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JPS63172753A - Flame-retardant crosslinkable resin composition - Google Patents

Flame-retardant crosslinkable resin composition

Info

Publication number
JPS63172753A
JPS63172753A JP291287A JP291287A JPS63172753A JP S63172753 A JPS63172753 A JP S63172753A JP 291287 A JP291287 A JP 291287A JP 291287 A JP291287 A JP 291287A JP S63172753 A JPS63172753 A JP S63172753A
Authority
JP
Japan
Prior art keywords
flame
ethylene
resin composition
density polyethylene
blend
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.)
Pending
Application number
JP291287A
Other languages
Japanese (ja)
Inventor
Kazuo Tanihira
谷平 一男
Kosaku Nakano
中野 耕作
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujikura Ltd
Original Assignee
Fujikura Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujikura Ltd filed Critical Fujikura Ltd
Priority to JP291287A priority Critical patent/JPS63172753A/en
Publication of JPS63172753A publication Critical patent/JPS63172753A/en
Pending legal-status Critical Current

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  • Compositions Of Macromolecular Compounds (AREA)
  • Organic Insulating Materials (AREA)

Abstract

PURPOSE:To provide the title compsn. which has excellent resistance to solvents and oils and good moldability and is suitable for use as an insulating material for insulated wires which must have high heat resistance and high flame retardance, by blending a blend of two specified PEs with a specified copolymer and a flame retarder. CONSTITUTION:The title compsn. is obtd. by blending 100pts.wt. resin component composed of a blend of low-density linear polyethylene and low-density polyethylene in a weight ratio of 1:2-1:6 with 10-20pts.wt. ethylene/vinyl acetate copolymer or styrene/ethylene/butylene/styrene block copolymer, 40-150pts.wt. flame retarder (e.g., magnesium hydroxide, decarbomophenyl ether, etc.) and 5-15pts. wt. crosslinking aid (e.g., trimethylolpropane trimethacrylate). By using the blend as a base polymer, a compsn. having good resistance to solvents and oils as well as good moldability can be obtd. even when a large amount of the flame retarder is used to impact high flame retardance. Thus, the compsn. is suitable for use as an insulating material for insulated wires which must have high flame retardance and high heat resistance.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、高耐熱性、高難燃性を要求される絶縁電線
の絶縁体、絶縁チューブ、収縮チューブなどに好適な難
燃架橋性樹脂組成物に関する。
[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a flame-retardant crosslinkable resin suitable for insulators of insulated wires, insulating tubes, shrinkable tubes, etc. that require high heat resistance and high flame retardancy. Regarding the composition.

〔従来技術とその問題点〕[Prior art and its problems]

従来、この種の難燃架橋性樹脂組成物としては、例えば
低密度ポリエチレン1001ffi部に、エチレン−酢
酸ビニル共重合体またはスチレンーエチレンープヂレン
ースチレンブロック共重合体を10〜20重量部をブレ
ンドし、さらに有機ハロゲン化物などの難燃剤を10〜
20重ご部を配合した樹脂組成物が使用されており、こ
れを所定の形状に成形し、電子線を照射して架橋させる
ようになっている。
Conventionally, this kind of flame-retardant crosslinkable resin composition has been prepared by adding 10 to 20 parts by weight of ethylene-vinyl acetate copolymer or styrene-ethylene-propylene-styrene block copolymer to 1001 parts of low-density polyethylene. and then add flame retardants such as organic halides to
A resin composition containing 20 parts by weight is used, which is molded into a predetermined shape and crosslinked by irradiation with an electron beam.

ところが、近年より高度の難燃性が要求されるようにな
り、難燃性向上のために多けの難燃剤を配合する必要が
生じている。
However, in recent years, higher flame retardancy has been required, and it has become necessary to incorporate a large amount of flame retardant in order to improve flame retardancy.

しかしながら、上述の配合組成の樹脂組成物において、
難燃剤を例えば40重量部程度にまで増量すると、組成
物の耐油性、耐溶剤性が著しく低下する問題があった。
However, in the resin composition having the above-mentioned composition,
When the amount of the flame retardant is increased to, for example, about 40 parts by weight, there is a problem in that the oil resistance and solvent resistance of the composition are significantly reduced.

〔問題点を解決するための手段〕[Means for solving problems]

この発明では、樹脂組成物のベースポリマーとして直鎖
状低密度ポリエチレンと低密度ポリエチレンとのブレン
ド物を使用することをその解決手段とした。
In this invention, the solution is to use a blend of linear low-density polyethylene and low-density polyethylene as the base polymer of the resin composition.

