JP2002163939A - Cable with covering layer containing microcapsule containing plasticizer - Google Patents
Cable with covering layer containing microcapsule containing plasticizerInfo
- Publication number
- JP2002163939A JP2002163939A JP2000358868A JP2000358868A JP2002163939A JP 2002163939 A JP2002163939 A JP 2002163939A JP 2000358868 A JP2000358868 A JP 2000358868A JP 2000358868 A JP2000358868 A JP 2000358868A JP 2002163939 A JP2002163939 A JP 2002163939A
- Authority
- JP
- Japan
- Prior art keywords
- cable
- plasticizer
- coating layer
- microcapsule
- microcapsules
- 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.)
- Withdrawn
Links
- 239000003094 microcapsule Substances 0.000 title claims abstract description 67
- 239000004014 plasticizer Substances 0.000 title claims abstract description 52
- 239000011247 coating layer Substances 0.000 claims description 52
- 239000010410 layer Substances 0.000 claims description 29
- 239000012528 membrane Substances 0.000 claims description 9
- 239000002344 surface layer Substances 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 230000007423 decrease Effects 0.000 abstract description 8
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 229920005989 resin Polymers 0.000 description 17
- 239000011347 resin Substances 0.000 description 17
- 239000004800 polyvinyl chloride Substances 0.000 description 14
- 229920000915 polyvinyl chloride Polymers 0.000 description 13
- 230000006866 deterioration Effects 0.000 description 9
- 239000013307 optical fiber Substances 0.000 description 7
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 239000011230 binding agent Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- -1 phthalate ester Chemical class 0.000 description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 3
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010556 emulsion polymerization method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical group C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-N o-dicarboxybenzene Natural products OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000008029 phthalate plasticizer Substances 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 125000005591 trimellitate group Chemical group 0.000 description 1
Landscapes
- Insulated Conductors (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電力ケーブル、通
信ケーブル、光ファイバケーブル等の被覆層に係り、特
に被覆層中に可塑剤入りマイクロカプセルを含有したケ
ーブルに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating layer such as a power cable, a communication cable and an optical fiber cable, and more particularly to a cable containing a microcapsule containing a plasticizer in the coating layer.
【０００２】[0002]
【従来の技術】電力ケーブル、通信ケーブル、光ファイ
バケーブル等のケーブルの被覆には一般的にポリ塩化ビ
ニル（ＰＶＣ）樹脂が多く用いられている。このＰＶＣ
樹脂は単独では硬いため、可撓性を必要とするケーブル
に用いるには適していない。そこで通常柔軟性を付与す
るためにエステル系の可塑剤を２０〜３０％程度添加し
ている。またこの可塑剤はケーブルが布設された後にＰ
ＶＣ樹脂の劣化により硬度が上昇することを防ぐ役割も
果たしている。2. Description of the Related Art In general, polyvinyl chloride (PVC) resin is often used for coating cables such as power cables, communication cables, and optical fiber cables. This PVC
Since the resin alone is hard, it is not suitable for use in a cable requiring flexibility. Therefore, usually, about 20 to 30% of an ester plasticizer is added to impart flexibility. Also, this plasticizer is used after the cable is laid.
It also serves to prevent the hardness from increasing due to the deterioration of the VC resin.
【０００３】[0003]
【発明が解決しようとする課題】ところで、上記のよう
な従来の技術には、次のような解決すべき課題があっ
た。即ち、ＰＶＣ樹脂に添加した可塑剤は主にケーブル
の布設環境における熱の影響で揮発し、ケーブル布設後
年月が経つにつれて可塑剤含有量が減少してゆく。この
ように可塑剤が減少すると、ＰＶＣ樹脂が硬くなり、や
がてはクラックが発生し、極端な場合は被覆層が剥落
し、導体や光ファイバ心線等のケーブルコアが露出する
ことも考えられる。例えば電力ケーブルの場合には導体
が露出すれば重大な電気事故につながる虞も出てくる
し、通信ケーブルの場合は混信や光ファイバケーブルの
場合には光ファイバの断線等の不都合が生じる虞もあ
る。However, the above-mentioned prior art has the following problems to be solved. That is, the plasticizer added to the PVC resin volatilizes mainly due to the influence of heat in the cable laying environment, and the plasticizer content decreases as time passes after the cable is laid. When the amount of the plasticizer decreases in this manner, the PVC resin becomes hard, and eventually cracks occur. In an extreme case, the coating layer may peel off, and the cable core such as a conductor or an optical fiber core may be exposed. For example, in the case of a power cable, if the conductor is exposed, there is a risk that a serious electrical accident may occur, and in the case of a communication cable, interference such as interference or in the case of an optical fiber cable, a problem such as disconnection of an optical fiber may occur. .
