Electromagnetic shielding flame-retardant material for carbon fiber base material as well as preparation method and application thereof

Abstract

The invention discloses an electromagnetic shielding flame-retardant material for a carbon fiber base material as well as a preparation method and application of the electromagnetic shielding flame-retardant material. The material comprises 20-50 parts of a water-based flame-retardant polymer adhesive, 5 to 20 parts of a metal powder conductive filler; 8 to 40 parts of a macromolecular intumescentflame retardant; 4 to 10 parts of an ionic liquid containing phosphorus, nitrogen and halogen; 0.5 to 2.5 parts of a catalytic charring agent, 0.5 to 5.0 parts of a composite antioxidant, 0.5 to 5 parts of an antibacterial mildew inhibitor, 0.5 to 5.0 parts of a flame-retardant cross-linking agent, 0.3 to 3.0 parts of a wetting agent, 0.3 to 3.0 parts of a dispersing agent, 0.3 to 3.0 parts of aleveling agent, 0.2 to 2.0 parts of an antifoaming agent and 0.3 to 3.0 parts of a thickener. The electromagnetic shielding flame-retardant material is applied to a carbon fiber base material; a firmand durable protective layer is formed on the surface; the carbon fiber base material can be protected from being invaded by bacteria and mould, can endure environmental change, has high and low temperature resistance and damp and hot smoke resistance. The electromagnetic shielding flame-retardant material is safe and environment-friendly, a protective layer formed by spraying or coating is low insurface resistance, high in shielding efficiency and good in flame-retardant effect, and when meeting high-temperature flames, the electromagnetic shielding flame-retardant material can rapidly expand into carbon, insulate heat and oxygen and protect a carbon fiber base material from being damaged.

Description

technical field [0001] The invention relates to an electromagnetic shielding material, in particular to an electromagnetic shielding flame retardant material and a preparation method and application thereof. Background technique [0002] As we all know, electromagnetic wave pollution has become another major public hazard after noise pollution, air pollution, water pollution, and solid waste pollution. It has become an important research direction to explore efficient electromagnetic shielding materials, prevent electromagnetic wave pollution to protect the environment and human health, and prevent electromagnetic wave leakage to ensure information security. [0003] There are many kinds of electromagnetic shielding materials (EMI), which are widely used in clothing, medical treatment, construction, electronics, electrical appliances, communications, military, shipbuilding, military industry, security and other industries. [0004] Especially in the fields of military indus...

AI Technical Summary

Problems solved by technology

[0007] (1) Reflection loss caused by impedance mismatch on the surface of the shield;

[0008] (2) When the electromagnetic wave is transmitted inside the shielding material, the electromagnetic energy is absorbed to cause transmission loss or absorption loss;

[0009] (3) Energy loss caused by multiple reflections of electromagnetic waves between the inner walls of the shielding material

[0025] At present, there is a lack of environmentally friendly products in the market that meet such high standards of flame retardancy, electromagnetic shielding and environmental adaptability

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