JPH03227337A - Flame retardant composition and flame retardant cable - Google Patents

Flame retardant composition and flame retardant cable

Info

Publication number
JPH03227337A
JPH03227337A JP2021101A JP2110190A JPH03227337A JP H03227337 A JPH03227337 A JP H03227337A JP 2021101 A JP2021101 A JP 2021101A JP 2110190 A JP2110190 A JP 2110190A JP H03227337 A JPH03227337 A JP H03227337A
Authority
JP
Japan
Prior art keywords
flame retardant
flame
ethylene
composition
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.)
Pending
Application number
JP2021101A
Other languages
Japanese (ja)
Inventor
Izumi Ishikawa
石川 泉
Isao Takahashi
功 高橋
Hideo Sunatsuka
砂塚 英夫
Mitsutaka Tanida
谷田 光隆
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 JP2021101A priority Critical patent/JPH03227337A/en
Publication of JPH03227337A publication Critical patent/JPH03227337A/en
Pending legal-status Critical Current

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

Abstract

PURPOSE:To obtain the subject composition, having high flame retardance and excellent physical properties and useful as electric wires, cable covering, connecting materials, etc., by blending a polyolefin (copolymer) with a maleimide-based compound and metal hydroxide in a specific proportion. CONSTITUTION:The objective composition obtained by blending 100 pts.wt. polyolefin (e.g. PE or PP) or a copolymer (e.g. ethylene-vinyl acetate) of ethylene and other monomers with 0.1-50 pts.wt. maleimide-based compound (e.g. N- phenylenemaleimide) and 10-150 pts.wt. metal hydroxide (e.g. magnesium hydroxide or aluminum hydroxide).

Description

【発明の詳細な説明】 [産業上の利用分野〕 この発明はポリオレフィン系樹脂を主体とした難燃性組
成物、特に電線やケーブル被覆材料、接続材料として高
い難燃化を達成できる難燃性組成物およびこれを用いた
ケーブルに関する。
[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a flame-retardant composition based on a polyolefin resin, particularly a flame-retardant composition that can achieve high flame retardancy as an electric wire or cable covering material, or as a connection material. The present invention relates to a composition and a cable using the same.

′従来の技術) ポリオレフィンまたはエチレンと他のモノマーとの共重
合体は電気特性および加工性もよいことから電線ケーブ
ルの分野では広く用いられているか、従来これを難燃化
するにはハロゲン系難燃剤や水酸化アルミニウム、水酸
化マグネシウム等の難燃剤を配合したものか知られてい
る。
'Prior art) Polyolefins or copolymers of ethylene and other monomers have good electrical properties and processability, so they are widely used in the field of electric wires and cables. It is known that it contains flame retardants such as flame retardants and aluminum hydroxide and magnesium hydroxide.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

組成物にハロゲン系難燃化剤を添加する場合は、火災時
に機器を腐食し、健康にも有害なハロゲンガスの発生が
あり、水酸化アルミニウム、水酸化マグネシウム等の難
燃剤を配合したものでは、これらの水酸化物が比較的難
燃効果か低いために多量に添加する必要があり、組成物
は引張特性、耐寒性の劣化か大きく改良が求められてい
た。
If a halogen-based flame retardant is added to the composition, it may corrode equipment in the event of a fire and generate halogen gas, which is harmful to health. Since these hydroxides have a relatively low flame retardant effect, it is necessary to add them in large amounts, and the composition has been in need of significant improvement in terms of deterioration in tensile properties and cold resistance.

本発明は上記の問題を解決することを目的とするもので
ある。
The present invention aims to solve the above problems.

