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Halogen-free flame-retardant heat-shrinkage material for nuclear island, halogen-free flame-retardant heat-shrinkage pipe for nuclear island and preparation method of halogen-free flame-retardant heat-shrinkage material

A heat-shrinkable, inorganic flame retardant technology, applied in the field of heat-shrinkable materials in nuclear islands, can solve problems such as unsatisfactory halogen-free flame retardant performance, unsatisfactory heat aging and radiation resistance performance, and achieve the effect of inhibiting damage and good Flame retardant performance, effect of reducing chain breakage

Inactive Publication Date: 2019-04-09
青岛中科汉缆高分子材料有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to overcome the defects of the heat aging and radiation resistance of the existing heat shrinkable materials that cannot meet the requirements of all third-generation nuclear power heat shrinkable tubes, and the halogen-free flame-retardant performance is not ideal, and provide halogen-free flame-retardant materials for nuclear islands. Heat-shrinkable material and its preparation method, heat-shrinkable tube and its preparation method, the heat-shrinkable material has super long life (90°C, ≥70 years), high radiation resistance (γ-ray, ≥2400kGy), good electrical properties (≥ 10 14 Ω·cm), excellent flame retardant properties (heat shrink tube flame retardant passed UL224 vertical combustion), and low smoke, halogen-free, low toxicity

Method used

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  • Halogen-free flame-retardant heat-shrinkage material for nuclear island, halogen-free flame-retardant heat-shrinkage pipe for nuclear island and preparation method of halogen-free flame-retardant heat-shrinkage material
  • Halogen-free flame-retardant heat-shrinkage material for nuclear island, halogen-free flame-retardant heat-shrinkage pipe for nuclear island and preparation method of halogen-free flame-retardant heat-shrinkage material
  • Halogen-free flame-retardant heat-shrinkage material for nuclear island, halogen-free flame-retardant heat-shrinkage pipe for nuclear island and preparation method of halogen-free flame-retardant heat-shrinkage material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035]

[0036]

[0037] The polymer EVA-g-MAH, EVA (VA = 18%), EVA (VA = 28%), POE, EMMA (MA = 18%), EMMA (MA = 18%) and antioxidant RD, antioxidant 1010, antioxidant DLTP, ultraviolet UV328, zinc stearate, smoke agent ammonium octamolybdate, boron carbide, magnesium hydroxide, aluminum hypophosphite, hexaphenoxy cyclotriphosphazene, phenoxy polyphosphazene and environmental protection Put the type black masterbatch into a 75-liter internal mixer, mix it at about 130°C for 5 minutes after melting, then add the cross-linking sensitizer TMPTMA, anti-radiation agent A high phenyl silicone rubber (40% phenyl content) And phenylene silicone rubber (60% phenylene content), kneading in the temperature range of 130-150 ° C for 5-10 minutes, and then promoted to the double-stage twin-screw extruder, air cooling in the temperature range of 120-150 ° C Extrude and granulate.

Embodiment 2

[0039]

[0040]

[0041] The polymer EVA-g-MAH, EVA (VA = 18%), EVA (VA = 28%), POE, EMMA (MA = 18%), EMMA (MA = 18%) and antioxidant RD, antioxidant 1010, antioxidant DLTP, ultraviolet UV328, zinc stearate, smoke agent ammonium octamolybdate, boron carbide, magnesium hydroxide, aluminum hypophosphite, hexaphenoxy cyclotriphosphazene, phenoxy polyphosphazene and environmental protection Put the type black masterbatch into a 75-liter internal mixer, mix it at about 130°C for 5 minutes after melting, then add the cross-linking sensitizer TMPTMA, anti-radiation agent A high phenyl silicone rubber (40% phenyl content) And phenylene silicone rubber (60% phenylene content), kneading in the temperature range of 130-150 ° C for 5-10 minutes, and then promoted to the double-stage twin-screw extruder, air cooling in the temperature range of 120-150 ° C Extrude and granulate;

Embodiment 3

[0043]

[0044]

[0045] The polymer EVA-g-MAH, EVA (VA = 18%), EVA (VA = 28%), POE, EMMA (MA = 18%), EMMA (MA = 18%) and antioxidant RD, antioxidant 1010, antioxidant DLTP, ultraviolet UV328, zinc stearate, smoke agent ammonium octamolybdate, boron carbide, magnesium hydroxide, aluminum hypophosphite, hexaphenoxy cyclotriphosphazene, phenoxy polyphosphazene and environmental protection Put the type black masterbatch into a 75-liter internal mixer, mix it at about 130°C for 5 minutes after melting, then add the cross-linking sensitizer TMPTMA, anti-radiation agent A high phenyl silicone rubber (40% phenyl content) And phenylene silicone rubber (60% phenylene content), kneading in the temperature range of 130-150 ° C for 5-10 minutes, and then promoted to the double-stage twin-screw extruder, air cooling in the temperature range of 120-150 ° C Extrude and granulate;

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PUM

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Abstract

The invention relates to a halogen-free flame-retardant heat-shrinkage material for a nuclear island, a halogen-free flame-retardant heat-shrinkage pipe for the nuclear island and a preparation methodof the halogen-free flame-retardant heat-shrinkage material, belonging to the technical field of heat-shrinkage materials for the nuclear island. The halogen-free flame-retardant heat-shrinkage material contains the following raw materials in parts by weight: a polymer base material, an inorganic flame retardant, a polyphosphazene flame retardant, a phosphorus-nitrogen flame retardant, ammonium octamolybdate, a 2,2,4-trimethyl-1,2-dihydroquinoline polymer, a compound antioxidant, an anti-radiation agent and a processing aid. The prepared ultra-long-life and high-radiation-resistance halogen-free flame-retardant heat-shrinkage material for the nuclear island has stable radiation resistance and good flame retardance and is low in smoke, halogen-free and low in toxicity. By adding an organic / inorganic anti-radiation agent into the polymer base material of the heat-shrinkage material, so that the damage effect of a gamma ray in a nuclear environment is effectively restrained, the breakageof C-C bonds among molecules of the polymer material caused due to the stimulation is reduced, and the service life of the material in the nuclear environment is prolonged.

Description

technical field [0001] The invention relates to a halogen-free flame-retardant heat-shrinkable material in a nuclear island, a halogen-free flame-retardant heat-shrinkable tube in a nuclear island and a preparation method thereof, and belongs to the technical field of heat-shrinkable materials in a nuclear island. Background technique [0002] Nuclear power is a safe, clean and economical energy source. The third-generation nuclear power reactors such as AP1000, CAP1400, and Hualong No. 1 have a long-term service life of 40 years at 90°C for the second-generation nuclear power reactors, and the long-term service life at 90°C is 60 years. The working environment of nuclear 1E-grade cables and heat-shrinkable tubes used in nuclear power plants (especially K1 cables and K1 heat-shrinkable tubes in nuclear islands) is very harsh. During the entire service life, cables and heat-shrinkable tubes must withstand the electric field under nuclear environmental conditions, It is the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L51/06C08L85/02C08L83/04C08K3/22C08K3/32C08K5/5399C08K3/38C08K5/3475C08K5/134C08K5/372
CPCC08K2003/2224C08L23/0869C08L2201/02C08L2201/08C08L2201/22C08L2203/18C08L2205/025C08L2205/035C08L23/0853C08L23/0815C08L51/06C08L85/02C08L83/04C08K3/22C08K3/32C08K5/5399C08K3/38C08K5/3475C08K5/1345C08K5/372
Inventor 张聪王长春胡敦胜蒋海青李景烨李林繁李吉豪
Owner 青岛中科汉缆高分子材料有限公司
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