1E-grade K1 type halogen-free flame retardant material for nuclear power plants and application thereof

Abstract

The invention discloses a 1E-grade K1 type halogen-free flame retardant material for nuclear power plants. The material comprises the following substances: 100 parts of vinyl polymers, 1-20 parts by weight of polymer compatilizer, 0.5-10 parts by weight of organosilicon polymers, 1-10 parts by weight of complex antioxidant, 0.1-10 parts by weight of light stabilizer and 0.1-100 parts by weight of high molecular weight ammonium polyphosphate and / or 0.1-50 parts by weight of phosphate flame retardants and / or 0.1-50 parts by weight of melamine cyanurate and / or 0.1-50 parts by weight of melamine pyrophosphate, wherein the complex antioxidant is a complexing agent formed by blending hindered phenol main antioxidants, thioether auxiliary antioxidants, hindered amine auxiliary antioxidants and an anti-copper agent in a weight ratio of 1:(1-4):(1-2):(0.5-1). The material can serve as the insulating material of 1E-grade K1 type halogen-free flame retardant heat shrink tubes, wires and cables and cable accessories for nuclear power plants.

Description

technical field [0001] The invention relates to a halogen-free flame-retardant environment-friendly material and its application, in particular to a 1E-class K1 halogen-free flame-retardant material for nuclear power plants and its application. Background technique [0002] With technological progress and economical considerations, the design life of nuclear power plants continues to extend. The design life of the first-generation nuclear power plants is 20 to 30 years, and the design life of the second-generation nuclear power plants is about 40 years. The design life of the third-generation nuclear power plants now developed The life span has been raised to 60 years. Recently searched for information, foreign countries have begun to study the possibility of nuclear reactors running for 100 years. [0003] Nuclear power generation is the most important clean energy in the medium and long term in the future, and it is also a basic project in my country's main low-carbon eco...

AI Technical Summary

Problems solved by technology

"Research Progress on Microencapsulated Red Phosphorus Flame Retardant" in "China Plastics", Volume 16, Issue 1, 2002, introduced red phosphorus flame retardants, which mentioned that red phosphorus can undergo a slow chemical reaction with air in a humid environment , produces highly toxic phosphine (PH3) gas, and red phosphorus dust is explosive, and will spontaneously ignite due to high internal heat when stored in large quantities, resulting in potential safety accidents

In addition, the inherent purplish red color of red phosphorus greatly limits its application, and flame retardant materials containing red phosphorus will emit a large amount of irritating gas during production and combustion