この発明の難燃架橋性樹脂組成物は、直鎖状低密度ポリ
エチレン(LLDP[E)と低密度ポリエチレン(1,
DPE) とtrmm比で1=2〜1:6の割合でブレ
ンドし、このブレンド物100重口部に対して、エチレ
ン−酢酸ビニル共重合体(EVA)またはスヂレンーエ
チレンープチレンースチレンブロック共重合体(SEB
S)を10〜20重吊部、難燃剤40〜150畷吊部、
架橋助剤5〜15重日部を配合したものである。
The flame-retardant crosslinkable resin composition of this invention comprises linear low-density polyethylene (LLDP[E) and low-density polyethylene (1,
DPE) at a trmm ratio of 1=2 to 1:6, and ethylene-vinyl acetate copolymer (EVA) or styrene-ethylene-butylene copolymer is added to 100 parts by weight of this blend. Styrene block copolymer (SEB
S) 10-20 heavy hanging part, flame retardant 40-150 hanging part,
It contains 5 to 15 parts of a crosslinking aid.

この発明において使用される直鎖状低密度ポリエチレン
としては、炭素数が3〜10の短鎖分枝を有する直鎖状
分子からなり、そのメルトインデックス(g/l 0分
、AS丁MD1238)が0゜1〜10で、密度が0.
91〜0.94g/cdの範囲のものが使用できる。ま
た、低密度ポリエチレンとしては、長鎖分枝を右する分
子からなり、そのメルトインデックスが0.1〜1.0
で、密度が0.91・〜0.949/cnlの範囲のも
のが使用される。この直鎖状低密度ポリエチレンと低密
度ポリエチレンとの混合比は重量比で1=2〜1:6の
範囲とされる。直鎖状低密度ポリエチレンがこの範囲よ
りも少ないと得られる樹脂組成物の耐油性、耐溶剤性の
改善が達せられず、またこの範囲より多いと樹脂組成物
の成形加工性が低下して不都合である。
The linear low-density polyethylene used in this invention consists of a linear molecule having 3 to 10 carbon atoms and short chain branches, and its melt index (g/l 0 min, AS Tine MD1238) is 0°1-10, density is 0.
Those in the range of 91 to 0.94 g/cd can be used. In addition, low-density polyethylene is composed of molecules with long chain branches and has a melt index of 0.1 to 1.0.
A material having a density in the range of 0.91 to 0.949/cnl is used. The mixing ratio of the linear low density polyethylene and the low density polyethylene is in the range of 1=2 to 1:6 by weight. If the amount of linear low-density polyethylene is less than this range, the oil resistance and solvent resistance of the resulting resin composition will not be improved, and if it is more than this range, the moldability of the resin composition will deteriorate, which is disadvantageous. It is.

この直鎖状低密度ポリエチレンと低密度ポリエチレンと
のブレンド物100181部に対して、エチレン−酢酸
ビニル共重合体またはスチレン−エチレン−ブチレン−
スチレンブロック共重合体が10〜20重量部配合され
る。このエチレン−酢酸ビニル共重合体としては、酢酸
ビニル(VA)の金山が15〜45重量%で、メルトイ
ンデックスが1〜100の範囲のものが好ましい。スチ
レン−エチレン−ブチレン−スチレンブロック共重合体
は、スチレン、エチレン、ブテン−1のブロック共重合
体であって、ここではスチレン金回15〜35%の組成
のものが好ましく、また密度が0.90〜0.94g/
cdのものが好ましい。エヂレンー酢酸ビニル共重合体
またはスチレン−エチレン−ブチレン−スチレンブロッ
ク共重合体の配合量が10重置部未満では組成物の伸び
が低下し、20重量部を越えると耐溶剤性、耐油性が低
下して不都合である。
For 100,181 parts of this blend of linear low density polyethylene and low density polyethylene, ethylene-vinyl acetate copolymer or styrene-ethylene-butylene copolymer
10 to 20 parts by weight of a styrene block copolymer is blended. The ethylene-vinyl acetate copolymer preferably has a vinyl acetate (VA) content of 15 to 45% by weight and a melt index of 1 to 100. The styrene-ethylene-butylene-styrene block copolymer is a block copolymer of styrene, ethylene, and butene-1, preferably having a composition of 15 to 35% styrene gold, and a density of 0. 90~0.94g/
CD is preferred. If the amount of ethylene-vinyl acetate copolymer or styrene-ethylene-butylene-styrene block copolymer is less than 10 parts by weight, the elongation of the composition will decrease, and if it exceeds 20 parts by weight, solvent resistance and oil resistance will decrease. This is inconvenient.

