JPS63254619A - Manufacture of foam fluorocarbon resin insulated wire - Google Patents
Manufacture of foam fluorocarbon resin insulated wireInfo
- Publication number
- JPS63254619A JPS63254619A JP8936687A JP8936687A JPS63254619A JP S63254619 A JPS63254619 A JP S63254619A JP 8936687 A JP8936687 A JP 8936687A JP 8936687 A JP8936687 A JP 8936687A JP S63254619 A JPS63254619 A JP S63254619A
- Authority
- JP
- Japan
- Prior art keywords
- foaming
- insulated wire
- fluororesin
- foam
- manufacture
- 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
- 239000011347 resin Substances 0.000 title claims description 7
- 229920005989 resin Polymers 0.000 title claims description 7
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000006260 foam Substances 0.000 title description 5
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 title 1
- 238000000034 method Methods 0.000 claims description 7
- 229920001577 copolymer Polymers 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 3
- 239000012943 hotmelt Substances 0.000 claims 1
- 238000005187 foaming Methods 0.000 description 18
- 239000004088 foaming agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 229910052582 BN Inorganic materials 0.000 description 3
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 3
- 230000008054 signal transmission Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000004604 Blowing Agent Substances 0.000 description 2
- VOPWNXZWBYDODV-UHFFFAOYSA-N Chlorodifluoromethane Chemical compound FC(F)Cl VOPWNXZWBYDODV-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- AJDIZQLSFPQPEY-UHFFFAOYSA-N 1,1,2-Trichlorotrifluoroethane Chemical compound FC(F)(Cl)C(F)(Cl)Cl AJDIZQLSFPQPEY-UHFFFAOYSA-N 0.000 description 1
- DDMOUSALMHHKOS-UHFFFAOYSA-N 1,2-dichloro-1,1,2,2-tetrafluoroethane Chemical compound FC(F)(Cl)C(F)(F)Cl DDMOUSALMHHKOS-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- 241000894006 Bacteria Species 0.000 description 1
- XPDWGBQVDMORPB-UHFFFAOYSA-N Fluoroform Chemical compound FC(F)F XPDWGBQVDMORPB-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- AFYPFACVUDMOHA-UHFFFAOYSA-N chlorotrifluoromethane Chemical compound FC(F)(F)Cl AFYPFACVUDMOHA-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- PXBRQCKWGAHEHS-UHFFFAOYSA-N dichlorodifluoromethane Chemical compound FC(F)(Cl)Cl PXBRQCKWGAHEHS-UHFFFAOYSA-N 0.000 description 1
- 235000019404 dichlorodifluoromethane Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Landscapes
- Organic Insulating Materials (AREA)
- 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、コンピュータをはじめとする電子機器の信号
伝送線への適用に好適な発泡ふっ素樹脂絶縁電線の製造
方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method of manufacturing a foamed fluororesin insulated wire suitable for application to signal transmission lines of electronic devices such as computers.
［従来の技術］
コンピュータおよびその周辺機器をはじめとする電子機
器の発展に伴い、機器に使用される信号伝送用の電線・
ケーブルに対しても高性能化、高信頼化が強く要求され
るようになってきている。その中でも特に絶縁被覆が薄
＜、信号伝送速度が速く、雑音や漏話がなく、しかも難
燃性であるといったような要求が強い。[Background Art] With the development of electronic devices such as computers and their peripheral devices, the electric wires and wires used for signal transmission in the devices have increased.
There is also a strong demand for higher performance and higher reliability for cables. Among these, there are particularly strong demands for thin insulation coatings, high signal transmission speeds, no noise or crosstalk, and flame retardancy.
これらの要求を満足させるには、本質的に難燃性で、し
かも電気的特性が良好であるふっ素樹脂好適であり、さ
らにこれを発泡させることが比誘電率等の電気的特性の
向上につながる。To meet these requirements, fluororesin is suitable because it is inherently flame retardant and has good electrical properties, and foaming this resin leads to improvements in electrical properties such as dielectric constant. .
発泡ふっ素樹脂絶縁被覆を形成するための種々の方法が
提案されており、例えば、特開昭５１１１３４０号公報
においては、発泡剤としてフレオンガスを、また、発泡
助剤として特定の窒化硼素を使用することが記載されて
いる。Various methods have been proposed for forming a foamed fluororesin insulation coating. For example, Japanese Patent Application Laid-Open No. 5111340 discloses the use of Freon gas as a foaming agent and specific boron nitride as a foaming aid. is listed.
［発明が解決しようとする問題点］
しかしながら、特開昭５９−１１３４０号公報のように
発泡剤をふっ素樹脂に含浸させる方法では、発泡度が８
０％を越えるような超高発泡体を得ることは困雉である
。また、ふっ素樹脂の発泡方法においては、各種要菌が
互いに影響しあい、発泡剤や発泡助剤の選定のみでは優
れた発泡体を得ることは難しい。特に、絶縁被覆が１ｍ
ｍ以下で発泡度が８０％以上のものを得る場合には、多
数の微細気泡が均一に分布していることが必要であるが
、従来技術では実現できない状況にある。[Problems to be Solved by the Invention] However, in the method of impregnating a fluororesin with a foaming agent as disclosed in JP-A-59-11340, the degree of foaming is 8.
