JPH0456406B2 - - Google Patents
Info
- Publication number
- JPH0456406B2 JPH0456406B2 JP60241565A JP24156585A JPH0456406B2 JP H0456406 B2 JPH0456406 B2 JP H0456406B2 JP 60241565 A JP60241565 A JP 60241565A JP 24156585 A JP24156585 A JP 24156585A JP H0456406 B2 JPH0456406 B2 JP H0456406B2
- Authority
- JP
- Japan
- Prior art keywords
- vinyl chloride
- chloride resin
- flame
- resin composition
- coated
- 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
Links
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims description 33
- -1 polyethylene Polymers 0.000 claims description 19
- 229920005989 resin Polymers 0.000 claims description 19
- 239000011347 resin Substances 0.000 claims description 19
- 239000011342 resin composition Substances 0.000 claims description 17
- 239000003063 flame retardant Substances 0.000 claims description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- 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 14
- 239000004698 Polyethylene Substances 0.000 claims description 12
- 229920000573 polyethylene Polymers 0.000 claims description 12
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- FDNAPBUWERUEDA-UHFFFAOYSA-N silicon tetrachloride Chemical compound Cl[Si](Cl)(Cl)Cl FDNAPBUWERUEDA-UHFFFAOYSA-N 0.000 claims 1
- 239000004014 plasticizer Substances 0.000 description 7
- ARCGXLSVLAOJQL-UHFFFAOYSA-N trimellitic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C(C(O)=O)=C1 ARCGXLSVLAOJQL-UHFFFAOYSA-N 0.000 description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 4
- VXEGSRKPIUDPQT-UHFFFAOYSA-N 4-[4-(4-methoxyphenyl)piperazin-1-yl]aniline Chemical compound C1=CC(OC)=CC=C1N1CCN(C=2C=CC(N)=CC=2)CC1 VXEGSRKPIUDPQT-UHFFFAOYSA-N 0.000 description 3
- 229910002012 Aerosil® Inorganic materials 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000010452 phosphate Substances 0.000 description 3
- 239000005049 silicon tetrachloride Substances 0.000 description 3
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Chemical compound CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 2
- XBJJRSFLZVLCSE-UHFFFAOYSA-N barium(2+);diborate Chemical compound [Ba+2].[Ba+2].[Ba+2].[O-]B([O-])[O-].[O-]B([O-])[O-] XBJJRSFLZVLCSE-UHFFFAOYSA-N 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 150000002896 organic halogen compounds Chemical class 0.000 description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 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 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 description 2
- 229910002020 Aerosil® OX 50 Inorganic materials 0.000 description 1
- 239000004709 Chlorinated polyethylene Substances 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004803 Di-2ethylhexylphthalate Substances 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 1
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 1
