WO2012111985A2 - Cables including insulating layer containing non-crosslinked resin - Google Patents

Cables including insulating layer containing non-crosslinked resin Download PDF

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WO2012111985A2
WO2012111985A2 PCT/KR2012/001160 KR2012001160W WO2012111985A2 WO 2012111985 A2 WO2012111985 A2 WO 2012111985A2 KR 2012001160 W KR2012001160 W KR 2012001160W WO 2012111985 A2 WO2012111985 A2 WO 2012111985A2
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mixture
resin
insulating layer
ethylene
weight
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PCT/KR2012/001160
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French (fr)
Korean (ko)
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WO2012111985A3 (en
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김웅
남진호
김형준
유익현
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엘에스전선 주식회사
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
    • C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
    • C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
    • C09J123/10—Homopolymers or copolymers of propene
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/02—Disposition of insulation
    • H01B7/0275—Disposition of insulation comprising one or more extruded layers of insulation

Abstract

The present invention relates to cables including one conductor and/or an insulating layer surrounding the conductor. The insulating layer comprises a mixture of a polypropylene resin and an ethylene-propylene copolymer resin. 60 to 70 weight% of the mixture based on the total weight thereof is eluted in an elution test using a boiling xylene solution.

Description

비가교 수지를 함유하는 절연층을 포함하는 케이블Cable comprising an insulating layer containing a non-crosslinked resin
본 발명은 비가교 수지를 함유하는 절연층을 포함하는 케이블에 관한 것이다.The present invention relates to a cable comprising an insulating layer containing a non-crosslinked resin.
본 출원은 2011년 2월 18일에 출원된 한국특허출원 제10-2011-0014787호에 기초한 우선권을 주장하며, 해당 출원의 명세서 및 도면에 개시된 모든 내용은 본 출원에 원용된다.This application claims priority based on Korean Patent Application No. 10-2011-0014787 filed on February 18, 2011, and all the contents disclosed in the specification and drawings of the application are incorporated in this application.
통상적으로 폴리에틸렌은 100 ~ 125 ℃의 녹는점을 갖고 있어서, IEC, ICEA 등의 대부분의 국제 규격에서 규정하고 있는 케이블의 연속 사용 온도 90℃를 만족할 수 없었다. 종래에는 이러한 문제점을 극복하기 위하여 다양한 방법으로 폴리에틸렌을 가교시킨 가교 폴리에틸렌을 절연층의 성분으로 사용하여 왔다. Generally, polyethylene has a melting point of 100 to 125 ° C., and thus it cannot satisfy the continuous use temperature of 90 ° C. of the cable prescribed in most international standards such as IEC and ICEA. Conventionally, in order to overcome such a problem, crosslinked polyethylene crosslinked with polyethylene in various ways has been used as a component of the insulating layer.
그러나 이와 같이 가교 폴리에틸렌을 사용하게 될 경우, 가교 공정의 추가 및 이와 관련된 설비 투자에 따른 비용 증가 문제, 가교시에 발생하는 부산물 등의 이물에 의한 케이블의 절연 성능이 저하되는 등 새로운 문제점들이 발생하게 되었다.However, when the crosslinked polyethylene is used as described above, new problems arise, such as a cost increase due to the addition of a crosslinking process and related equipment investment, and a decrease in the insulation performance of the cable due to foreign substances such as by-products generated during crosslinking. It became.
따라서, 이러한 문제점을 해결하기 위하여 가교되지 않은 수지로 이루어진 절연층을 포함하면서도 케이블에 요구되는 여러가지 물성을 만족할 수 있는 케이블에 관한 필요성이 절실히 대두되었다.Therefore, in order to solve this problem, there is an urgent need for a cable including an insulating layer made of uncrosslinked resin, which can satisfy various properties required for the cable.
상기와 같은 문제점을 해결하기 위하여, 본 발명은 비가교 수지를 함유하는 절연층을 포함하면서 기계적 물성이 우수한 케이블을 제공하는 것이다.In order to solve the above problems, the present invention is to provide a cable having excellent mechanical properties while including an insulating layer containing a non-crosslinked resin.
