JPS63297445A - Watertight mixture - Google Patents
Watertight mixtureInfo
- Publication number
- JPS63297445A JPS63297445A JP13636887A JP13636887A JPS63297445A JP S63297445 A JPS63297445 A JP S63297445A JP 13636887 A JP13636887 A JP 13636887A JP 13636887 A JP13636887 A JP 13636887A JP S63297445 A JPS63297445 A JP S63297445A
- Authority
- JP
- Japan
- Prior art keywords
- vinyl chloride
- watertight
- weight
- mixture
- amount
- 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.)
- Granted
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 35
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229920001577 copolymer Polymers 0.000 claims abstract description 17
- 239000004840 adhesive resin Substances 0.000 claims abstract description 10
- 229920006223 adhesive resin Polymers 0.000 claims abstract description 10
- 229920000728 polyester Polymers 0.000 claims abstract description 10
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 4
- 229920005989 resin Polymers 0.000 abstract description 11
- 239000011347 resin Substances 0.000 abstract description 11
- 238000002156 mixing Methods 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 150000002148 esters Chemical class 0.000 abstract description 2
- 239000000945 filler Substances 0.000 abstract description 2
- 239000004020 conductor Substances 0.000 description 25
- 239000004014 plasticizer Substances 0.000 description 24
- 238000009413 insulation Methods 0.000 description 16
- 239000012212 insulator Substances 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 8
- -1 1.5 -bentanediol Chemical compound 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 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 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- ZVFDTKUVRCTHQE-UHFFFAOYSA-N Diisodecyl phthalate Chemical compound CC(C)CCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC(C)C ZVFDTKUVRCTHQE-UHFFFAOYSA-N 0.000 description 2
- 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 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- HBGGXOJOCNVPFY-UHFFFAOYSA-N diisononyl phthalate Chemical compound CC(C)CCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCC(C)C HBGGXOJOCNVPFY-UHFFFAOYSA-N 0.000 description 2
- XWVQUJDBOICHGH-UHFFFAOYSA-N dioctyl nonanedioate Chemical compound CCCCCCCCOC(=O)CCCCCCCC(=O)OCCCCCCCC XWVQUJDBOICHGH-UHFFFAOYSA-N 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- YPFDHNVEDLHUCE-UHFFFAOYSA-N propane-1,3-diol Chemical compound OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 2
- JNXDCMUUZNIWPQ-UHFFFAOYSA-N trioctyl benzene-1,2,4-tricarboxylate Chemical compound CCCCCCCCOC(=O)C1=CC=C(C(=O)OCCCCCCCC)C(C(=O)OCCCCCCCC)=C1 JNXDCMUUZNIWPQ-UHFFFAOYSA-N 0.000 description 2
- LIAWCKFOFPPVGF-UHFFFAOYSA-N 2-ethyladamantane Chemical compound C1C(C2)CC3CC1C(CC)C2C3 LIAWCKFOFPPVGF-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229920002367 Polyisobutene Polymers 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- ARCGXLSVLAOJQL-UHFFFAOYSA-N anhydrous trimellitic acid Natural products OC(=O)C1=CC=C(C(O)=O)C(C(O)=O)=C1 ARCGXLSVLAOJQL-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- ZFMQKOWCDKKBIF-UHFFFAOYSA-N bis(3,5-difluorophenyl)phosphane Chemical compound FC1=CC(F)=CC(PC=2C=C(F)C=C(F)C=2)=C1 ZFMQKOWCDKKBIF-UHFFFAOYSA-N 0.000 description 1
- OWBTYPJTUOEWEK-UHFFFAOYSA-N butane-2,3-diol Chemical compound CC(O)C(C)O OWBTYPJTUOEWEK-UHFFFAOYSA-N 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 239000000346 nonvolatile oil Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 235000019271 petrolatum Nutrition 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 125000005591 trimellitate group Chemical group 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は水密性混和物に関するものであり、より詳しく
は、塩化ビニル絶縁電線における撚線導体間の空隙およ
び撚線導体と塩化ビニル絶縁体との間に充填されて、導
体と塩化ビニル樹脂との双方に接着する水密性混和物に
関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a watertight mixture, and more particularly, the present invention relates to a watertight mixture, and more particularly, to a gap between stranded conductors in a vinyl chloride insulated wire, and a stranded conductor and a vinyl chloride insulator. This invention relates to a watertight mixture that is filled between the conductor and the vinyl chloride resin and adheres to both the conductor and the vinyl chloride resin.
