KR20120103296A - Sheath composition for railway vehicles cable with high performance flame retardance and wear retardance - Google Patents
Sheath composition for railway vehicles cable with high performance flame retardance and wear retardance Download PDFInfo
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- H—ELECTRICITY
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- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/56—Insulating bodies
- H01B17/62—Insulating-layers or insulating-films on metal bodies
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- 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
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L31/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid or of a haloformic acid; Compositions of derivatives of such polymers
- C08L31/02—Homopolymers or copolymers of esters of monocarboxylic acids
- C08L31/04—Homopolymers or copolymers of vinyl acetate
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- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
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- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/02—Suspension insulators; Strain insulators
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- 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
- H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
- H01B3/10—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances metallic oxides
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- 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
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- 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
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- 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
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- 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
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
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- 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
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1805—Protections not provided for in groups H01B7/182 - H01B7/26
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- 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
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/292—Protection against damage caused by extremes of temperature or by flame using material resistant to heat
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- 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
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
Abstract
Description
본 발명은 철도차량 케이블용 시스 재료 조성물에 관한 것이다.The present invention relates to a sheath material composition for railway vehicle cables.
철도차량 케이블은 일반 케이블에 비해 매우 가혹한 조건에서 사용되므로 내열성, 내유성 등에 있어서 뛰어난 특성을 갖추어야 하며, 하네스 작업이나 케이블 간의 마찰 등에 의해 발생하는 마모에 견딜 수 있는 내마모성을 가져야 한다. 또한 철도차량에 화재가 발생하였을 때 인명과 화물 및 장비의 안전성 확보와 손실의 최소화를 위해서는 난연성 등의 화재 안정성을 필수적으로 갖추어야 한다.Since railway vehicle cables are used in much harsher conditions than general cables, they must have excellent characteristics in heat resistance, oil resistance, etc., and have abrasion resistance that can withstand wear caused by harness work or friction between cables. In addition, fire safety, such as flame retardance, must be indispensable to ensure the safety of human life, cargo and equipment, and to minimize losses when fire occurs in railway vehicles.
종래에는 주로 철도차량 케이블의 시스 재료로서 폴리비닐 클로라이드, 폴리클로로프렌이나 폴리클로로네이티드 폴리에틸렌과 같이 할로겐을 함유한 기본 수지가 사용되었다. 그런데, 이러한 할로겐을 함유하는 기본 수지는 독성 지수가 높을 뿐만 아니라 난연성이 좋지 못하다는 단점이 있다.Conventionally, halogen-containing basic resins such as polyvinyl chloride, polychloroprene or polychloroated polyethylene have been mainly used as sheath materials for railway vehicle cables. However, these halogen-containing base resins have a disadvantage of not only high toxicity index but also poor flame retardancy.
이러한 문제점을 해결하고자, 할로겐을 포함하지 않는 기본 수지를 사용하고 할로겐-프리 난연제로서 금속 수산화물을 다량 사용하는 방법이 제시되었다. 그러나, 이러한 다량의 난연제로 인하여 기계적 물성과 고온에서의 가열 후 특성이 현저하게 저하되는 등 문제점이 생겼다.To solve this problem, a method of using a basic resin containing no halogen and using a large amount of metal hydroxide as a halogen-free flame retardant has been proposed. However, such a large amount of flame retardant has a problem such that the mechanical properties and properties after heating at high temperature is significantly reduced.
상기와 같은 문제점을 해결하기 위하여 본 발명은 난연성과 내마모성이 뛰어난 철도차량 케이블용 시스 재료 조성물을 제공한다.In order to solve the above problems, the present invention provides a sheath material composition for a railway vehicle cable excellent in flame retardancy and wear resistance.
