JP2013155272A - Mixed insulating material and molded article thereof - Google Patents
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本発明は、新規の混合絶縁材料及びその成形品に関し、特に、耐熱性、耐寒性、耐油性、機械的強度及び柔軟性のすべてを兼ね備え、かつ、コストパフォーマンスに優れることを特徴としたものである。 The present invention relates to a novel mixed insulating material and a molded product thereof, and is particularly characterized by having all of heat resistance, cold resistance, oil resistance, mechanical strength and flexibility, and excellent cost performance. is there.
一般的な絶縁材料としては、安価で汎用的な材料としてポリエチレンが多く用いられている。また、柔軟性、耐熱性及び耐寒性が必要な環境下では、シリコーンゴムが使用される。しかし、ポリエチレンは耐熱性が低く、シリコーンゴムは耐油性や機械的な強度が劣るなどといった問題が、従来から指摘されている。
フッ素ゴムは、シリコーンゴムよりも優れた耐熱性、耐油性を有する柔軟材料であるが、耐寒性に劣り、かつ高価・高比重という問題がある。
その他の高性能な材料として、ポリイミドやフッ素樹脂等が挙げられるが、柔軟性が乏しい上、高価のためコスト面でも問題がある。
こうした中、近年では、絶縁材料において高性能化が求められる一方で、コスト競争に見合った安価な材料が切望されている。例えば、自動車業界においてはハイブリット車や電気自動車の開発が活発であるが、ハイブリッド車においてはエンジンルーム内などの一部の配線において高温で油の多い過酷な環境下で使用されるため、耐熱性、耐寒性に加え耐油性を持つ絶縁材料が必要とされる。また、電気自動車では低コスト化、軽量化を目的とする上で様々なユニットがモジュール化、コンパクト化されており、そのような場所は配線スペースが極めて狭小なことから、配線しやすいように柔軟性の高い絶縁材料が切望されている。これらの特性を有する高性能な絶縁材料を、さらに安価に得ることが課題となっている。
高性能な絶縁材料を得る従来技術の１つとして、シリコーンゴムの主成分であるポリオルガノシロキサンとポリエステル又はポリエーテル、及び、相溶化剤を用い、共加硫してなる熱硬化性ゴム塑性物が知られている。（特許文献１）
その他、充填剤入りシリコーンゴム、相溶剤、ポリイミド又はポリエステル樹脂他を混合し、開始剤の存在下にシリコーンゴムを動的加硫して得られる熱可塑性シリコーンエラストマー組成物等も知られている。（特許文献２）
しかし、これらの公知技術は全て、異種高分子間の界面における強度や分散性を改善するため、相溶剤を用いることを特徴としており、組成物の柔軟性や耐熱性が優れる一方で、相溶剤の材料費や添加・加硫工程等によりコストが嵩む要因となっている。
As a general insulating material, polyethylene is often used as an inexpensive and general-purpose material. In an environment where flexibility, heat resistance and cold resistance are required, silicone rubber is used. However, it has been pointed out that polyethylene has low heat resistance and silicone rubber has poor oil resistance and mechanical strength.
Fluororubber is a flexible material having better heat resistance and oil resistance than silicone rubber, but has poor cold resistance and has problems of high cost and high specific gravity.
Other high-performance materials include polyimide, fluororesin, and the like, but they have poor flexibility and are expensive and have a problem in terms of cost.
Under these circumstances, in recent years, while high performance is demanded for insulating materials, inexpensive materials that meet cost competition are desired. For example, in the automobile industry, development of hybrid cars and electric cars is active, but in hybrid cars, some wiring in the engine room etc. is used in harsh environments with high temperatures and a lot of oil. Insulating materials with oil resistance in addition to cold resistance are required. In electric vehicles, various units are modularized and compact for the purpose of cost reduction and weight reduction, and the wiring space is extremely small in such a place, so it is flexible so that wiring is easy. A highly insulating material is highly desired. It has been a challenge to obtain a high-performance insulating material having these characteristics at a lower cost.
As one of the conventional techniques for obtaining a high-performance insulating material, a thermosetting rubber plastic material obtained by co-vulcanization using a polyorganosiloxane and a polyester or polyether, which are main components of silicone rubber, and a compatibilizing agent. It has been known. (Patent Document 1)
In addition, a thermoplastic silicone elastomer composition obtained by mixing filled silicone rubber, compatibilizer, polyimide, polyester resin or the like and dynamically vulcanizing the silicone rubber in the presence of an initiator is also known. (Patent Document 2)
However, all of these known techniques are characterized by the use of a compatibilizer in order to improve the strength and dispersibility at the interface between different types of polymers, while the flexibility and heat resistance of the composition are excellent, The cost is increased due to the material cost and the addition / vulcanization process.
