JPS63124311A - Manufacture of flame resisting foam polyolefine insulated wire - Google Patents
Manufacture of flame resisting foam polyolefine insulated wireInfo
- Publication number
- JPS63124311A JPS63124311A JP26916686A JP26916686A JPS63124311A JP S63124311 A JPS63124311 A JP S63124311A JP 26916686 A JP26916686 A JP 26916686A JP 26916686 A JP26916686 A JP 26916686A JP S63124311 A JPS63124311 A JP S63124311A
- Authority
- JP
- Japan
- Prior art keywords
- insulated wire
- manufacturing
- flame
- crosslinking
- wire according
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 239000006260 foam Substances 0.000 title claims description 9
- 229920000098 polyolefin Polymers 0.000 title claims description 8
- 238000000034 method Methods 0.000 claims description 24
- 239000003063 flame retardant Substances 0.000 claims description 21
- 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 18
- 238000004132 cross linking Methods 0.000 claims description 12
- 229920005672 polyolefin resin Polymers 0.000 claims description 12
- 238000005187 foaming Methods 0.000 claims description 8
- 239000004020 conductor Substances 0.000 claims description 5
- 229910044991 metal oxide Inorganic materials 0.000 claims description 5
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 4
- 150000004706 metal oxides Chemical class 0.000 claims description 4
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 3
- 239000008199 coating composition Substances 0.000 claims description 3
- 238000007765 extrusion coating Methods 0.000 claims description 3
- 239000000347 magnesium hydroxide Substances 0.000 claims description 3
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 3
- 239000002905 metal composite material Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000003431 cross linking reagent Substances 0.000 claims description 2
- 230000005855 radiation Effects 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 description 5
- 239000002341 toxic gas Substances 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 239000005038 ethylene vinyl acetate Substances 0.000 description 4
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 4
- 239000011342 resin composition Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000010292 electrical insulation Methods 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
- 150000004677 hydrates Chemical class 0.000 description 3
- 231100001231 less toxic Toxicity 0.000 description 3
- 229920001684 low density polyethylene Polymers 0.000 description 3
- 239000004702 low-density polyethylene Substances 0.000 description 3
- -1 metal oxide hydrates Chemical class 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910052787 antimony Inorganic materials 0.000 description 2
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- NBOCQTNZUPTTEI-UHFFFAOYSA-N 4-[4-(hydrazinesulfonyl)phenoxy]benzenesulfonohydrazide Chemical compound C1=CC(S(=O)(=O)NN)=CC=C1OC1=CC=C(S(=O)(=O)NN)C=C1 NBOCQTNZUPTTEI-UHFFFAOYSA-N 0.000 description 1
- 239000004156 Azodicarbonamide Substances 0.000 description 1
- 239000004604 Blowing Agent Substances 0.000 description 1
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229940058905 antimony compound for treatment of leishmaniasis and trypanosomiasis Drugs 0.000 description 1
- 150000001463 antimony compounds Chemical class 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical compound NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 description 1
- 235000019399 azodicarbonamide Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920005648 ethylene methacrylic acid copolymer Polymers 0.000 description 1
- 229920006226 ethylene-acrylic acid Polymers 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 150000002366 halogen compounds Chemical class 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001179 medium density polyethylene Polymers 0.000 description 1
- 239000004701 medium-density polyethylene Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000003348 petrochemical agent Substances 0.000 description 1
- 150000003018 phosphorus compounds Chemical class 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 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
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 231100000701 toxic element Toxicity 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Landscapes
- Processes Specially Adapted For Manufacturing Cables (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】
〔産業上の利用分野〕
本発明は、発泡ポリオレフィン絶縁被覆電線の製造方法
に関し、その目的とする所は、特に燃焼時の発生有毒ガ
スが少なくしかも電気絶縁性並びに耐熱性に優れた難燃
絶縁電線を提供することである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for manufacturing a foamed polyolefin insulated electric wire, and its purpose is to achieve a method that produces less toxic gas during combustion, and has good electrical insulation and heat resistance. An object of the present invention is to provide a flame-retardant insulated wire with excellent properties.
従来行われている難燃性発泡ポリオレフィン電線の製造
方法としては、アンチモン化合物、ハロゲン化合物、リ
ン化合物等の難燃剤を多量配合した樹脂組成物を導体上
に被覆した後、樹脂を発泡させる方法が知られている。The conventional method for manufacturing flame-retardant foamed polyolefin electric wires is to coat a conductor with a resin composition containing a large amount of flame retardants such as antimony compounds, halogen compounds, and phosphorus compounds, and then foam the resin. Are known.
