CN112225982A - Rod position reactor top signal cable for nuclear power station - Google Patents
Rod position reactor top signal cable for nuclear power station Download PDFInfo
- Publication number
- CN112225982A CN112225982A CN202011110471.XA CN202011110471A CN112225982A CN 112225982 A CN112225982 A CN 112225982A CN 202011110471 A CN202011110471 A CN 202011110471A CN 112225982 A CN112225982 A CN 112225982A
- Authority
- CN
- China
- Prior art keywords
- parts
- ethylene
- rod position
- nuclear power
- retardant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0869—Acids or derivatives thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
-
- 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
- H01B7/1875—Multi-layer sheaths
-
- 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
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
-
- 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
-
- 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
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- 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
- C08K3/38—Boron-containing compounds
- C08K2003/387—Borates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/22—Halogen free composition
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a rod position reactor top signal cable for a nuclear power station, wherein a first signal wire and a second signal wire form at least one part of a rod position signal loop; the power line is wrapped by the isolation layer; the power line and the first signal line are separated by an isolation layer; the first signal line is positioned in the composite moisture-proof layer, and the second signal line is positioned outside the composite moisture-proof layer; the shielding layer is wrapped on the second signal wire; the flame-retardant belt is wrapped on the shielding layer; the halogen-free flame-retardant sheath is wrapped on the flame-retardant belt; the halogen-free flame-retardant sheath layer comprises the following raw materials in parts by weight: polymeric substrate and radiation graft compatibilizer: 95-105 parts; inorganic flame retardant: 80-100 parts of a binder; zinc borate: 15-25 parts; organic flame retardant hexaphenoxycyclotriphosphazene: 8-12 parts; ammonium octamolybdate as smoke agent: 1-3 parts; compound antioxidant: 4-8 parts; an anti-irradiation agent: 3-8 parts; lubricant: 3-5 parts. The invention can not crack when used in the environment of 90 ℃ and 2000kGy irradiation dose.
Description
Technical Field
The invention relates to the technical field of cables, in particular to a rod position reactor top signal cable for a nuclear power station.
Background
The reactor is a core device of a nuclear power station, and a position monitoring system (rod position control system for short) of a reactor control rod is a key instrument and a control system for controlling the power of the reactor. It can be manually operated or automatically adjusted to adjust or maintain reactor power by changing the position of the control rods in the reactor core or the boron concentration in the core coolant. The starting, stopping, power regulation, neutron flux flattening and emergency shutdown of the nuclear power plant are all realized by controlling a control rod for regulating the reactor power. It is one of the important devices that are relevant to the reliable operation of nuclear power plants.
The rod position control system is an important component of a nuclear power station control system and is one of important links for ensuring the safety of the nuclear power station. One part of the cable is laid in a reactor plant, the other part of the cable is laid outside the reactor plant, and special requirements in the aspects of irradiation resistance, high temperature resistance, excellent electrical and mechanical properties and the like are required to be met.
The cable of the rod position control system can be divided into a rod position pile top cable and a rod position special cable, the rod position pile top cable uses a mineral insulated cable, the cable adopts inorganic insulating materials such as magnesium oxide and the like, an outer sheath is a metal sleeve, the cable is very hard and not easy to bend, although the existing cable has good high-temperature resistance and radiation resistance, the installation and maintenance are very inconvenient, and the requirement of a third-generation nuclear power station cannot be met.
Disclosure of Invention
The invention aims to provide a rod position reactor top signal cable for a nuclear power station, which is not cracked when used in an environment with the irradiation dose of 90 ℃ and 2000 kGy.
Rod position reactor top signal cable for nuclear power station includes:
the power line provides required working current for the rod position detector;
a plurality of first signal lines for connecting the rod position detectors;
the second signal line is used for connecting the rod position controller, and the first signal line and the second signal line form at least one part of a rod position signal loop;
the power line is wrapped by the isolation layer; the power line and the first signal line are separated by an isolation layer;
the first signal wire is wrapped by the composite moisture-proof layer, the first signal wire is positioned in the composite moisture-proof layer, and the second signal wire is positioned outside the composite moisture-proof layer;
the shielding layer is wrapped on the second signal wire;
the flame-retardant belt is wrapped on the shielding layer;
the halogen-free flame-retardant sheath is wrapped on the flame-retardant belt;
the halogen-free flame-retardant sheath layer comprises the following raw materials in parts by weight:
polymeric substrate and radiation graft compatibilizer: 95-105 parts; inorganic flame retardant: 80-100 parts of a binder; zinc borate: 15-25 parts; organic flame retardant hexaphenoxycyclotriphosphazene: 8-12 parts; ammonium octamolybdate as smoke agent: 1-3 parts; anti-aging agent RD (2, 2, 4-trimethyl-1, 2-dihydroquinoline polymer): 1-3 parts; compound antioxidant: 4-8 parts; an anti-irradiation agent: 3-8 parts; lubricant: 3-5 parts;
wherein the polymer substrate comprises an ethylene-vinyl acetate copolymer, an ethylene-ethyl acrylate copolymer and an ethylene-methyl methacrylate copolymer;
the radiation grafting compatilizer comprises ethylene-vinyl acetate copolymer of radiation grafting maleic anhydride and/or linear low-density polyethylene of radiation grafting maleic anhydride and/or ethylene-octene copolymer of radiation grafting maleic anhydride;
the composite antioxidant comprises a main antioxidant, an auxiliary antioxidant and an ultraviolet absorbent, wherein:
the main antioxidant comprises pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and/or octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate and/or N, N' -bis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl ] hydrazine;
the auxiliary antioxidant comprises thioester antioxidant of didodecyl thiodipropionate (DLTP) and/or dioctadecyl thiodipropionate (DSTP);
the ultraviolet absorbent comprises 2- (2 '-hydroxy-3', 5 '-ditert-amyl-phenyl) benzotriazole and/or 2- (2' -hydroxy-5 '-tert-octyl-phenyl) benzotriazole and/or 2- (2' -hydroxy-3 ',5' -bis (a, a-dimethylbenzyl) phenyl) benzotriazole;
the anti-irradiation agent comprises an anti-irradiation agent A and an anti-irradiation agent B, wherein the anti-irradiation agent A is high phenyl silicone rubber and/or phenylene silicone rubber, and the anti-irradiation agent B is boron carbide and/or boron nitride;
the lubricant comprises one or more of polyethylene wax, zinc stearate, calcium stearate, ethylene bis stearamide, EBS, and silicone masterbatch.
