JPH03124746A - Flame-retardant, electrically insulating composition - Google Patents
Flame-retardant, electrically insulating compositionInfo
- Publication number
- JPH03124746A JPH03124746A JP1262481A JP26248189A JPH03124746A JP H03124746 A JPH03124746 A JP H03124746A JP 1262481 A JP1262481 A JP 1262481A JP 26248189 A JP26248189 A JP 26248189A JP H03124746 A JPH03124746 A JP H03124746A
- Authority
- JP
- Japan
- Prior art keywords
- density polyethylene
- density
- flame
- polymer
- oxygen
- 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.)
- Granted
Links
- 239000000203 mixture Substances 0.000 title claims description 13
- 239000003063 flame retardant Substances 0.000 title claims description 9
- 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 8
- 229920001862 ultra low molecular weight polyethylene Polymers 0.000 claims abstract description 13
- 229920000642 polymer Polymers 0.000 claims abstract description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 9
- 239000001301 oxygen Substances 0.000 claims abstract description 9
- 229920001897 terpolymer Polymers 0.000 claims abstract description 9
- 229920000098 polyolefin Polymers 0.000 claims abstract description 5
- 238000010292 electrical insulation Methods 0.000 claims description 9
- 229910052736 halogen Inorganic materials 0.000 claims description 7
- 150000002367 halogens Chemical class 0.000 claims description 7
- 229920005601 base polymer Polymers 0.000 abstract description 3
- 229920001684 low density polyethylene Polymers 0.000 abstract description 2
- 239000004702 low-density polyethylene Substances 0.000 abstract description 2
- 238000013329 compounding Methods 0.000 abstract 2
- 229920002959 polymer blend Polymers 0.000 abstract 2
- 229920000089 Cyclic olefin copolymer Polymers 0.000 abstract 1
- 230000001747 exhibiting effect Effects 0.000 abstract 1
- 229920001577 copolymer Polymers 0.000 description 9
- 238000004132 cross linking Methods 0.000 description 8
- 238000009413 insulation Methods 0.000 description 5
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 4
- 239000005977 Ethylene Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000002861 polymer material Substances 0.000 description 3
- 239000004709 Chlorinated polyethylene Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 229920005549 butyl rubber Polymers 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 239000004703 cross-linked polyethylene Substances 0.000 description 2
- 229920003020 cross-linked polyethylene Polymers 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000001451 organic peroxides Chemical class 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000000047 product 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
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 239000004716 Ethylene/acrylic acid copolymer Substances 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- BAPJBEWLBFYGME-UHFFFAOYSA-N acrylic acid methyl ester Natural products COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 229920005557 bromobutyl Polymers 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007765 extrusion coating Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229920002681 hypalon Polymers 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 229920003145 methacrylic acid copolymer Polymers 0.000 description 1
- 229940117841 methacrylic acid copolymer Drugs 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
Landscapes
- Fireproofing Substances (AREA)
- 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、電気絶縁性や耐熱性等の本来の特性を損うこ
となく十分な難燃性を発揮すると共に可撓性にも優れた
新規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] [Field of Industrial Application] The present invention provides a material that exhibits sufficient flame retardancy without impairing its original properties such as electrical insulation and heat resistance, and also has excellent flexibility. The present invention relates to a novel flame-retardant electrical insulation composition.
［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、すなわち、ポリエチレ
ン、架橋ポリエチレン、エチレン・プロピレンゴム、ブ
チルゴム、ポリ塩化ビニル等のポリマ材料は、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が拡大する例が多く、
場合によっては火元となることすらあって、難燃性の電
線・ケーブルへの要請かにわかに高まってきている。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ＶＴＦＴ （垂直トレイ燃焼試験）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が要望されるようにな
ってきた。[Prior art] Materials that have been used as insulators and sheaths for electric wires and cables, including polyolefin, which is widely used due to its excellent electrical insulation properties, such as polyethylene, crosslinked polyethylene, ethylene/propylene rubber, Polymer materials such as butyl rubber and polyvinyl chloride are all flammable, and in the event of a fire, electrical wires and
There are many cases where fires spread through cable wiring systems.
