JP2800193B2 - Flame retardant small diameter insulated wire - Google Patents
Flame retardant small diameter insulated wireInfo
- Publication number
- JP2800193B2 JP2800193B2 JP63227979A JP22797988A JP2800193B2 JP 2800193 B2 JP2800193 B2 JP 2800193B2 JP 63227979 A JP63227979 A JP 63227979A JP 22797988 A JP22797988 A JP 22797988A JP 2800193 B2 JP2800193 B2 JP 2800193B2
- Authority
- JP
- Japan
- Prior art keywords
- flame
- flame retardant
- retardant
- insulated wire
- polyethylene
- 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.)
- Expired - Lifetime
Links
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- Organic Insulating Materials (AREA)
- Insulated Conductors (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ この発明は、薄肉細径の難燃性絶縁電線に関する。Description: FIELD OF THE INVENTION The present invention relates to a thin and small-diameter flame-retardant insulated wire.
［従来の技術］ 電気機器・電子機器の小型化・省スペース化が近年著
しく進歩している。さらにこれらの小型化を進めるため
には、そこに使われる電線・ケーブルも細径化すること
が重要となってくる。[Prior Art] In recent years, miniaturization and space saving of electric and electronic devices have been remarkably advanced. In order to further reduce the size, it is important to reduce the diameter of the wires and cables used therein.
電線の細径化には、導体を細く絶縁体厚を薄くできれ
ばよい。また、電線の難燃化を電気機器・電子機器用の
電線にとって重要である。さらに電気絶縁性，誘電率，
絶縁破壊強さ等の電気特性と、耐摩耗性に代表される機
械的特性を満足させる必要がある。In order to reduce the diameter of the electric wire, it is sufficient if the conductor can be made thinner and the insulator thickness can be made thinner. In addition, flame retardancy of electric wires is important for electric and electronic devices. In addition, electrical insulation, dielectric constant,
It is necessary to satisfy electrical characteristics such as dielectric breakdown strength and mechanical characteristics such as wear resistance.
通常の1mmφ以上の電線の絶縁体材料としては、誘電
率が小さく電気特性に優れたポリエチレンを難燃化した
材料が使用されている。そして、電気機器・電子機器用
の電線は、配線作業が容易でなければならないので可撓
性のある電線が望まれる。例えば、これまで低密度ポリ
エチレンにハロゲン系難燃剤と三酸化アンチモンを添加
する難燃性絶縁組成物が一般的に利用される。As an insulator material of an ordinary wire having a diameter of 1 mmφ or more, a material obtained by flame retarding polyethylene having a small dielectric constant and excellent electric characteristics is used. Since electric wires for electric and electronic devices must be easily wired, flexible electric wires are desired. For example, a flame-retardant insulating composition in which a halogen-based flame retardant and antimony trioxide are added to low-density polyethylene has been generally used.
しかし、外径1mmφ以下で、しかも絶縁厚が200μｍ以
下の細径薄肉電線を製造したところ、次に示す欠点が明
らかとなった。However, when a thin and thin electric wire having an outer diameter of 1 mmφ or less and an insulation thickness of 200 μm or less was manufactured, the following defects became apparent.
まず、絶縁破壊を起こす確率が極めて増加した。ま
た、電線の耐摩耗性が著しく低下した。First, the probability of dielectric breakdown has increased significantly. Also, the wear resistance of the electric wire was significantly reduced.
［発明が解決しようとする課題］ 従来技術を用いた外径1mmφ以下の細径、かつ、絶縁
厚200μｍ以下の難燃性の薄肉電線においては、上述の
ように耐電圧特性，耐摩耗性に欠点がある。[Problems to be Solved by the Invention] In the case of a flame-retardant thin electric wire with an outer diameter of 1 mmφ or less and an insulation thickness of 200 μm or less using the conventional technology, the withstand voltage characteristics and abrasion resistance are as described above. There are drawbacks.
この発明は、このような点に鑑みてなされたもので、
前記した従来技術の欠点を解消した細径の薄肉電線を提
供することを目的とする。The present invention has been made in view of such a point,
An object of the present invention is to provide a thin electric wire having a small diameter, which has solved the above-mentioned disadvantages of the conventional technology.