The invention has the advantages that: the cable provided by the invention adopts the novel halogen-free flame-retardant sheath layer, the halogen-free flame-retardant sheath layer is subjected to a heat aging experiment for 168 hours continuously in a temperature environment of 180 ℃, and an experimental structure shows that the cable completely meets corresponding requirements in the temperature environment. In addition, the cable is durable60In the experiments of 40 times bending and 20 times bending of electrical property of Co source gamma rays (total dose: 2000kGy dose rate: < 10kGy/h), the cable has no cracking. Therefore, the cable disclosed by the invention can bear high temperature and high radiation, the cracking condition is avoided, and the potential safety hazard of the nuclear power station is solved.
Drawings
Fig. 1 is a schematic structural view of a rod position reactor top signal cable for a nuclear power plant according to the present invention.
Detailed Description
As shown in fig. 1, the rod position reactor top signal cable for a nuclear power plant includes: the power line 1, the first signal line 3, the second signal line 5, the isolation layer 2, the composite moisture-proof layer 4, the shielding layer 6 and the flame retardant tape 7, and the following describes the relationship among the parts:
the power cord 1 provides required operating current for the stick position detector, and first signal line 3 is used for connecting the stick position detector, and first signal line 3 is a plurality ofly, and second signal line 5 is used for connecting the stick position controller, and first signal line 3 and second signal line 5 constitute at least a part of stick position signal circuit, and power cord 1 is wrapped up by isolation layer 2, and power cord 1 and first signal line 3 are separated by isolation layer 2.
The first signal wire 3 is wrapped by the composite moisture-proof layer 4, the composite moisture-proof layer 4 consists of a polyimide wrapping tape and a glass fiber wrapping tape wrapping layer from inside to outside, the first signal wire 3 is positioned in the composite moisture-proof layer 4, and the second signal wire 5 is positioned outside the composite moisture-proof layer 4; the shielding layer 6 wraps the second signal wire 5, the shielding layer 6 is of a silver-plated copper wire weaving structure, the flame-retardant belt 7 wraps the shielding layer 6, the halogen-free flame-retardant sheath 8 wraps the flame-retardant belt 7, and the halogen-free flame-retardant sheath 8 wraps the flame-retardant belt 7.
The cable is characterized by further comprising a woven outer protection layer 9 and halogen-free filling 10, wherein the woven outer protection layer 9 is wrapped on the halogen-free flame-retardant sheath 8, the woven outer protection layer 9 is formed by weaving stainless steel wires, and the halogen-free filling 10 is filled between the power line 1 and the first signal line 2.
The halogen-free flame-retardant sheath 8 adopts a new formula, and the specific materials and the preparation method are as follows:
for the convenience of description in the examples that follow, the following substances are set for short, in particular as follows:
for short, ethylene-vinyl acetate copolymers: EVA;
for short, ethylene-ethyl acrylate copolymer: EEA;
the ethylene-methyl methacrylate copolymer is abbreviated as: EMMA
The ethylene-vinyl acetate copolymer of radiation grafted maleic anhydride is abbreviated as: EVA-g-MAH
The linear low density polyethylene radiation grafted with maleic anhydride is abbreviated as: LLDPE-g-MAH;
the ethylene-octene copolymer of radiation grafted maleic anhydride is abbreviated: POE-g-MAH;
for short, linear low density polyethylene: LLDPE;
the ethylene-octene copolymer is abbreviated as: POE;
the main antioxidant comprises pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, which is simply referred to as: 1010;
octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate: 300, respectively;
the abbreviation of N, N' -bis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl ] hydrazine: 1024;
the thioester antioxidant, didodecyl thiodipropionate, is abbreviated as: DLTP;
dioctadecyl thiodipropionate abbreviated as: DSTP;
2- (2' -hydroxy-3 ',5' -ditert-pentylphenyl) benzotriazole: UV 328;
for 2- (2 '-hydroxy-5' -tert-octylphenyl) benzotriazole: UL 328;
2- (2' -hydroxy-3 ',5' -bis (a, a-dimethylbenzyl) phenyl) benzotriazole: UL 234.
The halogen-free flame-retardant sheath 8 comprises the following raw materials in parts by weight:
polymer substrate and shot-graft compatibilizer: 95-105 parts; inorganic flame retardant: 80-100 parts of a binder; zinc borate: 15-25 parts; organic flame retardant hexaphenoxycyclotriphosphazene: 8-12 parts; ammonium octamolybdate as smoke agent: 1-3 parts; anti-aging agent RD (2, 2, 4-trimethyl-1, 2-dihydroquinoline polymer): 1-3 parts; compound antioxidant: 4-8 parts; an anti-irradiation agent: 3-8 parts; lubricant: 3-5 parts.