【０００４】可塑剤としては一般的にフタル酸エステル
系可塑剤が用いられているが、これに代わるものとして
より高い温度でも揮発しにくいトリメリト酸エステル系
可塑剤を用いることも行われている。しかし、フタル酸
エステル系可塑剤にしろトリメリト酸エステル系可塑剤
にしろ、硬度上昇を防ぐために配合量を多くするとＰＶ
Ｃ樹脂のケーブル被覆に必要な基礎物性を満足しなくな
り、また、ケーブル布設後に可塑剤が被覆層表面に浸出
してくるなどの不都合が見られた。As a plasticizer, a phthalate plasticizer is generally used. As an alternative to this, a trimellitate plasticizer which hardly volatilizes even at a higher temperature is used. However, regardless of the phthalate ester plasticizer or trimellitate ester plasticizer, if the blending amount is increased to prevent an increase in hardness, PV
The basic properties required for coating the cable with the C resin were not satisfied, and inconveniences such as the plasticizer leaching to the surface of the coating layer after the cable was laid were observed.
【０００５】本発明はケーブルを布設した後でもＰＶＣ
樹脂被覆層中に可塑剤を経時的に補給することにより、
従来のように可塑剤が減少して生じる被覆層の劣化を長
期間に亘って抑制することができるケーブルを提供する
ものである。[0005] The present invention relates to PVC
By replenishing the plasticizer over time in the resin coating layer,
An object of the present invention is to provide a cable capable of suppressing deterioration of a coating layer caused by a decrease in a plasticizer as in the related art over a long period of time.
【０００６】[0006]
【課題を解決するための手段】本発明は以上の点を解決
するため次の構成を採用する。The present invention employs the following structure to solve the above problems.
【０００７】〈構成１〉ケーブルの被覆層中に可塑剤を
内包したマイクロカプセルを含有したことを特徴とする
可塑剤入りマイクロカプセル含有被覆層付ケーブル。<Structure 1> A cable with a microcapsule-containing covering layer containing a plasticizer, wherein the covering layer of the cable contains microcapsules containing a plasticizer.
【０００８】〈構成２〉前記マイクロカプセルの膜壁が
多孔質であることを特徴とする構成１記載の可塑剤入り
マイクロカプセル含有被覆層付ケーブル。<Structure 2> The cable with a coating layer containing a microcapsule containing a plasticizer according to Structure 1, wherein the membrane wall of the microcapsule is porous.
【０００９】〈構成３〉前記マイクロカプセルをケーブ
ル被覆層の表層部付近により多く含有させたことを特徴
とする構成１または構成２記載の可塑剤入りマイクロカ
プセル含有被覆層付ケーブル。<Structure 3> The cable with a microcapsule-containing coating layer containing a plasticizer according to Structure 1 or 2, wherein the microcapsules are contained more in the vicinity of the surface layer of the cable coating layer.
【００１０】〈構成４〉ケーブル被覆層を内層及び外層
とからなる２層構造とし、前記ケーブル被覆層の外層中
に可塑剤を内包したマイクロカプセルを含有したことを
特徴とする可塑剤入りマイクロカプセル含有被覆層付ケ
ーブル。<Structure 4> A microcapsule containing a plasticizer, wherein the cable coating layer has a two-layer structure including an inner layer and an outer layer, and the outer layer of the cable coating layer contains microcapsules containing a plasticizer. Cable with containing coating layer.
【００１１】〈構成５〉前記外層の厚さを２〜２０μｍ
としたことを特徴とする構成４記載の可塑剤入りマイク
ロカプセル含有被覆層付ケーブル。<Structure 5> The thickness of the outer layer is 2 to 20 μm.