また、難燃剤が配合される。ここで用いられる難燃剤と
しては、トリクレジルホスフェート、トリス(β−クロ
ロエチル)ホスフェート、トリス(ジクロロプロピル)
ホスフェート、トリス(ジブロモプロピル)ホスフェー
ト、塩素化パラフィン、デカブロモフェニルエーテルな
どの有機系難燃剤や水酸化アルミニウム、水酸化マグネ
シウム。
Additionally, a flame retardant is blended. The flame retardants used here include tricresyl phosphate, tris (β-chloroethyl) phosphate, tris (dichloropropyl)
Organic flame retardants such as phosphate, tris(dibromopropyl) phosphate, chlorinated paraffin, decabromophenyl ether, aluminum hydroxide, and magnesium hydroxide.

ホウ酸亜鉛、三酸化アンチモン、赤リンなどが用いられ
、これらの2a以上の混合物も使用される。
Zinc borate, antimony trioxide, red phosphorus, etc. are used, and mixtures of these 2a or more are also used.

難燃剤の配合化が40重回部未満では、目的とする難燃
性(例えば、LJL規格5ub758.VW−1など)
を得ることができず、150重量部を越えると樹脂組成
物の機械的強度が低下し、実用性を失う。
If the flame retardant content is less than 40 parts, the desired flame retardance (for example, LJL standard 5ub758.VW-1) will not be achieved.
cannot be obtained, and if the amount exceeds 150 parts by weight, the mechanical strength of the resin composition decreases and practicality is lost.

さらに、架橋助剤が上記ブレンド物100重量部に対し
て5〜15@畿部配合される。この架橋助剤としては、
トリメタクリル酸トリメチロールプロパン、ジメタクリ
ル酸1,3−ブチレン、ジメタクリル酸トリエチレング
リコール、ジアリルフタレート、トリアリルシアヌレー
トなどの多官能重合性七ツマ−が使用される。この架橋
助剤の添加量が5重量部未満では架橋が十分になされず
耐溶剤性が不十分となり、15重股部を越えると難燃性
が低下する。
Further, 5 to 15 parts of a crosslinking aid is added to 100 parts by weight of the blend. As this crosslinking aid,
Polyfunctional polymerizable heptamers such as trimethylolpropane trimethacrylate, 1,3-butylene dimethacrylate, triethylene glycol dimethacrylate, diallyl phthalate, and triallyl cyanurate are used. If the amount of the crosslinking aid added is less than 5 parts by weight, sufficient crosslinking will not be achieved and the solvent resistance will be insufficient, and if it exceeds 15 parts, the flame retardance will decrease.

このような樹脂組成物に対しては、必要に応じ酸化防止
剤、銅害防止剤1M色剤、紫外線吸収剤。
For such a resin composition, an antioxidant, a copper damage inhibitor, a 1M colorant, and an ultraviolet absorber are added as necessary.

カーボンブラックなどの種々の配合剤をその目的に応じ
て添加することができる。
Various compounding agents such as carbon black can be added depending on the purpose.

そして、このような樹脂組成物は、通常の混合もしくは
混線手段によって混練され、押出成形等の成形法によっ
て所望の形状に成形されたのち、リニアツク、バンデグ
ラークなどの電子線熱1B置を用いて電子線が照射され
、架橋されたのち、使用に供される。このような配合の
組成物にあっては、電子線による架橋後において、引張
強度1゜0〜1.8kg/m、伸び200〜400%の
物性を有するものになる。
Then, such a resin composition is kneaded by ordinary mixing or cross-mixing means, molded into a desired shape by a molding method such as extrusion molding, and then subjected to electronic heating using a 1B electron beam heating equipment such as a linear arc or Vandegrack. After being irradiated with radiation and crosslinked, it is ready for use. After crosslinking with an electron beam, a composition having such a composition has physical properties such as a tensile strength of 1.0 to 1.8 kg/m and an elongation of 200 to 400%.

このような組成の難燃架橋性樹脂組成物にあっては、難
燃剤を条冷に含んでいるにもかかわらず、耐油性、耐溶
剤性が優れている。これは、ペースポリマーの一部に耐
油性、耐溶剤性に優れた直鎮状低密度ポリエチレンを使
用していることによる。
The flame-retardant crosslinkable resin composition having such a composition has excellent oil resistance and solvent resistance even though it contains a flame retardant in an air-cooled state. This is due to the fact that straight-cut low-density polyethylene, which has excellent oil and solvent resistance, is used as part of the pace polymer.

