JPH0463904B2 - - Google Patents
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- Publication number
- JPH0463904B2 JPH0463904B2 JP60067978A JP6797885A JPH0463904B2 JP H0463904 B2 JPH0463904 B2 JP H0463904B2 JP 60067978 A JP60067978 A JP 60067978A JP 6797885 A JP6797885 A JP 6797885A JP H0463904 B2 JPH0463904 B2 JP H0463904B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- parts
- eea
- eva
- ethylene
- 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.)
- Expired - Lifetime
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 19
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 claims description 19
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 15
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 15
- 239000000377 silicon dioxide Substances 0.000 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 class 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 8
- 229920000573 polyethylene Polymers 0.000 claims description 5
- -1 polyethylene Polymers 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 239000011342 resin composition Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 3
- 239000005042 ethylene-ethyl acrylate Substances 0.000 description 15
- 239000000203 mixture Substances 0.000 description 15
- 238000004132 cross linking Methods 0.000 description 6
- 239000003063 flame retardant Substances 0.000 description 6
- 230000000704 physical effect Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- WHHGLZMJPXIBIX-UHFFFAOYSA-N decabromodiphenyl ether Chemical compound BrC1=C(Br)C(Br)=C(Br)C(Br)=C1OC1=C(Br)C(Br)=C(Br)C(Br)=C1Br WHHGLZMJPXIBIX-UHFFFAOYSA-N 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- 101100389815 Caenorhabditis elegans eva-1 gene Proteins 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 1
- 230000003712 anti-aging 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
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- WJTCGQSWYFHTAC-UHFFFAOYSA-N cyclooctane Chemical compound C1CCCCCCC1 WJTCGQSWYFHTAC-UHFFFAOYSA-N 0.000 description 1
