JPH04255739A - flame retardant composition - Google Patents
flame retardant compositionInfo
- Publication number
- JPH04255739A JPH04255739A JP3015417A JP1541791A JPH04255739A JP H04255739 A JPH04255739 A JP H04255739A JP 3015417 A JP3015417 A JP 3015417A JP 1541791 A JP1541791 A JP 1541791A JP H04255739 A JPH04255739 A JP H04255739A
- Authority
- JP
- Japan
- Prior art keywords
- flame
- flame retardant
- ethylene
- weight
- retardant composition
- 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
- 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
- 239000003063 flame retardant Substances 0.000 title claims abstract description 17
- 239000000203 mixture Substances 0.000 title claims abstract description 15
- 239000012796 inorganic flame retardant Substances 0.000 claims abstract description 14
- 238000002844 melting Methods 0.000 claims abstract description 9
- 230000008018 melting Effects 0.000 claims abstract description 9
- 229920001038 ethylene copolymer Polymers 0.000 claims description 10
- 229920001577 copolymer Polymers 0.000 abstract description 5
- 238000001125 extrusion Methods 0.000 abstract description 5
- 239000003963 antioxidant agent Substances 0.000 abstract description 4
- 238000002485 combustion reaction Methods 0.000 abstract description 3
- 239000003431 cross linking reagent Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 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 abstract description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 abstract description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 abstract description 2
- 230000003078 antioxidant effect Effects 0.000 abstract description 2
- 239000002270 dispersing agent Substances 0.000 abstract description 2
- 239000011810 insulating material Substances 0.000 abstract description 2
- 239000000314 lubricant 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
- 229920001897 terpolymer Polymers 0.000 abstract description 2
- 239000002341 toxic gas Substances 0.000 abstract 2
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 abstract 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 abstract 1
- 239000005977 Ethylene Substances 0.000 abstract 1
- 239000004902 Softening Agent Substances 0.000 abstract 1
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 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
- 150000001993 dienes Chemical class 0.000 abstract 1
- 229960001545 hydrotalcite Drugs 0.000 abstract 1
- 229910001701 hydrotalcite Inorganic materials 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 10
- 230000032683 aging Effects 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 230000014759 maintenance of location Effects 0.000 description 6
- 229910052736 halogen Inorganic materials 0.000 description 5
- 150000002367 halogens Chemical class 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 230000003679 aging effect Effects 0.000 description 4
- 238000004132 cross linking Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 229920000098 polyolefin Polymers 0.000 description 3
- 231100000331 toxic Toxicity 0.000 description 3
- 230000002588 toxic effect Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007765 extrusion coating Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 230000001988 toxicity Effects 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
- RUFPHBVGCFYCNW-UHFFFAOYSA-N 1-naphthylamine Chemical compound C1=CC=C2C(N)=CC=CC2=C1 RUFPHBVGCFYCNW-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
- 239000004641 Diallyl-phthalate Substances 0.000 description 1
- 229920002943 EPDM rubber Polymers 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- QUDWYFHPNIMBFC-UHFFFAOYSA-N bis(prop-2-enyl) benzene-1,2-dicarboxylate Chemical compound C=CCOC(=O)C1=CC=CC=C1C(=O)OCC=C QUDWYFHPNIMBFC-UHFFFAOYSA-N 0.000 description 1
- ULZZTKYVKFTVBQ-UHFFFAOYSA-N buta-1,2,3-triene;ethene Chemical compound C=C.C=C=C=C ULZZTKYVKFTVBQ-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
- 239000000306 component Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000010894 electron beam technology 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
- 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
- 238000009472 formulation Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000005865 ionizing radiation Effects 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
- 238000000034 method Methods 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
- 239000002530 phenolic antioxidant Substances 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
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- -1 softeners Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
Landscapes
- Insulated Conductors (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Inorganic Insulating Materials (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、燃焼時に有毒なハロゲ
ン系ガスを発生しない難燃性組成物に係り、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
性組成物に関するものである。[Industrial Application Field] The present invention relates to a flame retardant composition that does not generate toxic halogen gas when burned, and particularly for electric wires and
The present invention relates to a flame retardant composition suitable for application to cable insulation materials and sheath materials.