また、ベースポリマーの残部には加工性が良好な低密度
ポリエチレンを用いてい−るので、良好な加工性も維持
できる。したがって、この難燃架橋性樹脂組成物は高い
難燃性と加工性を保ちつつ、優れた耐溶剤性を有するも
のとなる。
Moreover, since low density polyethylene with good processability is used for the remainder of the base polymer, good processability can also be maintained. Therefore, this flame-retardant crosslinkable resin composition has excellent solvent resistance while maintaining high flame retardancy and processability.

〔実施例〕〔Example〕

以下、実施例を示して作用効果を明確にする。 Hereinafter, examples will be shown to clarify the effects.

別表に示す配合組成を右する樹脂組成物を混線、押出成
形し、20MRa dの電子線を照射して電子線架橋し
試験体とした。これら試験体について、押出加工性、難
燃性、引張強度、伸び、耐熱性、耐溶剤性を測定した。
A resin composition having a compounding composition shown in the attached table was crosslinked and extruded, and then irradiated with an electron beam of 20 MRad to be crosslinked with an electron beam to obtain a test specimen. For these test specimens, extrusion processability, flame retardancy, tensile strength, elongation, heat resistance, and solvent resistance were measured.

難燃性は、UL規格5ub758.VW−1によって試
験を行い評価した。また、耐熱性は試験体を158℃で
7日1jj放置し、放置後の引張強度および伸びを求め
、未加熱の試験体の引張強度および伸びと比較し、それ
ぞれの残率で評価した。
Flame retardancy is UL standard 5ub758. Tests and evaluations were made using VW-1. In addition, heat resistance was evaluated by leaving the test piece at 158° C. for 7 days, determining the tensile strength and elongation after being left, and comparing the results with the tensile strength and elongation of the unheated test piece, and evaluating the retention rate of each.

また、耐溶剤性については、試験体を試験油としてAS
TM#2オイルに100℃で96時間浸)δし、浸漬後
の引張強度および伸びを求め、未浸漬の試験体の引張強
度および伸びと比較し、それぞれの残率で表わした。押
出加工性は、良好な押出が可能なものをOとし、そうで
ないものを×とした。
In addition, regarding solvent resistance, AS
The specimen was immersed in TM#2 oil at 100° C. for 96 hours), the tensile strength and elongation after immersion were determined, compared with the tensile strength and elongation of the unimmersed specimen, and expressed as the respective residual percentages. For extrusion processability, those that could be extruded well were rated O, and those that could not be extruded were rated x.

結果を別表に示す。The results are shown in the attached table.

別表の結果から明らかなように、ペースポリマー中の直
鎖状低密度ポリエチレンが過多になると押出加工性が劣
り、低密度ポリエチレンが過多となると耐油性が低いこ
とがわかる。また、エヂレンー酢酸ビニル共重合体また
はスチレン−エチレン−ブチレン−スチレンブロック共
重合体が欠tJると樹脂組成物の伸びが不足することが
わかる。
As is clear from the results in the attached table, when the pace polymer contains too much linear low-density polyethylene, the extrusion processability is poor, and when the low-density polyethylene is too large, the oil resistance is poor. It is also seen that when the ethylene-vinyl acetate copolymer or the styrene-ethylene-butylene-styrene block copolymer is missing (tJ), the elongation of the resin composition is insufficient.

〔発明の効果〕〔Effect of the invention〕

以上説明したように、この発明の難燃架橋性樹脂組成物
は、そのベースポリマーに直鎖状低密度ポリエチレンと
低密度ポリエチレンとのブレンド物を使用しているので
、多量の難燃剤を配合して高い難燃性を付与しても耐溶
剤性、耐油性が良好であり、しかも良好な成形加工性を
も有するものとなる。
As explained above, the flame-retardant crosslinkable resin composition of the present invention uses a blend of linear low-density polyethylene and low-density polyethylene as its base polymer, and therefore contains a large amount of flame retardant. Even if high flame retardance is imparted, it has good solvent resistance and oil resistance, and also has good moldability.

よって、この難燃架橋性樹脂組成物は、高難燃性、高耐
熱性を要求される絶縁電線、絶縁チューブ等に好適なも
のとなる。
Therefore, this flame-retardant crosslinkable resin composition is suitable for insulated wires, insulated tubes, etc. that require high flame retardancy and high heat resistance.