〔課題を解決するための手段〕[Means to solve the problem]

この発明においては、マレイミド系化合物と金属水酸化
物との併用によって、上記課題を解決するように1f− 〔作用〕 マレイミド系化合物と金属水酸化物との併用により、そ
の相乗効果によって高い難燃性が得られ、このため金属
水酸化物の配合量を低めることか可能となって、組成物
の引張特性や耐寒性の低下を抑えることができる。
In this invention, the above problem is solved by using a maleimide compound and a metal hydroxide in combination. 1f- [Function] By using a maleimide compound and a metal hydroxide in combination, the synergistic effect results in high flame retardancy. This makes it possible to reduce the amount of metal hydroxide added, thereby suppressing deterioration in the tensile properties and cold resistance of the composition.

以下、この発明の詳細な説明する。The present invention will be explained in detail below.

この発明の難燃性組成物は、ポリオレフィンまたはエチ
レンと他のモノマーとの共重合体100重量部に対し、
マレイミド系化合物0.1〜50重量部、金属水酸化物
10〜150重量部を配合したものであり、また難燃性
ケーブルは、この難燃性組成物からなる絶縁体あるいは
シースもしくはその両者を有するものである。
The flame retardant composition of the present invention contains 100 parts by weight of a polyolefin or a copolymer of ethylene and other monomers.
It contains 0.1 to 50 parts by weight of a maleimide compound and 10 to 150 parts by weight of a metal hydroxide, and the flame-retardant cable is made of an insulator or a sheath made of this flame-retardant composition, or both. It is something that you have.

この発明で用いられるポリオレフィンまたはエチレンと
他のモノマーとの共重合体としては、高E[ポリエチレ
ン(HDPE)、低密度ポリエチレン(LDPE)、直
鎖状低密度ポリエチレン(LLDPE)なとのポリエチ
レン、ポリプロピレン、エチレン−プロピレン共電=体
、xtし7−41:Illビニル共重合体(EVA)、
エチレン−エチルアクリレート共重合体(EEA)、エ
チレン−アクリル酸共重合体(EAA)、エチレン−プ
ロピレン−ジエン共重合体(EPDM)などが用いられ
、これらポリマーの単独もしくは2種以上のブレンドポ
リマーが用いられる。ブレンドポリマーにおけるブレン
ド比は任意である。
The polyolefins or copolymers of ethylene and other monomers used in this invention include polyethylenes with high E [polyethylene (HDPE), low density polyethylene (LDPE), linear low density polyethylene (LLDPE), polypropylenes] , ethylene-propylene coelectronic body, xt 7-41: Ill vinyl copolymer (EVA),
Ethylene-ethyl acrylate copolymer (EEA), ethylene-acrylic acid copolymer (EAA), ethylene-propylene-diene copolymer (EPDM), etc. are used, and single or blended polymers of two or more of these polymers are used. used. The blend ratio in the blend polymer is arbitrary.

また、ここで使用されるマレイミド系化合物としては、
次の一般式(1)〜(III)で表わされる化合物であ
り、その融点が40〜200°Cの範囲にあるものが用
いられる。
In addition, the maleimide compounds used here include:
Compounds represented by the following general formulas (1) to (III) and having a melting point in the range of 40 to 200°C are used.

たはアルキル基もしくはハロゲンを示す。〕これらのマ
レイミド系化合物の具体例としては、N−フェニルマレ
イミド(1点87〜90℃)、N−(2−メチルフェニ
ル)マレイミド(融点73〜76℃)、N−(2,6−
ジニチルフエニル)マレイミド(融点73〜76°C)
 、N−(2−クロロフェニル)マレイミド(M点72
〜75℃)、N−シクロへキシルマレイミド(融点87
°C)、N−ラウリルマレイミド(融点51〜56°C
)などが挙げられる。このマレイミド系化合物はマイク
ロカプセル化したものを使用することもでき、成形加工
時のマレイミド系化合物の揮散を防止できて好ましい。
or an alkyl group or a halogen. ] Specific examples of these maleimide compounds include N-phenylmaleimide (1 point 87-90°C), N-(2-methylphenyl)maleimide (melting point 73-76°C), N-(2,6-
(dinitylphenyl)maleimide (melting point 73-76°C)
, N-(2-chlorophenyl)maleimide (M point 72
~75°C), N-cyclohexylmaleimide (melting point 87
°C), N-laurylmaleimide (melting point 51-56 °C)
), etc. The maleimide compound may be microencapsulated, which is preferable since volatilization of the maleimide compound can be prevented during molding.

