JPS6097509A - flame retardant electrical cable - Google Patents
flame retardant electrical cableInfo
- Publication number
- JPS6097509A JPS6097509A JP20433583A JP20433583A JPS6097509A JP S6097509 A JPS6097509 A JP S6097509A JP 20433583 A JP20433583 A JP 20433583A JP 20433583 A JP20433583 A JP 20433583A JP S6097509 A JPS6097509 A JP S6097509A
- Authority
- JP
- Japan
- Prior art keywords
- magnesium hydroxide
- flame
- coupling agent
- parts
- weight
- 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 description 10
- 239000003063 flame retardant Substances 0.000 title claims description 10
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 21
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 21
- 239000000347 magnesium hydroxide Substances 0.000 claims description 21
- 229920000098 polyolefin Polymers 0.000 claims description 9
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 8
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 6
- 239000007822 coupling agent Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 239000011247 coating layer Substances 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 229910052736 halogen Inorganic materials 0.000 description 4
- 150000002367 halogens Chemical class 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000003963 antioxidant agent Substances 0.000 description 3
- -1 ethylene propylene diene Chemical class 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
- 230000002588 toxic effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000003078 antioxidant effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 239000003431 cross linking reagent Substances 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- WRKCIHRWQZQBOL-UHFFFAOYSA-N octyl dihydrogen phosphate Chemical compound CCCCCCCCOP(O)(O)=O WRKCIHRWQZQBOL-UHFFFAOYSA-N 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 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
- QTWJRLJHJPIABL-UHFFFAOYSA-N 2-methylphenol;3-methylphenol;4-methylphenol Chemical compound CC1=CC=C(O)C=C1.CC1=CC=CC(O)=C1.CC1=CC=CC=C1O QTWJRLJHJPIABL-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
- 206010073261 Ovarian theca cell tumour Diseases 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
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- HTDKEJXHILZNPP-UHFFFAOYSA-N dioctyl hydrogen phosphate Chemical compound CCCCCCCCOP(O)(=O)OCCCCCCCC HTDKEJXHILZNPP-UHFFFAOYSA-N 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 description 1
- WOXXJEVNDJOOLV-UHFFFAOYSA-N ethenyl-tris(2-methoxyethoxy)silane Chemical compound COCCO[Si](OCCOC)(OCCOC)C=C WOXXJEVNDJOOLV-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
- 238000007765 extrusion coating Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000012796 inorganic flame retardant Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002530 phenolic antioxidant Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 208000001644 thecoma Diseases 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 231100000563 toxic property Toxicity 0.000 description 1
Landscapes
- Organic Insulating Materials (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
［発明の背景と目的］
本発明は燃焼時にハロゲン系ガスを発生しない難燃性電
気ケーブルに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Background and Objects of the Invention] The present invention relates to a flame-retardant electrical cable that does not generate halogen gas when burned.
電気ケーブルの被覆材料としてはポリオレフィンが多く
用いられてきている。Polyolefins have been widely used as coating materials for electrical cables.
最近の趨勢として、原子力発電所用ケーブルや車両用ケ
ーブルに垂直トレイ難燃試験レベルの高度の難燃性が要
求されるようになってきた。このようなポリマを難燃化
する方法としてはハロゲン含有化合物、リン含有化合物
等を混和する方法が用いられてきたが、これらは火災時
多量の煙を出し、また人体に有害なガスを発生ずるなど
問題視されている。As a recent trend, cables for nuclear power plants and cables for vehicles are required to have high flame retardancy at the level of vertical tray flame retardant tests. The method of making such polymers flame retardant has been to mix halogen-containing compounds, phosphorus-containing compounds, etc., but these produce a large amount of smoke in the event of a fire and also generate gases that are harmful to the human body. etc. are considered problematic.
このような情勢を踏まえ、発煙性、有毒性の非當に少な
い無機系難燃剤が注目されるようになフてきた。なかで
も、難燃性を付与するのにはポリマの分解温度近くで結
晶水を放出し、しかも吸熱量の大きい水酸化マグネシウ
ムが特に有効である。In light of this situation, inorganic flame retardants with very low smoke-emitting and toxic properties have begun to attract attention. Among these, magnesium hydroxide is particularly effective in imparting flame retardancy, as it releases water of crystallization near the decomposition temperature of the polymer and absorbs a large amount of heat.
