JPH11140246A - Abrasion resistant flame retarding resin composition, its production and insulated wire - Google Patents
Abrasion resistant flame retarding resin composition, its production and insulated wireInfo
- Publication number
- JPH11140246A JPH11140246A JP30855897A JP30855897A JPH11140246A JP H11140246 A JPH11140246 A JP H11140246A JP 30855897 A JP30855897 A JP 30855897A JP 30855897 A JP30855897 A JP 30855897A JP H11140246 A JPH11140246 A JP H11140246A
- Authority
- JP
- Japan
- Prior art keywords
- resin composition
- weight
- ratio
- polypropylene
- copolymer
- 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.)
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- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ポリオレフィン系
樹脂を主成分とした耐摩耗性難燃樹脂組成物及びその製
造方法並びに絶縁電線に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wear-resistant flame-retardant resin composition containing a polyolefin resin as a main component, a method for producing the same, and an insulated wire.
【０００２】[0002]
【従来の技術】例えば自動車用の絶縁電線に使用される
絶縁被覆材としては、適度な柔軟性や難燃性の面から、
ポリ塩化ビニル樹脂が従来より多く採用されている。と
ころが、この電線は、車両の廃車処分に伴って焼却廃棄
されると、焼却炉内で絶縁被覆が燃えることから塩化水
素ガスを発生し、焼却炉を傷めたり、大気中に排出され
て環境汚染の原因となるという問題点を有している。2. Description of the Related Art For example, as an insulating covering material used for insulated wires for automobiles, from the viewpoint of appropriate flexibility and flame retardancy,
Polyvinyl chloride resin is used more often than ever. However, when this wire is incinerated and disposed of with the scrapping of vehicles, the insulation coating burns in the incinerator, generating hydrogen chloride gas, damaging the incinerator or being discharged into the atmosphere, resulting in environmental pollution. Has the problem of causing
【０００３】そこで、近年、塩素等のハロゲン成分を含
まない難燃性の樹脂組成物を絶縁被覆材として使用する
電線が研究されており、その構成は例えば特開平５−３
０１９９６号公報に示されるように、ポリオレフィン系
樹脂に金属水酸化物を混合したものが一般的である。Therefore, in recent years, an electric wire using a flame-retardant resin composition containing no halogen component such as chlorine as an insulating coating material has been studied.
As shown in JP-A-01996, a mixture of a polyolefin-based resin and a metal hydroxide is generally used.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、従来の
この種の難燃性樹脂組成物では、ポリ塩化ビニルと比べ
ると柔軟性や屈曲性が劣り、しかも、難燃性を与えるた
めに多量の金属水酸化物を混合するため、耐摩耗性や引
張強さ等の機械的強度が低下するという問題があった。However, conventional flame-retardant resin compositions of this type are inferior in flexibility and flexibility as compared with polyvinyl chloride, and have a large amount of metal to impart flame retardancy. There is a problem that the mechanical strength such as abrasion resistance and tensile strength is reduced due to the mixing of the hydroxide.
【０００５】そこで、本発明の目的は、焼却時に有害ガ
スを発生せず、しかも柔軟性や屈曲性に優れるととも
に、十分な難燃性を備えつつ耐摩耗性にも優れる耐摩耗
性難燃性樹脂組成物及びその製造方法並びにその樹脂組
成物を用いた絶縁電線を提供するところにある。Accordingly, an object of the present invention is to provide an abrasion-resistant flame-retardant material which does not generate harmful gas upon incineration, has excellent flexibility and bendability, and has sufficient abrasion resistance while having sufficient flame retardancy. An object of the present invention is to provide a resin composition, a method for producing the same, and an insulated wire using the resin composition.
