JPH01167349A - Electrical insulating composition - Google Patents
Electrical insulating compositionInfo
- Publication number
- JPH01167349A JPH01167349A JP32594287A JP32594287A JPH01167349A JP H01167349 A JPH01167349 A JP H01167349A JP 32594287 A JP32594287 A JP 32594287A JP 32594287 A JP32594287 A JP 32594287A JP H01167349 A JPH01167349 A JP H01167349A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- hydrogenated liquid
- liquid isoprene
- vulcanizing agent
- present
- 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 17
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 229920003049 isoprene rubber Polymers 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 8
- 150000001451 organic peroxides Chemical class 0.000 claims abstract description 4
- 238000010292 electrical insulation Methods 0.000 claims description 5
- 229920002397 thermoplastic olefin Polymers 0.000 claims description 5
- 239000000654 additive Substances 0.000 abstract description 8
- 230000005012 migration Effects 0.000 abstract description 5
- 238000013508 migration Methods 0.000 abstract description 5
- 150000001336 alkenes Chemical class 0.000 abstract description 4
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 abstract description 4
- 229920000181 Ethylene propylene rubber Polymers 0.000 abstract description 3
- 229920002725 thermoplastic elastomer Polymers 0.000 abstract description 3
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 abstract description 2
- -1 dicumylperoxide) Chemical class 0.000 abstract description 2
- 238000005984 hydrogenation reaction Methods 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 abstract description 2
- 229920001971 elastomer Polymers 0.000 description 10
- 239000005060 rubber Substances 0.000 description 10
- 239000010734 process oil Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- 239000005977 Ethylene Substances 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 150000001993 dienes Chemical class 0.000 description 2
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- OJOWICOBYCXEKR-KRXBUXKQSA-N (5e)-5-ethylidenebicyclo[2.2.1]hept-2-ene Chemical compound C1C2C(=C/C)/CC1C=C2 OJOWICOBYCXEKR-KRXBUXKQSA-N 0.000 description 1
- PYOLJOJPIPCRDP-UHFFFAOYSA-N 1,1,3-trimethylcyclohexane Chemical compound CC1CCCC(C)(C)C1 PYOLJOJPIPCRDP-UHFFFAOYSA-N 0.000 description 1
- HECLRDQVFMWTQS-RGOKHQFPSA-N 1755-01-7 Chemical compound C1[C@H]2[C@@H]3CC=C[C@@H]3[C@@H]1C=C2 HECLRDQVFMWTQS-RGOKHQFPSA-N 0.000 description 1
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 1
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004902 Softening Agent Substances 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は、エチレン・プロピレンゴム等のオレフィン系
熱可塑性ゴムをベースとする電気絶縁用組成物に関する
。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an electrically insulating composition based on an olefinic thermoplastic rubber such as ethylene-propylene rubber.
（従来の技術）
−ｆｆｉに、架橋ポリエチレン絶縁ケーブル等のケーブ
ル接続部に使用されるストレスコーン等のゴムモールド
品には、絶縁材料のなかでも耐候性、１ｉ１８性、電気
特性等に優れたエチレン・プロピレンゴムが一般に使用
されている。(Prior technology) Rubber molded products such as stress cones used for cable connections such as cross-linked polyethylene insulated cables are manufactured using ethylene, which has excellent weather resistance, 1i18 properties, and electrical properties among insulating materials.・Propylene rubber is commonly used.
従来、このエチレン・プロピレンゴムには、機械特性や
加工性を改善するために、軟化剤、充填剤その他の添加
剤が配合され、そのうち軟化剤としては、可塑化効率の
良いプロセス油、なかでもパラフィン系のプロセス油が
使用されている。Traditionally, ethylene propylene rubber has been blended with softeners, fillers, and other additives to improve its mechanical properties and processability. Paraffin-based process oil is used.
（発明が解決しようとする問題点）
しかしながらこのようなプロセス油配合のエチレン・プ
ロピレンゴムでは、成形品、特に前述のストレスコーン
等のようにケーブル外周に密着させて使用するようなも
のの場合、エチレン・プロピレンゴム中のプロセス油が
、表面にブリードし、さらにプロセス油と相溶性の良い
ポリエチレン基材層へと移行して、その特性を損なうと
いう問題があった。たとえばケーブル半導電層では、そ
の体積固有抵抗値が上昇して導電性が低下し、誘電正接
の上昇、発熱、電解緩和特性の低下等の特性低下を招い
た。(Problem to be Solved by the Invention) However, with such ethylene/propylene rubber containing process oil, ethylene - There was a problem in that the process oil in the propylene rubber bled onto the surface and migrated to the polyethylene base layer, which has good compatibility with the process oil, impairing its properties. For example, in a cable semiconducting layer, its volume resistivity increases and its conductivity decreases, leading to deterioration in properties such as an increase in dielectric loss tangent, heat generation, and a decrease in electrolytic relaxation characteristics.
