CN110423392A - A kind of processing technology of the harsh cable jacket material of three generations's nuclear power station - Google Patents
A kind of processing technology of the harsh cable jacket material of three generations's nuclear power station Download PDFInfo
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- 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
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Abstract
The invention discloses a kind of processing technologys of the harsh cable jacket material of three generations's nuclear power station, it is related to core field of cable technology, comprising the following steps: prepare composite flame-retardant agent, raw material preheating, ethylene-vinyl acetate copolymer and low density polyethylene (LDPE) are added in open mill and are kneaded, material a is obtained；The 27-35% of antioxidant RD, antioxidant 1024, ultraviolet absorbing agent UV-234, ultraviolet absorbing agent UV-328, stearic acid, ferrocene, boron nitride and composite flame-retardant agent total amount is added in another open mill and is kneaded, material b is obtained；Material b and paraffin oil, crosslinking sensitizer are added in material a and are kneaded, and 2 additions of remaining composite flame-retardant agent point are kneaded, obtains material c；Material c is transferred in double screw extruder and carries out mixing granulator, then is squeezed out through single screw extrusion machine, cross-linking radiation to get.Protective cover material produced by the present invention has good mechanical performance, flame retardant property, ageing-resistant and radiation resistance ability, and at 90 DEG C, service life was up to 60 years or more.
Description
Technical field
The present invention relates to core field of cable technology more particularly to a kind of harsh cable jacket material of three generations's nuclear power station plus
Work technique.
Background technique
Nuclear energy has the advantages that many other energy are incomparable, will not only cause to environment as the energy of new generation
It destroys, and nuclear fuel energy density is millions of times high compared with fossil fuel, transport and storage are quite convenient to, so building
Nuclear power station is very necessary for China and has smooth surface prospect.It is increasingly developed with today's society, our countries also face
Face the increasingly deficient circumstances of the energy fuels such as coal, petroleum, natural gas, nuclear energy is used as efficient, clean energy resource, not only in safety
Property, stability and to all having a clear superiority in the protectiveness of environment or a kind of more economic energy, it is currently
The implementation and development of China gradually, the following energy pillar that will become a new generation.
The Construction of Nuclear Electricity in China has come into high-speed development period, generation Ⅲ nuclear power, such as US Westinghouse company at present
AP1000 nuclear power unit, in three Men Jianshe in China.China also proposes the following advanced poly- disintegration energy (forth generation of core of planning simultaneously
Nuclear power unit) system development work.The either third generation or the 4th generation of technology such as nuclear energy system, the cable and its cable accessory of nuclear power
Insulating materials must all have excellent long term heat ageing performance (thermal life >=90 DEG C × 60 year), stable radiation-resistant property
The features such as with electric property, good fire-retardant and low cigarette, Halogen, low toxicity.The substrate of cables of nuclear power insulating materials is usual
It is mostly the materials such as polyethylene, cross-linked polyolefin, these traditional cable insulating materials can generate a large amount of HCl gases in accident,
Smog is formed, becomes the first cause of casualties in fire, therefore the low-smoke non-halogen flame-retardant performance of cable jacket material seems outstanding
It is important.In addition, because outermost sheath layer be LSOH anti-flaming cross-linking radiation polyolefine material, the material contain magnesium hydroxide,
The fire retardants such as aluminium hydroxide, density is relatively large, can generate larger heat because of friction in extrusion process, technology controlling and process is bad non-
Stomata is generated after being often easy to cause material to squeeze out, influences product quality.
Summary of the invention
Technical problems based on background technology, the invention proposes a kind of harsh cable jacket material of three generations's nuclear power station
Processing technology, protective cover material obtained have good mechanical performance, flame retardant property, ageing-resistant and radiation resistance ability, at 90 DEG C
In the case of service life up to 60 years or more.