상기 목적을 달성하기 위하여, 본 발명의 난연성과 내마모성이 뛰어난 철도차량 케이블용 시스 재료 조성물은 열가소성 폴리에스테르 엘라스토머(TPEE) 수지 20 내지 60 중량%, 에틸렌 비닐 아세테이트(EVA) 수지 35 내지 65 중량% 및 말레산 무수물로 그래프트된 폴리에틸렌(PE) 수지 또는 에틸렌 비닐 아세테이트(EVA) 수지 5 내지 30 중량%가 혼합된 혼합 수지를 기본수지로 사용하며, 상기 기본 수지 100 중량부에 대하여, 난연제 130 내지 180 중량부를 포함한다.In order to achieve the above object, the sheath material composition for railway vehicle cables excellent in flame retardancy and wear resistance of the present invention is 20 to 60% by weight thermoplastic polyester elastomer (TPEE) resin, 35 to 65% by weight ethylene vinyl acetate (EVA) resin and A mixed resin mixed with 5 to 30% by weight of polyethylene (PE) resin or ethylene vinyl acetate (EVA) resin grafted with maleic anhydride is used as a base resin, and 130 to 180 weight of a flame retardant based on 100 parts by weight of the base resin. Contains wealth.
본 발명의 시스 재료 조성물을 이용하여 제조한 시스는 난연성 및 내마모성이 우수하여 철도차량 케이블에 유용하게 적용할 수 있다.The sheath prepared by using the sheath material composition of the present invention is excellent in flame retardancy and abrasion resistance and can be usefully applied to railway vehicle cables.
이하에서 본 발명을 상세히 설명한다.Hereinafter, the present invention will be described in detail.
본 발명은 열가소성 폴리에스테르 엘라스토머(TPEE) 수지 20 내지 60 중량%, 에틸렌 비닐 아세테이트(EVA) 수지 35 내지 65 중량% 및 말레산 무수물로 그래프트된 폴리에틸렌(PE) 수지 또는 에틸렌 비닐 아세테이트(EVA) 수지 5 내지 30 중량%가 혼합된 혼합 수지를 기본수지로 사용하며, 상기 기본 수지 100 중량부에 대하여, 난연제 130 내지 180 중량부를 포함하여 이루어지는 것을 특징으로 하는 난연성 및 내마모성이 우수한 철도차량 케이블용 시스 재료 조성물을 제공한다.The present invention relates to a polyethylene (PE) resin or an ethylene vinyl acetate (EVA) resin grafted with 20 to 60% by weight thermoplastic polyester elastomer (TPEE) resin, 35 to 65% by weight ethylene vinyl acetate (EVA) resin and maleic anhydride. Sheath material composition for railway vehicle cables excellent in flame retardancy and wear resistance, characterized by using a mixed resin mixed with 30 to 30% by weight as a base resin, and comprises 130 to 180 parts by weight of a flame retardant based on 100 parts by weight of the base resin. To provide.
본 발명의 열가소성 폴리에스테르 엘라스토머(TPEE) 수지는 기본수지의 20 내지 60 중량%가 바람직하며, 상기 함량과 관련하여, 20 중량% 미만일 경우에는 내마모성이 저하되며 60 중량%를 초과할 경우에는 압출성 및 가공성이 저하되며 제조 비용이 증가하는 문제점이 있다.The thermoplastic polyester elastomer (TPEE) resin of the present invention is preferably 20 to 60% by weight of the base resin, with respect to the content, when less than 20% by weight, wear resistance is lowered, and when it exceeds 60% by weight, extrudability And there is a problem that the workability is lowered and the manufacturing cost increases.
본 발명의 에틸렌 비닐 아세테이트(EVA) 수지는 기본수지의 35 내지 65 중량%가 바람직하며, 상기 함량과 관련하여 35 중량% 미만일 경우에는 필러 로딩(filler loading) 특성, 가공성 및 압출성이 저하되며, 65 중량%를 초과할 경우에는 내마모성이 저하된다.Ethylene vinyl acetate (EVA) resin of the present invention is preferably 35 to 65% by weight of the base resin, when the content is less than 35% by weight in relation to the content filler loading (filler loading) properties, processability and extrudability is reduced, When it exceeds 65 weight%, abrasion resistance falls.
상기 말레산 무수물로 그래프트된 폴리에틸렌(PE) 수지 또는 에틸렌 비닐 아세테이트(EVA) 수지는 말레산 무수물의 함량이 0.6 내지 3 %이며, 바람직하게 0.5 내지 1.5 %이다. 상기 말레산 무수물의 함량이 0.6 % 미만인 경우에는 난연제와 기본수지 간의 계면 결합력이 약해져 내마모성이 저하되며, 상기 말레산 무수물의 함량이 3 %를 초과하는 경우에는 내 마모성은 향상되나 제조 비용이 상승되는 단점이 있다.The polyethylene (PE) resin or ethylene vinyl acetate (EVA) resin grafted with maleic anhydride has a content of maleic anhydride of 0.6 to 3%, preferably 0.5 to 1.5%. When the content of the maleic anhydride is less than 0.6%, the interfacial bonding force between the flame retardant and the base resin is weakened, and the wear resistance is lowered. When the content of the maleic anhydride is more than 3%, the wear resistance is improved, but the manufacturing cost is increased. There are disadvantages.
