JPH02274742A - Flame-retardant electrical insulating composition - Google Patents
Flame-retardant electrical insulating compositionInfo
- Publication number
- JPH02274742A JPH02274742A JP1097234A JP9723489A JPH02274742A JP H02274742 A JPH02274742 A JP H02274742A JP 1097234 A JP1097234 A JP 1097234A JP 9723489 A JP9723489 A JP 9723489A JP H02274742 A JPH02274742 A JP H02274742A
- Authority
- JP
- Japan
- Prior art keywords
- flame
- flame retardant
- retardant
- ethylene
- examples
- 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
Links
- 239000003063 flame retardant Substances 0.000 title claims abstract description 18
- 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 abstract description 17
- 239000000203 mixture Substances 0.000 title claims description 13
- 229920000098 polyolefin Polymers 0.000 claims abstract description 10
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 claims abstract description 9
- PIJPYDMVFNTHIP-UHFFFAOYSA-L lead sulfate Chemical compound [PbH4+2].[O-]S([O-])(=O)=O PIJPYDMVFNTHIP-UHFFFAOYSA-L 0.000 claims abstract description 7
- 239000012796 inorganic flame retardant Substances 0.000 claims description 11
- 238000010292 electrical insulation Methods 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 abstract description 7
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 abstract description 3
- 229920001577 copolymer Polymers 0.000 abstract description 3
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 abstract description 3
- 239000000347 magnesium hydroxide Substances 0.000 abstract description 3
- 229910001862 magnesium hydroxide Inorganic materials 0.000 abstract description 3
- 229920002943 EPDM rubber Polymers 0.000 abstract description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 abstract description 2
- 239000000920 calcium hydroxide Substances 0.000 abstract description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 abstract description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 abstract description 2
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 abstract description 2
- 239000001095 magnesium carbonate Substances 0.000 abstract description 2
- 229910000021 magnesium carbonate Inorganic materials 0.000 abstract description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 abstract 2
- 239000004698 Polyethylene Substances 0.000 abstract 1
- 238000013329 compounding Methods 0.000 abstract 1
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 abstract 1
- 229960001545 hydrotalcite Drugs 0.000 abstract 1
- 229910001701 hydrotalcite Inorganic materials 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 description 7
- 150000002367 halogens Chemical class 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 229910052736 halogen Inorganic materials 0.000 description 5
- 238000004132 cross linking Methods 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- -1 polyethylene, ethylene vinyl acetate Polymers 0.000 description 4
- 231100000331 toxic Toxicity 0.000 description 4
- 230000002588 toxic effect Effects 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 239000003963 antioxidant agent Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000003431 cross linking reagent Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 description 1
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- XQVWYOYUZDUNRW-UHFFFAOYSA-N N-Phenyl-1-naphthylamine Chemical compound C=1C=CC2=CC=CC=C2C=1NC1=CC=CC=C1 XQVWYOYUZDUNRW-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- WXCZUWHSJWOTRV-UHFFFAOYSA-N but-1-ene;ethene Chemical compound C=C.CCC=C WXCZUWHSJWOTRV-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- STVZJERGLQHEKB-UHFFFAOYSA-N ethylene glycol dimethacrylate Chemical compound CC(=C)C(=O)OCCOC(=O)C(C)=C STVZJERGLQHEKB-UHFFFAOYSA-N 0.000 description 1
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 description 1
- 238000007765 extrusion coating Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 150000002366 halogen compounds Chemical class 0.000 description 1
- PYGSKMBEVAICCR-UHFFFAOYSA-N hexa-1,5-diene Chemical group C=CCCC=C PYGSKMBEVAICCR-UHFFFAOYSA-N 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000005865 ionizing radiation Effects 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- DZCCLNYLUGNUKQ-UHFFFAOYSA-N n-(4-nitrosophenyl)hydroxylamine Chemical compound ONC1=CC=C(N=O)C=C1 DZCCLNYLUGNUKQ-UHFFFAOYSA-N 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002530 phenolic antioxidant Substances 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
- Insulated Conductors (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、燃焼時に有害なハロゲン系カスを発性しない
難燃性電気絶縁組成物、特に電線・ケーブルの絶縁材料
やシース材料への適用に好適な難燃性電気絶縁組成物に
関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention is a flame-retardant electrical insulation composition that does not generate harmful halogen-based scum when burned, and is particularly applicable to insulating materials and sheath materials for electric wires and cables. The present invention relates to a flame-retardant electrical insulation composition suitable for.