［課題を解決するための手段および作用］ この発明は、降伏点応力が150kg/cm2以上、かつ、融
点が115℃以上のボリエチレンに、ハロゲン系難燃剤10
〜16重量％と無機系難燃助剤５〜12重量％を混和するこ
とにあり、これによって電気特性（誘電率の小さい）に
優れた難燃性細径薄肉電線の製造を可能としたものであ
る。[Means and Actions for Solving the Problems] The present invention relates to a polyethylene having a yield point stress of 150 kg / cm 2 or more and a melting point of 115 ° C. or more.
~ 16 wt% and 5-12 wt% inorganic flame retardant aid, which enables the production of flame-retardant thin-walled wires with excellent electrical properties (low dielectric constant). It is.
［実 施 例］ この発明において、降伏点応力が150kg/cm2以上、か
つ、115℃以上の融点を有するポリエチレンを用いるこ
とは、耐摩耗性向上に著しく効果的である。降伏点応力
および融点が上記の値を満たさないポリエチレンは耐摩
耗性が劣る。これは多分薄肉材料の摩耗性は機械的強度
と共に摩擦熱に対する抵抗性も必要なためと考えられ
る。当然、降伏点応力または融点のいずれかの条件が上
記の値を満たない場合も耐摩耗性は劣る。[Embodiment] In the present invention, the use of polyethylene having a yield point stress of 150 kg / cm 2 or more and a melting point of 115 ° C. or more is extremely effective in improving wear resistance. Polyethylene whose yield point stress and melting point do not satisfy the above-mentioned values has poor abrasion resistance. This is probably because the abrasion of the thin material requires not only mechanical strength but also resistance to frictional heat. Naturally, when either the condition of the yield point stress or the melting point does not satisfy the above value, the wear resistance is inferior.
ハロゲン化難燃剤としては臭素系難燃剤のヘキサブロ
モビフェニルエーテル，デカブロモビフェニルエーテ
ル，ヘキサブロモシクロドデカン，ビス（ブロモエチル
エーテル）テトラブロモビスフェノールA,ヘキサブロモ
ベンゼン，ヘキサブロモビフェニル，テトラブロモビス
フェノールS,ヘキサブロモベンゼン，ピロガードSP103
（第１工業製薬（株）製），ピロガードSP700（第１工
業製薬（株）製），ファイヤガード3000（帝人化成
（株）製），サイテックスBT93（サイテックス社製）
等、また、塩素系難燃剤のデクロランプラス315,デクロ
ランプラス25,デクロランプラス2520,デクロラン603,デ
クロラン604（フッカケミカル社製）等が挙げられる
が、これらに限るもではない。ただし、塩素化パラフィ
ン，塩素化ポリエチレンは除く。Halogenated flame retardants include brominated flame retardants such as hexabromobiphenyl ether, decabromobiphenyl ether, hexabromocyclododecane, bis (bromoethyl ether) tetrabromobisphenol A, hexabromobenzene, hexabromobiphenyl, and tetrabromobisphenol S. Hexabromobenzene, Pyrogard SP103
(Daiichi Kogyo Seiyaku Co., Ltd.), Pyroguard SP700 (Daiichi Kogyo Seiyaku Co., Ltd.), Fireguard 3000 (Teijin Kasei Co., Ltd.), Cytex BT93 (Cytex Co., Ltd.)
And chlorine-based flame retardants dechlorane plus 315, dechlorane plus 25, dechlorane plus 2520, dechlorane 603, and dechlorane 604 (manufactured by Fukka Chemical Co., Ltd.), but are not limited thereto. However, chlorinated paraffin and chlorinated polyethylene are excluded.
無機難燃助剤としては三酸化アンチモン，五酸化アン
チモン，シリカ,NaSbO3,酸化スズ，水酸化スズ，酸化モ
リブテン，モリブテン酸アンモニウム，酸化ジルコニウ
ム，水酸化ジルコニウム等が挙げられる。Examples of the inorganic flame retardant aid include antimony trioxide, antimony pentoxide, silica, NaSbO 3 , tin oxide, tin hydroxide, molybdenum oxide, ammonium molybdate, zirconium oxide, and zirconium hydroxide.
ハロゲン系難燃剤と無機系難燃助剤は併用して用い
る。そしてハロゲン系難燃剤10〜16重量％と無機系難燃
助剤５〜12重量％の範囲で上述したポリエチレンに混和
する必要がある。The halogen-based flame retardant and the inorganic flame retardant are used in combination. It is necessary to mix 10 to 16% by weight of the halogen-based flame retardant and 5 to 12% by weight of the inorganic flame-retardant aid with the above-mentioned polyethylene.