このマレイミド系化合物の配合量は、上記ポリオレフィ
ンまたはエチレンと他のモノマーとの共重合体100重
量部に対してO,1〜50重量部とされる。0.1重量
部未満では難燃効果か不十分であり、50重量部を越え
ると引張特性、耐寒性等の物性が低下して好ましくない
The blending amount of the maleimide compound is 1 to 50 parts by weight based on 100 parts by weight of the polyolefin or copolymer of ethylene and other monomer. If it is less than 0.1 parts by weight, the flame retardant effect will be insufficient, and if it exceeds 50 parts by weight, physical properties such as tensile properties and cold resistance will deteriorate, which is not preferable.

さらに、金属水酸化物としては、水酸化マグネシウム(
Mg(○H)?)、水酸化アルミニウム(A C(OH
)3) 、水酸化カルシウム(Ca(○H)2)などが
挙げられる。この金属水酸化物の配合量はポリオレフィ
ンまたはエチレンと他のモノマーとの共重合体100重
量部に対して10〜150重量部とされ、10重量部未
満では難燃効果が不十分であり、150重量部を越える
と物性低下が大きくなって不都合となる。
Furthermore, as a metal hydroxide, magnesium hydroxide (
Mg(○H)? ), aluminum hydroxide (AC(OH
)3), calcium hydroxide (Ca(○H)2), and the like. The amount of metal hydroxide blended is 10 to 150 parts by weight per 100 parts by weight of the polyolefin or copolymer of ethylene and other monomers, and if it is less than 10 parts by weight, the flame retardant effect is insufficient; If the amount exceeds 1 part by weight, the physical properties will deteriorate significantly, which is disadvantageous.

この難燃性組成物の難燃化機構は、ペースポリマーを構
成するポリオレフィンまたはエチレンと他のモノマーと
の共重合体が燃焼する際の低分子量化をマレイミド系化
合物が抑制し、さらに金属水酸化物の発水分解(吸熱反
応)が複合して起り、それぞれか単独で用いられたとき
に生じる効果を上回る相乗効果を奏する。
The flame retardant mechanism of this flame retardant composition is that the maleimide compound suppresses the reduction in molecular weight when the polyolefin or copolymer of ethylene and other monomers constituting the pace polymer burns, and the Hydrolytic decomposition (endothermic reaction) of substances occurs in combination, producing a synergistic effect that exceeds the effect produced when each is used alone.

また、この難燃性組成物には、必要に応じて、リン系難
燃剤、老化防止剤、カーボンブラック、顔料などを添加
することかできる。さらに、有機過酸化物を添加して架
橋型組成物としてもよい。
Further, a phosphorus-based flame retardant, an anti-aging agent, carbon black, a pigment, etc. can be added to this flame-retardant composition, if necessary. Furthermore, an organic peroxide may be added to form a crosslinked composition.

この発明の難燃性ケーブルは、上述の難燃性組成物をそ
の絶縁体または/−スあるいはその両者に用いたもので
ある。高い電気絶縁性を求められるケーブルでは/−ス
にのみこの難燃性組成物を用いることか好ましい。この
難燃性組成物は良好な加工性を有しているので、通常の
押出被覆法によって絶縁体あるいはソースとすることか
できる。
The flame-retardant cable of the present invention uses the above-mentioned flame-retardant composition for its insulator and/or base. In cables that require high electrical insulation, it is preferable to use this flame retardant composition only in the base. Since this flame retardant composition has good processability, it can be made into an insulator or source by conventional extrusion coating methods.