- 239000004914 cyclooctane Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000012772 electrical insulation material Substances 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- GVYLCNUFSHDAAW-UHFFFAOYSA-N mirex Chemical compound ClC12C(Cl)(Cl)C3(Cl)C4(Cl)C1(Cl)C1(Cl)C2(Cl)C3(Cl)C4(Cl)C1(Cl)Cl GVYLCNUFSHDAAW-UHFFFAOYSA-N 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002530 phenolic antioxidant Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- 125000005372 silanol group Chemical group 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Description
〔技術分野〕
本発明は樹脂組成物に関し、更に詳しくはエチ
レン−酢酸ビニル共重合体（以下EVAという）
並びにエチレン−エチルアクリレート共重合体
（以下EEAという）の少なくとも１種、及び直鎖
状ポリエチレン（以下LPEという）の樹脂成分
に、特定の二種類の化合物と特定の難燃剤とを配
合して成る組成物に関する。
〔従来技術〕
エチレン系重合体又はエチレン−エチルアクリ
レート共重合体（EEA）は優れた電気絶縁性を
有し、また放射線架橋、有機過酸化物架橋、シラ
ン化合物を用いるシラン架橋等各種の架橋手段を
適宜に採用して架橋出来、惹いては各種物性を改
善出来る利点があるため、従来から電気絶縁材料
を始め、各種の分野に巾広く使用されて来た。し
かしながら最近各種分野の技術レベルが向上し、
電気機器、車輌、自動車等の各分野に於いて絶縁
電線就中電子ワイヤーといわれる絶縁電線のより
高度の特性が要求されるようになり、耐油性、絶
縁電線製造時の加工性、難燃性、高温絶縁強度性
（Cut through property）等がより高度に要求さ
れるようになつて来た。
〔発明の目的並びにその概要〕
本発明者は従来からEVA又はEEA組成物につ
いて研究を続けて来たが、特に最近の技術レベル
の向上に応じた各種物性の特に優れたEVA又は
EEA組成物を開発すべく研究を続けて来た。そ
してこの研究に於いてEVA並びにEEAの少なく
とも１種と直鎖状ポリエチレン（以下LPEとい
う）とを特定量併用するときは、耐油性が、
EVA並びに（又は）EEAの特性をそのまま保持
したままで更に一段と向上することを見出した。
また更に研究を押し進める段階でEVA及びEEA
の少なくとも１種と、LPEとの併用組成に、特
にSb2O3と臭素系又は（及び）塩素系難燃剤とを
配合するときは、難燃性並びに耐加熱変形性がよ
り一段と優れるという新事実を見出した。
本発明者は引き続き上記特定配合組成物につい
て研究を続けた結果、この特定配合組成物に焼成
微粉末湿式シリカという特定の化合物を更に追加
配合するときは、上記特定配合組成の優れた各特
性即ち、耐油性、並びに耐加熱変形性をそのまま
保持した上に、更に難燃性が著しく向上するとと
もに以外にも、湿式シリカであるにもかかわら
ず、疎水化された乾式シリカと同等に吸水性が極
めて少なく、このため浸水電気特性が初期値を維
持し、又純度の高いものは耐熱老化特性が優れる
ことを見出し、ここに本発明を完成するに至つ
た。即ち本発明は、エチレン−酢酸ビニル共重合
体又は（及び）エチレン−エチルアクリレート共
重合体100重量部、直鎖状ポリエチレン５〜120重
量部、臭素系又は（及び）塩素系難燃剤20〜80重
量部、Sb2O3 ５〜50重量部及び焼成微粉末湿式
シリカ５〜50重量部を含有して成る樹脂組成物に
係るものである。
〔発明の効果〕
本発明に於いてはEVA並びにEEAの少なくと
も１種とから成る樹脂配合物に、Sb2O3と臭素系
又は（及び）塩素系難燃剤とを含有させることに
より、得られる組成物就中この組成物を架橋する
ことにより、耐油性、耐加熱変形性並びに難燃性
が著しく優れるという効果がある。そしてこれ等
の各特性を亳も損なうことなく、更に焼成微粉末
湿式シリカを配合することにより更に難燃性が著
しく向上するという効果がある。加えて浸水時の
電気特性が（湿式シリカを使用しているにもかか
わらず）初期値を維持するという効果がある。
〔発明の構成〕
本発明の組成物は基本的には、EVA並びに
EEAの少なくとも１種100重量部、及びLPE5〜
120重量部好ましくは20〜80重量部を含有して成
るものである。
本発明に於いて使用されるEVAとしては、そ
の酢酸ビニル含量が20重量％以下好ましくは15重
量％以下のものであり、そのメルトインデツクス
（以下M.I.という）としても0.2〜５程度のものが
好ましい。EEAもエチルアクリレート含量が20
重量％以下、M.I.は0.2〜1.0が好ましい。これ等
EVA及びEEAは夫々単独で使用されても、また
併用されても良く、この併用の際の割合もEVA0
〜100重量％並びにEEA100〜０重量％の広い範
囲から適宜に選択されれば良い。またLPEとし
ては低密度のものが好ましく、たとえば密度0.91
〜0.93ｇ／cm3程度のものを好ましいものとして例
示出来る。他の好ましいものとしては炭素数が４
〜８程度のものを挙げることが出来る。その分子
量としてもかなり広い範囲のものが使用出来通常
５万〜50万程度好ましくは８万〜20万程度のもの
