WO2021215872A1 - Composition pour gaine de câble solaire flottant, et câble solaire flottant comportant une gaine de câble fabriquée à partir de celle-ci - Google Patents

Composition pour gaine de câble solaire flottant, et câble solaire flottant comportant une gaine de câble fabriquée à partir de celle-ci Download PDF

Info

Publication number
WO2021215872A1
WO2021215872A1 PCT/KR2021/005163 KR2021005163W WO2021215872A1 WO 2021215872 A1 WO2021215872 A1 WO 2021215872A1 KR 2021005163 W KR2021005163 W KR 2021005163W WO 2021215872 A1 WO2021215872 A1 WO 2021215872A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheath
composition
water
equation
cable
Prior art date
Application number
PCT/KR2021/005163
Other languages
English (en)
Korean (ko)
Inventor
고창모
김종완
이재훈
Original Assignee
엘에스전선 주식회사
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 엘에스전선 주식회사 filed Critical 엘에스전선 주식회사
Priority claimed from KR1020210052910A external-priority patent/KR20210131257A/ko
Publication of WO2021215872A1 publication Critical patent/WO2021215872A1/fr

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/08—Metals
    • 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
    • C08L23/06—Polyethene
    • 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
    • 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
    • C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
    • 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
    • C08L23/26—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
    • 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
    • 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
    • H01B7/14—Submarine cables
    • 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
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