상기 말레산 무수물로 그래프트된 폴리에틸렌(PE) 수지 또는 에틸렌 비닐 아세테이트(EVA) 수지는 0.5 내지 5 g/10분의 용융지수(MI)를 가지며, 바람직하게 0.5 내지 3 g/10분의 용융지수(MI)를 갖는다. 상기 용융지수와 관련하여 0.5 g/10분 미만인 경우에는 흐름성이 낮아 압출 가공시 부하가 많이 걸리고 외관이 좋지 못하며, 5 g/10분을 초과하는 경우에는 가공성은 우수하나 내마모성 등의 물성이 저하된다. The polyethylene (PE) resin or ethylene vinyl acetate (EVA) resin grafted with maleic anhydride has a melt index (MI) of 0.5 to 5 g / 10 minutes, preferably a melt index of 0.5 to 3 g / 10 minutes ( MI). If the melt index is less than 0.5 g / 10 minutes, the flowability is low, and a lot of load is exerted and the appearance is not good, and when it exceeds 5 g / 10 minutes, the workability is excellent but physical properties such as wear resistance are deteriorated. do.
이러한 말레산 무수물로 그래프트된 폴리에틸렌(PE) 수지 또는 에틸렌 비닐 아세테이트(EVA) 수지는 기본수지의 5 내지 30 중량%로 함유되며, 바람직하게 5 내지 15 중량%로 함유된다. 상기 함량과 관련하여 5 중량% 미만인 경우에는 내마모성이 저하되며, 30 중량%를 초과하는 경우에는 내마모성은 향상되나 유연성이 저하된다.The polyethylene (PE) resin or ethylene vinyl acetate (EVA) resin grafted with maleic anhydride is contained in 5 to 30% by weight of the base resin, preferably 5 to 15% by weight. If the content is less than 5% by weight, the wear resistance is lowered. If the content is more than 30% by weight, the wear resistance is improved, but the flexibility is lowered.
상기 난연제는 비닐실란, 아미노실란 및 지방산으로 구성된 군으로부터 선택된 1종 이상으로 표면처리된 금속수산화물이며, 바람직하게 비닐실란으로 표면처리된 금속수산화물이다. 이와 같이 표면처리된 난연제를 사용함으로써 케이블의 내마모성을 향상시킬 수 있으며, 상기 금속수산화물로서 수산화알루미늄, 수산화마그네슘, 수산화칼슘, 하이드로탈사이트, 하이드로마그네사이트 등을 사용할 수 있다. The flame retardant is a metal hydroxide surface-treated with at least one selected from the group consisting of vinylsilane, aminosilane and fatty acids, preferably metal hydroxides surface-treated with vinylsilane. By using the surface-treated flame retardant as described above, the wear resistance of the cable can be improved, and as the metal hydroxide, aluminum hydroxide, magnesium hydroxide, calcium hydroxide, hydrotalcite, hydromagnesite and the like can be used.
상기 난연제는 0.3 내지 1.5 마이크로미터의 입자 직경을 가지며, 바람직하게 0.5 내지 1 마이크로미터의 입자 직경을 가진다. 상기 입자 직경과 관련하여 0.3 마이크로미터 미만일 경우에는 내마모성은 향상되나 분산성이 저하되어 난연성이 저하되게 되며, 1.5 마이크로미터를 초과하는 경우에는 분산성은 향상되나 내마모성이 저하된다.The flame retardant has a particle diameter of 0.3 to 1.5 micrometers and preferably has a particle diameter of 0.5 to 1 micrometer. If the particle diameter is less than 0.3 micrometer, the wear resistance is improved, but the dispersibility is lowered, and the flame retardancy is lowered. If the particle size exceeds 1.5 micrometer, the dispersibility is improved, but the wear resistance is lowered.
