JPH04253747A - Flame-retarding electrical-insulating composition - Google Patents
Flame-retarding electrical-insulating compositionInfo
- Publication number
- JPH04253747A JPH04253747A JP3014294A JP1429491A JPH04253747A JP H04253747 A JPH04253747 A JP H04253747A JP 3014294 A JP3014294 A JP 3014294A JP 1429491 A JP1429491 A JP 1429491A JP H04253747 A JPH04253747 A JP H04253747A
- Authority
- JP
- Japan
- Prior art keywords
- flame
- polyolefin
- retarding
- retardant
- heat aging
- 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
- 239000000203 mixture Substances 0.000 title claims abstract description 16
- 229920000098 polyolefin Polymers 0.000 claims abstract description 18
- 239000012796 inorganic flame retardant Substances 0.000 claims abstract description 15
- 229920006037 cross link polymer Polymers 0.000 claims abstract description 11
- 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 claims description 17
- 239000003063 flame retardant Substances 0.000 claims description 17
- 229920000642 polymer Polymers 0.000 claims description 6
- 239000007789 gas Substances 0.000 abstract description 8
- 229910052736 halogen Inorganic materials 0.000 abstract description 8
- 150000002367 halogens Chemical class 0.000 abstract description 8
- 230000032683 aging Effects 0.000 abstract description 5
- 229920001577 copolymer Polymers 0.000 abstract description 3
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 abstract description 2
- 125000002843 carboxylic acid group Chemical group 0.000 abstract description 2
- 230000001473 noxious effect Effects 0.000 abstract 2
- 229920002959 polymer blend Polymers 0.000 abstract 2
- 238000004132 cross linking Methods 0.000 abstract 1
- 150000001457 metallic cations Chemical class 0.000 abstract 1
- 230000000979 retarding effect Effects 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 description 9
- 230000003679 aging effect Effects 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 6
- 238000010292 electrical insulation Methods 0.000 description 5
- 230000009931 harmful effect Effects 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000003963 antioxidant agent Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- -1 polyethylene, ethylene vinyl acetate Polymers 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- 229920001897 terpolymer Polymers 0.000 description 2
- VETPHHXZEJAYOB-UHFFFAOYSA-N 1-n,4-n-dinaphthalen-2-ylbenzene-1,4-diamine Chemical compound C1=CC=CC2=CC(NC=3C=CC(NC=4C=C5C=CC=CC5=CC=4)=CC=3)=CC=C21 VETPHHXZEJAYOB-UHFFFAOYSA-N 0.000 description 1
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-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
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- WXCZUWHSJWOTRV-UHFFFAOYSA-N but-1-ene;ethene Chemical compound C=C.CCC=C WXCZUWHSJWOTRV-UHFFFAOYSA-N 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- KTWOOEGAPBSYNW-UHFFFAOYSA-N ferrocene Chemical compound [Fe+2].C=1C=C[CH-]C=1.C=1C=C[CH-]C=1 KTWOOEGAPBSYNW-UHFFFAOYSA-N 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002530 phenolic antioxidant Substances 0.000 description 1
- 150000003018 phosphorus compounds Chemical class 0.000 description 1
- DOIRQSBPFJWKBE-UHFFFAOYSA-N phthalic acid di-n-butyl ester Natural products CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 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
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Inorganic Insulating Materials (AREA)
- Insulated Conductors (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、燃焼時に有害なハロゲ
ン系ガスを発生しない難燃性電気絶縁組成物に係り、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。[Industrial Application Field] The present invention relates to a flame-retardant electrical insulating composition that does not generate harmful halogen gases when burned, and has flame-retardant properties particularly suitable for application to insulating materials and sheath materials for electric wires and cables. The present invention relates to electrical insulation compositions.
