JPH07122140A - Flame-retardant insulated wire manufacturing method - Google Patents
Flame-retardant insulated wire manufacturing methodInfo
- Publication number
- JPH07122140A JPH07122140A JP5264804A JP26480493A JPH07122140A JP H07122140 A JPH07122140 A JP H07122140A JP 5264804 A JP5264804 A JP 5264804A JP 26480493 A JP26480493 A JP 26480493A JP H07122140 A JPH07122140 A JP H07122140A
- Authority
- JP
- Japan
- Prior art keywords
- flame
- polyolefin
- insulated wire
- peroxide
- retardant insulated
- 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.)
- Granted
Links
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 239000003063 flame retardant Substances 0.000 title claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 229920000098 polyolefin Polymers 0.000 claims abstract description 24
- 239000000203 mixture Substances 0.000 claims abstract description 15
- 150000002978 peroxides Chemical class 0.000 claims abstract description 14
- 229910000000 metal hydroxide Inorganic materials 0.000 claims abstract description 13
- 150000004692 metal hydroxides Chemical class 0.000 claims abstract description 13
- 229920000642 polymer Polymers 0.000 claims abstract description 11
- 239000004020 conductor Substances 0.000 claims abstract description 5
- 238000004898 kneading Methods 0.000 claims description 6
- 238000000354 decomposition reaction Methods 0.000 claims description 3
- 229910044991 metal oxide Inorganic materials 0.000 claims description 2
- 150000004706 metal oxides Chemical class 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 abstract description 15
- 229910052736 halogen Inorganic materials 0.000 abstract description 7
- 150000002367 halogens Chemical class 0.000 abstract description 7
- 238000002485 combustion reaction Methods 0.000 abstract description 4
- 238000001125 extrusion Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229920000915 polyvinyl chloride Polymers 0.000 description 3
- 239000004800 polyvinyl chloride Substances 0.000 description 3
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- 229920001179 medium density polyethylene Polymers 0.000 description 2
- 239000004701 medium-density polyethylene Substances 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- -1 polyethylene, ethylene ethyl acrylate copolymer Polymers 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- UBRWPVTUQDJKCC-UHFFFAOYSA-N 1,3-bis(2-tert-butylperoxypropan-2-yl)benzene Chemical compound CC(C)(C)OOC(C)(C)C1=CC=CC(C(C)(C)OOC(C)(C)C)=C1 UBRWPVTUQDJKCC-UHFFFAOYSA-N 0.000 description 1
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- 206010000060 Abdominal distension Diseases 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 208000024330 bloating Diseases 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 229960001545 hydrotalcite Drugs 0.000 description 1
- 229910001701 hydrotalcite Inorganic materials 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229920001862 ultra low molecular weight polyethylene Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Processes Specially Adapted For Manufacturing Cables (AREA)
- Organic Insulating Materials (AREA)
- Insulated Conductors (AREA)
Abstract
(57)【要約】
【目的】 燃焼時に腐食性の高いハロゲン系ガスを発生
せず、かつ難燃性および耐摩耗性に優れた難燃絶縁電線
を製造することを可能とする。
【構成】 ポリオレフィンとカルボン酸変性ポリオレフ
ィンのブレンドポリマに金属水酸化物およびパーオキサ
イドを添加してなる組成物を混練し、これを導体外周に
押出成形する。(57) [Summary] [Purpose] It is possible to produce a flame-retardant insulated wire that does not generate a highly corrosive halogen-based gas during combustion and is excellent in flame retardancy and abrasion resistance. [Structure] A composition obtained by adding a metal hydroxide and a peroxide to a blend polymer of a polyolefin and a carboxylic acid-modified polyolefin is kneaded, and this is extruded on the outer periphery of a conductor.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、難燃性および耐摩耗性
に優れた難燃絶縁電線の製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a flame-retardant insulated wire having excellent flame retardancy and abrasion resistance.
