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Low-smoke halogen-free combustion-preventing cable insulation and jacket material for nuclear power plant

A technology for flame retardant cables and nuclear power plants, which can be used in insulated conductors, insulated cables, organic insulators, etc., and can solve the problems of low flame retardant efficiency of flame retardants, deterioration of mechanical properties and process extrusion performance, etc.

Inactive Publication Date: 2007-07-11
金友友
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low flame retardant efficiency of the flame retardant, in order to ensure the flame retardancy of the material, a large amount of flame retardant is added, which greatly deteriorates the mechanical properties and process extrusion performance of the material

Method used

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  • Low-smoke halogen-free combustion-preventing cable insulation and jacket material for nuclear power plant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Step 1. Ingredients and high-speed mixing

[0038] Get ethylene-vinyl acetate copolymer 70kg, maleic anhydride grafted polyethylene 30kg, aluminum hydroxide 90kg, tetrakis-(3,5-di-tert-butyl-4-hydroxyphenylpropionic acid) pentaerythritol ester 3kg, phosphorous acid- Dioctyl benzene 1kg, tris (2,4-di-tert-butylphenyl) phosphite 2kg, triallyl isocyanurate 2kg, magnesium stearate, zinc stearate or calcium stearate 2kg, di 1kg of methyl silicone oil and appropriate amount of pigment are placed in a high-speed mixer and mixed at a high speed to prepare a mixture.

[0039] Step 2. Extrusion, plasticization and granulation

[0040] Put the mixture obtained in step 1 into co-rotating twin-screw extruders for plasticizing and granulating.

[0041] Step 3. Extrude the pellets obtained in Step 2 together with other materials to form a cable.

[0042] Step 4, subjecting the cables obtained in Step 3 to cross-linking by electron ray irradiation to obtain Class 1E K1 cables for nu...

Embodiment 2

[0043] Embodiment 2: the difference between this embodiment and embodiment 1 is only the ingredients of step one, and all the other are the same as embodiment 1.

[0044] Step 1. Ingredients and high-speed mixing

[0045] Get silicone resin 90kg, maleic anhydride grafted ethylene-vinyl acetate copolymer 10kg, magnesium hydroxide 150kg, 1,3,5 trimethyl-2,4,6-three (3,5-di-tert-butyl-4 -Hydroxybenzyl)benzene 0.3kg, phosphite-benzenedioctyl 2kg, tris(2,4-di-tert-butylphenyl)phosphite 3kg, 1,1,1-trimethylol propene trimethyl 3kg of acrylate, silicone resin, phenylene silica gel or phenolic resin, 1kg of magnesium stearate, 2kg of hydroxyl silicone oil and appropriate amount of pigment are placed in a high-speed mixer and mixed at high speed to prepare a mixture.

Embodiment 3

[0046] Embodiment 3: the difference between this embodiment and embodiment 1 only lies in the batching of step 1, and all the other are the same as embodiment 1.

[0047] Step 1. Ingredients and high-speed mixing

[0048]Get 80kg of silicone resin, 20kg of amide grafted ethylene-vinyl acetate copolymer, 120kg of hydrated silica, 1kg of 4,4'thiobis(6-tert-butyl-3-methylphenol), phosphorous acid-benzenedioctyl Ester 1.5, Tris(2,4-di-tert-butylphenyl)phosphite 1.5kg, 1,1,1-Trimethylolpropene trimethacrylate 2.5kg, Zinc stearate 1.5kg, Hydroxy silicone oil 1.5kg and an appropriate amount of pigment are placed in a high-speed mixer and mixed at a high speed to prepare a mixture.

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Abstract

This invention relates to one nuclear power station with low smoke without chimney cable insulation protection materials, which uses ethene-vinyl acetate polymer or silicon resin as base resin interfacing polyolefin, wherein, it uses aluminum hydroxide, magnesium hydrate, earth silicon or silicon resin as combustion inhibitor with aid of antiager, photographic sensitizer and process aid agent; the sensitizer is for cyanoacrylate, 1,1,1-trimethylolpropane methyl methacrylate, organic silicon resin, phenylene silica gel or formaldehyde-phenol resin; The aid process agent is for aliphatic acid salt and organic silicon.

Description

technical field [0001] The invention relates to an 1E class K1 cable for a nuclear power plant. In particular, it relates to a low-smoke halogen-free flame-retardant cable insulation and sheath material for nuclear power plants. It belongs to the field of cable technology. Background technique [0002] As a kind of clean energy with mature technology and large-scale utilization, nuclear power has become the consensus of more and more countries, especially in today's high oil price and less and less available resources, especially the urgency and importance of developing nuclear power . The construction of nuclear power plants is inseparable from the supporting wires and cables, especially 1E-class K1 cables. [0003] Since K1 cables are used in the containment of nuclear power plants, they may be affected by harsh environmental factors such as high temperature, high-pressure water vapor, chemical agents, and high-dose γ-ray radiation. It should still be able to maintain ...

Claims

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Application Information

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IPC IPC(8): H01B3/18H01B3/44C08L23/16H01B7/295C09K21/00
Inventor 金友友
Owner 金友友
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