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

(実施例) 第1表に示す配合組成の組成物を調製し、押出成形して
/−ト状の試験片を得た。この試験片について、酸素指
数および耐寒性を測定した。耐寒性は、J Is−に−
6760により、−40’Cにおいて試験片が破壊しな
いものを○とし、破壊したものを×として表わした。
(Example) A composition having the composition shown in Table 1 was prepared and extruded to obtain a plate-shaped test piece. The oxygen index and cold resistance of this test piece were measured. Cold resistance is J Is-
6760, those in which the test piece did not break at -40'C were marked ○, and those in which it was broken were marked x.

結果を第1表に併せて示した。The results are also shown in Table 1.

第1表の結果から明らかように、この発明の難燃性組成
物は、高い難燃性を有するとともに金属水酸化物の配合
量を削減できるので、機械的特性、耐寒性も良好である
ことがわかる。
As is clear from the results in Table 1, the flame retardant composition of the present invention has high flame retardancy and can reduce the amount of metal hydroxide, so it has good mechanical properties and cold resistance. I understand.

〔発明の効果〕〔Effect of the invention〕

以上の説明から明らかなように、この発明の難燃性組成
物は、高い難燃性と良好な物理的性質を併せて有するも
のであり、難燃性ケーブルも良好な難燃性および機械的
特性を有するものとなる。
As is clear from the above description, the flame-retardant composition of the present invention has both high flame retardancy and good physical properties, and the flame-retardant cable also has good flame retardancy and mechanical properties. It becomes something with characteristics.

Claims (2)

【特許請求の範囲】[Claims] (1)ポリオレフィンまたはエチレンと他のモノマーと
の共重合体100重量部に対し、マレイミド系化合物0
.1〜50重量部、金属水酸化物10〜150重量部を
配合してなることを特徴とする難燃性組成物。
(1) 0 maleimide compounds per 100 parts by weight of polyolefin or copolymer of ethylene and other monomers
.. 1. A flame retardant composition comprising 1 to 50 parts by weight and 10 to 150 parts by weight of a metal hydroxide.
(2)請求項(1)記載の難燃性組成物からなる絶縁体
/あるいはシースもしくは両者を有することを特徴とす
る難燃性ケーブル。
(2) A flame-retardant cable comprising an insulator and/or a sheath made of the flame-retardant composition according to claim (1).
JP2021101A 1990-01-31 1990-01-31 Flame retardant composition and flame retardant cable Pending JPH03227337A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2021101A JPH03227337A (en) 1990-01-31 1990-01-31 Flame retardant composition and flame retardant cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2021101A JPH03227337A (en) 1990-01-31 1990-01-31 Flame retardant composition and flame retardant cable

Publications (1)

Publication Number Publication Date
JPH03227337A true JPH03227337A (en) 1991-10-08

Family

ID=12045482

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2021101A Pending JPH03227337A (en) 1990-01-31 1990-01-31 Flame retardant composition and flame retardant cable

Country Status (1)

Country Link
JP (1) JPH03227337A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0794028A (en) * 1993-09-24 1995-04-07 Hitachi Cable Ltd Polypropylene-insulated electric wire
CN103524844A (en) * 2013-09-30 2014-01-22 芜湖航天特种电缆厂 High-temperature-resistant cable sheath material and preparation method thereof
CN106750947A (en) * 2016-12-23 2017-05-31 安徽天元电缆有限公司 A kind of novel environment friendly anti-electrostatic fire retardant cable material

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0794028A (en) * 1993-09-24 1995-04-07 Hitachi Cable Ltd Polypropylene-insulated electric wire
CN103524844A (en) * 2013-09-30 2014-01-22 芜湖航天特种电缆厂 High-temperature-resistant cable sheath material and preparation method thereof
CN103524844B (en) * 2013-09-30 2016-05-04 芜湖航天特种电缆厂 A kind of high temperature resistant protective cover material and preparation method thereof for cable
CN106750947A (en) * 2016-12-23 2017-05-31 安徽天元电缆有限公司 A kind of novel environment friendly anti-electrostatic fire retardant cable material

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