Resistance to irradiation nuclear grade cable low-smoke halogen-free flame-retardant sheath material
Technical field
The present invention relates to nuclear grade cable low-smoke halogen-free flame-retardant sheath material, more particularly to resistance to irradiation nuclear grade cable with low cigarette without
Halogen flame-retardant sheath material.
Background technology
Nuclear power is a kind of safe and clean, reliable energy, greatly develops nuclear power and has with environmental protection to solving energy crisis
There is very important meaning.According to the ENERGY PLANNING that China is newest, nuclear power station will become one of mainstay of electric structure.In advance
Counting the proportion in the year two thousand twenty nuclear power China total power generating capacity will rise to 4% from current 1.8%.Premier of the State Council Li Keqiang in
Point out when August holds Executive Meeting of the State Council on 27th within 2014, to greatly develop clean energy resource, and go into operation in this year and next year
Build a collection of coastal new nuclear power projects.August in 2014 afternoon on the 22nd, Chinese Guang He groups and China National Nuclear Corporation are successively at it
Official website issues " news of victory ", claims nuclear power authorities to agree to " No. Hua Longyi " nuclear power technology that Liang great nuclear powers group jointly makes
The decision of integration program." No. Hua Longyi " is considered the milestone of China's Generation Ⅲ autonomy-oriented, realizes that nuclear power is exported
A trump.The core requirement life-span of three generations's nuclear power technology reaches 60 years, and two generations for designing originally or the cable of two generation half
Life-span is 40 years, therefore the projected life of cable material is badly in need of improving.
China's nuclear grade cable research and development ability disconnects with growth requirement, and particularly, nuclear grade cable and the excessive foreign countries that rely on of material enter
Mouthful, the formula and production technology of China K3 class CABLE MATERIALSs are still rested in minority cable factory and CABLE MATERIALS manufacturer's hand.But receive
The restriction of its production capacity and wish the strong will held monopoly position, the production domesticization for limiting nuclear grade cable and material is entered
Journey.For K1 class CABLE MATERIALSs, existing producer of the country has carried out researching and developing and having applied some patents successively, but actually can criticize
Amount production provides the producer of K1 class CABLE MATERIALSs almost not to be had, and product variety is also extremely limited.
The content of the invention
It is an object of the invention to provide a kind of resistance to irradiation nuclear grade cable low-smoke halogen-free flame-retardant sheath material, the low smoke and zero halogen resistance
Combustion protective cover material had both improve insulating properties while improve fire resistance, also improved the radiation resistance of base material itself, heat-resisting
The combination properties such as performance, high flame resistance, high insulating property, the insulation core wire for making cables of nuclear power just can using single layer structure
Excellent requirement is realized, cable working technology is simplified.
To achieve the above object of the invention, the technical solution used in the present invention is:A kind of resistance to irradiation nuclear grade cable with low cigarette without
Halogen flame-retardant sheath material, it is characterised in that:The low-smoke halogen-free flame-retardant sheath material is made up of the component of following weight portion:
100 parts of ternary ethylene-propylene copolymer,
5 ~ 20 parts of polyimides,
35 ~ 50 parts of magnesium hydroxide,
24 ~ 32 parts of silica,
18 ~ 26 parts of antimony oxide,
4 ~ 9 parts of alundum (Al2O3),
8 ~ 10 parts of zinc oxide,
2 ~ 3.5 parts of cumyl peroxide,
1.5 ~ 3.5 parts of di-iron trioxide,
0.4 ~ 0.8 part of calcium oxide,
0.6 ~ 1 part of magnesia,
2,2,4- trimethyl -1,2.4 ~ 2.6 parts of 2- dihyaroquinolines condensate,
2 ~ 3 parts of 2-mercaptobenzimidazole,
Vinyl three('beta '-methoxy ethyoxyl)1 ~ 3 part of silane,
0.5 ~ 5 part of lubricant;
The average grain diameter of the polyimides is 10 ~ 20 μm, and the average grain diameter of the magnesium hydroxide is 0.8 ~ 1.5 μm.
The further improved technical scheme of technical scheme of above-mentioned low-smoke halogen-free flame-retardant isolating material is as follows:
1. in such scheme, the lubricant is PE waxes either silicone or stearic acid.
