JP5594330B2 - ハロゲンフリー難燃性樹脂組成物、絶縁電線及びケーブル - Google Patents
ハロゲンフリー難燃性樹脂組成物、絶縁電線及びケーブル Download PDFInfo
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- JP5594330B2 JP5594330B2 JP2012164883A JP2012164883A JP5594330B2 JP 5594330 B2 JP5594330 B2 JP 5594330B2 JP 2012164883 A JP2012164883 A JP 2012164883A JP 2012164883 A JP2012164883 A JP 2012164883A JP 5594330 B2 JP5594330 B2 JP 5594330B2
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- 239000003063 flame retardant Substances 0.000 title claims description 50
- 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 description 38
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- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
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- ZQKXQUJXLSSJCH-UHFFFAOYSA-N melamine cyanurate Chemical compound NC1=NC(N)=NC(N)=N1.O=C1NC(=O)NC(=O)N1 ZQKXQUJXLSSJCH-UHFFFAOYSA-N 0.000 description 1
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- XJKVPKYVPCWHFO-UHFFFAOYSA-N silicon;hydrate Chemical compound O.[Si] XJKVPKYVPCWHFO-UHFFFAOYSA-N 0.000 description 1
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- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- VLCLHFYFMCKBRP-UHFFFAOYSA-N tricalcium;diborate Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]B([O-])[O-].[O-]B([O-])[O-] VLCLHFYFMCKBRP-UHFFFAOYSA-N 0.000 description 1
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
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Description
本実施の形態のハロゲンフリー難燃性樹脂組成物は、ベースポリマに、ハロゲンフリー難燃剤としての金属水酸化物が含有されたハロゲンフリー難燃性樹脂組成物において、LLDPEを60〜70質量%、メルトフローレイト(MFR)が100以上のEVAを10質量%以上、及びマレイン酸変性ポリオレフィンを10〜20質量%含有するベースポリマと、前記ベースポリマ100質量部に対して、150〜220質量部の割合で添加された金属水酸化物と、カーボンブラックとから構成され、前記金属水酸化物及び前記カーボンブラックの相互の添加割合(金属水酸化物:カーボンブラック)は、15:1〜100:1であり、かつ架橋されてなるものである。
本実施の形態のハロゲンフリー難燃性樹脂組成物は、LLDPEを60〜70質量%、メルトフローレイト(MFR)が100以上のEVAを10質量%以上、及びマレイン酸変性ポリオレフィンを10〜20質量%含有するベースポリマと、ベースポリマ100質量部に対して、150〜220質量部の割合で添加された金属水酸化物及びカーボンブラックとから構成され、金属水酸化物及びカーボンブラックの相互の添加割合(金属水酸化物:カーボンブラック)は、15:1〜100:1であり、かつ架橋されてなるものである。
本実施の形態の絶縁電線は、汎用の材料からなる導体と、導体の外周に形成された、上述のハロゲンフリー難燃性樹脂組成物から構成された絶縁層とを備えている。
本実施の形態のケーブルは、導体と、導体の外周に形成された絶縁層と、絶縁層の外周に形成された上述のハロゲンフリー難燃性樹脂組成物から構成されたシースとを備えている。具体的には、汎用の材料からなる導体と、例えば、ポリブチレンナフタレート、ポリブチレンテレフタレート、ポリフェニレンオキサイド、及びポリエーテルエーテルケトンからなる群から選ばれる1種以上のポリマから構成された絶縁体と、その外周に、上述のハロゲンフリー難燃性樹脂組成物を、シース材料として形成することで、鉄道車両の用途の、特に、EN50306−3を満足するような制御用ケーブルを構成することができる。上述のように、絶縁体に、電気絶縁性に優れ、剛性の高いエンジニアプラスチックを使用することで、直流安定性、耐外傷性、特に、磨耗性にも優れたケーブルとすることができる。
実施例1〜9においては、表1に示す配合で、また、比較例1〜10においては、表4に示す配合で、ハロゲンフリー難燃性樹脂組成物を製造した。すなわち、表1及び表4に示された配合用材料を、加圧ニーダーによって混練し、ストランドで押出、冷却後ペレット状にした。
内外層からなる2層構造の絶縁体を有する絶縁電線を製造した。すなわち、表2に示す絶縁体の内層配合を、加圧ニーダーによって混練し、ストランドで押出冷却後ペレット状にした。絶縁体の外層配合についても、実施例1〜9及び比較例1〜10で得られたペレット状のハロゲンフリー難燃性樹脂組成物を用いた。