［従来技術およびその問題点］
屋外の高圧配電線や低圧配電線等においては、応力腐食
による断線事故が発生することがある。[Prior art and its problems] In outdoor high-voltage distribution lines, low-voltage distribution lines, etc., disconnection accidents due to stress corrosion may occur.
このような断線事故は、配電線の撚線導体間の空隙に腐
食性の雨水が浸入して、導体素線が酸化されることに起
因すると考えられている。Such wire breakage accidents are thought to be caused by corrosive rainwater entering the gaps between the stranded conductors of the distribution line and oxidizing the conductor strands.
従って、このような断線事故を防止する対策として、例
えば、撚線導体間の空隙に水密性混和物を充填し、雨水
の浸入と走水を防止する方法が知られている。Therefore, as a measure to prevent such disconnection accidents, for example, a method is known in which the gaps between the stranded wire conductors are filled with a watertight mixture to prevent rainwater from entering and running.
このような水密性混和物としては、エポキシ樹脂と低分
子のポリアミド又はポリサルファイド硬化剤とから成る
ゴム状の水密性混和物、低粘度ゴムに不揮発性油、加硫
剤および加硫助剤を加えて成るゴム状の水密性混和物、
粘着性に富むポリイソブチレンに、パラフィン又は石油
ゼリーと更に無機粉末又は無機繊維を加えて成る水密性
混和物などが知られている。Such watertight mixtures include rubbery watertight mixtures consisting of epoxy resin and low-molecular-weight polyamide or polysulfide curing agents, low-viscosity rubbers with fixed oils, vulcanizing agents, and vulcanization aids. A rubbery watertight mixture consisting of
Watertight mixtures made by adding paraffin or petroleum jelly and further inorganic powder or inorganic fibers to highly adhesive polyisobutylene are known.
しかし、上記の各水密性混和物では撚線導体間の空隙へ
の充填作業が円滑に行なえないという問題や、絶縁電線
中の導体からの水密性混和物の剥ぎ取りが困難であると
いう問題ををしているため、エチレン・酢酸ビニル共重
合体（ＥＶＡ）若しくはエチレン・エチルアクリレート
共重合体（ＥＥＡ）又はこれらのブレンド物を主成分と
するドライタイプの水密性混和物が開発された。However, with each of the above watertight admixtures, there are problems such as the inability to smoothly fill the voids between stranded wire conductors and the difficulty in stripping the watertight admixtures from the conductors in insulated wires. Therefore, dry type watertight mixtures containing ethylene/vinyl acetate copolymer (EVA), ethylene/ethyl acrylate copolymer (EEA), or a blend thereof as a main component have been developed.
しかしながら、ＥＶＡやＥＥＡは塩化ビニル樹脂との接
着性に劣るため、屋外低圧配電線として多用される塩化
ビニル絶縁電線の場合には、ＥＶＡまたはＥＥＡを用い
て撚線導体間の空隙を充填しても、外被絶縁体の塩化ビ
ニル樹脂とは殆ど接着しない。従って、外被絶縁体とＥ
ＶＡ層またはＥＥＡ層との間を雨水が走水し、十分に水
密とすることができないという問題や、電線を接続する
ために外被絶縁体を剥離する場合に、外被絶縁体とＥＶ
Ａ層等とが分離して導体上に水密性混和物が残り、接続
に支障をきたすという問題があった。However, since EVA and EEA have poor adhesion to vinyl chloride resin, in the case of vinyl chloride insulated wires that are often used as outdoor low-voltage distribution lines, EVA or EEA is used to fill the gaps between stranded conductors. However, it hardly adheres to the vinyl chloride resin of the jacket insulator. Therefore, the jacket insulation and E
There are problems such as rain water running between the VA layer or EEA layer, making it impossible to make the insulation sufficiently watertight, and when peeling off the insulation jacket to connect electric wires, the insulation between the jacket insulation and the EV
There was a problem in that the A layer etc. were separated and a watertight mixture remained on the conductor, causing problems in connection.