Wherein the polymer substrate comprises ethylene-vinyl acetate copolymer (EVA), ethylene-ethyl acrylate copolymer (EEA) and ethylene-methyl methacrylate copolymer (EMMA), and the amount of vinyl acetate, ethyl acrylate and methyl methacrylate in the ethylene-vinyl acetate copolymer (EVA), the ethylene-ethyl acrylate copolymer (EEA) and the ethylene-methyl methacrylate copolymer (EMMA) is 14-40% of the total amount of the polymer substrate;
the melt index MI of ethylene-vinyl acetate copolymer (EVA), ethylene-ethyl acrylate copolymer (EEA) and ethylene-methyl methacrylate copolymer (EMMA) is 2-6.
The radiation grafting compatilizer comprises ethylene-vinyl acetate copolymer (EVA-g-MAH) of radiation grafted maleic anhydride and/or linear low density polyethylene (LLDPE-g-MAH) of radiation grafted maleic anhydride and/or ethylene-octene copolymer (POE-g-MAH) of radiation grafted maleic anhydride.
The radiation grafting compatilizer is prepared by the following method: dissolving 1-5 parts of maleic anhydride in 10 parts of acetone, mixing 0.1-0.5 part of main antioxidant and 95-105 parts of ethylene-vinyl acetate copolymer (EVA) or 95-105 parts of Linear Low Density Polyethylene (LLDPE) or 100 parts of ethylene-octene copolymer (POE) in a high-speed mixer at the temperature of 30-50 ℃ for 5-15 minutes, extruding water-cooling strand-drawing and grain-cutting in a double-screw extruder at the temperature of 100 ℃ after the acetone is completely volatilized to obtain ungrafted master batches, placing the ungrafted master batches on a radiation trolley flat plate under a 3-5M electron accelerator, wherein the thickness of the ungrafted master batches is not more than 2cm, the radiation dose is 10-25kGy, and preparing the radiation grafting compatilizer with the grafting rate of 1-3% and the gel content of not more than 10%.
The weight portion ratio of ethylene-vinyl acetate copolymer (EVA-g-MAH) of radiation grafting maleic anhydride, linear low-density polyethylene (LLDPE-g-MAH) of radiation grafting maleic anhydride, ethylene-octene copolymer (POE-g-MAH) of radiation grafting maleic anhydride, ethylene-vinyl acetate copolymer (EVA), ethylene-ethyl acrylate copolymer (EEA) and ethylene-methyl methacrylate copolymer (EMMA) is 0-5: 5-10: 0-5: 0-20: 20-50: 10-30.
The inorganic flame retardant comprises magnesium hydroxide and aluminum hydroxide, wherein the weight part ratio of the magnesium hydroxide to the aluminum hydroxide is (40-60): 20-40.
The composite antioxidant comprises a main antioxidant, an auxiliary antioxidant and an ultraviolet absorbent, wherein:
the main antioxidant comprises pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] (1010) and/or octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate (300) and/or N, N' -bis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl ] hydrazine (1024).
The auxiliary antioxidant comprises thioester antioxidant of didodecyl thiodipropionate (DLTP) and/or dioctadecyl thiodipropionate (DSTP).
The ultraviolet absorbent comprises 2- (2 '-hydroxy-3', 5 '-ditert-amyl-phenyl) benzotriazole (UV328) and/or 2- (2' -hydroxy-5 '-tert-octyl-phenyl) benzotriazole (UL328) and/or 2- (2' -hydroxy-3 ',5' -bis (a, a-dimethylbenzyl) phenyl) benzotriazole (UL 234).
The weight part ratio of the pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] (1010), the octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate (300) and the N, N' -bis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl ] hydrazine (1024) is 1: 0.5-1.5: 0.5-1.5.
The anti-irradiation agent comprises an anti-irradiation agent A and an anti-irradiation agent B, wherein the anti-irradiation agent A is high phenyl silicone rubber and/or phenylene silicone rubber, and the anti-irradiation agent B is boron carbide and/or boron nitride; the weight part ratio of the high phenyl silicone rubber and the phenylene silicone rubber in the anti-irradiation agent A is 8-12: 0-2, wherein the weight part ratio of boron carbide to boron nitride in the anti-radiation agent B is 1-2: 1-2.
The lubricant comprises one or more of polyethylene wax, zinc stearate, calcium stearate, ethylene bis stearamide, EBS, and silicone masterbatch.
The preparation method of the halogen-free flame-retardant sheath layer 8 comprises the steps of putting a polymer base material, magnesium hydroxide and aluminum hydroxide in an inorganic flame retardant, zinc borate, an organic flame retardant hexaphenoxycyclotriphosphazene, a smoke agent ammonium octamolybdate, an anti-aging agent RD (2, 2, 4-trimethyl-1, 2-dihydroquinoline polymer), a composite antioxidant, an anti-irradiation agent B and a lubricant into an internal mixer for mixing, mixing for 4-6 minutes after melting to 125-135 ℃, then adding the anti-irradiation agent A, mixing for 5-10 minutes within the temperature range of 130-150 ℃, then lifting to a double-stage double-screw extruder, and carrying out air cooling extrusion granulation within the temperature range of 120-160 ℃.
