JPH02281504A - Tracking resistant tape or sheet - Google Patents
Tracking resistant tape or sheetInfo
- Publication number
- JPH02281504A JPH02281504A JP1103030A JP10303089A JPH02281504A JP H02281504 A JPH02281504 A JP H02281504A JP 1103030 A JP1103030 A JP 1103030A JP 10303089 A JP10303089 A JP 10303089A JP H02281504 A JPH02281504 A JP H02281504A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- parts
- pts
- tracking
- magnesium hydroxide
- 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
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims abstract description 21
- 239000000347 magnesium hydroxide Substances 0.000 claims abstract description 21
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims abstract description 21
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims abstract description 15
- 229910052751 metal Inorganic materials 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 15
- 229920002367 Polyisobutene Polymers 0.000 claims abstract description 14
- 230000004927 fusion Effects 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 7
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 7
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 7
- 229920005549 butyl rubber Polymers 0.000 claims abstract description 6
- FYYHWMGAXLPEAU-OUBTZVSYSA-N magnesium-25 atom Chemical group [25Mg] FYYHWMGAXLPEAU-OUBTZVSYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 7
- -1 polyethylene Polymers 0.000 abstract description 5
- 239000004698 Polyethylene Substances 0.000 abstract description 3
- 229920000573 polyethylene Polymers 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 13
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 10
- 239000000853 adhesive Substances 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 4
- 239000012790 adhesive layer Substances 0.000 description 4
- 239000006229 carbon black Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000010186 staining Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- QLZJUIZVJLSNDD-UHFFFAOYSA-N 2-(2-methylidenebutanoyloxy)ethyl 2-methylidenebutanoate Chemical compound CCC(=C)C(=O)OCCOC(=O)C(=C)CC QLZJUIZVJLSNDD-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 229910021446 cobalt carbonate Inorganic materials 0.000 description 1
- ZOTKGJBKKKVBJZ-UHFFFAOYSA-L cobalt(2+);carbonate Chemical compound [Co+2].[O-]C([O-])=O ZOTKGJBKKKVBJZ-UHFFFAOYSA-L 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000005042 ethylene-ethyl acrylate Substances 0.000 description 1
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〈従来の技術〉
本発明は耐トラッキング性を有する融着性絶縁テープま
たはシートに関するものである。DETAILED DESCRIPTION OF THE INVENTION <Prior Art> The present invention relates to a fusible insulating tape or sheet having anti-tracking properties.
〈産業上の利用分野〉
汚損地域においては、絶縁体表面が汚損され、その汚損
物が湿潤状態となったときに漏れ電流が流れ、該漏れ′
＠流に基づくジュール熱によって水分が蒸発し、その漏
れ電流路中のある局所の蒸発が激しく生じ、その箇所が
乾燥してしまってｔ流路が遮断され、この遮断箇所で放
電が発生して当該局所の絶縁体表面が炭化し、以後、湿
潤・乾燥の繰返しにより、その炭化局所を中心として炭
化路が成長していく現象、すなわち、トラッキングが発
生し易い、従って、汚を員地域での高圧電線の絶縁処理
に使用するテープまたはシート（以下、単にテープとい
う）には耐トラッキング性を付与することが必要である
。<Industrial application field> In a contaminated area, when the surface of an insulator is contaminated and the contaminated material becomes wet, a leakage current flows, and the leakage current flows.
Moisture evaporates due to the Joule heat generated by the leakage current, and intense evaporation occurs in a certain local area in the leakage current path, which dries up and blocks the t flow path, causing electrical discharge to occur at this blocked point. The surface of the insulator in this area becomes carbonized, and thereafter, due to repeated wetting and drying, a carbonization path grows around the carbonized area, that is, tracking is likely to occur. It is necessary to impart tracking resistance to tapes or sheets (hereinafter simply referred to as tapes) used for insulating high-voltage wires.