A kind of processing technology of the harsh cable jacket material of three generations's nuclear power station proposed by the present invention, which is characterized in that including
Following steps:
S1, alpha zirconium phosphate is added to the water, ultrasonic disperse, then be added hydrated stannic acid zinc, zinc oxide, sodium hydroxide and
Urea, ultrasound, heating are stirred to react, and are filtered, dry by filter cake and n-butanol azeotropic distillation, are then mixed with magnesium hydroxide,
It being added in ethanol solution, ultrasound adds vinyl silicane coupling agent, is stirred to react, and filters, and it is dry, obtain composite flame-retardant agent；
S2, ethylene-vinyl acetate copolymer, low density polyethylene (LDPE), antioxidant RD, antioxidant 1024, ultraviolet radiation absorption are taken
Agent UV-234, ultraviolet absorbing agent UV-328, stearic acid, paraffin oil, ferrocene, boron nitride, composite flame-retardant agent, crosslinking sensitization
Agent, it is spare；
S3, by ethylene-vinyl acetate copolymer, low density polyethylene (LDPE), antioxidant RD, antioxidant 1024, ultraviolet radiation absorption
Agent UV-234, ultraviolet absorbing agent UV-328, stearic acid, ferrocene, boron nitride, composite flame-retardant agent are preheated；
S4, it will be kneaded in ethylene-vinyl acetate copolymer and low density polyethylene (LDPE) addition open mill, obtain material a；By antioxygen
Agent RD, antioxidant 1024, ultraviolet absorbing agent UV-234, ultraviolet absorbing agent UV-328, stearic acid, ferrocene, boron nitride with
And the 27-35% of composite flame-retardant agent total amount is added in another open mill and is kneaded, and obtains material b；By material b and paraffin oil,
Crosslinking sensitizer is added in material a and is kneaded, and 2 additions of remaining composite flame-retardant agent point are kneaded, and obtains material c；
S5, it material c is transferred in double screw extruder carries out mixing granulator, obtain pellet；
S6, pellet is squeezed out through single screw extrusion machine, using electron accelerator carry out cross-linking radiation to get.
Preferably, in S1,2-5 parts of alpha zirconium phosphate is added to the water, then hydration is added in ultrasonic disperse 20-30min
3-3.5 parts of zinc stannate, 0.8-1.3 parts of zinc oxide, 3.2-3.8 parts of sodium hydroxide and 7-8 parts of urea, ultrasound, are stirred at 70-80 DEG C
Reaction 5-6h is mixed, is filtered, it is dry by filter cake and n-butanol azeotropic distillation, it then mixes, is added to 4-7 parts of magnesium hydroxides
In 90% ethanol solution, ultrasonic disperse adds vinyl silicane coupling agent, and 3-5h is stirred to react at 40-50 DEG C, filtering,
It is dry, obtain composite flame-retardant agent.
Preferably, the vinyl silicane coupling agent is vinyltrimethoxysilane or vinyltriethoxysilane.
Preferably, ethylene-vinyl acetate copolymer, low density polyethylene (LDPE), antioxidant RD, antioxidant 1024, ultraviolet in S2
Light absorbers UV-234, ultraviolet absorbing agent UV-328, stearic acid, paraffin oil, ferrocene, boron nitride, composite flame-retardant agent, crosslinking
The weight ratio of sensitizer is 30-40:60-70:1-2:1-2:1.5-2.5:1.5-2.5:0.5-2:4-7:2-4:3-7:16-22:
2-5。
Preferably, the crosslinking sensitizer is one of iso-cyanuric acid triallyl ester or triallyl cyanurate
Or two kinds.
Preferably, in S3, ethylene-vinyl acetate copolymer and low density polyethylene (LDPE) are preheated into 2-3h at 65-75 DEG C, it will
Antioxidant RD, antioxidant 1024, ultraviolet absorbing agent UV-234, ultraviolet absorbing agent UV-328, stearic acid, ferrocene, nitridation
Boron, composite flame-retardant agent preheat 2-3h at 55-65 DEG C.