そこで本発明はこのような従来の問題を解決しようとす
るもので、耐候性、耐熱性、電気特性はもとよりａ械的
特性や加工性等が良好で、しかも添加剤が表面に移行す
ることのない電気絶縁用組成物を提供することを目的と
する。Therefore, the present invention aims to solve these conventional problems.It has good weather resistance, heat resistance, electrical properties, mechanical properties, workability, etc., and also has a structure that prevents additives from migrating to the surface. The object of the present invention is to provide an electrically insulating composition that does not require any electrical insulation.
［発明の構成コ
（問題点を解決するための手段）
本発明の電気絶縁用組成物は、オレフィン系熱可塑性ゴ
ムに、水素添加液状イソプレンゴム１０〜１００ＰＨＲ
と、加硫剤とを添加することを特徴としている。[Constitution of the Invention (Means for Solving the Problems)] The electrical insulation composition of the present invention includes hydrogenated liquid isoprene rubber containing 10 to 100 PHR of hydrogenated liquid isoprene rubber to an olefinic thermoplastic rubber.
and a vulcanizing agent.
本発明に使用されるオレフィン系熱可塑性ゴムとしては
、エチレン・プロピレン共重合体等をはじめとするエチ
レン・αオレフィン共重合体、ジエン成分としてジシク
ロペンタジェン、エチリデンノルボーネン、１．４−へ
キサジエン等を含宥するエチレン・プロピレン・ジエン
三元共重合体等があげられる。市販のものを例示すると
、たとえばエチレン・プロピレン共重合体としては、三
井ＥＰＴ ’００４５ （三井石油化学社製 商品名）
等があり、エチレン・プロピレン・ジエン三元共重合体
としては、たとえば三井ＥＰＴ ’３０４５ （三井石
油化学社製 商品名） 、ＪＳＲＥＰ ＄２１ （日本
合成ゴム社製商品名）等がある。これらは単独で使用し
てもよく混合して使用してもよい。The olefinic thermoplastic rubber used in the present invention includes ethylene/α-olefin copolymers such as ethylene/propylene copolymers, dicyclopentadiene, ethylidenenorbornene, and 1,4- as diene components. Examples include ethylene/propylene/diene terpolymers containing xadiene and the like. Examples of commercially available ethylene-propylene copolymers include Mitsui EPT '0045 (trade name, manufactured by Mitsui Petrochemicals Co., Ltd.).
Examples of the ethylene-propylene-diene terpolymer include Mitsui EPT '3045 (trade name, manufactured by Mitsui Petrochemical Co., Ltd.) and JSREP $21 (trade name, manufactured by Japan Synthetic Rubber Co., Ltd.). These may be used alone or in combination.
本発明に使用される水素添加液状イソプレンゴムとして
は、水素添加率９０％以上の液状イソプレンゴムが適し
ており、たとえばＬＩＲ’ ２９０ （クラレ社製 商
品名）等があげられる。なお本発明において、このもの
の配合量を１０〜１００ＰＨＲに限定したのは、ｌｏＰ
ＨＲ未満では、加工性が不良となって本発明としての効
果が得られなくなり、逆に１００ＰＨＲを越えると、後
述するように加硫が不十分となって、機械的特性が低下
し、耐熱性、耐候性、電気特性等も低下するようになる
からである。As the hydrogenated liquid isoprene rubber used in the present invention, liquid isoprene rubber with a hydrogenation rate of 90% or more is suitable, such as LIR' 290 (trade name, manufactured by Kuraray Co., Ltd.). In the present invention, the content of this compound is limited to 10 to 100 PHR because loP
If it is less than 100 PHR, the processability will be poor and the effect of the present invention will not be obtained. On the other hand, if it exceeds 100 PHR, as will be described later, vulcanization will be insufficient, the mechanical properties will deteriorate, and the heat resistance will deteriorate. This is because weather resistance, electrical properties, etc. also deteriorate.