The prepared particles are melted and extruded at the temperature of 120-160 ℃ in a single-screw extruder to form the halogen-free flame-retardant sheath of the cable of the nuclear power station.
According to the method for testing the service life of the prepared sheath, a thermal life test of the nuclear power halogen-free flame-retardant sheath material is carried out according to GB/T1040.3-2006, the test sample is a 5-type dumbbell sheet, the thickness is 2.0 +/-0.2 mm, a natural ventilation electric heating ageing oven is adopted, the number of times of air replacement in the ageing oven per hour is 8-20, the test temperatures are 180 +/-2 ℃ and 165 +/-2 ℃ respectively, the test sample is placed on a stainless steel flat plate with talcum powder spread in the ageing oven, the test temperatures are 150 +/-2 ℃ and 135 +/-2 ℃, the test sample is vertically hung in an effective working area in the middle of the ageing oven, and after ageing at 4 temperature points, the service life of the three-generation nuclear power halogen-free flame-retardant sheath material is deduced according to Arrhenius equation.
The invention is further illustrated by the following examples.
| | Case | 1 | |
|
| EVA | 95 | 95 | 95 | |
| Antioxidant 1010 | 0 | 0.1 | 0.5 | |
| Maleic Anhydride (MAH) | 3 | 3 | 3 | |
| Acetone (II) | 10 | 10 | 10 |
The method comprises the following operation steps:
dissolving 3 parts of maleic anhydride in 10 parts of acetone, mixing the maleic anhydride with 0-0.5 part of main antioxidant 1010 and 95 parts of ethylene-vinyl acetate copolymer in a high-speed mixer at the temperature of 30-50 ℃ for 5-15 minutes, extruding out water-cooled drawing strips and cutting granules in a double-screw extruder at the temperature of 100 ℃ and 150 ℃ after the acetone is completely volatilized to obtain ungrafted master batches, placing the ungrafted master batches on an irradiation trolley flat plate under a 3-5M electronic accelerator, wherein the thickness of the ungrafted master batches is not more than 2cm (too thick, the accelerator cannot completely penetrate the ungrafted master batches), and the irradiation dose is 20kGy to obtain the radiation grafting compatilizer with the grafting rate of 1-3% and the gel content of less than or equal to 10%.
EXAMPLES 1 to 3 Performance test
| | Case | 1 | |
|
| 1. Tensile Strength (MPa) | 12.8 | 13.3 | 13.8 | |
| 2. Elongation at Break (%) | 680.34 | 709.12 | 725.11 | |
| 3. Graft ratio (%) | 1.25 | 1.21 | 1.18 | |
| 4. Gel content (%) | 8.86 | 8.09 | 7.87 |
The comparison of the ethylene-vinyl acetate copolymer of radiation grafted maleic anhydride prepared in cases 1-3 of the present invention with the properties of the EVA material shows that the EVA material has the lowest strength and the highest elongation, while the EVA material grafted by radiation has the highest strength and the lowest elongation due to radiation grafting, and meanwhile, the molecular bond of the polymer is partially broken under the action of high shear of the EVA material heated in a twin-screw extruder, and if no antioxidant material is added, the breaking degree of the molecular bond is significantly greater than that of the antioxidant material, which is mainly reflected in the mechanical properties of the material.
The invention is further illustrated by the following specific examples.
Example 1
Raw materials:
the method comprises the following operation steps:
radiation grafting compatilizers EVA-g-MAH, LLDPE-g-MAH, polymer base material: EVA, EEA, EMMA, antioxidant RD2, 2, 4-trimethyl-1, 2-dihydroquinoline polymer), primary antioxidant: 1010. 1024, secondary antioxidant: DLTP, ultraviolet absorber: placing UV328, zinc stearate, ethylene bis stearamide EBS, silicone master batch, ammonium octamolybdate, boron carbide, magnesium hydroxide, aluminum hydroxide, zinc borate, hexaphenoxycyclotriphosphazene and environment-friendly black master batch into a 75-liter internal mixer, mixing for 6 minutes at 125 ℃ after melting, then adding an anti-irradiation agent of high phenyl silicone rubber (the phenyl content is 40%) and phenylene silicone rubber (the phenylene content is 60%), mixing for 10 minutes at 130 ℃, then lifting to a double-stage double-screw extruder, and carrying out air-cooling extrusion granulation at 150 ℃ to obtain the product;
example 2
Raw materials:
the method comprises the following operation steps:
radiation grafting of a compatibilizer: EVA-g-MAH, POE-g-MAH, polymer substrate: EVA, EEA, EMMA, antioxidant RD (2, 2, 4-trimethyl-1, 2-dihydroquinoline polymer), antioxidant: 1010. 1024, secondary antioxidant: DLTP, ultraviolet absorber: placing UV328, zinc stearate, Ethylene Bis Stearamide (EBS), silicone master batch, ammonium octamolybdate, boron carbide, magnesium hydroxide, aluminum hydroxide, zinc borate, hexaphenoxycyclotriphosphazene and environment-friendly black master batch into a 75-liter internal mixer, mixing for 5.5 minutes after melting to about 128 ℃, then adding an anti-irradiation agent high phenyl silicone rubber (with the phenyl content of 40%) and phenylene silicone rubber (with the phenylene content of 60%), mixing for 9 minutes at 135 ℃, then lifting to a double-stage double-screw extruder, and carrying out air-cooling extrusion granulation at 155 ℃ to obtain the product;
example 3
Raw materials:
the method comprises the following operation steps:
radiation grafting compatilizer polymers EVA-g-MAH and POE-g-MAH, and a polymer substrate: EVA, EEA, EMMA, antioxidant RD (2, 2, 4-trimethyl-1, 2-dihydroquinoline polymer), primary antioxidant: 1010. 1024, secondary antioxidant: DLTP, ultraviolet absorber: placing UV328, zinc stearate, Ethylene Bis Stearamide (EBS), silicone master batch, ammonium octamolybdate, boron carbide, magnesium hydroxide, aluminum hydroxide, zinc borate, hexaphenoxycyclotriphosphazene and environment-friendly black master batch into a 75-liter internal mixer, mixing for 5 minutes at 130 ℃ after melting, then adding an anti-irradiation agent high phenyl silicone rubber (with the phenyl content of 40%), mixing for 8 minutes at 138 ℃, then lifting to a double-stage double-screw extruder, and performing air-cooled extrusion granulation at 145 ℃ to obtain the high-performance silicon rubber;
example 4
Raw materials:
the method comprises the following operation steps:
radiation grafting of a compatibilizer: EVA-g-MAH, POE-g-MAH, LLDPE-g-MAH, polymer base material: EVA, EEA, EMMA, antioxidant RD (2, 2, 4-trimethyl-1, 2-dihydroquinoline polymer), primary antioxidant 1010, 1024, secondary antioxidant: DLTP, ultraviolet absorber: placing UV328, zinc stearate, Ethylene Bis Stearamide (EBS), silicone master batch, ammonium octamolybdate, boron carbide, magnesium hydroxide, aluminum hydroxide, zinc borate, hexaphenoxycyclotriphosphazene and environment-friendly black master batch into a 75-liter internal mixer, mixing for 4.8 minutes at 132 ℃ after melting, then adding an anti-irradiation agent high phenyl silicone rubber (with the phenyl content of 40%), mixing for 7 minutes at 140 ℃, lifting to a double-stage double-screw extruder, and carrying out air-cooled extrusion granulation at 140 ℃ to obtain the high-performance silicon rubber;
example 5
Raw materials:
the method comprises the following operation steps:
radiation grafting of a compatibilizer: POE-g-MAH, EVA-g-MAH, polymer substrate: EVA, EEA, EMMA, antioxidant RD (2, 2, 4-trimethyl-1, 2-dihydroquinoline polymer), primary antioxidant: 1010. 1024, secondary antioxidant: DLTP, ultraviolet absorber: placing UV328, zinc stearate, Ethylene Bis Stearamide (EBS), silicone master batch, ammonium octamolybdate, boron carbide, magnesium hydroxide, aluminum hydroxide, zinc borate, hexaphenoxycyclotriphosphazene and environment-friendly black master batch into a 75-liter internal mixer, mixing for 4.5 minutes after melting to about 134 ℃, then adding an anti-irradiation agent high phenyl silicone rubber (with the phenyl content of 40%), mixing for 6 minutes at the temperature of 144 ℃, lifting to a double-stage double-screw extruder, and carrying out air-cooled extrusion granulation at the temperature of 135 ℃ to obtain the high phenyl silicone rubber;
example 6
Raw materials:
the method comprises the following operation steps:
radiation grafting of a compatibilizer: POE-g-MAH, EVA-g-MAH, polymer substrate: EVA, EEA, EMMA, antioxidant RD (2, 2, 4-trimethyl-1, 2-dihydroquinoline polymer), primary antioxidant 1010, 1024, secondary antioxidant: DLTP, ultraviolet absorber: placing UV328, zinc stearate, Ethylene Bis Stearamide (EBS), silicone master batch, ammonium octamolybdate, boron carbide, magnesium hydroxide, aluminum hydroxide, zinc borate, hexaphenoxycyclotriphosphazene and environment-friendly black master batch into a 75-liter internal mixer, mixing for 4.3 minutes after melting to about 134 ℃, then adding an anti-irradiation agent high phenyl silicone rubber (with the phenyl content of 40%), mixing for 6 minutes at 147 ℃, then lifting to a double-stage double-screw extruder, and carrying out air-cooled extrusion granulation at 130 ℃ to obtain the high phenyl silicone rubber;
example 7
Raw materials:
radiation grafting of a compatibilizer: POE-g-MAH, EVA-g-MAH, polymer: EVA, EEA, EMMA, antioxidant RD (2, 2, 4-trimethyl-1, 2-dihydroquinoline polymer), primary antioxidant: 1010. 1024, secondary antioxidant: DLTP, ultraviolet absorber: placing UV328, zinc stearate, Ethylene Bis Stearamide (EBS), silicone master batch, ammonium octamolybdate, boron carbide, magnesium hydroxide, aluminum hydroxide, zinc borate, hexaphenoxycyclotriphosphazene and environment-friendly black master batch into a 75-liter internal mixer, mixing for 4 minutes after melting to about 135 ℃, then adding an anti-irradiation agent high phenyl silicone rubber (with the phenyl content of 40%), mixing for 5 minutes at the temperature of 150 ℃, then lifting to a double-stage double-screw extruder, and carrying out air-cooling extrusion granulation at the temperature of 125 ℃ to obtain the high phenyl silicone rubber;
application examples
The particle material of the third-generation nuclear power halogen-free flame-retardant sheath of the embodiments 1-7 is melted and extruded at the temperature of 120-160 ℃ of a phi 45-120 single-screw extruder according to the GB/T12706.1-2008 cable manufacturing method to form the halogen-free flame-retardant sheath of the nuclear power plant cable, the sheath is coated on the radiation cross-linked double-layer insulating core wire and/or the coated halogen-free flame-retardant filling layer (oxygen barrier) cable, and the thickness of the sheath can be determined according to various cable specification requirements.