［従来の技術］
電気絶縁性に優れているところから多用されているポリ
オレフィンをはじめ、従来電線・ケーブルの絶縁体やシ
ースとして使用されてきた材料は、いずれも可燃性のも
のであり、火災が発生した場合には、電線・ケーブルの
配線系を伝わって火災か拡大する例か多く、難燃性の電
線・ケーブルへの要請かにわかに高まってきた。とくに
、最近のすう勢として原子力発電所用電線・ケーブル、
車両用電線・ケーブル、船舶用電線・ケーブルなどには
、ＩＥＥＥ（米国電気電子技術者協会）規格３８３のＶ
ＴＦＴ’（垂直ｊ・レイ燃焼試験）に規定されている実
際の布設状況を模擬した多条布設の燃焼試験に合格する
ことを条件とする高度の難燃性か要望されるようになっ
てきた。[Conventional technology] Materials traditionally used as insulators and sheaths for electric wires and cables, including polyolefin, which is widely used due to its excellent electrical insulation properties, are all flammable and can cause fires. When a fire occurs, there are many cases where the fire spreads through the wiring system of electric wires and cables, and the demand for flame-retardant electric wires and cables has suddenly increased. In particular, as a recent trend, electric wires and cables for nuclear power plants,
IEEE (Institute of Electrical and Electronics Engineers) standard 383 V is used for vehicle wires and cables, marine wires and cables, etc.
There is a growing demand for high flame retardancy, which is conditional on passing a multi-line installation combustion test that simulates actual installation conditions as stipulated in the TFT' (Vertical J-Ray Combustion Test). .
ポリオレフィンを難燃化する方法としてはハロゲン含有
化合物等を混和する方法が一般に採用されてきている。As a method of making polyolefin flame retardant, a method of incorporating a halogen-containing compound or the like has generally been adopted.
しかし、このような難燃性電気絶縁組成物は、火災時に
不燃性のハロゲン系カス等を多量に発生させ、それによ
り電線・ケーブルの周囲における酸素を遮断し燃焼を防
止しようとするものであり、十分な難燃特性を発揮する
ものの、その折発生するハロゲン系カス等は例えは塩化
水素のように有毒なものか多く、このような有毒カスを
含んだ煙を多量に発生させるため見通しか悪くなり、火
災発生の際の避難行動や消火活動を妨り′、あるいは前
記有毒カスか人体に悪影響を与えるなどして二次災害の
おそれもあり、さらにはハロゲン系カスか空気中の水分
と反応し、ハロゲン化水素酸となって配電盤を腐食させ
るおそれもある。However, such flame-retardant electrical insulation compositions generate a large amount of nonflammable halogen-based scum in the event of a fire, thereby blocking oxygen around electric wires and cables and preventing combustion. Although it exhibits sufficient flame-retardant properties, the halogen-based scum generated during this process is often toxic, such as hydrogen chloride, and there is no prospect of it generating a large amount of smoke containing such toxic scum. This may hinder evacuation and firefighting efforts in the event of a fire, or the toxic residue may have a negative impact on the human body, leading to secondary disasters.Furthermore, the halogen residue may interact with moisture in the air. There is also a risk that it will react and become hydrohalic acid, which will corrode the switchboard.
そこで、上記ハロゲン系化合物に代えて、水酸化アルミ
ニウムや水酸化マグネシウム等の無機系難燃剤を混和し
、上記火災時の安全性を重視しな離燃性電気絶縁組成物
か提案され、注目を集めている。Therefore, instead of the above-mentioned halogen compounds, it has been proposed that an inorganic flame retardant such as aluminum hydroxide or magnesium hydroxide be mixed in to create a flammable electrical insulation composition that does not emphasize safety in the event of a fire. are collecting.
［発明か解決しようとする課題］
上記無機系難燃剤を混和した難燃性組成物は、火災時に
当該水酸化物か結晶水を放出する際の吸熱作用を難燃効
果として利用するものであり、発煙性や毒性あるいは腐
食性は極めて少ない。[Invention or Problem to be Solved] The flame retardant composition containing the above-mentioned inorganic flame retardant utilizes the endothermic action when releasing the hydroxide or water of crystallization in the event of a fire as a flame retardant effect. , has very little fuming, toxicity or corrosiveness.