しかしながら、この方法に於いては使用する難燃剤が有
毒元素を含んでおり、且つ多量使用する必要があること
から、得られた発泡体は燃焼時に有毒なガスを多量に発
生すると言う欠点を有する。However, this method has the drawback that the flame retardant used contains toxic elements and must be used in large quantities, resulting in the resulting foam generating a large amount of toxic gas when burned. .
更に又熱可塑性絶縁体であることがら熱変形に対して弱
く、耐熱性に劣ると言う欠点を有する。Furthermore, since it is a thermoplastic insulator, it is susceptible to thermal deformation and has the disadvantage of poor heat resistance.
本発明が解決しようとする問題点は、従来の難燃性発泡
ポリオレフィン被覆電線の製造法に於ける上記難点を解
消することであり、更に詳しくは燃焼時の発生有毒ガス
が少なく、且つ電気絶縁性、耐熱性に優れた難燃性発泡
ポリオレフィン被覆電線を製造し得る新しい方法を開発
することである。The problem to be solved by the present invention is to solve the above-mentioned difficulties in the conventional manufacturing method of flame-retardant foamed polyolefin-coated electric wire, and more specifically, to solve the problems that generate less toxic gas during combustion and to achieve electrical insulation. The purpose of the present invention is to develop a new method for producing flame-retardant foamed polyolefin-coated wires with excellent properties and heat resistance.
本発明者らは、このような問題点を解決すべく鋭意研究
を重ねた結果、特別の難燃剤を配合したポリオレフィン
樹脂組成物を導体上に発泡押出被覆後、比較的低温条件
下で架橋することより、燃焼時の発生有毒ガスが少なく
、また電気絶縁性、耐熱性に優れた難燃性発泡ポリオレ
フィン絶縁電線が得られることを発見した。As a result of extensive research to solve these problems, the present inventors have developed a method of foaming and extruding coating a conductor with a polyolefin resin composition containing a special flame retardant, and then crosslinking it under relatively low temperature conditions. As a result, it was discovered that a flame-retardant foamed polyolefin insulated wire that generates less toxic gas during combustion and has excellent electrical insulation and heat resistance can be obtained.
即ち本発明は、ポリオレフィン系樹脂、金属酸化物又は
（及び）金属複合酸化物の水和物から成る難燃剤及び架
橋剤から成る発泡性被覆組成物を電線用導体表面に発泡
押出被覆し、然る後低温下で架橋することを特徴とする
難燃性発泡ポリオレフィン絶縁電線の製造方法に係るも
のである。That is, the present invention involves foaming and extrusion coating the surface of an electric wire conductor with a foamable coating composition comprising a flame retardant and a crosslinking agent comprising a polyolefin resin, a metal oxide or (and) a hydrate of a metal composite oxide, and The present invention relates to a method for producing a flame-retardant foamed polyolefin insulated wire, which is characterized in that the wire is crosslinked at a low temperature after being cured.
本発明に於いて使用する難燃剤は金属酸化物の水和物又
は（及び）金属複合酸化物の水和物の少な（とも１種で
ある。この難燃剤はポリオレフィン系樹脂に対し優れた
混和性乃至混練性を有し、また発泡体に対して優れた難
燃性を賦与することが出来る。また従来のアンチモン系
化合物、ハロゲン系化合物あるいはリン系化合物の如く
燃焼時に有毒ガス発生することが全く無い。The flame retardant used in the present invention is at least one of metal oxide hydrates and/or metal composite oxide hydrates.This flame retardant has excellent miscibility with polyolefin resins. It also has excellent flame retardancy for foams.Also, unlike conventional antimony-based compounds, halogen-based compounds, or phosphorus-based compounds, it does not generate toxic gas when burned. Not at all.
而して金属酸化物としては、各種の金属たとえばＡｔ、
Ｍｇ、 Ｃａ、 Ｂａ、等の酸化物が包含されるが、
特に好ましくはアルミニウムとマグネシウムの酸化物で
あり、これ等酸化物の水和物が好ましく使用される。ま
た金属酸化物の複合体たとえばＳｉＯ□・Ａ１□０３系
やＭｇＯ・ＳｉＯ□系の複合酸化物の水和物も有効に使
用される。As the metal oxide, various metals such as At,
Includes oxides such as Mg, Ca, Ba, etc.
Particularly preferred are oxides of aluminum and magnesium, and hydrates of these oxides are preferably used. Further, metal oxide complexes such as SiO□.A1□03-based and MgO.SiO□-based complex oxide hydrates are also effectively used.