しかし、高度の難燃性を４１与するためには水酸化マグ
ネシウムを多量加える必要があるにもかかわらず、ポリ
マと水酸化マグネシウムの相溶性が悪く、押出性の低下
を招くという重大な問題を持っているため使用範囲が限
定されていた。However, although it is necessary to add a large amount of magnesium hydroxide to provide a high degree of flame retardancy, there is a serious problem that the compatibility between the polymer and magnesium hydroxide is poor, leading to a decrease in extrudability. Because they have it, their range of use is limited.
本発明は上記した従来技術の問題点を解消するためにな
されたもので、ポリオレフィンと水酸化マグネシウムと
の相溶性を改善することによって多量の水酸化マグネシ
ウムの含有を可能とし、従って高度の難燃性を付与でき
る有毒なハロゲン系ガスを発生しない難燃性電気ケーブ
ルの提供を目的とするものである。The present invention was made in order to solve the problems of the prior art described above, and by improving the compatibility between polyolefin and magnesium hydroxide, it is possible to contain a large amount of magnesium hydroxide, thereby achieving a high degree of flame retardancy. The object of the present invention is to provide a flame-retardant electric cable that does not generate toxic halogen-based gases that can impart properties.
［発明の概要コ
本発明の電気ケーブルは、ポリオレフィン１００重量部
に対し、チタネートカップリング剤またはシランカップ
リング剤で表面処理した水酸化マグネシウムを５０〜５
００重量部含有する組成物の被覆層を絶縁線心外周に設
けたことを特徴とするものである。[Summary of the Invention] The electric cable of the present invention contains 50 to 5 parts of magnesium hydroxide surface-treated with a titanate coupling agent or a silane coupling agent to 100 parts by weight of polyolefin.
The present invention is characterized in that a coating layer of a composition containing 0.00 parts by weight is provided on the outer periphery of the insulated wire core.
本発明におけるポリオレフィンとしては、エチレンプロ
ピレンコポリマ、エチレンプロピレンジエンターボリマ
、ポリエチレン、エチレン酢酸ビニルコポリマ、エチレ
ンエチルアクリレートコポリマ、エチレンブテンコポリ
マとい）たものがあげられ、これらは単独または２種以
上混合して使用可能である。Examples of the polyolefin in the present invention include ethylene propylene copolymer, ethylene propylene diene turbo polymer, polyethylene, ethylene vinyl acetate copolymer, ethylene ethyl acrylate copolymer, and ethylene butene copolymer, which may be used alone or in combination of two or more. Available for use.
このようなポリオレフィンと水酸化マグネシウムとは相
溶性が悪いため、ロールやパンバリ混練時に凝集が生じ
て押出性が悪化する。これは水酸化マグネシウムがイオ
ン性結晶であるのに対し、ポリオレフィンは無極性ある
いはわずかに極性を有している程度であり、水酸化マグ
ネシウムとの間の親和力が小さいためである。Since such polyolefin and magnesium hydroxide have poor compatibility, agglomeration occurs during roll or pan-burr kneading, resulting in poor extrudability. This is because magnesium hydroxide is an ionic crystal, whereas polyolefin is non-polar or only slightly polar, and has a small affinity with magnesium hydroxide.
これを改善するため、本発明では水酸化マグネシウムを
チタネートカップリング剤またはシランカップリング剤
で表面処理している。In order to improve this, in the present invention, magnesium hydroxide is surface-treated with a titanate coupling agent or a silane coupling agent.
チタネートカップリング剤としては、イソプロピル−ト
リ（ジオクチルホスフェート）チタネート、チタニウム
ジ（オクチルホスフェート）オクシアセテート等があり
、シランカップリング剤としては、ビニルトリエトキシ
シラン、ビニルトリス（β−メトキシエトキシ）シラン
なとがある。Examples of titanate coupling agents include isopropyl-tri(dioctylphosphate) titanate and titanium di(octylphosphate) oxyacetate, and examples of silane coupling agents include vinyltriethoxysilane and vinyltris(β-methoxyethoxy)silane. There is.