本発明の目的は、塩化ビニル絶縁電線の撚線導体間の空
隙に充填する水密性混和物であって、■ 均質であり、
■ 導体金属と塩化ビニル樹脂との双方に対して良好な
接着性を有するとともにドライタイプであり、
■ 電気工事において塩化ビニル絶縁電線の外被絶縁体
を剥離するとき、絶縁体と分離することなく一体となっ
て剥離され、導体上に残らず、
■ 塩化ビニル絶縁電線の撚線導体間の空隙に、容易に
充填できる
水密性混和物を提供する処にある。The object of the present invention is to provide a watertight mixture that fills the voids between the stranded conductors of a vinyl chloride insulated wire, which is: (1) homogeneous, and (2) has good adhesion to both the conductor metal and the vinyl chloride resin. ■ When removing the outer insulation of a PVC insulated wire during electrical work, it is removed as one piece without separating from the insulator, and does not remain on the conductor. ■ PVC insulation It is an object of the present invention to provide a watertight mixture that can be easily filled into gaps between stranded conductors of an electric wire.
［問題点を解決するための手段］
本発明の水密性混和物は、酢酸ビニル・塩化ビニル共重
合体１００重量部に対して、ポリエステル系接着性樹脂
を１０〜６０重量部配合して成るものである。[Means for solving the problems] The watertight mixture of the present invention is made by blending 10 to 60 parts by weight of a polyester adhesive resin with respect to 100 parts by weight of vinyl acetate/vinyl chloride copolymer. It is.
また、本発明の好適な実施態様は、前記共重合体におけ
る塩化ビニル（ＶＣ）の含有量が、７０〜９５重量％で
あることを特徴とするものである。Further, a preferred embodiment of the present invention is characterized in that the content of vinyl chloride (VC) in the copolymer is 70 to 95% by weight.
本発明に用いる酢酸ビニル−塩化ビニル共重合体は、通
常使用される酢酸ビニル・塩化ビニル共重合体であれば
よいが、その組成において、塩化ビニルの含有量が、７
０重量％以下であれば、塩化ビニル絶縁体との接着強度
が充分に得られない場合がある。また、塩化ビニルの含
有量が、９５重量％以上であれば、導体との接着強度が
充分に得られない場合がある。従って、塩化ビニルの含
有量は、７０〜９５重量％であることが好ましく、より
好ましくは８０〜９０重量％である。The vinyl acetate-vinyl chloride copolymer used in the present invention may be any commonly used vinyl acetate-vinyl chloride copolymer, but in its composition, the vinyl chloride content is 7.
If it is less than 0% by weight, sufficient adhesive strength with the vinyl chloride insulator may not be obtained. Moreover, if the content of vinyl chloride is 95% by weight or more, sufficient adhesive strength with the conductor may not be obtained. Therefore, the content of vinyl chloride is preferably 70 to 95% by weight, more preferably 80 to 90% by weight.