【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】一方、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
多量の煙が発生し、機器への腐食性、人体への有毒性等
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させないことが要望されるよう
になってきている。On the other hand, 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 corrosiveness to equipment and toxicity to the human body. Particularly recently, there has been a demand for not generating such halogen-based gases from the viewpoint of safety.
【０００４】このような情勢を踏まえ、発煙性、有毒性
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 light of these circumstances, inorganic flame retardants with extremely low smoke generation and toxicity have been attracting attention.
【０００５】[0005]
【発明が解決しようとする課題】ところで、上記の無機
系難燃剤は、難燃効果が小さいため、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必要があ
るが、得られる絶縁体やシースの引張特性、熱老化性の
低下を招いたり、押出加工性が低下することがある。[Problems to be Solved by the Invention] However, since the above-mentioned inorganic flame retardants have a small flame retardant effect, it is necessary to add a large amount of the inorganic flame retardant in order to impart a high degree of flame retardancy. This may lead to a decrease in the tensile properties and heat aging properties of the resulting insulator or sheath, or a decrease in extrusion processability.
【０００６】また、無機系難燃剤を高充填しやすくする
ために、ポリオレフィンとして、結晶化度が低いエチレ
ン共重合体を用いると、耐油性、加熱変形率が低下する
という問題がある。[0006] Furthermore, when an ethylene copolymer with a low degree of crystallinity is used as the polyolefin in order to facilitate high loading of an inorganic flame retardant, there is a problem that oil resistance and heat deformation rate are reduced.
【０００７】そこで、本発明は、上記に基づいてなされ
たものであり、良好な押出性、機械特性、熱老化性、耐
油性、加熱変形率を維持しながら高度の難燃性を付与す
ることが可能となる難燃性組成物を提供することを目的
とする。[0007] The present invention has been made based on the above, and provides a high degree of flame retardancy while maintaining good extrudability, mechanical properties, heat aging resistance, oil resistance, and heat deformation rate. The purpose of the present invention is to provide a flame retardant composition that enables the following.
【０００８】[0008]
【課題を解決するための手段】本発明者らは、燃焼時に
有毒なハロゲン系ガスを発生させない無機系難燃剤を混
和してなる難燃性組成物の知見を基に、難燃性を有し、
かつ押出性、機械特性、熱老化性、耐油性、加熱変形率
に優れている難燃性組成物を得るために種々の研究開発
を実施した結果、エチレン共重合体及び無機系難燃剤の
含有量を特定したのである。[Means for Solving the Problems] The present inventors have developed a flame-retardant composition based on the knowledge of a flame-retardant composition mixed with an inorganic flame retardant that does not generate toxic halogen gas when burned. death,
As a result of various research and development efforts to obtain a flame retardant composition that also has excellent extrudability, mechanical properties, heat aging resistance, oil resistance, and heat deformation rate, we have found that it contains an ethylene copolymer and an inorganic flame retardant. The amount was determined.
【０００９】すなわち、本発明の難燃性組成物は、コモ
ノマ量が１５〜２５重量％、結晶化度が１０〜３５％、
融点が８０〜９５℃又は １０５℃以上のエチレン共重
合体 １００重量部に対して無機系難燃剤５０〜５００
重量部を含有してなるものである。That is, the flame retardant composition of the present invention has a comonomer content of 15 to 25% by weight, a crystallinity of 10 to 35%,
50 to 500 parts by weight of an inorganic flame retardant per 100 parts by weight of an ethylene copolymer with a melting point of 80 to 95°C or 105°C or higher
parts by weight.