【０００６】[0006]
【課題を解決するための手段】請求項１の発明に係る耐
摩耗性難燃樹脂組成物は、次の（ａ）〜（ｃ）の成分を
含み、 （ａ）１−ブテンとプロピレンとの共重合体及びポリプ
ロピレンを４０／６０〜２０／８０の割合で混合してな
るアロイ化したポリマー （ｂ）デュロメータ硬さ６０以上のポリオレフィン樹脂 （ｃ）金属水酸化物 （ａ）と（ｂ）との重量比が９５／５〜５０／５０であ
って、（ａ）と（ｂ）との合計１００重量部に対して
（ｃ）が５０〜２００重量部であるところに特徴を有す
る。The abrasion-resistant flame-retardant resin composition according to the first aspect of the present invention comprises the following components (a) to (c): Alloyed polymer obtained by mixing a copolymer and polypropylene at a ratio of 40/60 to 20/80. (B) Polyolefin resin having a durometer hardness of 60 or more. (C) Metal hydroxide (a) and (b) Is a weight ratio of 95/5 to 50/50, and (c) is 50 to 200 parts by weight with respect to 100 parts by weight in total of (a) and (b).
【０００７】また、請求項２の発明に係る耐摩耗性難燃
樹脂組成物の製造方法は、上述の（ａ），（ｃ）の各原
料成分を混練した後に、前記（ｂ）を添加して混練する
ところに特徴を有する。In the method for producing a wear-resistant flame-retardant resin composition according to the second aspect of the present invention, the above-mentioned raw material components (a) and (c) are kneaded, and then the above-mentioned (b) is added. It is characterized by the fact that it is kneaded.
【０００８】そして、請求項３の発明に係る絶縁電線
は、請求項１の発明に係る樹脂組成物を芯線導体の外周
を取り巻くように形成して絶縁被覆としたものである。According to a third aspect of the present invention, there is provided an insulated wire in which the resin composition according to the first aspect of the present invention is formed so as to surround the outer periphery of the core conductor to form an insulating coating.
【０００９】本発明で使用される成分（ａ）のようなア
ロイ化材料は、一般に、一方のポリマー中に他方のポリ
マーが島のように分散した構造をなす。このような材料
は機械的強度が劣るため電線の絶縁被覆には不向きであ
ると考えられており、絶縁被覆ポリマーとして使用する
ことは従来は全く検討されていなかった。しかし、本発
明者は、これに所定硬さのポリオレフィン樹脂を配合す
ると、耐摩耗性と柔軟性とがバランスよく発現して電線
に必要な耐摩耗性と強度が得られることを究明して本発
明に至ったものである。すなわち、成分（ａ）は樹脂組
成物に柔軟性、耐寒性及び耐白化性を与え、成分（ｂ）
によって電線に必要な耐摩耗性と引張強さ等の強度が改
善される。成分（ａ）のポリプロピレン比率を高めれ
ば、強度が改善されるように考えられるが、ポリプロピ
レン比率を８０％以上に高めると、耐摩耗性の向上度合
いが少ない割に耐寒性や耐白化性が大きく低下するとと
もに、柔軟性が失われる。しかし、本発明のように１−
ブテンとプロピレンとの共重合体及びポリプロピレンと
の比率を４０／６０〜２０／８０の範囲に定め、これに
デュロメータ硬さが６０以上のポリオレフィン樹脂を添
加すると、耐摩耗性等の強度向上と柔軟性の双方がバラ
ンスよく満たされる。なお、アロイ化ポリマーを使用し
ても、例えば自動車用等の使用電圧が低い用途には問題
なく使用することができる。なお、本発明の成分（ａ）
で用いる共重合体の構造はブロック構造あるいはランダ
ム構造であり、いずれの構造であっても得られる特性に
大差はない。The alloyed material such as the component (a) used in the present invention generally has a structure in which one polymer is dispersed like an island in one polymer. Such a material is considered to be unsuitable for insulation coating of electric wires due to poor mechanical strength, and its use as an insulation coating polymer has not been studied at all. However, the inventor of the present invention has investigated that when a polyolefin resin having a predetermined hardness is blended with the resin, abrasion resistance and flexibility are developed in a well-balanced manner, and the required abrasion resistance and strength of the electric wire can be obtained. This has led to the invention. That is, component (a) imparts flexibility, cold resistance and whitening resistance to the resin composition, and component (b)
Thereby, the strength such as wear resistance and tensile strength required for the electric wire is improved. It is thought that the strength is improved by increasing the polypropylene ratio of the component (a). However, when the polypropylene ratio is increased to 80% or more, the cold resistance and whitening resistance are large although the degree of improvement in the wear resistance is small. As it decreases, flexibility is lost. However, as in the present invention, 1-
When the ratio of the copolymer of butene and propylene and the ratio of polypropylene is set in the range of 40/60 to 20/80, and a polyolefin resin having a durometer hardness of 60 or more is added thereto, strength improvement such as abrasion resistance and flexibility can be achieved. Both sexes are well balanced. Even if an alloyed polymer is used, it can be used without problems in applications where the working voltage is low, such as for automobiles. The component (a) of the present invention
The structure of the copolymer used in (1) is a block structure or a random structure, and there is no great difference in the characteristics obtained with any structure.