【０００２】0002
【従来の技術】電線・ケーブルの絶縁材料やシース材料
としては電気絶縁性に優れたポリオレフィンが多く用い
られてきている。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・
ケーブルに垂直トレイ燃焼試験レベルの高度の難燃性が
要望されるようになってきた。2. Description of the Related Art Polyolefins, which have excellent electrical insulation properties, have been widely used as insulating materials and sheath materials for electric wires and cables. Recent trends include electric wires and cables for nuclear power plants, electric wires and cables for vehicles, and electric wires and cables for ships.
Cables are now required to have a high degree of flame retardancy on the level of vertical tray combustion tests.
【０００３】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。しかし、これらの化合物は燃焼時に多量
の煙を発生し、機器への腐食性、人体への有害性等が問
題になっている。特に最近は、安全面からこのようなハ
ロゲン系ガスを発生しないことが要望されるようになっ
てきている。[0003] As a method of making polyolefin flame retardant, a method of incorporating a halogen-containing compound or the like has generally been adopted. However, these compounds generate a large amount of smoke when burned, causing problems such as corrosivity to equipment and toxicity to the human body. Particularly recently, there has been a demand for not generating such halogen-based gas from a safety standpoint.
【０００４】このような情勢を踏まえ、発煙性、有害性
の非常に少ない無機系難燃剤が注目されるようになって
きた。[0004] In view of these circumstances, inorganic flame retardants with extremely low smoke-emitting and harmful properties have been attracting attention.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記無
機系難燃剤は難燃効果が小さいため、単にポリマーに混
和しただけでは燃焼時に溶融滴下するというドリップ現
象がみられ、高度の難燃性を付与することは難しい。[Problems to be Solved by the Invention] However, the above-mentioned inorganic flame retardants have a small flame retardant effect, so if they are simply mixed with a polymer, a drip phenomenon in which they melt and drip during combustion is observed, and they do not provide a high degree of flame retardancy. It's difficult to do.
【０００６】なお、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加えることも有効であるが、得ら
れる絶縁体やシースの引張特性、熱老化特性の低下を招
いたり、押出性が低下するという問題がある。[0006] In order to impart a high degree of flame retardancy,
Adding a large amount of an inorganic flame retardant is also effective, but there are problems in that the tensile properties and heat aging properties of the resulting insulator or sheath deteriorate, and extrudability deteriorates.
【０００７】本発明は、以上の点に鑑みなされたもので
あり、燃焼時のドリップを防止して高度の難燃性を有す
ると共に、有害なハロゲン系ガスの発生防止を可能とし
、かつ良好な引張特性、熱老化特性を有する難燃性電気
絶縁組成物を提供することを目的とする。The present invention has been made in view of the above points, and has a high degree of flame retardancy by preventing drips during combustion, and also makes it possible to prevent the generation of harmful halogen gases, and has a good The object of the present invention is to provide a flame-retardant electrical insulation composition having tensile properties and heat aging properties.
【０００８】[0008]
【課題を解決するための手段】本発明者らは、無機系難
燃剤を混和して、燃焼時に有害なハロゲン系ガスを発生
しない難燃性電気絶縁組成物の知見を基に、燃焼時のド
リップを防止して高度の難燃性を有すると共に良好な引
張特性、熱老化特性を有する難燃性電気絶縁組成物を得
るために種々の研究開発を実施した結果、ポリオレフィ
ンと擬似架橋ポリマとの混合ポリマに無機系難燃剤を含
有させることに着目し、これらの化合物の含有量等を特
定したのである。[Means for Solving the Problems] The present inventors have developed a flame-retardant electrical insulating composition that does not generate harmful halogen gases during combustion by mixing an inorganic flame retardant. As a result of carrying out various research and development efforts in order to obtain a flame-retardant electrical insulation composition that prevents dripping and has a high degree of flame retardancy, as well as good tensile properties and heat aging properties, we found that a combination of polyolefin and pseudo-crosslinked polymer was developed. They focused on incorporating inorganic flame retardants into the mixed polymer and specified the content of these compounds.