The cable with a microcapsule-containing coating layer containing a plasticizer according to configuration 4, wherein:
【００１２】〈構成６〉前記マイクロカプセルの膜壁が
多孔質であることを特徴とする構成４または構成５記載
の可塑剤入りマイクロカプセル含有被覆層付ケーブル。<Structure 6> The cable with a coating layer containing a microcapsule containing a plasticizer according to Structure 4 or Structure 5, wherein the membrane wall of the microcapsule is porous.
【００１３】[0013]
【発明の実施の形態】以下、本発明の実施の形態を図面
を用いて説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１４】図１は本発明の一実施例を説明するケーブ
ルの断面図である。図１において、１はＰＶＣ樹脂によ
るケーブル被覆層であり、この被覆層１は導体あるいは
光ファイバ心線等のケーブルコア部２の周囲に被覆され
ている。そしてこの被覆層１中に可塑剤入りマイクロカ
プセル３が分散含有されている。FIG. 1 is a sectional view of a cable for explaining an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a cable coating layer made of a PVC resin, and the coating layer 1 is coated around a cable core 2 such as a conductor or an optical fiber core. The microcapsules 3 containing the plasticizer are dispersed and contained in the coating layer 1.
【００１５】このようにマイクロカプセルが含有された
被覆層を有するケーブルが布設され、年月が経過する
と、柔軟性を付与するために添加された可塑剤が揮発
し、被覆層が劣化して硬くなってくるが、マイクロカプ
セルの膜壁も年月と共に劣化してくるために、その膜壁
が破壊され、内包された可塑剤が徐々に被覆層中に滲み
出してくる。その結果揮発して減少した可塑剤の分をマ
イクロカプセルから補給されることになり、長期間被覆
層の柔軟性が損なわれずに被覆層の劣化を抑制すること
ができる。As described above, a cable having a coating layer containing microcapsules is laid, and as time passes, the plasticizer added to impart flexibility volatilizes, and the coating layer deteriorates and becomes hard. However, since the film wall of the microcapsule also deteriorates with age, the film wall is broken, and the contained plasticizer gradually seeps into the coating layer. As a result, the amount of the plasticizer which has been volatilized and reduced is replenished from the microcapsules, and the deterioration of the coating layer can be suppressed without impairing the flexibility of the coating layer for a long period of time.
【００１６】ここで本実施例に用いられるマイクロカプ
セル３の製造方法について述べる。本実施例において
は、乳化重合法を用いてマイクロカプセルを製造した
が、もちろん本方法に限定されるわけではなく、本発明
の目的を達成するものであればどのような方法でマイク
ロカプセルを作成してもかまわない。Here, a method of manufacturing the microcapsules 3 used in this embodiment will be described. In the present example, microcapsules were manufactured by using the emulsion polymerization method. However, it is needless to say that the present invention is not limited to this method, and the microcapsules can be formed by any method that achieves the object of the present invention. It does not matter.
【００１７】乳化重合法は可塑剤のフタル酸エステルを
芯物質として、この芯物質４０部と膜壁となるアクリル
ニトリルモノマー１００部、重合反応の開始剤であるベ
ンゾイルパーオキサイド２部、架橋剤としてジビニルベ
ンゼン８部を混合溶解した。この混合溶液を非イオン系
の界面活性剤中に滴下し、ホモジナイザーを用いて撹
拌、乳化し、８５℃で２時間重合させ、直径１μｍのマ
イクロカプセルを得た。In the emulsion polymerization method, a phthalic acid ester as a plasticizer is used as a core substance, 40 parts of this core substance and 100 parts of acrylonitrile monomer to be a film wall, 2 parts of benzoyl peroxide which is an initiator of a polymerization reaction, and a crosslinking agent Eight parts of divinylbenzene were mixed and dissolved. This mixed solution was dropped into a nonionic surfactant, stirred and emulsified using a homogenizer, and polymerized at 85 ° C. for 2 hours to obtain microcapsules having a diameter of 1 μm.