상기 난연제는 2 내지 3의 모스 경도를 가지며, 상기 모스 경도가 2 미만일 경우에는 유연성은 향상되나 내마모성이 저하되며, 상기 모스 경도가 3을 초과하는 경우에는 내마모성은 향상되나 유연성이 감소되어 케이블의 포설이 용이하지 않게 된다.The flame retardant has a Mohs hardness of 2 to 3, when the Mohs hardness is less than 2, the flexibility is improved, but the wear resistance is lowered. When the Mohs hardness is more than 3, the wear resistance is improved, but the flexibility is reduced and the cable is laid. This is not easy.
이러한 난연제는 기본수지 100 중량부에 대하여 130 내지 180 중량부로 포함되며, 바람직하게 140 내지 160 중량부로 포함된다. 상기 함량과 관련하여, 130 중량부 미만일 경우에는 내마모성은 향상되나 난연성이 감소되며, 180 중량부를 초과할 경우에는 난연성은 향상되나 내마모성이 감소된다.Such a flame retardant is included in an amount of 130 to 180 parts by weight, preferably 140 to 160 parts by weight, based on 100 parts by weight of the base resin. With respect to the content, less than 130 parts by weight of the wear resistance is improved but the flame retardancy is reduced, and if it exceeds 180 parts by weight, the flame resistance is improved but wear resistance is reduced.
또한 본 발명은 상기 난연성 및 내마모성이 우수한 철도차량 케이블용 시스 재료 조성물로 형성된 시스층을 포함하는 것을 특징으로 하는 철도차량용 신호 케이블을 제공한다.
The present invention also provides a railway vehicle signal cable comprising a sheath layer formed of the sheath material composition for railway vehicle cables excellent in flame retardancy and wear resistance.
[실시예][Example]
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.
Hereinafter, the present invention will be described more specifically by way of examples. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims and their equivalents. It should not be construed as an intention to limit the scope to example.
본 발명의 난연성 및 내마모성이 우수한 철도차량 케이블용 시스 재료 조성물의 성분에 따른 성능 변화를 살펴보기 위하여 아래 표 1에 나타낸 조성으로 실시예와 비교예의 시스 재료 조성물을 제조하였다. 이때, 상기 조성물은 열가소성 폴리에스테르 엘라스토머(TPEE) 수지 55 중량%, 에틸렌 비닐 아세테이트(EVA) 수지 35 중량% 및 말레산 무수물로 그래프트된 폴리에틸렌(PE) 수지 10 중량%로 이루어진 기본수지 100 중량부에 대하여 하기 함량의 난연제를 포함한다.In order to examine the performance change according to the components of the sheath material composition for railway vehicle cables excellent in the flame resistance and wear resistance of the present invention, the sheath material compositions of Examples and Comparative Examples were prepared. At this time, the composition is 100 parts by weight of the base resin consisting of 55% by weight thermoplastic polyester elastomer (TPEE) resin, 35% by weight ethylene vinyl acetate (EVA) resin and 10% by weight polyethylene (PE) resin grafted with maleic anhydride The flame retardant of the following content is included.
(g/10분)Melt Index
(g / 10 min)
(㎛)Particle diameter
(Μm)
경도Morse
Hardness
(중량부)content
(Parts by weight)
수산화마그네슘Surface-treated with fatty acids
Magnesium hydroxide
수산화마그네슘Surface-treated with fatty acids
Magnesium hydroxide
수산화마그네슘Magnesium hydroxide
물성 측정 및 평가Measurement and evaluation of physical properties
상기 실시예(1~3) 및 비교예(1~7)에 따르는 시스 재료 조성물을 이용하여 시스를 제조하였고, 상기 시스를 구비하는 철도차량용 신호 케이블을 통상의 방법에 의해 제조하였다. 실시예와 비교예의 조성물에 의해 제조된 각각의 케이블 시편에 대하여 2종류의 난연성 시험 및 내마모성 시험을 실시한 결과를 아래 표 2에 정리하였다. 간략한 실험 조건은 다음과 같다.A sheath was manufactured using the sheath material composition according to Examples (1 to 3) and Comparative Examples (1 to 7), and a signal cable for a railway vehicle having the sheath was manufactured by a conventional method. Table 2 below shows the results of two types of flame retardancy test and abrasion resistance test for each cable specimen prepared by the compositions of Examples and Comparative Examples. Brief experimental conditions are as follows.