を使用する。またLPE自体はその製法には何等
限定されず本発明の目的に合致するLPEが得ら
れるかぎり、各種の製法で製造されたものがいず
れも使用出来る。
本発明で使用する焼成微粉末湿式シリカとは、
常法により製造した湿式シリカを高温通常800℃
以上の高温で熱処理することにより、表面シラノ
ール基を減少さや、水分移動を少なくし、且つ屈
折率を大きくしたシリカであり、強熱減量2.0％
以下、屈折率1.448以上、平均粒径１〜4μのもの
である。このシリカとしては塩野義製薬(株)のカー
プレツクスCS5〜７がある。
本発明の於いては、臭素系難燃剤としては従来
から用いられているものがいずれも有効に使用出
来、具体例としてはたとえばデカブロモジフエニ
ルオキサイド（例えば三井東圧フアイン(株)のプラ
ネロンDB−100）、ポリ（トリブロモ）スチレン
（日産フエロ有機化学(株)のパイロチエツク68PB）、
エチレングリコールビス（ペンダブロモフエニ
ル）エーテル（日産フエロ有機化学(株)のパイロチ
エツク77B）、また塩素系難燃剤としてはビス
（１，２，５，６−ヘキサクロロジシクロペンテ
ノ）シクロオクタン（Hooker chemicals and
plastic Co.のデクロランプラス25）を例示する
ことが出来る。これ等難燃剤はEVA並びにEEA
の少なくとも１種100重量部に対して20〜80重量
部好ましくは30〜50重量部の割合で使用される。
また本発明に於いてSb2O3はEVA並びにEEA
の少なくとも１種100重量部に対し５〜50重量部
好ましくは10〜30重量部配合され、また焼成微粉
末湿式シリカも同様に100重量部に対し５〜50重
量部好ましくは10〜30重量部配合される。
本発明組成物には更に必要に応じてその他の他
の通常の各種添加剤を添加することが出来る。こ
の際の他の添加剤としては、たとえばその他の難
燃剤、各種老化防止剤、無機充填剤等があり、ま
た架橋剤、架橋助剤等も使用出来することが出来
る。
〔実施例〕
以下に実施例を示して本発明をより具体的に説
明する。但し下記例に於いて部とあるは重量部を
意味するものとする。
実施例１〜７並びに比較例１〜２
第１表に示す配合割合で各成分を所定量配合充
分混練して組成物となした。この組成物について
常法に基づいて電線（導体は0.813mmφの軟銅単
線で、絶縁厚0.38mm）を製造し、30Mradの電子
線量で照射架橋した。各種物性を測定した。この
結果を第２表に示す。但し物性は夫々次の方法に
より測定した。
＜耐油性＞
100℃のASTM2号オイルの中に96時間浸漬後
室温に放置し、引張強さの残率が初期の50％以
上、伸びの残率が65％以上の時合格とする。
＜難燃性＞
UL1581に準じ、水平にした電線に対し、一定
傾斜のバーナーから一定量の炎を15秒間あてた後
15秒間炎を取り除き、これを５回繰り返す。電線
が一定量以上燃え移らないか、もしくは灰が滴下
して下に敷いた綿に燃え移らなければ合格とす
る。
＜加工性＞
コンパウンドを30mmφの押出機で銅線上に被覆
した時、押出した表面外観が滑らかであれば合格
とする。
＜加熱変形性＞
150℃の温度で電線上に250gの荷重を30分かけ
た時の変形率が40％以下であれば合格とする。
＜耐熱老化性＞
136℃で７日間、老化し、引張残率70％以上、
伸び残率65％以上、破壊電圧の残率50％以上であ
れば合格とする。
＜浸水後の電気特性＞
室温の水に１日間浸水した後、体積抵抗率、誘
電率、誘電正接、破壊電圧を測定した値が初期と
大きく変化がなければ良好とする。特に変化は誘
電正接で大略判定される。
但し第１表中で重合体として使用した各種重合
体は夫々次のものを示す。
LPE−１： 密度 0.920
M.I. 1.0
炭素数 ８
LPE−２： 密度 0.925
M.I. 4.0
炭素水 ４
EVA−１： 酢酸ビニル（以下EVという）含量
15wt％
M.I. 0.5
EVA−２：EV含量 10wt％
M.I. 1.0
EEA−１：エチルアクリレート（EAという）
15wt％
M.I. 1.5
EEA−２： EA含量 15wt％
M.I. 0.5
又、Irganox1010はフエノール系酸化防止剤で
テトラキス−〔メチレン−３−（3′，5′−ジ−第３
−ブチル−4′−ヒドロキシフエニル）プロピオネ
ート〕メタンである。
実施例８〜10及び比較例３〜７
第３表に示す配合割合で各成分を用い、実施例
１と同様に処理して電線を製造した。また同様な
方法により各種物性を測定した。この結果を第４
表に示す。第４表中の合否判定は第２表の評価と
同じである。
但し第４表に於ける加工性は、次の方法に依つ
た。
第２表の加工性の測定方法に於いて、各組成物
を0.5mm2撚線鋼線上に0.2mm厚で線速200m／minの
高速押出被覆した際の押出外観を肉眼で観測した
ものである。
[Technical Field] The present invention relates to a resin composition, and more specifically to an ethylene-vinyl acetate copolymer (hereinafter referred to as EVA).