ハロゲン系難燃剤及び無機系難燃助剤の混和量が前記
の上限値を上回ると耐摩耗性及び耐電圧性が低下し、ま
た、前記の下限値を下回ると難燃性が損なわれてしま
う。難燃剤は好ましくは粒径10μｍ以下が好ましい。If the blending amount of the halogen-based flame retardant and the inorganic flame-retardant auxiliary exceeds the above upper limit, the wear resistance and the voltage resistance will be reduced, and if it is less than the above lower limit, the flame retardancy will be impaired. . The flame retardant preferably has a particle size of 10 μm or less.
以下、この発明の具体的な実施例および比較例を説明
する。外径0.102mmのスズメッキ銅線を７本撚り合わせ
た導体上に40mm押出機を用いて第１表の実施例１〜６お
よび比較例１〜５に示す組成の難燃ポリエチレンコンパ
ウンドを、絶縁厚130μｍとなるように押出被覆し、外
径0.5mmφの電線を作製し各試料とした。用いたポリエ
チレンおよび難燃剤を第１表に纏めて示す。ポリエチレ
ンについては降伏点応力、融点の測定結果も合せて示し
た。Hereinafter, specific examples and comparative examples of the present invention will be described. Using a 40 mm extruder, a flame-retardant polyethylene compound having the composition shown in Examples 1 to 6 and Comparative Examples 1 to 5 of Table 1 was placed on a conductor obtained by twisting seven tin-plated copper wires having an outer diameter of 0.102 mm, and insulating thickness was measured. It was extruded and coated so as to have a thickness of 130 μm, and an electric wire having an outer diameter of 0.5 mmφ was prepared and used as each sample. Table 1 summarizes the polyethylenes and flame retardants used. For polyethylene, the measurement results of yield point stress and melting point are also shown.
即ち、降伏点応力の測定は、JIS K−6760ポリエチレ
ンの試験方法に準じて行なった。That is, the yield point stress was measured according to the test method of JIS K-6760 polyethylene.
融点の測定は、パーキンエルマ社の示差走査熱量計DS
C II形により昇温速度10℃／分で測定し、得られた吸熱
ピークの位置で判定した。The melting point was measured using PerkinElmer's differential scanning calorimeter DS.
The measurement was performed at a heating rate of 10 ° C./min using Form C II, and the endothermic peak position was determined.
耐摩耗性試験は、第１図に示す装置により行なった。
即ち、500gの荷重１が4mmφの棒状のピン電極２を上か
ら押圧し、これを各試料である水平に載置された絶縁体
３を被覆した導体４上を30mmの区間を60回／分で往復さ
せて、ピン電極２と導体４が短絡するまでの回数によっ
て判定するものである。The abrasion resistance test was performed using the apparatus shown in FIG.
That is, a 500 g load 1 presses a rod-shaped pin electrode 2 having a diameter of 4 mm from above, and presses the rod-shaped pin electrode 2 on a conductor 4 covered with a horizontally placed insulator 3, which is a sample, in a 30 mm section at 60 times / min. And the number of times until the pin electrode 2 and the conductor 4 are short-circuited.
なお、符号５はランプ、６は電池である、この電池６
は正極を被試験体の導体４に、負極をピン電極２に接続
して試験するものである。Reference numeral 5 denotes a lamp and 6 denotes a battery.
The test is performed by connecting the positive electrode to the conductor 4 of the test object and connecting the negative electrode to the pin electrode 2.
耐電圧試験は、第２図に示す方法で行なった。これ
は、水槽８に水９を満たしこの水の中に被試験体である
各試料を浸漬し、電極10から2kVの電圧を印加して絶縁
破壊を測定するものである。The withstand voltage test was performed by the method shown in FIG. In this method, a water tank 8 is filled with water 9, each sample to be tested is immersed in the water, and a voltage of 2 kV is applied from the electrode 10 to measure the dielectric breakdown.
難燃性試験は、第３図に示す方法で行なった。両端を
支持した電線試料12にバーナー13を用いて炎14を当て、
着火した後炎14を取り去り30cmの区間の両端に炎が拡が
る前に自然に消炎するかどうかにより判定するものであ
る。The flame retardancy test was performed by the method shown in FIG. A flame 14 is applied to the wire sample 12 supporting both ends by using a burner 13,
After ignition, the flame 14 is removed, and it is determined whether the flame naturally extinguishes before the flame spreads to both ends of the 30 cm section.