本発明の課題は、ポリエチレン、シリコーンゴム等の単体材料、及び、従来技術のようなポリマーブレンド材料で実現できていない、耐熱性、耐寒性、耐油性、機械的強度及び柔軟性の全てを兼ね備え、かつ、コストパフォーマンスに優れる混合絶縁材料及びその成形品を提供することにある。 The object of the present invention is to combine all of heat resistance, cold resistance, oil resistance, mechanical strength and flexibility that cannot be realized with a single material such as polyethylene and silicone rubber and a polymer blend material as in the prior art. And it is providing the mixed insulation material excellent in cost performance, and its molded article.
本発明に係る混合絶縁材料は、ポリエステル系共重合体及びシリコーンゴムからなり、相溶剤を使うことなく溶融混合により得ることを特徴とする。
本発明者等は鋭意試作を重ねた結果、ポリエステル系共重合体とシリコーンゴムの含有比（ｗｔ％）を９０：１０〜５：９５とし、所望の条件下において溶融混合することにより、相溶剤を使うことなく、分散性に優れる新規の混合絶縁材料を得るに至った。
耐熱性等の高性能化、及び、電線、チューブ、パッキン等への成型時の生産性を鑑みると、ポリエステル系共重合体とシリコーンゴムの含有比（ｗｔ％）のさらに好ましい範囲は８５：１５〜５５：４５である。
また、混合絶縁材料の耐熱温度（ＵＬ７５８準拠）は少なくとも１５０℃、耐寒性を示す脆化温度（ＪＩＳ Ｋ７２１６準拠）は−６０℃以下、柔軟性を示す硬度（ＪＩＳ Ｋ６２５３準拠 タイプＡ）は３５〜９５であることを特徴とする。
The mixed insulating material according to the present invention comprises a polyester copolymer and silicone rubber, and is obtained by melt mixing without using a compatibilizer.
As a result of repeated trial manufactures, the inventors set the content ratio (wt%) of the polyester copolymer and the silicone rubber to 90:10 to 5:95, and melt-mixed them under desired conditions. A new mixed insulating material having excellent dispersibility has been obtained without using any other material.
Considering higher performance such as heat resistance and productivity at the time of molding into an electric wire, tube, packing, etc., a more preferable range of the content ratio (wt%) of the polyester copolymer and silicone rubber is 85:15. ~ 55: 45.
Moreover, the heat resistance temperature (based on UL758) of the mixed insulating material is at least 150 ° C., the embrittlement temperature indicating cold resistance (based on JIS K7216) is −60 ° C. or less, and the hardness indicating flexibility (JIS K6253 compatible type A) is 35 to 35 ° C. 95.
本発明によれば、以下の顕著な効果が奏される。
（１）本発明の混合絶縁材料は、ポリエチレンに比べて、耐熱性、耐寒性、耐油性及び柔軟性において優れている。
（２）本発明の混合絶縁材料は、シリコーンゴムに比べて、耐油性が格段に改善され、柔軟性、耐熱性、耐寒性及びコストにおいては同等である。ポリエステル系共重合体を混合する付随効果として、シリコーンゴム単体に比べて機械的強度が改善する点も挙げられる。
（３）本発明の混合絶縁材料は、フッ素ゴムに比べて耐熱性は若干劣るが、耐寒性は格段に優れ、コストも低い。
（４）本発明の混合絶縁材料は、ポリイミドやフッ素樹脂等の高性能な材料に比べて、耐熱性において若干劣るが、耐寒性はほぼ同等で、柔軟性においては格段に優れている。かつ、比重が小さいことによる軽量化が可能である。
（５）加熱溶融による混合・成形が可能なため、前もって材料を混合し加硫するなどの工程が不要であり、製造コストが格段に節約できる。
（６）ポリエステル系共重合体及びシリコーンゴム以外に相溶剤等の第３成分材料が不要なため、材料費を抑えられ、かつ第３成分材料による特性の劣化を防止できる。
According to the present invention, the following remarkable effects are exhibited.