2. in such scheme, ethylene contents >=60% of the ternary ethylene-propylene copolymer.
3. in such scheme, the Mooney viscosity ML of the ternary ethylene-propylene copolymer(1+4)125℃≤45.
Due to the utilization of above-mentioned technical proposal, the present invention has compared with prior art following advantages:
1. resistance to irradiation nuclear grade cable low-smoke halogen-free flame-retardant sheath material of the invention, it is in 100 parts of ternary ethylene-propylene copolymer, peroxide
Change in 2 ~ 3.5 parts of diisopropylbenzene (DIPB), 8 ~ 10 parts of zinc oxide, magnesium hydroxide and antimony oxide formula by adding polyimides, carry
The combination properties such as high radiation resistance, heat resistance, high flame resistance, the high insulating property of base material itself, also reduce hydrogen-oxygen
Change magnesium and antimony oxide usage amount, improve insulating properties;Secondly, vinyl three is added in formula('beta '-methoxy ethyoxyl)
1 ~ 3 part of silane, 0.5 ~ 5 part of lubricant, 0.4 ~ 0.8 part of calcium oxide, the tight ness rating of 0.6 ~ 1 part of raising product of magnesia, exclude material
Material micropore, improves immersion, resistance to steam performance, meets the requirement of nuclear power Insulation Material combination property.
2. resistance to irradiation nuclear grade cable low-smoke halogen-free flame-retardant sheath material of the invention, its 100 parts of ternary ethylene-propylene copolymer,
It is sub- by addition polyamides in 2 ~ 3.5 parts of cumyl peroxide, 8 ~ 10 parts of zinc oxide, magnesium hydroxide and antimony oxide formula
Amine, 2,2,4- trimethyl -1,2.4 ~ 2.6 parts of 2- dihyaroquinolines condensate, 2 ~ 3 parts of 2-mercaptobenzimidazole improves insulation
Performance improves fire resistance simultaneously, also;Secondly, 24 ~ 32 parts of silica, 4 ~ 9 parts of alundum (Al2O3), three oxidations are added in formula
Two 1.5 ~ 3.5 parts of iron, can improve insulaion resistance and improve two powers to Insulation Material, not reduce fire resistance, make nuclear power station
The insulation core wire of cable just disclosure satisfy that the requirement of cable using single layer structure, simplify cable working technology.
3. resistance to irradiation nuclear grade cable low-smoke halogen-free flame-retardant sheath material of the invention, the average grain diameter of its polyimides is 10 ~
20 μm, the average grain diameter of magnesium hydroxide is 0.8 ~ 1.5 μm, and the average grain diameter of the antimony oxide is 0.5 ~ 2.5 μm, calcining pottery
Native average grain diameter is 1 ~ 2 μm, if above-mentioned modifying agent and filler particle diameter are meticulous, the elongation of final mixture is low, stream
Dynamic property is deteriorated, and is unfavorable for the processing technology that cable is extruded, if particle diameter is excessive, the tensile strength of mixture is low, and resistance
Combustion property, the combination property such as light transmittance can be deteriorated and affect any surface finish exquisiteness degree.
Specific embodiment
With reference to embodiment, the invention will be further described:
Embodiment 1:A kind of resistance to irradiation nuclear grade cable low-smoke halogen-free flame-retardant sheath material, the fire-retardant high insulated cable material is by following
The component composition of weight portion:
100 parts of ternary ethylene-propylene copolymer,
12 parts of polyimides,
48 parts of magnesium hydroxide,
32 parts of silica,
20 parts of antimony oxide,
5 parts of alundum (Al2O3),
10 parts of zinc oxide,
2.5 parts of cumyl peroxide,
1.6 parts of di-iron trioxide,
0.7 part of calcium oxide,
0.9 part of magnesia,
2,2,4- trimethyl -1,2.4 parts of 2- dihyaroquinolines condensate,
2.6 parts of 2-mercaptobenzimidazole,
Vinyl three('beta '-methoxy ethyoxyl)1 part of silane,
4 parts of PE waxes;
The Mooney viscosity ML of above-mentioned copolymer(1+4)125 DEG C≤45, ethylene contents >=60% of the copolymer;
Above-mentioned polyimide modified dose of average grain diameter is 10 ~ 20 μm, and the average grain diameter of above-mentioned magnesium hydroxide is 0.8 ~ 1.5 μm,
The average grain diameter of the antimony oxide is 0.5 ~ 2.5 μm.