〈解決しようとする課題〉
ところで、配電線の絶縁処理に用いるテープとして、ポ
リエチレンフィルム等の支持体の裏面に粘着性物質層（
ブチルゴム、高分子量ポリイソブチレン、低分子量ポリ
イソブチレン、低密度ポリエチレンを含む混和物の層）
を設けた融着性絶縁テープが周知である。而るに、従来
、この融着性絶縁テープの耐トラッキング性改善につい
ては、汚損を受ける表面でのみトラッキングが発生する
ことから、支持体にのみ耐トラッキング剤を添加し、粘
着性物質層には耐トラッキング剤を添加していない、し
かしながら、絶縁テープを数置にも巻付けて使用する場
合、その巻付層端部のテーパ面においては、テープの端
面が表出して粘着性物質層の端面も表出し、このテーパ
面の角度が急峻になると、そのテーパ面中に占める粘着
性物質層端面の割合が著しく大となり、この子−パ面に
沿ってのトラッキングに対し、粘着性物質層の耐トラッ
キング性も大きなウェイトで関与することになる。 而
して、粘着性物質層にも耐トラッキング剤を添加する必
要性が考えられるが、耐トラッキング剤の添加は粘着性
物質層の融着性低下を招来し、従って、テープ巻付層の
水密性の低下を来し、耐電圧性、絶縁抵抗等の他の電気
特性の低下が惹起される。<Problem to be solved> By the way, as a tape used for insulation treatment of power distribution lines, an adhesive material layer (
layer of admixture containing butyl rubber, high molecular weight polyisobutylene, low molecular weight polyisobutylene, low density polyethylene)
Fusible insulating tapes are well known. However, conventionally, in order to improve the tracking resistance of this fusible insulating tape, since tracking occurs only on the surface that is contaminated, an anti-tracking agent is added only to the support, and an anti-tracking agent is added to the adhesive layer. However, when using an insulating tape that does not contain an anti-tracking agent and is wound several times, the end surface of the tape will be exposed on the tapered surface of the end of the wound layer, and the end surface of the adhesive material layer will be exposed. When the angle of this tapered surface becomes steep, the proportion of the end surface of the adhesive material layer in the tapered surface becomes extremely large, and the tracking along this tapered surface is affected by the adhesive material layer. Tracking resistance also plays a large role. Therefore, it may be necessary to add an anti-tracking agent to the adhesive layer, but adding an anti-tracking agent causes a decrease in the adhesion of the adhesive layer, and therefore the watertightness of the tape wrapping layer. This causes a decrease in other electrical properties such as voltage resistance and insulation resistance.
本発明の目的は、融着性を充分に保有して、その融着層
にも優れた耐トラッキング性を付与できる融着性絶縁テ
ープを提供することにある。An object of the present invention is to provide a fusible insulating tape that has sufficient fusibility and can impart excellent tracking resistance to its fusing layer.
く課題を解決するための手段〉
本発明に係る耐トラッキング性テープは、熱可塑性樹脂
に耐トラッキング剤を添加した組成の支持体に、ブチル
ゴム６０〜１５０重量部、高分子量ポリイソブチレン３
０〜７０重量部、低分子量ポリイソブチレン２０〜１２
０重量部、低密度ポリエチレン５０〜１５０重量部を含
む混和物１００重量部に水酸化マグネシウム２０〜８０
重量部と金属炭酸塩２５重量部以下とを添加してなる混
和物の融着層を設けたことを特徴とする構成である。Means for Solving the Problems> The anti-tracking tape according to the present invention includes a support having a composition of a thermoplastic resin with an anti-tracking agent added thereto, 60 to 150 parts by weight of butyl rubber, and 3 parts by weight of high molecular weight polyisobutylene.
0-70 parts by weight, low molecular weight polyisobutylene 20-12
0 parts by weight of magnesium hydroxide and 100 parts by weight of a mixture containing 50 to 150 parts by weight of low density polyethylene.
This structure is characterized by providing a fusion layer of a mixture formed by adding 25 parts by weight or less of a metal carbonate and a metal carbonate.