実施例１〜６および比較例1,2に用いたポリエチレン
は降伏点応力が150kg/cm2以上融点が115℃以上のもので
あり、難燃剤量が10〜30重量％の範囲にある。実施例１
〜６の電線は耐摩耗性，耐電圧性，難燃性とも良好な結
果を示している。難燃剤量が６重量％の比較例１の電線
は燃焼してしまい、40重量％の電線は耐摩耗性，耐電圧
性の両方とも損なわれてしまう。The polyethylene used in Examples 1 to 6 and Comparative Examples 1 and 2 has a yield point stress of 150 kg / cm 2 or more and a melting point of 115 ° C. or more, and has a flame retardant content of 10 to 30% by weight. Example 1
The electric wires No. to No. 6 show good results in wear resistance, voltage resistance and flame retardancy. The electric wire of Comparative Example 1 in which the flame retardant amount is 6% by weight burns, and the electric wire of 40% by weight impairs both the wear resistance and the withstand voltage.
また、降伏点応力が150kg/cm2以下または融点が115℃
以下のポリエチレンを用いた場合は摩耗回数が著しく低
下してしまう。Also, the yield point stress is 150 kg / cm 2 or less or the melting point is 115 ° C.
When the following polyethylene is used, the number of times of wear is significantly reduced.
なお、この検討で用いたポリエチレンは実施例１から
順に日本石油化学（株）製のスタフレンＥ−703,E−70
7,リニレックスAM−1720,AF−3710であり、実施例5,6お
よび比較例1,2が三井石油化学（株）製のハイゼックス5
305E,ハイゼックス3300Fである。The polyethylene used in this study was Staphlen E-703, E-70 manufactured by Nippon Petrochemical Co., Ltd. in order from Example 1.
7, Linirex AM-1720, AF-3710, and Examples 5 and 6 and Comparative Examples 1 and 2 were manufactured by Mitsui Petrochemical Co., Ltd.
305E, Hyzex 3300F.
比較例３〜５は日本石油化学（株）製のリニレックス
AF−3310,三井ポリケミカル（株）のミラソン3530およ
び宇部興産（株）のウベB028である。Comparative Examples 3 to 5 are Linirex manufactured by Nippon Petrochemical Co., Ltd.
AF-3310, Mirason 3530 of Mitsui Polychemicals, Inc. and Ube B028 of Ube Industries, Ltd.
難燃剤は実施例５がデカブロモジフェニルエーテルで
ある他はデクロランプラス25である。The flame retardant is dechlorane plus 25 except that Example 5 was decabromodiphenyl ether.
無機難燃助剤は三酸化アンチモンをいずれの場合も使
用した。Antimony trioxide was used as the inorganic flame retardant in each case.
この発明の電線は、電子線等による放射線架橋やパー
オキサイドまたは有機シラン化合物を用いた化学架橋を
行なうとさらに効果的である。The electric wire of the present invention is more effective when it is subjected to radiation crosslinking using an electron beam or the like or chemical crosslinking using a peroxide or an organic silane compound.
［発明の効果］ 以上説明した通り、この発明によれば薄肉の難燃性細
径電線で特に問題となる欠点である耐電圧特性，耐摩耗
性を大幅に向上させることができ、外径1mmφ以下の絶
縁厚200μｍ以下の難燃性電線が製造可能となる。 [Effects of the Invention] As described above, according to the present invention, withstand voltage characteristics and wear resistance, which are drawbacks particularly problematic in a thin-walled flame-retardant thin wire, can be significantly improved, and the outer diameter is 1 mmφ. The following flame-retardant electric wires having an insulation thickness of 200 μm or less can be manufactured.
第１図は、耐摩耗性試験装置の略図である。 第２図は、絶縁破壊試験装置の略図である。 第３図は、難燃性試験の状況の説明図である。 FIG. 1 is a schematic diagram of a wear resistance test apparatus. FIG. 2 is a schematic diagram of a dielectric breakdown test apparatus. FIG. 3 is an explanatory view of the situation of the flame retardancy test.