しかしながら、無機系難燃剤は難燃効果が小さいなめ、
ＪＩ′Ｌにポリマーに混和したたけでは燃焼時に溶融滴
下するというドリップ現象かみられ、高度の難燃性を付
与することは難しい。However, inorganic flame retardants have a small flame retardant effect,
When JI'L is mixed with a polymer, a drip phenomenon occurs in which the mixture melts and drips during combustion, making it difficult to impart a high degree of flame retardancy.
従って、高度の難燃性を付与するためには無機系難燃剤
を多量にｈ口えることか必要であり、その結果として得
られる絶縁体やシースの引張特性の低下を招いたり、押
出加工性か低下するという問題がある。Therefore, in order to impart a high degree of flame retardancy, it is necessary to add a large amount of inorganic flame retardant, which may result in a decrease in the tensile properties of the resulting insulator or sheath, or may cause a decrease in extrusion processability. There is a problem that the amount of water decreases.
本発明の目的は、上記したような従来技術の問題点を解
消し、無機系難燃剤を混和し高度の斡燃性を発揮させる
と共に、その根株的特性および押出加工性を保持し得る
難燃性電気絶縁組成物を提供しようとするものである。The purpose of the present invention is to solve the problems of the prior art as described above, and to produce a flame retardant that exhibits a high degree of flammability by incorporating an inorganic flame retardant, and that maintains its root characteristics and extrudability. The object of the present invention is to provide an electrically insulating composition.
［課題を解決するだめの手段１
本発明は、ポリオレフィン１００重綾部に対して無機系
難燃剤５０〜３００重量部、及び硫酸鉛あるいは亜硫酸
鉛０，５重量部以上を含有ぜしめたものである６
本発明において、ポリオレフィンとしては、エチレンプ
ロピレンコポリマー、エチレンプロピレンジエンターポ
リマー、ポリエチレン、エチレン酢酸ビニルコポリマー
、エチレンエチルアクリレートコポリマー、エチレンブ
テンコポリマー、エチレンブテンシエンターポリマー等
が挙げられ、これらは単独使用又は２種以上の併用か可
能である。[Means for solving the problem 1] The present invention contains 50 to 300 parts by weight of an inorganic flame retardant and 0.5 parts by weight or more of lead sulfate or lead sulfite per 100 parts of polyolefin. 6 In the present invention, examples of the polyolefin include ethylene propylene copolymer, ethylene propylene diene terpolymer, polyethylene, ethylene vinyl acetate copolymer, ethylene ethyl acrylate copolymer, ethylene butene copolymer, ethylene butene terpolymer, etc., which may be used alone or in combination. It is possible to use two or more types together.
無機系離燃剤としては、水酸化アルミニウム、水酸化マ
グネシウム、塩基性炭酸マグネシウム、水酸化カルシウ
ム、ハイドロタルサイト類等が挙げられる。無機系難燃
剤の含有量は、ポリオレフィン１００重量部に対して５
０〜３００重量部の範囲とする必要があり、５０重量部
未満では目的とする難燃性を付与できす、３００重１部
を越えると加工性か著しく低下して押出成形が困難にな
る。Examples of inorganic flame release agents include aluminum hydroxide, magnesium hydroxide, basic magnesium carbonate, calcium hydroxide, hydrotalcites, and the like. The content of inorganic flame retardant is 5 parts by weight per 100 parts by weight of polyolefin.
The amount must be in the range of 0 to 300 parts by weight; if it is less than 50 parts by weight, the desired flame retardancy cannot be imparted, and if it exceeds 300 parts by weight, the processability will be significantly reduced and extrusion molding will become difficult.