상기 목적을 달성하기 위한 본 발명의 일 양태에 따른 케이블은 적어도 하나의 도체 및 상기 도체를 감싸는 절연층을 포함한다. A cable according to an aspect of the present invention for achieving the above object includes at least one conductor and an insulating layer surrounding the conductor.
상기 절연층은 폴리프로필렌 수지와 에틸렌-프로필렌공중합체 수지의 혼합물을 포함하며, 상기 혼합물은 끓는 크실렌 용액을 이용한 용출 시험에서 혼합물 총 중량의 60 ~ 70 중량%가 용출되는 것을 특징으로 한다. The insulating layer comprises a mixture of polypropylene resin and ethylene-propylene copolymer resin, wherein the mixture is characterized in that 60 to 70% by weight of the total weight of the mixture is eluted in the dissolution test using a boiling xylene solution.
상기 용출 시험은 끓는 크실렌 용액에 폴리프로필렌 수지와 에틸렌-프로필렌 공중합체 수지의 혼합물을 6시간 동안 용출하는 것에 의해 이루어지고, 상기 크실렌 용액은 138 ~ 144℃의 끓는점을 갖는다. The dissolution test is performed by eluting a mixture of polypropylene resin and ethylene-propylene copolymer resin in a boiling xylene solution for 6 hours, and the xylene solution has a boiling point of 138 to 144 ° C.
본 발명의 케이블은 종래에 절연층의 성분으로 사용하던 가교 폴리에틸렌을 사용하지 않음으로써, 가교 공정을 거침에 따른 비용 증가 문제, 가교 부산물에 의한 절연 성능 저하의 문제점들이 발생하지 않을 뿐만 아니라, 케이블에 요구되는 기계적 물성 등을 만족한다.Since the cable of the present invention does not use crosslinked polyethylene, which is conventionally used as a component of the insulating layer, the cost increase due to the crosslinking process and the problem of deterioration of insulation performance due to crosslinking byproducts do not occur. It satisfies the required mechanical properties.
본 명세서에 첨부되는 다음의 도면들은 본 발명의 바람직한 실시예를 예시하는 것이며, 후술할 발명의 상세한 설명과 함께 본 발명의 기술사상을 더욱 이해시키는 역할을 하는 것이므로, 본 발명은 그러한 도면에 기재된 사항에만 한정되어 해석되어서는 아니된다.The following drawings attached to this specification are illustrative of preferred embodiments of the present invention, and together with the detailed description of the invention to be described later serve to further understand the technical spirit of the present invention, the present invention is a matter described in such drawings It should not be construed as limited to.
도 1은 전형적인 구조의 케이블의 단면도를 나타낸다.1 shows a cross-sectional view of a cable of a typical structure.
이하, 본 발명을 자세히 설명한다. Hereinafter, the present invention will be described in detail.
도 1에는 통상적으로 사용되는 절연 케이블의 구조가 도시되어 있다. 도 1을 참조하면, 상기 절연 케이블은 적어도 하나 이상의 도체(11), 내부 반도전층(12), 절연층(13), 외부 반도전층(14), 차폐층(15) 및 시스층(16)이 차례로 배치된 구조를 갖는다.Figure 1 shows the structure of a commonly used insulated cable. Referring to FIG. 1, the insulated cable includes at least one conductor 11, an inner semiconducting layer 12, an insulating layer 13, an outer semiconducting layer 14, a shielding layer 15, and a sheath layer 16. It has a structure arranged in turn.
종래에는 상기 절연층(13)의 재료로서 주로 가교 폴리에틸렌을 사용하였다.그러나, 본 발명은 상기 적어도 하나 이상의 도체를 감싸는 절연층(13)이 폴리프로필렌 수지와 에틸렌-프로필렌공중합체 수지의 혼합물을 포함하는 것을 특징으로 한다. Conventionally, crosslinked polyethylene is mainly used as a material of the insulating layer 13. However, in the present invention, the insulating layer 13 surrounding the at least one conductor comprises a mixture of polypropylene resin and ethylene-propylene copolymer resin. Characterized in that.