Definitions

  • the present invention relates to a composition for a waterborne solar cable sheath and a waterborne solar cable comprising the cable sheath prepared therefrom. More specifically, the present invention provides a composition for a water-based solar cable sheath that can satisfy various environmental resistance properties so that it can be utilized for a water-based solar cable purpose at the same time as physical properties to meet the standard as a cable (IEC 62930), and from this It relates to a floating solar cable comprising the manufactured cable sheath.
  • the types of power generation devices that generate power can be divided according to the energy source used, and representatively, thermal power generation using fossil fuels such as petroleum or coal, and power generation using solar power, nuclear power, hydro power, tidal power, and wind power etc.
  • nuclear power generation devices have the advantage of being able to generate electricity at a lower cost compared to thermal power generation, but there are many reports of environmental pollution and human harm caused by radiation, and installation is limited due to opposition from local residents. is made with Moreover, facility investment is not being made smoothly due to the risk of the recent Fukushima nuclear accident in Japan and the problem of disposal of nuclear waste generated after electricity is generated by nuclear power generation.
  • the Floating Photovoltaic Power Plant system is a new concept power generation method that combines the existing terrestrial photovoltaic power generation technology and floating technology on the water surface.
  • FIG. 1 is a conceptual diagram for a floating solar power generation system.
  • the structure 11 supporting the photovoltaic module 10 is supported by the buoyancy agent 12 to float the photovoltaic module 10 on the water, and an anchor 13 and a weight ( 14), etc., are connected to the structure 11 so that they are fixed regardless of water level fluctuations, and, like solar power generation on the ground, the power generated from the solar module 10 can be transferred to the underwater cable 100. It is transmitted to the electric room 15 on the ground through, and the electric power transmitted to the electric room 15 has a structure in which the electric power is moved or distributed through the KEPCO pole 16 .
  • a general structure of the power cable includes a conductor 20 and an insulating layer 21 surrounding the conductor 20 at the center.
  • the underwater cable used to transmit the power generated from the solar module to the electrical room on the ground unlike the power cable generally used on the ground, has to be installed underwater, so the sheath layer formed on the outermost part of the underwater cable is It should be formed of a material with excellent water resistance. Therefore, a high-density polyethylene (HDPE) material satisfying such water resistance was used as a sheath to protect internal insulation and structures from moisture.
  • HDPE high-density polyethylene
  • a proven material that does not pollute the water quality even when exposed to water for a long time was used as the cable sheath (dissolution test, sanitary and safety rules/waterworks Act Article 14).
  • the cable is vulnerable to various environmental resistance properties that can be exposed, such as UV, heat resistance and cold resistance.
  • various environmental resistance properties such as UV, heat resistance and cold resistance.
  • heat resistance and cold resistance In particular, in the case of a sheath, there is a weak problem in terms of heat resistance and lifespan by using non-crosslinked polyethylene.
  • Patent Document 1 discloses a sheath composition for an electric wire for improving physical properties such as flexibility as a technique proposed to solve the above problems.
  • Patent Document 1 the technology disclosed in Patent Document 1 is, (a) a thermoplastic polyurethane (TPU) having a melt index (MI) of 30 to 50 g/10 min 50 to 90 phr; (b) 10 to 50 phr of a styrenic thermoplastic elastomer having a melt index (MI) of 1 to 5 g/10 min; (c) 10 to 70 phr of phosphorus-based flame retardants; (d) 1 to 10 phr of a flame retardant aid; (e) 0.1 to 5 phr of antioxidant; (f) UV absorbers and stabilizers 0.1 to 5 phr; And (g) relates to a sheath composition for an electric wire comprising a lubricant 0.1 to 5phr.
  • TPU thermoplastic polyurethane
  • MI melt index
  • Patent Document 1 not only cannot satisfy the tensile strength and elongation, which are physical properties required according to the required standards when applied as a sheath of an underwater cable, but also use a thermoplastic polyurethane resin as a base resin, Since the polymer of the ester or ether group and the polyol group of the thermoplastic polyurethane resin is very vulnerable to hydrolysis, there is a problem in that water resistance is very poor. Moreover, in order to increase compatibility between the mixed resins, a manufacturing method including an extrusion process through two screw mixing must be used.
  • Patent Document 1 Korean Patent Publication No. 10-2017-0128024
  • the present inventors satisfy the physical properties required according to IEC 62930, a standard of the International Electrotechnical Commission (IEC) required for application as a sheath of a cable, and at the same time, various environmental resistance characteristics
  • IEC 62930 a standard of the International Electrotechnical Commission (IEC) required for application as a sheath of a cable
  • various environmental resistance characteristics To provide a water-based solar cable comprising a composition for a water-based solar cable sheath satisfying the and a cable sheath prepared therefrom.
  • the present invention ethylene vinyl acetate (EVA) resin; and a polyolefin resin grafted with a polar moiety as a base resin, and based on 100 parts by weight of the base resin, 80 to 153 parts by weight of a flame retardant.
  • EVA ethylene vinyl acetate
  • the composition for a solar cable sheath provides a composition for a water-based solar cable sheath that satisfies the following Equations 1 to 3.
  • A is a dumbbell specimen prepared according to the IEC 60811-511 standard for a sheath separated from a water photovoltaic cable including a sheath layer prepared from the composition for a water photovoltaic cable sheath under 50% RH humidity. It refers to the rate of change of the mass of the dumbbell specimen measured after storage and pretreatment for 7 days, and then taking out the dumbbell specimen after maintaining immersion in a water bath at 50° C.
  • ⁇ TS is The sheath separated from the water photovoltaic cable including the sheath layer prepared from the composition for the water photovoltaic cable sheath was pretreated by storing the dumbbell specimen prepared according to the IEC 60811-511 standard for 7 days under 50% RH humidity, It means the rate of change of tensile strength ( ⁇ TS100 - ⁇ TS28 / ⁇ TS28) measured after maintaining the immersion of the dumbbell specimen in a water bath at 50 ° C for 28 days ( ⁇ TS28) and 100 days ( ⁇ TS100), respectively, and the above formula In 3, ⁇ E is a dumbbell specimen prepared according to the IEC 60811-511 standard for a sheath separated from a water photovoltaic cable including a sheath layer prepared from the composition for a water photovoltaic cable sheath, under 50%RH humidity for 7 days.
  • the rate of change in elongation measured after maintaining the immersion in the dumbbell specimen for 28 days ( ⁇ E28) and 100 days ( ⁇ E100) in a water bath at 50°C ( ⁇ E100 - ⁇ E28 / ⁇ E28) it means.
  • the base resin 70 parts by weight to 90 parts by weight of ethylene vinyl acetate (EVA) resin; And 10 parts by weight to 30 parts by weight of a polar moiety grafted polyolefin resin; it provides a composition for a water-based solar cable sheath comprising a.
  • EVA ethylene vinyl acetate
  • the flame retardant based on 100 parts by weight of the base resin, 80 parts by weight to 150 parts by weight of an inorganic metal-based flame retardant; And 0.5 parts by weight to 3 parts by weight of phosphorus-based flame retardant; provides a composition for a water-based solar cable sheath comprising a.
  • the present invention provides a composition for a water photovoltaic cable sheath, characterized in that the composition for a water photovoltaic cable sheath satisfies the following formula (4).
  • X is a dumbbell specimen prepared according to IEC 60811-501 standard for a sheath separated from a water photovoltaic cable including a sheath layer prepared from the composition for a water photovoltaic cable sheath, tension installed inside the low temperature chamber It means the low-temperature elongation measured at a tensile rate of 25 ⁇ 5 mm/min using a test facility.
  • the melting temperature (T m ) of the polyolefin resin grafted with the polar moiety is characterized in that 50 °C to 90 °C, provides a composition for a water-borne solar cable sheath.
  • the polyolefin resin grafted with the polar moiety is ethylene vinyl acetate grafted with maleic anhydride, it provides a composition for a waterborne solar cable sheath.
  • the composition for the photovoltaic cable sheath with respect to 100 parts by weight of the base resin, 5 parts by weight to 20 parts by weight of an antioxidant; And 5 to 10 parts by weight of UV stabilizer or carbon black; provides a composition for a water-based solar cable sheath, characterized in that it additionally comprises.