表面処理は、シランカップリング剤またはチタネートカ
ップリング剤をメチルアルコール、エチルアルコール等
の溶媒に溶かし、これを水あるいはアルコールの水酸化
マグネシウム懸濁液中に撹拌しながら加え均一に表面処
理する。その後、１００℃以上で乾燥、粉砕して粉末化
する。For surface treatment, a silane coupling agent or a titanate coupling agent is dissolved in a solvent such as methyl alcohol or ethyl alcohol, and this is added to a magnesium hydroxide suspension in water or alcohol with stirring to uniformly treat the surface. Thereafter, it is dried at 100° C. or higher and pulverized into powder.
表面処理した水酸化マグネシウムはポリオレフィン１０
０重量部に対し、６０〜５００重量部の範ＷＩで含有せ
しめる必要がある。５０重量部以下では目的とする難燃
性を付与できず、５００重量部を越えると押出加工性が
著しく低下して成形が不可能になる。Surface treated magnesium hydroxide is polyolefin 10
It is necessary to contain it in the range WI of 60 to 500 parts by weight relative to 0 parts by weight. If it is less than 50 parts by weight, the desired flame retardancy cannot be imparted, and if it exceeds 500 parts by weight, extrusion processability is significantly reduced and molding becomes impossible.
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、分散剤等を添加してもよい。In the present invention, in addition to the above components, a crosslinking agent, antioxidant, lubricant, softener, dispersant, etc. may be added.
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ビル）ベンゼンに代表され
る有機過酸化物が適切である。As a crosslinking agent, dicumyl peroxide, 3-bis(t
-butylperoxyisopropyl)benzene is suitable.
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−ジー１−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
ル系酸化防止剤等があげられる。As an antioxidant, phenyl-α-naphthylamine, N
, amine antioxidants such as N'-di-β-naphthyl-p-phenylenediamine, 2,6-di-1-butyl-4-
Examples include phenolic antioxidants such as methylphenol and hindered phenol.
かかる組成物を絶縁線心外周に押出被覆することにより
、高度の難燃性を有する電気ケーブルを得ることが５Ｉ
能となる。It is possible to obtain an electrical cable with a high degree of flame retardancy by extrusion coating the outer periphery of an insulated wire core with such a composition.
Becomes Noh.
［実施例および比較例］
各（■成分を第１表に示すような配合割合でも）て１０
０℃に保持された６インチロールに投入してロール混線
を行ない、混練後】２０℃に保持された４０ｍ／ｒｎ押
出ＩＮ （Ｌ／Ｄ＝２５）を用い、外径３．Ｏｒｎｍの
絶縁線心を３本撚り合わせた外周に２．０ｍｒｎ厚で押
出被覆し、続いて１３ｋｇ／Ｃ１♂の水蒸気雰囲気中に
３分間保持して架４ｆｆＬｚで各種ケーブルを作成した
。[Examples and Comparative Examples] Each (■ Even if the ingredients are mixed in the proportions shown in Table 1) 10
The mixture was put into a 6-inch roll kept at 0°C, and the rolls were mixed, and after kneading] an outer diameter of 3. The outer periphery of three Ornm insulated wire cores twisted together was coated by extrusion to a thickness of 2.0 mrn, and then kept in a steam atmosphere of 13 kg/C1♂ for 3 minutes to create various cables on a rack of 4ffLz.
昏倒で得られたケーブルの評価結果は第１表の下欄に示
す通りである。The evaluation results of the cable obtained in the coma are shown in the lower column of Table 1.
分散性は、ロール混練後１ｍｍ厚にシー）・出しし、２
０倍の顕微鏡により観察した。The dispersibility was determined by roll kneading, sheeting to a thickness of 1 mm, and 2
Observation was made using a 0x microscope.
Ｂ燃性＝ｆ価は、垂直にケーブルを８水運へ、下から７
万ＢＴＵの炎を２０分間当て、自己消炎すれば合格であ
り、自己消炎ぜず全焼するものは不合格である。B flammability = f number, run the cable vertically to 8 water transport, 7 from the bottom
If the flame self-extinguishes when exposed to a flame of 10,000 BTU for 20 minutes, it passes; if it burns out without self-extinguishing, it fails.