本発明においては、無機系難燃剤に加えて硫酸鉛あるい
は亜硫酸鉛を併用する。それによって燃焼時のドリップ
を防止でき、難燃性を大ＩＪに向上させることかできる
ｆ酸鉛としては、ＨＢ＃１．ＯＯＯ，ＨＢ＃２０００
．（堺化学工業（株）の商品名ｉ ＴＳ−１００，ＴＳ
ｌｏｏＣ，ＴＳ−２０００（菊池色素工業（株）の商品
名）、Ｔ−８（ｆＷｊ田化工（株）の商品名）、５ＴＡ
ＢＩＮＥＸ ＴＣ、５ＴＡＢＩＮＥＸ ＴＣＡ、
５ＴＡＢＪＮＥＸ ＴＣ８（水源化学工業（株）の
商品名）等が挙げられる。また、亜硫酸鉛としては、Ｎ
Ｂ（堺化学工業（株）の商品名）、シナカレットＳＸ（
品用化工（株）の商品名）等が挙げられる。In the present invention, lead sulfate or lead sulfite is used in addition to the inorganic flame retardant. This prevents dripping during combustion and improves flame retardancy to a large IJ.As f-acid lead, HB#1. OOO, HB#2000
．． (Product name of Sakai Chemical Industry Co., Ltd. i TS-100, TS
looC, TS-2000 (trade name of Kikuchi Color Industries Co., Ltd.), T-8 (trade name of fWjda Kako Co., Ltd.), 5TA
BINEX TC, 5TABINEX TCA,
Examples include 5TABJNEX TC8 (trade name of Suigen Chemical Industry Co., Ltd.). In addition, as lead sulfite, N
B (trade name of Sakai Chemical Industry Co., Ltd.), Shinakalet SX (
(product name of Shinyo Kako Co., Ltd.), etc.
これら硫＃鉛あるいは亜硫酸鉛はポリオレフィン１００
重量部に対して０．５重量部′以上配合する必要かあり
、０．５重量部未満では燃焼時のドリップを防止できず
、難燃性が不十分となる２本発明においては、上記成分
に加えて架橋剤、酸化防止剤、滑剤、軟化剤、分散剤等
を適宜添加してもよい。架橋剤としては、ジクミルパー
オキサイド、３−ビス（ｔ−ブチルパーオキシイソプロ
ピル）、ベンゼンに代表される有機過酸化物が適当であ
り、これに架橋助剤として、硫黄、エチレンジメタクリ
レート、ジアリルフタレート、Ｐキノンジオキシム等を
併用してもよい７又、電子線等の電離性放射線による架
橋の場合は、架橋助剤としてトリメチロールプロパント
リメリテート、トリアリルイソシアヌレート等の反応性
のモノマーを添加するのが一般的である。酸化防止剤と
しでは、フェニル−α−ナフチルアミン、Ｎ、Ｎ−ジ−
β−ナフチル−Ｐ−フェニレンジアミン等のアミン系酸
化防止剤、２，６−ジーｔ−ブチル１１−メチルフェノ
ール、ヒンダードフエノール等のフェノール系酸化防止
剤が挙けられる。These sulfur #lead or lead sulfite are polyolefin 100
It is necessary to mix 0.5 parts by weight or more with respect to parts by weight; if it is less than 0.5 parts by weight, drips during combustion cannot be prevented and the flame retardance is insufficient.2 In the present invention, the above-mentioned components In addition, crosslinking agents, antioxidants, lubricants, softeners, dispersants, etc. may be added as appropriate. Suitable crosslinking agents include organic peroxides such as dicumyl peroxide, 3-bis(t-butylperoxyisopropyl), and benzene, and crosslinking aids such as sulfur, ethylene dimethacrylate, and diallyl. Phthalate, P-quinone dioxime, etc. may be used in combination. In the case of crosslinking by ionizing radiation such as electron beam, reactive monomers such as trimethylolpropane trimellitate and triallylisocyanurate are used as crosslinking aids. It is common to add. Examples of antioxidants include phenyl-α-naphthylamine, N,N-di-
Examples include amine antioxidants such as β-naphthyl-P-phenylenediamine, and phenolic antioxidants such as 2,6-di-t-butyl-11-methylphenol and hindered phenol.
［実施例コ 以下に、本発明について実施例を参照し説明する。[Example code] The present invention will be described below with reference to Examples.
第１表に示す実施例１〜６および比較例１〜５の各供試
配合成分よりなる組成物を用い、第１表下欄に示す評価
項目について評価試験を行なった。Using compositions consisting of the test components of Examples 1 to 6 and Comparative Examples 1 to 5 shown in Table 1, an evaluation test was conducted on the evaluation items shown in the lower column of Table 1.
各配合成分を１００℃に保持された６インチロールに投
入してロール混練を行ない、混練後１２０℃に保持され
た４０ｍ／ｍ押出ｆｉ（Ｌ／Ｄ２５）を用い、外径５．
３＋ｎｍの絶縁線心を３本撚合ぜた外周に２．０＋ｎｍ
の厚さで押出被覆した。Each compounded component was put into a 6-inch roll kept at 100°C and kneaded by rolls, and after kneading, using a 40 m/m extrusion fi (L/D 25) kept at 120°C, an outer diameter of 5.