【００１０】成分（ｂ）としては高密度ポリエチレンや
ポリプロピレンが利用できるが、デュロメータ硬さが６
０以上のものが必要で、（ａ）と（ｂ）との重量比が９
５／５〜５０／５０の範囲内で配合されていることが必
要である。この範囲に満たないと樹脂組成物に十分な強
度が確保されず、この範囲を越えると柔軟性に欠けるこ
とになるためである。As the component (b), high-density polyethylene or polypropylene can be used.
0 or more is required, and the weight ratio between (a) and (b) is 9
It is necessary to be blended within the range of 5/5 to 50/50. If it is less than this range, sufficient strength is not secured in the resin composition, and if it exceeds this range, flexibility is lacking.
【００１１】そして、（ａ）及び（ｂ）のポリマー成分
の１００重量部に対して５０〜２００重量部の金属水酸
化物が必要で、金属水酸化物がこの範囲に満たないと電
線に必要とされる難燃性が不足し、２００重量部を越え
ると電線の耐摩耗性や引張強さ等の機械的強度が不足す
る。Then, 50 to 200 parts by weight of the metal hydroxide is required for 100 parts by weight of the polymer components (a) and (b). If it exceeds 200 parts by weight, the mechanical strength such as abrasion resistance and tensile strength of the wire will be insufficient.
【００１２】（ｃ）の金属水酸化物としては、水酸化マ
グネシウム、水酸化アルミニウム及び水酸化カルシウム
等が好適である。これらの金属水酸化物の粒径はポリマ
ーへの分散性、作業性、電線特性等の点から平均粒径
０．１〜５μｍのものが好ましいが、この範囲を越えて
も本発明の初期の目的は達成することができる。また、
金属水酸化物の凝集防止、ポリマーへの分散性向上及び
ポリマーへの接着性向上の目的で、シランカップリング
剤、チタネートカップリング剤、脂肪酸及びその金属塩
等を用いて表面処理を施したものを用いることが好まし
い。As the metal hydroxide (c), magnesium hydroxide, aluminum hydroxide, calcium hydroxide and the like are preferable. The average particle diameter of these metal hydroxides is preferably from 0.1 to 5 μm from the viewpoint of dispersibility in a polymer, workability, electric wire characteristics, and the like. The purpose can be achieved. Also,
Surface treated with silane coupling agent, titanate coupling agent, fatty acid and its metal salt for the purpose of preventing aggregation of metal hydroxide, improving dispersibility in polymer and improving adhesion to polymer It is preferable to use
【００１３】さらに、難燃性を高めるために、ハイドロ
タルサイト類やシリカ、カーボンブラック、ホウ酸亜
鉛、リン化合物等の難燃助剤を添加してもよく、また、
酸化防止剤、滑剤、分散剤、銅害防止剤、架橋剤、架橋
助剤或いは着色剤等を添加してもよく、また、各種の架
橋方法にてポリマーの架橋を行ってもよい。Further, in order to enhance the flame retardancy, a flame retardant aid such as hydrotalcites, silica, carbon black, zinc borate, phosphorus compounds and the like may be added.
An antioxidant, a lubricant, a dispersant, a copper damage inhibitor, a cross-linking agent, a cross-linking aid or a colorant may be added, and the polymer may be cross-linked by various cross-linking methods.