【００１０】本発明においてエチレン共重合体としては
、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、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、エチレンブテンジエ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。In the present invention, the ethylene copolymer includes ethylene propylene copolymer, ethylene propylene diene terpolymer, ethylene vinyl acetate copolymer,
Examples include ethylene ethyl acrylate copolymer, ethylene butene copolymer, and ethylene butene diene terpolymer, and these can be used alone or in combination of two or more.
【００１１】このエチレン共重合体のコモノマ量は１５
〜２５重量％及びその結晶化度は１０〜３５重量％の範
囲とする必要があり、コモノマ量が１５重量％未満ある
いは結晶化度が３５重量％を越えると機械特性が悪くな
り、コモノマ量が２５重量％を越える場合あるいは結晶
化度が１０重量％未満では耐油性、加熱変形率が悪くな
る。The amount of comonomer in this ethylene copolymer is 15
~25% by weight and its crystallinity must be in the range of 10 to 35% by weight; if the amount of comonomer is less than 15% by weight or the degree of crystallinity exceeds 35% by weight, mechanical properties will deteriorate and the amount of comonomer will deteriorate. If it exceeds 25% by weight or if the crystallinity is less than 10% by weight, oil resistance and heat deformation rate will deteriorate.
【００１２】また、エチレン共重合体の融点は、８０〜
９５℃又は １０５℃以上の範囲とする必要があり、融
点が８０℃未満では耐油性、加熱変形率が悪くなり、９
５℃を越え １０５℃未満の範囲では熱老化性が劣る。[0012] Furthermore, the melting point of the ethylene copolymer is 80~
It is necessary to keep the melting point in the range of 95℃ or 105℃ or higher.If the melting point is lower than 80℃, oil resistance and heat deformation rate will deteriorate,
In the range of more than 5°C and less than 105°C, heat aging properties are poor.
【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
。無機系難燃剤の含有量は、エチレン共重合体 １００
重量部に対して、５０〜５００ 重量部の範囲とする必
要があり、含有量が５０重量部未満では目的とする難燃
性を付与できず、 ５００重量部を越えると加工性が著
しく悪くなり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 inorganic flame retardant is ethylene copolymer 100
The content must be in the range of 50 to 500 parts by weight; if the content is less than 50 parts by weight, the desired flame retardancy cannot be imparted, and if it exceeds 500 parts by weight, processability will deteriorate significantly. Extrusion becomes difficult.
【００１４】本発明では、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切であり、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。
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。In the present invention, in addition to the above components, crosslinking agents, antioxidants, lubricants, softeners, dispersants, etc. may be added as appropriate. Suitable crosslinking agents include organic peroxides such as dicumyl peroxide and 3-bis(t-butylperoxyisopropyl)benzene, and crosslinking aids such as sulfur, ethylene dimethacrylate, and diallyl phthalate. , P-quinone dioxime, etc. may be used in combination. Further, in the case of crosslinking using ionizing radiation such as an electron beam, it is common to add a reactive monomer such as trimethylol pantrimeritate or triallylisocyanurate as a crosslinking aid. As an antioxidant, phenyl-α
-Amine antioxidants such as naphthylamine, N,N-di-β-naphthyl-P-phenylenediamine, and phenolic antioxidants such as 2,6-di-t-butyl-4-methylphenol and hindered phenol. can be mentioned.
【００１５】[0015]
【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.
【００１６】表１の実施例１〜４および比較例１〜４の
各欄に示すような配合に従って各種成分を １２０℃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、 １５０℃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、絶縁電線（ケーブル）を作製した。なお、
実施例１及び比較例３については押出被覆に続いて １
３ｋｇ／ｃｍ２ の水蒸気雰囲気中に３分間保持して架
橋した。[0016] According to the formulations shown in the columns of Examples 1 to 4 and Comparative Examples 1 to 4 in Table 1, various ingredients were put into a 6-inch roll maintained at 120°C and kneaded by rolls. These were placed in a 40m/
Using an extruder (L/D=25), an insulated wire (cable) was produced by extrusion coating the outer circumference of three twisted insulated wire cores with an outer diameter of 5.3 mm to a thickness of 2.0 mm. . In addition,
For Example 1 and Comparative Example 3, extrusion coating was followed by 1
Crosslinking was carried out by holding the sample in a steam atmosphere of 3 kg/cm2 for 3 minutes.