【００１８】このマイクロカプセルを含有させたＰＶＣ
樹脂と、一方比較例としてマイクロカプセルを含有させ
ていないＰＶＣ樹脂の試験用シートを作成してその劣化
の程度を測定した。マイクロカプセル含有シートは、Ｐ
ＶＣ樹脂１００重量部、可塑剤３０重量部を混合したも
のにマイクロカプセル１０重量部を混合、撹拌して作成
した。このシートを光学顕微鏡により観察したところ、
マイクロカプセルはシート中にほぼ均一に分散されてい
た。PVC containing the microcapsules
Test sheets of the resin and a PVC resin containing no microcapsules as a comparative example were prepared, and the degree of deterioration was measured. The sheet containing microcapsules is P
10 parts by weight of microcapsules were mixed with a mixture of 100 parts by weight of a VC resin and 30 parts by weight of a plasticizer, and the mixture was stirred. When this sheet was observed with an optical microscope,
The microcapsules were almost uniformly dispersed in the sheet.
【００１９】この実施例及び比較例のシートをギヤオー
ブンの中に入れ、１２０℃の温度で加熱し、熱老化させ
た後に引張試験を行い伸びの劣化の状況を測定した。そ
の結果を図２に示す。Ａが本実施例の結果であり、Ｂが
比較例の結果である。なお比較例はマイクロカプセルを
含有していない他は本実施例と同様の条件で作成した通
常用いられるケーブル被覆用ＰＶＣ樹脂である。The sheets of Examples and Comparative Examples were placed in a gear oven, heated at a temperature of 120 ° C., aged, and then subjected to a tensile test to measure the deterioration of elongation. The result is shown in FIG. A is the result of the present example, and B is the result of the comparative example. The comparative example is a commonly used PVC resin for cable coating prepared under the same conditions as in this example except that microcapsules are not contained.
【００２０】図２に示すように、本実施例のマイクロカ
プセルを含有したシートは３０日程度まで伸びの低下が
観測されず、３０日を過ぎても低下の程度は緩やかであ
るが、マイクロカプセルを含有していない通常のシート
は１５日を経過した頃から伸びの低下が急速に進行して
いるのがわかる。As shown in FIG. 2, in the sheet containing the microcapsules of this example, the decrease in elongation was not observed until about 30 days, and the degree of the decrease was gradual even after 30 days. It can be seen that the decrease in elongation of the normal sheet containing no swiftly progressed from about 15 days later.
【００２１】実際に前記したマイクロカプセルをＰＶＣ
樹脂被覆層中に含有させたケーブルを作成し、そのケー
ブルを１２０℃で３０日間熱劣化させて被覆層の硬度を
測定したところマイクロカプセルを含有していないケー
ブルの場合は６５０〜７５０であったのに対して、マイ
クロカプセル含有被覆層付ケーブルは同一条件で熱劣化
試験を行ったところ、硬度３００〜４００であり、熱劣
化試験を行う前の硬度と変化がなかった。なお、硬度の
測定にはケーブル被覆用硬度測定器ショウチェッカー
（昭和電線電纜（株）登録商標）を用いて行った。Actually, the above-mentioned microcapsules are made of PVC.
A cable contained in the resin coating layer was prepared, the cable was thermally degraded at 120 ° C. for 30 days, and the hardness of the coating layer was measured. The result was 650 to 750 in the case of a cable containing no microcapsules. On the other hand, when the heat deterioration test was performed on the cable with the microcapsule-containing coating layer under the same conditions, the hardness was 300 to 400, and there was no change from the hardness before the heat deterioration test. The hardness was measured using a hardness checker for cable coating, Show Checker (registered trademark of Showa Electric Cable Co., Ltd.).
【００２２】ところで、マイクロカプセルの膜壁を例え
ば多数のピンホールを設けるなどして多孔質にすると、
ケーブル布設中に徐々にピンホールから可塑剤が被覆層
中に滲み出し、揮発による可塑剤の不足分を連続的に補
給できるのでより布設寿命の長いケーブルを提供するこ
とができる。By the way, when the membrane wall of the microcapsule is made porous by providing a large number of pinholes, for example,
The plasticizer gradually leaks out from the pinhole into the coating layer during cable installation, and the shortage of the plasticizer due to volatilization can be continuously supplied, so that a cable having a longer installation life can be provided.