更に詳しく説明すると、たとえば水酸化アルミニウム、
水酸化マグネシウムとしては、通常市販されているもの
をそのまま用いることが出来、たとえば水酸化アルミニ
ウムとしてハイシライトＨ−１０（昭和電工製）、水酸
化マグネシウムとしてキスマ５Ｂ（協和化学製）などを
使用することが出来る。使用量としてはポリオレフィン
樹脂１００重量部に対して５０〜２００重量部、好まし
くは８０〜１５０重量部であり、５０重量部未満では所
望の難燃性を得ることは難しく、又２００重量部より多
量では発泡体の機械強度が著しく損なわれる。To explain in more detail, for example, aluminum hydroxide,
As magnesium hydroxide, commercially available products can be used as they are; for example, as aluminum hydroxide, Hisilite H-10 (manufactured by Showa Denko), and as magnesium hydroxide, Kisuma 5B (manufactured by Kyowa Chemical Co., Ltd.) can be used. I can do it. The amount to be used is 50 to 200 parts by weight, preferably 80 to 150 parts by weight, per 100 parts by weight of the polyolefin resin; if it is less than 50 parts by weight, it is difficult to obtain the desired flame retardancy, and if it is more than 200 parts by weight. In this case, the mechanical strength of the foam is significantly impaired.
本発明に於いて使用されるポリオレフィン樹脂としては
従来からこの分野に於いて使用されて来たものがいずれ
も使用出来、オレフィンの単独重合体ばかりでなく他の
千ツマ−との共重合体も包含される。具体例としては、
たとえば低密度ポリ−な
エチレン、中密度ポリエチレン、高密度ポリエチレン、
直鎖状低密度ポリエチレン、エチレン−酢酸ビニル共重
合体、エチレン−アクリル酸エステル共重合体、エチレ
ン−メタクリル酸共重体、ポリプロピレン等で、必要に
応じてそれらをブレンドして使用しても良い。As the polyolefin resin used in the present invention, any of those conventionally used in this field can be used, including not only olefin homopolymers but also copolymers with other polymers. Included. As a specific example,
For example, low density polyethylene, medium density polyethylene, high density polyethylene,
Linear low density polyethylene, ethylene-vinyl acetate copolymer, ethylene-acrylic acid ester copolymer, ethylene-methacrylic acid copolymer, polypropylene, etc. may be used by blending them as necessary.
また本発明に於いて使用される発泡剤としても従来から
この分野で使用されて来たものがいずれも使用出来、た
とえばｐ、ｐ’−オキシビス（ベンゼンスルホニルヒド
ラジド）、アゾジカルボンアミド等を使用することが出
来る。その使用量は、ポリオレフィン系樹脂１００重量
部に対して０．３〜３．０重量部、好ましくは０．５〜
２．０重量部であり０，３重量部未満では所望の発泡度
を得ることが出来ず、また３、０重量部より多量では逆
に発生ガスのために発泡構造及び外観が著しく損なわれ
る。Further, as the blowing agent used in the present invention, any of those conventionally used in this field can be used, such as p, p'-oxybis (benzenesulfonyl hydrazide), azodicarbonamide, etc. I can do it. The amount used is 0.3 to 3.0 parts by weight, preferably 0.5 to 3.0 parts by weight, per 100 parts by weight of the polyolefin resin.
If the amount is 2.0 parts by weight and less than 0.3 parts by weight, the desired foaming degree cannot be obtained, and if the amount is more than 3.0 parts by weight, the foamed structure and appearance will be significantly impaired due to the generated gas.
本発明法により電線を製造するに際しては、先ずポリオ
レフィン樹脂、上記難燃剤及び発泡剤を所定量配合し、
混合乃至混練して被覆用樹脂組成□−階隅■―−一−−
物を調製する。この際その他の従来から使用されて来た
各種の添加剤を必要に応じ配合することが出来る。たと
えばタルク、シリカ等の充填剤、酸化防止剤、銅害防止
剤、着色剤を添加してもよく、また難燃剤のポリオレフ
ィン系樹脂中での分散性を向上させるためのシラン、チ
タン等のカップリング剤で処理された難燃剤を使用して
も良い。When manufacturing electric wires by the method of the present invention, first, a predetermined amount of a polyolefin resin, the above-mentioned flame retardant, and a foaming agent are blended,
Mix or knead to prepare a coating resin composition. At this time, various other conventionally used additives may be added as necessary. For example, fillers such as talc and silica, antioxidants, copper inhibitors, and colorants may be added, and cups such as silane and titanium may be added to improve the dispersibility of flame retardants in polyolefin resins. Flame retardants treated with ring agents may also be used.