2nd, preparation technology
The first step:By 100 parts of ternary ethylene-propylene copolymer, 12 parts of polyimides, 48 parts of magnesium hydroxide, 32 parts of silica, three oxygen
Change 20 parts of two antimony, 5 parts of alundum (Al2O3), 10 parts of zinc oxide, 1.6 parts of di-iron trioxide, 0.7 part of calcium oxide, 0.9 part of magnesia,
2.4 parts of 2,2,4- trimethyl -1,2- dihyaroquinolines condensate, 2.6 parts of 2-mercaptobenzimidazole, vinyl three('beta '-methoxy
Ethyoxyl)1 part of silane, 4 parts of all raw materials of PE waxes are mixed by formula metering, internal mixing and plasticizing 3 minutes in banbury, and material temperature reaches
Discharge when 150 DEG C;
Second step:Then slice after triangle bag turns refining uniformly is beaten in the mill of 120 DEG C of temperature, Jing after filtering rubber machine and filter,
Be again to add be well mixed slice under 2.5 parts of cumyl peroxide in 100 DEG C of mills in temperature, packaging be Insulation Material into
Product.
3rd step:Insulation Material is connected on sulphur line production line in electric wire rubber extruding machine, to extrude at a temperature of 90 ~ 110 DEG C,
It is coated on conductor thread core, and vulcanizes in the curing tube of 170 ~ 200 DEG C of temperature, becomes the insulated electro of nuclear power station K1 class cables
Indices are detected by line according to cable standard.
3rd, technical indicator
Embodiment 2:A kind of resistance to irradiation nuclear grade cable low-smoke halogen-free flame-retardant sheath material, the fire-retardant high insulated cable material is by following
The component composition of weight portion:
100 parts of ternary ethylene-propylene copolymer,
10 parts of polyimides,
43 parts of magnesium hydroxide,
28 parts of silica,
23 parts of antimony oxide,
6 parts of alundum (Al2O3),
8 parts of zinc oxide,
3 parts of cumyl peroxide,
2.2 parts of di-iron trioxide,
0.6 part of calcium oxide,
0.8 part of magnesia,
2,2,4- trimethyl -1,2.6 parts of 2- dihyaroquinolines condensate,
2.4 parts of 2-mercaptobenzimidazole,
Vinyl three('beta '-methoxy ethyoxyl)2 parts of silane,
2 parts of stearic acid;
The Mooney viscosity ML of above-mentioned copolymer(1+4)125 DEG C≤45, ethylene contents >=60% of the copolymer;
Above-mentioned polyimide modified dose of average grain diameter is 10 ~ 20 μm, and the average grain diameter of above-mentioned magnesium hydroxide is 0.8 ~ 1.5 μm,
The average grain diameter of the antimony oxide is 0.5 ~ 2.5 μm, and above-mentioned calcinated argil average grain diameter is 1 ~ 2 μm.
2nd, preparation technology
The first step:By 100 parts of ternary ethylene-propylene copolymer, 10 parts of polyimides, 43 parts of magnesium hydroxide, 28 parts of silica, three oxygen
Change 23 parts of two antimony, 6 parts of alundum (Al2O3), 8 parts of zinc oxide, 2.2 parts of di-iron trioxide, 0.6 part of calcium oxide, 0.8 part of magnesia, 2,
2.6 parts of 2,4- trimethyl -1,2- dihyaroquinolines condensate, 2.4 parts of 2-mercaptobenzimidazole, vinyl three('beta '-methoxy second
Epoxide)2 parts of silane, all raw materials of 2 parts of stearic acid are mixed by formula metering, internal mixing and plasticizing 3 minutes in banbury, and material temperature reaches
To discharge when 150 DEG C;
Second step:Then slice after triangle bag turns refining uniformly is beaten in the mill of 120 DEG C of temperature, Jing after filtering rubber machine and filter,
Be again to add be well mixed slice under 3 parts of cumyl peroxide in 100 DEG C of mills in temperature, packaging be Insulation Material into
Product.