【００２３】続いて他の実施例について説明する。な
お、図１と同一箇所は同一番号で表示することにし、以
後も同様とする。図３は本発明の他の実施例を説明する
ケーブルの断面図である。図３において、マイクロカプ
セル３は被覆層１の表層部により多く含有させている。
これは被覆層の表層部ほど可塑剤の揮発が多いために可
塑剤の含有量が減少し、被覆層の硬度が上昇し、劣化が
進行しやすくなることを防止するためである。本実施例
で用いられるマイクロカプセルも図１で説明したマイク
ロカプセルと同様に製造したものを用いればよい。ま
た、マイクロカプセルの膜壁を多孔質にして可塑剤を連
続的に被覆層中に滲み出すようにすることも前記した実
施例と同様可能である。Next, another embodiment will be described. The same parts as those in FIG. 1 are denoted by the same numbers, and the same applies hereinafter. FIG. 3 is a sectional view of a cable illustrating another embodiment of the present invention. In FIG. 3, the microcapsules 3 are contained more in the surface layer of the coating layer 1.
This is to prevent the plasticizer content from decreasing as the surface layer portion of the coating layer is more volatilized, thereby reducing the content of the plasticizer, increasing the hardness of the coating layer, and preventing the deterioration from easily progressing. The microcapsules used in this embodiment may be those manufactured in the same manner as the microcapsules described in FIG. Further, it is possible to make the membrane wall of the microcapsule porous so that the plasticizer continuously seeps into the coating layer, similarly to the above-described embodiment.
【００２４】さらに他の実施例についても説明する。図
４は本発明のさらに他の実施例を説明するケーブルの断
面図である。図４は、ケーブルの被覆層を２層構造にし
た例を示したものである。図３の実施例で説明したよう
に、被覆層中の可塑剤は被覆層の表層部ほど揮発しやす
く、可塑剤の減少が多いために、本実施例では被覆層を
内層１と外層４との２層構造とし、その外層４にマイク
ロカプセル３を含有させたものである。このように被覆
層を２層構造にして、その外層にマイクロカプセルを含
有させる場合、通常のＰＶＣ樹脂層を２層とし、その外
層に図１の実施例と同様な方法で作成したマイクロカプ
セルを含有させても良いが、次のような方法でマイクロ
カプセル入りの外層を設けても良い。Still another embodiment will be described. FIG. 4 is a sectional view of a cable illustrating still another embodiment of the present invention. FIG. 4 shows an example in which the coating layer of the cable has a two-layer structure. As described in the embodiment of FIG. 3, the plasticizer in the coating layer is more likely to volatilize in the surface layer of the coating layer, and the plasticizer decreases more. Therefore, in this embodiment, the coating layer is formed by the inner layer 1 and the outer layer 4. And the outer layer 4 contains the microcapsules 3. In the case where the coating layer has a two-layer structure and the outer layer contains microcapsules, the ordinary PVC resin layer has two layers, and the outer layer has microcapsules formed in the same manner as in the embodiment of FIG. Although it may be contained, an outer layer containing microcapsules may be provided by the following method.
【００２５】即ち、ＰＶＣ樹脂を１０重量％の濃度で溶
媒であるテトラヒドロフラン（ＴＨＦ）中に溶解させて
得た溶液をバインダーとし、このバインダー液を７０重
量部、図１の実施例と同様な方法で作成したマイクロカ
プセルを３０重量部混合して溶液を作成する。この溶液
を予め作成した内層としてＰＶＣ樹脂を被覆したケーブ
ルの外周に塗布する。その後バインダーの溶媒を乾燥さ
せるとマイクロカプセルを含有した被覆層（外層）が形
成される。この時、マイクロカプセルの膜壁のポリアク
リロニトリルはＴＨＦに溶解しないため、マイクロカプ
セルはバインダー液と混合しても膜壁が破壊されること
はない。That is, a solution obtained by dissolving a PVC resin at a concentration of 10% by weight in tetrahydrofuran (THF) as a solvent is used as a binder, and 70 parts by weight of the binder solution is used in the same manner as in the embodiment of FIG. A solution is prepared by mixing 30 parts by weight of the microcapsules prepared in the above. This solution is applied to the outer periphery of a cable coated with a PVC resin as an inner layer prepared in advance. Thereafter, when the solvent of the binder is dried, a coating layer (outer layer) containing the microcapsules is formed. At this time, since polyacrylonitrile on the membrane wall of the microcapsule does not dissolve in THF, the membrane wall of the microcapsule is not broken even when mixed with a binder solution.
