JP2013149472A - 難燃性電線・ケーブル - Google Patents
難燃性電線・ケーブル Download PDFInfo
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- JP2013149472A JP2013149472A JP2012008899A JP2012008899A JP2013149472A JP 2013149472 A JP2013149472 A JP 2013149472A JP 2012008899 A JP2012008899 A JP 2012008899A JP 2012008899 A JP2012008899 A JP 2012008899A JP 2013149472 A JP2013149472 A JP 2013149472A
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- halogen
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Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
- C08K5/134—Phenols containing ester groups
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Abstract
【解決手段】難燃性電線・ケーブル10は、導体11外周に、エチレン・プロピレン・ジエン共重合体を60〜90質量%およびエチレン・α−オレフィン共重合体10〜40質量%からなるポリオレフィン100質量部に対し、酸化防止剤として0.1〜5.0質量部のビス[2-メチル-4(3-n-アルキルチオプロピオニルオキシ)-5-tert-ブチルフェニル]スルフィドおよび0.1〜5.0質量部のテトラキス-[メチレン-3-(3′,5′-ジ-tert-ブチル-4′-ヒドロキシフェニル)プロピオネート]メタンを含み、架橋剤として1.0〜4.0質量部のジクミルペルオキシドを含み、かつ架橋助剤として0.5〜6.0質量部のエチレングリコールジメタクリレートを含むハロゲンフリー難燃性樹脂組成物の架橋体からなる被覆を備える。
【選択図】図1
Description
(1)シース13の引張強さおよび伸び(JIS K 6253に準拠して測定)が、それぞれ7MPa以上および300%以上である。
(2)シース13の酸素指数(JIS K 7201−2に準拠して測定)が、30以上である。
(3)シース13の体積抵抗率(JIS K 6723に準拠して測定)が1×1015Ω・cm以上である。
JSR(株)製 商品名 JS EP51
(エチレン含量 67質量%、ムーニー粘度ML1+4 23)
EPDM(2):
JSR(株)製 商品名 JS EP21
(エチレン含量 61質量%、ムーニー粘度ML1+4 23)
エチレン・α−オレフィン共重合体:
三井化学(株)製 商品名 タフマーA1085S
水酸化マグネシウム:
協和化学工業社製 商品名 キスマ5A
酸化防止剤(1):
ビス[2−メチル−4−(3−n−アルキルチオプロピオニルオキシ)−5−
tert−ブチルフェニル]スルフィド;
ADEKA社製 商品名 アデカスタブAO−23
酸化防止剤(2):
テトラキス−[メチレン−3−(3′,5′−ジ−tert−ブチル−4′−
ヒドロキシフェニル)プロピオネート]メタン;
ADEKA社製 商品名 アデカスタブAO−60
酸化防止剤(3):
ビス[3−(3,5−ジ−tert−ブチル−4−ヒドロキシフェニル)
プロピオネート];
BASF社製 商品名 Irganox 1035
酸化防止剤(4):
テトラキス[メチレン−3−(ドデシルチオ)プロピオネート]メタン;
ADEKA社製 商品名 アデカスタブAO−412S
老化防止剤:
2−メルカプトベンズイミダゾール;
大内新興化学工業(株)製 商品名 ノクラックMB
EPDM(1)70.0質量部、エチレン・α−オレフィン共重合体30.0質量部、水酸化マグネシウム150.0質量部、酸化防止剤(1)0.2質量部、酸化防止剤(2)0.2質量部、老化防止剤0.2質量部、ジクミルペルオキシド(DCP)1.8質量部、およびエチレングリコールジメタクリレート(EDMA)1.0質量部をミキシングロールにより均一に混練して難燃性樹脂組成物を得た。
難燃性樹脂組成物の組成を表1に示すように変えた以外は、実施例1と同様にして、難燃性樹脂組成物を調製し、また、これらの組成物を用いて難燃性電線・ケーブルを製造した。
[引張強さおよび伸び]
ケーブルとは別に難燃性樹脂組成物から試験用シート(1mm厚)をプレス成型し(170℃、5MPaで20分間加熱加圧)、この試験用シートからJIS K 6251に規定する3号形ダンベル試験片を打ち抜き、JIS C 3005に基づく引張試験(標線間隔20mm、引張速度200mm/分)を行い、破断時の引張強さおよび伸びを測定した。
[酸素指数]
上記と同様にして、ケーブルとは別に難燃性樹脂組成物からなる試験用シート(3mm厚)を作製し、この試験用シートから幅6.5mm×長さ150mmの試験片を打ち抜き、JIS K 7201−2に準拠して測定した。
[体積抵抗率]
上記と同様にして、ケーブルとは別に難燃性樹脂組成物からなる試験用シート(0.5mm厚)を作製し、JIS K 6723に基づき、DC500Vを用いて常温で測定した。