本発明に用いるポリエステル系接着性樹脂は、通常使用
されるポリエステル系接着性樹脂であればよいが、その
主要な構成原料は、例えば、飽和酸として、イソフタル
酸、テレフタル酸、アジピン酸、セパチン酸、こはく酸
、無水フタル酸、アゼライン酸、ヘット酸などを挙げる
ことができ、グリコールとしては、エチレングリコール
、１、４−ブタンジオール、プロピレングリコール、１
、３−ブタンジオール、ジエチレングリコール、トリメ
チレングリコール、１，６−ヘキサンジオール、１．５
−ベンタンジオール、トリエチレングリコール、２，３
−ブタンジオールなどを挙げることができる。本発明の
水密性混和物において、このようなポリエステル系接着
性樹脂の配合量が、酢酸ビニル・塩化ビニル共重合体１
００重量部に対して１０重量部以下であれば、導体との
接着強度が充分に得られない。一方、ポリエステル系接
着性樹脂の配合量が、前記の共重合体１００重量部に対
して６０重量部以上であれば、導体との接着強度が大き
くなり過ぎるため、塩化ビニル絶縁体を剥離する際に水
密性混和物が導体上に残るとともに、水密性混和物の材
料コストも高くなる。従って、ポリエステル系接着性樹
脂は、共重合体１００重量部に対し、１０〜６０重量部
配合して。好ましい配合量は２０〜５０重量部である。The polyester adhesive resin used in the present invention may be any commonly used polyester adhesive resin, but its main constituent raw materials include, for example, saturated acids such as isophthalic acid, terephthalic acid, adipic acid, and cepatic acid. Examples of glycols include ethylene glycol, 1,4-butanediol, propylene glycol,
, 3-butanediol, diethylene glycol, trimethylene glycol, 1,6-hexanediol, 1.5
-bentanediol, triethylene glycol, 2,3
-Butanediol, etc. can be mentioned. In the watertight mixture of the present invention, the blending amount of such polyester adhesive resin is 1 part vinyl acetate/vinyl chloride copolymer.
If the amount is less than 10 parts by weight relative to 00 parts by weight, sufficient adhesive strength with the conductor cannot be obtained. On the other hand, if the blending amount of the polyester adhesive resin is 60 parts by weight or more based on 100 parts by weight of the above-mentioned copolymer, the adhesive strength with the conductor will be too high, so when peeling the vinyl chloride insulator, In addition, the watertight admixture remains on the conductor, and the material cost of the watertight admixture is also increased. Therefore, the polyester adhesive resin is blended in an amount of 10 to 60 parts by weight per 100 parts by weight of the copolymer. The preferred amount is 20 to 50 parts by weight.
なお、本発明の必須の構成要素ではないが、本発明の水
密性混和物に、可塑剤を配合してもよい。そのような可
塑剤としては、ジオクチルフタレート（ＤＯＰ）、ジイ
ソデシルフタレート（ＤＩＤＰ）、ジイソノニルフタレ
ート（ＤＩＮＰ）などのフタル酸エステル系可塑剤；ト
リオクチルトリメリテート（ＴＯＴＭ） 、）リイソノ
ニルトリメリテート（Ｔ Ｉ ＮＴＭ）などのトリメリ
ット酸エステル系可塑剤；ジオクチルアジペート（ＤＯ
Ａ） 、ジオクチルアゼレート（ＤＯＺ）などの脂肪酸
エステル系可塑剤；クレジルジフェニルホスフェート（
ＣＤＰ）、トリクレジルホスフェート（ＴＣＰ）などの
リン酸エステル系可塑剤；エポキシ系可塑剤；ポリエス
テル系可塑剤；などが挙げられるが、フタル酸エステル
系可塑剤やトリメリット酸エステル系可塑剤が好ましい
。このような可塑剤の水密性混和物への配合量は、可塑
剤の種類、共重合体の組成、ポリエステル系接着性樹脂
の種類、外被絶縁体の塩化ビニル樹脂に含まれている可
塑剤の種類および量などにより、種々の値を取り得るが
、外被絶縁体の塩化ビニル樹脂中の可塑剤の含有量に近
いことが好ましい。外被絶縁体中の可塑剤の量に比べて
少なすぎると、外被絶縁体から水密性混和物への可塑剤
の移行が起こり、外被絶縁体が硬化し機械的特性が低下
する。また、外被絶縁体中の可塑剤の量に比べて多すぎ
ると、水密性混和物から外被絶縁体への可塑剤の移行が
起こり、外被絶縁体が柔かくなりすぎるとともに電気特
性が低下する。従って、通常外被絶縁体として用いられ
ている塩化ビニル樹脂中の可塑剤の量からすると、水密
性混和物に配合する可塑剤の量は、共重合体１００重量
部に対し、１５〜５０重量部が好ましく、より好ましく