【００２６】なお、外層の厚さは２μｍから２０μｍの
範囲が望ましい。その理由は、２μｍ未満ではマイクロ
カプセルの含有量が少な過ぎ本発明の効果を得ることが
できないからであり、２０μｍを超えても効果に変化が
見られなくなるからである。このように可塑剤が揮発し
やすいケーブル被覆層の表層部（外層）にのみ可塑剤を
内包したマイクロカプセルを含有させた場合には、被覆
層全体にマイクロカプセルを含有させるよりも安価にケ
ーブルを作成できるという利点もある。The thickness of the outer layer is desirably in the range of 2 μm to 20 μm. The reason is that if it is less than 2 μm, the effect of the present invention cannot be obtained because the content of the microcapsules is too small, and if it exceeds 20 μm, no change is observed in the effect. When the microcapsules containing the plasticizer are included only in the surface layer (outer layer) of the cable coating layer in which the plasticizer is easily volatilized, the cable can be manufactured at a lower cost than the microcapsules contained in the entire coating layer. There is also the advantage that it can be created.
【００２７】なお、本実施例においてもマイクロカプセ
ルの膜壁を多孔質にして可塑剤を連続的に被覆層（外
層）中に滲み出すようにすることも前記した実施例と同
様可能である。In this embodiment, it is also possible to make the membrane wall of the microcapsules porous so that the plasticizer continuously seeps into the coating layer (outer layer) in the same manner as in the above embodiment.
【００２８】[0028]
【発明の効果】以上のように、本発明は可塑剤を内包し
たマイクロカプセルをＰＶＣ樹脂からなるケーブル被覆
層に含有させたので、ケーブル布設後にＰＶＣ樹脂が劣
化し硬度が上昇するような経年変化が生じたとしてもマ
イクロカプセルから滲み出した可塑剤により劣化を抑制
することが可能なケーブルを提供することができる。As described above, according to the present invention, microcapsules containing a plasticizer are contained in a cable coating layer made of PVC resin. It is possible to provide a cable capable of suppressing the deterioration due to the plasticizer oozing out of the microcapsules even if the occurrence of the cracks.
【図１】本発明の一実施例を説明するケーブルの断面図
である。FIG. 1 is a sectional view of a cable illustrating an embodiment of the present invention.
【図２】本発明の実施例の測定結果を説明する図であ
る。FIG. 2 is a diagram illustrating measurement results of an example of the present invention.
【図３】本発明の他の実施例を説明するケーブルの断面
図である。FIG. 3 is a sectional view of a cable illustrating another embodiment of the present invention.
【図４】本発明のさらに他の実施例を説明するケーブル
の断面図である。FIG. 4 is a sectional view of a cable illustrating still another embodiment of the present invention.
１ 被覆層若しくは被覆層の内層 ２ 導体あるいは光ファイバ心線等のケーブルコ
ア部 ３ マイクロカプセル ４ 被覆層の外層Reference Signs List 1 coating layer or inner layer of coating layer 2 cable core part such as conductor or optical fiber core 3 microcapsule 4 outer layer of coating layer
フロントページの続き (72)発明者 岩満 明 神奈川県川崎市川崎区小田栄２丁目１番１ 号 昭和電線電纜株式会社内 (72)発明者 平井 進 神奈川県川崎市川崎区小田栄２丁目１番１ 号 昭和電線電纜株式会社内 Ｆターム(参考） 2H001 DD23 KK17 KK22 PP01 5G313 AB02 AC02 AC07 AD03 AE03 AE10 Continuation of the front page (72) Inventor Akira Iwamitsu 2-1-1 Oda Sakae, Kawasaki-ku, Kawasaki City, Kanagawa Prefecture Inside Showa Electric Wire & Cable Co., Ltd. (72) Susumu Hirai 2-1-1 Oda Sakae, Kawasaki-ku, Kawasaki City, Kanagawa Prefecture No. 1 Showa Electric Wire & Cable Co., Ltd. F-term (reference) 2H001 DD23 KK17 KK22 PP01 5G313 AB02 AC02 AC07 AD03 AE03 AE10
Claims (6)
マイクロカプセルを含有したことを特徴とする可塑剤入
りマイクロカプセル含有被覆層付ケーブル。1. A cable with a microcapsule-containing coating layer containing a plasticizer, wherein the coating layer of the cable contains microcapsules containing a plasticizer.