본 발명에 따른 상기 혼합물은 녹는점이 155~165℃인 폴리프로필렌 수지 30~40중량%와 녹는점이 100~140℃인 에틸렌-프로필렌공중합체 수지 60~70중량%를 포함한다. The mixture according to the present invention contains 30 to 40% by weight of polypropylene resin having a melting point of 155 to 165 ° C and 60 to 70% by weight of ethylene-propylene copolymer resin having a melting point of 100 to 140 ° C.
이렇게 절연층의 재료로서 비가교 수지인 폴리프로필렌 수지와 에틸렌-프로필렌공중합체 수지의 혼합물을 사용하게 되면, 별도로 가교 공정을 거치지 않고서도 높은 내열성을 가질 수 있다.When a mixture of a polypropylene resin, which is a non-crosslinked resin, and an ethylene-propylene copolymer resin, is used as the material of the insulating layer, it can have high heat resistance without undergoing a crosslinking process separately.
특히, 본 발명에 따른 상기 폴리프로필렌 수지와 에틸렌-프로필렌공중합체 수지의 혼합물은 끓는 크실렌 용액을 이용한 용출 시험에서 혼합물 총 중량의 60 ~ 70 중량%가 용출되는 특성을 가진다.In particular, the mixture of the polypropylene resin and the ethylene-propylene copolymer resin according to the present invention has the property that 60 to 70% by weight of the total weight of the mixture is eluted in the dissolution test using a boiling xylene solution.
상기 용출 시험은 끓는 크실렌 용액에 폴리프로필렌 수지와 에틸렌-프로필렌공중합체 수지의 혼합물을 약 6 시간 동안 용출하는 것으로서, 상기 혼합물 총 중량의 60 ~ 70 중량%가 용출된다. 상기 용출 시험에서 크실렌의 끓는점보다 낮은 녹는점을 가진 수지가 용출되며, 용출되는 수지는 낮은 입체규칙도(isotacticity)를 갖는다. 즉, 용출된 수지의 중량%가 높을수록 상기 폴리프로필렌 수지와 에틸렌-프로필렌공중합체 수지의 혼합물에 낮은 입체규칙도를 갖는 수지가 많이 포함되어 있다는 것을 의미한다. 이와 같이 낮은 입체규칙도를 갖는 수지가 많이 포함된 폴리프로필렌 수지와 에틸렌-프로필렌공중합체 수지의 혼합물은 케이블의 압출 공정에 포함된 냉각 공정에서 느린 결정화 속도를 갖기 때문에 양호한 신장율을 발휘할 수 있다.In the dissolution test, a mixture of polypropylene resin and ethylene-propylene copolymer resin is eluted in a boiling xylene solution for about 6 hours, and 60 to 70% by weight of the total weight of the mixture is eluted. In the dissolution test, a resin having a melting point lower than the boiling point of xylene is eluted, and the eluted resin has a low isotacticity. That is, the higher the weight percent of the eluted resin, the more the resin having a low stereoregularity is contained in the mixture of the polypropylene resin and the ethylene-propylene copolymer resin. The mixture of polypropylene resin and ethylene-propylene copolymer resin containing a lot of resin having low stereoregularity can exhibit good elongation rate because of slow crystallization rate in the cooling process included in the cable extrusion process.