The performance of the third-generation nuclear power halogen-free flame-retardant sheath material and the cable prepared from the same are shown in the table.
Table 1: test methods and standards of each test item:
TABLE 2 halogen-free flame-retardant sheathing compound and cable Properties
Table 2 (continuation)
By comparing the third-generation nuclear power halogen-free flame-retardant sheath material prepared in the embodiments 1 to 7 of the invention and the performance of the nuclear power cable prepared from the same, the following results can be obtained:
(1) the formulations of example 1 and example 2 are adopted, the POE-g-MAH in example 2 replaces the LLDPE-g-MAH in example 1, the other formulation components are kept consistent, the tensile strength of example 2 is slightly lower than that of example 1, the elongation at break is slightly higher, the other properties are basically kept consistent, and POE belongs to polyolefin elastomer, the tensile strength of POE is lower than that of LLDPE, and the elongation at break is higher.
(2) The formulations of the embodiment 2 and the embodiment 3 are adopted, the content of phenylene in the radiation resistant agent phenylene silicone rubber (the content of phenylene in the silicone rubber is 60%) is reduced in the embodiment 3, the components of the other formulations are kept consistent, and the radiation resistance of the embodiment 3 is obviously reduced compared with that of the embodiment 2, which shows that the phenylene silicone rubber (the content of phenylene in the silicone rubber is 60%) has excellent radiation resistance, but the cost is high, and the raw materials are not easy to purchase.
(3) The formulations of example 3 and example 4, example 4 adopted three compatilizers, the weight is 7.5kg, the weight of EMMA is 22.5kg, example 3 adopted two compatilizers, the weight is 5kg, the weight of EMMA is 25kg, other formulation components are kept consistent, the performance of example 4 is improved, the strength is improved, the elongation is reduced, the aging performance is slightly reduced, the material strength can be improved by increasing the types and the weights of the compatilizers, but the elongation is reduced at the same time, and the EMMA heat resistance is better than that of the compatilizers.
(4) The formulations of the embodiment 5 and the embodiment 3 are that the inorganic flame retardants magnesium hydroxide and aluminum hydroxide are exchanged by weight, the elongation at break of the embodiment 5 is obviously improved compared with that of the embodiment 3, the aging performance is slightly lower, the flame retardant performance is obviously reduced, the small-sized cable is unqualified in flame retardant, the aluminum hydroxide is obviously inferior to the magnesium hydroxide in flame retardant performance, the heat resistance is slightly inferior, but the compatibility with the polymer is much better than that of the magnesium hydroxide.
(5) The formulations of examples 6 and 3 are shown, wherein 10kg of zinc borate and 3kg of hexaphenoxycyclotriphosphazene are used in example 6, 8kg of zinc borate and 5kg of hexaphenoxycyclotriphosphazene are used in example 3, the flame retardance of the cable with small specification is obviously reduced, but the smoke density of the material is better, and the flame retardance of the hexaphenoxycyclotriphosphazene is obviously better than that of the zinc borate, but the smoke density is higher.
(6) The formulations of example 7 and example 6 are shown, wherein the zinc borate is 5kg, the hexaphenoxy cyclotriphosphazene is 8kg in example 7, the zinc borate is 10kg in example 6, and the hexaphenoxy cyclotriphosphazene is 3kg, and the material of example 7 has good flame retardant property, but the smoke density is obviously increased, and the smoke density of a large-specification cable is unqualified. The obtained hexaphenoxycyclotriphosphazene has good flame retardance but high smoke density, and the dosage is controlled when the hexaphenoxycyclotriphosphazene is used.
Claims (9)
1. Rod position pile top signal cable for nuclear power station, its characterized in that includes:
rod position pile top signal cable for nuclear power station, its characterized in that includes:
a power line (1) for providing the required working current for the rod position detector;
a plurality of first signal lines (3) for connecting the rod position detectors;
a second signal line (5) for connecting the rod position controller, the first signal line (3) and the second signal line (5) constituting at least a part of a rod position signal loop;
the power line (1) is wrapped by the isolation layer (2); the power line (1) and the first signal line (3) are separated by the isolation layer (2);
the first signal wire (3) is wrapped by the composite moisture-proof layer (4), the first signal wire (3) is positioned in the composite moisture-proof layer (4), and the second signal wire (5) is positioned outside the composite moisture-proof layer (4);
the shielding layer (6), the shielding layer (6) wraps the second signal line (5);
the flame-retardant belt (7), the flame-retardant belt (7) wraps the shielding layer (6);
the halogen-free flame-retardant sheath (8), the halogen-free flame-retardant sheath (8) is wrapped on the flame-retardant belt (7);
the halogen-free flame-retardant sheath (8) comprises the following raw materials in parts by weight:
polymeric substrate and radiation graft compatibilizer: 95-105 parts; inorganic flame retardant: 80-100 parts of a binder; zinc borate: 15-25 parts; organic flame retardant hexaphenoxycyclotriphosphazene: 8-12 parts; ammonium octamolybdate as smoke agent: 1-3 parts; anti-aging agent RD (2, 2, 4-trimethyl-1, 2-dihydroquinoline polymer): 1-3 parts; compound antioxidant: 4-8 parts; an anti-irradiation agent: 3-8 parts; lubricant: 3-5 parts;
wherein the polymer substrate comprises an ethylene-vinyl acetate copolymer, an ethylene-ethyl acrylate copolymer and an ethylene-methyl methacrylate copolymer;
the radiation grafting compatilizer comprises ethylene-vinyl acetate copolymer of radiation grafting maleic anhydride and/or linear low-density polyethylene of radiation grafting maleic anhydride and/or ethylene-octene copolymer of radiation grafting maleic anhydride;
the composite antioxidant comprises a main antioxidant, an auxiliary antioxidant and an ultraviolet absorbent, wherein:
the main antioxidant comprises pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and/or octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate and/or N, N' -bis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl ] hydrazine;
the auxiliary antioxidant comprises thioester antioxidant of didodecyl thiodipropionate (DLTP) and/or dioctadecyl thiodipropionate (DSTP);
the ultraviolet absorbent comprises 2- (2 '-hydroxy-3', 5 '-ditert-amyl-phenyl) benzotriazole and/or 2- (2' -hydroxy-5 '-tert-octyl-phenyl) benzotriazole and/or 2- (2' -hydroxy-3 ',5' -bis (a, a-dimethylbenzyl) phenyl) benzotriazole;
the anti-irradiation agent comprises an anti-irradiation agent A and an anti-irradiation agent B, wherein the anti-irradiation agent A is high phenyl silicone rubber and/or phenylene silicone rubber, and the anti-irradiation agent B is boron carbide and/or boron nitride;
the lubricant comprises one or more of polyethylene wax, zinc stearate, calcium stearate, ethylene bis stearamide, EBS, and silicone masterbatch.