(1) The mixed insulating material of the present invention is superior in heat resistance, cold resistance, oil resistance and flexibility as compared with polyethylene.
(2) The mixed insulating material of the present invention has much improved oil resistance compared to silicone rubber, and is equivalent in flexibility, heat resistance, cold resistance and cost. As an incidental effect of mixing the polyester copolymer, the mechanical strength is improved as compared with the silicone rubber alone.
(3) The mixed insulating material of the present invention is slightly inferior in heat resistance as compared with fluororubber, but is extremely excellent in cold resistance and low in cost.
(4) Although the mixed insulating material of the present invention is slightly inferior in heat resistance as compared with high-performance materials such as polyimide and fluororesin, it is almost equivalent in cold resistance and remarkably excellent in flexibility. In addition, the weight can be reduced due to the small specific gravity.
(5) Since mixing and molding by heating and melting are possible, a process such as mixing and vulcanizing materials in advance is unnecessary, and manufacturing costs can be greatly reduced.
(6) Since a third component material such as a compatibilizer other than the polyester-based copolymer and silicone rubber is not required, the material cost can be suppressed and the deterioration of characteristics due to the third component material can be prevented.
本発明の混合絶縁材料を得る主たる態様としては、以下のようなものがある。 The main aspects of obtaining the mixed insulating material of the present invention are as follows.
本発明の混合絶縁材料は、ポリエステル系共重合体及びシリコーンゴムからなり、相溶剤を使うことなく溶融混合により得られる。ポリエステル系共重合体は、具体的には数種類のポリエステルを共重合した材料であり、先行文献における相溶剤の役割を果たす。
ポリエステル系共重合体とシリコーンゴムの含有比（ｗｔ％）は９０：１０〜５：９５である。耐熱性等の高性能化、及び、電線、チューブ、パッキン等への成型時の生産性を鑑みて、さらに好ましい範囲は８５：１５〜５５：４５である。
The mixed insulating material of the present invention comprises a polyester copolymer and silicone rubber, and can be obtained by melt mixing without using a compatibilizer. Specifically, the polyester-based copolymer is a material obtained by copolymerizing several kinds of polyesters, and serves as a compatibilizer in the prior art.
The content ratio (wt%) of the polyester copolymer and the silicone rubber is 90:10 to 5:95. In view of high performance such as heat resistance and productivity at the time of molding into an electric wire, tube, packing, etc., a more preferable range is 85:15 to 55:45.
ここで、ポリエステル系共重合体の含有量が多いと、シリコーンゴムの柔軟性が損なわれる一方、耐油性及び機械的強度が改善される。
シリコーンゴムの含有量が多いと、柔軟性が付与される一方、溶融押出による成型が困難となり、耐油性も損なわれる。
Here, if there is much content of a polyester-type copolymer, while the softness | flexibility of silicone rubber will be impaired, oil resistance and mechanical strength will be improved.
When the content of the silicone rubber is large, flexibility is imparted, but molding by melt extrusion becomes difficult, and oil resistance is also impaired.
該含有比のポリエステル系共重合体とシリコーンゴムを、所望の条件下において溶融混合することにより、相溶剤を使うことなく、異種高分子間の界面における強度や分散性に優れる混合絶縁材料が得られる。具体的には、溶融混合時にポリエステル系共重合体のせん断による自己発熱量を考慮し、ポリエステル系共重合体の融点よりも約１５℃〜２０℃低い温度でシリコーンゴムと混合させることで、各材料の粘度がほぼ同値となり優れた分散性を得られるため、相溶剤等の第３成分材料が不要となる。
溶融混合の方法は特に限定しないが、一般的な加熱溶融押出機、加熱式ニーダー又はミキサー、加熱式二本ロール等を用いるのが好ましい。
また、押出成型において含有比（ｗｔ％）９０：１０〜５５：４５は加熱溶融押出が適しており、含有比（ｗｔ％）３０：７０〜５：９５は加熱溶融押出後に電子線架橋や紫外線照射架橋によってゴム弾性体にする方法が適している。また、含有比（ｗｔ％）３０：７０〜５：９５において前述の架橋方法が行えない場合には、予め加熱溶融混練にてコンパウンド化した後に冷却し、架橋剤を添加して成型後に加熱し架橋するなど、含有比率により最適な成型方法は異なる。
By mixing the polyester copolymer of this content ratio and silicone rubber under desired conditions, a mixed insulating material having excellent strength and dispersibility at the interface between different polymers can be obtained without using a compatibilizer. It is done. Specifically, in consideration of the amount of self-heating due to shearing of the polyester copolymer during melt mixing, each is mixed with silicone rubber at a temperature lower by about 15 ° C. to 20 ° C. than the melting point of the polyester copolymer. Since the materials have substantially the same viscosity and excellent dispersibility can be obtained, a third component material such as a compatibilizer is not necessary.