Preferably, in S4, ethylene-vinyl acetate copolymer and low density polyethylene (LDPE) is added in open mill and are kneaded 3-
6min obtains material a；By antioxidant RD, antioxidant 1024, ultraviolet absorbing agent UV-234, ultraviolet absorbing agent UV-328, tristearin
Acid, ferrocene, boron nitride and composite flame-retardant agent total amount 27-35% be added in another open mill and carry out mixing 3-6min,
Obtain material b；Material b and paraffin oil, crosslinking sensitizer are added in material a and are kneaded 2-5min, and by remaining composite flame-proof
2 additions of agent point carry out mixing 3-6min, obtain material c.
Preferably, in S6, the screw compression ratio of single screw extrusion machine is 1-1.5:1, draw ratio 20-25:1, squeezes out temperature
Degree is 110-140 DEG C.
Preferably, in S6, irradiation dose 90-140KGy.
The utility model has the advantages that the invention proposes a kind of processing technology of the harsh cable jacket material of three generations's nuclear power station, the sheath
Expect in raw material in the preparation of composite flame-retardant agent, using the basic zirconium phosphate with two-dimensional layered structure as raw material, in the condition of Ultrasonic Heating
Under, use hydrated stannic acid zinc, zinc oxide, sodium hydroxide and urea to prepare zinc hydroxyl stannate for raw material, and be inserted into stratiform
In the interlamellar spacing of basic zirconium phosphate, to modify upper zinc hydroxyl stannate on the surface of basic zirconium phosphate and interlayer, mixed with magnesium hydroxide after being blended,
After vinyl silicane coupling agent activates, in its surface grafting vinyl groups, it is big with matrix in the process to be conducive to crosslinking with radiation
Reaction is crosslinked between molecule, to improve its dispersibility in the material, the basic zirconium phosphate in the composite flame-retardant agent is in high temperature
Energy catalytic polymer is cross-linked into charcoal when burning, obstructs the transmission of fuel gas, oxygen and heat, and zinc hydroxyl stannate not only has
Excellent flame retarding and smoke suppressing properties also have good mechanical property, its dispersibility in high molecular material are improved after activated,
It significantly improves the fire-retardant and mechanical property of polyolefine material all, and further increases material with magnesium hydroxide synergistic effect
The flame retardant property of material, the addition of the composite flame-retardant agent effectively overcome the lance between polyolefine material mechanical performance and flame retardant property
Shield；Material can be made evenly dispersed using two sections of calendering process, and by antioxidant, ultraviolet absorbing agent, stearic acid, ferrocene, nitrogen
The substances such as change boron grade part composite flame-retardant agent carry out premixing and add mixing, and remaining composite flame-retardant agent point 2 times are finally added
Enter, to reduce frictional heat generation, improves the processing performance of material.Protective cover material produced by the present invention have good mechanical performance,
Flame retardant property, ageing-resistant and radiation resistance ability, high-quality, at 90 DEG C, service life was up to 60 years or more.
Specific embodiment
In the following, technical solution of the present invention is described in detail by specific embodiment.