It is difficult to obtain an ultra-high foam with a content exceeding 0%. Furthermore, in the method of foaming fluororesin, various types of bacteria interact with each other, and it is difficult to obtain an excellent foam simply by selecting the foaming agent and foaming aid. In particular, the insulation coating is 1m long.
In order to obtain a foaming degree of 80% or more at m or less, it is necessary that a large number of microbubbles be uniformly distributed, but this cannot be achieved using conventional techniques.
本発明は、上記に基づいてなされたものであり、多数の
微細気泡を均一に分布させることにより発泡度か８０％
以上という超高発泡の絶縁被覆の形成が可能となる発泡
ふっ素樹脂絶縁電線の製造方法の提供を目的とするもの
である。The present invention has been made based on the above, and by uniformly distributing a large number of microbubbles, the degree of foaming can be increased to 80%.
The object of the present invention is to provide a method for manufacturing a foamed fluororesin insulated wire that enables the formation of an ultra-highly foamed insulation coating as described above.
［問題点を解決するための手段］
本発明の発泡ふっ素樹脂絶縁電線の製造方法は、ふっ素
樹脂としてテトラフルオロエチレン−ヘキサフルオロプ
ロピレン共重合体（ＦＥＰ）１０〜９０重量％とテトラ
フルオロエチレン−パ−フルオロアルキルビニルエーテ
ル共重合体（ＰＦＡ）９０〜１０重量％のブレンド樹脂
を用い、これを押出機に導入して溶融すると共に発泡剤
を均一に分散させた後、導体外周に押出被覆することを
特徴とするものである。[Means for Solving the Problems] The method for producing a foamed fluororesin insulated wire of the present invention uses 10 to 90% by weight of tetrafluoroethylene-hexafluoropropylene copolymer (FEP) and tetrafluoroethylene-polymer as the fluororesin. - Using a blended resin containing 90 to 10% by weight of fluoroalkyl vinyl ether copolymer (PFA), introduce this into an extruder to melt it and uniformly disperse the foaming agent, and then extrusion coat the outer periphery of the conductor. This is a characteristic feature.
本発明者は、ふっ素樹脂からなる発泡体の高発泡化につ
いて種々検討した結果、ＦＥＰとＰＦＡとのブレンド樹
脂を使用することにより超高発泡化を実現できることを
見出したものである。この場合、ＦＥＰ／Ｉ）ＦＡのブ
レンド比率は９０〜１０７１０〜９０の範囲とする必要
かあり、この範囲を外れると超高発泡化が困難となる。As a result of various studies on increasing the foaming rate of foams made of fluororesin, the present inventors have discovered that ultrahigh foaming can be achieved by using a blended resin of FEP and PFA. In this case, the blend ratio of FEP/I)FA needs to be in the range of 90 to 10,710 to 90, and if it is out of this range, it will be difficult to achieve ultra-high foaming.
本発明で使用する発泡剤としては、フレオン−１１、フ
レオン−１２、フレオン−１３、フレオン−１４、フレ
オン−２２、フレオン−２３、フレオン−１１３、フレ
オン−１１４等のふっ素化炭素が代表的であるが、窒素
、ヘリウム、ネオン、アルゴン等の不活性ガス、プロパ
ン、ブタン、ヘキサン、ペンタン等の炭化水素であって
もよい。Typical blowing agents used in the present invention include fluorinated carbons such as Freon-11, Freon-12, Freon-13, Freon-14, Freon-22, Freon-23, Freon-113, and Freon-114. However, inert gases such as nitrogen, helium, neon, and argon, and hydrocarbons such as propane, butane, hexane, and pentane may also be used.
発泡剤の添加方法としては、予め樹脂に発泡剤を含浸、
溶解させてもよく、また、押出機中に発泡剤を注入する
方法でもよい。The method of adding the foaming agent is to impregnate the resin with the foaming agent in advance,
It may be dissolved or a blowing agent may be injected into an extruder.
本発明においては、気泡径の調整および均一な気泡の形
成を容易とするために発泡核斉１ｊを使用してもよく、
発泡核剤としては、窒化硼素、酸化ケイ素、酸化チタン
、酸化アルミナ、酸化ジルコニウム等があげられる。In the present invention, foaming nuclei uniformity 1j may be used to facilitate adjustment of the bubble diameter and formation of uniform bubbles,
Examples of the foaming nucleating agent include boron nitride, silicon oxide, titanium oxide, alumina oxide, and zirconium oxide.