上記の熱可塑性樹脂には所定の絶縁耐圧、絶縁抵抗並び
に機械的強度、特に引張り強度を有するものであれば適
宜のものを使用でき、例えば、ポリエチレン、エチレン
酢酸ビニル共重合体、エチレンエチルアクリレート共重
合体、エチレンプロピレン共重合体等を使用できる。Any suitable thermoplastic resin can be used as the thermoplastic resin as long as it has a specified dielectric strength, insulation resistance, and mechanical strength, especially tensile strength.For example, polyethylene, ethylene vinyl acetate copolymer, ethylene ethyl acrylate, etc. Polymers, ethylene propylene copolymers, etc. can be used.
上記高分子量ポリイソブチレンの分子量の粘度平均分子
量は３万以上、好ましくは約１４万であり、低分子量ポ
リイソブチレンの粘度平均分子量は３万未満であり、低
密度ポリエチレンの密度は通常０．９０〜０．９４であ
る。The viscosity average molecular weight of the above-mentioned high molecular weight polyisobutylene is 30,000 or more, preferably about 140,000, the viscosity average molecular weight of the low molecular weight polyisobutylene is less than 30,000, and the density of low density polyethylene is usually 0.90 to 0.90. It is 0.94.
上記の支持体、粘着性混和物には必要に応じて適宜、添
加剤を配合することができ、支持体にはカーボンブラッ
ク、フィラー等を、粘着性混和物には、カーボンブラッ
ク、粘着付与剤等をそれぞれ添加できる。Additives can be added to the above support and adhesive mixture as needed, and carbon black, fillers, etc. can be added to the support, and carbon black and tackifier can be added to the adhesive mixture. etc. can be added respectively.
本発明における粘着性物質のベース組成、すなわちブチ
ルゴム６０〜１５０重量部、高分子量ポリイソブチレン
３０〜７０重量部、低分子量ポリイソブチレン２０〜１
２０重量部、低密度ポリエチレン５０〜１５０重量部は
、絶縁テープの粘着性物質としての通常の配合である。The base composition of the adhesive substance in the present invention is 60 to 150 parts by weight of butyl rubber, 30 to 70 parts by weight of high molecular weight polyisobutylene, and 20 to 1 part by weight of low molecular weight polyisobutylene.
20 parts by weight and 50-150 parts by weight of low-density polyethylene are common formulations as adhesive materials for insulating tapes.
上記の金属炭酸塩には特に制約はなく、例えば、重質炭
酸カルシウム、炭酸マグネシウム、炭酸コバルト等を使
用できる。There are no particular restrictions on the metal carbonate, and for example, heavy calcium carbonate, magnesium carbonate, cobalt carbonate, etc. can be used.
本発明において、粘着性物質に水酸化マグネシウム並び
に金属炭酸塩を添加する理由は融着層に耐トラッキング
性を付与するためであり、水酸化マグネシウムと金属炭
酸塩とを併用する理由はこれらは耐トラッキング性の増
強に相乗効果があって耐トラッキング剤の添加量を少量
にしても充分な耐トラッキング性を保証し得るからであ
る。水酸化マグネシウムの添加量を２０〜８０重量部と
した理由は２０重量部以下では満足な耐トラッキング性
が得られ難く、８０重量部以上では融着力が顕著に低下
するからである。金属炭酸塩の添加量を２５重量部以下
に限定した理由は、２５重量部で耐トラッキング性の向
上効果が飽和してしまい、これ以上添加しても耐トラッ
キング性の向上を期待し得ず、か、えって融着力の低下
を来すことになるからである。In the present invention, the reason why magnesium hydroxide and metal carbonate are added to the adhesive substance is to impart tracking resistance to the adhesive layer, and the reason why magnesium hydroxide and metal carbonate are used together is that they are resistant to tracking. This is because there is a synergistic effect in enhancing tracking properties, and sufficient tracking resistance can be ensured even if the amount of anti-tracking agent added is small. The reason why the amount of magnesium hydroxide added is 20 to 80 parts by weight is that if it is less than 20 parts by weight, it is difficult to obtain satisfactory tracking resistance, and if it is more than 80 parts by weight, the fusion strength is significantly reduced. The reason why the amount of metal carbonate added was limited to 25 parts by weight or less is that the effect of improving tracking resistance is saturated at 25 parts by weight, and no improvement in tracking resistance can be expected even if more than 25 parts by weight is added. In fact, this may even result in a decrease in the fusion strength.