이렇게, 끓는 크실렌 용액에서 폴리프로필렌 수지와 에틸렌-프로필렌공중합체 수지의 혼합물 총 중량의 60 ~ 70 중량%가 용출될 때 케이블에서 요구하는 신장율을 만족할 수 있다. 상기 용출된 수지의 중량%가 60 중량% 미만일 경우에는 케이블의 압출 공정에 포함된 냉각 공정에서 빠른 결정화 속도를 갖기 때문에 신장율 저하를 야기하며, 상기 용출된 수지의 중량%가 70중량%를 초과할 경우에는 가열 노화시험에서 요구되는 기계적 물성을 만족하기가 어렵다.In this way, when the elution of 60 to 70% by weight of the total weight of the mixture of the polypropylene resin and the ethylene-propylene copolymer resin in the boiling xylene solution can satisfy the elongation required by the cable. When the weight percent of the eluted resin is less than 60 weight percent, elongation rate is lowered because it has a fast crystallization rate in the cooling process included in the cable extrusion process, and the weight percent of the eluted resin may exceed 70 weight percent. In this case, it is difficult to satisfy the mechanical properties required in the heat aging test.
상기 크실렌의 끓는점은 138 내지 144℃이다. 이러한 크실렌으로서 오르토(ortho)-크실렌, 메타(meta)-크실렌, 파라(para)-크실렌 또는 이들을 2종 이상 혼합한 혼합물을 사용할 수 있다.The boiling point of the xylene is 138 to 144 ° C. As such xylene, ortho-xylene, meta-xylene, para-xylene or a mixture of two or more thereof can be used.
본 발명에 따른 상기 혼합물은 녹는점이 155~165℃인 폴리프로필렌 수지 30~40중량%와 녹는점이 100~140℃인 에틸렌-프로필렌공중합체 수지 60~70중량%를 양축 압출기를 이용하여 용융상태에서 기계적으로 혼합하는 것에 의해 제조된다. 또한, 다른 방법으로, 본 발명에 따른 상기 혼합물은 상기 폴리프로필렌 수지와 상기 에틸렌-프로필렌의 순차적인 중합반응을 통해서도 제조될 수 있다. The mixture according to the present invention has a melting point of 30 to 40% by weight of polypropylene resin having a melting point of 155 ~ 165 ℃ and 60 to 70% by weight of an ethylene-propylene copolymer resin having a melting point of 100 ~ 140 ℃ in a molten state using a twin screw extruder It is produced by mechanical mixing. Alternatively, the mixture according to the present invention may also be prepared through sequential polymerization of the polypropylene resin and the ethylene-propylene.
이하 실시예를 들어 본 발명을 더 구체적으로 설명한다. 본 발명이 속하는 분야의 평균적 기술자는 아래 실시예에 기재된 실시 태양 외에 여러 가지 다른 형태로 본 발명을 변경할 수 있으며, 이하 실시예는 본 발명을 예시할 따름이지 본 발명의 기술적 사상의 범위를 아래 실시예 범위로 한정하기 위한 의도라고 해석해서는 아니된다. The present invention will be described in more detail with reference to the following Examples. The average person skilled in the art to which the present invention pertains may change the present invention in various other forms in addition to the embodiments described in the following examples, and the following examples merely illustrate the present invention, and the scope of the technical spirit of the present invention is given below. It is not to be construed as limiting the scope of the examples.
<실시예 1><Example 1>
녹는점이 165℃인 폴리프로필렌 수지(SK종합화학, H920Y) 35중량%와 녹는점이 107℃인 에틸렌-프로필렌공중합체 수지(DOW, DP2000.01) 65중량%를 양축압출기를 이용하여 용융한 상태에서 혼합하여 실시예 1의 혼합물을 제조한다. 이때, 이렇게 제조된 혼합물을 끓는 크실렌 용액에 약 6 시간 동안 용출할 경우 하기 표 1과 같은 양으로 용출된다. 35% by weight of polypropylene resin (SK Synthetic Chemical, H920Y) having a melting point of 165 ° C and 65% by weight of ethylene-propylene copolymer resin (DOW, DP2000.01) having a melting point of 107 ° C were melted using a twin screw extruder. Mix to prepare the mixture of Example 1. In this case, when the mixture thus prepared is eluted in a boiling xylene solution for about 6 hours, it is eluted in an amount as shown in Table 1 below.