また必要に応じ従来から使用されて来たハロゲン系、リ
ン系またはアンチモン系化合物を併用しても良い。Furthermore, conventionally used halogen-based, phosphorus-based or antimony-based compounds may be used in combination, if necessary.
混練乃至混合は常法に従って行えば良（たとえばバンバ
リー、ロール等を用いて行えば良い。Kneading or mixing may be carried out according to a conventional method (for example, it may be carried out using a Banbury, a roll, etc.).
本発明に於いては、かくして得られた被覆用樹脂組成物
を押出機を用いて導体上に押出し被覆する。この際の処
理手段も従来から採用されて来た各種の手段がいずれも
広く採用出来る。発泡度としては、通常１０〜６０％、
好ましくは２０〜５０％である。発泡度１０％未溝では
所望の電気特性を得ることは難しく、また６０％より大
きい発泡体を得るにはこの方法では困難である。In the present invention, the thus obtained coating resin composition is extruded and coated onto a conductor using an extruder. As for the processing means at this time, any of the various means that have been conventionally employed can be widely adopted. The degree of foaming is usually 10-60%,
Preferably it is 20-50%. It is difficult to obtain the desired electrical properties with a non-grooved foam having a foaming degree of 10%, and it is difficult to obtain a foam with a foaming degree of more than 60% using this method.
かくして得られた発泡絶縁被覆電線を次いで架橋する。The foamed insulated wire thus obtained is then crosslinked.
この際の架橋手段としても広く各種の手段が採用出来る
が、好ましくは水架橋法と電子線架橋法である。これ等
水架橋法並びに電子架橋法自体は従来公知の方法で良い
。これ等架橋法としては、１５０℃以下の温度で行うこ
とが必要である。その理由としては、ポリオレフィン系
樹脂に配合されている難燃剤が熱に対してあまり安定で
ないためであり、これ以上の温度で架橋する場合には難
燃剤が分解し、所望の難燃性を得られない場合が生じる
からである。Although a wide variety of crosslinking methods can be employed at this time, water crosslinking and electron beam crosslinking are preferred. These water crosslinking methods and electronic crosslinking methods themselves may be conventionally known methods. These crosslinking methods need to be carried out at a temperature of 150° C. or lower. The reason for this is that the flame retardant blended into polyolefin resins is not very stable against heat, and when crosslinking occurs at temperatures higher than this, the flame retardant decomposes and the desired flame retardance is not achieved. This is because there may be cases where it is not possible.
以下に実施例並びに比較例を挙げて本発明法を説明する
。The method of the present invention will be explained below with reference to Examples and Comparative Examples.
実施例１〜３
下記第１表に示す所定の成分を配合し、熱ロールにより
１３５℃で２０分間混練した。この混練物を０．５ｎ＋
φの軟銅線上に０．３ｍ厚みの絶縁層となるように押出
し被覆し、発泡被覆層を形成した。次いで第１表に示す
方法により架橋して電線を製造し、得られた電線につい
て各種の物性を測定してこの結果を第１表に示した。但
し各種物性は次の方法で測定したものである。Examples 1 to 3 Predetermined components shown in Table 1 below were blended and kneaded at 135° C. for 20 minutes using hot rolls. 0.5n+ of this kneaded material
An insulating layer having a thickness of 0.3 m was extruded and coated onto an annealed copper wire having a diameter of φ to form a foamed coating layer. Next, an electric wire was produced by crosslinking according to the method shown in Table 1, and various physical properties of the obtained electric wire were measured, and the results are shown in Table 1. However, various physical properties were measured using the following methods.
誘電率 ：変成器ブリッジ法により測定した。Dielectric constant: Measured by transformer bridge method.
誘電正接：変成器ブリッジ法により測定した。Dielectric loss tangent: Measured by the transformer bridge method.
絶縁抵抗：超絶縁計により測定した。Insulation resistance: Measured using a super insulation meter.
難燃性 ：ガスバーナーの炎を電線に近づけ、燃焼を開
始させる。炎を取り去った後に
消火するものを自己消火性とした。Flame retardant: Bring the flame of a gas burner close to the electric wire and start combustion. Items that extinguish after the flame is removed are considered self-extinguishing.
燃焼時のハロゲン：消炎色反応によった。Halogen during combustion: Based on an anti-flame color reaction.
熱変形 ：１２０℃のギヤーオーブン中に３０分間保持
し、絶縁層の熱変形を目視によ
り観察した。Thermal deformation: The product was kept in a gear oven at 120° C. for 30 minutes, and the thermal deformation of the insulating layer was visually observed.