3rd step:Insulation Material is connected on sulphur line production line in electric wire rubber extruding machine, to extrude at a temperature of 90 ~ 110 DEG C,
It is coated on conductor thread core, and vulcanizes in the curing tube of 170 ~ 200 DEG C of temperature, becomes the insulated electro of nuclear power station K1 class cables
Indices are detected by line according to cable standard.
3rd, technical indicator
Embodiment 3:A kind of resistance to irradiation nuclear grade cable low-smoke halogen-free flame-retardant sheath material, the fire-retardant high insulated cable material is by following
The component composition of weight portion:
100 parts of ternary ethylene-propylene copolymer,
15 parts of polyimides,
40 parts of magnesium hydroxide,
25 parts of silica,
18 parts of antimony oxide,
9 parts of alundum (Al2O3),
9 parts of zinc oxide,
2.5 parts of cumyl peroxide,
3.2 parts of di-iron trioxide,
0.45 part of calcium oxide,
0.65 part of magnesia,
2,2,4- trimethyl -1,2.5 parts of 2- dihyaroquinolines condensate,
2.5 parts of 2-mercaptobenzimidazole,
Vinyl three('beta '-methoxy ethyoxyl)2.5 parts of silane,
3 parts of PE waxes;
The Mooney viscosity ML of above-mentioned copolymer(1+4)125 DEG C≤45, ethylene contents >=60% of the copolymer;
Above-mentioned polyimide modified dose of average grain diameter is 10 ~ 20 μm, and the average grain diameter of above-mentioned magnesium hydroxide is 0.8 ~ 1.5 μm,
The average grain diameter of the antimony oxide is 0.5 ~ 2.5 μm, and above-mentioned calcinated argil average grain diameter is 1 ~ 2 μm.
2nd, preparation technology
The first step:By 100 parts of ternary ethylene-propylene copolymer, 15 parts of polyimides, 40 parts of magnesium hydroxide, 25 parts of silica, three oxygen
Change 18 parts of two antimony, 9 parts of alundum (Al2O3), 9 parts of zinc oxide, 3.2 parts of di-iron trioxide, 0.45 part of calcium oxide, 0.65 part of magnesia,
2.5 parts of 2,2,4- trimethyl -1,2- dihyaroquinolines condensate, 2.5 parts of 2-mercaptobenzimidazole, vinyl three('beta '-methoxy
Ethyoxyl)2.5 parts of silane, all raw materials of 3 parts of PE waxes are mixed by formula metering, internal mixing and plasticizing 3 minutes, material temperature in banbury
Discharge when reaching 150 DEG C;
Second step:Then slice after triangle bag turns refining uniformly is beaten in the mill of 120 DEG C of temperature, Jing after filtering rubber machine and filter,
Be again to add be well mixed slice under 2.5 parts of cumyl peroxide in 100 DEG C of mills in temperature, packaging be Insulation Material into
Product.
3rd step:Insulation Material is connected on sulphur line production line in electric wire rubber extruding machine, to extrude at a temperature of 90 ~ 110 DEG C,
It is coated on conductor thread core, and vulcanizes in the curing tube of 170 ~ 200 DEG C of temperature, becomes the insulated electro of nuclear power station K1 class cables
Indices are detected by line according to cable standard.
To sum up, resistance to irradiation nuclear grade cable low-smoke halogen-free flame-retardant sheath material of the invention, improves the radiation hardness of base material itself
The combination properties such as performance, heat resistance, high flame resistance, high insulating property, can improve insulaion resistance two to Insulation Material
Side, does not reduce fire resistance, and the insulation core wire for making cables of nuclear power just disclosure satisfy that the requirement of cable using single layer structure, letter
Cable working technology is changed;Secondly, insulating properties are improve simultaneously, also improves fire resistance;Again, the tight of product is improved
Degree, excludes material micropore, improves immersion, resistance to steam performance, meets the requirement of nuclear power Insulation Material combination property.
Above-described embodiment technology design only to illustrate the invention and feature, its object is to allow person skilled in the art
Scholar will appreciate that present disclosure and implement according to this, can not be limited the scope of the invention with this.It is all according to the present invention
Equivalence changes or modification that Spirit Essence is made, all should be included within the scope of the present invention.