本発明に使用される架橋剤としては、有機過酸化物が適
しており、たとえばジクミルパーオキサイド（ＤＣＰ
＞ 、３，３．５−トリメチルシクロヘキサン等があげ
られる。このような有機過酸化物を用いることにより、
上記の水素添加液状イソプレンゴムはベースゴムと共架
橋されて、表面への移行が防止されるとともに、良好な
機械的特性、耐熱性、耐候性、電気特性等が確保される
。なおその配合量は、被架橋成分であるオレフィン系熱
可塑性ゴムおよび水素添加液状インプレンゴムの合計量
１００重量部あたり、２０〜５０重量部が適当である。As the crosslinking agent used in the present invention, organic peroxides are suitable, such as dicumyl peroxide (DCP
>, 3,3.5-trimethylcyclohexane, etc. By using such organic peroxides,
The above hydrogenated liquid isoprene rubber is co-crosslinked with the base rubber to prevent migration to the surface and ensure good mechanical properties, heat resistance, weather resistance, electrical properties, etc. The appropriate amount is 20 to 50 parts by weight per 100 parts by weight of the total amount of the olefinic thermoplastic rubber and hydrogenated liquid impregnated rubber as components to be crosslinked.
本発明の組成物には、以上の成分の他に、本発明の効果
を損なわない範囲で、オレフィン系熱可塑性ゴムに通常
配合される、公知の充填剤、架橋助剤、老化防止剤、そ
の他の添加剤を適宜配合することができる。また水素添
加液状イソプレンゴムの軟化剤としての作用を補助する
意味で他の軟化剤を添加することもできる。ただしプロ
セス油を添加する場合には、ゴム成分１００重量部あた
り１０重量部以下に抑える必要がある１本発明の効果が
得られなくなるからである。In addition to the above-mentioned components, the composition of the present invention may include known fillers, crosslinking aids, anti-aging agents, etc., which are usually added to olefin thermoplastic rubbers, to the extent that they do not impair the effects of the present invention. Additives may be appropriately blended. Further, other softeners may be added to assist the action of the hydrogenated liquid isoprene rubber as a softener. However, if process oil is added, the effect of the present invention, which requires keeping the amount to 10 parts by weight or less per 100 parts by weight of the rubber component, will not be achieved.
本発明の組成物は、上述の各配合成分をロールやバンバ
リーミキサ−等の通常の混練機を用いて混合することに
より得られる。混合は、各配合成分を同時に混合するよ
うにしてもよく、あるいは加硫剤および加硫助剤を除く
配合成分をまず混合し、次いでその混合物に加硫剤およ
び加硫助剤を添加し混合するようにしてもよい。The composition of the present invention can be obtained by mixing the above-mentioned components using a conventional kneading machine such as a roll or a Banbury mixer. The mixing may be done by mixing each component at the same time, or by first mixing the components excluding the vulcanizing agent and vulcanizing aid, and then adding the vulcanizing agent and vulcanizing aid to the mixture and mixing. You may also do so.
このようにして得られた本発明の組成物は、加工性をは
じめ、耐熱性、耐候性、電気特性、機械的特性等が良好
で、しかも添加剤の表面への移行が防止されるため、ケ
ーブル外周に装着されて使用されるモールド品のみなら
ず、電線ケーブルの絶縁被覆、電気絶縁用シートやフィ
ルム、さらには一般ゴム製品の成形材料として広く使用
することができる。The composition of the present invention thus obtained has good processability, heat resistance, weather resistance, electrical properties, mechanical properties, etc., and furthermore, the migration of additives to the surface is prevented. It can be widely used not only as a molded product attached to the outer circumference of a cable, but also as an insulating coating for electric wires and cables, electrically insulating sheets and films, and even as a molding material for general rubber products.
（作 用）
本発明の電気絶縁用組成物では、水素添加液状インプレ
ンゴムが架橋剤によりベースのオレフィン系熱可塑性、
ゴムとともに架橋されるため、表面へ移行せず、また耐
熱性その他の特性が損なわれることもない、しかもこの
水素添加液状イソプレンゴムは軟化剤として十分その効
果を発揮するので成形時の加工性も良好である。(Function) In the electrical insulation composition of the present invention, hydrogenated liquid impregnated rubber is used as a base olefin thermoplastic,
Because it is crosslinked with the rubber, it does not migrate to the surface and does not impair heat resistance or other properties.Furthermore, this hydrogenated liquid isoprene rubber is effective as a softening agent, so it is easy to process during molding. In good condition.
（実施例） 次に実施例について説明する。(Example) Next, an example will be described.