【０００２】[0002]
【従来の技術】近年、乗用車を中心に自動車の高性能、
高機能化に伴い、電気、電子回路も増えることによりワ
イヤーハーネスも肥大化する傾向にある。2. Description of the Related Art In recent years, the high performance of automobiles, especially passenger cars,
As the number of electric and electronic circuits increases, the wiring harness tends to grow in size as the functionality increases.
【０００３】このようにワイヤーハーネスが肥大化する
と、配線スペースの増大、重量およびコストの増加など
の弊害を生じる。そのため、肥大化に対する対策が要望
されるようになり、この一環としてワイヤーハーネス電
線の細径、薄肉化が検討され、実際ポリ塩化ビニル絶縁
電線では芯線径および絶縁厚の低減による細径、薄肉化
が図られるようになってきた。The enlargement of the wire harness in this manner causes problems such as an increase in wiring space, an increase in weight and cost. As a result, measures against bloating have been demanded, and as a part of this, thinning and thinning of wire harness electric wires are being considered.In fact, in PVC insulated wires, thinning and thinning are achieved by reducing the core wire diameter and insulation thickness. Has come to be planned.
【０００４】[0004]
【発明が解決しようとする課題】ところで、最近、地球
環境の保全が世界的課題として注目を浴びるようにな
り、自動車に代表される広範囲の分野で資源や加工品の
リサイクル化、産業廃棄物処理が地球レベルで重大視さ
れるようになってきた。このため、自動車用ワイヤハー
ネス電線に使用するポリ塩化ビニルに対しても、燃焼
時、腐食性の高いハロゲン系ガスが発生するため地球環
境汚染源の一つとして問題視されるようになってきた。
このような社会的動向から、腐食性ガスの発生が少ない
ノンハロゲン難燃材料が注目されている。By the way, recently, the preservation of the global environment has been attracting attention as a global issue, and recycling of resources and processed products, industrial waste treatment in a wide range of fields represented by automobiles. Has come to be regarded as important at the global level. For this reason, polyvinyl chloride used for wire harness wires for automobiles has become a problem as one of the global environmental pollution sources because halogen gas which is highly corrosive is generated during combustion.
From such social trends, attention has been paid to non-halogen flame-retardant materials that generate little corrosive gas.
【０００５】このノンハロゲン難燃材料としては、電気
絶縁性に優れたポリオレフィンに金属水酸化物を混和し
て難燃性を付与する組成物が研究されている。しかし、
このポリオレフィンに金属水酸化物を混和するノンハロ
ゲン難燃材料では従来のポリ塩化ビニルに比べ強靭性が
劣り、特に耐摩耗性が悪かった。As the non-halogen flame-retardant material, a composition in which a metal hydroxide is mixed with a polyolefin having an excellent electric insulating property to impart flame retardancy has been studied. But,
The halogen-free flame-retardant material in which a metal hydroxide is mixed with this polyolefin has inferior toughness as compared with conventional polyvinyl chloride, and particularly has poor wear resistance.
【０００６】そこで、本発明の目的は、前記した課題を
解消し、燃焼時に腐食性の高いハロゲン系ガスを発生せ
ず、かつ難燃性および耐摩耗性に優れた難燃絶縁電線の
製造方法を提供することにある。Therefore, an object of the present invention is to solve the above problems, to produce a flame-retardant insulated wire which does not generate a highly corrosive halogen-based gas at the time of combustion, and has excellent flame retardancy and abrasion resistance. To provide.