  • the present invention provides a composition for a water photovoltaic cable sheath, characterized in that the composition for a water photovoltaic cable sheath satisfies all of the following Equations 5 to 7.
  • X is a dumbbell specimen prepared in accordance with IEC 60811-511 standards for a sheath separated from a water photovoltaic cable including a sheath layer prepared from the composition for a water photovoltaic cable sheath, tension installed inside a low temperature chamber It means a low-temperature elongation rate measured at a tensile rate of 25 ⁇ 5 mm/min using a test facility, and in Equation 6, Y 1 is waterborne sunlight including a sheath layer prepared from the composition for the water-borne solar cable sheath.
  • Dumbbell specimens prepared according to IEC 60811-501 standards of the sheath separated from the cables are put in a weathering test facility, exposed for 720 hours, and then taken out, and then the specimens are stored at 25 ⁇ 5°C, 50%RH for 18 hours, It means the residual tensile strength versus the tensile strength during the weather resistance/UV test measured at a tensile rate of 25 ⁇ 5 mm/min using a tensile test facility, and in Equation 7, Y 2 is prepared from the composition for the water-borne solar cable sheath Dumbbell specimens prepared according to IEC 60811-501 standards of the sheath separated from the floating solar cable including the sheath layer were put in a weathering test facility, exposed for 720 hours, and then taken out, and the specimens were removed at 25 ⁇ 5°C, 50 It means the residual elongation compared to the elongation during the weather resistance/UV test measured at a tensile rate of 25 ⁇ 5 mm/min using a ten
  • the present invention provides a composition for a water photovoltaic cable sheath, characterized in that the composition for a water photovoltaic cable sheath satisfies both Equations 8 and 9 below.
  • Z is a dumbbell specimen prepared according to the IEC 60811-501 standard for a sheath separated from a water-based solar cable including a sheath layer prepared from the composition for a water-based solar cable sheath Extrusion and cross-linking process 16 hours Thereafter, it means the tensile strength among non-aging properties measured at a tensile rate of 250 ⁇ 50 mm/min using a tensile test facility, and in Equation 9, T is a sheath layer prepared from the composition for a water-based solar cable sheath.
  • the composition for the water photovoltaic cable sheath with respect to 100 parts by weight of the base resin, 2 parts by weight to 10 parts by weight of a crosslinking agent; And 0.5 parts by weight to 3 parts by weight of a crosslinking aid is provided, it characterized in that it further comprises, it provides a composition for a water-based photovoltaic cable sheath.
  • the present invention provides a composition for a water photovoltaic cable sheath, characterized in that the composition for a water photovoltaic cable sheath satisfies all of the following Equations 10 to 12.
  • E 1 is the extruding and crosslinking process of a dumbbell specimen prepared according to IEC 60811-501 standards for a sheath separated from a water photovoltaic cable including a sheath layer prepared from the composition for a water photovoltaic cable sheath. After time, it means the elongation rate among the non-aging properties measured at a tensile rate of 250 ⁇ 50 mm/min using a tensile test facility, and in Equation 11, E 2 is the sheath prepared from the composition for the water-borne solar cable sheath.
  • Dumbbell specimens prepared according to the IEC 60811-511 standard of the sheath separated from the floating solar cable including the layer were placed in a base solution (N-Sodium hydroxide, 1N, 23 ⁇ 2°C) according to the IEC 60811-404 standard for 168 hours. It means the elongation rate in the base resistance measured at a tensile rate of 250 ⁇ 50 mm/min using a tensile test facility after putting it in for a while and then taking it out, and in Equation 12, X is the sheath prepared from the composition for the water photovoltaic cable sheath.
  • the present invention provides a composition for a water photovoltaic cable sheath, characterized in that the composition for a water photovoltaic cable sheath satisfies all of the following Equations 13 to 15.
  • Z is a dumbbell specimen prepared according to the IEC 60811-501 standard for a sheath separated from a water-based solar cable including a sheath layer prepared from the composition for a water-based solar cable sheath Extrusion and cross-linking process 16 hours After that, it means the tensile strength among the non-aging properties measured at a tensile rate of 250 ⁇ 50 mm/min using a tensile test facility, and in Equation 14, ⁇ E is the sheath prepared from the composition for the water-borne solar cable sheath.
  • Dumbbell specimens prepared according to the IEC 60811-511 standard of the sheath separated from the floating solar cable including the layer were placed in an acid solution (N-Oxalic Acid, 1N, 23 ⁇ 2°C) according to the IEC 60811-404 standard for 168 hours. It means the rate of change compared to the tensile strength in acid resistance measured at a tensile rate of 250 ⁇ 50 mm/min using a tensile test facility after putting it in for a while, and in Equation 15, H is from the composition for the water solar cable sheath.
  • Dumbbell specimens manufactured according to the IEC 60811-501 standard for the sheath separated from the floating photovoltaic cable including the manufactured sheath layer were marked at intervals of 20 mm in the middle, and then placed on the specimen in a chamber at a temperature of 200 ⁇ 3°C. It refers to the rate of change (Hot) measured by hanging a load (weight) of 20.4N/cm 2 (based on the cross-sectional area) and exposing it for 15 minutes, and then measuring the extended length (marked interval).
  • Hot rate of change
  • the present invention is a conductor; an insulating layer provided to surround the outer periphery of the conductor; And it provides a water-based solar cable comprising a sheath layer prepared from the above-described composition for a water-based solar cable sheath.
  • the present invention provides a water-based solar cable, characterized in that the water-based solar cable satisfies the following Equation 16.
  • L is the digested length in the flame retardant test measured in accordance with the IEC 60332-1-2 standard for the cable specimen by making a specimen 16 hours or more after the crosslinking process is completed in the finished product of the water photovoltaic cable.
  • composition for a water photovoltaic cable sheath according to the present invention and a water photovoltaic cable comprising a cable sheath prepared therefrom can satisfy all the physical properties required in the international standard (IEC 62930) required for cable use, and additionally Various environmental resistance characteristics can be satisfied.
  • FIG. 1 is a conceptual diagram for a floating solar power system related to the present invention.
  • Figure 2 is a cross-sectional view schematically showing a water-borne solar cable according to an embodiment of the present invention.
  • the present invention relates to a composition for a cable sheath.
  • composition for water-based solar cable sheath a composition suitable for use in a water-based solar cable sheath among the compositions for a cable sheath (hereinafter referred to as “composition for water-based solar cable sheath” or “composition for cable sheath”).
  • the composition for a waterborne solar cable sheath may include a base resin.
  • the base resin is ethylene vinyl acetate (EVA) resin; and a polyolefin resin grafted with a polar moiety.
  • EVA ethylene vinyl acetate
  • the ethylene vinyl acetate resin is not particularly limited, but, for example, the content of units derived from vinyl acetate in the resin may be 15 wt% to 40 wt%.
  • derived unit may refer to a structural unit in which a monomer is polymerized to form a polymer.
  • the polyolefin resin grafted with the polar moiety may have a melting temperature (T m ) of 50°C to 90°C.
  • polar moiety may refer to a polar group, and may refer to a side chain introduced into a main chain in a polymer.
  • grafted may mean that a polyolefin resin is used as a main chain and a polar moiety is provided as a side chain.
  • the polar moiety may be anhydride, and more specifically maleic anhydride.
  • the polyolefin resin grafted with the polar moiety may be a polyolefin resin grafted with maleic anhydride.
  • the polyolefin resin grafted with the polar moiety is ethylene vinyl acetate grafted with maleic anhydride, high-density polyethylene grafted with maleic anhydride, polypropylene grafted with maleic anhydride, anhydrous It may be polyethylene acrylate grafted with maleic acid or polyethylene elastomer grafted with maleic anhydride, preferably ethylene vinyl acetate grafted with maleic anhydride.
  • the melting temperature of the polyolefin resin grafted with the polar moiety is less than 50°C, a problem may occur in dispersing the additive due to low viscosity during compound manufacturing, and if it exceeds 90°C, scorch occurs during cable extrusion This can happen.
  • the composition for a water photovoltaic cable sheath may include a flame retardant to ensure flame retardancy and heat resistance.
  • the flame retardant may be included in an amount of 80 parts by weight to 153 parts by weight based on 100 parts by weight of the base resin.