第１表からも明らかな通り、本発明に係る実施例１〜６
に示す材料は、ポリマと水酸−化マグネシウムとの相溶
性が改善されて分散性が良好となり、その結果水酸化マ
グネシウムを多量に含有させても押出加工性に優れ、垂
直トレイ難燃試験に合格する。As is clear from Table 1, Examples 1 to 6 according to the present invention
The material shown in Figure 1 has improved compatibility between the polymer and magnesium hydroxide, resulting in good dispersibility.As a result, it has excellent extrusion processability even when containing a large amount of magnesium hydroxide, and has passed the vertical tray flame retardant test. Pass.
これに対し、水酸化マグネシウムの含有量が少ない比較
例１は難燃性が不合格であり、含有量が５００重量部を
越える比較例２押出性が悪い。。また、表面処理なしの
水酸化マグネシウムを用いた比較例３，４はポリマへの
水酸化マグネシウムの分散性が悪く、その結果押出性が
悪い。On the other hand, Comparative Example 1 with a small content of magnesium hydroxide failed in flame retardancy, and Comparative Example 2 with a content of more than 500 parts by weight had poor extrudability. . Further, in Comparative Examples 3 and 4 using magnesium hydroxide without surface treatment, the dispersibility of magnesium hydroxide in the polymer was poor, resulting in poor extrudability.
［発明の効果］
以上説明してきた通り、本発明ではポリオレフィンに難
燃充填剤として、チタネートカップリング剤またはシラ
ンカップリング剤で表面処理した水酸化マグネシウムを
用いることにより、ポリマと水酸化マグネシウムとの相
溶性を向上し、これによって多量の水酸化マグネシウム
を含有した組成物の被覆層を形成することが可能となり
、高度の難燃性を有し、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ケーブルを得ることができるよ
うになる。[Effects of the Invention] As explained above, in the present invention, by using magnesium hydroxide surface-treated with a titanate coupling agent or a silane coupling agent as a flame-retardant filler in polyolefin, the bond between the polymer and magnesium hydroxide is improved. This improves compatibility, which makes it possible to form a coating layer of a composition containing a large amount of magnesium hydroxide, which is highly flame retardant and does not generate toxic halogen gases when burned. You will be able to get the cable.
Claims (2)
カップリング剤またはシランカップリング剤で表面処理
した水酸化マグネシウムを５０〜５００重量部含有する
組成物からなる被覆層が、少なくとも１本の絶縁線心の
外周に設けられていることを特徴とする難燃性電気ケー
ブル。(1) A coating layer made of a composition containing 50 to 500 parts by weight of magnesium hydroxide surface-treated with a titanate coupling agent or a silane coupling agent per 100 parts by weight of polyolefin is coated on at least one insulated wire core. A flame-retardant electric cable characterized by being provided around the outer periphery.
項記載の難燃性電気ケーブル。(2) The above-mentioned coating layer is cross-linked.
Flame-retardant electrical cables as described in Section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20433583A JPS6097509A (en) | 1983-10-31 | 1983-10-31 | flame retardant electrical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20433583A JPS6097509A (en) | 1983-10-31 | 1983-10-31 | flame retardant electrical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6097509A true JPS6097509A (en) | 1985-05-31 |
Family
ID=16488791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20433583A Pending JPS6097509A (en) | 1983-10-31 | 1983-10-31 | flame retardant electrical cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6097509A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6586090B2 (en) | 2000-02-24 | 2003-07-01 | Nitto Denko Corporation | Adhesive tape and substrate for adhesive tape |
| US6773806B1 (en) | 1999-11-04 | 2004-08-10 | Nitto Denko Corporation | Adhesive tape and substrate for adhesive tape |
-
1983
- 1983-10-31 JP JP20433583A patent/JPS6097509A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6773806B1 (en) | 1999-11-04 | 2004-08-10 | Nitto Denko Corporation | Adhesive tape and substrate for adhesive tape |
| US6586090B2 (en) | 2000-02-24 | 2003-07-01 | Nitto Denko Corporation | Adhesive tape and substrate for adhesive tape |
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