は２５〜４０重量部である。Although it is not an essential component of the present invention, a plasticizer may be added to the watertight mixture of the present invention. Such plasticizers include phthalate ester plasticizers such as dioctyl phthalate (DOP), diisodecyl phthalate (DIDP), and diisononyl phthalate (DINP); trioctyl trimellitate (TOTM), and diisononyl trimellitate. Trimellitic acid ester plasticizers such as (TI NTM); dioctyl adipate (DO
A) Fatty acid ester plasticizers such as dioctyl azelate (DOZ); cresyl diphenyl phosphate (
CDP), phosphate ester plasticizers such as tricresyl phosphate (TCP); epoxy plasticizers; polyester plasticizers; but phthalate ester plasticizers and trimellitic ester plasticizers preferable. The amount of plasticizer added to the watertight mixture depends on the type of plasticizer, the composition of the copolymer, the type of polyester adhesive resin, and the plasticizer contained in the vinyl chloride resin of the jacket insulation. Although various values can be taken depending on the type and amount of the plasticizer, it is preferable that the content be close to the content of the plasticizer in the vinyl chloride resin of the jacket insulator. If the amount of plasticizer is too low relative to the amount of plasticizer in the jacket insulation, migration of the plasticizer from the jacket insulation to the watertight admixture will occur, hardening the jacket insulation and reducing mechanical properties. Also, if the amount of plasticizer is too high compared to the amount in the jacket insulation, the plasticizer will migrate from the watertight mixture to the jacket insulation, making the jacket insulation too soft and reducing the electrical properties. do. Therefore, considering the amount of plasticizer in the vinyl chloride resin that is normally used as a jacket insulator, the amount of plasticizer to be added to the watertight mixture is 15 to 50 parts by weight per 100 parts by weight of the copolymer. part by weight, more preferably 25 to 40 parts by weight.
また、水密性混和物のメルトインデックス（Ｍｌ値）は
、混和物の混練りの容易さや撚線導体間の空隙への充填
の容易さを考慮すると、５〜１５０であることが好まし
く、より好ましくは１５〜６０である。Further, the melt index (Ml value) of the watertight mixture is preferably 5 to 150, more preferably 5 to 150, considering the ease of kneading the mixture and the ease of filling the voids between the stranded wire conductors. is 15-60.
［実施例］
次に、実施例および比較例により本発明をさらに詳細に
説明するが、本発明はかかる実施例のみに限定されるも
のではない。[Examples] Next, the present invention will be explained in more detail with reference to Examples and Comparative Examples, but the present invention is not limited to these Examples.
実施例１〜４、比較例１〜４
次表に示す実施例および比較例の組成の水密性混和物を
ニーダ−で混練りし、これを、２．０ｍｕφ硬銅線を１
９本撚り合せた導体断面積６ｏＩｌ１１１２の撚線導体
に充填した後に、その上に厚さ１．４龍の塩化ビニル樹
脂絶縁体を被覆して水密性の塩化ビニル絶縁電線を作製
した。これらの絶縁電線における水密性および皮剥性を
測定した結果を次表に示す。Examples 1 to 4, Comparative Examples 1 to 4 Watertight mixtures having the compositions of the Examples and Comparative Examples shown in the following table were kneaded in a kneader, and 1 piece of 2.0 muφ hard copper wire was kneaded.