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical class C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 150000008360 acrylonitriles Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- AGXUVMPSUKZYDT-UHFFFAOYSA-L barium(2+);octadecanoate Chemical compound [Ba+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O AGXUVMPSUKZYDT-UHFFFAOYSA-L 0.000 description 1
- SAOKZLXYCUGLFA-UHFFFAOYSA-N bis(2-ethylhexyl) adipate Chemical compound CCCCC(CC)COC(=O)CCCCC(=O)OCC(CC)CCCC SAOKZLXYCUGLFA-UHFFFAOYSA-N 0.000 description 1
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- UQLDLKMNUJERMK-UHFFFAOYSA-L di(octadecanoyloxy)lead Chemical compound [Pb+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O UQLDLKMNUJERMK-UHFFFAOYSA-L 0.000 description 1
- HCQHIEGYGGJLJU-UHFFFAOYSA-N didecyl hexanedioate Chemical compound CCCCCCCCCCOC(=O)CCCCC(=O)OCCCCCCCCCC HCQHIEGYGGJLJU-UHFFFAOYSA-N 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- VJHINFRRDQUWOJ-UHFFFAOYSA-N dioctyl sebacate Chemical compound CCCCC(CC)COC(=O)CCCCCCCCC(=O)OCC(CC)CCCC VJHINFRRDQUWOJ-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000007706 flame test Methods 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- OCWMFVJKFWXKNZ-UHFFFAOYSA-L lead(2+);oxygen(2-);sulfate Chemical compound [O-2].[O-2].[O-2].[Pb+2].[Pb+2].[Pb+2].[Pb+2].[O-]S([O-])(=O)=O OCWMFVJKFWXKNZ-UHFFFAOYSA-L 0.000 description 1
- YJOMWQQKPKLUBO-UHFFFAOYSA-L lead(2+);phthalate Chemical compound [Pb+2].[O-]C(=O)C1=CC=CC=C1C([O-])=O YJOMWQQKPKLUBO-UHFFFAOYSA-L 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 description 1
- JQCXWCOOWVGKMT-UHFFFAOYSA-N phthalic acid diheptyl ester Natural products CCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCC JQCXWCOOWVGKMT-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- QRCJOCOSPZMDJY-UHFFFAOYSA-N valnoctamide Chemical compound CCC(C)C(CC)C(N)=O QRCJOCOSPZMDJY-UHFFFAOYSA-N 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Landscapes
- Insulated Conductors (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
Description
（産業上の利用分野）
この発明は難燃性樹脂被覆電線、一層詳しくは
芯線をポリエチレンで被覆絶縁し、更にその上を
塩化ビニル系樹脂組成物で被覆してなる難燃性樹
脂被覆電線に係わるものである。
（従来の技術及び発明が解決しようとする問題
点）
電気部品として用いられる高圧回路コード、同
軸コード等は、芯線のまわりに絶縁体としてポリ
エチレンを使用し、更にその外側を軟質塩化ビニ
ル樹脂組成物で被覆したものが通常使用される
が、このような電線に対しては高度の難燃性が要
求される。例えばこのような電線を使用したテレ
ビジヨンその他の電化製品を輸出しようとする場
合、各国とも火災防止を目的とした難燃性に関す
る規定を設けており、かゝる規定に適合しない部
品を使用した製品をその国に輸出することは実質
上、不可能といえる。
アメリカ合衆国のUL規格（Underwriters
Laboratries Inc.規格）の電気用品取締規則では
被覆電線の難燃性の評価法につき厳しい規格が設
けられており、軟質化塩化ビニル樹脂組成物をポ
リエチレン絶縁電線に被覆したものについては、
UL規格の項目758に規定された垂直フレームテス
トに合格するように検討がなされてきた。
塩化ビニル樹脂に難燃性を付与するため、三酸
化アンチモン、硼酸亜鉛、硼酸バリウム、酸化亜
鉛、水酸化アルミニウム、酸化ジルコニウム、有
機ハロゲン化合物等の難燃剤を配合することが知
られている。しかしながらこのような難燃剤で難
燃化した塩化ビニル樹脂組成物でもつて、ポリエ
チレン被覆電線を更に被覆したものは、塩化ビニ
ル樹脂の燃焼抑制には有効であるが、２〜４回ガ
スバーナー炎中にさらすとき、塩化ビニル樹脂が
炭化し、所々に亀裂が生じ、ポリエチレンがにじ
み出し、内部のポリエチレン層に着火して燃焼を
起す。即ち上記の規格には合格しない結果とな
る。
（問題点を解決するための手段）
本発明は、このような不都合が生じない、即ち
UL規格の項目758に規定される垂直フレームテス
トを実施するとき、外層の塩化ビニル樹脂が炭化
し、所々に亀裂が生じ内部のポリエチレン層に着
火し、燃焼を起すことのない、難燃性樹脂被覆電
線を提供することを目的とするものである。
しかして上記の目的は本発明に従い、芯線のま
わりがポリエチレンで被覆され、更にそのまわり
が塩化ビニル系樹脂組成物で被覆されてなる電線
において、上記塩化ビニル系樹脂組成物が、塩化
ビニル樹脂の難燃剤及び四塩化珪素の燃焼によつ
て生成された微粒子状の合成シリカを配合してな
るものであることによつて達成される。
本発明で用いられる塩化ビニル系樹脂組成物の
