Grade-1E K2-type radiation cross-linked halogen-free flame-retardant cable material for nuclear power plant and preparation method thereof

Abstract

The invention relates to a grade-1E K2-type radiation cross-linked halogen-free flame-retardant cable material for a nuclear power plant and a preparation method thereof, belonging to the field of new chemical materials. The cable material comprises raw materials including base resin EVA (ethylene-vinyl acetate copolymer), flame retardants A and B, a flame retardant synergist, basic antioxidants 1010 and 168, a radiation-resistant auxiliary agent 4,4'-thiobis(6-tertiary-butyl-3-methylphenol) and a processing agent; and the preparation method comprises the process steps of material weighing, pretreatment, mixing, extrusion granulation, drying and the like. The cable material is a red-phosphorus-free halogen-free environment-friendly flame-retardant material, phenoxy polyphosphazene is used as a main flame retardant in a flame-retardant system of the cable material, an inorganic flame retardant is auxiliary, the flame-retardant system accounts for a small weight percentage of the material, and the cable material is high in flame-retardant efficiency and excellent in mechanical properties, processability and radiation resistance, so that the cable material is a novel environment-friendly flame-retardant material which has excellent comprehensive properties and is suitable for a nuclear power plant environment.

Description

technical field

[0001] The invention relates to an irradiation cross-linkable halogen-free flame-retardant cable material and a preparation method thereof, in particular to a 1E-class K2-type irradiation cross-linkable halogen-free flame-retardant cable material for nuclear power plants and a preparation method thereof, belonging to The field of new chemical materials. Background technique

[0002] The use of nuclear power to generate electricity has become an important way for countries around the world to solve energy problems. There are already 17 countries whose nuclear power generation accounts for more than 25% of the total power generation. In the United States, there are more than 100 nuclear power units in operation, the largest in the world, with an installed capacity of 97.41 million kilowatts. In 2000, nuclear power generation was 753.9 billion kWh, accounting for 19.83% of the total power generation in the United States. At present, there are 8 operating units i...

Examples

Embodiment 1

[0044] Raw material weight (kg)

[0045] EVA 100

[0046] Phenoxypolyphosphazene 10

[0047] Mg(OH) 2 25

[0048] Al(OH) 3 25

[0049] ZEO 2

[0050] MMT 2

[0051] Antioxidant 1010 0.25

[0052] Antioxidant 168 0.25

[0053] Antioxidant 300 3

[0054] Liquid paraffin 0.5

[0055] EBS 1

[0056] M-305 0.5

[0057] After weighing the raw materials accurately according to the above proportions, first put the EVA into the high-speed mixer, then add processing aids (liquid paraffin, EBS, M-305), stir at 100-200 rpm for 2-3 minutes, and then add Flame retardant A (phenoxy polyphosphazene), flame retardant B (Mg(OH) 2 , Al(OH) 3 ), flame retardant synergists (ZEO, MMT), basic antioxidants (antioxidant 168, antioxidant 1010), anti-radiation additives (antioxidant 300), high-speed stirring at 300-500 rpm for 3-5 Minutes until the raw materials are uniformly mixed and discharged, the mixed raw materials are dried...

Embodiment 2

[0061] Raw material weight (kg)

[0062] EVA 100

[0063] Phenoxypolyphosphazene 12

[0064] Mg(OH) 2 10

[0065] Al(OH) 3 30

[0066] ZEO 1

[0067] MMT 1

[0068] Antioxidant 1010 1

[0069] Antioxidant 168 1

[0070] Antioxidant 300 2.5

[0071] liquid paraffin 1

[0072] EBS 4

[0073] Calcium Stearate 2

[0074] M-305 1

[0075] After weighing the raw materials accurately according to the above proportions, first put the EVA into the high-speed mixer, then add processing aids (liquid paraffin, EBS, calcium stearate, M-305), and stir at 100-200 rpm for 2- 3 minutes, then add flame retardant A (phenoxy polyphosphazene), flame retardant B (Mg(OH) 2 , Al(OH) 3 ), flame retardant synergists (ZEO, MMT), basic antioxidants (antioxidant 1010, antioxidant 168), anti-radiation additives (antioxidant 300), high-speed stirring at 300-500 rpm for 3-5 Minutes until the raw materials are uniformly mixed and discharged, t...