In some cases, they can even become a source of fire, so demand for flame-retardant electric wires and cables is rapidly increasing. In particular, as a recent trend, IEEE (Institute of Electrical and Electronics Engineers) Standard 383 is being applied to electric wires and cables for nuclear power plants, electric wires and cables for vehicles, and electric wires and cables for ships.
A high level of flame retardancy is now required, which is required to pass a multi-line installation combustion test that simulates the actual installation conditions stipulated in the VTFT (Vertical Tray Combustion Test).
このため、電線・ケーブル用絶縁材料に対し本来の電気
絶縁性や耐熱性は勿論のこと、難燃性をも兼ね備えるこ
とが要求されてきている。For this reason, insulating materials for electric wires and cables are required to have not only inherent electrical insulation properties and heat resistance, but also flame retardancy.
このような要求に応えるため、ポリエチレン、架橋ポリ
エチレン、エチレン・プロピレンゴム、ブチルゴム等の
ハロゲンを含まないポリマ材料に塩素や臭素を含有させ
た粉状難燃剤を添加するか、或いは前記ポリマ材料にハ
ロゲン含有ポリマをブレンドすることにより、それらの
絶縁材料に難燃性を付与することが一般に行なわれてい
る。In order to meet these demands, powdered flame retardants containing chlorine or bromine are added to halogen-free polymer materials such as polyethylene, cross-linked polyethylene, ethylene/propylene rubber, butyl rubber, or halogen-free polymer materials are added. It is common practice to impart flame retardancy to these insulating materials by blending them with polymers.
［発明が解決しようとする課題］
粉状の難燃剤を添加する方法は、使用時に難燃剤が表面
に析出する現象（ブルーム）を生じ、製品の品質を低下
させる間組がある。又、ハロゲン含有ポリマをブレンド
する方法は、極性の差からポリマ同士が十分に相溶せず
、経時的に相分離を生じる結果、機械的特性が著しく低
下するという問題がある。[Problems to be Solved by the Invention] The method of adding a powdered flame retardant causes a phenomenon (bloom) in which the flame retardant precipitates on the surface during use, which deteriorates the quality of the product. Furthermore, the method of blending halogen-containing polymers has a problem in that the polymers are not sufficiently compatible with each other due to the difference in polarity, and phase separation occurs over time, resulting in a significant decrease in mechanical properties.
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、電気絶縁性や耐熱性等の本来の特性を損うことな
く十分な難燃性を発揮すると共に可撓性にも優れた新規
な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, to exhibit sufficient flame retardancy without impairing the original properties such as electrical insulation and heat resistance, and to have excellent flexibility. The present invention aims to provide a novel flame-retardant electrical insulation composition.
［課題を解決するための手段］
本発明は、密度が０．８８２〜０．９１０の範囲の超低
密度ポリエチレン９０〜２０重量％とハロゲン含有ポリ
マ１０〜８０重量％とからなるブレノドポ９フ１００重
呈部に対して２〜３０重量部の酸素含有ポリオレフィン
コポリマあるいはターポリマを添加してなることを要旨
とするものである。[Means for Solving the Problems] The present invention provides Blenodopo9F100, which is composed of 90 to 20% by weight of ultra-low density polyethylene having a density in the range of 0.882 to 0.910 and 10 to 80% by weight of a halogen-containing polymer. The gist is that 2 to 30 parts by weight of an oxygen-containing polyolefin copolymer or terpolymer is added to the overlapping part.