㉠ 난연성(IEC 60332-1)㉠ flame retardancy (IEC 60332-1)
IEC 60332-1에 따라 시편의 난연성을 측정하였다. 길이 600 mm 및 외경 6 mm의 시편에 45도 각도로 불꽃을 60초 동안 인가한 후 불꽃을 제거하여 총 연소한 길이가 상부로부터 475 mm 이하, 하부로부터 65 mm 이하여야 한다.The flame retardancy of the specimens was measured according to IEC 60332-1. After 60 seconds of application of flame at a 45 degree angle to specimens of 600 mm in length and 6 mm in diameter, the flame is removed so that the total burned length shall not exceed 475 mm from the top and 65 mm from the bottom.
㉡ 난연성(IEC 60332-3)㉡ flame retardancy (IEC 60332-3)
IEC 60332-3에 따라 시편의 난연성을 측정하였다. 3.5 m의 시편 70개를 10개씩 묶어 7개 묶음으로 설치하고 90도 각도로 불꽃을 20분 동안 인가한 후 불꽃을 제거하여 총 연소한 길이가 2.5 m 이하여야 한다.The flame retardancy of the specimens was measured according to IEC 60332-3. 70 bundles of 3.5 m specimens shall be installed in 10 bundles of 7 specimens, with flame applied at a 90-degree angle for 20 minutes.
㉢ 내마모성(ISO 6722)㉢ Wear resistance (ISO 6722)
ISO 6722에 따라 시편의 내마모성을 측정하였다. 시료 표면에 니들(needle)에 의한 마찰과 9N 크기의 하중이 가해져 시편 위에서 일정한 왕복 운동을 하여 마모에 의해 시편이 끊어지는 시기까지의 왕복 횟수를 측정하였다. 왕복 횟수가 클수록 내마모성이 우수하다. The wear resistance of the specimens was measured according to ISO 6722. Friction by a needle and a load of size 9N were applied to the surface of the sample, and the number of reciprocations until the time when the specimen was broken by wear was measured by performing a constant reciprocating motion on the specimen. The greater the number of round trips, the better the wear resistance.
: 상부로부터 연소한 길이(mm)Flame retardant (IEC 60332-1)
: Length burned from the top (mm)
: 연소한 길이(m)Flame Retardant (IEC 60332-3)
: Burned length (m)
: 마모 횟수Wear resistance (ISO 6722)
: Number of wear
상기 난연성(IEC 60332-1) 시험에서 실시예 1 내지 3 및 비교예 1 내지 7 모두, 하부로부터 연소한 길이가 30 ~ 50 mm로서 기준치를 만족하여 표 2에 하부로부터 연소한 길이는 생략하였다. In Examples 1 to 3 and Comparative Examples 1 to 7 in the flame retardancy test (IEC 60332-1), the length burned from the bottom was omitted in Table 2 because the length burned from the bottom satisfies the reference value as 30 to 50 mm.
한편, 상기 표 2의 결과로부터 알 수 있는 바와 같이, 본 발명의 경우 2 종류의 난연성 시험에서 모두 기준치를 만족하였고 내마모성도 상당히 우수하였다.On the other hand, as can be seen from the results of Table 2, in the case of the present invention, both of the flame retardancy test satisfies the reference value and the wear resistance was also very good.
반면, 비교예 1의 경우 본 발명에 비하여 내마모성이 상당히 미약하였으며, 이러한 결과가 발생한 것은 본 발명에서 한정한 입자 크기를 벗어난(1.5 마이크로미터 초과) 난연제를 사용하였기 때문이다.On the other hand, in Comparative Example 1, the wear resistance was considerably weaker than that of the present invention, and this result was due to the use of a flame retardant outside the particle size defined in the present invention (greater than 1.5 micrometers).
비교예 2의 경우에도 본 발명에 비하여 내마모성이 상당히 미약하였으며, 이러한 결과가 발생한 것은 표면처리가 되지 않은 난연제를 사용하였기 때문이다.In the case of Comparative Example 2, the wear resistance was considerably weaker than in the present invention, and this result occurred because a flame retardant was not used.