The method of melt mixing is not particularly limited, but it is preferable to use a general heat melt extruder, a heat kneader or mixer, a heat double roll or the like.
In extrusion molding, a content ratio (wt%) of 90:10 to 55:45 is suitable for heat-melt extrusion, and a content ratio (wt%) of 30:70 to 5:95 is electron beam crosslinking or ultraviolet radiation after heat-melt extrusion. A method of forming a rubber elastic body by irradiation crosslinking is suitable. In addition, when the above-described crosslinking method cannot be performed at a content ratio (wt%) of 30:70 to 5:95, cooling is performed after compounding by heating and melt-kneading in advance, and a crosslinking agent is added and heated after molding. The optimum molding method varies depending on the content ratio such as crosslinking.
「実施例１〜実施例５」
ここで、ポリエステル系共重合体（ａ）とシリコーンゴム（ｂ）の含有比（ｗｔ％）と、その耐熱性、耐寒性、耐油性及び柔軟性等の各種特性を調べた結果を表１に示す。
"Example 1 to Example 5"
Here, the content ratio (wt%) of the polyester-based copolymer (a) and the silicone rubber (b) and the results of examining various properties such as heat resistance, cold resistance, oil resistance and flexibility are shown in Table 1. Show.
表１より、実施例１から実施例５のポリエステル系共重合体（ａ）とシリコーンゴム（ｂ）の含有比（ｗｔ％）９０：１０〜５：９５では、耐熱性、耐寒性、耐油性、機械的強度及び柔軟性のすべてを兼ね備え、かつ、コストパフォーマンスに優れることが分かる。実施例２及び実施例３の含有比（ｗｔ％）８５：１５〜５５：４５では、上記特性が安定して良好であり、かつ、ＭＦＲが高く加熱溶融押出が可能であり生産性が良い点で、特に好ましい範囲と言える。
柔軟性、すなわち硬度（ＪＩＳ Ｋ６２５３準拠 タイプＡ）において、本発明の混合絶縁材料はシリコーンゴムを混合させることで柔軟性が増しており、比較例１及び比較例２のポリエステル系共重合体単体及び含有比（ｗｔ％）９５：５の混合物、従来例１のポリエチレン単体、従来例３のＦＥＰ等のフッ素樹脂単体に比べて柔軟性が優れている。
耐寒性を示す脆化温度（ＪＩＳ Ｋ７２１６準拠）においても、シリコーンゴム特性が寄与し、特に、従来例２のフッ素ゴム単体に比べ優位性は顕著である。
耐熱性（ＵＬ７５８準拠）において、本発明材料の構成要素であるポリエステル系共重合体及びシリコーンゴムは共に優れているため、従来例２のフッ素ゴム単体や従来例３のＦＥＰ単体には劣るものの、従来例１のポリエチレン単体により遥かに高い耐熱性を有する。
機械的強度（ＡＳＴＭ Ｄ６３８準拠）においては、ポリエステル系共重合体の優位性によりシリコーンゴムの強度弱さが補填され、安定して良好な強度特性が得られる。
耐油性（ＩＳＯ６７２２準拠）においても、ポリエステル系共重合体の優位性によりシリコーンゴムの耐油性弱さが補填され安定して良好な特性を得られ、従来例１のポリエチレン単体、及び比較例３のシリコーンゴム単体より遥かに高い耐油性を有する。
圧縮永久歪み（ＪＩＳ Ｋ６２６２準拠）においては、シリコーンゴムの優位性がポリエステル系共重合体の圧縮永久歪み弱さを補填するため、安定して良好な特性を得られ、比較例１及び比較例２のポリエステル系共重合体単体及び含有比９５：５の混合物、及び従来例１のポリエチレン単体、従来例３のＦＥＰ単体より遥かに優れた圧縮永久歪み特性を有する。
総合評価においては、近年のハイブリッド車及び電気自動車用電線の要求特性として挙げられる、−４０℃〜１５０℃の耐熱性・耐寒性、及び耐油性（耐ガソリン性）を有する、柔軟かつ安価な電線であることを基準として、適用可否を判定した。本発明の実施例１から実施例５においては、比較例及び従来例と比較して、総合的に安定して優れた特性を有しており、さらに実施例２及び実施例３においては特に優れていると言える。
表１に挙げた特性項目以外に、本発明の付随効果として耐候性及び耐コロナ性の向上も確認されている。
From Table 1, when the content ratio (wt%) of the polyester copolymer (a) and the silicone rubber (b) of Examples 1 to 5 is 90:10 to 5:95, heat resistance, cold resistance, and oil resistance are obtained. It can be seen that it has both mechanical strength and flexibility and is excellent in cost performance. In the content ratio (wt%) 85:15 to 55:45 of Example 2 and Example 3, the above characteristics are stable and good, the MFR is high, and heat melt extrusion is possible, and the productivity is good. Therefore, it can be said to be a particularly preferable range.