【００１４】ところで、上述の各原料成分を互いに混練
するに際しては、上述の（ａ）のアロイ化ポリマーと
（ｃ）の金属水酸化物とを予め混練し、その後に（ｂ）
のポリオレフィン樹脂を添加して混練することが好まし
い。その理由は、次のようであると推測される。本来、
（ｂ）のポリオレフィンと金属水酸化物とは接着性が極
めて乏しいため、十分な難燃性が得られるような量を添
加すると、樹脂組成物全体の強度低下が大きく、これが
耐摩耗性や引張強さの低下や白化現象の大きな原因とな
っていた。しかし、アロイ化ポリマー（ａ）は（ｂ）に
比べて金属水酸化物との接着性が僅かに高く、アロイ化
ポリマーと金属水酸化物とを混練するとアロイ化ポリマ
ーが金属水酸化物の粉末の全周をくるむように取り巻
く。そして、次にこれとポリオレフィン樹脂とを混練す
ると、ポリオレフィン樹脂中に他のアロイ化ポリマーに
よってくるまれた金属水酸化物の粉末が分散した状態と
なるのである。ポリオレフィン樹脂とアロイ化ポリマー
との親和性は、同様なポリマーであるから、ポリオレフ
ィン樹脂と金属水酸化物との接着性に比べて格段に良
い。従って、金属水酸化物粉末は接着性が比較的良いア
ロイ化ポリマーに取り囲まれ、そのアロイ化ポリマーは
ポリオレフィン樹脂に取り囲まれることになり、三者の
接着性はポリオレフィン樹脂が金属水酸化物粉末に接し
てしまうことが多い従来の構造に比べて格段に向上す
る。このため、樹脂組成物全体としては、従来と同一比
率の金属水酸化物を添加して十分な難燃性を確保できな
がら、耐摩耗性や引張強さ等の機械的強度を高め、ま
た、屈曲に対する柔軟性や耐白化性を高めることができ
るのである。When the above-mentioned raw material components are kneaded with each other, the alloyed polymer (a) and the metal hydroxide (c) are kneaded in advance, and then (b)
It is preferable to add and knead the polyolefin resin. The reason is presumed to be as follows. Originally,
Since the adhesion between the polyolefin and the metal hydroxide of (b) is extremely poor, the addition of such an amount that provides sufficient flame retardancy causes a large decrease in the strength of the entire resin composition, which results in abrasion resistance and tensile strength. This was a major cause of the decrease in strength and the whitening phenomenon. However, the alloyed polymer (a) has slightly higher adhesiveness to the metal hydroxide than (b), and when the alloyed polymer and the metal hydroxide are kneaded, the alloyed polymer becomes a powder of the metal hydroxide. Surrounding the whole circumference of. Then, when this is kneaded with the polyolefin resin, the metal hydroxide powder wrapped by the other alloyed polymer is dispersed in the polyolefin resin. Since the affinity between the polyolefin resin and the alloyed polymer is similar, it is much better than the adhesion between the polyolefin resin and the metal hydroxide. Therefore, the metal hydroxide powder is surrounded by an alloyed polymer having relatively good adhesion, and the alloyed polymer is surrounded by a polyolefin resin. This is significantly improved as compared with the conventional structure that often touches. For this reason, the resin composition as a whole, while ensuring sufficient flame retardancy by adding the same ratio of metal hydroxide as before, while increasing the mechanical strength such as abrasion resistance and tensile strength, Flexibility against bending and whitening resistance can be enhanced.
【００１５】[0015]
【発明の効果】以上述べたように、請求項１の発明の難
燃性樹脂組成物によれば、１−ブテンとプロピレンとの
共重合体及びポリプロピレンのアロイ化ポリマーと所定
硬さのポリオレフィン樹脂とを所定量配合することによ
り、耐摩耗性と柔軟性とがバランスよく発現し、所要の
強度が確保できながら、柔軟性、耐寒性及び耐白化性が
得られるという効果を奏する。As described above, according to the flame-retardant resin composition of the first aspect, a copolymer of 1-butene and propylene, an alloyed polymer of polypropylene, and a polyolefin resin having a predetermined hardness are provided. When a predetermined amount is blended, abrasion resistance and flexibility are expressed in a well-balanced manner, and an effect is obtained in which flexibility, cold resistance and whitening resistance can be obtained while securing required strength.
【００１６】また、請求項２の製造方法によれば、金属
水酸化物と接着性に優れたアロイ化ポリマーとを予め混
練し、その後に、ポリオレフィン樹脂を混練するように
しているから、ポリマー成分と金属水酸化物との接着性
を高めることができ、もって耐摩耗性，引張強さ、柔軟
性及び耐白化性を一層高めることができるという優れた
効果が得られる。According to the production method of the second aspect, the metal hydroxide and the alloyed polymer having excellent adhesiveness are kneaded in advance, and then the polyolefin resin is kneaded. And the metal hydroxide can be improved, whereby an excellent effect of further improving wear resistance, tensile strength, flexibility and whitening resistance can be obtained.