【０００７】[0007]
【課題を解決するための手段】前記目的を達成するため
に、本発明の難燃絶縁電線の製造方法は、ポリオレフィ
ンとカルボン酸変性ポリオレフィンのブレンドポリマに
金属水酸化物およびパーオキサイドを添加してなる組成
物を混練し、これを導体外周に押出成形するものであ
る。また、前記混練をパーオキサイドの分解温度以上で
行うことが好ましい。さらに、前記ポリオレフィンとカ
ルボン酸変性ポリオレフィンのブレンド比が重量比で95
／5 〜60／40であることが好ましい。さらにまた、前記
金属酸化物およびパーオキサイドの添加量が、ブレンド
ポリマ 100重量部に対して30〜100重量部および 0.1〜
0.6 重量部であることが好ましい。In order to achieve the above object, a method for producing a flame-retardant insulated wire according to the present invention comprises adding a metal hydroxide and a peroxide to a blend polymer of a polyolefin and a carboxylic acid-modified polyolefin. The following composition is kneaded and extruded on the outer circumference of the conductor. Further, it is preferable that the kneading is performed at a decomposition temperature of peroxide or higher. Further, the blending ratio of the polyolefin and the carboxylic acid-modified polyolefin is 95 by weight.
It is preferably / 5 to 60/40. Furthermore, the addition amount of the metal oxide and the peroxide is 30 to 100 parts by weight and 0.1 to 100 parts by weight with respect to 100 parts by weight of the blend polymer.
It is preferably 0.6 parts by weight.
【０００８】[0008]
【作用】ポリオレフィンに金属水酸化物を添加するだけ
では耐摩耗性が悪いが、カルボン酸変性ポリオレフィン
が存在するポリマに金属水酸化物を添加することによ
り、カルボン酸変性ポリオレフィンのカルボン酸と金属
水酸化物の水酸基とが反応し、この反応により耐摩耗性
が改良される。その上パーオキサイドによるミクロゲル
が形成されて、さらに耐摩耗性が向上する。従って、ポ
リオレフィンとカルボン酸変性ポリオレフィンのブレン
ドポリマに金属水酸化物およびパーオキサイドを添加す
ることにより耐摩耗性を大幅に向上させることができ、
これにより、難燃性および耐摩耗性に優れた難燃絶縁電
線を製造することが可能となる。また、この難燃絶縁電
線は燃焼時に腐食性、毒性の高いハロゲン系ガスを発生
しないため、地球環境保全にも有効である。[Function] Although abrasion resistance is poor only by adding a metal hydroxide to a polyolefin, by adding a metal hydroxide to a polymer in which a carboxylic acid-modified polyolefin is present, the carboxylic acid and the metal water of the carboxylic acid-modified polyolefin are added. The hydroxyl groups of the oxide react with each other, and this reaction improves wear resistance. In addition, a microgel of peroxide is formed, and wear resistance is further improved. Therefore, it is possible to significantly improve the wear resistance by adding a metal hydroxide and a peroxide to a blend polymer of a polyolefin and a carboxylic acid-modified polyolefin,
This makes it possible to manufacture a flame-retardant insulated wire having excellent flame retardancy and abrasion resistance. Further, since this flame-retardant insulated wire does not generate a highly corrosive and highly toxic halogen-based gas when burned, it is also effective for global environment conservation.
【０００９】本発明で用いるポリオレフィンとしては、
低密度ポリエチレン，中密度ポリエチレン，高密度ポリ
エチレン，超低密度ポリエチレン，エチレンエチルアク
リレートコポリマ，エチレン酢酸ビニルコポリマ等とい
ったポリマがあげられ、これらを２種以上併用してもよ
い。このポリオレフィンに添加するカルボン酸変性ポリ
オレフィンとは、低密度ポリエチレン，中密度ポリエチ
レン，高密度ポリエチレン，ポリエチレン，エチレンエ
チルアクリレートコポリマ，エチレン酢酸ビニルコポリ
マに代表されるポリオレフィンにカルボン酸をグラフト
または共重合したものであり、カルボン酸としては無水
マレイン酸が代表的である。The polyolefin used in the present invention is
Polymers such as low-density polyethylene, medium-density polyethylene, high-density polyethylene, ultra-low-density polyethylene, ethylene ethyl acrylate copolymer, ethylene vinyl acetate copolymer and the like can be mentioned, and two or more kinds thereof may be used in combination. The carboxylic acid-modified polyolefin to be added to this polyolefin is a polyolefin represented by low density polyethylene, medium density polyethylene, high density polyethylene, polyethylene, ethylene ethyl acrylate copolymer, ethylene vinyl acetate copolymer or the like, which is grafted or copolymerized with carboxylic acid. And maleic anhydride is a typical carboxylic acid.