本発明が特徴点とするものは、ベースポリマにハロゲン
含有ポリマをブレンドする際に両者の相溶性を高める作
用を有する酸素含有ポリオレフィンコポリマあるいはタ
ーポリマを添加したことにあり、それにより前記従来例
の有する問題点を解消し、電気絶縁特性や耐熱性あるい
は機械的特性といった本来の特性を損うことなく高い難
燃性を付与し得ることを見出し本発明に至ったものであ
る。The feature of the present invention is that when blending a halogen-containing polymer with a base polymer, an oxygen-containing polyolefin copolymer or terpolymer that has the effect of increasing the compatibility between the two is added. The inventors have discovered that it is possible to solve these problems and impart high flame retardancy without impairing the original properties such as electrical insulation properties, heat resistance, and mechanical properties, leading to the present invention.
ベースポリマとして超低密度ポリエチレンを選定したの
は、上記相溶性を改善する上で好ましいからであり、ま
た超低密度ポリエチレンの密度の下限を限定したのは、
現在製造可能な範囲がこの程度であるからであり、今後
０．８８２以壬のものも製造し得る可能性はある。Ｌ限
を０．９１０までとしたのはこれより少し大きくなると
いわゆる低密度ポリエチレンの範囲になり求める特性を
得る上で不都合となるからである。We selected ultra-low density polyethylene as the base polymer because it is preferable for improving the above-mentioned compatibility, and the lower limit of the density of ultra-low density polyethylene was set because
This is because this is the range that can be manufactured at present, and there is a possibility that products of 0.882 or higher can be manufactured in the future. The L limit is set to 0.910 because if it is slightly larger than this, it falls within the range of so-called low-density polyethylene, which is inconvenient in obtaining the desired properties.
本発明において超低密度ポリエチレンとハロゲン含有ポ
リマのブレンド比を上記のように限定したのは、超低密
度ポリエチレンが９０重量％を越えると十分な難燃性が
得られず、逆に２０重量％未満では耐熱性の点で劣るか
らである。In the present invention, the blend ratio of ultra-low density polyethylene and halogen-containing polymer is limited as described above because if ultra-low density polyethylene exceeds 90% by weight, sufficient flame retardancy cannot be obtained; This is because if it is less than that, the heat resistance will be poor.
ハロゲン含有ポリマとしては、塩素化ポリエチレン、ク
ロロスルホン化ポリエチレン、臭素化ブチルゴム、臭素
化エチレン・プロピレンゴム、塩素化エチレン・プロピ
レンゴム、塩素化天然ゴム等が挙げられる。Examples of the halogen-containing polymer include chlorinated polyethylene, chlorosulfonated polyethylene, brominated butyl rubber, brominated ethylene/propylene rubber, chlorinated ethylene/propylene rubber, and chlorinated natural rubber.
酸素含有コポリマあるいはターポリマとしては、エチレ
ン・酢酸とニルコポリマ、エチレン・メチルメタアクリ
レートコポリマ、エチレン・エチルアクリレートコポリ
マ、エチレン・メチルアクリレートコポリマ、エチレン
・アクリル酸コポリマエチレン・エチルアクリレート・
無水マレイン酸ターポリマ、エチレン・メタクリル酸コ
ポリマ等が挙げられる。これらの添加量を２〜３０重量
部の範囲に限定するのは、これ以下では超低密度ポリエ
チレンとハロゲン含有ポリマとの相溶性か低下し、機械
的特性の点で劣り、また３０重量部を越えると、電気特
性が低下してくると共に超低密度ポリエチレンのリッチ
な組成においては難燃性も低下してくるからである。Oxygen-containing copolymers or terpolymers include ethylene/acetic acid and nyl copolymers, ethylene/methyl methacrylate copolymers, ethylene/ethyl acrylate copolymers, ethylene/methyl acrylate copolymers, ethylene/acrylic acid copolymers, and ethylene/ethyl acrylate copolymers.
Examples include maleic anhydride terpolymer and ethylene/methacrylic acid copolymer. The reason why the amount of these additives is limited to 2 to 30 parts by weight is that if the amount is less than 30 parts by weight, the compatibility between the ultra-low density polyethylene and the halogen-containing polymer will decrease, resulting in poor mechanical properties. This is because if it exceeds this, the electrical properties will deteriorate and, in the case of a rich composition of ultra-low density polyethylene, the flame retardance will also decrease.