【００１７】そして、請求項３の発明によれば、請求項
１の発明に係る樹脂組成物を絶縁被覆としているから、
絶縁被覆の機械的強度が高く、かつ、柔軟に曲げること
ができ、しかも難燃性に優れる絶縁電線を提供すること
ができる。According to the third aspect of the present invention, the resin composition according to the first aspect of the present invention is used as an insulating coating.
It is possible to provide an insulated wire that has high mechanical strength of the insulating coating, can be flexibly bent, and has excellent flame retardancy.
【００１８】[0018]
【実施例】以下、本発明のいくつかの実施例について説
明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Some embodiments of the present invention will be described below.
【００１９】本発明の実施例１〜３として、（１−ブテ
ン／プロピレン）共重合体＋ポリプロピレンからなるア
ロイ化ポリマー、水酸化マグネシウム、赤リンを表１に
示す割合で混練し、その後、ポリプロピレン（デュロメ
ータ硬さ＝６９）を同表に示す割合で添加し、混練した
樹脂組成物を作製した。As Examples 1 to 3 of the present invention, an alloyed polymer consisting of (1-butene / propylene) copolymer + polypropylene, magnesium hydroxide and red phosphorus were kneaded at the ratios shown in Table 1, and then polypropylene (Durometer hardness = 69) was added at the ratio shown in the same table to prepare a kneaded resin composition.
【００２０】一方、比較例１〜６として、（１−ブテン
／プロピレン）共重合体＋ポリプロピレンからなるアロ
イ化ポリマー、エチレン−エチルアクリレート共重合体
（エチルアクリレート含量＝３５％）、水酸化マグネシ
ウム、赤リンを表２および表３に示す割合で混練し、そ
の後、ポリプロピレン、直鎖状低密度ポリエチレン（デ
ュロメータ硬さ＝５８）を同表に示す割合で添加し、混
練した樹脂組成物を作製した。以下、これら実施例１〜
３及び比較例１〜６に示す樹脂の製造方法を説明する。On the other hand, as Comparative Examples 1 to 6, an alloyed polymer consisting of (1-butene / propylene) copolymer + polypropylene, ethylene-ethyl acrylate copolymer (ethyl acrylate content = 35%), magnesium hydroxide, Red phosphorus was kneaded at the ratios shown in Tables 2 and 3, and then polypropylene and linear low-density polyethylene (durometer hardness = 58) were added at the ratios shown in the same table to prepare a kneaded resin composition. . Hereinafter, these Examples 1 to
3 and methods for producing the resins shown in Comparative Examples 1 to 6 will be described.
【００２１】まず（ｂ）のポリオレフィン樹脂を除くす
べてのポリマー及び難燃剤、その他配合剤をヘンシェル
ミキサーにて撹拌し、その後１８０℃の加圧型ニーダに
投入し、混練する。材料温度が１６０℃付近に達した
ら、（ｂ）のポリオレフィン樹脂を投入し、さらに混練
する。材料温度が１８０〜１９０℃に達したところで混
練を終了し、ニーダから取り出して、１７０℃の一軸造
粒押出機のフィーダへ移す。そして８０℃前後の温水で
カッター部を冷却しながら押出造粒し、得られたペレッ
トを脱水・乾燥する。First, all the polymers except for the polyolefin resin (b), the flame retardant, and other compounding agents are stirred by a Henschel mixer, and then charged into a 180 ° C. pressure kneader and kneaded. When the material temperature reaches around 160 ° C., the polyolefin resin (b) is charged and further kneaded. When the material temperature reaches 180 to 190 ° C., the kneading is completed, the kneading is finished, and the material is taken out of the kneader and transferred to a feeder of a single-screw granulating extruder at 170 ° C. Then, extrusion granulation is performed while cooling the cutter section with warm water of about 80 ° C., and the obtained pellets are dehydrated and dried.