2. The rod position reactor head signal cable for the nuclear power plant as recited in claim 1, further comprising a halogen-free filler (10), wherein the halogen-free filler (10) is filled between the power line (1) and the first signal line (2).
3. The rod position reactor top signal cable for the nuclear power station as claimed in claim 1, wherein the braided outer sheath (9) is wrapped on the halogen-free flame retardant sheath (8) by the braided outer sheath (9).
4. The rod position reactor top signal cable for the nuclear power station as claimed in any one of claims 1 to 3, wherein the composite moisture-proof layer is composed of a polyimide wrapping tape and a glass fiber tape wrapping layer from inside to outside.
5. The rod position reactor top signal cable for the nuclear power station as claimed in claim 1, wherein the radiation grafting compatilizer is prepared by the following method: dissolving 1-5 parts of maleic anhydride in 10 parts of acetone, mixing with 0-0.5 part of main antioxidant and 95-105 parts of ethylene-vinyl acetate copolymer or 95-105 parts of linear low-density polyethylene or 100 parts of ethylene-octene copolymer in a high-speed mixer at the temperature of 30-50 ℃ for 5-15 minutes, extruding out water-cooling ribbing and grain-cutting in a double-screw extruder at the temperature of 100 ℃ and 150 ℃ after the acetone is completely volatilized to obtain ungrafted master batches, placing the ungrafted master batches on an irradiation trolley flat plate under a 3-5M electron accelerator, wherein the thickness of the ungrafted master batches is not more than 2cm, the irradiation dose is 10-25kGy, and preparing the radiation grafting compatilizer with the grafting rate of 1-3 percent and the gel content of less than or equal to 10 percent.
6. The rod position reactor head signal cable for the nuclear power station as claimed in claim 1, wherein the weight part ratio of the radiation grafted maleic anhydride ethylene-vinyl acetate copolymer, the radiation grafted maleic anhydride linear low density polyethylene, the radiation grafted maleic anhydride ethylene-octene copolymer, the ethylene-vinyl acetate copolymer, the ethylene-ethyl acrylate copolymer and the ethylene-methyl methacrylate copolymer is 0-5: 5-10: 0-5: 0-20: 20-50: 10-30.
7. The rod position reactor top signal cable for a nuclear power plant according to claim 1, wherein the ethylene-vinyl acetate copolymer, the ethylene-ethyl acrylate copolymer, and the ethylene-methyl methacrylate are selected from the group consisting of: the amount of vinyl acetate, ethyl acrylate and methyl methacrylate is 14-40% of the total amount of the polymer base material;
the melt index MI of the ethylene-vinyl acetate copolymer, the ethylene-ethyl acrylate copolymer and the ethylene-methyl methacrylate copolymer is 2-6.
8. The rod position reactor top signal cable for the nuclear power plant as claimed in claim 1, wherein the weight part ratio of the pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], the octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate and the N, N' -bis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl ] hydrazine is 1: 0.5-1.5: 0.5-1.5.