本発明において、支持体に添加する耐トラッキング剤に
も水酸化マグネシウムと金属炭酸塩との両者を使用する
ことが好ましく、その配合は、熱可塑性樹脂１００重量
部に対し、水酸化マグネシウム３〜７０重量部、金属炭
酸塩２〜３０重量部である。水酸化マグネシウム３重量
部以下あるいは、金属炭酸塩２重量部以下では支持体に
満足な耐トラッキング性を付与し難く、水酸化マグネシ
ウム７０重量部以上と金属炭酸塩３０重量部以上では、
支持体の機械的強度、特に引張り強度が著しく低下して
しまう。In the present invention, it is preferable to use both magnesium hydroxide and metal carbonate as the anti-tracking agent added to the support, and the blending ratio is 3 to 70 parts by weight of magnesium hydroxide per 100 parts by weight of the thermoplastic resin. parts by weight, and 2 to 30 parts by weight of the metal carbonate. If magnesium hydroxide is less than 3 parts by weight or metal carbonate is less than 2 parts by weight, it is difficult to impart satisfactory tracking resistance to the support, and if magnesium hydroxide is 70 parts by weight or more and metal carbonate is 30 parts by weight or more,
The mechanical strength, especially the tensile strength, of the support is significantly reduced.
上記の水酸化マグネシウム、金属炭酸塩は、脂肪酸、脂
肪酸塩、チタネートカップリング剤、またはシランカッ
プリング剤等で表面処理したものが分散性等の面から好
ましい。The above-mentioned magnesium hydroxide and metal carbonate are preferably surface-treated with a fatty acid, a fatty acid salt, a titanate coupling agent, a silane coupling agent, etc. from the viewpoint of dispersibility.
〈実施例の説明〉
以下、本発明の実施例を比較例との対比のもとで説明す
る。<Description of Examples> Examples of the present invention will be described below in comparison with comparative examples.
実施例１〜３
ポリエチレン（密度０．９２〜０．９３Ｍ１１、 ４〜
２．７）１００重量部にカーボンブラック２重量部、水
酸化マグネシウム（脂肪酸で表面処理した平均粒径１．
０μｍの水酸化マグネシウム）３０重量部、重質炭酸カ
ルシウム１０重量部を添加して押出成形により厚さＯ，
１５ｍの支持体を作成した。他方、ブチルゴム１００重
量部、高分子量ポリイソブチレン（粘度平均分子量８１
０００〜１０００００）５０重量部、低分子量ポリイソ
ブチレン（粘度平均分子量８７００〜１２０００）６０
重量部、低密度ポリエチレン（密度０．９１〜０．９３
、ＭＩｏ、８〜１． ５） ８０重量部、カーボンブラ
ック２重量部からなるベース混和物１００重量部に炭酸
カルシウムを１０重量部、水酸化マグネシウムについて
は、２０．５０．８０重量部添加し、各混和物を厚さ０
．３５園に成形し、各成形体を上記の支持体に貼り合わ
せ、厚さ０．５閣の融着性ポリエチレンシートを得た。Examples 1-3 Polyethylene (density 0.92-0.93M11, 4-
2.7) 100 parts by weight, 2 parts by weight of carbon black, magnesium hydroxide (surface treated with fatty acid, average particle size 1.