Embodiment 3

[0079] Raw material weight (kg)

[0080] EVA 100

[0081] Phenoxypolyphosphazene 15

[0082] Mg(OH) 2 10

[0083] Al(OH) 3 25

[0084] ZEO 2.5

[0085] MMT 2.5

[0086] Antioxidant 1010 0.5

[0087] Antioxidant 168 0.5

[0088] Antioxidant 300 2

[0089] liquid paraffin 3

[0090] Calcium stearate 1.5

[0091] M-305 0.5

[0092] After weighing the raw materials accurately according to the above proportions, first put the EVA into the high-speed mixer, then add processing aids (liquid paraffin, EBS, calcium stearate, M-305), and stir at 100-200 rpm for 2- 3 minutes, then add flame retardant A (phenoxy polyphosphazene), flame retardant B (Mg(OH) 2 , Al(OH) 3 ), flame retardant synergists (ZEO, MMT), basic antioxidants (antioxidant 1010, antioxidant 168), anti-radiation additives (antioxidant 300), high-speed stirring at 300-500 rpm for 3-5 Minutes until the raw materials are mixed evenly and discharged, the mixed ...

technical field

[0001] The invention relates to an irradiation cross-linkable halogen-free flame-retardant cable material and a preparation method thereof, in particular to a 1E-class K2-type irradiation cross-linkable halogen-free flame-retardant cable material for nuclear power plants and a preparation method thereof, belonging to The field of new chemical materials. Background technique

[0002] The use of nuclear power to generate electricity has become an important way for countries around the world to solve energy problems. There are already 17 countries whose nuclear power generation accounts for more than 25% of the total power generation. In the United States, there are more than 100 nuclear power units in operation, the largest in the world, with an installed capacity of 97.41 million kilowatts. In 2000, nuclear power generation was 753.9 billion kWh, accounting for 19.83% of the total power generation in the United States. At present, there are 8 operating units i...

Examples

Embodiment 1

[0044] Raw material weight (kg)

[0045] EVA 100

[0046] Phenoxypolyphosphazene 10

[0047] Mg(OH) 2 25

[0048] Al(OH) 3 25

[0049] ZEO 2

[0050] MMT 2

[0051] Antioxidant 1010 0.25

[0052] Antioxidant 168 0.25

[0053] Antioxidant 300 3

[0054] Liquid paraffin 0.5

[0055] EBS 1

[0056] M-305 0.5

[0057] After weighing the raw materials accurately according to the above proportions, first put the EVA into the high-speed mixer, then add processing aids (liquid paraffin, EBS, M-305), stir at 100-200 rpm for 2-3 minutes, and then add Flame retardant A (phenoxy polyphosphazene), flame retardant B (Mg(OH) 2 , Al(OH) 3 ), flame retardant synergists (ZEO, MMT), basic antioxidants (antioxidant 168, antioxidant 1010), anti-radiation additives (antioxidant 300), high-speed stirring at 300-500 rpm for 3-5 Minutes until the raw materials are uniformly mixed and discharged, the mixed raw materials are dried...

Embodiment 2

[0061] Raw material weight (kg)

[0062] EVA 100

[0063] Phenoxypolyphosphazene 12

[0064] Mg(OH) 2 10

[0065] Al(OH) 3 30

[0066] ZEO 1

[0067] MMT 1

[0068] Antioxidant 1010 1

[0069] Antioxidant 168 1

[0070] Antioxidant 300 2.5

[0071] liquid paraffin 1

[0072] EBS 4

[0073] Calcium Stearate 2

[0074] M-305 1

[0075] After weighing the raw materials accurately according to the above proportions, first put the EVA into the high-speed mixer, then add processing aids (liquid paraffin, EBS, calcium stearate, M-305), and stir at 100-200 rpm for 2- 3 minutes, then add flame retardant A (phenoxy polyphosphazene), flame retardant B (Mg(OH) 2 , Al(OH) 3 ), flame retardant synergists (ZEO, MMT), basic antioxidants (antioxidant 1010, antioxidant 168), anti-radiation additives (antioxidant 300), high-speed stirring at 300-500 rpm for 3-5 Minutes until the raw materials are uniformly mixed and discharged, t...

Embodiment 3

[0079] Raw material weight (kg)

[0080] EVA 100

[0081] Phenoxypolyphosphazene 15

[0082] Mg(OH) 2 10

[0083] Al(OH) 3 25

[0084] ZEO 2.5

[0085] MMT 2.5

[0086] Antioxidant 1010 0.5

[0087] Antioxidant 168 0.5

[0088] Antioxidant 300 2

[0089] liquid paraffin 3

[0090] Calcium stearate 1.5

[0091] M-305 0.5

[0092] After weighing the raw materials accurately according to the above proportions, first put the EVA into the high-speed mixer, then add processing aids (liquid paraffin, EBS, calcium stearate, M-305), and stir at 100-200 rpm for 2- 3 minutes, then add flame retardant A (phenoxy polyphosphazene), flame retardant B (Mg(OH) 2 , Al(OH) 3 ), flame retardant synergists (ZEO, MMT), basic antioxidants (antioxidant 1010, antioxidant 168), anti-radiation additives (antioxidant 300), high-speed stirring at 300-500 rpm for 3-5 Minutes until the raw materials are mixed evenly and discharged, the mixed ...

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