【００１７】このように作製した絶縁電線（試料）の評
価を押出性、機械特性、熱老化性、耐油性、加熱変形率
及び難燃性について行い、その結果を表１の下欄に示す
。各評価方法は次の通りである。The insulated wire (sample) thus produced was evaluated for extrudability, mechanical properties, heat aging resistance, oil resistance, thermal deformation rate, and flame retardance, and the results are shown in the lower column of Table 1. Each evaluation method is as follows.
【００１８】押出性（押出加工性）は、４０ｍ／ｍ押出
機での押出時の状況及び外観で判断した。[0018] Extrudability (extrusion processability) was judged based on the condition and appearance during extrusion using a 40 m/m extruder.
【００１９】機械特性は、ケーブルから保護シースを剥
離し、日本電線工業規格第３９１号に準じＪＬＳ Ｋ
７１１２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不良とした。Mechanical properties were determined by peeling off the protective sheath from the cable and measuring JLSK according to Japan Cable Industry Standard No. 391.
A sample punched out with No. 7112 dumbbell No. 3 was subjected to a tensile test at 200 mm/min using a Schopper type tensile tester, and those with a tensile strength of 1.0 kg/mm or more and an elongation of 350% or more were considered good. Those below were considered defective.
【００２０】熱老化性は、剥離した保護シースをＢＳ６
７２４に準じ １００℃で７日間熱劣化後における引張
強さ残率と伸び残率を求めた。引張強さ残率７０％以上
、伸び残率７０％以上のものを良とし、この値未満のも
のを不良とした。[0020] Heat aging property is determined by BS6
724, the tensile strength retention and elongation retention after thermal deterioration at 100°C for 7 days were determined. 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 poor.
【００２１】耐油性は、ＪＩＳ Ｋ６３０１に準じ、
７０℃の絶縁油（ＡＳＴＭ＃２号油）に４時間浸漬し、
その後、取出し、２０℃で２４時間放置後、引張試験を
行った。
引張強さ残率８０％以上、伸び残率６０％以上のものを
良とし、この値未満のものを不良とした。[0021] Oil resistance is according to JIS K6301.
Immersed in insulating oil (ASTM #2 oil) at 70℃ for 4 hours,
Thereafter, it was taken out, left at 20° C. for 24 hours, and then subjected to a tensile test. Those with a tensile strength retention of 80% or more and elongation retention of 60% or more were considered good, and those below these values were considered poor.
【００２２】加熱変形率は、ＢＳ６７２４に準じ、ケー
ブルに試験装置をのせて規定のおもりを置き、８０℃で
４時間加熱した後、室温まで放冷した。加熱後の試料の
厚さを測定し、加熱前に測定した試料の厚さから加熱変
形率を次式より算出した。加熱変形率が５０％未満のも
のを良とし、これ以上のものは不良とした。The heating deformation rate was determined in accordance with BS6724. A testing device was placed on the cable, a specified weight was placed on the cable, the cable was heated at 80° C. for 4 hours, and then allowed to cool to room temperature. The thickness of the sample after heating was measured, and the heating deformation rate was calculated from the thickness of the sample measured before heating using the following formula. Those with a heating deformation rate of less than 50% were evaluated as good, and those with a heating deformation rate of less than 50% were evaluated as poor.
【００２３】加熱変形率＝ （加熱前の試料の厚さ−加
熱後の試料の厚さ）／加熱前の試料の厚さ但し、試料の
厚さの単位は、ｍｍである。Heating deformation rate = (Thickness of sample before heating - Thickness of sample after heating)/Thickness of sample before heating However, the unit of sample thickness is mm.
【００２４】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.