  • the content of the flame retardant is preferably included in the above-described range, and when included in less than 80 parts by weight or in excess of 153 parts by weight based on 100 parts by weight of the base resin, when produced as a specimen of the composition for sheath to be described later,
  • the low-temperature elongation test of the specimen, the rate of change compared to the tensile strength and the rate of change compared to the elongation during the damp heat test test do not meet the requirements related to the physical properties, and the cable prepared from the composition for the sheath is the physical property for use as a floating solar cable.
  • the type of the flame retardant is not particularly limited, but for example, it is preferable to include a mixture of an inorganic metal-based flame retardant and a phosphorus-based flame retardant.
  • the type of the inorganic metal-based flame retardant is not particularly limited, but, for example, aluminum hydroxide (Alumina Trihydrate, ATH) or magnesium hydroxide (Magnesium Hydroxide, MDH) may be used alone or in mixture of two or more, preferably may use magnesium hydroxide (MDH).
  • aluminum hydroxide Allumina Trihydrate, ATH
  • magnesium hydroxide Magnnesium Hydroxide, MDH
  • MDH Magnnesium Hydroxide
  • the phosphorus-based flame retardant can exhibit a flame retardant effect by reacting with oxygen element in the polymer resin included in the base resin to dehydrate and carbonize, it can effectively perform a flame retardant role in a polymer containing an oxygen element.
  • the type of the phosphorus-based flame retardant phosphoric acid ester, halogen phosphoric acid ester, non-halogen condensed phosphorus-based flame retardant, polyphosphate-based and red-based flame retardant may be used alone or in combination of two or more, but is not particularly limited thereto, preferably A red flame retardant may be used.
  • the composition for the water photovoltaic cable sheath based on 100 parts by weight of the base resin, 80 parts by weight to 150 parts by weight of an inorganic metal-based flame retardant; and 0.5 to 3 parts by weight of a phosphorus-based flame retardant.
  • the content of the inorganic metal-based flame retardant and the phosphorus-based flame retardant is preferably included in each of the above ranges, and if the content of the inorganic metal-based flame retardant is less than 80 parts by weight based on 100 parts by weight of the base resin, or exceeds 150 parts by weight When included as, or when the content of the phosphorus-based flame retardant is included in less than 0.5 parts by weight or more than 3 parts by weight based on 100 parts by weight of the base resin, when producing a specimen of the composition for sheath to be described later, the low temperature of the specimen During the elongation test, the damp heat test test, the rate of change compared to the tensile strength and the rate of change compared to the elongation rate do not meet the physical property-related requirements, and the cable prepared from the composition for the sheath is a low-temperature bending test, which is a physical property for use as a floating solar cable. There may be problems that do not meet the requirements of DC insulation resistance test, flame
  • composition for a water-based solar cable sheath may satisfy the following Equations 1 to 3.
  • A is a dumbbell specimen prepared according to the IEC 60811-511 standard for a sheath separated from a water photovoltaic cable including a sheath layer prepared from the composition for a water photovoltaic cable sheath under 50% RH humidity. It refers to the rate of change of the mass of the dumbbell specimen measured after storage and pretreatment for 7 days, and then taking out the dumbbell specimen after maintaining immersion in a water bath at 50° C.
  • ⁇ TS is The sheath separated from the water photovoltaic cable including the sheath layer prepared from the composition for the water photovoltaic cable sheath was pretreated by storing the dumbbell specimen prepared according to the IEC 60811-511 standard for 7 days under 50% RH humidity, It means the rate of change of tensile strength ( ⁇ TS100 - ⁇ TS28 / ⁇ TS28) measured after maintaining the immersion of the dumbbell specimen in a water bath at 50 ° C for 28 days ( ⁇ TS28) and 100 days ( ⁇ TS100), respectively, and the above formula In 3, ⁇ E is a dumbbell specimen prepared according to the IEC 60811-511 standard for a sheath separated from a water photovoltaic cable including a sheath layer prepared from the composition for a water photovoltaic cable sheath, under 50%RH humidity for 7 days.
  • the rate of change in elongation measured after maintaining the immersion in the dumbbell specimen for 28 days ( ⁇ E28) and 100 days ( ⁇ E100) in a water bath at 50°C ( ⁇ E100 - ⁇ E28 / ⁇ E28) it means.
  • the composition for a water photovoltaic cable sheath according to the present invention includes, in addition to the base resin, as described above, with respect to 100 parts by weight of the base resin, 80 parts by weight to 150 parts by weight of an inorganic metal-based flame retardant; And 0.5 parts by weight to 3 parts by weight of a phosphorus-based flame retardant;
  • the cable including the sheath layer containing the composition for the cable sheath meets the criteria required in the above Equations 1 to 3, that is, the immersion evaluation test, It can be suitably applied to an optical cable.
  • the base resin 70 parts by weight to 90 parts by weight of ethylene vinyl acetate (EVA) resin; and 10 parts by weight to 30 parts by weight of a polyolefin resin grafted with a polar moiety.
  • EVA ethylene vinyl acetate
  • composition for a cable sheath according to the present invention based on 100 parts by weight of the total resin, 70 parts by weight to 90 parts by weight of ethylene vinyl acetate (EVA) resin; and 10 parts by weight to 30 parts by weight of a polyolefin resin grafted with a polar moiety; may include as a base resin,
  • the ethylene vinyl acetate (EVA) resin included in the base resin is preferably included in the above-mentioned content range, and the content of the ethylene vinyl acetate (EVA) is included in less than 70 parts by weight based on 100 parts by weight of the total resin, When included in more than 90 parts by weight as a specimen of the composition for a sheath to be described later, it does not meet the requirements in the low-temperature elongation test of the specimen, and the cable prepared from the composition for the sheath is used for the purpose of a water-borne solar cable. There may be problems that do not meet the requirements of low-temperature bending test and dynamic penetration test, which are physical properties.
  • the polyolefin resin grafted with a polar moiety among the base resins included in the composition for cable sheath it is preferably included in the above-described content range, and the content of the polyolefin resin grafted with the polar moiety is When included in less than 10 parts by weight based on 100 parts by weight of the total resin, or when included in more than 30 parts by weight as a specimen of the composition for sheath to be described later, it does not meet the requirements in the low-temperature elongation test of the specimen, and the composition for sheath There may be problems in that the cable manufactured by the company does not meet the requirements of low-temperature bending test and dynamic penetration test, which are physical properties for use in floating solar cables.
  • composition for a water-borne solar cable sheath may satisfy Equation 4 below.
  • X is a dumbbell specimen prepared according to IEC 60811-501 standard for a sheath separated from a water photovoltaic cable including a sheath layer prepared from the composition for a water photovoltaic cable sheath, tension installed inside the low temperature chamber It means the low-temperature elongation measured at a tensile rate of 25 ⁇ 5 mm/min using a test facility.
  • the composition for a waterborne solar cable sheath according to the present invention is a base resin, and as described above, 70 parts by weight to 90 parts by weight of ethylene vinyl acetate (EVA) resin; And by including a polyolefin resin grafted with 10 to 30 parts by weight of a polar moiety, the above Equation 4, that is, by satisfying the standards required in the specification for elongation at low temperature, to be suitably applied to a sheath for a floating solar cable can
  • EVA ethylene vinyl acetate
  • the composition for a waterborne solar cable sheath may include an antioxidant capable of improving thermal stability by preventing oxidation of the composition.
  • the type of the antioxidant is not particularly limited, but, for example, phenol-based, phosphorus-based, amine-based, zinc-based (eg, MBZ, ZnO) and triazole-based antioxidants may be used alone or in combination of two or more. , preferably a phenol-based antioxidant may be used.
  • the composition for a water-based solar cable sheath may include a UV stabilizer together to further improve the thermal stability of the composition in addition to the antioxidant described above.
  • the UV stabilizer may be used alone or in combination of two or more selected from the group consisting of a metal deactivator, a heat stabilizer, an ultraviolet absorber, a quencher, a peroxide decomposer, a radical scavenger, and HALS, and carbon black is used. Preferably, it is not particularly limited thereto.
  • the composition for a waterborne solar cable sheath with respect to 100 parts by weight of the base resin, 5 parts by weight to 20 parts by weight of an antioxidant; and 5 parts by weight to 10 parts by weight of a UV stabilizer or carbon black.
