Protective composite material and preparation method thereof

Abstract

The invention provides a protective composite material, which comprises a protective layer, a functional layer and a comfort layer stacked in order; from the end of the protective layer, the functional layer includes a nuclear radiation shielding layer, an electromagnetic shielding functional layer and a textile substrate which are sequentially stacked, or, the functional layer includes the nuclear radiation shielding layer and the textile substrate which are sequentially stacked; and from a fabric substrate end, the comfort layer includes a neutron protective coating and a polypropylene high-molecular substrate which are sequentially stacked. The invention also provides a preparation method of the protective composite material. The protective composite material has multiple functions of flame retardation, static prevention, anti-ionization/electromagnetic radiation and neutron protection, and can be used for processing nuclear radiation protective clothing and protective tents, flexible protective screens and the like.

Description

technical field [0001] The invention relates to a multifunctional protective flexible composite material, in particular to a protective composite material and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of the military and nuclear power fields, the issue of nuclear radiation safety has attracted much attention. In order to protect the safety of practitioners and ordinary people, the research and development of radiation shielding materials and equipment has important social significance. At present, the application fields of radiation shielding materials are very wide, especially the new flexible radiation protection materials with multiple functions can be better applied to personal protective equipment, and have a wide range of application values. [0003] Traditional nuclear radiation protection materials use lead and its compounds as the main materials. Common personal protective products include lead rubber pr...

AI Technical Summary

Problems solved by technology

However, due to the disadvantages of poor stability, volatile, strong biological toxicity and poor wearing comfort of personal radiation protection products based on lead-containing materials, there are still certain problems in practical application, and the current technology still has protective functions. A single problem, so it is urgent to develop a new non-toxic, comfortable and stable protective material with multiple protective functions

[0004] The Chinese patent with the publication number CN103137228A discloses a flexible composite material capable of shielding nuclear radiation. The flexible composite material is mainly composed of lead fiber cloth, anti-nuclear radiation powder, and polymer materials. It is flexible, foldable, and light in weight. However, the material has a single protective function, does not have the functions of flame retardancy, anti-static, anti-electromagnetic radiation and neutron radiation, and cannot meet the application in complex environments.

[0005] The Chinese patent with the publication number CN107227454A discloses an anti-nuclear radiation composite material that can better protect high-energy neutrons and gamma rays, but the technical solution is to provide a protective coating on the surface of the stainless steel substrate, which is a rigid material. It cannot be processed into flexible protective equipment

[0006] The Chinese patent with the publication number CN103778986A discloses a multifunctional nuclear radiation protective clothing. The formed woven fabric has the inner layer of polyamide fiber, polyester fiber or cotton fiber fabric layer, which has nuclear radiation protection performance, and also has the functions of anti-electromagnetic radiation, anti-static, flame-retardant, oil-proof, and anti-puncture. But it does not have neutron protection function, and there is also the problem of low radiation shielding rate

[0007] In view of the above-mentioned problems of high toxicity, single function, poor comfort, and narrow application range of shielding materials, it is of great significance to provide a composite material that is flexible, high in comfort, and integrates nuclear protection, electromagnetic protection, and neutron protection.

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