비교예 3의 경우에도 본 발명에 비하여 내마모성이 상당히 미약하였으며, 이러한 결과가 발생한 것은 본 발명에서 한정한 모스 경도보다 작은 모스 경도(1)를 갖는 난연제를 사용하였기 때문이다.Also in Comparative Example 3, the wear resistance was considerably weaker than in the present invention, and this result occurred because a flame retardant having a Mohs hardness (1) smaller than the Mohs hardness defined in the present invention was used.
비교예 4의 경우에도 본 발명에 비하여 내마모성이 상당히 미약하였으며, 이러한 결과가 발생한 것은 본 발명에서 한정한 말레산 무수물의 함량보다 작은 함량(0.5 %)을 가진 말레산 무수물로 그래프트된 폴리에틸렌(PE) 수지를 사용하였기 때문이다.In the case of Comparative Example 4, the wear resistance was considerably weaker than that of the present invention, and this result occurred in polyethylene (PE) grafted with maleic anhydride having a content (0.5%) less than the content of maleic anhydride defined in the present invention. It is because resin was used.
비교예 5의 경우에도 본 발명에 비하여 내마모성이 상당히 미약하였으며, 이러한 결과가 발생한 것은 본 발명에서 한정한 용융지수(MI)보다 큰(17 g/10분) 용융지수를 갖는 말레산 무수물로 그래프트된 폴리에틸렌(PE) 수지를 사용하였기 때문이다.Even in Comparative Example 5, the wear resistance was considerably weaker than that of the present invention, and the result was grafted with maleic anhydride having a melt index larger than the melt index (MI) defined in the present invention (17 g / 10 min). This is because a polyethylene (PE) resin is used.
비교예 6의 경우에도 본 발명에 비하여 내마모성이 상당히 미약하였으며, 이러한 결과가 발생한 것은 본 발명에서 한정한 함량보다 많은(190 중량부) 함량의 난연제를 사용하였기 때문이다.The wear resistance of Comparative Example 6 was also considerably weaker than that of the present invention, and this result was caused by the use of a flame retardant having a content of more than 190 parts by weight.
비교예 7의 경우 내마모성은 우수하였으나, 난연성 시험에서 기준치를 만족하지 못하였다. 이러한 결과가 발생한 것은 본 발명에서 한정한 함량보다 적은(120 중량부) 함량의 난연제를 사용하였기 때문이다.
In Comparative Example 7, the wear resistance was excellent, but the reference value was not satisfied in the flame resistance test. This result occurs because a flame retardant having a content of less than 120 parts by weight is limited.
위와 같이 본 발명의 최적 실시예들을 개시하였다. 본 실시예를 포함하는 명세서에서 특정한 용어들이 사용되었으나, 이는 단지 당업자에게 본 발명을 상세히 설명하기 위한 목적에서 사용된 것이지 의미를 한정하거나 특허청구범위에 기재된 본 발명의 범위를 제한하기 위해 사용된 것이 아님을 밝혀 둔다. As described above, optimal embodiments of the present invention have been disclosed. Although specific terms have been used in the specification including the present embodiment, it is only used for the purpose of describing the present invention to those skilled in the art in detail and used to limit the meaning or limit the scope of the present invention described in the claims. Make it clear.
Claims (7)
상기 기본 수지 100 중량부에 대하여,
난연제 130 내지 180 중량부를 포함하여 이루어지는 것을 특징으로 하는 난연성 및 내마모성이 우수한 철도차량 케이블용 시스 재료 조성물.20 to 60 wt% thermoplastic polyester elastomer (TPEE) resin, 35 to 65 wt% ethylene vinyl acetate (EVA) resin and 5 to 30 wt% polyethylene (PE) resin or ethylene vinyl acetate (EVA) resin grafted with maleic anhydride Mixed resin mixed with% is used as basic resin,
Per 100 parts by weight of the base resin,
Sheath material composition for a railway vehicle cable excellent in flame retardancy and abrasion resistance, comprising 130 to 180 parts by weight of a flame retardant.