30 parts by weight of magnesium hydroxide (0 μm) and 10 parts by weight of heavy calcium carbonate were extruded to a thickness of O,
A 15 m support was created. On the other hand, 100 parts by weight of butyl rubber, high molecular weight polyisobutylene (viscosity average molecular weight 81
000-100000) 50 parts by weight, low molecular weight polyisobutylene (viscosity average molecular weight 8700-12000) 60
Part by weight, low density polyethylene (density 0.91-0.93
, MIo, 8-1. 5) 10 parts by weight of calcium carbonate and 20.50.80 parts by weight of magnesium hydroxide were added to 100 parts by weight of a base mixture consisting of 80 parts by weight and 2 parts by weight of carbon black, and each mixture was made to a thickness of 0.
．． Each molded product was bonded to the above-mentioned support to obtain a fusible polyethylene sheet having a thickness of 0.5 mm.
比較例１並びに２
上記実施例に対し、水酸化マグネシウムの添加量を９０
重量部、１０重量部とした以外は実施例と同じとした。Comparative Examples 1 and 2 For the above examples, the amount of magnesium hydroxide added was 90%.
The parts by weight were the same as in the example except that the parts by weight were 10 parts by weight.
比較例３
上記実施例に対し、ベース混和物１００重量部に水酸化
マグネシウムのみを１５０重量部添加した以外は実施例
と同じとした。Comparative Example 3 This example was the same as the above example except that 150 parts by weight of magnesium hydroxide alone was added to 100 parts by weight of the base mixture.
これら実施別品並びに比較別品につき、融着性評価、Ａ
ＳＴＭ−傾斜平板法並びに塩水噴霧法による耐トラッキ
ング性評価を行ったところ、第１表の通りであった。た
だし、各性能の評価方法は次の通りである。For these different products and comparative products, weldability evaluation, A
Tracking resistance was evaluated using the STM-tilt plate method and the salt spray method, and the results were as shown in Table 1. However, the evaluation method for each performance is as follows.
く融着性の評価方法〉
巾１９閣の試料に２０％の伸びを与えた状態のまま直径
１５ａｓΦ、長さ２００ｍの硝子管にテープを同一円周
方向に重ね巻きし、最後の１巻は指で軽く押えつける０
巻き付け１０分放置後、テープ端末が容易にはがれたも
のを×、はがれなかったものをＯとした。Evaluation method for fusion adhesion〉 A sample with a width of 19 mm was stretched by 20%, and the tape was wrapped around a glass tube with a diameter of 15 as Φ and a length of 200 m in layers in the same circumferential direction. Press down lightly with your fingers0
After winding and leaving the tape for 10 minutes, those whose tape ends were easily peeled off were rated "X", and those whose tape ends were not peeled off were rated "O".
く耐トラッキング性の評価方法〉
（１）試料
厚さ０．５１１１１の各シートを厚さ６ａａ＋＋となる
ように重ね合わせ、その重ね目の存在する側面がトラッ
キング面になるようにした。Method for evaluating tracking resistance> (1) Sample sheets each having a thickness of 0.51111 were overlapped to a thickness of 6aa++, and the side surface where the overlap was present became the tracking surface.
（２）Ａ３７Ｍ傾斜平板法
ＡＳＴＭＤ−２３０３に準拠して行い、試料表面をシリ
コーンカーバイドのサンドベーパ（＃４２０）により研
摩した。汚損液には標準汚損液を使用し、２，５ＫＶを
初期電圧として昇圧し、最終電圧を測定し、そのときの
試料の表面状態を観察した。(2) A37M tilted plate method It was carried out in accordance with ASTM D-2303, and the sample surface was polished with a silicone carbide sand vapor (#420). A standard staining liquid was used as the staining liquid, the initial voltage was increased to 2.5 KV, the final voltage was measured, and the surface condition of the sample at that time was observed.
（３）塩化噴霧法 ＪＣＡＡＢ−００３に準じて行った。(3) Chloride spray method It was carried out according to JCAAB-003.