【００２２】また、表３に示す割合の比較例７について
は、（ｂ）のポリオレフィン樹脂を後から混入するので
はなく、全ての原料成分を同時に混練した樹脂組成物を
上記と同様の合成条件で作製した。In Comparative Example 7 in the ratio shown in Table 3, instead of mixing the polyolefin resin (b) later, a resin composition obtained by kneading all the raw materials simultaneously was prepared under the same synthesis conditions as described above. Prepared.
【００２３】なお、（１−ブテン／プロピレン）共重合
体＋ポリプロピレンからなるアロイ化ポリマーは宇部レ
キセン社製ＣＡＰ（商品名）を使用し、エチレン−エチ
ルアクリレート共重合体は、三井デュポンケミカル社
製、ポリプロピレンはトクヤマ社製のものを使用した。
また本実施例及び比較例で使用した（１−ブテン／プロ
ピレン）共重合体は、ブロック構造のものである。The alloyed polymer consisting of (1-butene / propylene) copolymer + polypropylene is CAP (trade name) manufactured by Ube Lexen Co., and ethylene-ethyl acrylate copolymer is manufactured by Du Pont-Mitsui Chemicals. The polypropylene used was manufactured by Tokuyama Corporation.
The (1-butene / propylene) copolymer used in this example and the comparative example has a block structure.
【００２４】上記のようにして製造したこれらの樹脂組
成物のペレットを２１０℃の電線押出機に投入し、銅芯
線の外周に０．３mmの厚みで押出して作成した薄肉電線
にて、次の特性評価を行った。 難燃性：長さ３００mmの電線試料を水平に支持し、口
径１０mmのブンゼンバーナーを用いて、還元炎の先端を
試料中央部の下側から３０秒以内で燃焼するまで当て、
炎を静かに取り去った後、試料の燃焼の程度を調べた。 耐摩耗性：２３±５℃の室温で、台上に固定した長さ
７５０mmの電線試料の絶縁被覆表面を軸方向に１０mm以
上の長さに渡ってブレードで往復して摩耗させる。ブレ
ードを毎分５０回又は６０回の速さで往復させたとき、
絶縁体の摩耗により、ブレードが芯線導体に接触するま
での往復回数を測定する。次に試料を１００mm移動させ
て、時計方向に９０度回転し、上記の測定を繰り返す。
この測定は、同一試料で計４回行い、その最小値を摩耗
抵抗とした。 耐白化性：半径６mmの筒に静かに数回巻き付け、その
状態で表面の白化度合いを目視にて確認した。 押出加工性：高速押出性及び電線外観等から総合的に
判断した。The pellets of these resin compositions produced as described above are put into an electric wire extruder at 210 ° C., and are extruded with a thickness of 0.3 mm on the outer periphery of the copper core wire. Characteristic evaluation was performed. Flame retardancy: A 300 mm long wire sample is supported horizontally, and the tip of the reducing flame is applied from below the center of the sample using a Bunsen burner with a diameter of 10 mm until it burns within 30 seconds.
After gently removing the flame, the degree of combustion of the sample was determined. Abrasion resistance: At room temperature of 23 ± 5 ° C., the insulating coating surface of a 750 mm long wire sample fixed on a table is reciprocated and abraded by a blade over a length of 10 mm or more in the axial direction. When the blade is reciprocated 50 or 60 times per minute,
The number of reciprocations until the blade contacts the core conductor due to wear of the insulator is measured. Next, the sample is moved 100 mm, rotated 90 degrees clockwise, and the above measurement is repeated.
This measurement was performed a total of four times with the same sample, and the minimum value was defined as abrasion resistance. Whitening resistance: The film was gently wound several times around a cylinder having a radius of 6 mm, and the degree of whitening of the surface was visually checked in that state. Extrusion processability: Comprehensively judged from high-speed extrusion, electric wire appearance, and the like.
【００２５】評価結果を表１、表２及び表３に示す。The evaluation results are shown in Tables 1, 2 and 3.