【００２５】[0025]
【表１】[Table 1]
【００２６】表１に示される結果から、本発明の難燃性
組成物を用いた実施例１〜４の試料は、いずれも難燃性
に合格し、押出性、機械特性、熱老化性、耐油性、加熱
変形率にも優れている。これに対して、エチレン共重合
体の融点が規定値を越える比較例１は、熱老化性が不良
であり、そのコモノマ量が規定値を越え、かつ融点が規
定値未満の比較例２は、耐油性、加熱変形率が不良であ
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。From the results shown in Table 1, the samples of Examples 1 to 4 using the flame retardant composition of the present invention all passed the flame retardant test, and had excellent extrudability, mechanical properties, heat aging resistance, It also has excellent oil resistance and heat deformation rate. On the other hand, Comparative Example 1, in which the melting point of the ethylene copolymer exceeds the specified value, has poor heat aging properties, and Comparative Example 2, in which the comonomer amount exceeds the specified value and the melting point is below the specified value, Oil resistance and heat deformation rate were poor. In addition, Comparative Example 3, in which the content of inorganic flame retardant was less than the specified value, failed in terms of flame retardancy, and Comparative Example 4, in which the content exceeded the specified value, had poor extrudability and could not be molded. Ta.
【００２７】従って、コモノマ量、結晶化度及び融点が
規定値のエチレン共重合体に無機系難燃剤を規定量含有
することにより、垂直トレイ難燃試験レベルに合格する
高度の難燃性を有し、かつ押出性、機械特性、熱老化性
、耐油性、加熱変形率に優れている難燃性組成物が得ら
れることになる。Therefore, by containing a specified amount of an inorganic flame retardant in an ethylene copolymer having a specified amount of comonomer, degree of crystallinity, and melting point, it has a high degree of flame retardancy that passes the vertical tray flame retardant test level. In addition, a flame-retardant composition having excellent extrudability, mechanical properties, heat aging resistance, oil resistance, and heat deformation rate can be obtained.
【００２８】[0028]
【発明の効果】以上要するに本発明によれば、良好な押
出性、機械特性、熱老化性、耐油性、加熱変形率を維持
しながら高度の難燃性を付与でき、しかも燃焼時に有毒
なハロゲン系ガスが発生しない難燃性組成物が得られる
という優れた効果を発揮する。In summary, according to the present invention, a high degree of flame retardance can be imparted while maintaining good extrudability, mechanical properties, heat aging resistance, oil resistance, and heat deformation rate, and in addition, halogens, which are toxic during combustion, can be imparted. It exhibits the excellent effect of providing a flame-retardant composition that does not generate system gas.
Claims (1)
化度が１０〜３５％、融点が８０〜９５℃又は １０５
℃以上のエチレン共重合体 １００重量部に対して無機
系難燃剤５０〜５００ 重量部を含有してなることを特
徴とする難燃性組成物。Claim 1: A comonomer amount of 15 to 25% by weight, a crystallinity of 10 to 35%, and a melting point of 80 to 95°C or 105
A flame retardant composition comprising 50 to 500 parts by weight of an inorganic flame retardant per 100 parts by weight of an ethylene copolymer having a temperature of 50 to 500 parts by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3015417A JPH04255739A (en) | 1991-02-06 | 1991-02-06 | flame retardant composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3015417A JPH04255739A (en) | 1991-02-06 | 1991-02-06 | flame retardant composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04255739A true JPH04255739A (en) | 1992-09-10 |
Family
ID=11888185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3015417A Pending JPH04255739A (en) | 1991-02-06 | 1991-02-06 | flame retardant composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04255739A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| JP2021125396A (en) * | 2020-02-06 | 2021-08-30 | 日立金属株式会社 | cable |
-
1991
- 1991-02-06 JP JP3015417A patent/JPH04255739A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| JP2021125396A (en) * | 2020-02-06 | 2021-08-30 | 日立金属株式会社 | cable |
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