【０００９】すなわち、本発明の難燃性電気絶縁組成物
は、結晶化度２０重量％以上のポリオレフィンと擬似架
橋ポリマを９５：５ 〜７０：３０の比率で混合したポ
リマ １００重量部に対して、無機系難燃剤１００〜３
００ 重量部を含有してなるものである。That is, the flame-retardant electrical insulating composition of the present invention contains polyolefin having a crystallinity of 20% by weight or more and a pseudo-crosslinked polymer, based on 100 parts by weight of a polymer mixed in a ratio of 95:5 to 70:30. , inorganic flame retardant 100-3
00 parts by weight.
【００１０】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
ェンターポリマー、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、エチレンブテンジェンター
ポリマーといったものが挙げられ、これらは単独使用又
は２種以上の併用が可能である。[0010] In the present invention, the polyolefin is as follows:
Ethylene propylene copolymer, ethylene propylene terpolymer, polyethylene, ethylene vinyl acetate copolymer, ethylene ethyl acrylate copolymer,
Examples include ethylene butene copolymer and ethylene butene terpolymer, and these can be used alone or in combination of two or more.
【００１１】このポリオレフィンの結晶化度は、２０重
量％以上とする必要があり、規定値未満では燃焼時のド
リップ等で難燃性が低下してしまう。The degree of crystallinity of this polyolefin must be 20% by weight or more, and if it is less than the specified value, the flame retardance will decrease due to drips during combustion.
【００１２】擬似架橋ポリマとしては、ポリオレフィン
の分子鎖に有るカルボン酸基の側鎖の一部が金属陽イオ
ンによって分子鎖間で架橋されている構造を有している
もので、具体的には三井デュポンポリケミカル（株）の
アイオノマといったものが挙げられる。ポリオレフィン
と擬似架橋ポリマとの混合比率は、９５：５ 〜７０：
３０とする必要があり、規定値未満では目的とする機械
特性が付与できず、規定値を越えると加工性が悪くなり
押出成形が困難になる。[0012] Pseudo-crosslinked polymers have a structure in which part of the side chains of carboxylic acid groups in the molecular chains of polyolefins are crosslinked between the molecular chains by metal cations. Examples include ionomers manufactured by DuPont Mitsui Polychemicals Co., Ltd. The mixing ratio of polyolefin and pseudo-crosslinked polymer is 95:5 to 70:
If it is less than the specified value, the desired mechanical properties cannot be imparted, and if it exceeds the specified value, the processability will deteriorate and extrusion molding will become difficult.
【００１３】無機系難燃剤としては、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
。この無機系難燃剤の含有量は、ポリオレフィン １０
０重量部に対して、 １００〜３００ 重量部の範囲と
する必要があり、含有量が１００重量部未満では目的と
する難燃性を付与できず、 ３００重量部を越えると加
工性が著しく低下して押出成形が困難になる。Examples of inorganic flame retardants include aluminum hydroxide, magnesium hydroxide, basic magnesium carbonate, calcium hydroxide, and hydrotalcites. The content of this inorganic flame retardant is polyolefin 10
0 parts by weight, it is necessary to range from 100 to 300 parts by weight; if the content is less than 100 parts by weight, the desired flame retardancy cannot be imparted, and if it exceeds 300 parts by weight, processability will be significantly reduced. This makes extrusion difficult.
【００１４】従って、結晶化度２０重量％以上のポリオ
レフィンと擬似架橋ポリマを９５：５ 〜７０：３０の
比率で混合したポリマ １００重量部に対して、無機系
難燃剤 １００〜３００ 重量部を含有することにより
、良好な押出性及び機械特性を維持しながら燃焼時のド
リップ及びハロゲン系ガスの発生を防止して高度の難燃
性を付与できる難燃性電気絶縁組成物を得ることが可能
となる。[0014] Therefore, 100 to 300 parts by weight of an inorganic flame retardant is contained per 100 parts by weight of a polymer obtained by mixing a polyolefin with a crystallinity of 20% by weight or more and a pseudo-crosslinked polymer in a ratio of 95:5 to 70:30. By doing so, it is possible to obtain a flame-retardant electrical insulating composition that can provide a high degree of flame retardancy by preventing drips and generation of halogen gas during combustion while maintaining good extrudability and mechanical properties. Become.