【００１０】ポリオレフィンとカルボン酸変性ポリオレ
フィンの比率は95／5 〜60／40の重量比であることが好
ましく、限定値未満では目的とする耐摩耗性への効果が
期待できず、また限定値を越えると金属への粘着が著し
く、混練性や押出加工性が大幅に低下する。The ratio of the polyolefin to the carboxylic acid-modified polyolefin is preferably a weight ratio of 95/5 to 60/40. If the ratio is less than the limit value, the desired effect on abrasion resistance cannot be expected, and the limit value is not limited. If it exceeds the range, the adhesion to the metal is remarkable, and the kneading property and the extrusion processability are significantly reduced.
【００１１】金属水酸化物としては、水酸化アルミニウ
ム，水酸化マグネシウム，ハイドロタルサイト，塩基性
硫酸マグネシウム、炭酸マグネシウム等があげられ、こ
れらを２種以上併用してもよい。また、金属水酸化物
は、シランカップリング剤，チタネートカップリング
剤，脂肪酸，脂肪酸金属塩等の表面処理剤で表面処理し
たものを用いるのが好ましい。Examples of the metal hydroxide include aluminum hydroxide, magnesium hydroxide, hydrotalcite, basic magnesium sulfate, magnesium carbonate and the like, and two or more of them may be used in combination. The metal hydroxide is preferably surface-treated with a surface-treating agent such as a silane coupling agent, a titanate coupling agent, a fatty acid or a fatty acid metal salt.
【００１２】金属水酸化物の添加量は、ブレンドポリマ
100重量部に対して30〜100 重量部であることが好まし
く、限定値未満では目的とする難燃性を付与できず、ま
た限定値を越えると耐摩耗性が著しく低下する。The amount of metal hydroxide added depends on the blend polymer.
It is preferably 30 to 100 parts by weight with respect to 100 parts by weight, and if it is less than the specified value, the desired flame retardancy cannot be imparted, and if it exceeds the specified value, the abrasion resistance is significantly reduced.
【００１３】パーオキサイドとしては、ジクミルパーオ
キサイド、１，３−ビス（第三ブチルペルオキシイソプ
ロピル）ベンゼン、２，５−ジメチル−２，５（第三ブ
チルペルオキシ）ヘキシン−３等があげられ、これらを
２種以上併用してもよい。Examples of the peroxide include dicumyl peroxide, 1,3-bis (tertiary butylperoxyisopropyl) benzene, 2,5-dimethyl-2,5 (tertiary butylperoxy) hexyne-3, and the like. You may use these 2 or more types together.
【００１４】パーオキサイドの添加量は、ブレンドポリ
マ 100重量部に対して 0.1〜0.6 重量部であることが好
ましく、限定値未満では目的とする耐摩耗性への効果は
見られず、また限定値を越えるとポリマのゲル化が進み
過ぎ押出加工性が著しく低下する。The amount of the peroxide added is preferably 0.1 to 0.6 parts by weight with respect to 100 parts by weight of the blended polymer, and if the amount is less than the specified value, the desired effect on the wear resistance is not observed, and the specified value is limited. If it exceeds, gelation of the polymer will proceed excessively and extrusion processability will be markedly reduced.
【００１５】組成物を混練するには押出機や混練機等を
用いて行い、その混練はパーオキサイドの分解温度以上
で行うことが好ましく、限定値未満では目的とする耐摩
耗性への効果は見られない。The composition is kneaded by using an extruder, a kneader or the like, and the kneading is preferably carried out at a decomposition temperature of peroxide or higher, and if it is less than the limited value, the intended effect on abrasion resistance is not achieved. can not see.