In the flexibility, that is, the hardness (JIS K6253 compliant type A), the mixed insulating material of the present invention is increased in flexibility by mixing silicone rubber, and the polyester-based copolymer alone of Comparative Example 1 and Comparative Example 2 and Compared to a mixture having a content ratio (wt%) of 95: 5, a polyethylene simple substance of Conventional Example 1 and a fluororesin simple substance such as FEP of Conventional Example 3, the flexibility is excellent.
Silicone rubber properties also contribute to the embrittlement temperature (conforming to JIS K7216) showing cold resistance. In particular, the superiority is significant compared to the conventional fluororubber alone.
In heat resistance (based on UL758), since the polyester copolymer and silicone rubber, which are constituent elements of the material of the present invention, are both superior, the fluororubber alone of Conventional Example 2 and the FEP alone of Conventional Example 3 are inferior. The polyethylene alone of Conventional Example 1 has much higher heat resistance.
In the mechanical strength (according to ASTM D638), the strength weakness of the silicone rubber is compensated by the superiority of the polyester-based copolymer, and good strength characteristics can be obtained stably.
Also in oil resistance (ISO 6722 compliant), the superiority of the polyester-based copolymer compensates for the weak oil resistance of the silicone rubber, and stably obtains good characteristics. The polyethylene alone of Conventional Example 1 and Comparative Example 3 Has much higher oil resistance than silicone rubber alone.
In compression set (according to JIS K6262), the superiority of silicone rubber compensates for the compression set weakness of the polyester copolymer, so that stable and good characteristics can be obtained. Comparative Example 1 and Comparative Example 2 The polyester-based copolymer alone and a mixture with a content ratio of 95: 5, the polyethylene simplex of Conventional Example 1 and the FEP simplex of Conventional Example 3 have far superior compression set characteristics.
In comprehensive evaluation, flexible and inexpensive electric wires having heat resistance / cold resistance of −40 ° C. to 150 ° C. and oil resistance (gasoline resistance), which are listed as required characteristics of electric wires for hybrid vehicles and electric vehicles in recent years The applicability was determined based on the above. In Examples 1 to 5 of the present invention, compared with the comparative example and the conventional example, it has comprehensively stable and excellent characteristics, and in Examples 2 and 3, it is particularly excellent. It can be said that.
In addition to the characteristic items listed in Table 1, improvement in weather resistance and corona resistance has also been confirmed as an accompanying effect of the present invention.
以上より、本発明の混合絶縁材料を用いれば、従来の絶縁材料では十分に補えなかった、耐熱性、耐寒性、耐油性、機械的強度及び柔軟性のすべてを兼ね備え、かつ、コストパフォーマンスに優れる、絶縁電線、チューブ及びパッキン等の成形品が得られる。
以下、本発明の混合絶縁材料を用いた成形品の製造例として、図２に示す絶縁電線の例を挙げる。
「実施例６及び実施例７」
As described above, when the mixed insulating material of the present invention is used, it has all of heat resistance, cold resistance, oil resistance, mechanical strength and flexibility, which cannot be sufficiently compensated by the conventional insulating material, and is excellent in cost performance. In addition, molded products such as insulated wires, tubes and packings are obtained.
Hereinafter, the example of the insulated wire shown in FIG. 2 is given as an example of manufacturing a molded article using the mixed insulating material of the present invention.