第１表における実施例１〜３と比較例３との対比から明
らかな通り、水酸化マグネシウムと炭酸カルシウムとの
双方を融着層に添加することによって、水酸化マグネシ
ウムのみの単独添加に較べて少ない添加量で優れた耐ト
ラッキング性を付与でき、融着性を充分に保持できる。As is clear from the comparison between Examples 1 to 3 and Comparative Example 3 in Table 1, by adding both magnesium hydroxide and calcium carbonate to the fusion layer, compared to adding only magnesium hydroxide alone. Excellent tracking resistance can be imparted with a small addition amount, and fusion properties can be sufficiently maintained.
また、炭酸カルシウムとの併用下でも、比較例１がら、
水酸化マグネシウムを９０重量部も添加すれば、満足な
融着性を保証し得す、また、比較例２から、１０重量部
といった少量であれば、耐トラッキング性が不足し、水
酸化マグネシウムの有効な添加範囲が２０〜８０重量部
であることが明らかである。In addition, even when used in combination with calcium carbonate, unlike Comparative Example 1,
If as much as 90 parts by weight of magnesium hydroxide is added, satisfactory fusion properties can be guaranteed.Also, from Comparative Example 2, if the amount is as small as 10 parts by weight, the tracking resistance will be insufficient, and the It is clear that the effective addition range is 20 to 80 parts by weight.
〈発明の効果〉
上述した通り、本発明に係る融着性絶縁テープにおいて
は、支持体に耐トラッキング性を付与するのみならず、
融着層にも融着性を充分に保持させて優れた耐トラッキ
ング性を付与しているから、該テープ巻付層の端部のテ
ーパ面においてもトラッキング損傷をよく防止でき、か
つ融着性を充分に保持し得て水密性が良好であるので、
絶縁耐圧、絶縁抵抗等の他の電気性能も充分に保証でき
る。<Effects of the Invention> As mentioned above, the fusible insulating tape according to the present invention not only imparts tracking resistance to the support, but also
Since the fusion layer also maintains sufficient fusion properties and has excellent tracking resistance, tracking damage can be well prevented even on the tapered surface at the end of the tape-wrapped layer, and the fusion properties are excellent. It has good watertightness and can hold a sufficient amount of water.
Other electrical properties such as dielectric strength and insulation resistance can also be fully guaranteed.
Claims (2)
の支持体に、ブチルゴム６０〜１５０重量部、高分子量
ポリイソブチレン３０〜７０重量部、低分子量ポリイソ
ブチレン２０〜１２０重量部、低密度ポリエチレン５０
〜１５０重量部を含む混和物１００重量部に水酸化マグ
ネシウム２０〜８０重量部と金属炭酸塩２５重量部以下
とを添加してなる混和物の融着層を設けたことを特徴と
する耐トラッキング性テープまたはシート。(1) 60 to 150 parts by weight of butyl rubber, 30 to 70 parts by weight of high molecular weight polyisobutylene, 20 to 120 parts by weight of low molecular weight polyisobutylene, and 50 parts by weight of low density polyethylene to a support composed of a thermoplastic resin mixed with an anti-tracking agent.
Anti-tracking characterized by providing a fusion layer of a mixture obtained by adding 20 to 80 parts by weight of magnesium hydroxide and 25 parts by weight or less of a metal carbonate to 100 parts by weight of a mixture containing ~150 parts by weight. Sex tape or sheet.
部に水酸化マグネシウム３〜７０重量部と金属炭酸塩２
〜３０重量部を添加したことを特徴とする請求項（１）
記載の耐トラッキング性テープまたはシート。(2) As an anti-tracking agent, 3 to 70 parts by weight of magnesium hydroxide and 2 parts by weight of metal carbonate are added to 100 parts by weight of thermoplastic resin.
Claim (1) characterized in that ~30 parts by weight is added.