また、ポリオレフィン100質量部に対する配合量を、酸化防止剤(1)(ビス[2−メチル−4−(3−n−アルキルチオプロピオニルオキシ)−5−tert−ブチルフェニル]スルフィド)1.0〜4.0質量部、酸化防止剤(2)(テトラキス−[メチレン−3−(3′,5′−ジ−tert−ブチル−4′−ヒドロキシフェニル)プロピオネート]メタン)0.3〜2.0質量部、老化防止剤(2−メルカプトベンズイミダゾール)0.5〜3.0質量部、DCP(ジクミルペルオキシド)2.0〜4.0質量部、EDME(エチレングリコールジメタクリレート)2.0〜5.0質量部とすることによって引張強さにおいてより良好な結果が得られた(実施例3〜8)。
さらに、ポリオレフィン100質量部に対する配合量を、酸化防止剤(1)(ビス[2−メチル−4−(3−n−アルキルチオプロピオニルオキシ)−5−tert−ブチルフェニル]スルフィド)2.5〜3.5質量部、酸化防止剤(2)(テトラキス−[メチレン−3−(3′,5′−ジ−tert−ブチル−4′−ヒドロキシフェニル)プロピオネート]メタン)0.5〜1.5質量部、老化防止剤(2−メルカプトベンズイミダゾール)1.5〜2.5質量部、DCP(ジクミルペルオキシド)2.5〜3.5質量部、EDME(エチレングリコールジメタクリレート)3.5〜4.5質量部とすることによって酸素指数においてより良好な結果が得られた(実施例5、6)。
Claims (7)
- 導体外周に、エチレン・プロピレン・ジエン共重合体を60〜90質量%およびエチレン・α−オレフィン共重合体10〜40質量%からなるポリオレフィン100質量部に対し、酸化防止剤として0.1〜5.0質量部のビス[2−メチル−4−(3−n−アルキルチオプロピオニルオキシ)−5−tert−ブチルフェニル]スルフィドおよび0.1〜5.0質量部のテトラキス−[メチレン−3−(3′,5′−ジ−tert−ブチル−4′−ヒドロキシフェニル)プロピオネート]メタンを含み、老化防止剤として0.1〜5.0質量部の2−メルカプトベンズイミダゾールを含み、架橋剤として1.0〜4.0質量部のジクミルペルオキシドを含み、かつ架橋助剤として0.5〜6.0質量部のエチレングリコールジメタクリレートを含むハロゲンフリー難燃性樹脂組成物の架橋体からなる被覆を備えることを特徴とする難燃性電線・ケーブル。
- 前記ハロゲンフリー難燃性樹脂組成物は、ポリオレフィン100質量部に対し、ビス[2−メチル−4−(3−n−アルキルチオプロピオニルオキシ)−5−tert−ブチルフェニル]スルフィドを1.0〜4.0質量部、テトラキス−[メチレン−3−(3′,5′−ジ−tert−ブチル−4′−ヒドロキシフェニル)プロピオネート]メタンを0.3〜2.0質量部、2−メルカプトベンズイミダゾールを0.5〜3.0質量部、ジクミルペルオキシドを2.0〜4.0質量部、エチレングリコールジメタクリレートを2.0〜5.0質量部含有することを特徴とする請求項1記載の難燃性電線・ケーブル。
- 前記ハロゲンフリー難燃性樹脂組成物は、ポリオレフィン100質量部に対し、ビス[2−メチル−4−(3−n−アルキルチオプロピオニルオキシ)−5−tert−ブチルフェニル]スルフィドを2.5〜3.5質量部、テトラキス−[メチレン−3−(3′,5′−ジ−tert−ブチル−4′−ヒドロキシフェニル)プロピオネート]メタンを0.5〜1.5質量部、2−メルカプトベンズイミダゾールを1.5〜2.5質量部、ジクミルペルオキシドを2.5〜3.5質量部、エチレングリコールジメタクリレートを3.5〜4.5質量部含有することを特徴とする請求項1記載の難燃性電線・ケーブル。
- 前記ハロゲンフリー難燃性樹脂組成物は、ポリオレフィン100質量部に対し、難燃剤として50〜250質量部の金属水酸化物を含むことを特徴とする請求項1乃至3のいずれか1項記載の難燃性電線・ケーブル。
- 前記金属水酸化物は、水酸化マグネシウムであることを特徴とする請求項4記載の難燃性電線・ケーブル。
- 前記エチレン・プロピレン・ジエン共重合体は、ムーニー粘度ML1+4(125℃)が30以下で、かつエチレン含量が60質量%以上のものであることを特徴とする請求項1乃至5のいずれか1項記載の難燃性電線・ケーブル。
- 前記ハロゲンフリー難燃性樹脂組成物は、引張強さ(JIS K 6253)が7MPa以上、伸び(JIS K 6253)が300%以上、酸素指数(JIS K 7201−2)が30以上で、かつ体積抵抗率が1×1015Ω・cm以上であることを特徴とする請求項1乃至6のいずれか1項記載の難燃性電線・ケーブル。
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CN103819823A (zh) * | 2014-03-05 | 2014-05-28 | 福建省盛达橡胶进出口有限公司 | 一种电线电缆用三元乙丙无卤阻燃橡胶 |
CN105837944A (zh) * | 2016-05-31 | 2016-08-10 | 李小涛 | 一种阻燃聚丙烯电缆料及其制备方法 |
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CN105837915A (zh) * | 2016-05-31 | 2016-08-10 | 李小涛 | 聚乙烯绝缘电缆料及其制备方法 |
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