The outer circumference of three 3+nm insulated wire cores twisted together is 2.0+nm.
Extrusion coated to a thickness of .
尚、実施例１．４．５及び比較例１については押出被覆
に続いて１３ｋｇ／ｃＪの水蒸気雰囲気中に３分間保持
して架橋しな。In addition, in Examples 1.4.5 and Comparative Example 1, after extrusion coating, the samples were kept in a steam atmosphere of 13 kg/cJ for 3 minutes for crosslinking.
難燃性評価は次のようにして行なった。長さ２ｍのケー
ブルを垂直に８本ならべ、下から７０．０００Ｂ”Ｉ”
Ｕの炎を２０分間当て、自己消炎ずれは合格であり、自
己消炎せず全焼するものは不合格とした。Flame retardancy evaluation was performed as follows. Line up 8 cables of 2m length vertically, 70.000B"I" from the bottom
A flame of U was applied for 20 minutes, and the self-extinguishing difference was considered to be a pass, and the one that did not self-extinguish and burned completely was judged to be a failure.
第１表に各供試組成物の評価結果を示す。Table 1 shows the evaluation results for each sample composition.
表からも明らかな通り、本発明に係る実施例１〜６はい
ずれも難燃性に合格し、押出加工性に優れている。これ
に対し、無機系難燃剤の含有量か規定値以下の比較例１
は難燃性が不合格であり、規定値以上の比較例２は押出
性が悪く成形不可能であった。また、硫酸鉛、亜硫酸鉛
の含有量か規定値以下の比較例３．４．５はドリップか
生じ雑・燃性において不合格であった。As is clear from the table, Examples 1 to 6 according to the present invention all passed the flame retardant test and were excellent in extrusion processability. On the other hand, Comparative Example 1 where the content of inorganic flame retardant is below the specified value
The flame retardance of Comparative Example 2, which was higher than the specified value, had poor extrudability and could not be molded. In addition, Comparative Examples 3.4.5 in which the contents of lead sulfate and lead sulfite were below the specified values were rejected in terms of miscellaneous drips and flammability.
［発明の効果］
以上説明してきた通り、本発明に係る組成物によれば、
難燃剤として無機系難燃剤と硫酸鉛あるいは亜硫酸鉛を
併用したから、良好な押出加工性を維持しながら燃焼時
のドリップを防止して高度の離燃性を付与することかで
き、しかも燃焼時に有毒なハロゲン系ガスを発生しない
電気絶縁組成物を広く市場に提供することかできる。[Effect of the invention] As explained above, according to the composition according to the present invention,
Since an inorganic flame retardant and lead sulfate or lead sulfite are used together as flame retardants, it is possible to prevent drips during combustion while maintaining good extrusion processability, giving a high degree of flammability. Electrical insulating compositions that do not emit toxic halogen gases can be widely provided on the market.
Claims (1)
剤５０〜３００重量部、及び硫酸鉛あるいは亜硫酸鉛０
．５重量部以上を含有せしめてなる難燃性電気絶縁組成
物。(1) 50 to 300 parts by weight of an inorganic flame retardant and 0 lead sulfate or lead sulfite per 100 parts by weight of polyolefin.
．． A flame-retardant electrical insulation composition containing 5 parts by weight or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1097234A JPH02274742A (en) | 1989-04-17 | 1989-04-17 | Flame-retardant electrical insulating composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1097234A JPH02274742A (en) | 1989-04-17 | 1989-04-17 | Flame-retardant electrical insulating composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02274742A true JPH02274742A (en) | 1990-11-08 |
Family
ID=14186931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1097234A Pending JPH02274742A (en) | 1989-04-17 | 1989-04-17 | Flame-retardant electrical insulating composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02274742A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5563375A (en) * | 1992-03-06 | 1996-10-08 | Sumitomo Electric Industries, Ltd. | Insulated electric wire for high-voltage direct current |
| KR100485952B1 (en) * | 2001-11-27 | 2005-04-28 | 엘에스전선 주식회사 | Thermosetting inflammable material composition |
-
1989
- 1989-04-17 JP JP1097234A patent/JPH02274742A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5563375A (en) * | 1992-03-06 | 1996-10-08 | Sumitomo Electric Industries, Ltd. | Insulated electric wire for high-voltage direct current |
| KR100485952B1 (en) * | 2001-11-27 | 2005-04-28 | 엘에스전선 주식회사 | Thermosetting inflammable material composition |
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