"Example 6 and Example 7"
錫めっき軟銅線の導体５（φ０．９ｍｍ、導体構成１９本／０．１８ｍｍ）に、本発明の混合絶縁材料１を厚さ０．４ｍｍ被覆した図２に示す絶縁電線４（φ１．７ｍｍ）を得る。この絶縁電線４の評価結果を表２に示す。 Insulated wire 4 (φ1.7 mm) shown in FIG. 2 in which a mixed insulating material 1 of the present invention is coated with a thickness of 0.4 mm on a tin-plated annealed copper wire conductor 5 (φ0.9 mm, conductor configuration 19 pieces / 0.18 mm) Get. The evaluation results of this insulated wire 4 are shown in Table 2.
表２より、いずれの特性においても、実施例６及び実施例７のポリエステル系共重合体（ａ）とシリコーンゴム（ｂ）の含有比（ｗｔ％）が８５：１５及び５５：４５の絶縁電線は、比較例４及び比較例５のポリエステル系共重合体単体及びシリコーンゴム単体の中間的な特性を有することが分かる。
加熱後の抗張力及び伸び率の残率（ＵＬ７５８準拠）では、実施例６及び実施例７は従来例５のフッ素ゴム電線及び従来例６のＦＥＰ電線と遜色ない特性を有している。
ガソリン浸漬後の抗張力及び伸び率の残率は、実施例６の含有比（ｗｔ％）８５：１５の絶縁電線は従来例５のフッ素ゴム電線及び従来例６のＦＥＰ電線と遜色ない特性を有している。
一方、実施例７の含有比５５：４５の絶縁電線は、比較例５のシリコーンゴム電線の結果からも明らかなように、シリコーンゴムの影響により若干悪化するが、従来例４のポリエチレン電線相当の特性は有している。
ＡＴＦ浸漬後の抗張力及び伸び率の残率は、従来例４のポリエチレン電線に比べ遥かに優位性があり、従来例５のフッ素ゴム電線及び従来例６のＦＥＰ電線と同等レベルの特性を有している。
絶縁抵抗及び絶縁破壊電圧の電気的特性においては、従来例４から従来例６の各種電線に比べて劣っているが、例えば車載用の低圧用電線では十分に使用可能なレベルであることが確認されている。さらに、本発明の混合絶縁材料をジャケット材として使用する場合は、高圧用電線でも使用可能である。
From Table 2, the insulated wires having the content ratio (wt%) of the polyester copolymer (a) of Example 6 and Example 7 and the silicone rubber (b) of 85:15 and 55:45 in any characteristics. It turns out that it has the intermediate characteristic of the polyester-type copolymer single-piece | unit of Comparative Example 4 and Comparative Example 5, and a silicone rubber single-piece | unit.
In terms of the tensile strength after heating and the remaining elongation rate (based on UL758), Example 6 and Example 7 have characteristics comparable to the fluororubber electric wire of Conventional Example 5 and the FEP electric wire of Conventional Example 6.
The tensile strength and the remaining elongation rate after immersion in gasoline are as follows. The insulated wire with the content ratio (wt%) 85:15 in Example 6 has characteristics comparable to the fluororubber wire in Conventional Example 5 and the FEP wire in Conventional Example 6. doing.
On the other hand, the insulated wire having a content ratio of 55:45 in Example 7 is slightly deteriorated due to the influence of silicone rubber, as is apparent from the result of the silicone rubber wire in Comparative Example 5, but is equivalent to the polyethylene wire in Conventional Example 4. Has characteristics.
The tensile strength and the residual elongation rate after immersion in ATF are far superior to the polyethylene wire of Conventional Example 4, and have the same level of characteristics as the fluororubber wire of Conventional Example 5 and the FEP wire of Conventional Example 6. ing.
The electrical characteristics of insulation resistance and dielectric breakdown voltage are inferior to those of the conventional wires 4 to 6, but for example, it is confirmed that they are at a level that can be used satisfactorily with low-voltage wires for vehicles. Has been. Furthermore, when the mixed insulating material of the present invention is used as a jacket material, a high-voltage electric wire can also be used.