  • the antioxidant is preferably included in the above-described content range, and the content of the antioxidant is included in less than 5 parts by weight or more than 20 parts by weight based on 100 parts by weight of the base resin.
  • tensile strength, temperature index, residual tensile strength versus tensile strength in weather resistance / UV test, residual elongation versus elongation, and required values in low temperature elongation test among the non-aging properties of the specimen A problem may occur that does not meet the requirements of the ozone resistance test, which is a physical property for the cable manufactured from the composition for the sheath to be used for the purpose of a floating solar cable.
  • the UV stabilizer or carbon black is also included in the above-described content range, and the content of the UV stabilizer or carbon black is 5 parts by weight based on 100 parts by weight of the base resin.
  • composition for a water-based solar cable sheath may satisfy all of the following Equations 5 to 7.
  • X is a dumbbell specimen prepared in accordance with IEC 60811-511 standards for a sheath separated from a water photovoltaic cable including a sheath layer prepared from the composition for a water photovoltaic cable sheath, tension installed inside a low temperature chamber It means a low-temperature elongation rate measured at a tensile rate of 25 ⁇ 5 mm/min using a test facility, and in Equation 6, Y 1 is waterborne sunlight including a sheath layer prepared from the composition for the water-borne solar cable sheath.
  • Dumbbell specimens prepared according to IEC 60811-501 standards of the sheath separated from the cables are put in a weathering test facility, exposed for 720 hours, and then taken out, and then the specimens are stored at 25 ⁇ 5°C, 50%RH for 18 hours, It means the residual tensile strength versus the tensile strength during the weather resistance/UV test measured at a tensile rate of 25 ⁇ 5 mm/min using a tensile test facility, and in Equation 7, Y 2 is prepared from the composition for the water-borne solar cable sheath Dumbbell specimens prepared according to IEC 60811-501 standards of the sheath separated from the floating solar cable including the sheath layer were put in a weathering test facility, exposed for 720 hours, and then taken out, and the specimens were removed at 25 ⁇ 5°C, 50 It means the residual elongation compared to the elongation during the weather resistance/UV test measured at a tensile rate of 25 ⁇ 5 mm/min using a ten
  • composition for a water photovoltaic cable sheath may satisfy both Equations 8 and 9 below.
  • Z is a dumbbell specimen prepared according to the IEC 60811-501 standard for a sheath separated from a water-based solar cable including a sheath layer prepared from the composition for a water-based solar cable sheath Extrusion and cross-linking process 16 hours Thereafter, it means the tensile strength among non-aging properties measured at a tensile rate of 250 ⁇ 50 mm/min using a tensile test facility, and in Equation 9, T is a sheath layer prepared from the composition for a water-based solar cable sheath.
  • composition for a water-based solar cable sheath with respect to 100 parts by weight of the base resin contained in the composition, 5 parts by weight to 20 parts by weight of an antioxidant; And 5 to 10 parts by weight of a UV stabilizer or carbon black; by including; Equation 5 to 9, that is, elongation at low temperature, weather resistance / tensile strength vs. tensile strength / residual elongation vs. elongation, non-aging physical properties
  • Equation 5 to 9 that is, elongation at low temperature, weather resistance / tensile strength vs. tensile strength / residual elongation vs. elongation, non-aging physical properties
  • the composition for a waterborne solar cable sheath may include a crosslinking agent and a crosslinking aid in order to reinforce thermal, mechanical and chemical properties by crosslinking the molecules of the resin included in the composition.
  • the type of the crosslinking agent is not particularly limited, but, for example, dicumyl peroxide (DCP), perkadox or peroxan may be used alone or in combination of two or more. have.
  • DCP dicumyl peroxide
  • perkadox perkadox
  • peroxan may be used alone or in combination of two or more. have.
  • the type of the crosslinking aid is not particularly limited, but for example, TAIC (Trially Isocyanurate), TAC (Trially Cyanurate), TMPTMA (Trimethylolpropane Trimethacrylate) or TMPTA (Trimethylolpropane Triacrylate), etc. alone or two or more It can be used by mixing.
  • TAIC Trially Isocyanurate
  • TAC Trially Cyanurate
  • TMPTMA Trimethylolpropane Trimethacrylate
  • TMPTA Trimethylolpropane Triacrylate
  • the composition for a water photovoltaic cable sheath with respect to 100 parts by weight of the base resin, 2 parts by weight to 10 parts by weight of a crosslinking agent; and 0.5 to 3 parts by weight of a crosslinking aid may be additionally included.
  • the crosslinking agent is preferably included in the above-described content range.
  • the content of the crosslinking agent is included in less than 2 parts by weight or more than 10 parts by weight based on 100 parts by weight of the base resin.
  • the crosslinking aid is preferably included in the above-mentioned content range, and the content of the crosslinking aid is included in less than 0.5 parts by weight based on 100 parts by weight of the base resin, or 3
  • tensile strength/elongation among the non-aging properties of the specimen change rate of tensile strength among acid resistance, elongation rate among base resistance, and length change rate among Hot/Set items (Hot) and low temperature elongation test may have a problem that does not meet the requirements.
  • composition for the water-borne solar cable sheath may satisfy all of the following Equations 10 to 12.
  • E 1 is the extruding and crosslinking process of a dumbbell specimen prepared according to IEC 60811-501 standards for a sheath separated from a water photovoltaic cable including a sheath layer prepared from the composition for a water photovoltaic cable sheath. After time, it means the elongation rate among the non-aging properties measured at a tensile rate of 250 ⁇ 50 mm/min using a tensile test facility, and in Equation 11, E 2 is the sheath prepared from the composition for the water-borne solar cable sheath.
  • Dumbbell specimens prepared according to the IEC 60811-511 standard of the sheath separated from the floating solar cable including the layer were placed in a base solution (N-Sodium hydroxide, 1N, 23 ⁇ 2°C) according to the IEC 60811-404 standard for 168 hours. It means the elongation rate in the base resistance measured at a tensile rate of 250 ⁇ 50 mm/min using a tensile test facility after putting it in for a while and then taking it out, and in Equation 12, X is the sheath prepared from the composition for the water photovoltaic cable sheath.
  • composition for the water photovoltaic cable sheath may satisfy all of the following Equations 13 to 15.
  • Z is a dumbbell specimen prepared according to the IEC 60811-501 standard for a sheath separated from a water-based solar cable including a sheath layer prepared from the composition for a water-based solar cable sheath Extrusion and cross-linking process 16 hours After that, it means the tensile strength among the non-aging properties measured at a tensile rate of 250 ⁇ 50 mm/min using a tensile test facility, and in Equation 14, ⁇ E is the sheath prepared from the composition for the water-borne solar cable sheath.
  • Dumbbell specimens prepared according to the IEC 60811-511 standard of the sheath separated from the floating solar cable including the layer were placed in an acid solution (N-Oxalic Acid, 1N, 23 ⁇ 2°C) according to the IEC 60811-404 standard for 168 hours. It means the rate of change compared to the tensile strength in acid resistance measured at a tensile rate of 250 ⁇ 50 mm/min using a tensile test facility after putting it in for a while, and in Equation 15, H is from the composition for the water solar cable sheath.
  • Dumbbell specimens manufactured according to the IEC 60811-501 standard for the sheath separated from the floating photovoltaic cable including the manufactured sheath layer were marked at intervals of 20 mm in the middle, and then placed on the specimen in a chamber at a temperature of 200 ⁇ 3°C. It refers to the rate of change (Hot) measured by hanging a load (weight) of 20.4N/cm 2 (based on the cross-sectional area) and exposing it for 15 minutes, and then measuring the extended length (marked interval).
  • Hot rate of change
  • composition for a water photovoltaic cable sheath according to the present invention with respect to 100 parts by weight of the base resin, 2 parts by weight to 10 parts by weight of a crosslinking agent; And 0.5 parts by weight to 3 parts by weight of a crosslinking aid by additionally including, Equations 9 to 14, that is, tensile strength/elongation among non-aging properties, elongation in base resistance, elongation at low temperature, tensile strength in acid resistance, and Hot/Set
  • Equations 9 to 14 that is, tensile strength/elongation among non-aging properties, elongation in base resistance, elongation at low temperature, tensile strength in acid resistance, and Hot/Set
  • the composition for a water-based solar cable sheath according to the present invention is not particularly limited, but, for example, in order to supplement the required physical properties, various additives, that is, nanoclay, high molecular weight wax, low molecular weight wax, polyolefin