【００１５】本発明では、上記成分に加えて酸化防止剤
、滑剤、軟化剤、分散剤、難燃助剤等を適宜添加しても
よい。酸化防止剤としては、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−ｔ−ブチ
ル−４−メチルフェノール、ヒンダードフェノール等の
フェノール系酸化防止剤が挙げられる。難燃助剤として
は、リン系化合物（赤リンを含む）、ホウ酸亜鉛、フェ
ロセン等が挙げられる。In the present invention, in addition to the above components, antioxidants, lubricants, softeners, dispersants, flame retardant aids, etc. may be added as appropriate. Examples of antioxidants include amine antioxidants such as phenyl-α-naphthylamine and N,N′-di-β-naphthyl-P-phenylenediamine, 2,6-di-t-butyl-4-methylphenol, Examples include phenolic antioxidants such as hindered phenol. Examples of flame retardant aids include phosphorus compounds (including red phosphorus), zinc borate, ferrocene, and the like.
【００１６】[0016]
【実施例】以下、本発明の実施例を説明する。[Examples] Examples of the present invention will be described below.
【００１７】表１の実施例１〜５および比較例１〜５の
各欄に示すような配合に従って、各種成分を 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
い、混練後、これらを、 １２０℃に保持された４０ｍ
／ｍ押出機（Ｌ／Ｄ＝２５）を用い、外径５．３ｍｍの
絶縁線心を３本撚合せた外周に ２．０ｍｍの厚さで押
出被覆して、各種ケーブル（絶縁電線）を作製し、これ
らを試料とした。[0017] Various components were heated at 100°C according to the formulations shown in the columns of Examples 1 to 5 and Comparative Examples 1 to 5 in Table 1.
After kneading, these were put into a 6-inch roll held at 120°C and kneaded by rolls.
/m extruder (L/D=25), the outer circumference of three twisted insulated wire cores with an outer diameter of 5.3 mm is extruded and coated with a thickness of 2.0 mm, and various cables (insulated wires) are made. These were used as samples.
【００１８】これらの試料の評価を押出性、機械特性及
び難燃性について行い、その結果を表１の下欄に示す。These samples were evaluated for extrudability, mechanical properties and flame retardancy, and the results are shown in the lower column of Table 1.
【００１９】なお、各評価方法は次の通りである。[0019]Each evaluation method is as follows.
【００２０】押出性（押出加工性）は、押出機での押出
時に良好に押出加工できるものを良とし、押出加工でき
ないものを悪とした。[0020] Regarding the extrudability (extrusion processability), those that could be extruded well during extrusion using an extruder were rated good, and those that could not be extruded were rated bad.
【００２１】機械特性の評価は引張特性と熱老化特性に
ついて行い、引張特性は、日本電線工業規格第３９１号
に準じ、ＪＬＳ Ｋ７１１２のダンベル３号で打ち抜
いた試料をショッパ型引張試験機を用い２００ｍｍ／分
で引張試験を行い、引張強さが１．０ｋｇ／ｍｍ以上、
伸びが ３５０％以上のものを良とし、この値未満のも
のを悪とした。[0021] Mechanical properties were evaluated in terms of tensile properties and heat aging properties. Tensile properties were determined using a Schopper type tensile tester using a sample punched out with JLS K7112 dumbbell No. 3 according to Japan Cable Industry Standard No. 391. / minute tensile test, the tensile strength is 1.0 kg/mm or more,
An elongation of 350% or more was considered good, and an elongation less than this value was considered bad.