<실시예 2><Example 2>
프로필렌의 중합 반응과 에틸렌-프로필렌의 공중합 반응을 순차적으로 일으켜 녹는점이 162℃인 폴리프로필렌 수지와 녹는점이 117℃인 에틸렌-프로필렌공중합체의 혼합물(Basell, Q200F)을 제조하였다. 이때, 순차적인 공중합반응에 의해 폴리프로필렌 수지는 31중량%, 에틸렌-프로필렌 공중합체는 69중량%가 생성된다. A polymerization reaction of propylene and a copolymerization reaction of ethylene-propylene were sequentially performed to prepare a mixture of polypropylene resin having a melting point of 162 ° C. and an ethylene-propylene copolymer having a melting point of 117 ° C. (Basell, Q200F). At this time, 31% by weight of the polypropylene resin, 69% by weight of the ethylene-propylene copolymer is produced by the sequential copolymerization reaction.
<비교예 1>Comparative Example 1
녹는점이 165℃인 폴리프로필렌 수지(SK종합화학, H920Y) 45중량%와 녹는점이 107℃인 에틸렌-프로필렌공중합체 수지(DOW, DP2000.01) 55중량%를 양축압출기를 이용하여 용융한 상태에서 혼합하여 비교예 1의 혼합물을 제조한다. 이때, 이렇게 제조된 혼합물을 끓는 크실렌 용액에 약 6 시간 동안 용출할 경우 하기 표 1과 같은 양으로 용출된다. 45% by weight of polypropylene resin (SK Synthetic Chemical, H920Y) having a melting point of 165 ° C and 55% by weight of ethylene-propylene copolymer resin (DOW, DP2000.01) having a melting point of 107 ° C were melted using a twin screw extruder. Mixing to prepare a mixture of Comparative Example 1. In this case, when the mixture thus prepared is eluted in a boiling xylene solution for about 6 hours, it is eluted in an amount as shown in Table 1 below.
<비교예 2>Comparative Example 2
녹는점이 165℃인 폴리프로필렌 수지(SK종합화학, H920Y) 25중량%와 녹는점이 107℃인 에틸렌-프로필렌공중합체 수지(DOW, DP2000.01) 75중량%를 양축압출기를 이용하여 용융한 상태에서 혼합하여 비교예 2의 혼합물을 제조한다. 이때, 이렇게 제조된 혼합물을 끓는 크실렌 용액에 약 6 시간 동안 용출할 경우 하기 표 1과 같은 양으로 용출된다. 25% by weight of polypropylene resin (SK Synthetic Chemical, H920Y) having a melting point of 165 ° C and 75% by weight of ethylene-propylene copolymer resin (DOW, DP2000.01) having a melting point of 107 ° C were melted using a twin screw extruder. Mixing to prepare a mixture of Comparative Example 2. In this case, when the mixture thus prepared is eluted in a boiling xylene solution for about 6 hours, it is eluted in an amount as shown in Table 1 below.
표 1
실시예 1 실시예 2 비교예 1 비교예 2
끓는 크실렌 용액에서 용출된 양(중량%) 62 68 57 72
Table 1
Example 1 Example 2 Comparative Example 1 Comparative Example 2
The amount eluted from the boiling xylene solution (% by weight) 62 68 57 72
물성 측정 및 평가Property measurement and evaluation
상기 실시예 1, 실시예 2, 비교예 1 및 비교예 2의 혼합물로 이루어진 절연층을 포함하는 케이블을 각각 제조한다. 이 케이블은 전형적으로 도 1과 같은 구조를 갖는다. 상기 제조된 케이블들에 대해 상온에서의 기계적 물성(인장 강도, 인장 신율), 가열후 기계적 물성(인장 강도, 신장 잔율) 및 압출기 수지 압력을 측정한 결과를 아래 표 2에 정리하였고, 간략한 실험 조건은 다음과 같다.Each cable including an insulating layer made of a mixture of Example 1, Example 2, Comparative Example 1 and Comparative Example 2 is prepared. This cable typically has a structure as shown in FIG. The measured results of the mechanical properties (tensile strength, tensile elongation), mechanical properties (tensile strength, elongation residual) and extruder resin pressure after heating of the manufactured cables are summarized in Table 2 below. Is as follows.