  • various additives that is, nanoclay, high molecular weight wax, low molecular weight wax, polyolefin
  • lubricants such as wax, paraffin wax, paraffin oil, stearic acid, metal soap, organic silicone, fatty acid ester, fatty acid amide, fatty alcohol, fatty acid, reinforcing agent, release agent, stabilizer, pigment, dye and colorant Or two or more may be additionally included.
  • the present invention also relates to a floating solar cable.
  • the present invention relates to a waterborne solar cable comprising a sheath layer prepared from the above-described composition for a waterborne solar cable sheath.
  • Figure 2 is a cross-sectional view schematically showing a water-borne solar cable according to an embodiment of the present invention.
  • the solar water cable 300 according to the present invention, the conductor 20; an insulating layer 21 provided to surround the outer periphery of the conductor; And it may include a sheath layer 200 prepared from the above-mentioned composition for a water-based solar cable sheath.
  • the sheath layer 200 is manufactured from the above-described composition for a water-based photovoltaic cable sheath, and the contents overlapping with the above-described contents will be omitted below.
  • the conductor 20 may have a composite stranded wire structure made by twisting a plurality of metal wires at a constant pitch, and the metal wire may be made of a single metal or at least two or more metal alloys. That is, the metal wire may be made of a metal selected from copper, aluminum, iron, and nickel or an alloy of these metals, but is not particularly limited thereto.
  • the insulating layer 21 may be formed using an insulating composition as a polymer resin layer surrounding the conductor by extrusion molding on the outside.
  • the insulating layer may include polyolefin elastomer (POE); ethylene propylene rubber (EPDM); and polyethylene (PE) as a base resin.
  • POE polyolefin elastomer
  • EPDM ethylene propylene rubber
  • PE polyethylene
  • insulating layer composition if necessary, various additional components may be included in the insulating layer composition, for example, antioxidants, UV stabilizers, crosslinking agents, and crosslinking aids may be applied in the same manner as in the examples in the above-described composition for cable sheath.
  • antioxidants for example, antioxidants, UV stabilizers, crosslinking agents, and crosslinking aids may be applied in the same manner as in the examples in the above-described composition for cable sheath.
  • the photovoltaic cable may be manufactured according to a general method of manufacturing a cable, except that the sheath is formed using the sheath composition.
  • the photovoltaic cable comprises the steps of preparing a conductor; forming an insulating layer on the conductor using an insulating composition; and forming a sheath layer on the insulating layer using a sheath composition.
  • each layer in the step of forming the insulating layer and the step of forming the sheath layer, each layer may be separately extruded sequentially or sequentially, or may be extruded simultaneously.
  • the step of forming the insulating layer and the step of forming the sheath it is crosslinked through CCV (Catenary Continuous Vulcanizing: Suspended continuous extrusion system) equipment, crosslinked using water crosslinking, or irradiation crosslinking can be cross-linked using CCV (Catenary Continuous Vulcanizing: Suspended continuous extrusion system) equipment, crosslinked using water crosslinking, or irradiation crosslinking can be cross-linked using CCV (Catenary Continuous Vulcanizing: Suspended continuous extrusion system) equipment, crosslinked using water crosslinking, or irradiation crosslinking can be cross-linked using CCV (Catenary Continuous Vulcanizing: Suspended continuous extrusion system) equipment, crosslinked using water crosslinking, or irradiation crosslinking can be cross-linked using CCV (Catenary Continuous Vulcanizing: Suspended continuous extrusion system) equipment, crosslinked using water crosslinking, or irradiation crosslinking
  • the water photovoltaic cable may satisfy Equation 16 below.
  • L is the digested length in the flame retardant test measured in accordance with the IEC 60332-1-2 standard for the cable specimen by making a specimen 16 hours or more after the crosslinking process is completed in the finished product of the water photovoltaic cable.
  • the waterborne solar cable according to the present invention by including the sheath layer prepared from the above-described composition for the waterborne solar cable sheath, the above Equation 16, that is, it can satisfy the requirements of the flame retardant test items required as a waterborne solar cable.
  • specimens were prepared from the cable. In this case, when it was smaller than the diameter or the main axis, the specimen was prepared by press-crosslinking the raw material.
  • the thickness of the specimen was manufactured to be at least 0.8 mm or more and 2 mm or less. All samples were stored at room temperature for at least 3 hours, and after that, specimens were prepared according to Figure 1 of IEC 60811-501, and the specimens were collected in the longitudinal direction.
  • the tensile speed was set to 250 ⁇ 50 mm/min, and tensile strength and elongation were measured, respectively.
  • specimens were prepared from the cable. In this case, when it was smaller than the diameter or the main axis, the specimen was prepared by press-crosslinking the raw material.
  • the thickness of the specimen was manufactured to be at least 0.8 mm or more and 2 mm or less. All samples were stored at room temperature for at least 3 hours, and after that, specimens were prepared according to Figure 1 of IEC 60811-501, and the specimens were collected in the longitudinal direction.
  • the Temperature Index (Ti) test is a test that calculates the lifespan of a material, and it is to obtain a temperature having a lifespan of 20,000 hours.
  • the Ti value was calculated by selecting the end-point as 50% elongation according to the term.
  • specimens were prepared from the cable. In this case, when it was smaller than the diameter or the main axis, the specimen was prepared by press-crosslinking the raw material.
  • the thickness of the specimen was manufactured to be at least 0.8 mm or more and 2 mm or less. All samples were stored at room temperature for at least 3 hours, and after that, specimens were prepared according to Figure 1 of IEC 60811-501, and the specimens were collected in the longitudinal direction.
  • the prepared specimen was placed in an acid solution (N-Oxalic Acid, 1N, 23 ⁇ 2° C.) for 168 hours according to IEC 60811-404 standard, and then taken out, and the elongation rate was measured at a tensile speed of 250 ⁇ 50 mm/min.
  • an acid solution N-Oxalic Acid, 1N, 23 ⁇ 2° C.
  • specimens were prepared from the cable. In this case, when it was smaller than the diameter or the main axis, the specimen was prepared by press-crosslinking the raw material.
  • the thickness of the specimen was manufactured to be at least 0.8 mm or more and 2 mm or less. All samples were stored at room temperature for at least 3 hours, and after that, specimens were prepared according to Figure 1 of IEC 60811-501, and the specimens were collected in the longitudinal direction.
  • the prepared specimen was put in a base solution (N-Sodium hydroxide, 1N, 23 ⁇ 2°C) for 168 hours according to IEC 60811-404 standard, and then taken out, and the elongation rate was measured at a tensile speed of 250 ⁇ 50 mm/min.
  • a base solution N-Sodium hydroxide, 1N, 23 ⁇ 2°C
  • specimens were prepared from the cable. In this case, when it was smaller than the diameter or the main axis, the specimen was prepared by press-crosslinking the raw material.
  • the thickness of the specimen was manufactured to be at least 0.8 mm or more and 2 mm or less. All samples were stored at room temperature for at least 3 hours, and after that, specimens were prepared according to Figure 1 of IEC 60811-501, and the specimens were collected in the longitudinal direction.
  • the prepared specimen was placed in a weathering test facility, exposed for 720 hours, and then the specimen was taken out. After the sample was stored at 25 ⁇ 5° C. and 50% RH for 18 hours, a tensile test was performed to measure the tensile residual ratio and the elongation residual ratio compared to the unaged sample.
  • the specific environmental conditions of the weathering test facility refer to ISO 4892 as follows.
  • test was conducted by creating one cycle of UV exposure conditions for 102 minutes and rain conditions for 18 minutes.
  • specimens were prepared from the cable. In this case, when it was smaller than the diameter or the main axis, the specimen was prepared by press-crosslinking the raw material.
  • the thickness of the specimen was manufactured to be at least 0.8 mm or more and 2 mm or less. All samples were stored at room temperature for at least 3 hours, and after that, specimens were prepared according to Figure 1 of IEC 60811-501, and the specimens were collected in the longitudinal direction.
  • specimens were prepared from the cable. In this case, when it was smaller than the diameter or the main axis, the specimen was prepared by press-crosslinking the raw material.