Tracking resistant tape or sheet as described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1103030A JPH02281504A (en) | 1989-04-21 | 1989-04-21 | Tracking resistant tape or sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1103030A JPH02281504A (en) | 1989-04-21 | 1989-04-21 | Tracking resistant tape or sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02281504A true JPH02281504A (en) | 1990-11-19 |
Family
ID=14343255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1103030A Pending JPH02281504A (en) | 1989-04-21 | 1989-04-21 | Tracking resistant tape or sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02281504A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0592937A2 (en) * | 1992-10-12 | 1994-04-20 | Nitto Denko Corporation | Tracking resistant material and circuit substrate using the material |
| FR2805025A1 (en) * | 2000-02-15 | 2001-08-17 | Hutchinson | THERMAL INSULATION MATERIAL AND USES THEREOF |
| FR2805024A1 (en) * | 2000-02-15 | 2001-08-17 | Hutchinson | Thermal insulation material for submarine crude oil conduits at great depth comprises a crosslinkable elastomer and a non-crosslinkable elastomer of low thermal conductivity and optionally other low conductivity components |
| CN110408349A (en) * | 2019-08-23 | 2019-11-05 | 深圳市乐普泰科技股份有限公司 | It is a kind of electrically to use waterproof insulation tape and preparation method thereof |
| CN113462091A (en) * | 2021-07-14 | 2021-10-01 | 山东七星电气科技发展有限公司 | Insulating strip capable of being self-melted with crosslinked polyethylene and preparation process thereof |
| WO2023053560A1 (en) * | 2021-09-28 | 2023-04-06 | 東洋インキＳｃホールディングス株式会社 | Insulative adhesive tape |
| CN116218418A (en) * | 2023-04-27 | 2023-06-06 | 淄博龙沙高分子材料科技有限公司 | Solid adhesive for cotton coating and preparation method thereof |
-
1989
- 1989-04-21 JP JP1103030A patent/JPH02281504A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0592937A2 (en) * | 1992-10-12 | 1994-04-20 | Nitto Denko Corporation | Tracking resistant material and circuit substrate using the material |
| EP0592937A3 (en) * | 1992-10-12 | 1997-03-05 | Nitto Denko Corp | Tracking resistant material and circuit substrate using the material |
| FR2805025A1 (en) * | 2000-02-15 | 2001-08-17 | Hutchinson | THERMAL INSULATION MATERIAL AND USES THEREOF |
| FR2805024A1 (en) * | 2000-02-15 | 2001-08-17 | Hutchinson | Thermal insulation material for submarine crude oil conduits at great depth comprises a crosslinkable elastomer and a non-crosslinkable elastomer of low thermal conductivity and optionally other low conductivity components |
| WO2001060910A1 (en) * | 2000-02-15 | 2001-08-23 | Hutchinson | Pipes containing heat insulating material |
| US6910507B2 (en) | 2000-02-15 | 2005-06-28 | Hutchinson | Pipes containing heat insulating material |
| CN110408349A (en) * | 2019-08-23 | 2019-11-05 | 深圳市乐普泰科技股份有限公司 | It is a kind of electrically to use waterproof insulation tape and preparation method thereof |
| CN113462091A (en) * | 2021-07-14 | 2021-10-01 | 山东七星电气科技发展有限公司 | Insulating strip capable of being self-melted with crosslinked polyethylene and preparation process thereof |
| WO2023053560A1 (en) * | 2021-09-28 | 2023-04-06 | 東洋インキＳｃホールディングス株式会社 | Insulative adhesive tape |
| JP2023048781A (en) * | 2021-09-28 | 2023-04-07 | 東洋インキＳｃホールディングス株式会社 | Insulation adhesive tape |
| CN116218418A (en) * | 2023-04-27 | 2023-06-06 | 淄博龙沙高分子材料科技有限公司 | Solid adhesive for cotton coating and preparation method thereof |
| CN116218418B (en) * | 2023-04-27 | 2023-07-11 | 淄博龙沙高分子材料科技有限公司 | Solid adhesive for cotton coating and preparation method thereof |
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