상기 말레산 무수물로 그래프트된 폴리에틸렌(PE) 수지 또는 에틸렌 비닐 아세테이트(EVA) 수지는 말레산 무수물의 함량이 0.6 내지 3 %인 것을 특징으로 하는 난연성 및 내마모성이 우수한 철도차량 케이블용 시스 재료 조성물.The method of claim 1,
The polyethylene (PE) resin or ethylene vinyl acetate (EVA) resin grafted with maleic anhydride has a sheath material composition for railway vehicle cables excellent in flame retardancy and wear resistance, characterized in that the content of maleic anhydride is 0.6 to 3%.
상기 말레산 무수물로 그래프트된 폴리에틸렌(PE) 수지 또는 에틸렌 비닐 아세테이트(EVA) 수지는 0.5 내지 5 g/10분의 용융지수(MI)를 갖는 것을 특징으로 하는 난연성 및 내마모성이 우수한 철도차량 케이블용 시스 재료 조성물.The method of claim 1,
The polyethylene (PE) resin or ethylene vinyl acetate (EVA) resin grafted with maleic anhydride has a melt index (MI) of 0.5 to 5 g / 10 minutes, sheath for railway vehicle cable excellent in flame resistance and wear resistance Material composition.
상기 난연제는 비닐실란, 아미노실란 및 지방산으로 구성된 군으로부터 선택된 1종 이상으로 표면처리된 금속수산화물인 것을 특징으로 하는 난연성 및 내마모성이 우수한 철도차량 케이블용 시스 재료 조성물.The method of claim 1,
The flame retardant is a sheath material composition for railway vehicle cables excellent in flame retardancy and wear resistance, characterized in that the metal hydroxide surface-treated with at least one selected from the group consisting of vinylsilane, aminosilane and fatty acid.
상기 난연제는 0.3 내지 1.5 마이크로미터의 입자 직경을 갖는 것을 특징으로 하는 난연성 및 내마모성이 우수한 철도차량 케이블용 시스 재료 조성물.The method of claim 1,
The flame retardant has a particle diameter of 0.3 to 1.5 micrometers, sheath material composition for railway vehicle cable excellent in flame retardancy and wear resistance.
상기 난연제는 2 내지 3의 모스 경도를 갖는 것을 특징으로 하는 난연성 및 내마모성이 우수한 철도차량 케이블용 시스 재료 조성물.The method of claim 1,
The flame retardant has a Mohs hardness of 2 to 3, the sheath material composition for railway vehicle cables excellent in flame retardancy and wear resistance.
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| KR20170068091A (en) * | 2015-12-09 | 2017-06-19 | 엘에스전선 주식회사 | Insulating composition having excellent abrasion resistance and high temperature water resistance |
| CN107936360A (en) * | 2017-12-08 | 2018-04-20 | 上海化工研究院有限公司 | A kind of ultralight EVA injections crosslinked foaming material of wear-resisting type and preparation method thereof |
| CN108976573A (en) * | 2018-05-18 | 2018-12-11 | 杭州高新橡塑材料股份有限公司 | The low cigarette protective cover material of photovoltaic cable irradiation crosslinking halogen-free |
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| EP2331631B1 (en) * | 2008-09-16 | 2015-10-21 | Union Carbide Chemicals & Plastics Technology LLC | Crack-resistant, flame retardant, halogen-free, cable assembly and coating composition |
| EP2459632B1 (en) * | 2009-07-31 | 2017-04-26 | Dow Global Technologies LLC | Flame retardant thermoplastic elastomer |
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| CN105111576A (en) * | 2015-09-30 | 2015-12-02 | 湖北科普达实业有限公司 | Tight-buffered low-smoke halogen-free flame-retardant sheathing compound for 4G network cable and preparation method thereof |
| KR20170068091A (en) * | 2015-12-09 | 2017-06-19 | 엘에스전선 주식회사 | Insulating composition having excellent abrasion resistance and high temperature water resistance |
| CN107936360A (en) * | 2017-12-08 | 2018-04-20 | 上海化工研究院有限公司 | A kind of ultralight EVA injections crosslinked foaming material of wear-resisting type and preparation method thereof |
| CN108976573A (en) * | 2018-05-18 | 2018-12-11 | 杭州高新橡塑材料股份有限公司 | The low cigarette protective cover material of photovoltaic cable irradiation crosslinking halogen-free |
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| KR101828525B1 (en) | 2018-02-12 |
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