  • the thickness of the specimen was manufactured to be at least 0.8 mm or more and 2 mm or less. All samples were stored at room temperature for at least 3 hours, and after that, specimens were prepared according to Figure 1 of IEC 60811-501, and the specimens were collected in the longitudinal direction.
  • the tensile rate was 25 ⁇ 5 mm/min, and the elongation rate was measured.
  • the tensile test equipment installed inside the low-temperature chamber was used for the elongation rate, and when using a liquid as a coolant, it was maintained at the temperature for at least 10 minutes or more. After maintaining in the elongation was measured.
  • specimens were prepared from the cable. In this case, when it was smaller than the diameter or the main axis, the specimen was prepared by press-crosslinking the raw material. The thickness of the specimen was manufactured to be at least 0.8 mm or more and 2 mm or less. All samples were stored at room temperature for at least 3 hours. After that, specimens were prepared according to Figure 1 of IEC 60811-501, and the specimens were taken in the longitudinal direction, but the sheath was removed from the finished product to prepare the specimen.
  • the prepared specimen is placed in a constant temperature / constant humidity tester at a temperature of 90 ⁇ 2 ° C and a humidity of 85% RH, exposed for 1,000 hours and then taken out, and then the specimen is again stabilized at room temperature for 16 to 24 hours, the tensile rate is Tensile strength and elongation were measured at 250 ⁇ 50 mm/min, respectively.
  • specimens were prepared from the cable. In this case, when it was smaller than the diameter or the main axis, the specimen was prepared by press-crosslinking the raw material. The thickness of the specimen was manufactured to be at least 0.8 mm or more and 2 mm or less. All samples were stored at room temperature for at least 3 hours. After that, specimens were prepared according to Figure 1 of IEC 60811-501, and the specimens were taken in the longitudinal direction, but two dumbbell specimens with a thickness of 0.6 mm or more were prepared from the finished product. did.
  • the ozone concentration in the chamber is 250 ⁇ 300 ⁇ 10 -4 vol%
  • the temperature is 25 ⁇ 2°C
  • an impact test (Table.2, Paragraph 10) was performed by varying the weight and drop height for each specimen. Thereafter, it was checked whether cracks occurred in the exterior and internal structures of each specimen.
  • the prepared specimen was immersed in an aqueous NaCl solution of -10 g/L concentration, 250 mm of both ends of each specimen were not immersed in the aqueous solution, and then the negative electrode (-) was connected to the conductor and the positive electrode ( After +) was connected to the aqueous solution, 1.8 kVdc was applied by immersion in an aqueous solution at 85 ⁇ 5° C. for 240 hours. In this case, it was checked whether break-down occurred for 240 hours.
  • IEC 62930 Annex D standard press the specimen with a needle of 0.5 ⁇ 0.01 mm in diameter at room temperature, and conduct the test after making the axis of the needle and the cable specimen perpendicular. , the pressure on the cable specimen was increased at a rate of 1 N/s. Insulation and sheath included in the cable specimen were broken, and the pressure at the moment when the needle and the conductor came into contact was measured, and this test was repeated 4 times to calculate the average value.
  • the required pressure (F, newton) was calculated according to the following formula according to the diameter (d) of the cable specimen.
  • the floating photovoltaic power generation cable according to the present invention since the floating photovoltaic power generation cable according to the present invention must be an underwater cable to be installed in reservoirs and freshwater lakes, it must be certified for hygiene and safety standards in accordance with Article 14 of the Waterworks Act, and the sanitary and safety standards are based on a total of 44 types of hazardous substances. Since the permissible value for dissolution is limited, the actual test was conducted with the following examples and comparative examples in consideration of the relevant certifications and standards.
  • Compounding was carried out while raising the temperature to about 110 °C using a kneader.
  • a crosslinking agent was added at the last stage of compounding and kneading was performed for a short time.
  • the cis compounding composition is shown in Tables 3 to 5 below.
  • Components in Tables 3 to 5 are as follows, and the unit is each part by weight based on 100 parts by weight of the total resin.
  • EVA Ethylene vinyl acetate (EVA) resin (VA content: 32wt.%, Lotte Chemical)
  • Resin b ethylene vinyl acetate resin grafted with maleic anhydride (melting temperature (T m ): 71° C.)
  • Antioxidant Phenolic antioxidant (Songwon Industrial Co., Ltd.)
  • UV Stabilizer carbon black
  • the sheath composition according to an exemplary embodiment of the present invention can satisfy all of the physical properties required as a sheath included in an underwater solar cable used in a floating solar power system. have.
  • Comparative Examples 1.1 and 1.4 in which the content of the polyolefin resin grafted with the ethylene vinyl acetate resin and the polar moiety is not suitable, the low temperature elongation drops to less than 30%, and the ethylene vinyl In Comparative Examples 1.2 and 1.3, where the content of other sheath composition components (crosslinking aid and crosslinking agent) other than the content of the polyolefin resin grafted with the acetate resin and the polar moiety was not suitable, tensile strength among non-aging properties and acid resistance It was confirmed that the physical properties of contrast change rate, elongation rate during base resistance, hot item during hot/set test, and low temperature elongation did not satisfy the standard values.
  • crosslinking aid and crosslinking agent crosslinking aid and crosslinking agent
  • Cables were produced by extruding each of the sheath compositions of Examples and Comparative Examples prepared with the sheath compound components and content ratios of Tables 3 to 5 on the outer shell of the insulating layer surrounding the conductor. At this time, the extrusion temperature of the sheath composition was set to 90 °C to 110 °C. After extrusion, the sheath was cross-linked in a CV (Continuous Vulcanization) tube at 160°C to 200°C. For the conductor included in the cable for this evaluation, 150SQ conductor was used.
  • CV Continuous Vulcanization
  • Example and Comparative Example cables For each of the manufactured Example and Comparative Example cables, the test methods and evaluation criteria were evaluated based on the same standards as Table 2, which is the standard for underwater solar cables used in floating photovoltaic systems, and the evaluation results are shown in the following table 9 to Table 11. In this case, each evaluation was performed according to IEC.
  • Example comparative example 1.1 1.2 1.3 1.1 1.2 1.3 1.4 ozone resistance exam Check the cable sheath appearance - No crack Pass Pass Pass Pass Pass Pass low temperature Shock exam Check cable appearance and internal components for cracks - No crack Pass Pass Pass Pass Fail Pass Pass low temperature bend exam Check cable appearance and internal components for cracks - No crack Pass Pass Pass Pass Fail Fail Pass Pass long-term DC Insulation Resistance exam withstand voltage test - No break down Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Dynamic Penetration exam Insulation breaking strength (Based on 150SQ) N 587 more 768 735 634 835 788 605 571 Flame Retardant exam shot length mm 50 to 540 Pass Pass Pass Pass Pass Pass Pass smoke density exam light transmittance % over 60 89 88 96 94 92 94 95
  • the sheath composition according to an exemplary embodiment of the present invention can satisfy all of the physical properties required as a cable when applied as an underwater solar cable used in a floating solar power system.
  • the water-borne solar cable comprising the composition for a water-based solar cable sheath according to the present invention also satisfies the required water pressure and immersion evaluation, according to the Examples and Comparative Examples of Table 5 Including the sheath composition prepared in the composition and content ratio, but in the same manner as the above-described method for producing a water-based solar cable, each of the water-based solar cables including the sheath composition was prepared, and the submersion evaluation was carried out by the following evaluation method .
  • the cables manufactured by each of the Examples and Comparative Examples in Table 5 were each stripped of the sheath and manufactured as a specimen according to the IEC 60811-501 standard. After that, the specimens were stored for 7 days at room temperature under 50%RH humidity conditions and pretreated, and then each specimen was immersed at 50°C for 100 days, and samples were collected every predetermined time to observe the changes in mass, tensile strength, and elongation. do.
  • the mass is measured after removing moisture from the surface and storing it for 16 hours at room temperature and 50%RH humidity. After 100 days of immersion, the change in mass should be within 40%.
  • the rate of change of elongation measured after 28 days and elongation measured after 100 days should be within ⁇ 20%.
  • the sheath composition according to an exemplary embodiment of the present invention can satisfy the immersion evaluation, which is a required major physical property, when applied as an underwater solar cable used in a floating photovoltaic system. .