主体となる塩化ビニル系樹脂は、塩化ビニル又は
塩化ビニルとそれに共重合可能なコモノマーとの
混合物を、各種重合法によつて重合して得られる
ものであり、その平均重合度は通常600〜4000の
範囲のもの、好ましくは平均重合度1000〜4000の
範囲のものである。塩化ビニルと共重合可能なコ
モノマーとしては、ビニルエステル類、アクリル
酸エステル類、メタクリル酸エステル類、マレイ
ン酸エステル類、フマール酸エステル類、ビニル
エーテル類、シアン化ビニル類、α−オレフイン
類、塩化ビニル以外のハロゲン化ビニル、ハロゲ
ン化ビニリデン類などが挙げられ、これらコモノ
マーは塩化ビニル系樹脂構成成分中、30重量％以
下、好ましくは20重量％以下の範囲で用いられ
る。
本発明における塩化ビニル系樹脂組成物には可
塑剤が配合され、この可塑剤としてはフタル酸ジ
−ｎ−オクチル、フタル酸ジ−２−エチルヘキシ
ルのようなフタル酸系可塑剤、トリメリツト酸ト
リ−２−エチルヘキシル、トリメリツト酸トリ−
ｎ−オクチル等のようなトリメリツト酸系可塑
剤、アジピン酸ジ−２−エチルヘキシル、アジピ
ン酸ジ−ｎ−デシル、アゼライン酸ジ−２−エチ
ルヘキシル、セバシン酸ジ−２−エチルヘキシル
等の脂肪酸エステル系可塑剤、リン酸トリ−２−
エチルヘキシル、リン酸トリクレジル等のリン酸
エステル系可塑剤、エポキシ化大豆油等のエポキ
シ系可塑剤が挙げられ、これらは１種又は２種以
上混合して用いられる。
塩化ビニル系樹脂組成物には、この樹脂と相溶
性の良好な熱可塑性エラストマー、例えばニトリ
ルブタジエン、熱可塑性ポリウレタン、塩素化ポ
リエチレン等を、塩化ビニル系樹脂の特性を失な
わせない範囲の量で混合してもよい。
そのほか、塩化ビニル系樹脂組成物には、通常
添加される配合剤、即ち安定剤、滑剤、酸化防止
剤、紫外線吸収剤、着色剤、例えば三塩基性硫酸
鉛、二塩基性亜リン酸鉛、二塩基性フタル酸鉛、
ステアリン酸鉛、ステアリン酸バリウム、ステア
リン酸カルシウムなどが適宜加えられる。
更に本発明の塩化ビニル系樹脂組成物にはこれ
を難燃性にするために難燃剤が配合される。この
難燃剤としては塩化ビニル樹脂用の難燃剤として
従来知られているものが使用できる。例えば三酸
化アンチモン、酸化亜鉛、硼酸バリウム、硼酸亜
鉛、水酸化アルミニウム、酸化ジルコニウム、有
機ハロゲン化物、等が挙げられる。難燃剤は塩化
ビニル系樹脂100重量部に対し通常２〜100重量部
の範囲で用いられる。
本発明において塩化ビニル系樹脂組成物に配合
される重要な成分である合成シリカは四塩化珪素
の燃焼によつて生成された、特に四塩化珪素の酸
水素焔中における加水分解によつて得られる無定
形シリカであつて、一次粒子が５ｍμ以上、好ま
しくは20ｍμ以上の微粒子状のものが用いられ
る。このような合成シリカとして日本アエロジル
（株）からアエロジルの登録商標名で販売されて
いるものが好ましい。かゝる合成シリカは本発明
において、塩化ビニル系樹脂100重量部に対し、
１〜50重量部、好ましくは２〜20重量部の範囲内
で配合される。
本発明の電線は、従来知られている、芯線をポ
リエチレンで被覆し、更にその上を塩化ビニル樹
脂で被覆する電線の製造法に従つて製造すること
ができる。
次に本発明の実施例及び比較例を説明するが、
本発明は、これら実施例に制限されるものではな
い。
実施例１〜２及び比較例１〜５
下記第１表に示す実施例１〜２及び比較例１〜
５の塩化ビニル樹脂組成物を調製し、それぞれの
樹脂組成物の物性を測定した。表中、引張り強
さ、伸び、100％モジユラスはJIS−Ｋ−6723に準
じて測定した。
難燃性の試験はポリエチレン絶縁シース材に関
するUL規格、項目758のVW−１試験に準じて測
定し、その判定結果を第１表に示す。難燃性は直
径0.5mmの銅線の上に、直径3.0mmとなるようポリ
エチレンを被覆し、更にその上に直径5.0mmとな
るように下記第１表の塩化ビニル樹脂組成物を被
覆したものを調製し、これに関して試験した。
なお、下記第１表の樹脂組成物中の本発明の合
成シリカは、日本アエロジル（株）販売のアエロ
ジルOX50である。また表中、有機ハロゲン化合
物は、ハロゲン化アルキルホスフエートとトリス
ジブロモプロピルイソシアヌル酸との混合物から
なるものである。
(Industrial Application Field) This invention relates to a flame-retardant resin-coated electric wire, more specifically, a flame-retardant resin-coated electric wire having a core wire coated and insulated with polyethylene, and further coated with a vinyl chloride resin composition. It is related. (Prior art and problems to be solved by the invention) High-voltage circuit cords, coaxial cords, etc. used as electrical components use polyethylene as an insulator around the core wire, and the outside is made of a soft vinyl chloride resin composition. These wires are usually coated with a high flame retardant coating. For example, when exporting televisions and other electrical appliances that use such electric wires, each country has regulations regarding flame retardancy for the purpose of fire prevention, and if parts that do not comply with such regulations are used, It is virtually impossible to export products to that country. United States UL standard (Underwriters
Laboratries Inc.'s Electrical Appliance and Appliance Control Regulations have strict standards for evaluating the flame retardancy of coated wires.
Considerations have been made to pass the vertical frame test specified in Item 758 of the UL standard. In order to impart flame retardancy to vinyl chloride resin, it is known to blend flame retardants such as antimony trioxide, zinc borate, barium borate, zinc oxide, aluminum hydroxide, zirconium oxide, and organic halogen compounds. However, even with such a vinyl chloride resin composition made flame retardant with a flame retardant, a polyethylene-coated electric wire further coated is effective in suppressing the combustion of the vinyl chloride resin, but it cannot be used in a gas burner flame for 2 to 4 times. When exposed to water, the vinyl chloride resin carbonizes, cracks appear in places, and polyethylene oozes out, igniting the inner polyethylene layer and causing combustion. In other words, the result is that it does not pass the above standards. (Means for solving the problems) The present invention does not cause such inconveniences, that is,
When performing the vertical flame test specified in Item 758 of the UL standard, the outer layer of vinyl chloride resin carbonizes, cracks occur in places, and the inner polyethylene layer ignites, making it a flame-retardant resin that does not cause combustion. The purpose is to provide covered electric wires. According to the present invention, the above object is achieved by providing an electric wire in which the core wire is coated with polyethylene and the circumference thereof is further coated with a vinyl chloride resin composition. This is achieved by blending a flame retardant and fine particulate synthetic silica produced by combustion of silicon tetrachloride. The vinyl chloride resin that is the main component of the vinyl chloride resin composition used in the present invention is obtained by polymerizing vinyl chloride or a mixture of vinyl chloride and a comonomer copolymerizable therewith using various polymerization methods. The average degree of polymerization is usually in the range of 600 to 4,000, preferably in the range of 1,000 to 4,000. Comonomers that can be copolymerized with vinyl chloride include vinyl esters, acrylic esters, methacrylic esters, maleic esters, fumaric esters, vinyl ethers, vinyl cyanides, α-olefins, and vinyl chloride. These comonomers are used in an amount of 30% by weight or less, preferably 20% by weight or less in the constituent components of the vinyl chloride resin. A plasticizer is blended into the vinyl chloride resin composition of the present invention, and examples of the plasticizer include phthalic acid plasticizers such as di-n-octyl phthalate and di-2-ethylhexyl phthalate, and trimellitic acid. 2-ethylhexyl, trimellitic acid
Trimellitic acid plasticizers such as n-octyl, fatty acid ester plasticizers such as di-2-ethylhexyl adipate, di-n-decyl adipate, di-2-ethylhexyl azelaate, and di-2-ethylhexyl sebacate. agent, tri-2-phosphate
Examples include phosphate ester plasticizers such as ethylhexyl and tricresyl phosphate, and epoxy plasticizers such as epoxidized soybean oil, and these may be used alone or in combination of two or more. A thermoplastic elastomer having good compatibility with the resin, such as nitrile butadiene, thermoplastic polyurethane, chlorinated polyethylene, etc., is added to the vinyl chloride resin composition in an amount within a range that does not cause the properties of the vinyl chloride resin to be lost. May be mixed. In addition, the vinyl chloride resin compositions also contain additives that are usually added, such as stabilizers, lubricants, antioxidants, ultraviolet absorbers, colorants such as tribasic lead sulfate, dibasic lead phosphite, dibasic lead phthalate,
Lead stearate, barium stearate, calcium stearate, etc. are added as appropriate. Further, a flame retardant is added to the vinyl chloride resin composition of the present invention to make it flame retardant. As this flame retardant, those conventionally known as flame retardants for vinyl chloride resins can be used. Examples include antimony trioxide, zinc oxide, barium borate, zinc borate, aluminum hydroxide, zirconium oxide, organic halides, and the like. The flame retardant is usually used in an amount of 2 to 100 parts by weight per 100 parts by weight of the vinyl chloride resin. Synthetic silica, which is an important component blended into the vinyl chloride resin composition in the present invention, is produced by combustion of silicon tetrachloride, particularly obtained by hydrolysis of silicon tetrachloride in an oxyhydrogen flame. Amorphous silica in the form of fine particles with primary particles of 5 mμ or more, preferably 20 mμ or more is used. As such synthetic silica, one sold under the registered trademark of Aerosil by Nippon Aerosil Co., Ltd. is preferred. In the present invention, such synthetic silica is used in an amount of 100 parts by weight of vinyl chloride resin.
It is blended in an amount of 1 to 50 parts by weight, preferably 2 to 20 parts by weight. The electric wire of the present invention can be manufactured in accordance with a conventionally known electric wire manufacturing method in which a core wire is coated with polyethylene and further coated with vinyl chloride resin. Next, examples and comparative examples of the present invention will be explained.
The present invention is not limited to these examples. Examples 1-2 and Comparative Examples 1-5 Examples 1-2 and Comparative Examples 1-5 shown in Table 1 below
Vinyl chloride resin compositions No. 5 were prepared, and the physical properties of each resin composition were measured. In the table, tensile strength, elongation, and 100% modulus were measured according to JIS-K-6723. The flame retardancy test was conducted in accordance with the VW-1 test in item 758 of the UL standard for polyethylene insulation sheathing materials, and the results are shown in Table 1. Flame retardancy is obtained by coating a copper wire with a diameter of 0.5 mm with polyethylene to a diameter of 3.0 mm, and then coating it with the vinyl chloride resin composition shown in Table 1 below to a diameter of 5.0 mm. was prepared and tested in this regard. The synthetic silica of the present invention in the resin composition shown in Table 1 below is Aerosil OX50 sold by Nippon Aerosil Co., Ltd. In the table, the organic halogen compound is a mixture of a halogenated alkyl phosphate and tris-dibromopropylisocyanuric acid.
【表】
（発明の効果）
本発明の被覆電線は、UL規格の項目758のテス
トに合格するものである。即ち従来の難燃性にし
た電線に見られるような接炎によつて、外層の塩
化ビニル樹脂が炭化して亀裂を生じ、内部のポリ
エチレン層に着火して燃焼を続けることはない。
このように難燃性にすぐれているほか、本発明の
電線は絶縁性の低下もない。[Table] (Effects of the Invention) The covered wire of the present invention passes the test of item 758 of the UL standard. That is, the vinyl chloride resin in the outer layer will not carbonize and crack, and the inner polyethylene layer will not ignite and continue to burn due to contact with flame, which occurs with conventional flame-retardant electric wires.
In addition to having such excellent flame retardancy, the electric wire of the present invention does not exhibit any deterioration in insulation properties.
Claims (1)
にそのまわりが塩化ビニル系樹脂組成物で被覆さ
れてなる電線において、上記塩化ビニル系樹脂組
成物は塩化ビニル系樹脂に、塩化ビニル樹脂の難
燃剤及び四塩化珪素の燃焼によつて生成された微
粒子状の合成シリカが配合されたものである難燃
性樹脂被覆電線。1. In an electric wire in which the core wire is coated with polyethylene and the circumference thereof is further coated with a vinyl chloride resin composition, the vinyl chloride resin composition is a vinyl chloride resin, a vinyl chloride resin flame retardant, and a vinyl chloride resin composition. A flame-retardant resin-coated electric wire containing fine particulate synthetic silica produced by combustion of silicon chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60241565A JPS62103910A (en) | 1985-10-30 | 1985-10-30 | Flame retardant resin insulated wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60241565A JPS62103910A (en) | 1985-10-30 | 1985-10-30 | Flame retardant resin insulated wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62103910A JPS62103910A (en) | 1987-05-14 |
| JPH0456406B2 true JPH0456406B2 (en) | 1992-09-08 |
Family
ID=17076227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60241565A Granted JPS62103910A (en) | 1985-10-30 | 1985-10-30 | Flame retardant resin insulated wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62103910A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03126309U (en) * | 1990-04-04 | 1991-12-19 | ||
| JP5784982B2 (en) * | 2011-05-25 | 2015-09-24 | 矢崎エナジーシステム株式会社 | Vinyl chloride resin composition for electric wire coating and electric wire using the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5521864A (en) * | 1978-08-03 | 1980-02-16 | Fujikura Ltd | Fire resisting wire |
-
1985
- 1985-10-30 JP JP60241565A patent/JPS62103910A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5521864A (en) * | 1978-08-03 | 1980-02-16 | Fujikura Ltd | Fire resisting wire |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62103910A (en) | 1987-05-14 |
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