【００１６】尚、本発明では前記成分の他に、架橋剤，
安定剤，難燃助剤，滑剤，着色剤等を適宜添加してもよ
い。In the present invention, in addition to the above components, a crosslinking agent,
Stabilizers, flame retardant aids, lubricants, colorants, etc. may be added as appropriate.
【００１７】[0017]
【実施例】以下、本発明の実施例を説明する。EXAMPLES Examples of the present invention will be described below.
【００１８】先ず、表１の実施例１〜４および比較例１
〜５の各欄に示す配合成分に従って各種成分を 180℃に
設定した30ｍｍ２軸押出機で混練して組成物を形成し、
その後、これら組成物を 220℃に設定した40ｍｍ押出機
を用いて芯線外径 1.8φの銅導体上に0.20ｍｍの厚さで
押出被覆して、各種絶縁電線を作製した。First, Examples 1 to 4 and Comparative Example 1 in Table 1
To form a composition by kneading the various components in accordance with the compounding components shown in each column of 5 through a 30 mm twin-screw extruder set at 180 ° C.
After that, these compositions were extrusion-coated with a thickness of 0.20 mm on a copper conductor having a core wire outer diameter of 1.8φ using a 40 mm extruder set at 220 ° C. to produce various insulated wires.
【００１９】次に、このようにして作製した各種電線
（試料）について以下に示す評価（押出外観、耐摩耗性
および難燃性）を行い、その結果を表１の下欄に示す。Next, the following evaluations (extrusion appearance, abrasion resistance and flame retardancy) were carried out on the various electric wires (samples) thus produced, and the results are shown in the lower column of Table 1.
【００２０】(1)押出外観 目視観察により押出表面が平滑なものを良、凹凸の著し
いものを悪とした。(1) Appearance of Extrusion As visually observed, those having a smooth extrusion surface were evaluated as good, and those having remarkable unevenness were evaluated as bad.
【００２１】(2)耐摩耗性 ＪＩＳ Ｃ ３４０６に準拠し、図１に示すように各種
試料について荷重1350ｇで導体露出までの摩耗テープの
長さを求めた。尚、図１中の単位はｍｍである。１試料
につき８点測定を行い、その平均値を求め、平均値以下
の測定値を再平均した値を示した。(2) Abrasion resistance According to JIS C 3406, the length of the abrasion tape until the conductor was exposed was determined for each sample under a load of 1350 g as shown in FIG. The unit in FIG. 1 is mm. Eight points were measured for each sample, the average value was obtained, and the measured values below the average value were re-averaged.
【００２２】(3)難燃性 日本自動車規格（ＪＡＳＯ）Ｄ６０８−８７に準拠し、
試料 300ｍｍを水平に支持し、これにブンゼンバーナの
還元炎を10秒間当てた後の残炎時間を測定し、残炎時間
が30秒以内を合格、30秒を越えるものを不合格と判定し
た。(3) Flame retardance According to Japanese Automotive Standard (JASO) D608-87,
A 300 mm sample was supported horizontally, and the afterflame time after applying a reducing flame of Bunsen burner for 10 seconds was measured, and the afterflame time was judged to be within 30 seconds and rejected if it exceeded 30 seconds. .
【００２３】[0023]
【表１】 [Table 1]
【００２４】表１からも明らかなように、本発明にかか
る実施例１〜４の試料では、いずれも押出外観が良好
で、耐摩耗性はＪＩＳ Ｃ ３４０６の規格値30.5ｃｍ
以上を満足し、かつ難燃性試験にも合格する。これに対
して、カルボン酸変性ポリオレフィンを含まない比較例
１は耐摩耗性が低く規格値を満足しない。金属水酸化物
の添加量が限定値未満の比較例２は難燃性が不十分であ
る。金属水酸化物の添加量が限定値を越える比較例３お
よびパーオキサイドの添加量が限定値未満の比較例４は
いずれも耐摩耗性が低く、また、パーオキサイドの添加
量が限定値を越える比較例５は押出外観が悪く、それに
伴い耐摩耗性も著しく低下する。As is clear from Table 1, the samples of Examples 1 to 4 according to the present invention all have good extrusion appearance and wear resistance of JIS C 3406 standard value 30.5 cm.