［発明の実施例コ
ＦＥＰとＰＦＡのブレンド割合が第１表の各側に示すよ
うな配合のふっ素樹脂を用い、これに窒化硼素を０．５
重量％添加したものを押出機のホッパーから供給し、押
出機の中間部でフレオン−２２を５〜６ｋｇ／ｃｍ２Ｇ
の圧力で注入して溶融樹脂中に均一に分散させ、外径０
．２ｍｍφの導体外周に厚さ０．３ｍｍに押出被覆した
。なお、押出条件は、２０ ｍ ｍ押出機を用い、Ｌ／
Ｄ＝２５、圧縮比＝２．５、供給部の溝深さ＝２．５ｍ
ｍ、計量部の溝深さ＝１．Ｏｍｍ、スクリュウ回転数＝
４ｒｐｍ、シリンダ各部の設定温度＝４００℃、クロス
ヘッド設定温度＝３７０℃、ダイス設定温度＝３２０℃
、ダイス内径＝０．５ｍｍであった。[Embodiment of the invention] A fluororesin having a blend ratio of FEP and PFA as shown on each side of Table 1 was used, and 0.5 boron nitride was added to it.
Freon-22 was added at 5 to 6 kg/cm2G in the middle part of the extruder.
It is injected at a pressure of 0 to uniformly disperse in the molten resin,
．． The outer periphery of a 2 mmφ conductor was coated by extrusion to a thickness of 0.3 mm. The extrusion conditions were as follows: 20 mm extruder, L/
D = 25, compression ratio = 2.5, feed section groove depth = 2.5 m
m, groove depth of measuring part = 1. Omm, screw rotation speed =
4 rpm, set temperature of each part of cylinder = 400°C, crosshead set temperature = 370°C, die set temperature = 320°C
, the die inner diameter was 0.5 mm.
各側の発泡絶縁電線の発泡度は第１表に示す通りであり
、ＦＥＰ／ＰＦＡ のブレンド比率が９０〜１ｏ／１０
〜９０を外れる場合は、発泡度が８０％以上のものを得
ることができない。The foaming degree of the foam insulated wire on each side is as shown in Table 1, and the blend ratio of FEP/PFA is 90 to 1o/10.
If it is outside of 90, it is not possible to obtain a foaming degree of 80% or more.
なお、発泡度は次式から求めた。Note that the degree of foaming was determined from the following formula.
発泡度＝ ｆｌ−（ρ／ρＪＩ Ｘ１００ Ｃ％］（
ρ：発泡体の比重、ρ０：非発泡体の比重）第１表
「発明の効果」
以上説明してきた通り、本発明によれば多数の微細気泡
を均一に分布させることができ、発泡度が８０％以上の
超高発泡の絶縁被覆を実現できるようになる。Foaming degree = fl-(ρ/ρJI X100 C%](
ρ: specific gravity of foamed material, ρ0: specific gravity of non-foamed material) Table 1 "Effects of the Invention" As explained above, according to the present invention, a large number of microbubbles can be uniformly distributed, and the degree of foaming can be increased. It becomes possible to realize an insulation coating with ultra-high foaming of 80% or more.
Claims (1)
樹脂を導体外周に押出被覆する発泡ふっ素樹脂絶縁電線
の製造方法において、前記ふっ素樹脂としてテトラフル
オロエチレン−ヘキサフルオロプロピレン共重合体１０
〜９０重量％とテトラフルオロエチレン−パ−フルオロ
アルキルビニルエーテル共重合体９０〜１０重量％のブ
レンド樹脂を用いることを特徴とする発泡ふっ素樹脂絶
縁電線の製造方法。(1) In a method for manufacturing a foamed fluororesin insulated wire in which the outer periphery of a conductor is coated with a foamed fluororesin by extrusion using a hot-melt extrudable fluororesin, the fluororesin is tetrafluoroethylene-hexafluoropropylene copolymer 10
A method for manufacturing a foamed fluororesin insulated wire, characterized in that a blend resin of ~90% by weight and 90-10% by weight of a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8936687A JPS63254619A (en) | 1987-04-10 | 1987-04-10 | Manufacture of foam fluorocarbon resin insulated wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8936687A JPS63254619A (en) | 1987-04-10 | 1987-04-10 | Manufacture of foam fluorocarbon resin insulated wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63254619A true JPS63254619A (en) | 1988-10-21 |
Family
ID=13968703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8936687A Pending JPS63254619A (en) | 1987-04-10 | 1987-04-10 | Manufacture of foam fluorocarbon resin insulated wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63254619A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011162721A (en) * | 2010-02-12 | 2011-08-25 | Hitachi Cable Ltd | Foaming resin composition, and resin foam and foam-insulated wire using the same |
-
1987
- 1987-04-10 JP JP8936687A patent/JPS63254619A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011162721A (en) * | 2010-02-12 | 2011-08-25 | Hitachi Cable Ltd | Foaming resin composition, and resin foam and foam-insulated wire using the same |
| US9115254B2 (en) | 2010-02-12 | 2015-08-25 | Hitachi Metals, Ltd. | Resin composition, foamed resin using same, and electric wire insulated with foamed resin |
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