あることを特徴とする請求項１記載の可塑剤入りマイク
ロカプセル含有被覆層付ケーブル。2. The cable with a coating layer containing a microcapsule containing a plasticizer according to claim 1, wherein the membrane wall of the microcapsule is porous.
の表層部付近により多く含有させたことを特徴とする請
求項１または請求項２記載の可塑剤入りマイクロカプセ
ル含有被覆層付ケーブル。3. The cable with a microcapsule-containing coating layer containing a plasticizer according to claim 1, wherein the microcapsules are contained more in the vicinity of the surface layer of the cable coating layer.
る２層構造とし、前記ケーブル被覆層の外層中に可塑剤
を内包したマイクロカプセルを含有したことを特徴とす
る可塑剤入りマイクロカプセル含有被覆層付ケーブル。4. A microcapsule-containing coating containing a plasticizer, wherein the cable coating layer has a two-layer structure comprising an inner layer and an outer layer, and a microcapsule containing a plasticizer is contained in an outer layer of the cable coating layer. Layered cable.
とを特徴とする請求項４記載の可塑剤入りマイクロカプ
セル含有被覆層付ケーブル。5. The cable with a coating layer containing a microcapsule containing a plasticizer according to claim 4, wherein the thickness of the outer layer is 2 to 20 μm.
あることを特徴とする請求項４または請求項５記載の可
塑剤入りマイクロカプセル含有被覆層付ケーブル。6. The cable with a coating layer containing a microcapsule containing a plasticizer according to claim 4, wherein the membrane wall of the microcapsule is porous.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000358868A JP2002163939A (en) | 2000-11-27 | 2000-11-27 | Cable with covering layer containing microcapsule containing plasticizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000358868A JP2002163939A (en) | 2000-11-27 | 2000-11-27 | Cable with covering layer containing microcapsule containing plasticizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002163939A true JP2002163939A (en) | 2002-06-07 |
Family
ID=18830704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000358868A Withdrawn JP2002163939A (en) | 2000-11-27 | 2000-11-27 | Cable with covering layer containing microcapsule containing plasticizer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002163939A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106098216A (en) * | 2016-08-24 | 2016-11-09 | 嘉兴多角电线电缆有限公司 | A kind of digital communication and transmission cable |
| CN109791819A (en) * | 2017-05-22 | 2019-05-21 | 韩国电力公社 | Self-extinguishment power cable and its manufacturing method with microcapsules |
| KR20200012468A (en) * | 2018-07-27 | 2020-02-05 | 한국과학기술연구원 | Self-healing silicon insulator and manufacturing method for thereof |
| WO2020066974A1 (en) * | 2018-09-27 | 2020-04-02 | 富士フイルム株式会社 | Resin composition, film, multilayer body, bonded structure, method for producing multilayer body, and method for producing bonded structure |
-
2000
- 2000-11-27 JP JP2000358868A patent/JP2002163939A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106098216A (en) * | 2016-08-24 | 2016-11-09 | 嘉兴多角电线电缆有限公司 | A kind of digital communication and transmission cable |
| CN109791819A (en) * | 2017-05-22 | 2019-05-21 | 韩国电力公社 | Self-extinguishment power cable and its manufacturing method with microcapsules |
| CN109791819B (en) * | 2017-05-22 | 2021-06-29 | 韩国电力公社 | Self-extinguishing power cable with microcapsules and manufacturing method thereof |
| KR20200012468A (en) * | 2018-07-27 | 2020-02-05 | 한국과학기술연구원 | Self-healing silicon insulator and manufacturing method for thereof |
| KR102095115B1 (en) | 2018-07-27 | 2020-03-30 | 한국전력공사 | Self-healing silicon insulator and manufacturing method for thereof |
| WO2020066974A1 (en) * | 2018-09-27 | 2020-04-02 | 富士フイルム株式会社 | Resin composition, film, multilayer body, bonded structure, method for producing multilayer body, and method for producing bonded structure |
| JPWO2020066974A1 (en) * | 2018-09-27 | 2021-09-24 | 富士フイルム株式会社 | Resin composition, membrane, laminate, bonded structure, method of manufacturing the laminate and method of manufacturing the bonded structure |
| JP7057432B2 (en) | 2018-09-27 | 2022-04-19 | 富士フイルム株式会社 | Resin composition, film, laminated body, bonded structure, manufacturing method of laminated body and manufacturing method of bonded structure |
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