本発明の電気絶縁組成物を架橋する方法としては、有機
過酸化物による架橋、電子線照射による架橋、シラング
ラフト水架橋等がある。有機過酸化物による架橋に用い
られる架橋剤としては、ジクミルパーオキサイド、３−
ビス（１−ブチルパーオキシイソ１０ビル）ベンゼン等
が好適である。Examples of methods for crosslinking the electrically insulating composition of the present invention include crosslinking using organic peroxides, crosslinking using electron beam irradiation, and silane graft water crosslinking. Crosslinking agents used for crosslinking with organic peroxides include dicumyl peroxide, 3-
Bis(1-butylperoxyiso10vir)benzene and the like are preferred.
また、電子線照射による架橋における架橋助剤としては
、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モノマーが一般的である。Further, as a crosslinking aid for crosslinking by electron beam irradiation, reactive monomers such as trimethylolpropane trimellitate and triallyl isocyanurate are generally used.
なお、本発明では上記ブレンドに加えて、酸化防止剤、
滑剤、難燃助剤、充填剤、カーボンブラツク等が添加さ
れていてもよい。In addition, in the present invention, in addition to the above blend, an antioxidant,
A lubricant, flame retardant aid, filler, carbon black, etc. may be added.
［実施例］
以下に、本発明について実施例および比較例を参照し説
明する。[Examples] The present invention will be described below with reference to Examples and Comparative Examples.
第１表に示す配合割合に従って各種成分を配合し、約１
２０℃に保持された８インチロールに投入してロール混
練を行なった。混練後、１３０℃に保持された４ ０
ｍ ／ ｍ押出ｔＲ（Ｌ／Ｄ＝２５ ）を用い、外径１
．８ｆｉの導体上に厚さ２關になるように押出被覆して
絶縁電線を作製した。その後Ｉ２に＋ｒ／■２の水蒸気
雰囲気中に３分間保持して架橋を行ない、試料とした。Mix various ingredients according to the proportions shown in Table 1, and approximately 1
The mixture was put into an 8-inch roll maintained at 20°C and kneaded by roll. After kneading, the temperature was maintained at 130°C.
Using m/m extrusion tR (L/D=25), outer diameter 1
．． An insulated wire was produced by extrusion coating onto an 8fi conductor to a thickness of 2 mm. Thereafter, I2 was maintained in a water vapor atmosphere of +r/■2 for 3 minutes to effect crosslinking, and a sample was obtained.
各側の評価結果を表の下欄に示す、なお、評価方法は次
の通りである。The evaluation results for each side are shown in the lower column of the table, and the evaluation method is as follows.
難燃性： ＪＩＳＣ３００４に基き、水平に保った絶
縁電線をバーナで３０秒間燃焼
後、１分以内に消えるものは合格とし、１分を越えて燃
えるらのは不合格とし
た。Flame retardancy: Based on JISC3004, after burning an insulated wire held horizontally in a burner for 30 seconds, it was judged as passing if it disappeared within 1 minute, and it was judged as failing if it burned for more than 1 minute.
耐熱性： 電線から導体を引き抜いたチューブ状試料を
２０℃の恒温室に２４時間放
置後、及び１５０℃の老化試ｙＩ！、機に９６時間保持
後、ショツパー型引張試
験機を用いて引張速度５００ ｍｍ／ Ｉｎ１ｎで測定
し、引張強さ及び伸びの残率を
求めた。それぞれ、７５％、７０％以
上保持していなければらない。Heat resistance: A tube-shaped sample with a conductor pulled out from an electric wire was left in a constant temperature room at 20°C for 24 hours, and an aging test at 150°C was performed! After being held in the machine for 96 hours, it was measured using a Schopper type tensile tester at a tensile rate of 500 mm/In1 to determine the tensile strength and elongation retention. They must maintain at least 75% and 70%, respectively.