Embodiment 1
A kind of processing technology of the harsh cable jacket material of three generations's nuclear power station proposed by the present invention, comprising the following steps:
S1,2 parts of alpha zirconium phosphate is added to the water, then 3 parts of hydrated stannic acid zinc, oxidation is added in ultrasonic disperse 20min
0.8 part of zinc, 3.2 parts of sodium hydroxide and 7 parts of urea, ultrasound, are stirred to react 5h at 70 DEG C, filter, filter cake and n-butanol are total to
Boiling distillation, it is dry, it then mixes, is added in 90% ethanol solution with 4 parts of magnesium hydroxides, ultrasonic disperse adds vinyl
Trimethoxy silane is stirred to react 3h at 40 DEG C, filters, dry, obtains composite flame-retardant agent；
S2,30 parts of ethylene-vinyl acetate copolymer, 70 parts of low density polyethylene (LDPE), 1 part of antioxidant RD, antioxidant 1024 are taken
2 parts, 1.5 parts of ultraviolet absorbing agent UV-234,2.5 parts of ultraviolet absorbing agent UV-328,0.5 part of stearic acid, 7 parts of paraffin oil,
2 parts of ferrocene, 7 parts of boron nitride, 16 parts of composite flame-retardant agent, 2 parts of crosslinking sensitizer triallyl cyanurate, it is spare；
S3, ethylene-vinyl acetate copolymer and low density polyethylene (LDPE) are preheated into 2h at 65 DEG C, by antioxidant RD, antioxygen
Agent 1024, ultraviolet absorbing agent UV-234, ultraviolet absorbing agent UV-328, stearic acid, ferrocene, boron nitride, composite flame-retardant agent
2h is preheated at 55 DEG C；
S4, it will be kneaded 3min in ethylene-vinyl acetate copolymer and low density polyethylene (LDPE) addition open mill, obtains material a；It will
Antioxidant RD, antioxidant 1024, ultraviolet absorbing agent UV-234, ultraviolet absorbing agent UV-328, stearic acid, ferrocene, nitridation
The 27% of boron and composite flame-retardant agent total amount, which is added in another open mill, carries out mixing 3min, obtains material b；By material b and stone
Wax oil, crosslinking sensitizer, which are added in material a, is kneaded 2min, and 2 additions of remaining composite flame-retardant agent point are kneaded
3min obtains material c；
S5, it material c is transferred in double screw extruder carries out mixing granulator, obtain pellet；
S6, pellet is squeezed out through single screw extrusion machine, the screw compression ratio of single screw extrusion machine is 1:1, draw ratio 20:
1, extrusion temperature be 110-130 DEG C, then using electron accelerator carry out cross-linking radiation, irradiation dose be 90KGy to get.
Embodiment 2
A kind of processing technology of the harsh cable jacket material of three generations's nuclear power station proposed by the present invention, comprising the following steps:
S1,5 parts of alpha zirconium phosphate is added to the water, then 3.5 parts of hydrated stannic acid zinc, oxygen is added in ultrasonic disperse 30min
1.3 parts of zinc of change, 3.8 parts of sodium hydroxide and 8 parts of urea, ultrasound are stirred to react 6h at 80 DEG C, filter, by filter cake and n-butanol
Azeotropic distillation, it is dry, it then mixes, is added in 90% ethanol solution with 7 parts of magnesium hydroxides, ultrasonic disperse adds ethylene
Ethyl triethoxy silicane alkane is stirred to react 5h at 50 DEG C, filters, dry, obtains composite flame-retardant agent；
S2,40 parts of ethylene-vinyl acetate copolymer, 60 parts of low density polyethylene (LDPE), 2 parts of antioxidant RD, antioxidant 1024 are taken
1 part, 2.5 parts of ultraviolet absorbing agent UV-234,1.5 parts of ultraviolet absorbing agent UV-328,2 parts of stearic acid, 4 parts of paraffin oil, two
4 parts of luxuriant iron, 3 parts of boron nitride, 22 parts of composite flame-retardant agent, 5 parts of crosslinking sensitizer iso-cyanuric acid triallyl ester, it is spare；
S3, ethylene-vinyl acetate copolymer and low density polyethylene (LDPE) are preheated into 3h at 75 DEG C, by antioxidant RD, antioxygen
Agent 1024, ultraviolet absorbing agent UV-234, ultraviolet absorbing agent UV-328, stearic acid, ferrocene, boron nitride, composite flame-retardant agent
3h is preheated at 65 DEG C；
S4, it will be kneaded 6min in ethylene-vinyl acetate copolymer and low density polyethylene (LDPE) addition open mill, obtains material a；It will
Antioxidant RD, antioxidant 1024, ultraviolet absorbing agent UV-234, ultraviolet absorbing agent UV-328, stearic acid, ferrocene, nitridation
The 35% of boron and composite flame-retardant agent total amount, which is added in another open mill, carries out mixing 6min, obtains material b；By material b and stone
Wax oil, crosslinking sensitizer, which are added in material a, is kneaded 5min, and 2 additions of remaining composite flame-retardant agent point are kneaded
6min obtains material c；
S5, it material c is transferred in double screw extruder carries out mixing granulator, obtain pellet；
S6, pellet is squeezed out through single screw extrusion machine, the screw compression ratio of single screw extrusion machine is 1.5:1, and draw ratio is
25:1, extrusion temperature be 120-140 DEG C, then using electron accelerator carry out cross-linking radiation, irradiation dose 140KGy, i.e.,
.