【００２６】[0026]
【表１】 [Table 1]
【００２７】[0027]
【表２】 [Table 2]
【表３】 [Table 3]
【００２８】まず、表１に示すように、本発明の樹脂組
成物に係る実施例１〜３では難燃性、耐白化性、押出加
工性、柔軟性のいずれも良好であった。また耐摩耗性も
目標値である２００回を大きく上回り、引張強さ伸びも
良い特性値が得られた。これに対し、（１−ブテン／プ
ロピレン）共重合体＋ポリプロピレンからなるアロイ化
ポリマーとポリプロピレンの重量比が限定値から外れて
いる比較例１、２では、耐白化性や柔軟性が低下してい
る。また、比較例２ではデュロメータ硬さが規定値より
低い直鎖状低密度ポリエチレンが含まれており、上記と
併せて押出加工性も低下している。（ｂ）成分のポリオ
レフィン樹脂を全く含有しない比較例３では、良好な耐
摩耗性が得られない。水酸化マグネシウムの割合が限定
値より少ない比較例４では難燃性が低下しており、逆に
多い比較例５では難燃性、押出加工性以外の評価項目に
ついて全てが低下している。（１−ブテン／プロピレ
ン）共重合体＋ポリプロピレンからなるアロイ化ポリマ
ーを含有しない比較例６では、耐摩耗性が最も大きく低
下しており、引張強さや押出加工性も低下している。ま
た、全ての成分を同時に混練した比較例７でも、耐摩耗
性が大きく低下している。First, as shown in Table 1, in Examples 1 to 3 relating to the resin composition of the present invention, all of the flame retardancy, the whitening resistance, the extrudability and the flexibility were good. Further, the abrasion resistance greatly exceeded the target value of 200 times, and a characteristic value with good tensile strength and elongation was obtained. On the other hand, in Comparative Examples 1 and 2 in which the weight ratio of the alloyed polymer consisting of the (1-butene / propylene) copolymer + polypropylene and the polypropylene was out of the limited values, the whitening resistance and flexibility were reduced. I have. In Comparative Example 2, a linear low-density polyethylene having a durometer hardness lower than the specified value was included, and the extrudability was also reduced in addition to the above. In Comparative Example 3 containing no polyolefin resin as the component (b), good abrasion resistance cannot be obtained. In Comparative Example 4 in which the proportion of magnesium hydroxide was smaller than the limit value, the flame retardancy was reduced, and in Comparative Example 5, all of the evaluation items other than the flame retardancy and the extrudability were reduced. In Comparative Example 6, which did not contain the alloyed polymer consisting of (1-butene / propylene) copolymer + polypropylene, the abrasion resistance was reduced most, and the tensile strength and the extrudability were also reduced. Also, in Comparative Example 7, in which all components were kneaded at the same time, the abrasion resistance was significantly reduced.
フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｈ０１Ｂ 3/44 Ｈ０１Ｂ 3/44 Ｊ Continued on the front page (51) Int.Cl. 6 Identification code FI H01B 3/44 H01B 3/44 J
Claims (3)
ロピレンを４０／６０〜２０／８０の割合で混合してな
るアロイ化したポリマー （ｂ）デュロメータ硬さ６０以上のポリオレフィン樹脂 （ｃ）金属水酸化物 （ａ）と（ｂ）との重量比が９５／５〜５０／５０であ
って、（ａ）と（ｂ）との合計１００重量部に対して
（ｃ）が５０〜２００重量部であることを特徴とする耐
摩耗性難燃樹脂組成物。An alloy comprising the following components (a) to (c): (a) a copolymer of 1-butene and propylene and polypropylene mixed at a ratio of 40/60 to 20/80. (B) a polyolefin resin having a durometer hardness of 60 or more; (c) a metal hydroxide; the weight ratio of (a) to (b) is 95/5 to 50/50, and (a) and (b) ), Wherein (c) is 50 to 200 parts by weight based on 100 parts by weight in total.