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Insulated Conductors (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)

Abstract

La présente invention concerne une composition pour une gaine de câble solaire flottant, et un câble solaire flottant comportant une gaine de câble fabriquée à partir de celle-ci. Selon la présente invention, la composition pour gaine de câble solaire flottant et le câble solaire flottant comportant une gaine de câble fabriquée à partir de celle-ci peuvent satisfaire à toutes les propriétés physiques requises dans les normes internationales (IEC 62930) imposées pour l'utilisation d'un câble et peuvent en outre satisfaire à diverses caractéristiques de résistance environnementale.
PCT/KR2021/005163 2020-04-23 2021-04-23 Composition pour gaine de câble solaire flottant, et câble solaire flottant comportant une gaine de câble fabriquée à partir de celle-ci WO2021215872A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2020-0049580 2020-04-23
KR20200049580 2020-04-23
KR10-2021-0052910 2021-04-23
KR1020210052910A KR20210131257A (ko) 2020-04-23 2021-04-23 수상 태양광 케이블 시스용 조성물 및 이로부터 제조된 케이블 시스를 포함하는 수상 태양광 케이블

Publications (1)

Publication Number Publication Date
WO2021215872A1 true WO2021215872A1 (fr) 2021-10-28

Family

ID=78269845

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2021/005163 WO2021215872A1 (fr) 2020-04-23 2021-04-23 Composition pour gaine de câble solaire flottant, et câble solaire flottant comportant une gaine de câble fabriquée à partir de celle-ci

Country Status (1)

Country Link
WO (1) WO2021215872A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115240923A (zh) * 2022-08-02 2022-10-25 安徽尚纬电缆有限公司 一种耐水型铝合金芯双层共挤光伏电缆及其制造工艺

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980058711A (ko) * 1996-12-30 1998-10-07 성기웅 전선 케이블 피복용 난연 수지 조성물
KR20000067127A (ko) * 1999-04-23 2000-11-15 권문구 난연 재료 조성물
KR20040085783A (ko) * 2003-04-01 2004-10-08 엘지전선 주식회사 우수한 기계적 물성 및 장기 내열성을 갖는 고난연열가소성 케이블 시스 재료 조성물 및 이를 이용한 케이블
KR20090103348A (ko) * 2008-03-28 2009-10-01 엘에스전선 주식회사 비할로겐계 난연재 제조용 조성물 및 이를 이용하여 제조된절연전선
KR101467971B1 (ko) * 2013-05-31 2014-12-02 김영두 전선용 조성물

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980058711A (ko) * 1996-12-30 1998-10-07 성기웅 전선 케이블 피복용 난연 수지 조성물
KR20000067127A (ko) * 1999-04-23 2000-11-15 권문구 난연 재료 조성물
KR20040085783A (ko) * 2003-04-01 2004-10-08 엘지전선 주식회사 우수한 기계적 물성 및 장기 내열성을 갖는 고난연열가소성 케이블 시스 재료 조성물 및 이를 이용한 케이블
KR20090103348A (ko) * 2008-03-28 2009-10-01 엘에스전선 주식회사 비할로겐계 난연재 제조용 조성물 및 이를 이용하여 제조된절연전선
KR101467971B1 (ko) * 2013-05-31 2014-12-02 김영두 전선용 조성물

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115240923A (zh) * 2022-08-02 2022-10-25 安徽尚纬电缆有限公司 一种耐水型铝合金芯双层共挤光伏电缆及其制造工艺

Similar Documents

Publication Publication Date Title
WO2019151812A1 (fr) Séparateur, batterie secondaire au lithium comprenant un séparateur et son procédé de fabrication
EP2417194A2 (fr) Composition de polyéthylène non réticulé pour câble d'alimentation
WO2020022848A1 (fr) Séparateur de polyoléfine réticulée et procédé de fabrication associé
WO2019240427A1 (fr) Batterie secondaire au lithium comprenant un séparateur et son procédé de fabrication
WO2021215872A1 (fr) Composition pour gaine de câble solaire flottant, et câble solaire flottant comportant une gaine de câble fabriquée à partir de celle-ci
WO2020055188A1 (fr) Séparateur de polyoléfine réticulé et procédé pour sa production
WO2019027174A1 (fr) Feuille de cuivre résistant au plissement , électrode la comprenant, batterie rechargeable la comprenant et son procédé de fabrication
WO2021112420A1 (fr) Nouvel ionomère à base de polyfluorène, membrane échangeuse d'anions et son procédé de production
EP1552535B1 (fr) Isolation et blindage semi-conducteur destines a un cable a courant continu haute tension
WO2019093703A1 (fr) Composition de résine thermoplastique
WO2015046956A1 (fr) Poly(phénylène oxyde) modifié, et stratifié recouvert de cuivre utilisant celui-ci
WO2020036451A1 (fr) Séparateur en polyoléfine réticulée et son procédé de fabrication
WO2020141931A1 (fr) Composition servant de gaine de câble, câble comportant une gaine de câble préparée à partir de ladite composition, et procédé de fabrication associé
WO2021054771A1 (fr) Résine contenant du phosphore à extrémité coiffée d'un groupe insaturé, son procédé de préparation et composition de résine comprenant une résine contenant du phosphore à extrémité coiffée d'un groupe insaturé
WO2018147606A1 (fr) Film polyamide-imide et son procédé de préparation
WO2020251225A1 (fr) Composition de résine pour isolation externe de câble aérien, câble aérien comprenant une isolation externe de câble aérien fabriquée à partir de celle-ci, et son procédé de fabrication
WO2020130412A1 (fr) Séparateur en polyoléfine réticulée et son procédé de fabrication
WO2020159086A1 (fr) Film de résine polyamide et stratifié de résine l'utilisant
WO2018147617A1 (fr) Film de polyamide-imide et son procédé de production
WO2021060917A1 (fr) Copolymère d'éthylène/alpha-oléfine et son procédé de préparation
WO2023055099A1 (fr) Résine thermoplastique et article moulé fabriqué à partir de celle-ci
WO2015199328A1 (fr) Additif pour élément électrochimique, électrolyte comprenant cet additif, électrode et élément électrochimique
WO2020046075A1 (fr) Séparateur en polyoléfine réticulée et procédé de fabrication correspondant
WO2016122144A1 (fr) Caoutchouc modifié d'isobutylène-isoprène, son procédé de production et son matériau durci
WO2022005064A1 (fr) Intermédiaire pour la préparation d'oxycarbure de silicium poreux, son procédé de préparation et batterie rechargeable au lithium comprenant de l'oxycarbure de silicium poreux préparé à partir de celui-ci en tant que matériau actif d'anode

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21791897

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21791897

Country of ref document: EP

Kind code of ref document: A1