Embodiment 3
A kind of processing technology of the harsh cable jacket material of three generations's nuclear power station proposed by the present invention, which is characterized in that including
Following steps:
S1,3 parts of alpha zirconium phosphate is added to the water, then 3.2 parts of hydrated stannic acid zinc, oxygen is added in ultrasonic disperse 25min
1 part of zinc of change, 3.5 parts of sodium hydroxide and 7.4 parts of urea, ultrasound are stirred to react 5h at 75 DEG C, filter, by filter cake and n-butanol
Azeotropic distillation, it is dry, it then mixes, is added in 90% ethanol solution with 5.4 parts of magnesium hydroxides, ultrasonic disperse adds second
Alkenyl trimethoxy silane is stirred to react 3.5h at 40 DEG C, filters, dry, obtains composite flame-retardant agent；
S2,35 parts of ethylene-vinyl acetate copolymer, 65 parts of low density polyethylene (LDPE), 1.5 parts of antioxidant RD, antioxidant are taken
1024 1.5 parts, 2 parts of ultraviolet absorbing agent UV-234,2 parts of ultraviolet absorbing agent UV-328,1 part of stearic acid, 6 parts of paraffin oil,
3 parts of ferrocene, 6 parts of boron nitride, 18 parts of composite flame-retardant agent, 3 parts of crosslinking sensitizer iso-cyanuric acid triallyl ester, it is spare；
S3, ethylene-vinyl acetate copolymer and low density polyethylene (LDPE) are preheated into 2.5h at 65 DEG C, by antioxidant RD, resisted
Oxygen agent 1024, ultraviolet absorbing agent UV-234, ultraviolet absorbing agent UV-328, stearic acid, ferrocene, boron nitride, composite flame-proof
Agent preheats 3h at 65 DEG C；
S4, it will be kneaded 4min in ethylene-vinyl acetate copolymer and low density polyethylene (LDPE) addition open mill, obtains material a；It will
Antioxidant RD, antioxidant 1024, ultraviolet absorbing agent UV-234, ultraviolet absorbing agent UV-328, stearic acid, ferrocene, nitridation
The 30% of boron and composite flame-retardant agent total amount, which is added in another open mill, carries out mixing 4min, obtains material b；By material b and stone
Wax oil, crosslinking sensitizer, which are added in material a, is kneaded 4min, and 2 additions of remaining composite flame-retardant agent point are kneaded
4min obtains material c；
S5, it material c is transferred in double screw extruder carries out mixing granulator, obtain pellet；
S6, pellet is squeezed out through single screw extrusion machine, the screw compression ratio of single screw extrusion machine is 1.3:1, and draw ratio is
22:1, extrusion temperature be 115-135 DEG C, then using electron accelerator carry out cross-linking radiation, irradiation dose 110KGy, i.e.,
.