【００２２】熱老化特性は、ＢＳ ６７２３の規格に
準じ、 １００℃の空気老化試験機中で７日間老化後、
引張試験を行い、引張強さ残率が７０％以上、伸び残率
が７０％以上のものを良とし、この値未満のものを悪と
した。[0022] The heat aging properties were determined in accordance with the BS 6723 standard, after aging for 7 days in an air aging tester at 100°C.
A tensile test was conducted, and those with tensile strength retention of 70% or more and elongation retention of 70% or more were evaluated as good, and those with less than these values were evaluated as bad.
【００２３】難燃性（垂直トレイ難燃試験）は、長さ２
ｍのケーブルを垂直に８本並べ、下から ７００００Ｂ
ＴＵの炎を２０分間当て、自己消炎すれば合格とし、自
己消炎せず全焼するものは不合格とした。Flame retardancy (vertical tray flame retardancy test)
8 m cables arranged vertically and 70000B from the bottom
If the flame of TU was applied for 20 minutes and the flame self-extinguished, the flame was passed, and if the flame did not self-extinguish and the flame was completely burnt out, the flame was rejected.
【００２４】[0024]
【表１】[Table 1]
【００２５】表１に示される結果からも明らかな通り、
本発明の難燃性電気絶縁組成物を用いた実施例１〜５の
試料は、いずれも難燃性に合格し、押出性、引張特性、
熱老化特性にも優れている。これに対して、ポリオレフ
ィンと擬似架橋ポリマの混合比が規定値未満の比較例１
は、熱老化特性が悪く、その規定値を越えている比較例
２は、押出性が悪く押出加工が困難であった。また、無
機系難燃剤の含有量が規定値未満の比較例３は、難燃性
が不合格であり、その含有量が規定値を越える比較例４
は、押出性が悪く成形不可能であった。さらに、ポリオ
レフィンの結晶化度が規定値未満の比較例５は、燃焼時
にドリップが生じ難燃性が不合格であった。As is clear from the results shown in Table 1,
The samples of Examples 1 to 5 using the flame-retardant electrical insulation composition of the present invention all passed the flame retardant test, and the extrudability, tensile properties,
It also has excellent heat aging properties. In contrast, Comparative Example 1 in which the mixing ratio of polyolefin and pseudo-crosslinked polymer was less than the specified value
Comparative Example 2, in which the heat aging properties were poor and exceeded the specified values, had poor extrudability and was difficult to extrude. In addition, Comparative Example 3, in which the content of inorganic flame retardant was less than the specified value, failed in flame retardancy, and Comparative Example 4, in which the content exceeded the specified value.
had poor extrudability and could not be molded. Furthermore, in Comparative Example 5 in which the degree of crystallinity of the polyolefin was less than the specified value, dripping occurred during combustion and the flame retardance was rejected.
【００２６】従って、特定結晶化度のポリオレフィンと
擬似架橋ポリマとを規定比率で混合したポリマに、無機
系難燃剤を規定量含有することにより、良好な押出性を
維持しながら垂直トレイ難燃試験レベルに合格する高度
の難燃性を付与でき、しかも燃焼時のドリップを防止で
き、良好な引張特性、熱老化特性を有する難燃性電気絶
縁組成物が得られることになる。Therefore, by containing a specified amount of an inorganic flame retardant in a polymer prepared by mixing a polyolefin with a specific crystallinity and a pseudo-crosslinked polymer in a specified ratio, it is possible to conduct a vertical tray flame retardant test while maintaining good extrudability. A flame-retardant electrical insulating composition can be obtained which can provide a high degree of flame retardancy that passes the standard, can prevent dripping during combustion, and has good tensile properties and heat aging properties.