㉠ 상온 기계적 물성 ㉠ Mechanical properties at room temperature
케이블은 IEC 60811-1-1에 준하여 인장속도 250 mm/분으로 측정하였을 때 인장강도는 1.27 kgf/mm2 이상, 인장 신율은 200% 이상이어야 한다.The cable shall have a tensile strength of at least 1.27 kgf / mm 2 and a tensile elongation of at least 200% when measured at a tensile speed of 250 mm / min in accordance with IEC 60811-1-1.
㉡ 가열 후 기계적 물성기계적 Mechanical properties after heating
케이블을 150 ℃에서 168 시간 동안 가열 노화한 후 기계적 물성을 측정하였다. 이때, 인장강도 잔율과 신장 잔율은 최소 75% 이상이어야 한다.The mechanical properties of the cables were measured after heat aging at 150 ° C. for 168 hours. At this time, the tensile strength residual ratio and elongation residual ratio should be at least 75%.
표 2
실시예 1 실시예 2 비교예 1 비교예 2
상온 인장강도(kgf/mm2) 2.2 2.0 1.9 1.7
상온 인장 신율(%) 580 640 105 510
가열 후 인장강도 잔율(%) 85 84 120 용융
가열 후 신장 잔율(%) 90 85 400 용융
TABLE 2
Example 1 Example 2 Comparative Example 1 Comparative Example 2
Room temperature tensile strength (kgf / mm 2 ) 2.2 2.0 1.9 1.7
Room Temperature Tensile Elongation (%) 580 640 105 510
Tensile strength residual after heating (%) 85 84 120 Melting
% Elongation after heating 90 85 400 Melting
상기 표 2에 정리한 바와 같이, 비교예 1의 경우 입체규칙도가 높은(끓는 크실렌 용액에서 용출되는 수지의 양이 폴리프로필렌 수지와 에틸렌-프로필렌공중합체 수지의 혼합물의 57중량%) 폴리프로필렌 수지와 에틸렌-프로필렌공중합체 수지의 혼합물을 사용함에 따라 상온에서의 인장 신율이 좋지 않았다.As summarized in Table 2, in the case of Comparative Example 1 polypropylene resin having a high degree of stereoregularity (the amount of the resin eluted in the boiling xylene solution is 57% by weight of the mixture of polypropylene resin and ethylene-propylene copolymer resin) The tensile elongation at room temperature was not good as a mixture of and ethylene-propylene copolymer resin was used.
비교예 2의 경우 입체규칙도가 낮은(끓는 크실렌 용액에서 용출되는 수지의 양이 폴리프로필렌 수지와 에틸렌-프로필렌공중합체 수지의 혼합물의 72중량%) 폴리프로필렌 수지와 에틸렌-프로필렌공중합체 수지의 혼합물을 사용함에 따라 가열 후 기계적 물성(인장강도 잔율, 신장 잔율)이 좋지 않았다.In Comparative Example 2, a mixture of polypropylene resin and ethylene-propylene copolymer resin having low stereoregularity (72% by weight of the mixture of polypropylene resin and ethylene-propylene copolymer resin eluting in a boiling xylene solution) As used, the mechanical properties (tensile strength residual, elongation residual) after heating were not good.
반면, 본 발명의 실시예 1 및 2의 경우 상온에서의 기계적 물성(상온 인장강도 및 상온 인장 신율) 뿐만 아니라, 가열 후 기계적 물성(인장강도 잔율 및 신장 잔율)에서도 우수한 결과를 나타냈다. 이러한 결과는 최적의 입체규칙도를 갖는 폴리프로필렌 수지와 에틸렌-프로필렌공중합체 수지의 혼합물을 사용한 것에 기인한다.On the other hand, Examples 1 and 2 of the present invention showed excellent results not only in mechanical properties at room temperature (normal tensile strength and room temperature tensile elongation) but also in mechanical properties (tensile strength residual and elongation residual) after heating. This result is due to the use of a mixture of polypropylene resin and ethylene-propylene copolymer resin having an optimum stereoregularity.