Embodiment 4
A kind of processing technology of the harsh cable jacket material of three generations's nuclear power station proposed by the present invention, which is characterized in that including
Following steps:
S1,4 parts of alpha zirconium phosphate is added to the water, then 3.3 parts of hydrated stannic acid zinc, oxygen is added in ultrasonic disperse 30min
1.2 parts of zinc of change, 3.6 parts of sodium hydroxide and 7.6 parts of urea, ultrasound are stirred to react 5.5h at 75 DEG C, filter, by filter cake and just
Butanol azeotropic distillation, it is dry, it then mixes, is added in 90% ethanol solution, ultrasonic disperse with 6.2 parts of magnesium hydroxides, then plus
Enter vinyltrimethoxysilane, 4h is stirred to react at 45 DEG C, filters, it is dry, obtain composite flame-retardant agent；
S2,38 parts of ethylene-vinyl acetate copolymer, 62 parts of low density polyethylene (LDPE), 1.8 parts of antioxidant RD, antioxidant are taken
1024 1.2 parts, 2.2 parts of ultraviolet absorbing agent UV-234,1.8 parts of ultraviolet absorbing agent UV-328,1.5 parts of stearic acid, paraffin
Oily 5.5 parts, 3.5 parts of ferrocene, 5 parts of boron nitride, 20 parts of composite flame-retardant agent, crosslinking sensitizer iso-cyanuric acid triallyl ester 4
Part, it is spare；
S3, ethylene-vinyl acetate copolymer and low density polyethylene (LDPE) are preheated into 3h at 70 DEG C, by antioxidant RD, antioxygen
Agent 1024, ultraviolet absorbing agent UV-234, ultraviolet absorbing agent UV-328, stearic acid, ferrocene, boron nitride, composite flame-retardant agent
3h is preheated at 60 DEG C；
S4, it will be kneaded 5min in ethylene-vinyl acetate copolymer and low density polyethylene (LDPE) addition open mill, obtains material a；It will
Antioxidant RD, antioxidant 1024, ultraviolet absorbing agent UV-234, ultraviolet absorbing agent UV-328, stearic acid, ferrocene, nitridation
The 32% of boron and composite flame-retardant agent total amount, which is added in another open mill, carries out mixing 5min, obtains material b；By material b and stone
Wax oil, crosslinking sensitizer, which are added in material a, is kneaded 3min, and 2 additions of remaining composite flame-retardant agent point are kneaded
5min obtains material c；
S5, it material c is transferred in double screw extruder carries out mixing granulator, obtain pellet；
S6, pellet is squeezed out through single screw extrusion machine, the screw compression ratio of single screw extrusion machine is 1.4:1, and draw ratio is
23:1, extrusion temperature be 120-140 DEG C, then using electron accelerator carry out cross-linking radiation, irradiation dose 120KGy, i.e.,
.
The performance of the cable jacket material of 1-4 of embodiment of the present invention preparation is tested, testing result is shown in Table 1.
The performance number of the cable jacket material of 1 embodiment 1-4 of table preparation
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (9)
1. a kind of processing technology of the harsh cable jacket material of three generations's nuclear power station, which comprises the following steps:
S1, alpha zirconium phosphate is added to the water, then hydrated stannic acid zinc, zinc oxide, sodium hydroxide and urine is added in ultrasonic disperse
Element, ultrasound, heating are stirred to react, and are filtered, dry by filter cake and n-butanol azeotropic distillation, are then mixed, are added with magnesium hydroxide
Entering in ethanol solution, ultrasound adds vinyl silicane coupling agent, is stirred to react, and filters, and it is dry, obtain composite flame-retardant agent；
S2, ethylene-vinyl acetate copolymer, low density polyethylene (LDPE), antioxidant RD, antioxidant 1024, ultraviolet absorbing agent UV- are taken
234, ultraviolet absorbing agent UV-328, stearic acid, paraffin oil, ferrocene, boron nitride, composite flame-retardant agent, crosslinking sensitizer, it is standby
With；
S3, by ethylene-vinyl acetate copolymer, low density polyethylene (LDPE), antioxidant RD, antioxidant 1024, ultraviolet absorbing agent UV-
234, ultraviolet absorbing agent UV-328, stearic acid, ferrocene, boron nitride, composite flame-retardant agent are preheated；
S4, it will be kneaded in ethylene-vinyl acetate copolymer and low density polyethylene (LDPE) addition open mill, obtain material a；By antioxidant
RD, antioxidant 1024, ultraviolet absorbing agent UV-234, ultraviolet absorbing agent UV-328, stearic acid, ferrocene, boron nitride and
The 27-35% of composite flame-retardant agent total amount is added in another open mill and is kneaded, and obtains material b；By material b and paraffin oil, friendship
Connection sensitizer, which is added in material a, to be kneaded, and 2 additions of remaining composite flame-retardant agent point are kneaded, and obtains material c；
S5, it material c is transferred in double screw extruder carries out mixing granulator, obtain pellet；
S6, pellet is squeezed out through single screw extrusion machine, using electron accelerator carry out cross-linking radiation to get.