9. The rod position reactor top signal cable for the nuclear power station as claimed in claim 1, wherein the ratio of parts by weight of the high phenyl silicone rubber and the phenylene silicone rubber in the anti-radiation agent A is 8-12: 0-2, wherein the weight part ratio of boron carbide to boron nitride in the anti-radiation agent B is 1-2: 1-2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011110471.XA CN112225982A (en) | 2020-10-16 | 2020-10-16 | Rod position reactor top signal cable for nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011110471.XA CN112225982A (en) | 2020-10-16 | 2020-10-16 | Rod position reactor top signal cable for nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112225982A true CN112225982A (en) | 2021-01-15 |
Family
ID=74118531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011110471.XA Pending CN112225982A (en) | 2020-10-16 | 2020-10-16 | Rod position reactor top signal cable for nuclear power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112225982A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101100537A (en) * | 2006-07-07 | 2008-01-09 | 中国科学院上海应用物理研究所 | Low-smoke halide-free fireproof polyolefine material and its preparation method and application |
| CN107163372A (en) * | 2017-07-20 | 2017-09-15 | 合肥安力电力工程有限公司 | A kind of tension flame-proof cable sheath material and preparation method thereof |
| CN109575409A (en) * | 2018-11-02 | 2019-04-05 | 常州八益电缆股份有限公司 | Nuclear island inner cable halogen-free flameproof jacket material, cable jacket layer and preparation method |
| CN109593260A (en) * | 2018-11-28 | 2019-04-09 | 青岛中科汉缆高分子材料有限公司 | Halogen-free flame-retardant thermal shrinkage material in a kind of nuclear island, halogen-free flameproof heat-shrinkable tube and preparation method thereof in nuclear island |
| WO2020143686A1 (en) * | 2019-01-09 | 2020-07-16 | 上海海优威应用材料技术有限公司 | Ethylene-vinyl acetate synthetic leather substrate, ethylene-vinyl acetate synthetic leather, and surface grafting treatment agent for ethylene-vinyl acetate synthetic leather |
-
2020
- 2020-10-16 CN CN202011110471.XA patent/CN112225982A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101100537A (en) * | 2006-07-07 | 2008-01-09 | 中国科学院上海应用物理研究所 | Low-smoke halide-free fireproof polyolefine material and its preparation method and application |
| CN107163372A (en) * | 2017-07-20 | 2017-09-15 | 合肥安力电力工程有限公司 | A kind of tension flame-proof cable sheath material and preparation method thereof |
| CN109575409A (en) * | 2018-11-02 | 2019-04-05 | 常州八益电缆股份有限公司 | Nuclear island inner cable halogen-free flameproof jacket material, cable jacket layer and preparation method |
| CN109593260A (en) * | 2018-11-28 | 2019-04-09 | 青岛中科汉缆高分子材料有限公司 | Halogen-free flame-retardant thermal shrinkage material in a kind of nuclear island, halogen-free flameproof heat-shrinkable tube and preparation method thereof in nuclear island |
| WO2020143686A1 (en) * | 2019-01-09 | 2020-07-16 | 上海海优威应用材料技术有限公司 | Ethylene-vinyl acetate synthetic leather substrate, ethylene-vinyl acetate synthetic leather, and surface grafting treatment agent for ethylene-vinyl acetate synthetic leather |
Non-Patent Citations (1)
| Title |
|---|
| 陈洪爆: "堆顶电缆和连接器组件的研制", 《电线电缆》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104327367A (en) | Low-smoke low-halogen flame retardant irradiation crosslinking material for great-section wires and cables | |
| CN112321934A (en) | Irradiation crosslinking low-smoke halogen-free flame-retardant polyolefin material for 150 ℃ American standard electronic wire and preparation method thereof | |
| CN111533987B (en) | Halogen-free cross-linked polyolefin cable material for energy storage cable | |
| CN110862604B (en) | Halogen-free flame-retardant sheath material for nuclear power station and preparation method thereof | |
| CN100999598A (en) | Preparation process for cable material of radiation resisting low flue unhalogen flame-retarded ethylpropyl rubber | |
| CN110878155B (en) | Halogen-free flame-retardant external insulation material for nuclear power station cable and preparation method thereof | |
| CN103205062B (en) | A kind of reactor fire retardant thermal shrinkage cable accessory meeting nuclear power station AP1000 designing requirement | |
| US5470657A (en) | Heat-resistant, high-voltage lead wire for direct current | |
| JP2015017164A (en) | Radiation-resistant halogen-free flame-retardant resin composition and electric wire and cable using the same | |
| CN109575409A (en) | Nuclear island inner cable halogen-free flameproof jacket material, cable jacket layer and preparation method | |
| CN103554639B (en) | A kind of production method of environment-friendly halogen-free flame-proof electric wire | |
| CN112225983A (en) | Flame-retardant sheath material for nuclear power station cable, preparation method and service life detection method | |
| CN111961274A (en) | Insulating material for photovoltaic cable and preparation method thereof | |
| CN104987644A (en) | Precipitation-resistant halogen-free flame-retardant wire and cable material free of phosphine and preparation method therefor | |
| CN108034115A (en) | A kind of used in nuclear power station cross-linking radiation insulating material for communication cables and preparation method thereof | |
| CN111234360A (en) | Low-smoke halogen-free flame-retardant rubber sheath material for wind energy cable and preparation method thereof | |
| CN213092897U (en) | Rod position reactor top signal cable for nuclear power station | |
| CN109705426A (en) | Nuclear island inner cable Halogen interior insulation material, cable inner insulating layer and preparation method thereof | |
| CN103194024B (en) | A kind of reactor Flame-retardant wire/cable for nuclear meeting nuclear power station AP1000 designing requirement | |
| CN103232642A (en) | Reactor flame-retardant heat-shrinkable tube meeting nuclear power station AP1000 design requirement | |
| CN107652529A (en) | A kind of halogen-free stibium-free antiflaming high temperature heat-resistant draw material prescription and its production method | |
| CN112225982A (en) | Rod position reactor top signal cable for nuclear power station | |
| CN113896976A (en) | Ceramizable irradiation crosslinking low-smoke halogen-free flame-retardant polyolefin composition and preparation method thereof | |
| JP2021521303A (en) | Polyolefin additive formulation | |
| CN109593260A (en) | Halogen-free flame-retardant thermal shrinkage material in a kind of nuclear island, halogen-free flameproof heat-shrinkable tube and preparation method thereof in nuclear island |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210115 |
|
| RJ01 | Rejection of invention patent application after publication |