実施例
次表に示す各配合成分を熱ロールを用いて１００℃で１
０分間均一に混練した後、ストレスコーン成形用金型を
用いて、常法により所定の形状に成形した０次いでこれ
を１６０℃で４５分間加熱架橋させてストレスコーンを
製造した。Example Each of the ingredients shown in the following table was heated to 100°C using a hot roll.
After uniformly kneading for 0 minutes, the mixture was molded into a predetermined shape by a conventional method using a stress cone mold.Then, this was heat-crosslinked at 160° C. for 45 minutes to produce a stress cone.
この実施例について、混練後の組成物のムーニー粘度お
よび加工性、得られた成形品の耐熱性および添加剤の表
面への移行の有無、さらに得られたストレスコーンを用
いて架橋ポリエチレン絶縁ケーブルの接続部を形成し、
これに密着した半導電層の抵抗安定性を調べた。結果は
次表に示す通りであった。Regarding this example, we investigated the Mooney viscosity and processability of the composition after kneading, the heat resistance of the obtained molded product, and whether or not additives migrated to the surface. forming a connection;
The resistance stability of the semiconducting layer in close contact with this was investigated. The results are shown in the table below.
なお表中比較例として示したのは、比較例１が上記実施
例の水素添加液状イソプレンゴムに代えてプロセス油を
配合した例、比較例２はそのプロセス油の配合量を増量
した例、比較例３は実施例の水素添加液状イソプレンゴ
ムを配合せず、かつプロセス油も配合しない例、さらに
比較例４は実施例の水素添加液状インブレンゴムに代え
て液上クロロプレンゴムを配合した例である。The comparative examples shown in the table are Comparative Example 1 in which process oil was blended in place of the hydrogenated liquid isoprene rubber in the above example, Comparative Example 2 in which the amount of process oil blended was increased, and Comparative Example 2 was an example in which the amount of process oil blended was increased. Example 3 is an example in which the hydrogenated liquid isoprene rubber of the example is not blended and no process oil is blended, and Comparative Example 4 is an example in which liquid chloroprene rubber is blended in place of the hydrogenated liquid isoprene rubber of the example.
表からも明らかなように本発明の電気絶縁用組成物は、
添加剤の移行が全くみちれず、半導電層の抵抗安定性を
低下させることがない、しかも加工性、耐熱性等の特性
も良好である。As is clear from the table, the electrical insulation composition of the present invention is
There is no migration of additives at all, and the resistance stability of the semiconductive layer is not degraded, and the properties such as processability and heat resistance are also good.
［発明の効果コ
以上の実施側からも明らかなように、本発明の電気絶縁
用組成物はミ添加剤の表面への移行が防止されるうえ、
耐熱性、耐候性、電気特性はもとより機械的特性や加工
性等も良好である。[Effects of the Invention] As is clear from the above implementation, the electrically insulating composition of the present invention not only prevents the migration of additives to the surface, but also
It has good heat resistance, weather resistance, electrical properties, as well as mechanical properties and workability.
Claims (2)
プレンゴム１０〜１００ＰＨＲと、加硫剤とを添加する
ことを特徴とする電気絶縁用組成物。(1) An electrical insulation composition characterized by adding 10 to 100 PHR of hydrogenated liquid isoprene rubber and a vulcanizing agent to an olefinic thermoplastic rubber.
項記載の電気絶縁用組成物。(2) Claim 1 in which the vulcanizing agent is an organic peroxide
The electrical insulating composition described in 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62325942A JP2548256B2 (en) | 1987-12-23 | 1987-12-23 | Electrical insulation composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62325942A JP2548256B2 (en) | 1987-12-23 | 1987-12-23 | Electrical insulation composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01167349A true JPH01167349A (en) | 1989-07-03 |
| JP2548256B2 JP2548256B2 (en) | 1996-10-30 |
Family
ID=18182320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62325942A Expired - Lifetime JP2548256B2 (en) | 1987-12-23 | 1987-12-23 | Electrical insulation composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2548256B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010253737A (en) * | 2009-04-23 | 2010-11-11 | Nok Corp | Nitrile rubber metal laminate |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59102941A (en) * | 1982-12-03 | 1984-06-14 | Kuraray Co Ltd | Rubber composition |
-
1987
- 1987-12-23 JP JP62325942A patent/JP2548256B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59102941A (en) * | 1982-12-03 | 1984-06-14 | Kuraray Co Ltd | Rubber composition |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010253737A (en) * | 2009-04-23 | 2010-11-11 | Nok Corp | Nitrile rubber metal laminate |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2548256B2 (en) | 1996-10-30 |
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