内外層からなる2層構造の絶縁体、及び実施例1〜9及び比較例1〜10で得られたハロゲンフリー難燃性樹脂組成物を用いたシースを備えたケーブルを製造した。
絶縁電線の場合、EN50264−3−1に準拠して実施した。規格を全て満足したものを合格とした。
ケーブルのシース材料をケーブルから剥ぎ、JISK6251に記載されている6号ダンベルで打ち抜き、打ち抜いた試験サンプルを引張試験機で200mm/minの速度で引っ張り、引張強さ及び破断伸びを測定した。引張強さ10MPa以上、破断伸び150%以上を合格とした。ケーブルに関しては、導体を抜いたチューブ形状における引張試験となるが、結果は同じとなるため記載は省略する。
初期引張試験同様、ケーブルからシース材料を剥ぎ、ダンベル6号で打ち抜き、打ち抜いた試験サンプルを100℃のASTM No.2油に72時間浸漬させる。浸漬後の試験サンプルを引張試験機で200mm/minの速度で引っ張り、引張強さ及び破断伸びを測定した。初期引張試験の結果から引張強さ残率70〜130%、破断伸び残率60〜140%の範囲に収まるものを合格とした。
初期引張試験と同様に、ケーブルからシース材料を剥ぎ、ダンベル6号で打ち抜き、打ち抜いた試験サンプルを100℃のASTM No.3油に168時間浸漬させる。浸漬後の試験サンプルを引張試験機で200mm/minの速度で引っ張り、引張強さ及び破断伸びを測定した。初期引張試験の結果から引張強さ残率70〜130%、破断伸び残率60〜140%の範囲に収まるものを合格とした。
絶縁電線及びケーブルともに、−40℃の雰囲気下で16時間放置後、その雰囲気下でケーブル、電線外径10倍のマンドルにケーブル、電線を6回巻き付け、クラックが入らないものを合格とした。
絶縁電線の場合、絶縁電線を135℃の雰囲気下で1時間放置後、電線に課電しながら90℃シャープエッジを500gの荷重で電線に押し付け10分間短絡しないことで合格とした(耐貫通試験)。ケーブルの場合、EN50305−5.6に準拠したダイナミックカットスルー試験を実施し合否判断とした。
表1、表4に示す材料を、6インチオープンロールで混練し、180℃で3分間プレスして1mm厚のシートを作製した。作製したシートを、電子線70kGyを照射して架橋させて、JISC3315−6.12に記載の引裂き性試験を実施し、引裂き強さ250N/cm以上、伸び15mm以上を合格とした。
絶縁電線及びケーブルともに、EN60332−1−2準拠に準拠した垂直燃焼試験を実施し合否判断とした。
絶縁電線及びケーブルをアルミ箔で包み、80℃の雰囲気下で2週間放置し、ブルームの発生を目視で判断し、ブルームがないものを合格とした。
2 絶縁体内層
3 絶縁体外層
4 錫めっき銅導体
5 絶縁体内層
6 絶縁体外層
7 金属編組
8 シース
Claims (4)
- LLDPEを60〜70質量%、メルトフローレイト(MFR)が100以上のEVAを10質量%以上、及びマレイン酸変性ポリオレフィンを10〜20質量%含有するベースポリマと、前記ベースポリマ100質量部に対して、150〜220質量部の割合で添加された金属水酸化物と、カーボンブラックとから構成され、
前記金属水酸化物及び前記カーボンブラックの相互の添加割合(金属水酸化物:カーボンブラック)は、15:1〜100:1であり、かつ
架橋されてなるハロゲンフリー難燃性樹脂組成物。 - 前記LLDPEは、MFRが1.0〜1.5であり、密度が0.915〜0.923g/cm3である請求項1に記載のハロゲンフリー難燃性樹脂組成物。
- 導体と、前記導体の外周に形成され、請求項1又は2に記載のハロゲンフリー難燃性樹脂組成物から構成された絶縁層とを備えた絶縁電線。
- 導体と、前記導体の外周に形成された絶縁層と、前記絶縁層の外周に形成され、請求項1又は2に記載のハロゲンフリー難燃性樹脂組成物から構成されたシースとを備えたケーブル。
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- 2013-05-14 CN CN201310177361.9A patent/CN103571027B/zh active Active
- 2013-07-23 US US13/949,181 patent/US20140030520A1/en not_active Abandoned
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2014
- 2014-07-22 JP JP2014148395A patent/JP6050788B2/ja active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2015038869A (ja) * | 2012-07-25 | 2015-02-26 | 日立金属株式会社 | ハロゲンフリー難燃性樹脂組成物を用いた絶縁電線及びケーブル |
JP2015130348A (ja) * | 2015-01-23 | 2015-07-16 | 日立金属株式会社 | ハロゲンフリー難燃性樹脂組成物を用いた鉄道車両用絶縁電線及びケーブル |
Also Published As
Publication number | Publication date |
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JP2015038869A (ja) | 2015-02-26 |
CN103571027A (zh) | 2014-02-12 |
US20140030520A1 (en) | 2014-01-30 |
CN103571027B (zh) | 2015-04-01 |
JP2014024910A (ja) | 2014-02-06 |
JP6050788B2 (ja) | 2016-12-21 |
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