After filling a 9-wire conductor with a conductor cross-sectional area of 6 o Il 1112 strands, a vinyl chloride resin insulator having a thickness of 1.4 mm was coated thereon to produce a watertight vinyl chloride insulated electric wire. The results of measuring the watertightness and peelability of these insulated wires are shown in the table below.
（以下余白）
表において、水密性の値は、水密性混和物を充填した塩
化ビニル絶縁電線を６０ｃｍ＋に切断し、その片端に０
．５）ｃｇ／ｃ−の水圧をかけて２４時間放置した後、
この絶縁電線を解体して、片端から浸入した水が導体中
を走水した距離（１１１）を測定して求めた。この値が
小さいほど水密性に優れているといえる。(Left below) In the table, the watertightness value is calculated by cutting a PVC insulated wire filled with a watertight mixture into 60cm+ pieces and attaching 0.
．． 5) After applying water pressure of cg/c- and leaving it for 24 hours,
This insulated wire was disassembled, and the distance (111) that water that entered from one end traveled through the conductor was determined. It can be said that the smaller this value is, the better the watertightness is.
皮剥性は、２０℃において塩化ビニル絶縁電線の外被絶
縁体層を電工ナイフで剥離した際に、撚線導体上に残っ
た水密性混和物の量によって示される。表において、Ｏ
印は水密性混和物が撚線導体上に全く残らなかったこと
を示し、Δ印は少し残ったことを示し、Ｘ印はかなり残
ったことを示す。Peelability is indicated by the amount of watertight admixture remaining on the stranded conductor when the outer insulation layer of the vinyl chloride insulated wire is peeled off with an electrical knife at 20°C. In the table, O
The mark indicates that no watertight admixture remained on the stranded conductor, the Δ mark indicates that a little remained, and the X mark indicates that a considerable amount remained.
表から明らかなように、実施例１〜４の水密性混和物は
、いずれも優れた水密性と皮剥性とを有するものであっ
た。As is clear from the table, the watertight mixtures of Examples 1 to 4 all had excellent watertightness and peelability.
一方、比較例１および比゛較例２の水密性混和物におい
ては、水密性と皮剥性の両方を満足させるものはなく、
いずれも実用に適さないものであった。特に、比較例１
においては、４時間で８００１１１走水し、切断した電
線の他端から漏水した。また、比較例３においては、可
塑剤（ジオクチルフタレート）の配合量が酢酸ビニル・
塩化ビニル共重合体の配合量に比べて少ないため、外被
絶縁体の機械的特性が経時的に低下する傾向が見られた
。逆に、比較例４においては、可塑剤の配合量が多いた
め、外被絶縁体が柔かくなりすぎて、水密性および皮剥
性において好ましい結果を得ることができなかった。On the other hand, none of the watertight mixtures of Comparative Example 1 and Comparative Example 2 satisfy both watertightness and peelability.
All of them were unsuitable for practical use. In particular, Comparative Example 1
800,111 water runs in 4 hours, and water leaked from the other end of the cut electric wire. In addition, in Comparative Example 3, the amount of plasticizer (dioctyl phthalate) was different from that of vinyl acetate.
Since the amount of the vinyl chloride copolymer blended was small compared to the amount of vinyl chloride copolymer, there was a tendency for the mechanical properties of the jacket insulator to deteriorate over time. On the other hand, in Comparative Example 4, since the amount of plasticizer blended was large, the jacket insulator became too soft, and favorable results could not be obtained in terms of watertightness and peelability.
なお、実施例では示さなかったが、本発明に係る水密性
混和物には、適宜、安定剤、酸化防止剤、銅害防止剤、
着色剤などを添加することもできる。Although not shown in the examples, the watertight mixture according to the present invention may contain stabilizers, antioxidants, copper damage inhibitors,
Coloring agents and the like may also be added.