但し第１表中のＥＶＡ、Ｌ−ＬＤＰＥ、タフマーとは夫
々次のものを指す。However, EVA, L-LDPE, and Tafmer in Table 1 refer to the following, respectively.
ＥＶＡ ：エチレンー酢酸ビニル共重合体（酢酸ビニ
ル含量１５重量％）
Ｌ−ＬＤＰＥ ：低密度直鎖状ポリエチレン（密度：Ｏ
，，９２、ＭＩ：０．５）
タフマー 二エチレンーαオレフィン共重合体（三井石
油化学■製、ＭＩ：２．Ｏ）
比較例１〜３
上記第１表の所定配合比で各成分を混合乃至混練し、そ
の他は実施例１〜３と同様に処理した。EVA: Ethylene-vinyl acetate copolymer (vinyl acetate content: 15% by weight) L-LDPE: Low-density linear polyethylene (density: O
,,92, MI: 0.5) Tafmer diethylene-α-olefin copolymer (manufactured by Mitsui Petrochemicals, MI: 2.0) Comparative Examples 1 to 3 Each component was mixed at the specified blending ratio in Table 1 above. The mixture was kneaded and otherwise treated in the same manner as in Examples 1 to 3.
物性を第１表に併記した。The physical properties are also listed in Table 1.
（以上）(that's all)
Claims (6)
金属複合酸化物の水和物から成る難燃剤及び架橋剤から
成る発泡性被覆組成物を電線用導体表面に発泡押出被覆
し、然る後低温下で架橋することを特徴とする難燃性発
泡ポリオレフィン絶縁電線の製造方法。(1) Polyolefin resin, metal oxide or (and)
A flame-retardant foam characterized in that a foamable coating composition consisting of a flame retardant consisting of a hydrate of a metal composite oxide and a crosslinking agent is extruded and coated on the surface of an electric wire conductor, and then crosslinked at a low temperature. Method for manufacturing polyolefin insulated wire.
レフィン系樹脂である特許請求の範囲第１項に記載の絶
縁電線の製造方法。(2) The method for manufacturing an insulated wire according to claim 1, wherein the foamable polyolefin resin is a water-crosslinked polyolefin resin.
ムから選ばれる少なくとも１種である特許請求の範囲第
１項に記載の絶縁電線の製造方法。(3) The method for manufacturing an insulated wire according to claim 1, wherein the flame retardant is at least one selected from aluminum hydroxide and magnesium hydroxide.
は１０〜６０％である特許請求の範囲第１項に記載の絶
縁電線の製造方法。(4) The method for manufacturing an insulated wire according to claim 1, wherein the degree of foaming of the foamable coating composition in the foaming extrusion coating is 10 to 60%.
行うことを特徴とする特許請求の範囲第１項に記載の絶
縁電線の製造方法。(5) The method for manufacturing an insulated wire according to claim 1, wherein the crosslinking after the foam extrusion coating is carried out at a low temperature of 150° C. or lower.
を特徴とする特許請求の範囲第１項又は第５項に記載の
絶縁電線の製造方法。(6) The method for manufacturing an insulated wire according to claim 1 or 5, wherein the crosslinking is performed by a water crosslinking method or a radiation irradiation method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26916686A JPS63124311A (en) | 1986-11-12 | 1986-11-12 | Manufacture of flame resisting foam polyolefine insulated wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26916686A JPS63124311A (en) | 1986-11-12 | 1986-11-12 | Manufacture of flame resisting foam polyolefine insulated wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63124311A true JPS63124311A (en) | 1988-05-27 |
Family
ID=17468597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26916686A Pending JPS63124311A (en) | 1986-11-12 | 1986-11-12 | Manufacture of flame resisting foam polyolefine insulated wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63124311A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02195605A (en) * | 1988-12-07 | 1990-08-02 | Union Carbide Chem & Plast Co Inc | Flame retardent composition |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51132254A (en) * | 1974-10-17 | 1976-11-17 | Yazaki Corp | Flame-retardant crosslinked polyolefin composition |
| JPS5389992A (en) * | 1977-01-18 | 1978-08-08 | Fujikura Ltd | Foaming polyolefine insulated wire |
-
1986
- 1986-11-12 JP JP26916686A patent/JPS63124311A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51132254A (en) * | 1974-10-17 | 1976-11-17 | Yazaki Corp | Flame-retardant crosslinked polyolefin composition |
| JPS5389992A (en) * | 1977-01-18 | 1978-08-08 | Fujikura Ltd | Foaming polyolefine insulated wire |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02195605A (en) * | 1988-12-07 | 1990-08-02 | Union Carbide Chem & Plast Co Inc | Flame retardent composition |
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