이상에서 본 발명은 비록 한정된 실시예와 도면에 의해 설명되었으나, 본 발명은 이것에 의해 한정되지 않으며 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 의해 본 발명의 기술사상과 아래에 기재될 특허청구범위의 균등범위 내에서 다양한 수정 및 변형이 가능함은 물론이다. 또한, 본 명세서 및 청구범위에 사용된 용어나 단어는 통상적이거나 사전적인 의미로 한정해서 해석되어서는 아니되며, 발명자는 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야만 한다. 따라서, 본 명세서에 기재된 실시예와 도면에 도시된 구성은 본 발명의 가장 바람직한 일 실시예에 불과할 뿐이고 본 발명의 기술적 사상을 모두 대변하는 것은 아니므로, 본 출원시점에 있어서 이들을 대체할 수 있는 다양한 균등물과 변형예들이 있을 수 있음을 이해하여야 한다.Although the present invention has been described above by means of limited embodiments and drawings, the present invention is not limited thereto and will be described below by the person skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of the claims. In addition, the terms or words used in the specification and claims are not to be construed as limiting in their usual or dictionary meanings, and the inventors properly define the concept of terms in order to best explain their invention in the best way possible. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention based on the principle that it can. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.
본 발명에 따른 절연재료 조성물은 적어도 하나 이상의 도체와 이 도체를 감싸는 절연 피복층을 포함하는 다양한 구조의 모든 절연 케이블에 적용 가능하다. The insulating material composition according to the present invention is applicable to all insulated cables of various structures including at least one conductor and an insulating coating layer surrounding the conductor.

Claims (3)

  1. 적어도 하나의 도체 및 상기 도체를 감싸는 절연층을 포함하는 케이블에 있어서,A cable comprising at least one conductor and an insulation layer surrounding the conductor,
    상기 절연층은 폴리프로필렌 수지와 에틸렌-프로필렌공중합체 수지의 혼합물을 포함하며, 상기 혼합물은 끓는 크실렌 용액을 이용한 용출 시험에서 혼합물 총 중량의 60 ~ 70 중량%가 용출되는 것을 특징으로 하는 케이블.The insulating layer comprises a mixture of polypropylene resin and ethylene-propylene copolymer resin, the mixture is characterized in that 60 to 70% by weight of the total weight of the mixture in the dissolution test using a boiling xylene solution eluting.
  2. 제 1 항에 있어서,The method of claim 1,
    상기 용출 시험은 끓는 크실렌 용액에 폴리프로필렌 수지와 에틸렌-프로필렌 공중합체 수지의 혼합물을 6시간 동안 용출하는 것을 특징으로 하는 케이블. The dissolution test is characterized in that for eluting the mixture of polypropylene resin and ethylene-propylene copolymer resin in a boiling xylene solution for 6 hours.
  3. 제 2 항에 있어서,The method of claim 2,
    상기 크실렌 용액은 138 ~ 144℃의 끓는 점을 갖는 것을 특징으로 하는 케이블.The xylene solution has a boiling point of 138 ~ 144 ℃ cable.
PCT/KR2012/001160 2011-02-18 2012-02-16 Cables including insulating layer containing non-crosslinked resin WO2012111985A2 (en)

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KR20220050035A (en) 2020-10-15 2022-04-22 한화토탈 주식회사 Polyolefin Resin Composition for Insulation with High Breakdown Voltage and Article Molded Therefrom
JP2022065628A (en) 2020-10-15 2022-04-27 ハンファ トータル ペトロケミカル カンパニー リミテッド Polyolefin resin composition for insulator excellent in withstand voltage characteristic, and molded article manufactured from the same
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