絶縁抵抗： 長さ３ｍの電線を用い測定した。Insulation resistance: Measured using a 3 m long electric wire.
第１表から明らかな通り、実施例１〜４はいずれも難燃
性、耐熱性に浸れ、絶縁抵抗も十分な値を保持している
。As is clear from Table 1, Examples 1 to 4 are all excellent in flame retardancy and heat resistance, and maintain sufficient insulation resistance values.
これに対し、超低密度ポリエチレン畦独の比較例１では
耐熱性や絶縁抵抗は優れているものの、難燃性が十分で
なく、逆に塩素化ポリエチレンのブレンド量が多い比較
例２では難燃性は非常に優れているが、耐熱性が不１・
分である。また、酸素含有コポリマを範囲を越えて添加
した比較例３では耐熱性には優れているものの難燃性や
絶縁抵抗が十分でない。On the other hand, although Comparative Example 1, which is made of ultra-low density polyethylene, has excellent heat resistance and insulation resistance, it does not have sufficient flame retardancy. The properties are very good, but the heat resistance is poor.
It's a minute. Further, in Comparative Example 3 in which the oxygen-containing copolymer was added in an amount exceeding the range, although the heat resistance was excellent, the flame retardance and insulation resistance were insufficient.
一方、酸素含有コポリマ又はターポリマを全く添加して
いない比較例４では難燃性や絶縁抵抗は満足しているが
、耐熱性のデータにばらつきが見られる。これは酸素含
有コポリマ又はターポリマが存在しないため超低密度ポ
リエチレンとブレンドした塩素化ポリエチレンの相溶性
が劣る結果と考えられる。On the other hand, in Comparative Example 4, in which no oxygen-containing copolymer or terpolymer was added, the flame retardance and insulation resistance were satisfactory, but there were variations in the heat resistance data. This is believed to be a result of poor compatibility of chlorinated polyethylene blended with ultra-low density polyethylene due to the absence of oxygen-containing copolymers or terpolymers.
［発明の効果］
以上詳記したように、本発明に係る組成物をもってすれ
ば、電気絶縁性や耐熱性等の本来の特性を損うことなく
、難燃性や可視性を付与させた電気絶縁組成物を広く市
場に提供できるものであり、その工業上の価値は大きい
。[Effects of the Invention] As detailed above, the composition according to the present invention can be used to create electrical appliances that have flame retardancy and visibility without impairing their original properties such as electrical insulation and heat resistance. The insulating composition can be widely provided to the market, and its industrial value is great.
Claims (1)
ポリエチレン９０〜２０重量％とハロゲン含有ポリマ１
０〜８０重量％とからなるブレンドポリマ１００重量部
に対して２〜 ３０重量部の酸素含有ポリオレフィンコポリマあるいは
ターポリマを添加してなる難燃性電気絶縁組成物。(1) 90-20% by weight of ultra-low density polyethylene with a density in the range of 0.882-0.910 and halogen-containing polymer 1
A flame-retardant electrical insulation composition comprising 2 to 30 parts by weight of an oxygen-containing polyolefin copolymer or terpolymer added to 100 parts by weight of a blend polymer comprising 0 to 80% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1262481A JP2727690B2 (en) | 1989-10-07 | 1989-10-07 | Flame retardant electrical insulating composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1262481A JP2727690B2 (en) | 1989-10-07 | 1989-10-07 | Flame retardant electrical insulating composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03124746A true JPH03124746A (en) | 1991-05-28 |
| JP2727690B2 JP2727690B2 (en) | 1998-03-11 |
Family
ID=17376388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1262481A Expired - Fee Related JP2727690B2 (en) | 1989-10-07 | 1989-10-07 | Flame retardant electrical insulating composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2727690B2 (en) |
-
1989
- 1989-10-07 JP JP1262481A patent/JP2727690B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2727690B2 (en) | 1998-03-11 |
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