Satisfies the above and passes the flame retardancy test. In contrast, Comparative Example 1 containing no carboxylic acid-modified polyolefin has low abrasion resistance and does not satisfy the standard value. Comparative Example 2 in which the added amount of the metal hydroxide is less than the limited value has insufficient flame retardancy. In Comparative Example 3 in which the amount of metal hydroxide added exceeds the limit value and in Comparative Example 4 in which the amount of peroxide addition is less than the limit value, wear resistance is low, and the amount of peroxide exceeds the limit value. In Comparative Example 5, the extruded appearance is poor, and the abrasion resistance is significantly reduced accordingly.
【００２５】[0025]
【発明の効果】以上要するに本発明によれば、燃焼時に
腐食性、毒性の高いハロゲン系ガスを発生せず、かつ難
燃性および耐摩耗性に優れた難燃絶縁電線を製造できる
という優れた効果を奏する。In summary, according to the present invention, it is possible to produce a flame-retardant insulated wire which does not generate a highly corrosive and highly toxic halogen-based gas at the time of combustion and is excellent in flame retardancy and abrasion resistance. Produce an effect.
【図１】耐摩耗試験の一例を示す図である。FIG. 1 is a diagram showing an example of an abrasion resistance test.
Claims (4)
レフィンのブレンドポリマに金属水酸化物およびパーオ
キサイドを添加してなる組成物を混練し、これを導体外
周に押出成形することを特徴とする難燃絶縁電線の製造
方法。1. A flame-retardant insulated electric wire characterized by kneading a composition obtained by adding a metal hydroxide and a peroxide to a blend polymer of a polyolefin and a carboxylic acid-modified polyolefin and extruding the kneaded composition on the outer circumference of the conductor. Manufacturing method.
度以上で行うことを特徴とする請求項１記載の難燃絶縁
電線の製造方法。2. The method for producing a flame-retardant insulated wire according to claim 1, wherein the kneading is performed at a decomposition temperature of the peroxide or higher.
リオレフィンのブレンド比が重量比で95／5 〜60／40で
ある請求項１又は２記載の難燃絶縁電線の製造方法。3. The method for producing a flame-retardant insulated wire according to claim 1, wherein the blending ratio of the polyolefin and the carboxylic acid-modified polyolefin is 95/5 to 60/40 by weight.
添加量が、ブレンドポリマ 100重量部に対して30〜100
重量部および 0.1〜0.6 重量部である請求項１乃至３の
いずれかに記載の難燃絶縁電線の製造方法。4. The addition amount of the metal oxide and the peroxide is 30 to 100 relative to 100 parts by weight of the blend polymer.
The method for producing a flame-retardant insulated wire according to any one of claims 1 to 3, wherein the content is 0.1 part by weight and 0.1 to 0.6 part by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26480493A JP3265760B2 (en) | 1993-10-22 | 1993-10-22 | Manufacturing method of flame-retardant insulated wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26480493A JP3265760B2 (en) | 1993-10-22 | 1993-10-22 | Manufacturing method of flame-retardant insulated wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07122140A true JPH07122140A (en) | 1995-05-12 |
| JP3265760B2 JP3265760B2 (en) | 2002-03-18 |
Family
ID=17408452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26480493A Expired - Lifetime JP3265760B2 (en) | 1993-10-22 | 1993-10-22 | Manufacturing method of flame-retardant insulated wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3265760B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09171721A (en) * | 1995-12-20 | 1997-06-30 | Hitachi Cable Ltd | Flame-retardant insulated wire |
-
1993
- 1993-10-22 JP JP26480493A patent/JP3265760B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09171721A (en) * | 1995-12-20 | 1997-06-30 | Hitachi Cable Ltd | Flame-retardant insulated wire |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3265760B2 (en) | 2002-03-18 |
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