2. the processing technology of the harsh cable jacket material of three generations's nuclear power station according to claim 1, which is characterized in that S1
In, 2-5 parts of alpha zirconium phosphate is added to the water, then 3-3.5 parts of hydrated stannic acid zinc, oxygen is added in ultrasonic disperse 20-30min
Zinc 0.8-1.3 parts of change, 3.2-3.8 parts of sodium hydroxide and 7-8 parts of urea, ultrasound, are stirred to react 5-6h at 70-80 DEG C, filter,
It is dry by filter cake and n-butanol azeotropic distillation, it then mixes, is added in 90% ethanol solution with 4-7 parts of magnesium hydroxides, ultrasound
Dispersion, adds vinyl silicane coupling agent, 3-5h is stirred to react at 40-50 DEG C, filters, dry, obtains composite flame-retardant agent.
3. the processing technology of the harsh cable jacket material of three generations's nuclear power station according to claim 1 or 2, which is characterized in that
The vinyl silicane coupling agent is vinyltrimethoxysilane or vinyltriethoxysilane.
4. the processing technology of the harsh cable jacket material of three generations's nuclear power station according to claim 1-3, feature
It is, in S2, ethylene-vinyl acetate copolymer, low density polyethylene (LDPE), antioxidant RD, antioxidant 1024, ultraviolet absorbing agent
UV-234, ultraviolet absorbing agent UV-328, stearic acid, paraffin oil, ferrocene, boron nitride, composite flame-retardant agent, crosslinking sensitizer
Weight ratio is 30-40:60-70:1-2:1-2:1.5-2.5:1.5-2.5:0.5-2:4-7:2-4:3-7:16-22:2-5.
5. the processing technology of the harsh cable jacket material of three generations's nuclear power station according to claim 1-4, feature
It is, the crosslinking sensitizer is one or both of iso-cyanuric acid triallyl ester or triallyl cyanurate.
6. the processing technology of the harsh cable jacket material of three generations's nuclear power station according to claim 1-5, feature
Be, in S3, ethylene-vinyl acetate copolymer and low density polyethylene (LDPE) preheated into 2-3h at 65-75 DEG C, by antioxidant RD,
Antioxidant 1024, ultraviolet absorbing agent UV-234, ultraviolet absorbing agent UV-328, stearic acid, ferrocene, boron nitride, compound resistance
Combustion agent preheats 2-3h at 55-65 DEG C.
7. the processing technology of the harsh cable jacket material of three generations's nuclear power station according to claim 1-6, feature
It is, in S4, ethylene-vinyl acetate copolymer and low density polyethylene (LDPE) is added in open mill and are kneaded 3-6min, obtains material a；
By antioxidant RD, antioxidant 1024, ultraviolet absorbing agent UV-234, ultraviolet absorbing agent UV-328, stearic acid, ferrocene, nitrogen
Change boron and the 27-35% of composite flame-retardant agent total amount are added in another open mill and carry out mixing 3-6min, obtain material b；By object
Material b and paraffin oil, crosslinking sensitizer are added in material a and are kneaded 2-5min, and will be added for remaining composite flame-retardant agent points 2 times into
Row is kneaded 3-6min, obtains material c.
8. the processing technology of the harsh cable jacket material of three generations's nuclear power station according to claim 1-7, feature
It is, in S6, the screw compression ratio of single screw extrusion machine is 1-1.5:1, draw ratio 20-25:1, extrusion temperature 110-140
℃。
9. the processing technology of the harsh cable jacket material of three generations's nuclear power station according to claim 1-8, feature
It is, in S6, irradiation dose 90-140KGy.
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