and at least one type of ethylene-ethyl acrylate copolymer (hereinafter referred to as EEA) and a resin component of linear polyethylene (hereinafter referred to as LPE), and two specific types of compounds and a specific flame retardant are blended. Regarding the composition. [Prior art] Ethylene polymers or ethylene-ethyl acrylate copolymers (EEA) have excellent electrical insulation properties, and can be used for various crosslinking methods such as radiation crosslinking, organic peroxide crosslinking, and silane crosslinking using silane compounds. It has been widely used in various fields including electrical insulation materials because it has the advantage of being able to crosslink by appropriately employing it and improve various physical properties. However, recently the technological level in various fields has improved,
In various fields such as electrical equipment, vehicles, and automobiles, insulated wires, especially electronic wires, are required to have more advanced characteristics, such as oil resistance, processability during insulated wire manufacturing, and flame retardancy. , high-temperature dielectric strength (cut through property), etc. have become more highly required. [Objective and summary of the invention] The present inventor has been researching EVA or EEA compositions for a long time, and has particularly developed EVA or EEA compositions with particularly excellent physical properties in accordance with recent technological advances.
We have continued our research to develop EEA compositions. In this research, when at least one of EVA and EEA and linear polyethylene (hereinafter referred to as LPE) were used in a specific amount, the oil resistance was
It has been found that the characteristics of EVA and/or EEA can be further improved while maintaining the characteristics as they are.
In addition, EVA and EEA will be introduced at the stage of further research.
In particular, when Sb 2 O 3 and a brominated or (and) chlorinated flame retardant are combined in a combined composition with at least one of I found out the truth. As a result of continuing research on the above-mentioned specific blended composition, the present inventor has discovered that when a specific compound called calcined finely powdered wet silica is further blended into this specific blended composition, each of the excellent properties of the above-mentioned specific blended composition, i.e. In addition to maintaining its oil resistance and heat deformation resistance, the flame retardance has been significantly improved. The inventors have found that the amount of water immersion is extremely small, so that the electrical properties of water immersion maintain their initial values, and that those with high purity have excellent heat aging resistance, and have now completed the present invention. That is, the present invention includes 100 parts by weight of ethylene-vinyl acetate copolymer or (and) ethylene-ethyl acrylate copolymer, 5 to 120 parts by weight of linear polyethylene, and 20 to 80 parts by weight of brominated or (and) chlorinated flame retardant. The present invention relates to a resin composition comprising 5 to 50 parts by weight of Sb 2 O 3 and 5 to 50 parts by weight of calcined finely powdered wet silica. [Effects of the Invention] In the present invention, a flame retardant obtained by adding Sb 2 O 3 and a bromine-based or (and) chlorine-based flame retardant to a resin composition consisting of at least one of EVA and EEA. By crosslinking this composition, the composition has the effect of significantly improving oil resistance, heat deformation resistance, and flame retardancy. By further blending fired finely powdered wet silica without impairing any of these properties, the flame retardance can be significantly improved. In addition, it has the effect that the electrical properties maintain their initial values (despite the use of wet silica) when submerged in water. [Structure of the Invention] The composition of the present invention basically comprises EVA and
100 parts by weight of at least one type of EEA, and LPE5~
It contains 120 parts by weight, preferably 20 to 80 parts by weight. The EVA used in the present invention has a vinyl acetate content of 20% by weight or less, preferably 15% by weight or less, and a melt index (hereinafter referred to as MI) of about 0.2 to 5. preferable. EEA also has an ethyl acrylate content of 20
The weight percent or less, MI is preferably 0.2 to 1.0. These etc.
EVA and EEA may be used alone or in combination, and the ratio when used in combination is EVA0.
It may be appropriately selected from a wide range of 100% to 100% by weight and 100% to 0% by weight EEA. In addition, it is preferable that the LPE has a low density, for example, a density of 0.91
~0.93 g/cm 3 can be exemplified as a preferable example. Another preferable example is a carbon number of 4.
I can list about 8 to 8. A fairly wide range of molecular weights can be used, and it is usually from 50,000 to 500,000, preferably from 80,000 to 200,000. Further, the LPE itself is not limited in any way to its production method, and any LPE produced by various production methods can be used as long as LPE that meets the purpose of the present invention can be obtained. The calcined fine powder wet silica used in the present invention is:
Wet silica produced by a conventional method is heated to a high temperature, usually 800℃.
By heat-treating at a high temperature above, the surface silanol groups are reduced, moisture movement is reduced, and the refractive index is increased.The ignition loss is 2.0%.
The following examples have a refractive index of 1.448 or more and an average particle size of 1 to 4 μm. Examples of this silica include Carplex CS5-7 manufactured by Shionogi & Co., Ltd. In the present invention, any conventionally used brominated flame retardant can be effectively used, and specific examples include decabromodiphenyl oxide (for example, Planelon DB from Mitsui Toatsu Fine Co., Ltd.). -100), poly(tribromo)styrene (Pyrocheck 68PB from Nissan Ferro Organic Chemical Co., Ltd.),
Ethylene glycol bis(pendabromophenyl) ether (Pyrocheck 77B, Nissan Ferro Organic Chemical Co., Ltd.), and bis(1,2,5,6-hexachlorodicyclopenteno)cyclooctane (Hooker) as a chlorine flame retardant. chemicals and
An example of this is Dechloran Plus 25) from Plastic Co. These flame retardants are EVA and EEA
It is used in an amount of 20 to 80 parts by weight, preferably 30 to 50 parts by weight per 100 parts by weight of at least one of the following. In addition, in the present invention, Sb 2 O 3 is EVA and EEA.
5 to 50 parts by weight, preferably 10 to 30 parts by weight per 100 parts by weight of at least one of the above, and 5 to 50 parts by weight, preferably 10 to 30 parts by weight of calcined fine powder wet silica per 100 parts by weight. It is blended. The composition of the present invention may further contain various other conventional additives, if necessary. Other additives in this case include, for example, other flame retardants, various anti-aging agents, inorganic fillers, etc., and crosslinking agents, crosslinking aids, etc. can also be used. [Example] The present invention will be described in more detail with reference to Examples below. However, in the following examples, "parts" means parts by weight. Examples 1 to 7 and Comparative Examples 1 to 2 Predetermined amounts of each component were mixed and sufficiently kneaded in the proportions shown in Table 1 to form compositions. An electric wire (conductor is a 0.813 mm diameter annealed copper single wire, insulation thickness 0.38 mm) was produced from this composition according to a conventional method, and crosslinked by irradiation with an electron beam dose of 30 Mrad. Various physical properties were measured. The results are shown in Table 2. However, the physical properties were measured by the following methods. <Oil resistance> After being immersed in ASTM No. 2 oil at 100℃ for 96 hours, it is left at room temperature, and it is considered to pass if the residual tensile strength is 50% or more of the initial strength and the residual elongation is 65% or more. <Flame retardance> According to UL1581, after applying a certain amount of flame from a burner at a certain slope to a horizontal electric wire for 15 seconds.