【００２７】[0027]
【発明の効果】以上要するに本発明の難燃性電気絶縁組
成物は、結晶化度２０重量％以上のポリオレフィンと擬
似架橋ポリマを９５：５ 〜７０：３０の比率で混合し
たポリマ １００重量部に対して、無機系難燃剤 １０
０〜３００ 重量部を含有して構成されたので、燃焼時
のドリップを防止して高度の難燃性を有すると共に、有
害なハロゲン系ガスの発生防止をし、かつ良好な引張特
性、熱老化特性を有するという優れた効果を発揮する。Effects of the Invention In summary, the flame-retardant electrical insulating composition of the present invention comprises 100 parts by weight of a polyolefin having a crystallinity of 20% by weight or more and a pseudo-crosslinked polymer mixed in a ratio of 95:5 to 70:30. On the other hand, inorganic flame retardants 10
Since it contains 0 to 300 parts by weight, it prevents dripping during combustion and has high flame retardancy, prevents the generation of harmful halogen gases, and has good tensile properties and resistance to heat aging. It exhibits excellent effects due to its characteristics.
Claims (1)
ィンと擬似架橋ポリマを９５：５ 〜７０：３０の比率
で混合したポリマ １００重量部に対して、無機系難燃
剤 １００〜３００ 重量部を含有することを特徴とす
る難燃性電気絶縁組成物。Claim 1: Contains 100 to 300 parts by weight of an inorganic flame retardant per 100 parts by weight of a polymer obtained by mixing a polyolefin with a crystallinity of 20% by weight or more and a pseudo-crosslinked polymer in a ratio of 95:5 to 70:30. A flame-retardant electrical insulating composition characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3014294A JPH04253747A (en) | 1991-02-05 | 1991-02-05 | Flame-retarding electrical-insulating composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3014294A JPH04253747A (en) | 1991-02-05 | 1991-02-05 | Flame-retarding electrical-insulating composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04253747A true JPH04253747A (en) | 1992-09-09 |
Family
ID=11857076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3014294A Pending JPH04253747A (en) | 1991-02-05 | 1991-02-05 | Flame-retarding electrical-insulating composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04253747A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100296321B1 (en) * | 1999-03-12 | 2001-07-03 | 권문구 | The insulation material for cable and the insulation cable using it |
| KR100624878B1 (en) * | 2005-01-28 | 2006-09-19 | 엘에스전선 주식회사 | Composition and method for production flame retardant insulating material of halogen free type with high voltage cut-through test |
| JP5243653B1 (en) * | 2012-09-26 | 2013-07-24 | 株式会社フジクラ | Flame-retardant resin composition and molded body using the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61168644A (en) * | 1985-01-22 | 1986-07-30 | Fujikura Ltd | Flame-retardant resin composition |
| JPS61255951A (en) * | 1985-05-09 | 1986-11-13 | Nippon Petrochem Co Ltd | Lowly smoking ethylene polymer composition |
| JPH0253845A (en) * | 1988-08-18 | 1990-02-22 | Fujikura Ltd | Flame-retardant resin composition |
-
1991
- 1991-02-05 JP JP3014294A patent/JPH04253747A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61168644A (en) * | 1985-01-22 | 1986-07-30 | Fujikura Ltd | Flame-retardant resin composition |
| JPS61255951A (en) * | 1985-05-09 | 1986-11-13 | Nippon Petrochem Co Ltd | Lowly smoking ethylene polymer composition |
| JPH0253845A (en) * | 1988-08-18 | 1990-02-22 | Fujikura Ltd | Flame-retardant resin composition |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100296321B1 (en) * | 1999-03-12 | 2001-07-03 | 권문구 | The insulation material for cable and the insulation cable using it |
| KR100624878B1 (en) * | 2005-01-28 | 2006-09-19 | 엘에스전선 주식회사 | Composition and method for production flame retardant insulating material of halogen free type with high voltage cut-through test |
| JP5243653B1 (en) * | 2012-09-26 | 2013-07-24 | 株式会社フジクラ | Flame-retardant resin composition and molded body using the same |
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