フロントページの続き (72)発明者 菅波 修一 茨城県日立市日高町５丁目１番１号 日 立電線株式会社日高工場内 (72)発明者 太田 正孝 茨城県日立市日高町５丁目１番１号 日 立電線株式会社日高工場内 (72)発明者 高野 英雄 茨城県日立市日高町５丁目１番１号 日 立電線株式会社日高工場内 (56)参考文献 特開 昭58−59241（ＪＰ，Ａ) 特開 昭63−3043（ＪＰ，Ａ) 特開 昭60−146407（ＪＰ，Ａ) 岡叡太郎他１名編、「プラスチック材 料講座４ポリエチレン樹脂」 （昭44. ８．30）、日刊工業新聞社、Ｐ．102− 105 太田忠尚他２名著、「プラスチック材 料講座11ポリエチレン」 ５版 （昭 40．５．30）、日刊工業新聞社、Ｐ. 124−125 (58)調査した分野(Int.Cl.6，ＤＢ名) H01B 7/02,7/34 H01B 3/44Continuing from the front page (72) Inventor Shuichi Sugamba 5-1-1 Hidaka-cho, Hitachi City, Ibaraki Prefecture Inside the Hidaka Factory, Hitachi Cable Corporation (72) Inventor Masataka Ota 5-1-1 Hidaka-cho, Hitachi City, Ibaraki Prefecture No. 1 Hidaka Electric Wire Co., Ltd. (72) Inventor Hideo Takano 5-1-1, Hidaka-cho, Hitachi City, Ibaraki Prefecture Inside Hidaka Electric Wire Co., Ltd. (56) References JP 58 -59241 (JP, A) JP-A-63-3043 (JP, A) JP-A-60-146407 (JP, A) Eitaro Oka and one other editor, "Plastic Materials Course 4 Polyethylene Resin" (Showa 44. 8.30), Nikkan Kogyo Shimbun, p. 102-105 Tadahisa Ota and two other authors, "Plastic Materials Course 11 Polyethylene", 5th Edition (1405.30), Nikkan Kogyo Shimbun, p. 124-125 (58) Fields surveyed (Int. Cl. 6) , DB name) H01B 7 / 02,7 / 34 H01B 3/44
Claims (1)
る外径1mmφ以下の細径絶縁電線において、降伏点応力
が150kg/cm2以上、かつ、融点が115℃以上のポリエチレ
ンにハロゲン系難燃剤10〜16重量％と無機系難燃助剤５
〜12重量％を含有する組成物で絶縁体を形成してなるこ
とを特徴とする難燃性細径絶縁電線。1. A small-diameter insulated wire having an outer diameter of 1 mm or less having an insulator having a thickness of 200 μm or less on a conductor and having a yield point stress of 150 kg / cm 2 or more and a melting point of 115 ° C. or more. Flame retardant 10-16% by weight and inorganic flame retardant auxiliary 5
A flame-retardant small-diameter insulated wire, wherein an insulator is formed from a composition containing up to 12% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63227979A JP2800193B2 (en) | 1988-09-12 | 1988-09-12 | Flame retardant small diameter insulated wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63227979A JP2800193B2 (en) | 1988-09-12 | 1988-09-12 | Flame retardant small diameter insulated wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0278116A JPH0278116A (en) | 1990-03-19 |
| JP2800193B2 true JP2800193B2 (en) | 1998-09-21 |
Family
ID=16869259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63227979A Expired - Lifetime JP2800193B2 (en) | 1988-09-12 | 1988-09-12 | Flame retardant small diameter insulated wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2800193B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06168627A (en) * | 1992-11-30 | 1994-06-14 | Hitachi Cable Ltd | Thin insulated wire |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60146407A (en) * | 1984-01-09 | 1985-08-02 | 昭和電線電纜株式会社 | Heat resistant wire |
-
1988
- 1988-09-12 JP JP63227979A patent/JP2800193B2/en not_active Expired - Lifetime
Non-Patent Citations (2)
| Title |
|---|
| 太田忠尚他２名著、「プラスチック材料講座１１ポリエチレン」 ５版 （昭４０．５．３０）、日刊工業新聞社、Ｐ．１２４−１２５ |
| 岡叡太郎他１名編、「プラスチック材料講座４ポリエチレン樹脂」 （昭４４．８．３０）、日刊工業新聞社、Ｐ．１０２−１０５ |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0278116A (en) | 1990-03-19 |
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