Remove the flame for 15 seconds and repeat this 5 times. The test is passed if a certain amount of electric wire does not burn out, or if ash does not fall and spread to the underlying cotton. <Workability> When the compound is coated on copper wire using a 30mmφ extruder, if the extruded surface appearance is smooth, the product is passed. <Heat deformation> The wire is passed if the deformation rate is 40% or less when a load of 250g is applied to the wire for 30 minutes at a temperature of 150℃. <Heat aging resistance> Aging at 136℃ for 7 days, tensile retention of 70% or more,
If the residual elongation rate is 65% or more and the residual breakdown voltage is 50% or more, it will be passed. <Electrical properties after immersion in water> After being immersed in water at room temperature for one day, it is considered good if the measured values of volume resistivity, dielectric constant, dielectric loss tangent, and breakdown voltage do not change significantly from the initial values. In particular, changes are roughly determined by the dielectric loss tangent. However, the various polymers used as polymers in Table 1 are shown below. LPE-1: Density 0.920 MI 1.0 Carbon number 8 LPE-2: Density 0.925 MI 4.0 Carbon water 4 EVA-1: Vinyl acetate (hereinafter referred to as EV) content 15wt% MI 0.5 EVA-2: EV content 10wt% MI 1.0 EEA- 1: Ethyl acrylate (referred to as EA) 15wt% MI 1.5 EEA-2: EA content 15wt% MI 0.5 In addition, Irganox 1010 is a phenolic antioxidant.
-butyl-4'-hydroxyphenyl)propionate]methane. Examples 8 to 10 and Comparative Examples 3 to 7 Electric wires were manufactured in the same manner as in Example 1 using each component in the mixing ratios shown in Table 3. Various physical properties were also measured using similar methods. This result is the fourth
Shown in the table. The pass/fail judgment in Table 4 is the same as the evaluation in Table 2. However, the workability in Table 4 was determined by the following method. In the processability measurement method shown in Table 2, the extrusion appearance was observed with the naked eye when each composition was coated on a 0.5 mm 2- strand steel wire by high-speed extrusion at a wire speed of 200 m/min at a thickness of 0.2 mm. be.
【表】【table】
【表】【table】
【表】【table】
【表】【table】
Claims (1)
エチレン−エチルアクリレート共重合体100重量
部、直鎖状ポリエチレン５〜120重量部、臭素系
又は（及び）塩素系難燃剤20〜80重量部、Sb2O3
５〜50重量部及び焼成微粉末湿式シリカ５〜50
重量部を含有して成る樹脂組成物。1 Ethylene-vinyl acetate copolymer or (and)
100 parts by weight of ethylene-ethyl acrylate copolymer, 5 to 120 parts by weight of linear polyethylene, 20 to 80 parts by weight of brominated or (and) chlorinated flame retardant, Sb 2 O 3
5-50 parts by weight and 5-50 parts of calcined fine powder wet silica
A resin composition comprising parts by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6797885A JPS61228050A (en) | 1985-03-30 | 1985-03-30 | Resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6797885A JPS61228050A (en) | 1985-03-30 | 1985-03-30 | Resin composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61228050A JPS61228050A (en) | 1986-10-11 |
| JPH0463904B2 true JPH0463904B2 (en) | 1992-10-13 |
Family
ID=13360585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6797885A Granted JPS61228050A (en) | 1985-03-30 | 1985-03-30 | Resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61228050A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61228049A (en) * | 1985-03-30 | 1986-10-11 | Mitsubishi Cable Ind Ltd | Resin composition |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56116734A (en) * | 1980-02-19 | 1981-09-12 | Fujikura Ltd | Flame-retardant composition |
| JPS5851415A (en) * | 1981-09-22 | 1983-03-26 | 日立電線株式会社 | Flame resistant insulated wire |
| JPS61228049A (en) * | 1985-03-30 | 1986-10-11 | Mitsubishi Cable Ind Ltd | Resin composition |
-
1985
- 1985-03-30 JP JP6797885A patent/JPS61228050A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56116734A (en) * | 1980-02-19 | 1981-09-12 | Fujikura Ltd | Flame-retardant composition |
| JPS5851415A (en) * | 1981-09-22 | 1983-03-26 | 日立電線株式会社 | Flame resistant insulated wire |
| JPS61228049A (en) * | 1985-03-30 | 1986-10-11 | Mitsubishi Cable Ind Ltd | Resin composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61228050A (en) | 1986-10-11 |
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