性難燃樹脂組成物の製造方法であって （ａ）１−ブテンとプロピレンとの共重合体及びポリプ
ロピレンを４０／６０〜２０／８０の割合で混合してな
るアロイ化したポリマー （ｂ）デュロメータ硬さ６０以上のポリオレフィン樹脂 （ｃ）金属水酸化物 （ａ）と（ｂ）との重量比が９５／５〜５０／５０であ
って、（ａ）と（ｂ）との合計１００重量部に対して
（ｃ）が５０〜２００重量部、（ａ）と（ｃ）とを予め
混練した後に（ｂ）を添加して混練することを特徴とす
る耐摩耗性難燃樹脂組成物の製造方法。2. A method for producing a wear-resistant flame-retardant resin composition comprising the following components (a) to (c): (a) a copolymer of 1-butene and propylene and polypropylene Alloyed polymer obtained by mixing at a ratio of 60 to 20/80. (B) Polyolefin resin having a durometer hardness of 60 or more. (C) Metal hydroxide. The weight ratio of (a) to (b) is 95/5 to 5. (C) is 50 to 200 parts by weight with respect to 100 parts by weight of the total of (a) and (b), and (b) is kneaded with (a) and (c) in advance. A method for producing a wear-resistant flame-retardant resin composition, which comprises adding and kneading.
て絶縁被覆を形成した絶縁電線であって、前記樹脂組成
物は次の（ａ）〜（ｃ）の成分を含み、 （ａ）１−ブテンとプロピレンとの共重合体及びポリプ
ロピレンを４０／６０〜２０／８０の割合で混合してな
るアロイ化したポリマー （ｂ）デュロメータ硬さ６０以上のポリオレフィン樹脂 （ｃ）金属水酸化物 （ａ）と（ｂ）との重量比が９５／５〜５０／５０であ
って、（ａ）と（ｂ）との合計１００重量部に対して
（ｃ）が５０〜２００重量部であることを特徴とする絶
縁電線。3. An insulated wire in which an insulating coating is formed on the outer periphery of a conductive core wire with a resin composition, wherein the resin composition contains the following components (a) to (c): -An alloyed polymer obtained by mixing a copolymer of butene and propylene and polypropylene in a ratio of 40/60 to 20/80; (b) a polyolefin resin having a durometer hardness of 60 or more; (c) a metal hydroxide (a) ) And (b) are 95/5 to 50/50, and (c) is 50 to 200 parts by weight with respect to 100 parts by weight in total of (a) and (b). Characterized insulated wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30855897A JPH11140246A (en) | 1997-11-11 | 1997-11-11 | Abrasion resistant flame retarding resin composition, its production and insulated wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30855897A JPH11140246A (en) | 1997-11-11 | 1997-11-11 | Abrasion resistant flame retarding resin composition, its production and insulated wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11140246A true JPH11140246A (en) | 1999-05-25 |
Family
ID=17982485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30855897A Pending JPH11140246A (en) | 1997-11-11 | 1997-11-11 | Abrasion resistant flame retarding resin composition, its production and insulated wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11140246A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002030189A (en) * | 2000-07-18 | 2002-01-31 | Mitsubishi Cable Ind Ltd | Flame-retarded resin composition, and cable and wire covered with the same |
| JP2006083327A (en) * | 2004-09-17 | 2006-03-30 | Sumitomo Chemical Co Ltd | Olefinic resin composition |
| JP2008169257A (en) * | 2007-01-10 | 2008-07-24 | Mitsui Chemicals Inc | Propylene resin composition, and molded article and electric wire made thereof |
| JP2009527620A (en) * | 2006-02-22 | 2009-07-30 | エルエス ケーブル リミテッド | Flame retardant polypropylene resin composition with wear resistance |
| JP2010282776A (en) * | 2009-06-03 | 2010-12-16 | Swcc Showa Cable Systems Co Ltd | On-vehicle antenna coaxial cable |
-
1997
- 1997-11-11 JP JP30855897A patent/JPH11140246A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002030189A (en) * | 2000-07-18 | 2002-01-31 | Mitsubishi Cable Ind Ltd | Flame-retarded resin composition, and cable and wire covered with the same |
| JP2006083327A (en) * | 2004-09-17 | 2006-03-30 | Sumitomo Chemical Co Ltd | Olefinic resin composition |
| JP2009527620A (en) * | 2006-02-22 | 2009-07-30 | エルエス ケーブル リミテッド | Flame retardant polypropylene resin composition with wear resistance |
| JP2008169257A (en) * | 2007-01-10 | 2008-07-24 | Mitsui Chemicals Inc | Propylene resin composition, and molded article and electric wire made thereof |
| JP2010282776A (en) * | 2009-06-03 | 2010-12-16 | Swcc Showa Cable Systems Co Ltd | On-vehicle antenna coaxial cable |
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