Claims (1)

【特許請求の範囲】 直鎖状低密度ポリエチレンと低密度ポリエチレンとが1
:2〜1:6の重量比でブレンドされた樹脂分100重
量部に、 エチレン−酢酸ビニル共重合体またはスチレン−エチレ
ン−ブチレン−スチレンブロック共重合体10〜20重
量部、 難燃剤40〜150重量部、 架橋助剤5〜15重量部を配合してなる難燃架橋性樹脂
組成物。
[Claims] Linear low density polyethylene and low density polyethylene are 1
: 100 parts by weight of resin blended in a weight ratio of 2 to 1:6, 10 to 20 parts by weight of ethylene-vinyl acetate copolymer or styrene-ethylene-butylene-styrene block copolymer, and 40 to 150 parts by weight of flame retardant. A flame-retardant crosslinkable resin composition containing 5 to 15 parts by weight of a crosslinking aid.
JP291287A 1987-01-09 1987-01-09 Flame-retardant crosslinkable resin composition Pending JPS63172753A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP291287A JPS63172753A (en) 1987-01-09 1987-01-09 Flame-retardant crosslinkable resin composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP291287A JPS63172753A (en) 1987-01-09 1987-01-09 Flame-retardant crosslinkable resin composition

Publications (1)

Publication Number Publication Date
JPS63172753A true JPS63172753A (en) 1988-07-16

Family

ID=11542564

Family Applications (1)

Application Number Title Priority Date Filing Date
JP291287A Pending JPS63172753A (en) 1987-01-09 1987-01-09 Flame-retardant crosslinkable resin composition

Country Status (1)

Country Link
JP (1) JPS63172753A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0269543A (en) * 1988-09-02 1990-03-08 Fujikura Ltd Insulating composition and power cable
JPH02151642A (en) * 1988-12-05 1990-06-11 Sumitomo Electric Ind Ltd Flame-retardant resin composition
JPH02187439A (en) * 1989-01-17 1990-07-23 Sumitomo Electric Ind Ltd Flame-retardant resin composition
EP0490394A1 (en) * 1990-12-13 1992-06-17 Union Carbide Chemicals And Plastics Company, Inc. Crush resistant cable insulation
KR100575467B1 (en) * 1999-12-30 2006-05-03 삼성토탈 주식회사 Self-adhesive resin composition for protection film
WO2014106928A1 (en) * 2013-01-07 2014-07-10 矢崎総業株式会社 Thermally resistant crosslinked wire
US8956706B2 (en) 2009-12-29 2015-02-17 Saint-Gobain Performance Plastics Corporation Flexible tubing material and method of forming the material
US9987784B2 (en) 2012-06-06 2018-06-05 Saint-Gobain Performance Plastics Corporation Thermoplastic elastomer tubing and method to make and use same

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0269543A (en) * 1988-09-02 1990-03-08 Fujikura Ltd Insulating composition and power cable
JPH02151642A (en) * 1988-12-05 1990-06-11 Sumitomo Electric Ind Ltd Flame-retardant resin composition
JPH02187439A (en) * 1989-01-17 1990-07-23 Sumitomo Electric Ind Ltd Flame-retardant resin composition
EP0490394A1 (en) * 1990-12-13 1992-06-17 Union Carbide Chemicals And Plastics Company, Inc. Crush resistant cable insulation
US5180889A (en) * 1990-12-13 1993-01-19 Union Carbide Chemicals & Plastics Technology Corporation Crush resistant cable insulation
KR100575467B1 (en) * 1999-12-30 2006-05-03 삼성토탈 주식회사 Self-adhesive resin composition for protection film
US8956706B2 (en) 2009-12-29 2015-02-17 Saint-Gobain Performance Plastics Corporation Flexible tubing material and method of forming the material
US9133332B2 (en) 2009-12-29 2015-09-15 Saint-Gobain Performance Plastics Corporation Flexible tubing material and method of forming the material
US9670351B2 (en) 2009-12-29 2017-06-06 Saint-Gobain Performance Plastics Corporation Flexible tubing material and method of forming the material
US9987784B2 (en) 2012-06-06 2018-06-05 Saint-Gobain Performance Plastics Corporation Thermoplastic elastomer tubing and method to make and use same
WO2014106928A1 (en) * 2013-01-07 2014-07-10 矢崎総業株式会社 Thermally resistant crosslinked wire

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