［発明の効果］
本発明に係る水密性混和物は、塩化ビニル樹脂および導
体金属との接着強度が極めてすぐれているので、塩化ビ
ニル絶縁電線の水密用の充填剤として使用すれば、十分
な水密性が得られ、この種の絶縁電線で発生していた応
力腐食による断線事故を未然に防止することができる。[Effects of the Invention] The watertight mixture according to the present invention has extremely excellent adhesive strength with vinyl chloride resin and conductive metal, so if it is used as a watertight filler for vinyl chloride insulated wires, it will provide sufficient watertightness. This makes it possible to prevent disconnection accidents due to stress corrosion that occur with this type of insulated wire.
また、絶縁電線の外被絶縁体を剥離するとき、水密性混
和物が絶縁体と一体となって剥離されるので、電気工事
上の作業性も良好なものとなる。Further, when the outer insulation of the insulated wire is peeled off, the watertight mixture is peeled off together with the insulator, which improves workability in electrical work.
Claims (1)
して、ポリエステル系接着性樹脂を１０〜６０重量部配
合して成る水密性混和物。 ２、前記共重合体における塩化ビニルの含有量が、７０
〜９５重量％であることを特徴とする特許請求の範囲第
１項記載の水密性混和物。[Scope of Claims] 1. A watertight mixture comprising 10 to 60 parts by weight of a polyester adhesive resin to 100 parts by weight of vinyl acetate/vinyl chloride copolymer. 2. The content of vinyl chloride in the copolymer is 70
A watertight admixture according to claim 1, characterized in that the amount is 95% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13636887A JPS63297445A (en) | 1987-05-29 | 1987-05-29 | Watertight mixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13636887A JPS63297445A (en) | 1987-05-29 | 1987-05-29 | Watertight mixture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63297445A true JPS63297445A (en) | 1988-12-05 |
| JPH0547582B2 JPH0547582B2 (en) | 1993-07-19 |
Family
ID=15173532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13636887A Granted JPS63297445A (en) | 1987-05-29 | 1987-05-29 | Watertight mixture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63297445A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS647410A (en) * | 1987-06-30 | 1989-01-11 | Showa Electric Wire & Cable Co | Water-sealed ow wire |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54120657A (en) * | 1978-03-14 | 1979-09-19 | Dainippon Ink & Chem Inc | Polyvinyl chloride resin composition |
| JPS5573744A (en) * | 1978-11-30 | 1980-06-03 | Sumitomo Bakelite Co Ltd | Flame-retardant resin composition |
| JPS5622335A (en) * | 1979-07-31 | 1981-03-02 | Dainippon Ink & Chem Inc | Heat-resisting plasticizer |
| JPS5692940A (en) * | 1979-12-27 | 1981-07-28 | Sumitomo Bakelite Co Ltd | Flame-retardant thermoplastic resin composition |
| JPS6162547A (en) * | 1984-09-04 | 1986-03-31 | Mitsubishi Kasei Vinyl Co | Vinyl chloride resin composition and its production |
-
1987
- 1987-05-29 JP JP13636887A patent/JPS63297445A/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54120657A (en) * | 1978-03-14 | 1979-09-19 | Dainippon Ink & Chem Inc | Polyvinyl chloride resin composition |
| JPS5573744A (en) * | 1978-11-30 | 1980-06-03 | Sumitomo Bakelite Co Ltd | Flame-retardant resin composition |
| JPS5622335A (en) * | 1979-07-31 | 1981-03-02 | Dainippon Ink & Chem Inc | Heat-resisting plasticizer |
| JPS5692940A (en) * | 1979-12-27 | 1981-07-28 | Sumitomo Bakelite Co Ltd | Flame-retardant thermoplastic resin composition |
| JPS6162547A (en) * | 1984-09-04 | 1986-03-31 | Mitsubishi Kasei Vinyl Co | Vinyl chloride resin composition and its production |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS647410A (en) * | 1987-06-30 | 1989-01-11 | Showa Electric Wire & Cable Co | Water-sealed ow wire |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0547582B2 (en) | 1993-07-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |