なものとなり得る。なお、前記特定のポリオール
を成分としたポリウレタン樹脂がショアー硬さＤ４１１
下のものでは所望の耐冷媒性が得られない。また、同ポ
リウレタン樹脂がショアー硬さ０７６以上８３以下のも
のでは、巻線を含浸するためのエポキシ系のワニスに触
れるとそれが硬くなって絶縁被覆層Ｂにクラックが生じ
易くなるが、ポリエステル系のワニスでは触れてもクラ
ックは発生しない、また、同ポリウレタン樹脂がショア
ー硬さＤ８４以上のものでは、エポキシ系のワニ又は勿
論、ポリエステル系のワニスに触れても絶縁被覆層Ｂに
クラックが発生し易くなる。Therefore, by adjusting the Shore hardness D of the polyurethane resin containing this specific polyol to be 50 or more and 83 or less, it can be made relatively suitable as an MRI material for refrigerant-resistant insulated wires. In addition, the polyurethane resin containing the specific polyol as a component has a Shore hardness of D411.
The desired refrigerant resistance cannot be obtained with the lower one. In addition, if the same polyurethane resin has a Shore hardness of 076 or more and 83 or less, when it comes into contact with the epoxy varnish for impregnating the winding wire, it will become hard and cracks will easily occur in the insulation coating layer B. In addition, if the same polyurethane resin has a Shore hardness of D84 or higher, cracks will not occur in the insulation coating layer B even if it comes in contact with epoxy-based varnish or, of course, polyester-based varnish. It becomes easier.
このような特定の樹脂、即ち特定のポリオールを成分と
し且つ硬度を調節した熱可塑性ポリウレタン樹脂を導体
Ａの外周に押出し被覆して、耐冷媒性に優れた絶縁電線
を得るためには、絶縁被覆層Ｂの被覆厚が１．５ｍｍ以
下であることが好ましい。なぜならば前記熱可塑性ポリ
ウレタン樹脂からなる絶縁被覆層Ｂの被覆厚が１．５ｍ
ｍを超えて厚くなると、−旦同被覆層の内部に取り込ま
れたフレオンが外部（大気）へ揮散しにくくなって、結
果的に被覆層の劣化を早めることになるためである。In order to obtain an insulated wire with excellent refrigerant resistance by extruding and coating the outer periphery of the conductor A with such a specific resin, that is, a thermoplastic polyurethane resin containing a specific polyol and having controlled hardness, an insulating coating is required. Preferably, the coating thickness of layer B is 1.5 mm or less. This is because the thickness of the insulation coating layer B made of the thermoplastic polyurethane resin is 1.5 m.
This is because if the thickness exceeds m, Freon once taken into the coating layer becomes difficult to volatilize to the outside (atmosphere), resulting in accelerated deterioration of the coating layer.
なお、本発明においては本発明の効果を阻害しない範囲
内で、前記熱可塑性ポリウレタン樹脂に老化防止剤、充
填剤、Ｕ燃剤、着色剤等を必要に応じて配合して用いる
こともできる。In addition, in the present invention, anti-aging agents, fillers, U fuel agents, colorants, etc. may be blended with the thermoplastic polyurethane resin as necessary within a range that does not impede the effects of the present invention.
（作用）
本発明の耐冷媒性絶縁電線は、第１図のように導体Ａの
外周に、前記特定のポリオールを成分とし且つショアー
硬さＤ５０以上８３以下に調整された熱可塑性ポリウレ
タン樹脂からなる被覆厚１．５ｍｍ以下で押出し被覆に
よる絶縁被覆層Ｂを形成したものであり、従来の諸問題
を解決し、冷媒として使用されるフレオンが揮散し易く
、また同冷媒による劣化も少なく、耐冷媒性に優れ、ワ
ニスによる影響を受けることがない。(Function) As shown in FIG. 1, the refrigerant-resistant insulated wire of the present invention is made of a thermoplastic polyurethane resin containing the specific polyol as a component and having a Shore hardness D of 50 or more and 83 or less, as shown in FIG. The insulating coating layer B is formed by extrusion coating with a coating thickness of 1.5 mm or less, and solves the various problems of the conventional method. Freon, which is used as a refrigerant, is easily volatilized, is less likely to be degraded by the refrigerant, and is resistant to refrigerants. It has excellent properties and is not affected by varnish.
（比較例１）
本発明の比較例１として第１表に示すように、ポリオー
ル成分としてポリオキシテトラメチレングリコールだけ
が用いられ、ショアー硬さＤ５５に調節された熱可塑性
樹脂からなる被覆厚０．５ｍｍの絶縁被覆層を、導体の
外周に押出し成形により形成した絶縁電線を得た。この
絶縁電線について、以下の＠〜＠の試験を行った。(Comparative Example 1) As shown in Table 1 as Comparative Example 1 of the present invention, only polyoxytetramethylene glycol was used as the polyol component, and the coating thickness was 0.5 mm, consisting of a thermoplastic resin adjusted to have a Shore hardness of D55. An insulated wire was obtained in which a 5 mm insulating coating layer was formed on the outer periphery of the conductor by extrusion molding. The following tests were conducted on this insulated wire.
■、Ｎ油性抽出試験：
前記絶縁被覆層８ｇに対してソックスレー試験器を用い
、溶媒として特級メチルアルコールを用いてこれを還流
サイクル６〜８回／時で還流冷却させて、６時間抽出試
験を行ない、その抽出率を調べた。なお、目標はこの抽
出率の値が１％以下とした。■N oil-based extraction test: Using a Soxhlet tester, 8 g of the insulating coating layer was cooled under reflux at a reflux cycle of 6 to 8 times/hour using special grade methyl alcohol as a solvent, and an extraction test was conducted for 6 hours. We investigated the extraction rate. Note that the target value of this extraction rate was set to be 1% or less.
■、破壊電圧試験：
約１ｍの絶縁電線を１５０℃の恒温槽で１時間乾燥した
後、同絶縁電線を一６０℃で液化させたフロンＲ−２２
とスニソ４ＧＳとを重量比８：２で混合させた混合液中
に入れた状態で、雰囲気温度を３０℃として２４時間放
置し、然る後、同混合液から取出した絶縁電線を１５０
℃で１０分間乾燥する。乾燥後、この絶縁電線を直ちに
同電線の仕上げ外径と等しい径の金属棒の周囲に電線同
士が密接するように巻きつけ、同金属棒と同絶縁電線の
導体との間に５０Ｈ２の交流電圧を加え、その破壊電圧
値を調べた。なお、目標はこの破壊電圧値がｌｏＫＶ以
上とした。■ Breakdown voltage test: After drying approximately 1 m of insulated wire in a constant temperature bath at 150°C for 1 hour, the same insulated wire was liquefied at -60°C using Freon R-22.
and Suniso 4GS at a weight ratio of 8:2 and left for 24 hours at an ambient temperature of 30°C. After that, the insulated wire taken out from the mixed solution was heated to 150°C.
Dry for 10 minutes at °C. After drying, this insulated wire is immediately wrapped around a metal rod with a diameter equal to the finished outer diameter of the wire so that the wires are closely connected, and an AC voltage of 50H2 is applied between the metal rod and the conductor of the insulated wire. was added, and its breakdown voltage value was investigated. Note that the target was for this breakdown voltage value to be loKV or higher.
＠、ワニス適合性試験Ａ。@, Varnish compatibility test A.
第２図のように約３０ｃｍの絶縁電線を二本平行に並べ
て、その上、中、下の３個所を同じ絶縁電線を使ってパ
イーンドして固定し、それにエポキシ系の含浸ワニスを
塗布して１５０℃で４時間硬化させた後、前記バインド
している絶縁電線を取り外す。そして、ワニスにより接
合されている二本の絶縁電線の端部を持って分離し、そ
れらの絶縁電線の絶縁被覆層に生ずるクラックの有無を
調べた。なお、目標は分離後、絶縁被覆層の外観に異常
のないこととした。As shown in Figure 2, arrange two insulated wires of about 30 cm in parallel, pin them at the top, middle, and bottom three points using the same insulated wire, and apply epoxy-based impregnated varnish to them. After curing at 150° C. for 4 hours, the bound insulated wires were removed. Then, the ends of two insulated wires joined with varnish were held and separated, and the presence or absence of cracks occurring in the insulation coating layer of the insulated wires was examined. The goal was to have no abnormality in the appearance of the insulating coating layer after separation.
■、フェス適合性試験Ｂ：
ワニス適合性試験Ａにおいて１５０℃で４時間の硬化を
必要としたエポキシ系の含浸ワニスに代えて、１６０℃
で２時間の硬化を必要とするポリエステル系の含浸ワニ
スな用いた以外はワニス適合性試験Ａと同様に行なった
。■, Festival compatibility test B: Instead of the epoxy-based impregnated varnish that required curing at 150°C for 4 hours in varnish compatibility test A, 160°C
The varnish compatibility test was conducted in the same manner as varnish compatibility test A, except that a polyester-based impregnated varnish requiring 2 hours of curing was used.
その結果をまとめて第１表に示す、なお、表中、
フェス適合性二〇は電線外観異常なしくｎ＝３で全てＯ
Ｋ）
×は電線（被覆層）にヒビ、割れ
クラックあり（ｎ＝３で全て
ＮＧ）
△はｎ＝３で１／３以上ＯＫ
総合評価 、○は良
×は不可
０は優良
を表す。The results are summarized in Table 1. In the table, FES suitability 20 indicates that there is no abnormality in the appearance of the electric wire and n = 3, all O.
K) ×: There are cracks and cracks in the wire (coating layer) (n=3, all NG) △: n=3, 1/3 or more OK Comprehensive evaluation, ○: Good, ×: Not acceptable, 0: Excellent.
（比較例２〜２０）
本発明のその他の比較例２〜２０として、第１表に示す
ようなポリオール成分と硬度に調整された熱可塑性ポリ
ウレタン樹脂を用い、第１表のような被覆厚の絶縁被覆
層を有する絶縁電線を得、前記比較例１と同様に＠〜■
の試験を行なった。(Comparative Examples 2 to 20) As other Comparative Examples 2 to 20 of the present invention, polyol components as shown in Table 1 and thermoplastic polyurethane resins adjusted to hardness were used, and coating thicknesses as shown in Table 1 were used. An insulated wire having an insulating coating layer was obtained, and in the same manner as in Comparative Example 1, @~■
A test was conducted.
その結果を第１表に示す。The results are shown in Table 1.
（実施例１〜２６）
本発明の実施例１〜２６として、第２表に示すようなポ
リオール成分と硬度に調整された熱可塑性ポリウレタン
樹脂を用い、第２表のような被覆厚の絶縁被覆層を有す
る絶縁電線を得、前記比較例１と同様に■〜＠の試験を
行なった。その結果を第２表に示す。(Examples 1 to 26) As Examples 1 to 26 of the present invention, polyol components as shown in Table 2 and thermoplastic polyurethane resins adjusted to hardness were used, and insulation coatings with coating thicknesses as shown in Table 2 were used. An insulated wire having a layer was obtained, and tests from ■ to @ were conducted in the same manner as in Comparative Example 1 above. The results are shown in Table 2.
第１表、第２表から明かなように、ポリオール成分とし
てポリ−ε−カプロラクトン及び／又はポリ（ヘキサメ
チレンカーボネイト）を用い、硬さがショアＤ５０から
８３の範囲に調節した熱可塑性ポリウレタン樹脂からな
る絶縁被覆層Ｂを、導体Ａの外周に１．５ｍｍ以下の被
覆厚で押出被覆した本発明の実施例の絶縁電線は、冷媒
等によって抽出される物質が少なく、またフレオンに浸
漬した後に加熱した後の絶縁破壊電圧値が高く、史には
ワニスと接触した場合にもクラックが発生しにくい（シ
ョアー硬さＤ７５以下では発生しない）など耐冷媒性絶
縁電線として適したものであることが分かる。このうち
、特に、ポリ（ヘキサメチレンカーボネイト）を単独で
用いた実施例の絶縁電線が優れた性能を有するものであ
る。As is clear from Tables 1 and 2, poly-ε-caprolactone and/or poly(hexamethylene carbonate) is used as the polyol component, and the hardness is adjusted to a Shore D range of 50 to 83. The insulated wire of the embodiment of the present invention, in which the outer periphery of the conductor A is extruded and coated with the insulation coating layer B with a coating thickness of 1.5 mm or less, has less substances extracted by refrigerant etc. The dielectric breakdown voltage value after drying is high, and cracks do not easily occur even when it comes into contact with varnish (no cracks occur when the Shore hardness is D75 or less), indicating that it is suitable as a refrigerant-resistant insulated wire. . Among these, the insulated wire of the example using poly(hexamethylene carbonate) alone has particularly excellent performance.
（発明の効果）
本発明の耐冷媒性絶縁電線は、前記のように絶縁被覆層
Ｂが耐冷媒性、耐油性に優れ、また巻線を含浸するワニ
スによる悪影響を受けることもないので、耐冷媒用モー
タの日出線として最適なものである。勿論、同絶縁被覆
層Ｂが押出し被覆されてなるものであるので、従来の端
末処理作業性が向上し、製造コストの低減化もはかれる
ものであり、その工業的価値は極めて大である。(Effects of the Invention) The refrigerant-resistant insulated wire of the present invention has excellent refrigerant-resistant and oil-resistant insulation coating layer B as described above, and is not adversely affected by the varnish that impregnates the winding. This is the best choice for the Hiji line of refrigerant motors. Of course, since the insulating coating layer B is formed by extrusion coating, the conventional terminal processing workability is improved and the manufacturing cost can be reduced, and its industrial value is extremely large.
第１図は本発明の耐冷媒性絶縁電線の斜視図、第２図は
フェス適合性試験の説明図、第３図は従来の耐冷媒性絶
縁電線の斜視図である。
Ａは導体
Ｂは絶縁被覆層
（以ｌ−羊日Ｊ
第２表
第
図
第３図FIG. 1 is a perspective view of a refrigerant-resistant insulated wire of the present invention, FIG. 2 is an explanatory diagram of a festival compatibility test, and FIG. 3 is a perspective view of a conventional refrigerant-resistant insulated wire. A is a conductor B is an insulating coating layer (Table 2, Figure 3)
Claims (1)
及び／又はポリ（ヘキサメチレンカーボネート）ポリオ
ールと、鎖延長剤と、ジイソシアネート化合物とから合
成されたショアー硬さＤ５０以上８３以下の熱可塑性ポ
リウレタン樹脂からなる被覆厚１．５ｍｍ以下の押出し
被覆による絶縁被覆層Ｂが形成されていることを特徴と
する耐冷媒性絶縁電線。The outer periphery of the conductor A is made of a thermoplastic polyurethane resin having a Shore hardness D of 50 or more and 83 or less synthesized from poly-ε-caprolactone polyol and/or poly(hexamethylene carbonate) polyol, a chain extender, and a diisocyanate compound. A refrigerant-resistant insulated wire characterized in that an insulating coating layer B is formed by extrusion coating with a coating thickness of 1.5 mm or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP91108820A EP0459459A1 (en) | 1990-05-31 | 1991-05-29 | Electrically insulating polyurethane resin shaped article |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2-141911 | 1990-05-31 | ||
| JP14191190 | 1990-05-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0473815A true JPH0473815A (en) | 1992-03-09 |
Family
ID=15303032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27693690A Pending JPH0473815A (en) | 1990-05-31 | 1990-10-16 | Refrigerant resistant insulated wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0473815A (en) |
-
1990
- 1990-10-16 JP JP27693690A patent/JPH0473815A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3555113A (en) | Blends of polymeric amide-imide-ester wire enamels and conductors insulated therewith | |
| US4420536A (en) | Self-bonding magnet wire | |
| WO2007114257A1 (en) | Multilayer insulated electric wire | |
| US20010010269A1 (en) | Multilayer insulated wire and transformer using the same | |
| CA1179216A (en) | Power insertable polyamide-imide coated magnet wire | |
| CN101246763A (en) | Heat bonding compound lacquered copper wire | |
| JPH0473815A (en) | Refrigerant resistant insulated wire | |
| US4480007A (en) | Enamel having improved coatability and insulated electrical articles produced therefrom | |
| DE60314528T2 (en) | METHOD FOR PRODUCING A MODIFIED DIISOCYANATE, PROCESS FOR PREPARING A SELF-LUBRICATING EMAILLELACK, METHOD FOR PRODUCING A PAINT-ISOLATED ELECTRIC LADDER | |
| WO2015121999A1 (en) | Insulated wire, rotary electric machinery, and method for producing insulated wire | |
| EP1026187A1 (en) | Stoving lacquer | |
| US4346136A (en) | Bondable magnet wire comprising polyamide-imide coating containing residual solvent | |
| KR100561095B1 (en) | Insulated wire of several floor | |
| US4404331A (en) | Enamel having improved coatability and insulated electrical articles produced therefrom | |
| KR20060035119A (en) | Polybutylene terephthalate resin composition and multi-layer insulating electric wire comprising the same | |
| US4324837A (en) | Self-bonding magnet wire | |
| JP2010031101A (en) | Polyamideimide resin coating and insulated electric wire using it | |
| KR100368571B1 (en) | Modified polyester resin for insulated wire and multilayered insulated wire prepared by using them | |
| US20240088737A1 (en) | Magent wire with high partial discharge inception voltage (pdiv) | |
| US4485127A (en) | Enamel having improved coatability and insulated electrical articles produced therefrom | |
| KR20080013076A (en) | Insulating varnish composition containing polyamideimide and insulated wire containing insulated layer coated thereof | |
| JPH093367A (en) | Composition for electrical insulation and insulated wire | |
| JP3737913B2 (en) | Insulated wire | |
| JPH07141933A (en) | Manufacture of rectangular insulating electric wire | |
| JPH06283033A (en) | Insulated wire and insulating tube |