本発明の混合絶縁材料１を被覆電線４に成形した際のポリエステル系共重合体３とシリコーンゴム２の混合状態は、図１に示す。
図１は、実施例６の含有比（ｗｔ％）８５：１５の絶縁電線４の混合状態を、走査型電子顕微鏡により観察した画像である。絶縁電線４の絶縁体断面を、溶剤にてシリコーンゴム部分２だけを抽出することにより、小さな丸い空隙部のシリコーンゴム部分２とそれ以外のポリエステル系共重合体部３を確認することができる。図１より、シリコーンゴム部分２がナノオーダーレベルで均一に分散している様子が確認できる。
The mixed state of the polyester-based copolymer 3 and the silicone rubber 2 when the mixed insulating material 1 of the present invention is formed into the covered electric wire 4 is shown in FIG.
FIG. 1 is an image obtained by observing the mixed state of the insulated wire 4 having a content ratio (wt%) of 85:15 in Example 6 with a scanning electron microscope. By extracting only the silicone rubber part 2 from the insulator cross section of the insulated wire 4 with a solvent, the silicone rubber part 2 having a small round gap and the other polyester-based copolymer part 3 can be confirmed. From FIG. 1, it can be confirmed that the silicone rubber portion 2 is uniformly dispersed at the nano-order level.
本発明は、各種絶縁電線、電線の被覆材、チューブ、パッキン等の成形品に幅広く使用可能である。特に、ハイブリッド自動車や電気自動車用モーター等、柔軟性、耐熱性、耐寒性、機械的強度及び耐油性が必要とされ、コストパフォーマンスの厳しい分野において有効利用可能である。 The present invention can be widely used for molded products such as various insulated wires, wire coating materials, tubes, and packings. In particular, flexibility, heat resistance, cold resistance, mechanical strength and oil resistance are required, such as motors for hybrid vehicles and electric vehicles, and can be effectively used in fields with severe cost performance.
１ 本発明の混合絶縁材料
２ シリコーンゴム（溶剤による抽出部）
３ ポリエステル系共重合体
４ 本発明の混合絶縁材料を使用した絶縁電線
５ 導体
1 Mixed insulating material of the present invention 2 Silicone rubber (extraction part by solvent)
3 Polyester copolymer 4 Insulated wire 5 using the mixed insulating material of the present invention 5 Conductor
Claims (7)
Hardness (JIS K6253 conformity type A) is 35-95, The mixed insulation material in any one of Claims 1-6, or its molded article.
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| JP2012016341A JP2013155272A (en) | 2012-01-30 | 2012-01-30 | Mixed insulating material and molded article thereof |
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| JP2012016341A JP2013155272A (en) | 2012-01-30 | 2012-01-30 | Mixed insulating material and molded article thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015064499A1 (en) * | 2013-10-29 | 2015-05-07 | ポリプラスチックス株式会社 | Corona-resistant resin composition, method for developing corona resistance of resin composition, and corona-resistant member |
| JP2015090756A (en) * | 2013-11-05 | 2015-05-11 | 株式会社オートネットワーク技術研究所 | Insulated wire |
| JP2020084068A (en) * | 2018-11-28 | 2020-06-04 | 日星電気株式会社 | Mixed insulation material and formed article |
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2012
- 2012-01-30 JP JP2012016341A patent/JP2013155272A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015064499A1 (en) * | 2013-10-29 | 2015-05-07 | ポリプラスチックス株式会社 | Corona-resistant resin composition, method for developing corona resistance of resin composition, and corona-resistant member |
| JP2016056381A (en) * | 2013-10-29 | 2016-04-21 | ポリプラスチックス株式会社 | Corona-resistant resin composition, method for developing corona resistance of resin composition, and corona-resistant member |
| US10017643B2 (en) | 2013-10-29 | 2018-07-10 | Polyplastics Co., Ltd. | Corona-resistant resin composition, method for developing corona resistance of resin composition, and corona-resistant member |
| JP2015090756A (en) * | 2013-11-05 | 2015-05-11 | 株式会社オートネットワーク技術研究所 | Insulated wire |
| WO2015068539A1 (en) * | 2013-11-05 | 2015-05-14 | 株式会社オートネットワーク技術研究所 | Insulated wire |
| CN105706184A (en) * | 2013-11-05 | 2016-06-22 | 株式会社自动网络技术研究所 | Insulated wire |
| CN105706184B (en) * | 2013-11-05 | 2017-08-15 | 株式会社自动网络技术研究所 | Insulated electric conductor |
| JP2020084068A (en) * | 2018-11-28 | 2020-06-04 | 日星電気株式会社 | Mixed insulation material and formed article |
| JP7195037B2 (en) | 2018-11-28 | 2022-12-23 | 日星電気株式会社 | Mixed insulating materials and moldings |
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